/* roulang page: index */
:root{
    --c-primary:#FF6B4A;
    --c-primary-light:#FF8A5C;
    --c-primary-dark:#E84D3D;
    --c-secondary:#0FB5A6;
    --c-secondary-light:#F2FBFA;
    --c-bg:#F7F6F3;
    --c-card:#FFFFFF;
    --c-dark:#1E2226;
    --c-text:#1F2933;
    --c-text-weak:#6B7280;
    --c-border:#E5E7EB;
    --c-input:#F3F4F6;
    --radius-large:24px;
    --radius-card:16px;
    --radius-btn:12px;
    --radius-small:10px;
    --shadow-1:0 4px 20px rgba(232, 77, 61, 0.08);
    --shadow-2:0 12px 30px rgba(30, 34, 38, 0.10);
    --gradient-primary:linear-gradient(135deg, #FF8A5C 0%, #FF6B4A 55%, #E84D3D 100%);
    --gradient-soft:linear-gradient(160deg, #F2FBFA 0%, #FFFFFF 100%);
    --font-body:'PingFang SC','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:var(--font-body);background:var(--c-bg);color:var(--c-text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;height:auto;display:block}
  button{font-family:inherit;cursor:pointer;border:none;background:none}
  input{font-family:inherit;outline:none}
  ul,ol{list-style:none}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 28px}
  .section{padding:90px 0}
  .section-header{text-align:center;max-width:760px;margin:0 auto 50px}
  .section-header .tag{display:inline-flex;align-items:center;gap:6px;background:rgba(255,107,74,0.08);color:var(--c-primary);font-size:13px;font-weight:600;padding:5px 16px;border-radius:999px;margin-bottom:16px;letter-spacing:0.02em}
  .section-header h2{font-size:34px;line-height:1.3;font-weight:800;color:var(--c-dark)}
  .section-header p{color:var(--c-text-weak);font-size:16px;margin-top:14px}
  .tag-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,107,74,0.08);color:var(--c-primary);font-size:13px;font-weight:600;padding:5px 16px;border-radius:999px;letter-spacing:0.02em}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;border-radius:var(--radius-btn);padding:11px 24px;transition:all .22s ease;border:1px solid transparent;white-space:nowrap}
  .btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 14px rgba(255,107,74,0.22)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 22px rgba(255,107,74,0.32)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(255,107,74,0.18)}
  .btn-secondary{background:#fff;border:1px solid var(--c-border);color:var(--c-dark)}
  .btn-secondary:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--shadow-1)}
  .btn-ghost{background:transparent;color:var(--c-dark)}
  .btn-ghost:hover{color:var(--c-primary)}
  .btn-light{background:#fff;color:var(--c-primary-dark);box-shadow:0 4px 14px rgba(0,0,0,0.08)}
  .btn-light:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,0.14)}
  .btn-sm{font-size:13px;padding:8px 16px;border-radius:10px}
  .btn-lg{padding:14px 38px;font-size:16px;border-radius:14px}
  .cont-link{display:inline-flex;align-items:center;gap:4px;color:var(--c-primary);font-weight:600}
  .cont-link i{font-style:normal;transition:transform .2s}
  .cont-link:hover i{transform:translateX(4px)}

  body{background:var(--c-bg)}

  /* ===== NAV ===== */
  .site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(247,246,243,0.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(0,0,0,0.03);transition:box-shadow .25s}
  .site-header.scrolled{box-shadow:0 4px 24px rgba(30,34,38,0.07)}
  .nav-wrap{display:flex;align-items:center;height:72px;gap:20px}
  .nav-logo{flex-shrink:0;display:flex;align-items:center;gap:11px}
  .logo-disc{width:40px;height:40px;border-radius:12px;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(255,107,74,0.28);flex-shrink:0}
  .logo-disc span{color:#fff;font-size:20px;font-weight:900;line-height:1;transform:rotate(-6deg)}
  .logo-text{display:flex;flex-direction:column;line-height:1.1}
  .logo-primary{font-size:18px;font-weight:800;color:var(--c-dark);letter-spacing:-0.01em}
  .logo-primary em{font-style:normal;color:var(--c-primary)}
  .logo-sub{font-size:10px;color:var(--c-text-weak);letter-spacing:0.18em}
  .nav-center{flex:1;display:flex;justify-content:center}
  .nav-menu{display:flex;align-items:center;gap:32px}
  .nav-menu a{font-size:14px;color:var(--c-text-weak);font-weight:500;position:relative;padding:6px 2px;transition:color .2s}
  .nav-menu a:hover{color:var(--c-dark)}
  .nav-menu a.active-nav{color:var(--c-dark);font-weight:600}
  .nav-menu a.active-nav::after{content:'';position:absolute;left:50%;transform:translateX(-50%);bottom:-2px;width:6px;height:6px;border-radius:50%;background:var(--gradient-primary)}
  .nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .cmd-search{display:flex;align-items:center;background:#fff;border:1px solid var(--c-border);border-radius:12px;padding:0 14px;height:38px;gap:8px;transition:border-color .2s,box-shadow .2s;width:190px}
  .cmd-search:hover{box-shadow:0 0 0 3px rgba(255,107,74,0.06)}
  .cmd-search svg{flex-shrink:0}
  .cmd-search input{border:none;background:transparent;font-size:13px;color:var(--c-text);width:100%}
  .cmd-search input::placeholder{color:var(--c-text-weak)}
  .cmd-search kbd{flex-shrink:0;background:var(--c-bg);border-radius:5px;padding:1px 6px;font-size:11px;border:1px solid var(--c-border);color:var(--c-text-weak)}
  .icon-btn{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:#fff;border:1px solid var(--c-border);color:var(--c-text-weak);transition:all .2s;position:relative}
  .icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary)}
  .badge-dot{position:absolute;top:6px;right:6px;width:7px;height:7px;background:var(--c-primary);border-radius:50%;border:2px solid #fff}
  .nav-cta{background:var(--gradient-primary);color:#fff;padding:9px 22px;border-radius:10px;font-size:14px;font-weight:600;box-shadow:0 3px 12px rgba(255,107,74,0.22);transition:all .2s}
  .nav-cta:hover{box-shadow:0 5px 18px rgba(255,107,74,0.35);transform:translateY(-1px)}
  .mobile-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
  .mobile-toggle span{display:block;width:24px;height:2px;background:var(--c-dark);border-radius:2px;transition:all .25s}
  .mobile-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .mobile-toggle.open span:nth-child(2){opacity:0}
  .mobile-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  /* ===== HERO ===== */
  .hero{position:relative;min-height:92vh;display:flex;align-items:center;padding:140px 0 80px;overflow:hidden;background:var(--c-bg)}
  .hero::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.06;z-index:0}
  .hero::after{content:"";position:absolute;top:-120px;right:32%;width:420px;height:420px;border-radius:50%;border:1px solid rgba(15,181,166,0.08);z-index:0}
  .hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
  .hero-copy .hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,107,74,0.08);border:1px solid rgba(255,107,74,0.15);color:var(--c-primary);font-size:13px;font-weight:600;padding:6px 18px;border-radius:8px}
  .hero-copy .hero-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c-secondary);display:inline-block}
  .hero h1{font-size:44px;font-weight:800;line-height:1.25;color:var(--c-dark);letter-spacing:-0.02em;margin:20px 0 24px}
  .hero h1 em{font-style:normal;background:linear-gradient(120deg, var(--c-primary), var(--c-primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
  .hero-sub{font-size:17px;color:var(--c-text-weak);line-height:1.8;max-width:520px}
  .hero-actions{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap}
  .hero-note{display:flex;gap:10px;margin-top:34px;align-items:center}
  .hero-image-zone{position:relative;border-radius:22px;overflow:hidden;padding:0}
  .hero-img-main{position:relative;border-radius:22px;overflow:hidden;box-shadow:0 30px 60px -22px rgba(30,34,38,0.28);border:2px solid rgba(255,255,255,0.7)}
  .hero-img-main img{width:100%;height:auto;object-fit:cover}
  .hero-badge-card{position:absolute;top:14px;left:-12px;background:#fff;border-radius:12px;box-shadow:0 4px 18px rgba(30,34,38,0.07)}
  .hero-zcard{bottom:24px;right:-10px}
  /* hero data stats */
  .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);margin-top:46px;background:rgba(255,255,255,0.7);border:1px solid rgba(255,255,255,0.8);border-radius:16px;backdrop-filter:blur(4px);padding:4px 14px;max-width:560px}
  .hero-counter{padding:8px 10px}
  .hero-counter .num{font-size:22px;font-weight:800;line-height:1.3;font-family:Arial,Inter;background:linear-gradient(100deg,var(--c-primary),var(--c-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
  .hero-counter .cap{font-size:11px;color:var(--c-text-weak)}
  .hero-img-main{border-radius:22px}
  .wave-line{position:absolute;top:80px;right:0;width:120px;height:66px;z-index:-1;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 60' fill='none'%3E%3Cpath d='M0 30Q15 10 30 25T60 25Q80 5 100 30' stroke='%23FF6B4A' stroke-opacity='0.15' stroke-width='2'/%3E%3C/svg%3E") center/contain no-repeat}

  /* merit blocks */
  .scene-grid{display:grid;grid-template-columns:1.1fr 1.1fr;grid-gap:28px;text-align:left}
  .wide-scene{background:var(--c-card);border-radius:var(--radius-large);overflow:hidden;border:1px solid rgba(0,0,0,0.04);box-shadow:var(--shadow-1)}
  .scene-cap{padding:12px 24px 4px 24px;font-size:13px;color:var(--c-secondary);font-weight:600;margin-bottom:4px}
  .scene-title{padding:0 24px 14px;font-size:26px;font-weight:800;color:var(--c-dark);line-height:1.35}
  .scene-text{padding:0 24px 15px;font-size:14px;color:var(--c-text-weak);line-height:1.75}
  .scene-step{margin-top:6px;padding:6px 24px 20px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
  .step-pip{width:26px;height:26px;border-radius:50%;background:var(--c-secondary-light);color:var(--c-secondary);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin:0 6px 0 0}
  .step-con{font-size:12px;color:var(--c-text-weak)}
  .step-line-arrow{font-size:16px;color:var(--c-primary);opacity:0.6}
  .action-row{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:16px 0 12px}
  .scene-icon{width:68px;height:68px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--gradient-primary);box-shadow:0 6px 16px rgba(255,107,74,0.14);margin-top:14px}
  .scene-icon svg{width:30px;height:30px;stroke:#fff;fill:none}
  .scene-box{display:flex;flex-direction:column;padding:10px 26px 24px}
  .feature-strips{margin-top:28px;display:grid;grid-template-columns:1fr 1fr;gap:28px}
  .feature-strip{background:linear-gradient(130deg,#F6E2D9 0%,#F9F0DF 100%);border-radius:var(--radius-large);padding:28px 32px;display:flex;align-items:flex-start;gap:18px}
  .feature-strip:nth-child(2){background:linear-gradient(130deg,#DDF2F0 0%,#EEF8F4 100%)}
  .feature-strip svg{flex-shrink:0;margin-top:6px}
  .feature-strip h5{font-size:16px;font-weight:700;margin-bottom:6px}
  .feature-strip p{font-size:14px;line-height:1.7;color:var(--c-text-weak)}

  /* proof */
  .proof-face{background:var(--c-dark);color:#fff;border-radius:var(--radius-large);padding:40px 48px;overflow:hidden}
  .proof-intro h3{color:#fff;font-size:14px;margin-bottom:14px}
  .proof-h2{color:#fff !important}
  .proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:35px;margin-top:33px}
  .proof-item{position:relative}
  .proof-item .dot-serial{width:4px;height:16px;background:var(--c-primary);border-radius:8px;margin-bottom:9px;display:block}
  .proof-item .hp{font-family:Arial,Inter;font-size:38px;font-weight:800;line-height:1.15}
  .proof-item .pcap{color:rgba(255,255,255,0.72);font-size:12px}
  .proof-rank-arrow{display:inline-block;font-size:16px;margin-left:4px}
  .proof-item .big-num{font-size:33px;font-weight:900}
  .proof-desc{font-size:13px;color:rgba(255,255,255,0.56)}
  .proof-item.has-line::before{position:absolute;left:-17px;top:8px;content:"";background:#343B42;width:1px;height:88px}
  .proof-step-look{display:inline-block;width:100%;height:1px;background:linear-gradient(88deg, rgba(255,255,255,0.55), rgba(255,255,255,0.0))}

  /* feature detail */
  .details-two-col{display:grid;grid-template-columns:1.1fr 1.2fr;gap:44px;align-items:center}
  .rich-img{margin:0;border-radius:15px;overflow:hidden;position:relative;aspect-ratio:5 / 3;background:#fff}
  .rich-img img{width:100%;height:100%;object-fit:cover}
  .border-img-outline{outline:1px solid rgba(255,107,74,0.2);outline-offset:6px;border-radius:8px}
  .tech-list-item{display:flex;gap:14px;margin-bottom:22px;align-items:flex-start}
  .tech-list-icon{width:32px;height:32px;flex-shrink:0;border-radius:9px;background:var(--c-secondary-light);display:flex;align-items:center;justify-content:center;color:var(--c-secondary)}
  .tech-list-item h4{font-size:15px;font-weight:700;color:var(--c-dark)}
  .tech-list-item p{font-size:13px;color:var(--c-text-weak);margin-top:3px}
  .guide-tabs{display:flex;gap:14px;margin-top:56px;background:rgba(255,255,255,0.72);border-radius:12px;padding:5px;width:max-content}
  .guide-tabs .gtab{border-radius:10px;padding:8px 26px;background:transparent;font-size:13px;font-weight:600;color:var(--c-text-weak);transition:all .22s}
  .guide-tabs .gtab.active,.guide-tabs .gtab:hover{background:#fff;box-shadow:0 2px 10px rgba(0,0,0,0.05);color:var(--c-dark)}
  /* partner-structure */
  .partner-row{display:grid;grid-template-columns:1.1fr 1fr;gap:24px}
  .stack-object{border:1px solid var(--c-border);background:#fff;border-radius:18px;padding:28px 30px}
  .stack-object--step .flow-line{display:flex;align-items:center;justify-content:center;margin:18px 0 10px;position:relative}
  .flow-line .connector{display:inline-flex;flex-direction:column;font-size:12px;color:var(--c-secondary)}
  .service-tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .tier-card{background:#fff;border-radius:20px;position:relative;padding:26px 30px 30px;box-shadow:var(--shadow-1);border-top:4px solid rgba(255,255,255,1)}
  .tier-card .badge-pill{position:absolute;top:-12px;left:20px}
  .badge-pill{background:var(--c-medium,#333);display:inline-flex;font-size:12px;color:#fff;border-radius:10px;padding:3px 10px}
  .tier-card.is-wrap{border:1.5px solid var(--c-primary); background:bg-white;padding:28px}
  .tier-card-highlight{box-shadow:0 10px 30px -10px rgba(255,107,74,0.25);border-radius:24px;position:relative;background:linear-gradient(var(--c-card), var(--c-card)) padding-box,var(--gradient-primary) border-box;border:2px solid transparent}
  .tier-topmark{font-size:12px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--c-secondary)}
  .metric-note{font-size:12px;color:var(--c-text-weak)}

