/* roulang page: index */
:root{
      --orange:#e8752d;--orange-dark:#bd4f16;--ink:#20201d;--muted:#6f6b64;
      --paper:#f7f4ee;--warm:#eee8df;--line:#ddd6ca;--dark:#24231f;
      --white:#fffdf9;--radius:16px;--shadow:0 14px 34px rgba(45,35,24,.08);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    .container{max-width:1200px;margin:auto;padding-left:22px;padding-right:22px}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(247,244,238,.94);border-bottom:1px solid transparent;transition:.25s}
    .site-header.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(30,25,18,.05)}
    .navbar{min-height:76px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.04em}
    .brand-mark{width:29px;height:29px;border-radius:9px;background:var(--orange);position:relative;display:inline-block}
    .brand-mark:after{content:"";position:absolute;width:10px;height:10px;border:2px solid #fff;right:5px;bottom:5px;border-radius:50%}
    .nav-link{font-size:14px;color:#59554e!important;margin:0 4px;padding:10px 12px!important;border-bottom:2px solid transparent}
    .nav-link:hover,.nav-link.active{color:var(--orange-dark)!important;border-bottom-color:var(--orange)}
    .btn-brand,.btn-dark,.btn-line{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;font-size:14px;font-weight:700;border:1px solid transparent;transition:.25s}
    .btn-brand{background:var(--orange);color:#fff}
    .btn-brand:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
    .btn-dark{background:var(--dark);color:#fff}
    .btn-dark:hover{background:#000;color:#fff;transform:translateY(-2px)}
    .btn-line{border-color:#c9c0b4;color:var(--ink);background:transparent}
    .btn-line:hover{border-color:var(--orange);color:var(--orange-dark)}
    .btn-brand:focus,.btn-dark:focus,.btn-line:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(232,117,45,.25);outline-offset:2px}
    .hero{padding:82px 0 74px;background:var(--dark);color:#fff;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(25,24,21,.95) 25%,rgba(25,24,21,.57)),url('/assets/images/7af237f0be5a6ace.jpg') center/cover;opacity:.9}
    .hero .container{position:relative}
    .eyebrow,.section-kicker{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--orange);font-weight:800}
    .hero h1{font-size:clamp(38px,6vw,76px);line-height:1.08;letter-spacing:-.065em;max-width:730px;margin:20px 0 24px;font-weight:850}
    .hero-copy{max-width:650px;color:#ddd7ce;font-size:17px;line-height:1.9;margin-bottom:30px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero .btn-line{border-color:#837b70;color:#fff}
    .hero .btn-line:hover{border-color:var(--orange);color:#fff}
    .hero-panel{margin-top:58px;border-top:1px solid rgba(255,255,255,.22);padding-top:20px;display:flex;gap:30px;flex-wrap:wrap}
    .hero-stat{min-width:160px}.hero-stat strong{display:block;font-size:25px;color:#fff}.hero-stat span{font-size:13px;color:#bcb5aa}
    section{padding:82px 0;border-bottom:1px solid var(--line)}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}
    .section-head h2{font-size:clamp(27px,3.5vw,43px);line-height:1.15;letter-spacing:-.05em;margin:10px 0 0;font-weight:800}
    .section-head p{max-width:440px;color:var(--muted);margin:0;font-size:15px}
    .metrics{background:#ebe5dc}
    .metric-row{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid #d5ccbf}
    .metric{padding:26px 24px;border-right:1px solid #d5ccbf;min-height:140px}
    .metric:last-child{border-right:0}.metric strong{font-size:35px;display:block;color:var(--orange-dark);line-height:1.2}.metric span{font-size:14px;color:var(--muted)}
    .matrix{display:grid;grid-template-columns:1.5fr 1fr 1fr;grid-template-rows:auto auto;gap:14px}
    .matrix-card,.compare-card,.timeline-item,.news-item,.quick-link,.form-box{border:1px solid var(--line);background:var(--white);border-radius:var(--radius);transition:.25s}
    .matrix-card{padding:27px;min-height:180px}.matrix-card:first-child{grid-row:span 2;background:var(--dark);color:#fff;border-color:var(--dark);display:flex;flex-direction:column;justify-content:space-between}