  /* search/faq */
  .faq-wrap{column-gap:44px}

  .faq-row-two{display:grid;grid-template-columns:380px 1fr;grid-gap:34px}
  .faq-head-h2{}
  .accordion .faq-card{background:#fff;border-radius:14px;padding:0;transition:box-shadow .2s;position:relative;overflow:hidden}
  .accordion .faq-card + .accordion .faq-card,.accordion .faq-card{margin-bottom:10px;box-shadow:0 3px 12px rgba(30,34,38,0.02);border:1px solid var(--c-border)}
  .faq-question{padding:16px 36px 16px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;text-align:left;font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;color:var(--c-dark);background:transparent;transition:.2s}
  .faq-q-mark{width:26px;height:26px;border-radius:50%;background:var(--c-bg);color:var(--c-primary);font-size:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
  .faq-question.open .faq-q-mark{background:var(--gradient-primary);color:#fff}
  .faq-answer{max-height:0;overflow:hidden;padding:0 22px;transition:max-height .25s ease;}
  .faq-card.open .faq-answer{max-height:240px;padding:0 22px 14px}

  /* cards list */
  .entry-list-space{display:flex;margin:0 -14px;flex-wrap:wrap}

  /* footer */
  .page-footer{background:var(--c-dark);color:rgba(255,255,255,0.64);padding:34px 0 26px;font-size:14px;margin-top:80px}
  .footer-layout{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
  .footer-brand{display:flex;align-items:center;gap:12px}
  .footer-site-copy{color:rgba(255,255,255,0.4);font-size:13px}
  .footer-right-links{display:flex;gap:18px;font-size:13px}
  .footer-right-links a:hover{color:#fff;text-decoration:underline}

  /* common blocks */
  .bg-light-section{background:var(--c-bg)}
  .bg-grey-card{background:#F3F4F6}
  .img-deco-grad{border-radius:16px}
  @media (max-width:992px){.hero-inner{grid-template-columns:1fr;gap:38px;padding-top:40px}.hero h1{font-size:32px}.hero-sub{font-size:15px}.nav-menu{display:none}.mobile-toggle{display:flex}.service-tiers{grid-template-columns:1fr 1fr}.tier-card-highlight{grid-column:1/-1}.proof-grid{grid-template-columns:1fr 1fr}.faq-row-two{display:block}.section{padding:50px 0}.section-header h2{font-size:25px}.details-two-col,.scene-grid,.partner-row,.feature-strips{grid-template-columns:1fr}.hero{padding-top:130px}}
  @media(max-width:560px){.nav-wrap{position:relative;gap:10px}.container{padding:0 16px}.site-header .nav-cta{display:none}.nav-center{margin-left:auto}.cmd-search{display:flex}.navigation-main-draw{display:none;width:100%;position:fixed;top:65px;background:#fff;flex-direction:column;padding:8px;box-shadow:0 8px 24px rgba(0,0,0,0.06);left:0;border-bottom:1px solid var(--c-border)}.navigation-main-draw.open{display:flex;top:72px}.navigation-main-draw .lvnav{width:100%}.nav-right{display:flex}.hero-stats{grid-template-columns:1fr 1fr}.section{padding:35px 0}
  .feature-strip{flex-direction:column}}
  @media(max-width:600px){ .service-tiers{grid-template-columns:1fr}.proof-grid{grid-template-columns:1fr}.hero-stats{grid-template-columns:1fr 1fr 1fr}}

/* roulang page: category1 */
/* ============ Design Variables ============ */
:root {
  --primary: #FF6B4A;
  --primary-light: #FF8A5C;
  --primary-dark: #E84D3D;
  --secondary: #0FB5A6;
  --secondary-light: #F2FBFA;
  --bg-main: #F7F6F3;
  --bg-card: #FFFFFF;
  --footer-dark: #1E2226;
  --text-dark: #1E2226;
  --text-body: #444A4D;
  --text-weak: #8A9094;
  --text-note: #ADB3B6;
  --border-light: #E8E6E1;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-level1: 0 4px 20px rgba(232, 77, 61, 0.08);
  --shadow-level2: 0 12px 30px rgba(30, 34, 38, 0.10);
  --gradient-brand: linear-gradient(135deg, #FF8A5C 0%, #FF6B4A 55%, #E84D3D 100%);
  --gradient-soft: linear-gradient(160deg, #F2FBFA 0%, #FFFFFF 100%);
  --font-main: "PingFang SC", "Source Han Sans SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-number: "Inter", "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);
  background: var(--bg-main);
  color: var(--text-body);
  line-height: 1.75;
  font-size: 15.5px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input { font-family: inherit; }
::selection { background: rgba(255,107,74,0.18); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.gradient-text { background: var(--gradient-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* ============ Header / Nav ============ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(247, 246, 243, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(232,230,225,0.9);
  transition: box-shadow 0.2s ease;
}
.site-header.scrolled { box-shadow: 0 4px 18px rgba(30,34,38,0.06); }
.header-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; gap: 20px;
  min-height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand a { display: flex; align-items: center; gap: 10px; }
.logo-disc {
  width: 38px; height: 38px; border-radius: 12px;
  background: var(--gradient-brand); display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: #fff; font-weight: 800;
  box-shadow: 0 4px 12px rgba(255,107,74,0.35);
}
.brand-text { line-height: 1.2; }
.brand-text b { display: block; font-size: 17px; color: var(--text-dark); font-weight: 700; letter-spacing: 0.2px; }
.brand-text small { display: block; font-size: 10.5px; color: var(--text-weak); letter-spacing: 0.4px; }
.nav-center { display: flex; align-items: center; flex: 1; justify-content: center; gap: 4px; }
.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-menu a {
  padding: 8px 14px; border-radius: 10px;
  font-size: 14px; color: var(--text-body); font-weight: 500;
  display: flex; align-items: center; gap: 6px;
  transition: all 0.2s ease; position: relative; white-space: nowrap;
}
.nav-menu a:hover { color: var(--primary-dark); background: rgba(255,107,74,0.06); }
.nav-menu a.active-nav { color: var(--primary-dark); font-weight: 600; background: rgba(255,107,74,0.08); }
.nav-menu a.active-nav::after {
  content: ''; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--gradient-brand);
}
.header-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.search-box {
  display: flex; align-items: center; gap: 8px;
  background: #EDEDEA; border-radius: 999px; padding: 7px 10px 7px 16px;
  border: 1px solid transparent; transition: all 0.2s ease; min-width: 210px;
}
.search-box:hover { border-color: rgba(255,107,74,0.25); background: #FFF; }
.search-box .fa-magnifying-glass { font-size: 13px; color: var(--text-note); }
.search-box input { border: none; outline: none; background: transparent; font-size: 13px; color: var(--text-dark); width: 100%; }
.search-box .kbd-badge {
  font-size: 10px; font-family: var(--font-number); background: rgba(30,34,38,0.06);
  padding: 2px 6px; border-radius: 5px; color: var(--text-weak); white-space: nowrap;
}
.icon-btn {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  background: transparent; border-radius: 10px; color: var(--text-body);
  font-size: 16px; transition: all 0.2s ease;
}
.icon-btn:hover { background: rgba(0,0,0,0.05); color: var(--primary-dark); }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--gradient-brand); color: #fff; border: none;
  font-size: 14px; font-weight: 600; padding: 10px 22px;
  border-radius: var(--radius-sm); cursor: pointer;
  transition: all 0.25s ease; box-shadow: 0 6px 16px rgba(255,107,74,0.25);
  white-space: nowrap;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(255,107,74,0.35); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-outline {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: #fff; color: var(--text-dark); border: 1px solid #DDE0DF;
  font-size: 14px; font-weight: 500; padding: 10px 22px;
  border-radius: var(--radius-sm); cursor: pointer;
  transition: all 0.25s ease;
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary-dark); box-shadow: 0 6px 14px rgba(255,107,74,0.08); }
.btn-outline:active { transform: scale(0.98); }
.menu-trigger { display: none; width: 40px; height: 40px; border-radius: 10px; font-size: 18px; color: var(--text-body); background: transparent; transition: all 0.2s ease; }
.menu-trigger:hover { background: rgba(0,0,0,0.05); }

/* Mobile drawer */
.mobile-drawer {
  position: fixed; top: 0; right: -320px; width: 300px; height: 100vh; background: #fff;
  z-index: 200; box-shadow: -10px 0 40px rgba(0,0,0,0.12);
  transition: right 0.3s ease; padding: 24px; overflow-y: auto;
}
.mobile-drawer.open { right: 0; }
.drawer-overlay {
  position: fixed; inset: 0; background: rgba(30,34,38,0.5);
  opacity: 0; pointer-events: none; transition: opacity 0.3s ease; z-index: 199;
}
.drawer-overlay.show { opacity: 1; pointer-events: auto; }
.mobile-drawer .drawer-brand { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.mobile-drawer .drawer-logo { display: flex; align-items: center; gap: 8px; }
.mobile-drawer .drawer-logo b { font-size: 15px; color: var(--text-dark); }
.mobile-drawer .drawer-close { width: 34px; height: 34px; border-radius: 8px; font-size: 16px; color: var(--text-body); }
.mobile-drawer .drawer-close:hover { background: #f0f0f0; }
.mobile-drawer .drawer-nav { display: flex; flex-direction: column; gap: 4px; margin-bottom: 24px; }
.mobile-drawer .drawer-nav a {
  padding: 12px 14px; border-radius: 10px; font-size: 15px; font-weight: 500; color: var(--text-body);
  border-left: 3px solid transparent; transition: all 0.2s ease;
}
.mobile-drawer .drawer-nav a.active-nav { border-left-color: var(--primary); background: rgba(255,107,74,0.06); color: var(--primary-dark); }
.mobile-drawer .drawer-nav a:hover { background: rgba(0,0,0,0.03); }
.mobile-drawer .drawer-search {
  display: flex; align-items: center; gap: 8px; background: #F0F0EE;
  border-radius: 999px; padding: 10px 16px; margin-bottom: 24px;
}
.mobile-drawer .drawer-search input { border: none; outline: none; background: transparent; font-size: 13px; flex: 1; }
.mobile-drawer .btn-block { width: 100%; text-align: center; }

/* ============ Category 1 Hero ============ */
.cat-hero {
  position: relative; overflow: hidden;
  background: var(--gradient-soft);
  padding: 70px 0 0;
  border-bottom: 1px solid var(--border-light);
}
.cat-hero-sub { font-size: 13px; letter-spacing: 1.5px; color: var(--primary-dark); font-weight: 600; margin-bottom: 14px; }
.cat-hero-sub i { margin-right: 4px; color: var(--primary); }
.cat-hero h1 { font-size: 42px; font-weight: 800; color: var(--text-dark); line-height: 1.25; letter-spacing: 0.5px; margin-bottom: 18px; }
.cat-hero .lead-desc { font-size: 15.5px; color: var(--text-body); max-width: 560px; line-height: 1.9; margin-bottom: 22px; }
.cat-hero-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
.cat-hero-thumb {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 32px; align-items: end;
  padding: 36px 0;
}
.hero-background-pic {
  position: relative; border-radius: 20px 20px 0 0; overflow: hidden;
  min-height: 240px; max-height: 320px;
  background: linear-gradient(135deg, #1E2226 0%, #3A444C 100%);
}
.hero-background-pic img {
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0.8;
}
.hero-pic-content {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 30px 28px;
  background: linear-gradient(to top, rgba(30,34,38,0.75), transparent);
  color: #fff;
}
.hero-pic-content .tag-badge { display: inline-flex; align-items: center; gap: 5px; background: rgba(255,255,255,0.18); color: #fff; font-size: 12px; padding: 4px 12px; border-radius: 999px; font-weight: 500; backdrop-filter: blur(8px); margin-bottom: 8px; }
.hero-pic-content h4 { font-size: 20px; font-weight: 700; margin-bottom: 6px; color: #fff; line-height: 1.4; }
.hero-pic-content p { font-size: 12px; opacity: 0.8; }
.hero-process-strip {
  background: var(--bg-card); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-level1); border: 1px solid rgba(232,230,225,0.6);
  padding: 24px 26px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.process-step { display: flex; align-items: flex-start; gap: 12px; }
.step-num {
  width: 28px; height: 28px; border-radius: 9px; flex-shrink: 0;
  background: var(--gradient-brand); color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-family: var(--font-number);
}
.step-line { flex: 1; }
.step-line h3 { font-size: 15px; color: var(--text-dark); font-weight: 600; margin-bottom: 3px; }
.step-line p { font-size: 12px; color: var(--text-weak); line-height: 1.5; }
.deco-ring {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(255,107,74,0.12); pointer-events: none;
}
.deco-ring.ring-1 { width: 200px; height: 200px; top: -60px; right: 30px; }
.deco-ring.ring-2 { width: 320px; height: 320px; top: -90px; right: -80px; border-color: rgba(15,181,166,0.1); }

/* ============ Common section ============ */
.section-padding { padding: 80px 0; }
.section-label {
  display: inline-flex; align-items: center; gap: 6px;
  background: #FFF0ED; color: var(--primary-dark);
  font-size: 12px; font-weight: 600; padding: 5px 14px;
  border-radius: 999px; margin-bottom: 16px; letter-spacing: 0.4px;
}
.section-label.teal { background: #E4F7F5; color: #0B8E82; }
.section-label i { font-size: 11px; }
.section-title { font-size: 32px; font-weight: 800; color: var(--text-dark); line-height: 1.3; margin-bottom: 14px; letter-spacing: 0.2px; }
.section-subtitle { font-size: 14.5px; color: var(--text-weak); line-height: 1.8; max-width: 640px; margin-bottom: 40px; }

/* ============ Onboarding / 引导模块 ============ */
.onboard-overview {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px;
  align-items: center;
}
.onboard-image-panel {
  position: relative; border-radius: 24px; overflow: hidden;
  background: #1E2226; min-height: 320px;
}
.onboard-image-panel img { height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.onboard-image-panel:hover img { transform: scale(1.02); }
.onboard-info-list { display: flex; flex-direction: column; gap: 0; }
.onboard-info-item {
  display: flex; gap: 16px; padding: 16px 0;
  border-bottom: 1px solid var(--border-light);
}
.onboard-info-item:last-child { border-bottom: none; }
.onboard-icon {
  width: 40px; height: 40px; border-radius: 12px; flex-shrink: 0;
  background: #FFF0ED; color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 17px;
}
.onboard-info-item h3 { font-size: 15px; font-weight: 600; color: var(--text-dark); margin-bottom: 5px; }
.onboard-info-item p { font-size: 13.5px; color: var(--text-weak); line-height: 1.7; }
.check-badge-list { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.check-badge {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-weak); font-size: 12px;
  background: #F2F1EF; padding: 4px 10px; border-radius: 999px;
}
.check-badge .fa-circle-check { color: var(--secondary); }
.btn-with-arrow { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14px; color: var(--primary-dark); transition: gap 0.2s ease; }
.btn-with-arrow:hover { gap: 12px; color: var(--primary); }

/* ============ Feature cards ============ */
.prep-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.fea-card {
  background: #fff; border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); padding: 28px 26px 24px;
  transition: all 0.3s ease; position: relative; overflow: hidden;
}
.fea-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient-brand); transform: scaleX(0);
  transform-origin: left; transition: transform 0.3s ease;
}
.fea-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-level2); border-color: rgba(255,107,74,0.18); }
.fea-card:hover::before { transform: scaleX(1); }
.fea-card .icon-box {
  width: 44px; height: 44px; border-radius: 13px;
  background: var(--gradient-soft); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 19px; margin-bottom: 18px;
  border: 1px solid rgba(15,181,166,0.12);
}
.fea-card h3 { font-size: 16px; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
.fea-card p { font-size: 13.5px; color: var(--text-weak); line-height: 1.8; }

/* ============ Scenario cards ============ */
.scene-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.scene-card {
  background: #fff; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border-light); display: flex; flex-direction: column;
  transition: all 0.3s ease;
}
.scene-card:hover { box-shadow: var(--shadow-level2); transform: translateY(-4px); }
.scene-cover-img { width: 100%; height: 180px; object-fit: cover; background: #f5f5f5; }
.scene-content { padding: 22px 22px 18px; flex: 1; display: flex; flex-direction: column; }
.scene-tag {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px; font-weight: 500; color: var(--primary-dark);
  background: #FFF0ED; padding: 4px 10px; border-radius: 999px;
  margin-bottom: 10px; align-self: flex-start;
}
.scene-card h3 { font-size: 16px; color: var(--text-dark); font-weight: 700; margin-bottom: 6px; line-height: 1.4; }
.scene-card p { font-size: 13px; color: var(--text-weak); line-height: 1.7; }
.scene-card .scene-meta { margin-top: 14px; font-size: 12px; color: var(--text-note); display: flex; gap: 16px; }
.scene-time { font-family: var(--font-number); }

/* ============ Service flow ============ */
.main-flow-section { background: #fff; border-radius: var(--radius-lg); padding: 44px 4%; box-shadow: var(--shadow-level1); margin: 70px 0; }
.flow-title-row { display: flex; align-items: center; justify-content: space-between; gap: 34px; flex-wrap: wrap; margin-bottom: 30px; }
.main-flow-section h2 { font-size: 26px; font-weight: 700; color: var(--text-dark); position: relative; }
.main-flow-section h2::after { content: ''; display: block; width: 42px; height: 3px; margin-top: 8px; background: var(--gradient-brand); border-radius: 2px; }
.main-flow-section .top-tip { font-size: 12px; color: var(--text-weak); max-width: 460px; }
.flow-step-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.flow-step-col { background: #F9F8F6; border-radius: var(--radius-md); padding: 22px 20px; position: relative; transition: all 0.2s ease; }
.flow-step-col:hover { background: #FFF0ED; }
.flow-step-col .step-badgenum { font-family: var(--font-number); font-size: 12px; font-weight: 600; color: var(--primary); margin-bottom: 8px; letter-spacing: 0.4px; }
.flow-step-col h4 { font-size: 16px; font-weight: 600; margin-bottom: 7px; color: var(--text-dark); }
.flow-step-col p { font-size: 12px; color: var(--text-weak); line-height: 1.6; }
.flow-arrow { display: flex; align-items: center; justify-content: center; color: var(--border-light); font-size: 20px; font-weight: 300; }
.flow-tip-note {
  background: #F2FBFA; border-left: 3px solid var(--secondary);
  border-radius: 0 10px 10px 0; padding: 12px 16px; margin-top: 22px;
  font-size: 13px; color: #27877F; line-height: 1.6;
}

/* ============ Faq ============ */
.faq-wrap { display: grid; grid-template-columns: 1fr 1.5fr; gap: 60px; margin-top: 16px; }
.faq-left-section { position: sticky; top: 110px; height: fit-content; }
.faq-item {
  background: #fff; border-radius: var(--radius-md);
  border: 1px solid var(--border-light); margin-bottom: 12px;
  overflow: hidden; transition: all 0.2s ease;
}
.faq-item.expanded { box-shadow: var(--shadow-level1); border-color: rgba(255,107,74,0.3); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px; cursor: pointer; gap: 12px;
}
.faq-question span { font-size: 14.5px; font-weight: 600; color: var(--text-dark); line-height: 1.5; }
.faq-icon-mark {
  width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center;
  justify-content: center; background: #FFF0ED; color: var(--primary);
  font-size: 13px; transition: all 0.3s ease; flex-shrink: 0;
}
.faq-item.expanded .faq-icon-mark { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item.expanded .faq-answer { max-height: 240px; }
.faq-answer p { padding: 0 20px 18px 20px; font-size: 13px; color: var(--text-weak); line-height: 1.8; }
.faq-cta-note { padding: 18px; background: var(--gradient-soft); border-radius: 14px; margin-top: 14px; display: flex; align-items: center; gap: 12px; }
.faq-cta-note .icon-circle { width: 34px; height: 34px; border-radius: 50%; background: var(--gradient-brand); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; }
.faq-cta-note .note-text { font-size: 12.5px; color: var(--text-body); line-height: 1.6; }

/* ============ CTA Banner ============ */
.cta-stripe {
  background: #FFF0ED; border-radius: var(--radius-lg);
  padding: 40px 44px; display: flex; align-items: center;
  justify-content: space-between; gap: 28px; flex-wrap: wrap;
  border: 1px solid rgba(255,107,74,0.14); margin-bottom: 30px;
}
.cta-stripe h3 { font-size: 22px; font-weight: 700; color: var(--text-dark); line-height: 1.5; margin-bottom: 6px; }
.cta-stripe p { font-size: 13px; color: var(--text-weak); line-height: 1.6; }
.back-home-link { display: inline-flex; align-items: center; gap: 10px; color: var(--text-dark); font-weight: 600; font-size: 15px; transition: all 0.2s ease; }
.back-home-link:hover { gap: 16px; }
.back-home-link span { text-decoration: underline; text-underline-offset: 4px; text-decoration-color: rgba(255,107,74,0.2); }

/* ============ Footer ============ */
.page-footer {
  background: var(--footer-dark); padding: 30px 0 34px; color: rgba(255,255,255,0.7);
  border-radius: 24px 24px 0 0;
}
.footer-layout { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 22px; padding: 8px 0 16px; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .logo-disc { width: 34px; height: 34px; border-radius: 11px; font-size: 18px; }
.footer-right-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
.footer-right-links a {
  font-size: 13px; color: rgba(255,255,255,0.58); padding: 4px 8px; transition: color 0.2s ease;
}
.footer-right-links a:hover { color: #fff; }
.copyright-line { border-top: 1px solid rgba(255,255,255,0.12); margin-top: 16px; padding-top: 18px; }

/* ============ Breadcrumbs ============ */
.breadcrumb-section { padding-top: 18px; }
.breadcrumb-list { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 12px; color: var(--text-note); }
.breadcrumb-list a { color: var(--text-weak); transition: color 0.2s ease; }
.breadcrumb-list a:hover { color: var(--primary-dark); }
.breadcrumb-list i { font-size: 9px; color: #ccc; }
.breadcrumb-list .current { color: var(--text-dark); font-weight: 500; }

/* ============ Floating CTA ============ */
.float-cta-wrap { position: fixed; right: 24px; bottom: 24px; z-index: 160; }
.float-cta-main {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--gradient-brand); color: #fff; font-size: 17px;
  box-shadow: 0 6px 20px rgba(255,107,74,0.4);
  display: flex; align-items: center; justify-content: center;
}
.float-cta-main span { position: absolute; font-size: 13px; font-weight: 600; opacity: 0; transition: opacity 0.2s ease; }
.float-cta-main i { opacity: 1; transition: opacity 0.2s; }
.float-cta-wrap:hover .float-cta-main i { opacity: 0; }
.float-cta-wrap:hover .float-cta-main span { opacity: 1; }
.mobile-bottom-bar { display: none; }

/* ============ Scroll anim ============ */
@keyframes fadeUp { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.anim-fadeup { animation: fadeUp 0.4s ease-out both; }
.delay-1 { animation-delay: 0.08s; }
.delay-2 { animation-delay: 0.16s; }
.delay-3 { animation-delay: 0.24s; }

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .search-box { display: none; }
  .nav-center { display: none; }
  .menu-trigger { display: flex; align-items: center; justify-content: center; }
  .header-right .btn-primary { margin-left: auto; margin-right: 4px; white-space: nowrap; padding: 9px 16px; }
  .cat-hero-thumb { grid-template-columns: 1fr; gap: 24px; }
  .hero-process-strip { grid-template-columns: repeat(2, 1fr); }
  .onboard-overview { grid-template-columns: 1fr; gap: 32px; }
  .prep-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-step-list { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .flow-arrow.hide-md { display: none; }
  .faq-wrap { grid-template-columns: 1fr; gap: 30px; }
  .faq-left-section { position: static; }
  .faq-left-section .section-subtitle { margin-bottom: 24px; }
  #faq { border-top: 1px solid var(--border-light); padding-top: 44px; margin-top: 36px; }
  .scene-layout { grid-template-columns: 1fr; }
  .header-inner { padding: 0 20px; }
}
@media (max-width: 768px) {
  .cat-hero h1 { font-size: 30px; }
  .section-title { font-size: 24px; }
  .section-padding { padding: 56px 0; }
  .float-cta-wrap { display: none; }
  .mobile-bottom-bar {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 150;
    background: var(--footer-dark); color: #fff; padding: 10px 18px;
    justify-content: space-between; align-items: center;
    backdrop-filter: blur(10px);
  }
  .mobile-bottom-bar .bar-text { font-size: 12px; color: #fff; font-weight: 500; }
  .mobile-bottom-bar .bar-text small { color: rgba(255,255,255,0.5); font-weight: 400; font-size: 10px; display: block; line-height: 1.4; }
  .mobile-bottom-bar .btn-primary { padding: 9px 16px; font-size: 13px; margin-bottom: 0; }
  body { padding-bottom: 54px; }
  .cta-stripe { padding: 30px 24px; flex-direction: column; align-items: flex-start; }
  .back-home-link { font-size: 14px; }
}
@media (max-width: 520px) {
  .brand-text small { display: none; }
  .container, .header-inner { padding: 0 16px; }
  .hero-process-strip { grid-template-columns: 1fr; }
  .prep-grid { grid-template-columns: 1fr; }
  .flow-step-list { grid-template-columns: 1fr; }
  .cat-hero { padding-top: 36px; }
  .breadcrumb-list { font-size: 10px; }
}

/* roulang page: article */
:root {
    --coral: #FF6B4A;
    --coral-deep: #E84D3D;
    --coral-soft: #FF8A5C;
    --teal: #0FB5A6;
    --ink: #2A2D32;
    --muted: #626A72;
    --bg: #F7F6F3;
    --white: #FFFFFF;
    --border: #E5E1DB;
    --radius-lg: 24px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-1: 0 4px 20px rgba(232, 77, 61, 0.08);
    --shadow-2: 0 12px 30px rgba(30, 34, 38, 0.1);
    --grad-main: linear-gradient(135deg, #FF8A5C 0%, #FF6B4A 55%, #E84D3D 100%);
    --grad-soft: linear-gradient(160deg, #F2FBFA 0%, #FFFFFF 100%);
    --pad-container: 4.5rem 0;
}

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

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Inter", "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button,
input {
    font-family: inherit;
    font-size: inherit;
}

.page-wrap {
    overflow-x: hidden;
}

.container {
    width: min(92%, 1200px);
    margin: 0 auto;
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 200;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(229, 225, 219, 0.7);
}

.nav-shell {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
}

.brand-group {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo-disc {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    background: var(--grad-main);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 21px;
    font-weight: 800;
    box-shadow: 0 6px 16px rgba(232, 77, 61, 0.25);
}

.logo-name {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.2px;
    color: var(--ink);
    white-space: nowrap;
}

.logo-name small {
    font-size: 12px;
    font-weight: 500;
    color: var(--muted);
    margin-left: 2px;
    display: block;
}

.nav-center {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.nav-menu {
    display: flex;
    gap: 4px;
    align-items: center;
}

.nav-menu a {
    position: relative;
    padding: 10px 14px;
    font-size: 14px;
    font-weight: 500;
    color: #3D424A;
    border-radius: 10px;
    transition: color .2s ease, background .2s ease;
}