    .matrix-card:hover,.news-item:hover,.quick-link:hover{transform:translateY(-4px);border-color:var(--orange);box-shadow:var(--shadow)}
    .number{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:.1em}.matrix-card h3{font-size:21px;margin:18px 0 8px}.matrix-card p{color:var(--muted);font-size:14px;margin:0}.matrix-card:first-child p{color:#cbc4ba}
    .text-link{display:inline-block;margin-top:18px;color:var(--orange-dark);font-weight:700;font-size:14px}
    .comparison{background:#f0ebe3}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.compare-card{padding:30px}.compare-card.after{border-top:4px solid var(--orange)}.compare-card h3{margin:0 0 15px;font-size:22px}.compare-list{list-style:none;padding:0;margin:0}.compare-list li{padding:11px 0;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}.compare-list li:before{content:"—";color:var(--orange);margin-right:10px;font-weight:bold}
    .timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:20px}.timeline-item{border-radius:0;padding:24px 20px;position:relative;border-right:0}.timeline-item:first-child{border-radius:16px 0 0 16px}.timeline-item:last-child{border-radius:0 16px 16px 0;border-right:1px solid var(--line)}.timeline-item:not(:last-child):after{content:"";position:absolute;right:-8px;top:34px;width:15px;height:15px;background:var(--orange);transform:rotate(45deg);z-index:1}.timeline-item b{font-size:13px;color:var(--orange-dark)}.timeline-item h3{font-size:18px;margin:15px 0 8px}.timeline-item p{font-size:13px;color:var(--muted);margin:0}
    .news-list{display:grid;gap:10px}.news-item{display:grid;grid-template-columns:120px 1fr 105px;align-items:center;padding:18px 22px;border-radius:12px}.news-date{font-size:13px;color:var(--orange-dark);font-weight:700}.news-item h3{font-size:17px;margin:0 0 4px}.news-item p{font-size:13px;color:var(--muted);margin:0}.news-type{text-align:right;font-size:12px;color:var(--muted)}
    .dark-band{background:var(--dark);color:#fff;border-bottom:0}.dark-band .section-head p{color:#bdb6ab}.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#4a4741;border:1px solid #4a4741}.trust-item{background:var(--dark);padding:25px}.trust-item b{display:block;color:var(--orange);font-size:14px;margin-bottom:10px}.trust-item p{color:#c7c0b6;font-size:13px;margin:0}
    .quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.quick-link{padding:22px}.quick-link b{display:block;font-size:17px;margin-bottom:6px}.quick-link span{font-size:13px;color:var(--muted)}
    .faq-wrap{max-width:880px}.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}.accordion-button{background:transparent!important;box-shadow:none!important;padding:22px 4px;font-weight:750;color:var(--ink);font-size:16px}.accordion-button:not(.collapsed){color:var(--orange-dark)}.accordion-body{padding:0 30px 22px 4px;color:var(--muted);font-size:14px}
    .contact{background:#eee7dc}.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:start}.contact h2{font-size:42px;line-height:1.15;letter-spacing:-.05em;margin:12px 0 18px}.contact-copy{color:var(--muted);font-size:15px}.form-box{padding:28px;background:var(--white)}.form-label{font-size:13px;font-weight:700;margin-bottom:6px}.form-control,.form-select{border:1px solid #d3cabe;background:#fffdf9;border-radius:9px;padding:11px 13px}.privacy{font-size:12px;color:var(--muted);margin:14px 0 20px}.site-footer{background:#1f1e1b;color:#d2cbc1;padding:55px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}.footer-brand{color:#fff}.footer-desc{font-size:13px;color:#999187;max-width:310px;margin-top:14px}.footer-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:14px}.footer-links{display:grid;gap:8px;font-size:13px;color:#a9a197}.footer-links a:hover{color:var(--orange)}.copyright{border-top:1px solid #3d3a35;margin-top:40px;padding-top:18px;font-size:12px;color:#817b72}