.nav-menu a:hover {
    color: var(--coral-deep);
    background: rgba(255, 107, 74, 0.06);
}

.nav-menu a.active-nav {
    color: var(--coral-deep);
    font-weight: 600;
}

.nav-menu a.active-nav::after {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 1px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--grad-main);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cmd-search {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #F1EFEC;
    border: 1px solid #E7E3DE;
    padding: 7px 12px;
    border-radius: 999px;
    color: #8B9098;
    font-size: 13px;
    width: 200px;
    cursor: default;
    transition: border .2s ease, box-shadow .2s ease;
}

.cmd-search:hover {
    border-color: #d5d2ce;
    box-shadow: 0 2px 10px rgba(30, 34, 38, 0.04);
}

.cmd-search kbd {
    background: #fff;
    border: 1px solid #E7E3DE;
    border-radius: 6px;
    padding: 1px 7px;
    font-size: 11px;
    color: #b0a89f;
    letter-spacing: .2px;
    font-family: inherit;
}

.btn-primary, .btn-nav {
    background: var(--grad-main);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(232, 77, 61, .16);
    transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
}

.btn-primary:hover, .btn-nav:hover {
    filter: brightness(1.05);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(232, 77, 61, .26);
}

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

.drawer-switch {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.burger-btn {
    display: none;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: #fff;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.burger-btn i {
    width: 18px;
    height: 2px;
    background: var(--ink);
    border-radius: 4px;
}

.mobile-drawer {
    display: none;
}

.mobile-drawer nav {
    display: flex;
    flex-direction: column;
    padding: 12px 20px 28px;
    gap: 4px;
}

.mobile-drawer a {
    padding: 12px 8px;
    font-size: 15px;
    border-radius: 10px;
    color: var(--ink);
    border-bottom: 1px solid #f0eeeb;
}

.mobile-drawer a:hover {
    background: #F7F5F2;
    color: var(--coral-deep);
}

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

.drawer-switch:checked ~ .mobile-drawer {
    display: block;
    border-top: 1px solid #f0eeeb;
    background: #fff;
}

/* ===== Breadcrumb ===== */
.breadcrumb-row {
    padding: 25px 0 10px;
    font-size: 13px;
    color: #90969d;
}

.breadcrumb-row a {
    color: #a0897f;
    transition: color .2s;
}

.breadcrumb-row a:hover {
    color: var(--coral-deep);
}

.breadcrumb-row .crumb-split {
    margin: 0 8px;
    color: #c7c2ba;
}

.breadcrumb-row .curr {
    color: var(--ink);
    font-weight: 500;
}

/* ===== Article Main ===== */
.article-main {
    padding-bottom: 2rem;
}

.article-card {
    max-width: 940px;
    margin: 28px auto 0;
    background: #fff;
    border-radius: 28px;
    box-shadow: var(--shadow-1);
    overflow: hidden;
    border: 1px solid rgba(230, 226, 220, .5);
}

.article-head {
    padding: 52px 56px 34px;
    background:
        radial-gradient(circle at 90% 10%, rgba(255, 138, 92, .13) 0, rgba(255, 138, 92, 0) 48%),
        radial-gradient(circle at 10% 100%, rgba(15, 181, 166, .1) 0%, rgba(15, 181, 166, 0) 38%),
        #fff;
    border-bottom: 1px solid #f2efe9;
}

.cate-chip-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 22px;
}

.cate-chip {
    background: linear-gradient(135deg, rgba(255, 138, 92, .12), rgba(232, 77, 61, .1));
    color: var(--coral-deep);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 999px;
}

.date-text {
    color: #8a8f95;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.date-text i {
    width: 13px;
    height: 13px;
    border: 2px solid #c2bdb6;
    border-radius: 50%;
    position: relative;
}

.date-text i::after {
    content: "";
    position: absolute;
    inset: 3px;
    background: var(--teal);
    border-radius: 50%;
}

.article-title {
    font-size: clamp(30px, 4.4vw, 42px);
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: -0.3px;
    margin: 0 0 22px;
    color: #1f2328;
}

.article-subdesc {
    max-width: 760px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.9;
    margin: 0 0 14px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-body {
    padding: 44px 56px 32px;
    font-size: 16px;
    line-height: 2;
    color: #30363E;
}

.article-body h2, .article-body h3 {
    line-height: 1.5;
    margin: 2.1em 0 .8em;
    color: #20242a;
    font-weight: 750;
}

.article-body h2 {
    font-size: 25px;
}

.article-body h3 {
    font-size: 20px;
}

.article-body p {
    margin: 0 0 1.5em;
    line-height: 2;
}

.article-body img {
    width: 100%;
    border-radius: 18px;
    margin: 28px 0;
    object-fit: cover;
    box-shadow: 0 8px 24px rgba(30, 34, 38, .08);
}

.article-body blockquote {
    margin: 28px 0;
    border-left: 4px solid var(--teal);
    background: #F0FCFB;
    padding: 18px 24px;
    border-radius: 0 14px 14px 0;
    color: #3e5558;
}

.article-body ul, .article-body ol {
    padding-left: 24px;
    margin: 0 0 1.6em;
}

.article-body li {
    margin: .4em 0;
}

.article-body a {
    text-decoration: underline;
    text-decoration-color: rgba(255, 107, 74, .5);
    text-underline-offset: 4px;
    color: var(--coral-deep);
}

.article-body table {
    border-collapse: collapse;
    width: 100%;
    margin: 26px 0;
}

.article-body th {
    background: #F8F5F0;
    color: #20242a;
    text-align: left;
    padding: 14px 16px;
    border: 0;
    font-weight: 600;
}

.article-body td {
    padding: 12px 16px;
    border-bottom: 1px solid #ece8e1;
}

.article-body code {
    background: #F5F4F1;
    padding: 2px 8px;
    border-radius: 6px;
    font-family: "SFMono-Regular", consolas, monospace;
    font-size: 14px;
    color: #3f3f46;
}

.article-conclusion {
    max-width: 940px;
    margin: 24px auto 0;
    padding: 26px 30px;
    background: linear-gradient(145deg, #F6F4F0, #fff);
    border-radius: 18px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border: 1px solid #ece7e0;
}

.conclusion-tip p {
    margin: 0 0 4px;
    font-size: 15px;
    color: #3a4047;
    font-weight: 600;
}

.conclusion-tip span {
    font-size: 13px;
    color: #8c939c;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid #CDD0D2;
    color: #2F343A;
    background: #fff;
    padding: 10px 20px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    transition: border .2s, color .2s, transform .2s;
}

.btn-outline:hover {
    border-color: var(--coral);
    color: var(--coral-deep);
    transform: translateY(-2px);
}

.btn-outline i {
    transition: transform .2s;
}

.btn-outline:hover i {
    transform: translateX(4px);
}

/* ===== Not Found ===== */
.not-found-wrap {
    max-width: 780px;
    margin: 60px auto 0;
    background: #fff;
    border-radius: var(--radius-lg);
    text-align: center;
    padding: 80px 30px;
    box-shadow: var(--shadow-1);
    border: 1px solid #f0ece5;
}

.not-found-wrap img {
    width: 120px;
    margin: 0 auto 30px;
    border-radius: 24px;
}

.not-found-wrap h1 {
    font-size: 28px;
    color: #252a30;
    margin: 0 0 12px;
}

.not-found-wrap p {
    color: #858c94;
    font-size: 15px;
    margin: 0 auto 34px;
    max-width: 420px;
    line-height: 1.9;
}

/* ===== Related ===== */
.related-area {
    padding: var(--pad-container);
    max-width: 1200px;
    margin: 0 auto;
}

.area-title-wrap {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 30px;
}

.area-title-wrap h2 {
    font-size: clamp(26px, 3vw, 34px);
    font-weight: 800;
    margin: 0;
    line-height: 1.3;
    letter-spacing: -0.2px;
}

.area-title-wrap p {
    color: var(--muted);
    font-size: 14px;
    margin: 8px 0 0;
    max-width: 680px;
    line-height: 1.8;
}

.rel-card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.rel-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #ECE8E1;
    transition: transform .25s ease, box-shadow .25s ease;
}

.rel-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2);
}

.rel-card .rel-img {
    display: block;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    background: #f0ede8;
}

.rel-card .rel-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.rel-card:hover .rel-img img {
    transform: scale(1.06);
}

.rel-card-inner {
    padding: 18px 20px 20px;
}

.rel-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.rel-card-meta span {
    color: var(--coral-deep);
    background: rgba(255,107,74,.1);
    padding: 2px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 999px;
}

.rel-card-meta i {
    color: #b3a89e;
    font-size: 12px;
    font-style: normal;
}

.rel-card h3 {
    font-size: 16px;
    line-height: 1.6;
    font-weight: 750;
    margin: 0 0 8px;
    color: #20242a;
}

.rel-card p {
    color: #868c93;
    font-size: 13px;
    line-height: 1.8;
    margin: 0 0 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rel-more {
    font-size: 13px;
    font-weight: 600;
    color: var(--coral-deep);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.rel-more::after {
    content: "→";
    font-size: 15px;
    transition: transform .2s;
}

.rel-card:hover .rel-more::after {
    transform: translateX(4px);
}

/* ===== CTA Band ===== */
.cta-band {
    max-width: 1200px;
    margin: 0 auto 60px;
    background:
        radial-gradient(circle at 85% 20%, rgba(255, 138, 92, .24) 0%, transparent 42%),
        linear-gradient(135deg, #1E2226 20%, #23262B 100%);
    border-radius: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 46px 52px;
    position: relative;
    overflow: hidden;
}

.cta-band::before {
    content: "";
    position: absolute;
    width: 300px;
    height: 300px;
    right: -80px;
    top: -70px;
    border: 1.5px solid rgba(255,255,255,.16);
    border-radius: 50%;
    background: transparent;
}

.cta-band-wording {
    color: #fff;
    max-width: 640px;
}

.cta-band-wording h2 {
    font-size: 26px;
    font-weight: 800;
    margin: 0 0 8px;
    letter-spacing: -0.2px;
}

.cta-band-wording p {
    font-size: 14px;
    color: rgba(255, 255, 255, .64);
    line-height: 1.9;
    margin: 0;
}

.cta-band .btn-primary {
    position: relative;
    z-index: 1;
    min-width: 160px;
    font-size: 15px;
}

/* ===== Footer ===== */
.page-footer {
    background: #1E2226;
    color: #fff;
    padding: 52px 0 30px;
}

.footer-layout {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 28px;
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 13px;
    min-width: 230px;
}

.footer-brand .logo-disc {
    width: 42px;
    height: 42px;
    background: var(--grad-main);
}

.footer-right-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 24px;
    justify-content: flex-end;
}

.footer-right-links a {
    color: rgba(255, 255, 255, .66);
    font-size: 14px;
    font-weight: 500;
    transition: color .2s;
}

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

.footer-bottom-line {
    border-top: 1px solid rgba(255,255,255,.12);
    margin-top: 30px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .cmd-search {
        width: 150px;
    }

    .nav-menu a {
        padding: 10px 8px;
        font-size: 14px;
    }

    .rel-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 880px) {
    .nav-center {
        display: none;
    }

    .cmd-search {
        display: none;
    }

    .nav-right .btn-nav {
        display: none;
    }

    .burger-btn {
        display: inline-flex;
    }

    .article-head {
        padding: 38px 28px 28px;
    }

    .article-body {
        padding: 32px 24px 24px;
    }
}

@media (max-width: 640px) {
    .nav-shell {
        height: 64px;
    }

    .rel-card-grid {
        grid-template-columns: 1fr;
    }

    .cta-band {
        flex-direction: column;
        padding: 38px 26px;
        text-align: center;
        gap: 20px;
    }

    .area-title-wrap {
        flex-direction: column;
        align-items: flex-start;
    }

    .cta-band .btn-primary {
        width: 100%;
    }

    .conclusion-tag-list {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .logo-name {
        font-size: 17px;
    }

    .logo-disc {
        width: 36px;
        height: 36px;
        border-radius: 12px;
        font-size: 17px;
    }

    .article-main {
        padding-bottom: 6px;
    }

    .article-card {
        margin: 14px -6px 0;
        border-radius: 20px;
    }

    .article-title {
        font-size: 27px;
    }

    .article-head {
        padding: 30px 20px 24px;
    }

    .article-body {
        padding: 26px 20px 20px;
        font-size: 15px;
        line-height: 1.95;
    }

    .article-body h2 {
        font-size: 21px;
    }

    .cta-band-wording h2 {
        font-size: 22px;
    }

    .footer-layout {
        flex-direction: column;
    }

    .footer-right-links {
        justify-content: flex-start;
    }

    .footer-bottom-line {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* roulang page: category2 */
:root{
  --primary:#FF6B4A;
  --primary-soft:#FF8A5C;
  --primary-deep:#E84D3D;
  --teal:#0FB5A6;
  --teal-soft:#D9F5F2;
  --bg:#F7F6F3;
  --bg-light:#FFF7F4;
  --card:#FFFFFF;
  --ink:#1E2226;
  --muted:#687076;
  --border:#E7E5E0;
  --border-strong:#D8D9D5;
  --shadow-sm:0 4px 20px rgba(232,77,61,.07);
  --shadow-md:0 12px 30px rgba(30,34,38,.08);
  --radius-xl:24px;
  --radius-lg:18px;
  --radius-md:12px;
  --gradient:linear-gradient(135deg,#FF8A5C 0%,#FF6B4A 55%,#E84D3D 100%);
  --gradient-soft:linear-gradient(160deg,#FFF4EF 0%,#FDF9F7 100%);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{font-family:var(--font-sans);background:var(--bg);color:var(--ink);line-height:1.75;font-size:15px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input{font-family:inherit;font-size:inherit}
.container{width:min(1180px,100% - 48px);margin-inline:auto}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:4px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:12px;font-weight:600;font-size:14px;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:all .22s ease;white-space:nowrap}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 6px 18px rgba(232,77,61,.2)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(232,77,61,.28);filter:saturate(1.06)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:#fff;border-color:var(--border-strong);color:var(--ink)}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary-deep);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-ghost{background:transparent;color:var(--ink);border-color:transparent}
.btn-ghost:hover{background:rgba(255,107,74,.08);color:var(--primary-deep)}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:10px}
.btn-lg{padding:15px 26px;font-size:16px;border-radius:14px}

/* Header */
.site-header{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(225,222,216,.8)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand-logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-disc{width:38px;height:38px;border-radius:50%;background:var(--gradient);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;box-shadow:0 4px 12px rgba(232,77,61,.24);transform:rotate(-6deg)}
.logo-text{font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--ink);line-height:1.2}
.logo-text small{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.3em}
.nav-center{flex:1;display:flex;justify-content:center;min-width:0}
.nav-menu{display:flex;align-items:center;gap:6px;justify-content:center}
.nav-menu a{position:relative;padding:8px 13px;font-size:14px;font-weight:500;color:#4A5054;border-radius:10px;transition:all .22s ease}
.nav-menu a:hover{color:var(--primary-deep);background:rgba(255,107,74,.07)}
.nav-menu a.active-nav{color:var(--primary-deep);font-weight:700;background:rgba(255,107,74,.08)}
.nav-menu a.active-nav::after{content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);width:5px;height:5px;background:var(--gradient);border-radius:50%}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.cmd-search{display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 10px 0 13px;background:#F1F0EC;border:1px solid transparent;border-radius:999px;font-size:12px;color:#7C8285;cursor:text;transition:all .22s}
.cmd-search i{font-size:12px}
.cmd-search:hover{border-color:rgba(255,107,74,.35);background:#fff}
.cmd-search kbd{border:1px solid #E1DFdA;border-bottom-width:2px;background:#fff;border-radius:6px;padding:1px 6px;font-size:11px;color:#9A9E9F;font-family:inherit}
.nav-burger{display:none;width:38px;height:38px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--ink);cursor:pointer;align-items:center;justify-content:center;font-size:16px}
.mobile-menu{display:none;position:fixed;inset:0;z-index:260;background:rgba(247,246,243,.98);backdrop-filter:blur(20px);padding:90px 28px 32px;overflow-y:auto}
.mobile-menu.is-open{display:block}
.mobile-menu-nav{display:flex;flex-direction:column;gap:8px}
.mobile-menu-nav a{padding:14px 16px;background:var(--card);border-radius:14px;font-weight:600;font-size:18px;color:var(--ink);border:1px solid var(--border)}
.mobile-menu-nav a.active-nav{background:var(--gradient);color:#fff;border-color:transparent}
.mobile-close{position:absolute;top:20px;right:24px;width:42px;height:42px;border-radius:50%;background:var(--card);border:1px solid var(--border);font-size:16px;cursor:pointer;color:var(--ink)}
.mobile-footer-note{margin-top:28px;padding:18px;background:rgba(15,181,166,.08);border:1px solid rgba(15,181,166,.2);border-radius:14px;font-size:13px;color:#487A76}
@media(max-width:880px){
  .nav-center,.nav-actions{display:none}
  .nav-burger{display:inline-flex;margin-left:auto}
}

/* Footer */
.page-footer{background:#1E2226;color:#fff;margin-top:0;position:relative;overflow:hidden}
.page-footer .container{padding:46px 24px 30px}
.footer-layout{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand .logo-disc{width:42px;height:42px;font-size:22px;filter:none;box-shadow:none}
.footer-brand strong{font-size:18px}
.footer-brand span.desc{display:block;font-size:12px;color:rgba(255,255,255,.38);letter-spacing:.1em}
.footer-right-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap;max-width:560px;justify-content:flex-end}
.footer-right-links a{position:relative;font-size:13px;padding:0 0 1px;font-weight:400;color:rgba(255,255,255,.62);transition:color .2s}
.footer-right-links a:after{content:"";position:absolute;left:50%;right:50%;bottom:-5px;height:1px;background:var(--primary);transition:.25s}
.footer-right-links a:hover{color:#fff}
.footer-right-links a:hover::after{left:0;right:0}
.footer-copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:26px;padding-top:20px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:rgba(255,255,255,.4)}
@media(max-width:760px){.footer-layout{flex-direction:column}.footer-right-links{justify-content:flex-start;gap:14px}}

/* Hero */
.page-hero{position:relative;overflow:hidden;padding:82px 0 76px;background:
 linear-gradient(180deg, rgba(255,247,244,.96) 0%, rgba(255,255,255,1) 100%)}
.page-hero::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') no-repeat top center / cover;opacity:.13;z-index:0;pointer-events:none}
.page-hero::after{content:"";position:absolute;right:-180px;top:-120px;width:420px;height:420px;border:58px solid rgba(15,181,166,.09);border-radius:50%;pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border:1px solid rgba(255,107,74,.22);background:rgba(255,255,255,.72);color:var(--primary-deep);border-radius:999px;font-size:12px;font-weight:600}
.hero-eyebrow i{color:var(--primary)}
.hero-copy h1{font-size:42px;line-height:1.24;font-weight:800;letter-spacing:-.02em;margin:18px 0 20px}
.gradient-text{background:linear-gradient(110deg,var(--primary-deep) 10%,var(--primary) 60%,var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:16px;color:#5A6064;max-width:620px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;padding-top:20px;border-top:1px solid rgba(30,34,38,.08);font-size:13px;color:#596066}
.hero-trust i{color:var(--teal);margin-right:5px}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:28px}
.hero-stat{display:flex;flex-direction:column}
.hero-stat strong{font-size:28px;color:var(--primary-deep);font-weight:800;letter-spacing:-.02em;line-height:1.2}
.hero-stat span{font-size:12px;color:var(--muted);margin-top:2px}
.hero-visual{display:flex;justify-content:center;align-items:center}
.hero-visual-panel{position:relative;width:100%;max-width:480px;background:#fff;border-radius:24px;padding:14px;box-shadow:var(--shadow-md);border:1px solid rgba(255,255,255,.7);transform:rotate(1deg)}
.hero-visual-panel .photo{border-radius:18px;overflow:hidden;height:260px;background:#EDECE8}
.hero-visual-panel .photo img{width:100%;height:100%;object-fit:cover}
.visual-tag{display:flex;align-items:center;gap:8px;margin-top:14px;padding:0 5px;font-size:12px;color:var(--muted)}
.visual-tag i{color:var(--teal)}
.visual-badge{position:absolute;right:-14px;top:-14px;padding:9px 16px;background:var(--gradient);color:#fff;font-size:12px;border-radius:999px;box-shadow:0 8px 18px rgba(232,77,61,.25)}
@media(max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero-visual{order:2}
  .hero-visual-panel{max-width:520px;margin:0 auto}
}
@media(max-width:640px){
  .page-hero{padding:54px 0 48px}
  .hero-copy h1{font-size:30px}
  .hero-lead{font-size:15px}
  .hero-stats{gap:16px;justify-content:space-between}
  .hero-stat strong{font-size:22px}
}

/* Sections */
.section{padding:92px 0}
.section-white{background:#fff}
.section-tint{background:var(--gradient-soft)}
.section-dark{background:#1E2226;color:#fff}
@media(max-width:800px){.section{padding:60px 0}}
.section-head{margin-bottom:40px;max-width:760px}
.section-kicker{display:inline-flex;align-items:center;gap:6px;color:var(--primary-deep);font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px}
.section-head h2{font-size:34px;line-height:1.3;letter-spacing:-.02em;font-weight:800;}
.section-head p{font-size:15px;color:var(--muted);margin-top:14px;line-height:1.85}
@media(max-width:640px){.section-head h2{font-size:27px}}
.section-head.light p{color:rgba(255,255,255,.55)}
.section-head.light .section-kicker{color:var(--primary-soft)}

/* 透明机制 */
.mechanism-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.mechanism-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:38px 34px;transition:box-shadow .3s ease,transform .3s ease;position:relative;overflow:hidden}
.mechanism-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.mechanism-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--gradient);opacity:0;transition:opacity .25s}
.mechanism-card:hover::before{opacity:1}
.mechanism-icon{display:flex;align-items:center;justify-content:center;width:54px;height:54px;border-radius:16px;background:var(--gradient-soft);color:var(--primary-deep);font-size:22px;margin-bottom:22px}
.mechanism-teal .mechanism-icon{background:rgba(15,181,166,.1);color:var(--teal)}
.mechanism-card h3{font-size:21px;margin-bottom:14px;line-height:1.4}
.mechanism-card p{font-size:14px;color:#5C6266;margin-bottom:18px}
.mechanism-list li{display:flex;gap:10px;padding:9px 0;border-top:1px dashed #EEE8E4;font-size:14px;color:#363C40}
.mechanism-list i{color:var(--teal);margin-top:5px;font-size:12px}
@media(max-width:820px){.mechanism-wrap{grid-template-columns:1fr}}

/* 数据证明带 */
.proof-band{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.proof-card{background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:26px 22px;display:flex;flex-direction:column;gap:12px;transition:.25s}
.proof-card:hover{background:#fff;border-color:rgba(15,181,166,.5);box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.proof-card .proof-index{font-family:Arial;font-size:13px;font-weight:800;color:var(--teal);letter-spacing:.08em}
.proof-card strong{font-size:28px;line-height:1.2;color:var(--ink);letter-spacing:-.02em;font-family:Arial,"Inter","PingFang SC",sans-serif}
.proof-card span{font-size:13px;color:var(--muted);line-height:1.7;display:flex;align-items:flex-start;gap:8px}
.proof-card span i{margin-top:3px;color:var(--primary)}
@media(max-width:800px){.proof-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.proof-grid{grid-template-columns:1fr}}

/* 活动展示 */
.activity-showcase{display:grid;grid-template-columns:1.12fr .88fr;gap:24px}
.activity-primary{background:#1E2226;color:#fff;border-radius:24px;overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-md)}
.activity-primary .primary-photo{height:240px;overflow:hidden;position:relative}
.activity-primary .primary-photo img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.activity-primary:hover .primary-photo img{transform:scale(1.03)}
.activity-primary .primary-copy{padding:30px 28px 34px;display:flex;flex-direction:column;flex:1}
.flag{display:inline-flex;align-items:center;gap:7px;background:var(--gradient);color:#fff;padding:4px 11px;border-radius:99px;font-size:11px;font-weight:700;width:max-content}
.flag-outline{background:transparent;border:1px solid rgba(255,255,255,.28);color:rgba(255,255,255,.68);padding:4px 11px;border-radius:99px;font-size:11px;width:max-content}
.activity-primary h3{font-size:24px;font-weight:800;margin:16px 0 8px;letter-spacing:-.01em}
.activity-primary p{font-size:14px;color:rgba(255,255,255,.62);line-height:1.8}
.activity-mini-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:20px;padding:16px 0;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:rgba(255,255,255,.55)}
.activity-mini-meta b{color:#fff;display:block;font-size:17px;font-family:Arial}
.activity-primary .btn-primary{margin-top:auto;margin-right:auto}
.side-event-stack{display:flex;flex-direction:column;gap:18px}
.side-event{background:#fff;border:1px solid var(--border);border-radius:20px;overflow:hidden;display:grid;grid-template-columns:150px 1fr;min-height:160px;transition:.25s;box-shadow:0 2px 8px rgba(30,34,38,.03)}
.side-event:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:rgba(255,107,74,.4)}
.side-event img{width:100%;height:100%;object-fit:cover}
.side-event-copy{padding:16px 18px;display:flex;flex-direction:column;gap:5px}
.side-event-copy .tag-line{font-size:12px;color:var(--primary-deep);font-weight:700;display:flex;align-items:center;gap:5px}
.side-event-copy h4{font-size:16px;font-weight:800;color:var(--ink);line-height:1.4}
.side-event-copy p{font-size:12px;color:var(--muted);line-height:1.6}
.side-event-copy .time{font-size:11px;color:#2C3033;background:var(--bg);border-radius:8px;padding:3px 8px;align-self:flex-start;margin-top:6px;font-weight:600}
@media(max-width:980px){
  .activity-showcase{grid-template-columns:1fr}
  .side-event-stack{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .activity-primary h3{font-size:20px}
  .side-event-stack{grid-template-columns:1fr}
  .side-event{grid-template-columns:130px 1fr}
}

/* 流程 */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step-card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:24px 20px;position:relative;transition:.25s;overflow:hidden}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.step-card .step-num{font-family:Arial,Inter;font-size:14px;font-weight:800;color:var(--teal);display:inline-flex;width:28px;height:28px;align-items:center;justify-content:center;background:rgba(15,181,166,.1);border-radius:50%;margin-bottom:16px}
.step-card h4{font-size:16px;font-weight:800;margin-bottom:8px}
.step-card p{font-size:13px;color:var(--muted);line-height:1.75}
@media(max-width:800px){.steps-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.steps-grid{grid-template-columns:1fr}}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:.65fr 1.35fr;gap:48px}
.faq-side .section-head{margin-bottom:18px}
.faq-help{background:#fff;border:1px solid var(--border);border-radius:20px;padding:24px;margin-top:18px}
.faq-help h4{display:flex;align-items:center;gap:8px;font-size:15px}
.faq-help h4 .badge-dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(15,181,166,.14)}
.faq-help p{font-size:13px;color:var(--muted);margin-top:10px}
@media(max-width:860px){.faq-layout{grid-template-columns:1fr;gap:28px}}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-list details{background:var(--card);border:1px solid var(--border);border-radius:16px;transition:.22s}
.faq-list details[open]{border-color:rgba(255,107,74,.4);box-shadow:var(--shadow-sm)}
.faq-list summary{display:flex;align-items:center;justify-content:space-between;gap:14px;cursor:pointer;padding:18px 20px;list-style:none;font-size:15px;font-weight:700;color:var(--ink)}
.faq-list summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--gradient);color:#fff;display:flex;align-items:center;justify-content:center;transition:.3s}
.faq-icon i{font-size:13px;transition:transform .3s}
details[open] .faq-icon i{transform:rotate(135deg)}
.faq-answer{padding:0 20px 20px 48px;font-size:14px;color:#596066;line-height:1.85}
.faq-answer a{color:var(--teal);border-bottom:1px solid currentColor}

/* CTA */
.cta-signup{padding:0 0 90px}
.cta-panel{background:var(--gradient);border-radius:32px;color:#fff;overflow:hidden;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;padding:54px 56px;position:relative}
.cta-panel::before{content:"";position:absolute;right:-80px;bottom:-80px;width:260px;height:260px;border:1px dashed rgba(255,255,255,.24);border-radius:50%}
.cta-panel::after{content:"";position:absolute;right:16px;bottom:24px;width:70px;height:70px;background:white url('/assets/images/coverpic/cover-2.webp') center / cover;border-radius:22px;opacity:.18}
.cta-copy h2{font-size:34px;line-height:1.3;font-weight:800}
.cta-copy p{font-size:14px;color:rgba(255,255,255,.72);margin-top:14px;max-width:460px}
.signup-form{margin-top:22px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);border-radius:18px;padding:18px;backdrop-filter:blur(4px)}
.signup-form label{display:block;font-size:11px;letter-spacing:.08em;color:rgba(255,255,255,.82);font-weight:600;margin-bottom:6px}
.signup-form .field-row{display:flex;gap:10px;flex-wrap:wrap}
.signup-form input[type=email]{flex:1;min-width:180px;padding:11px 14px;border:1px solid rgba(255,255,255,.34);border-radius:12px;background:rgba(255,255,255,.92);font-size:14px;color:var(--ink);outline:none}
.signup-form input[type=email]:focus{border-color:#fff;box-shadow:0 0 0 3px rgba(15,181,166,.24)}
.signup-form .btn-white{background:#1E2226;color:#fff;border:0;padding:11px 22px;border-radius:12px;font-weight:600;cursor:pointer;transition:.22s}
.signup-form .btn-white:hover{transform:translateY(-2px);background:#000}
.privacy-line{display:flex;align-items:flex-start;gap:8px;font-size:12px;color:rgba(255,255,255,.68);margin-top:14px}
.privacy-line input{margin-top:3px}
.form-message{font-size:13px;color:#ffffff;margin-top:10px}
@media(max-width:900px){.cta-panel{grid-template-columns:1fr;padding:24px}.cta-copy h2{font-size:30px}}
@media(max-width:500px){.cta-panel{border-radius:22px}}

/* mobile bottom info */
.banner-note{display:flex;gap:8px;align-items:center;background:rgba(255,255,255,.12);padding:8px 12px;border-radius:10px;margin-top:20px;font-size:13px}
@media(max-width:600px){.container{width:min(100% - 36px,1180px)}}
.mobile-callout{display:block;position:fixed;left:0;right:0;bottom:0;z-index:50;background:var(--ink);color:#fff;padding:14px 18px;font-size:14px;font-weight:600;text-align:center;box-shadow:0 -8px 20px rgba(0,0,0,.1)}
.mobile-callout a{color:var(--primary-soft);font-weight:800;margin-left:4px;border-bottom:1px dashed}
@media(min-width:601px){.mobile-callout{display:none}}
.page-footer{padding-bottom:48px}
@media(max-width:600px){.page-footer{padding-bottom:76px}}

/* roulang page: category3 */
:root {
      --coral: #FF6B4A;
      --coral-light: #FF8A5C;
      --coral-deep: #E84D3D;
      --teal: #0FB5A6;
      --teal-soft: #E5F8F6;
      --bg: #F7F6F3;
      --surface: #FFFFFF;
      --dark: #1E2226;
      --ink: #262B30;
      --muted: #6B747D;
      --line: #E7E5E1;
      --grad-main: linear-gradient(135deg, #FF8A5C 0%, #FF6B4A 55%, #E84D3D 100%);
      --grad-soft: linear-gradient(160deg, #F2FBFA 0%, #FFFFFF 100%);
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --shadow-1: 0 4px 20px rgba(232, 77, 61, 0.08);
      --shadow-2: 0 12px 30px rgba(30, 34, 38, 0.10);
      --header-h: 72px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.7;
      color: var(--ink);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: inherit;
      text-decoration: none;
    }

    button,
    input {
      font-family: inherit;
      font-size: inherit;
    }

    p {
      margin: 0 0 10px;
    }

    .container {
      width: min(1220px, calc(100% - 40px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 80;
      height: var(--header-h);
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(231, 229, 225, 0.9);
      box-shadow: 0 6px 24px rgba(30, 34, 38, 0.03);
    }

    .header-inner {
      height: var(--header-h);
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 13px;
      background: var(--grad-main);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 21px;
      font-weight: 800;
      box-shadow: 0 6px 18px rgba(255, 107, 74, 0.32);
      transform: rotate(-6deg);
    }

    .brand-mark span {
      display: block;
      transform: rotate(6deg);
    }

    .brand-name {
      font-size: 18px;
      font-weight: 700;
      color: var(--dark);
      letter-spacing: 0.02em;
    }

    .nav-center {
      flex: 1;
      display: flex;
      justify-content: center;
      min-width: 0;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 4px;
      background: #F3F2EF;
      border-radius: 14px;
    }

    .nav-menu a {
      position: relative;
      display: inline-flex;
      align-items: center;
      height: 38px;
      padding: 0 16px;
      font-size: 14px;
      color: #555E66;
      border-radius: 10px;
      transition: background .2s ease, color .2s ease;
    }

    .nav-menu a:hover {
      color: var(--dark);
      background: rgba(255, 255, 255, 0.8);
    }

    .nav-menu a.active-nav {
      color: var(--coral-deep);
      background: #fff;
      font-weight: 600;
      box-shadow: 0 2px 10px rgba(30, 34, 38, 0.05);
    }

    .nav-menu a.active-nav::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: 6px;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--grad-main);
      transform: translateX(-50%);
    }

    .header-tools {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .cmd-search {
      display: flex;
      align-items: center;
      gap: 8px;
      width: 210px;
      height: 40px;
      padding: 0 10px 0 14px;
      border: 1px solid #E4E2DE;
      border-radius: 999px;
      background: #F8F8F6;
      color: #979EA5;
      font-size: 13px;
      transition: border-color .2s, background .2s;
    }

    .cmd-search:focus-within {
      border-color: var(--coral);
      background: #fff;
    }

    .cmd-search input {
      border: 0;
      outline: none;
      background: transparent;
      width: 100%;
      color: var(--ink);
      font-size: 13px;
    }

    .cmd-search .key-hint {
      flex-shrink: 0;
      border: 1px solid #D6D4D0;
      background: #fff;
      border-radius: 6px;
      padding: 1px 6px;
      font-size: 11px;
      color: #93999F;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 0;
      border-radius: 12px;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      line-height: 1.4;
      cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, filter .2s ease, color .2s, border-color .2s;
      outline: none;
    }

    .btn:hover {
      transform: translateY(-2px);
    }

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

    .btn:focus-visible {
      outline: 3px solid rgba(15, 181, 166, 0.4);
      outline-offset: 2px;
    }

    .btn-primary {
      background: var(--grad-main);
      color: #fff;
      box-shadow: 0 8px 20px rgba(255, 107, 74, 0.22);
    }

    .btn-primary:hover {
      filter: brightness(1.05);
      box-shadow: 0 10px 24px rgba(255, 107, 74, 0.3);
    }

    .btn-outline {
      background: #fff;
      border: 1px solid #DDE0DF;
      color: #2D3439;
    }

    .btn-outline:hover {
      border-color: var(--coral);
      color: var(--coral-deep);
      box-shadow: 0 6px 18px rgba(255, 107, 74, 0.08);
    }

    .btn-light {
      background: rgba(255, 255, 255, 0.14);
      border: 1px solid rgba(255, 255, 255, 0.4);
      color: #fff;
    }

    .btn-light:hover {
      background: #fff;
      color: var(--dark);
    }

    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      background: #fff;
      border-radius: 12px;
      color: var(--dark);
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }

    .nav-burger-line {
      display: block;
      width: 18px;
      height: 2px;
      background: currentColor;
      margin: 4px auto;
      border-radius: 2px;
      transition: transform .25s, opacity .25s;
    }

    .page-hero {
      position: relative;
      overflow: hidden;
      background:
        linear-gradient(115deg, rgba(30, 34, 38, 0.94) 0%, rgba(31, 42, 44, 0.78) 45%, rgba(15, 181, 166, 0.24) 100%),
        url('/assets/images/backpic/back-2.png') center / cover no-repeat;
      color: #fff;
      padding: 92px 0 84px;
      isolation: isolate;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -1;
      background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
      background-size: 56px 56px;
      mask-image: linear-gradient(to right, rgba(0, 0, 0, 0.9), transparent 80%);
    }

    .hero-inner {
      display: grid;
      grid-template-columns: minmax(0, 1.3fr) minmax(290px, 0.7fr);
      gap: 56px;
      align-items: center;
    }

    .hero-copy .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.16);
      color: rgba(255, 255, 255, 0.9);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 13px;
      margin-bottom: 22px;
      backdrop-filter: blur(8px);
    }

    .hero-copy .eyebrow i {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--teal);
      display: block;
    }

    .hero-copy h1 {
      margin: 0 0 20px;
      font-size: clamp(30px, 4.2vw, 46px);
      line-height: 1.22;
      letter-spacing: -0.01em;
    }

    .hero-copy h1 em {
      font-style: normal;
      background: linear-gradient(90deg, #FFB29D, #FF8A5C, var(--teal));
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-copy .hero-desc {
      max-width: 620px;
      color: rgba(255, 255, 255, 0.82);
      font-size: 16px;
      margin-bottom: 34px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .hero-panel {
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.24);
      border-radius: var(--radius-lg);
      padding: 22px;
      color: #fff;
      box-shadow: 0 18px 48px rgba(0, 0, 0, 0.18);
    }

    .panel-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      margin-bottom: 16px;
      font-size: 13px;
    }

    .live-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #A9F2EA;
    }

    .live-status i {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--teal);
      box-shadow: 0 0 0 4px rgba(15, 181, 166, 0.18);
    }

    .panel-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 10px;
    }

    .panel-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      background: rgba(255, 255, 255, 0.08);
      border-radius: 12px;
      padding: 10px 12px;
      font-size: 13px;
      line-height: 1.5;
    }

    .panel-list li b {
      width: 5px;
      height: 5px;
      border-radius: 50%;
      background: var(--coral-light);
      margin-top: 9px;
      flex-shrink: 0;
    }

    .panel-note {
      margin-top: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.16);
      padding-top: 14px;
      font-size: 12px;
      color: rgba(255, 255, 255, 0.68);
    }

    .quick-strip {
      background: #fff;
      margin-top: -25px;
      position: relative;
      z-index: 3;
      border-radius: 999px;
      box-shadow: var(--shadow-2);
      padding: 8px 12px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      flex-wrap: wrap;
    }

    .quick-strip a {
      flex: 1 1 auto;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 7px;
      padding: 10px 12px;
      font-size: 13px;
      color: #555E66;
      border-radius: 999px;
      transition: background .2s, color .2s;
      white-space: nowrap;
    }

    .quick-strip a:hover {
      background: #FFF0EC;
      color: var(--coral-deep);
    }

    .quick-strip a span {
      width: 6px;
      height: 6px;
      border-radius: 2px;
      background: var(--teal);
      display: inline-block;
      transform: rotate(45deg);
      flex-shrink: 0;
    }

    .section {
      padding: 80px 0;
    }

    .section-alt {
      background: var(--grad-soft);
    }

    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--coral-deep);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      margin-bottom: 14px;
    }

    .section-label::before {
      content: "";
      width: 18px;
      height: 2px;
      background: var(--grad-main);
      border-radius: 3px;
    }

    .section-title {
      font-size: clamp(26px, 3vw, 34px);
      line-height: 1.25;
      color: var(--dark);
      margin: 0 0 16px;
      font-weight: 700;
      letter-spacing: -0.01em;
    }

    .section-lead {
      max-width: 760px;
      color: var(--muted);
      font-size: 15px;
      margin: 0;
    }

    .section-head {
      margin-bottom: 44px;
    }

    .principle-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .principle-card {
      display: flex;
      gap: 20px;
      background: var(--surface);
      border-radius: 20px;
      padding: 30px;
      border: 1px solid rgba(231, 229, 225, 0.7);
      box-shadow: var(--shadow-1);
      transition: transform .2s, box-shadow .2s;
    }

    .principle-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-2);
    }

    .principle-icon {
      width: 54px;
      height: 54px;
      flex-shrink: 0;
      border-radius: 16px;
      background: var(--grad-soft);
      color: var(--coral-deep);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 800;
      border: 1px solid #FBDDD4;
    }

    .principle-card:nth-child(2) .principle-icon {
      color: var(--teal);
      border-color: #C7EEE9;
    }

    .principle-card h3 {
      margin: 0 0 6px;
      font-size: 18px;
      color: var(--dark);
    }

    .principle-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .scope-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .scope-card {
      background: #fff;
      border: 1px solid #F0EFEB;
      border-radius: 22px;
      padding: 26px;
      position: relative;
      overflow: hidden;
      transition: border-color .2s, box-shadow .2s, transform .2s;
    }

    .scope-card:hover {
      border-color: #F4C9BF;
      box-shadow: var(--shadow-2);
      transform: translateY(-3px);
    }

    .scope-card::before {
      content: "";
      position: absolute;
      right: -20px;
      top: -24px;
      width: 90px;
      height: 90px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255, 107, 74, 0.08), transparent 70%);
    }

    .scope-top {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .scope-no {
      font-family: Arial, sans-serif;
      font-size: 12px;
      font-weight: 800;
      color: var(--teal);
      background: #E5F8F6;
      width: 30px;
      height: 30px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
    }

    .scope-card h3 {
      margin: 0;
      font-size: 17px;
      color: var(--dark);
    }

    .scope-card p {
      margin: 0 0 14px;
      font-size: 14px;
      color: var(--muted);
    }

    .scope-tag {
      display: inline-flex;
      gap: 6px;
      flex-wrap: wrap;
      margin-bottom: 14px;
    }

    .scope-tag i {
      font-style: normal;
      background: #F8F7F4;
      border: 1px solid #EDEBE7;
      color: #556066;
      font-size: 12px;
      padding: 2px 9px;
      border-radius: 999px;
    }

    .guide-layout {
      display: grid;
      grid-template-columns: 460px 1fr;
      gap: 54px;
      align-items: center;
    }

    .guide-media {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: var(--shadow-2);
      background: #EFF5F2;
    }

    .guide-media img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .guide-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(30, 34, 38, 0.18), transparent 40%);
      pointer-events: none;
    }

    .guide-caption {
      position: absolute;
      left: 16px;
      bottom: 16px;
      z-index: 3;
      background: rgba(30, 34, 38, 0.7);
      backdrop-filter: blur(8px);
      color: #fff;
      font-size: 12px;
      padding: 6px 13px;
      border-radius: 999px;
      margin: 0;
    }

    .guide-steps {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 0;
    }

    .guide-steps li {
      position: relative;
      display: flex;
      gap: 18px;
      padding: 0 0 28px;
    }

    .guide-steps li:last-child {
      padding-bottom: 0;
    }

    .guide-steps li::before {
      content: "";
      position: absolute;
      left: 21px;
      top: 46px;
      bottom: 4px;
      width: 1px;
      background: #E4E5E1;
    }

    .guide-steps li:last-child::before {
      display: none;
    }

    .step-num {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      background: var(--grad-main);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-weight: 700;
      font-size: 15px;
      box-shadow: 0 6px 16px rgba(255, 107, 74, 0.2);
    }

    .guide-step-body h3 {
      margin: 3px 0 4px;
      font-size: 17px;
      color: var(--dark);
    }

    .guide-step-body p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .guide-callout {
      background: #EEF6F4;
      border-left: 4px solid var(--teal);
      border-radius: 12px;
      padding: 16px 18px;
      margin-top: 30px;
      color: #27443f;
      font-size: 14px;
    }

    .guide-callout strong {
      color: #0E7B70;
    }

    .version-zone {
      background: var(--dark);
      color: #fff;
      border-radius: 28px;
      padding: 56px;
      overflow: hidden;
      position: relative;
    }

    .version-zone::before {
      content: "";
      position: absolute;
      right: -90px;
      top: -100px;
      width: 300px;
      height: 300px;
      background: radial-gradient(circle, rgba(255, 107, 74, 0.3), transparent 70%);
    }

    .version-zone .section-title {
      color: #fff;
    }

    .version-zone .section-lead {
      color: rgba(255, 255, 255, 0.7);
    }

    .version-track {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 44px;
      position: relative;
      z-index: 2;
    }

    .version-step {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 18px;
      padding: 22px;
    }

    .version-step .step-index {
      display: inline-flex;
      width: 30px;
      height: 30px;
      border-radius: 50%;
      border: 1px solid rgba(255, 255, 255, 0.3);
      color: var(--teal);
      font-size: 13px;
      font-weight: 800;
      align-items: center;
      justify-content: center;
      background: rgba(15, 181, 166, 0.1);
      margin-bottom: 14px;
    }

    .version-step h3 {
      margin: 0 0 8px;
      font-size: 17px;
    }

    .version-step p {
      margin: 0;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.65);
      line-height: 1.7;
    }

    .version-note {
      margin-top: 34px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px dashed rgba(255, 255, 255, 0.26);
      border-radius: 14px;
      padding: 16px 20px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.84);
      display: flex;
      gap: 12px;
      align-items: flex-start;
      position: relative;
      z-index: 2;
    }

    .version-note b {
      color: #FFB29D;
    }

    .faq-layout {
      display: grid;
      grid-template-columns: 0.8fr 1.2fr;
      gap: 56px;
      align-items: start;
    }

    .faq-intro {
      background: #fff;
      border-radius: 22px;
      border: 1px solid var(--line);
      padding: 30px;
      box-shadow: var(--shadow-1);
    }

    .faq-intro h3 {
      margin: 0 0 10px;
      font-size: 20px;
      color: var(--dark);
    }

    .faq-intro p {
      color: var(--muted);
      font-size: 14px;
      margin-bottom: 14px;
    }

    .faq-intro .faq-help-list {
      list-style: none;
      padding: 0;
      margin: 20px 0 0;
      display: grid;
      gap: 10px;
    }

    .faq-intro .faq-help-list li {
      display: flex;
      gap: 10px;
      align-items: center;
      font-size: 14px;
      color: #3B464C;
      background: #FBF9F7;
      border-radius: 12px;
      padding: 10px 12px;
    }

    .faq-intro .faq-help-list li::before {
      content: "Lv";
      font-size: 11px;
      font-weight: 800;
      color: var(--coral-deep);
      background: #FFE9E3;
      display: inline-flex;
      width: 28px;
      height: 20px;
      align-items: center;
      justify-content: center;
      border-radius: 999px;
      flex-shrink: 0;
    }

    .faq-list {
      display: grid;
      gap: 12px;
    }

    .faq-item {
      background: #fff;
      border: 1px solid #EBE9E5;
      border-radius: 16px;
      padding: 0 20px;
      overflow: hidden;
      transition: box-shadow .2s, border-color .2s;
    }

    .faq-item[open] {
      box-shadow: var(--shadow-1);
      border-color: #F1C7BC;
    }

    .faq-summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 0;
      font-weight: 600;
      color: var(--dark);
      font-size: 15px;
      line-height: 1.55;
    }

    .faq-summary::-webkit-details-marker {
      display: none;
    }

    .faq-summary::after {
      content: "+";
      flex-shrink: 0;
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: #F8EAE6;
      color: var(--coral-deep);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 400;
      transition: transform .25s, background .25s, color .25s;
    }

    .faq-item[open] .faq-summary::after {
      content: "−";
      transform: rotate(180deg);
      background: var(--teal);
      color: #fff;
    }

    .faq-answer {
      border-top: 1px solid #F1EFEB;
      padding: 15px 0 18px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
    }

    .faq-answer p {
      margin: 0 0 6px;
    }

    .policy-cta {
      background: linear-gradient(120deg, #FFEFEA, #F4FCFA);
      border-top: 1px solid #F3D8D0;
      border-bottom: 1px solid #F3D8D0;
      padding: 70px 0;
    }

    .policy-cta-inner {
      text-align: center;
      max-width: 820px;
      margin: 0 auto;
      display: grid;
      justify-items: center;
      gap: 14px;
    }

    .policy-cta h2 {
      margin: 0;
      font-size: clamp(24px, 3vw, 34px);
      color: var(--dark);
    }

    .policy-cta p {
      margin: 0 0 10px;
      color: var(--muted);
      font-size: 15px;
    }

    .policy-cta .cta-badge {
      display: inline-flex;
      background: var(--grad-main);
      color: #fff;
      padding: 5px 16px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 600;
      box-shadow: 0 8px 20px rgba(255, 107, 74, 0.22);
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-top: 6px;
    }

    .page-footer {
      background: var(--dark);
      color: rgba(255, 255, 255, 0.8);
      padding: 44px 0 30px;
    }

    .footer-layout {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .logo-disc {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      background: var(--grad-main);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 22px;
      font-weight: 800;
    }

    .footer-right-links {
      display: flex;
      flex-wrap: wrap;
      gap: 6px 22px;
      font-size: 14px;
    }

    .footer-right-links a {
      color: rgba(255, 255, 255, 0.66);
      transition: color .2s;
    }

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

    @media (max-width: 1100px) {
      .cmd-search {
        width: 150px;
      }

      .nav-menu a {
        padding: 0 10px;
      }
    }

    @media (max-width: 920px) {
      .nav-toggle {
        display: inline-flex;
      }

      .header-tools .cmd-search {
        display: none;
      }

      .nav-center {
        position: absolute;
        top: var(--header-h);
        left: 14px;
        right: 14px;
        background: #fff;
        border-radius: 18px;
        box-shadow: var(--shadow-2);
        padding: 10px;
        display: none;
        border: 1px solid var(--line);
        max-height: calc(100vh - 120px);
        overflow: auto;
      }

      .nav-center.is-open {
        display: block;
      }

      .nav-menu {
        flex-direction: column;
        align-items: stretch;
        background: transparent;
        padding: 0;
        display: flex;
      }

      .nav-menu a {
        justify-content: flex-start;
        padding: 12px 16px;
        height: auto;
        border-radius: 12px;
      }

      .nav-menu a.active-nav::after {
        left: auto;
        right: 18px;
        bottom: auto;
        top: 50%;
        transform: translateY(-50%);
      }

      .hero-inner {
        grid-template-columns: 1fr;
        gap: 36px;
      }

      .page-hero {
        padding: 64px 0 64px;
      }

      .quick-strip {
        border-radius: 18px;
        justify-content: flex-start;
      }

      .waypoint-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        scrollbar-width: none;
      }

      .quick-strip a {
        white-space: nowrap;
      }

      .principle-grid,
      .scope-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .guide-layout {
        grid-template-columns: 1fr;
        gap: 36px;
      }

      .guide-media img {
        height: 320px;
      }

      .version-track {
        grid-template-columns: repeat(2, 1fr);
      }

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

    @media (max-width: 640px) {
      .heading-actions {
        flex-direction: column;
        margin: 0;
      }

      .container {
        width: min(100% - 22px, 1220px);
      }

      .hero-copy h1 {
        font-size: 30px;
      }

      .page-hero {
        padding: 44px 0 52px;
      }

      .hero-panel {
        padding: 18px;
      }

      .section {
        padding: 56px 0;
      }

      .principle-grid,
      .scope-grid {
        grid-template-columns: 1fr;
      }

      .principle-card {
        padding: 22px;
        flex-direction: column;
        gap: 12px;
      }

      .scope-card {
        padding: 22px;
      }

      .version-zone {
        padding: 32px 20px;
      }

      .version-track {
        grid-template-columns: 1fr;
      }

      .quick-strip {
        display: none;
      }

      .guide-media img {
        height: 240px;
      }

      .faq-answer {
        padding: 12px 0 16px;
      }

      .footer-layout,
      .footer-brand,
      .footer-right-links {
        flex-direction: column;
        align-items: flex-start;
      }

      .footer-right-links {
        gap: 8px 0;
      }

      .brand-name {
        font-size: 16px;
      }

      .header-tools .btn {
        padding: 0 14px;
        height: 38px;
        font-size: 13px;
      }
    }

/* roulang page: category4 */
:root{
  --coral:#FF6B4A;
  --coral-weak:#FF8A5C;
  --coral-deep:#E84D3D;
  --teal:#0FB5A6;
  --teal-dark:#0A9388;
  --teal-wash:#E5F9F6;
  --teal-soft:#F2FBFA;
  --bg:#F7F6F3;
  --surface:#FFFFFF;
  --ink:#202428;
  --ink-soft:#5F666D;
  --muted:#8A9096;
  --line:#E4E4E1;
  --dark:#1E2226;
  --r-xl:24px;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --shadow-sm:0 4px 20px rgba(232,77,61,0.08);
  --shadow-md:0 12px 30px rgba(30,34,38,0.10);
  --shadow-lg:0 24px 60px rgba(30,34,38,0.12);
  --container:1200px;
  --grad:linear-gradient(135deg,#FF8A5C 0%,#FF6B4A 55%,#E84D3D 100%);
}
*{box-sizing:border-box}
html{scroll-padding-top:96px;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
main{display:block;overflow:hidden}
h1,h2,h3,h4,p,ul,li{margin:0}
ul{list-style:none;padding:0}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section-block{padding:88px 0}
.section-head{margin-bottom:42px}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--teal-dark);background:rgba(15,181,166,.12);
  font-size:13px;font-weight:600;padding:5px 14px;border-radius:999px;
  letter-spacing:.4px;
}
.section-title{font-size:clamp(27px,3vw,38px);line-height:1.28;font-weight:700;letter-spacing:-.5px}
.section-desc{max-width:740px;color:var(--ink-soft);font-size:16px;margin-top:12px}
.section-title.white{color:#fff}
.section-desc.light{color:rgba(255,255,255,.70)}

/* header nav */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,246,243,.92);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(30,34,38,.08);
}
.header-row{display:flex;align-items:center;min-height:72px;gap:22px;justify-content:space-between}
.brand-logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.logo-disc{
  width:38px;height:38px;border-radius:50%;
  background:var(--grad);color:#fff;font-weight:800;font-size:20px;
  display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(232,77,61,.26);
}
.brand-name{font-size:19px;font-weight:800;letter-spacing:-.2px;line-height:1.1}
.brand-name small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.4px}
.nav-center{flex:1;display:flex;justify-content:center;min-width:0}
.nav-menu{display:flex;align-items:center;gap:28px}
.nav-menu a{display:inline-block;position:relative;padding:12px 0;font-size:15px;font-weight:500;color:#3C4247;line-height:1.2;transition:color .2s ease}
.nav-menu a::after{
  content:"";position:absolute;left:50%;bottom:-1px;width:6px;height:6px;
  border-radius:999px;background:var(--grad);
  transform:translateX(-50%) scale(0);transition:transform .2s ease;
}
.nav-menu a:hover{color:var(--coral)}
.nav-menu a.active-nav{color:var(--ink);font-weight:700}
.nav-menu a.active-nav::after,.nav-menu a:hover::after{transform:translateX(-50%) scale(1)}
.header-tools{display:flex;align-items:center;gap:12px;flex-shrink:0}
.cmd-search{
  display:inline-flex;align-items:center;gap:8px;
  width:220px;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:8px 12px;color:var(--muted);
  font-size:13px;transition:border-color .2s ease,box-shadow .2s ease;
}
.cmd-search:hover{border-color:rgba(255,107,74,.55);box-shadow:0 0 0 4px rgba(255,107,74,.07)}
.cmd-search svg{width:15px;height:15px;flex-shrink:0}
.cmd-search .search-txt{flex:1;text-align:left;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cmd-search kbd{
  font-family:inherit;font-size:11px;background:var(--bg);
  border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;color:var(--ink-soft);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border-radius:12px;padding:13px 22px;font-size:15px;font-weight:700;
  line-height:1.2;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 4px 20px rgba(232,77,61,.22)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(232,77,61,.28);filter:saturate(1.06)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--ink);border-color:#DDE0DF;box-shadow:0 2px 12px rgba(30,34,38,.05)}
.btn-outline:hover{border-color:var(--coral);color:var(--coral-deep);transform:translateY(-2px)}
.btn-sm{padding:10px 17px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  background:#fff;border-radius:10px;color:var(--ink);
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:20px;height:20px}
.mobile-panel{
  display:none;position:absolute;top:100%;left:0;right:0;
  background:#fff;padding:18px 20px 26px;
  border-bottom:1px solid rgba(30,34,38,.08);box-shadow:var(--shadow-lg);
}
.site-header.is-open .mobile-panel{display:block}
.mobile-panel .mobile-links{display:grid;gap:8px}
.mobile-panel .mobile-links a{
  padding:12px 14px;border-radius:12px;background:#F6F5F2;
  color:var(--ink);font-weight:600;font-size:16px;
  transition:background .2s ease,color .2s ease;
}
.mobile-panel .mobile-links a:hover{background:var(--teal-wash);color:var(--teal-dark)}
.mobile-panel .mobile-links a.active-nav{
  background:linear-gradient(135deg,rgba(255,107,74,.16),rgba(15,181,166,.1));
  color:var(--coral-deep);
}
.mobile-panel .mobile-cta{margin-top:18px}

/* hero */
.service-hero{
  position:relative;overflow:hidden;
  padding:78px 0 84px;
  background:
    radial-gradient(circle at 84% 14%,rgba(255,138,92,.18),transparent 28%),
    radial-gradient(circle at 8% 82%,rgba(15,181,166,.15),transparent 28%),
    linear-gradient(160deg,#F2FBFA 0%,#FFFFFF 72%);
  border-bottom:1px solid rgba(30,34,38,.05);
}
.service-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(30,34,38,.024) 1px,transparent 1px),
    linear-gradient(90deg,rgba(30,34,38,.024) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 38%,#000 62%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 38%,#000 62%,transparent);
}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(300px,.95fr);gap:72px;align-items:center;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:#B63D27;background:rgba(255,107,74,.12);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:700;
  letter-spacing:.4px;
}
.hero-title{font-size:clamp(33px,4.8vw,51px);line-height:1.22;letter-spacing:-1px;font-weight:800;margin:22px 0 18px}
.hero-title em{font-style:normal;color:transparent;background:var(--grad);-webkit-background-clip:text;background-clip:text}
.hero-desc{font-size:16px;color:var(--ink-soft);max-width:620px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero-note{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:16px}
.hero-note svg{width:17px;height:17px;color:var(--teal)}
.hero-visual-card{
  position:relative;border-radius:var(--r-xl);padding:10px;
  background:linear-gradient(150deg,rgba(255,107,74,.45),rgba(255,255,255,.6) 42%,rgba(15,181,166,.42));
  box-shadow:var(--shadow-lg);
}
.hero-visual-card .img-shell{border-radius:20px;overflow:hidden;background:#fff}
.hero-visual-card img{width:100%;height:310px;object-fit:cover}
.float-card{
  position:absolute;bottom:26px;left:-26px;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border:1px solid rgba(30,34,38,.08);
  border-radius:18px;padding:14px 18px;
  box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:12px;
}
.float-dot{
  width:9px;height:9px;border-radius:999px;background:var(--teal);
  box-shadow:0 0 0 6px rgba(15,181,166,.2);animation:pulse 2.4s infinite;
}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(15,181,166,.18)}50%{box-shadow:0 0 0 8px rgba(15,181,166,.08)}}
.float-card strong{display:block;font-size:15px;color:var(--ink);line-height:1.3}
.float-card small{display:block;font-size:12px;color:var(--muted);line-height:1.4}

/* benefits */
.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:34px}
.benefit-card{
  position:relative;background:#fff;border:1px solid rgba(30,34,38,.06);
  border-radius:var(--r-xl);padding:30px 26px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  overflow:hidden;
}
.benefit-card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--grad);opacity:0;transition:opacity .25s ease}
.benefit-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(255,107,74,.18)}
.benefit-card:hover::before{opacity:1}
.benefit-icon{
  width:48px;height:48px;border-radius:16px;display:grid;place-items:center;
  background:rgba(255,107,74,.13);color:var(--coral-deep);margin-bottom:18px;
}
.benefit-icon.teal{background:rgba(15,181,166,.12);color:var(--teal-dark)}
.benefit-icon svg{width:23px;height:23px}
.benefit-card h3{font-size:17px;font-weight:700;line-height:1.4}
.benefit-card p{margin-top:9px;color:var(--ink-soft);font-size:14px;line-height:1.75}

/* catalog */
.catalog-section{
  background:
    linear-gradient(180deg,rgba(15,181,166,.075),rgba(255,255,255,0)),
    var(--surface);
}
.catalog-wrap{
  background:#fff;border:1px solid rgba(30,34,38,.06);border-radius:var(--r-xl);
  box-shadow:var(--shadow-sm);padding:8px 30px;margin-top:38px;
}
.rule-item{
  display:grid;grid-template-columns:minmax(180px,.75fr) minmax(0,1.6fr) minmax(180px,.75fr);
  gap:30px;align-items:center;padding:32px 4px;border-bottom:1px solid var(--line);
}
.rule-item:last-child{border-bottom:0}
.rule-type{display:flex;align-items:center;gap:14px}
.rule-icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;flex-shrink:0}
.rule-icon.coral{background:rgba(255,107,74,.13);color:var(--coral-deep)}
.rule-icon.teal{background:rgba(15,181,166,.12);color:var(--teal-dark)}
.rule-icon svg{width:21px;height:21px}
.rule-type strong{display:block;font-size:15px;line-height:1.35}
.rule-desc{color:var(--ink-soft);font-size:14px;line-height:1.8}
.rule-time{
  border-left:2px solid var(--line);padding-left:16px;
}
.rule-time strong{display:block;color:var(--ink);font-size:15px;line-height:1.4}
.rule-time span{display:block;color:var(--muted);font-size:12px;margin-top:3px;line-height:1.5}

/* process dark */
.process-section{background:var(--dark);color:#fff}
.process-kicker{background:rgba(15,181,166,.2);color:#7AE0D3}
.process-head{max-width:640px}
.step-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:46px}
.step-card{
  position:relative;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.13);border-radius:20px;
  padding:24px 20px;min-height:190px;transition:transform .25s ease,background .25s ease;
}
.step-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.1)}
.step-num{
  font-size:33px;font-weight:800;letter-spacing:-1px;
  background:linear-gradient(135deg,#FFB09B,#FF6B4A 60%,#E84D3D);-webkit-background-clip:text;background-clip:text;
  color:transparent;line-height:1;
}
.step-card h3{font-size:16px;font-weight:700;margin-top:18px;line-height:1.4}
.step-card p{margin-top:8px;color:rgba(255,255,255,.62);font-size:13px;line-height:1.7}

/* metric band */
.metric-section{background:var(--bg)}
.metric-band{
  position:relative;overflow:hidden;border-radius:32px;padding:58px 44px;
  background:
    linear-gradient(110deg,rgba(255,255,255,.96),rgba(255,255,255,.88)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border:1px solid rgba(30,34,38,.06);
  box-shadow:var(--shadow-md);
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
}
.metric-item{
  padding:18px 18px 14px;border-radius:20px;background:rgba(255,255,255,.92);
  border:1px solid rgba(30,34,38,.05);box-shadow:var(--shadow-sm);
  transition:transform .23s ease,box-shadow .23s ease;
}
.metric-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.metric-num{font-size:clamp(32px,4vw,44px);font-weight:800;letter-spacing:-1.5px;line-height:1.2}
.metric-num .num{display:inline-block;color:transparent;background:var(--grad);-webkit-background-clip:text;background-clip:text}
.metric-num .unit{font-size:19px;margin-left:3px;color:var(--ink);font-weight:700}
.metric-label{display:flex;align-items:center;gap:9px;margin-top:8px;color:var(--ink-soft);font-size:14px}
.metric-dot{width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(15,181,166,.14)}

/* faq */
.faq-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.15fr);gap:64px;align-items:start}
.faq-side{position:sticky;top:110px}
.faq-support{
  margin-top:24px;padding:20px 18px;background:#fff;
  border:1px solid rgba(30,34,38,.06);border-radius:18px;
  box-shadow:var(--shadow-sm);display:flex;gap:14px;align-items:flex-start;
}
.faq-support .support-badge{flex-shrink:0;width:38px;height:38px;border-radius:13px;background:rgba(15,181,166,.13);color:var(--teal-dark);display:grid;place-items:center}
.faq-support .support-badge svg{width:19px;height:19px}
.faq-support strong{display:block;font-size:14px;color:var(--ink)}
.faq-support p{margin-top:3px;color:var(--muted);font-size:12px;line-height:1.6}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:23px 2px;font-size:16px;font-weight:700;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--coral-deep)}
.faq-plus{
  flex-shrink:0;width:34px;height:34px;border-radius:999px;display:grid;place-items:center;
  background:rgba(255,107,74,.13);color:var(--coral-deep);transition:transform .32s ease,background .2s ease;
}
.faq-plus svg{width:16px;height:16px;stroke:currentColor;stroke-width:2.2;fill:none;stroke-linecap:round}
.faq-item.open .faq-q{color:var(--coral-deep)}
.faq-item.open .faq-plus{transform:rotate(135deg);background:rgba(255,107,74,.2)}
.faq-a{overflow:hidden;max-height:0;transition:max-height .35s ease,padding .3s ease}
.faq-item.open .faq-a{max-height:720px;padding:0 46px 22px 2px}
.faq-a p{color:var(--ink-soft);font-size:14px;line-height:1.85}

/* contact form */
.contact-section{background:var(--dark);color:#fff}
.contact-kicker{background:rgba(255,255,255,.09);color:#FFB09B}
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:70px;align-items:stretch}
.contact-intro .section-title{margin-top:8px}
.contact-intro .section-desc{color:rgba(255,255,255,.68)}
.contact-list{display:grid;gap:15px;margin-top:30px}
.contact-list li{display:flex;align-items:center;gap:12px;color:rgba(255,255,255,.8);font-size:15px}
.contact-list li svg{width:21px;height:21px;color:#65DED2;flex-shrink:0}
.contact-form-card{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.15);
  border-radius:24px;padding:28px;backdrop-filter:blur(14px);
}
.form-inner .field{display:flex;flex-direction:column}
.form-inner .field + .field{margin-top:16px}
.form-inner label{color:rgba(255,255,255,.65);font-size:13px;font-weight:600;margin-bottom:7px;letter-spacing:.3px}
.form-inner input,.form-inner select{
  width:100%;border:0;background:#fff;color:var(--ink);
  border-radius:11px;padding:13px 14px;font-size:14px;outline:none;
  transition:box-shadow .2s ease;
}
.form-inner input:focus,.form-inner select:focus{box-shadow:0 0 0 4px rgba(15,181,166,.28)}
.form-inner select{cursor:pointer}
.choice-row{
  display:flex;align-items:center;gap:9px;margin:17px 0 20px;
  color:rgba(255,255,255,.58);font-size:12px;
}
.choice-row input{width:auto;accent-color:var(--teal)}
.lead-form .btn-primary{width:100%}
.lead-form.is-success .form-inner{display:none}
.form-success{
  display:none;border-radius:14px;background:rgba(15,181,166,.16);
  border:1px solid rgba(15,181,166,.4);
  padding:28px 20px;text-align:center;
}
.lead-form.is-success .form-success{display:block}
.form-success svg{width:36px;height:36px;color:#65DED2;margin:0 auto 10px}
.form-success h3{color:#fff;font-size:18px}
.form-success p{color:rgba(255,255,255,.65);font-size:13px;margin-top:6px}

/* return cta */
.return-cta{
  position:relative;padding:76px 0;
  background:
    radial-gradient(circle at 18% 50%,rgba(255,138,92,.18),transparent 32%),
    radial-gradient(circle at 82% 30%,rgba(15,181,166,.14),transparent 28%),
    linear-gradient(135deg,#FFF3EE 0%,#FFFFFF 58%,#EDFBF9 100%);
  border-top:1px solid rgba(255,107,74,.12);
}
.return-cta .inner{
  display:flex;align-items:center;justify-content:space-between;gap:38px;flex-wrap:wrap;
  background:rgba(255,255,255,.74);backdrop-filter:blur(12px);
  border:1px solid rgba(30,34,38,.08);border-radius:28px;
  padding:42px 46px;box-shadow:var(--shadow-md);
}
.return-cta h2{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.6px;line-height:1.3}
.return-cta p{color:var(--ink-soft);margin-top:7px;font-size:15px}
.return-cta .actions{display:flex;align-items:center;gap:14px;flex-shrink:0;flex-wrap:wrap}

/* footer */
.page-footer{background:var(--dark);padding:48px 0 34px;color:#fff}
.footer-layout{display:flex;justify-content:space-between;gap:32px;align-items:center;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand .logo-disc{
  width:42px;height:42px;background:var(--grad);
  font-size:21px;display:grid;place-items:center;border-radius:50%;
  color:#fff;font-weight:800;box-shadow:0 6px 18px rgba(232,77,61,.35);
}
.footer-right-links{display:flex;gap:24px;flex-wrap:wrap}
.footer-right-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-right-links a:hover{color:#FF8A5C}

/* responsive */
@media (max-width:1080px){
  .header-tools .cmd-search{display:none}
  .nav-menu{gap:20px}
  .benefit-grid{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:repeat(3,1fr)}
  .metric-band{grid-template-columns:repeat(2,1fr)}
  .rule-item{grid-template-columns:minmax(180px,.8fr) minmax(0,1.4fr)}
  .rule-time{grid-column:1 / -1;border-left:0;padding:12px 16px;background:#F9F6F2;border-radius:14px}
}
@media (max-width:900px){
  .nav-center{display:none}
  .header-tools .btn{display:none}
  .nav-toggle{display:inline-flex}
  .section-block{padding:70px 0}
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero-visual-card{max-width:580px}
  .hero-card img{height:250px}
  .faq-layout{grid-template-columns:1fr;gap:38px}
  .faq-side{position:static}
  .contact-grid{grid-template-columns:1fr;gap:42px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .benefit-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr 1fr}
  .rule-item{grid-template-columns:1fr;gap:16px}
  .catalog-wrap{padding:4px 20px}
  .rule-time{grid-column:1}
  .metric-band{padding:30px 22px}
  .metric-grid{grid-template-columns:1fr 1fr}
  .float-card{left:12px;right:12px;bottom:14px}
  .return-cta .inner{padding:28px 24px}
  .footer-layout{flex-direction:column;align-items:flex-start}
}
@media (max-width:420px){
  .step-grid{grid-template-columns:1fr}
  .metric-band{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .return-cta .actions .btn{width:100%}
}