    @media(max-width:992px){.navbar-collapse{padding:18px 0}.nav-link{border:0;padding:12px 0!important}.matrix{grid-template-columns:1fr 1fr}.matrix-card:first-child{grid-row:auto;grid-column:span 2}.timeline{grid-template-columns:repeat(3,1fr)}.timeline-item{border-right:1px solid var(--line)!important;border-radius:12px!important}.timeline-item:after{display:none}.trust-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){section{padding:62px 0}.hero{padding:62px 0}.hero h1{font-size:46px}.section-head,.contact-grid{display:block}.section-head p{margin-top:18px}.metric-row{grid-template-columns:repeat(2,1fr)}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid #d5ccbf}.compare-grid{grid-template-columns:1fr}.timeline{grid-template-columns:1fr}.news-item{grid-template-columns:90px 1fr}.news-type{display:none}.quick-grid{grid-template-columns:repeat(2,1fr)}.contact h2{font-size:36px}.form-box{margin-top:32px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
    @media(max-width:520px){.container{padding-left:18px;padding-right:18px}.hero h1{font-size:38px}.hero-copy{font-size:15px}.hero-actions .btn-brand,.hero-actions .btn-line{width:100%}.matrix{display:block}.matrix-card{margin-bottom:12px}.metric{padding:20px 16px;min-height:120px}.metric strong{font-size:27px}.news-item{padding:16px 14px;grid-template-columns:1fr}.news-date{margin-bottom:5px}.trust-grid{grid-template-columns:1fr}.quick-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.brand{font-size:18px}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category1 */
:root{
      --orange:#e8752d;--orange-dark:#bd4f16;--ink:#20201d;--muted:#6f6b64;
      --paper:#f7f4ee;--warm:#eee8df;--line:#ddd6ca;--dark:#24231f;
      --white:#fffdf9;--radius:16px;--shadow:0 14px 34px rgba(45,35,24,.08);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    .container{max-width:1200px;margin:auto;padding-left:22px;padding-right:22px}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(247,244,238,.95);border-bottom:1px solid transparent;transition:.25s}
    .site-header.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(30,25,18,.05)}
    .navbar{min-height:76px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.04em}
    .brand-mark{width:29px;height:29px;border-radius:9px;background:var(--orange);position:relative;display:inline-block}
    .brand-mark:after{content:"";position:absolute;width:10px;height:10px;border:2px solid #fff;right:5px;bottom:5px;border-radius:50%}
    .nav-link{font-size:14px;color:#59554e!important;margin:0 4px;padding:10px 12px!important;border-bottom:2px solid transparent}
    .nav-link:hover,.nav-link.active{color:var(--orange-dark)!important;border-bottom-color:var(--orange)}
    .btn-brand,.btn-dark,.btn-line{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;font-size:14px;font-weight:700;border:1px solid transparent;transition:.25s}
    .btn-brand{background:var(--orange);color:#fff}
    .btn-brand:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
    .btn-dark{background:var(--dark);color:#fff}
    .btn-dark:hover{background:#000;color:#fff;transform:translateY(-2px)}
    .btn-line{border-color:#c9c0b4;color:var(--ink);background:transparent}
    .btn-line:hover{border-color:var(--orange);color:var(--orange-dark)}
    .btn-brand:focus,.btn-dark:focus,.btn-line:focus,.nav-link:focus{outline:3px solid rgba(232,117,45,.25);outline-offset:2px}
    .page-intro{padding:86px 0 72px;background:var(--dark);color:#fff;position:relative;overflow:hidden}
    .page-intro:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(25,24,21,.96) 20%,rgba(25,24,21,.65)),url('/assets/images/220ef073286d85bc.jpg') center/cover;opacity:.92}
    .page-intro .container{position:relative}
    .intro-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{font-size:12px;letter-spacing:.16em;color:var(--orange);font-weight:800}
    .page-intro h1{font-size:clamp(40px,6vw,72px);line-height:1.08;letter-spacing:-.065em;margin:18px 0 22px;font-weight:850;max-width:760px}
    .intro-copy{max-width:650px;color:#ddd7ce;font-size:17px;line-height:1.9;margin:0}
    .intro-note{border-left:2px solid var(--orange);padding:10px 0 10px 22px;color:#d9d1c6}
    .intro-note strong{display:block;color:#fff;font-size:27px;line-height:1.25;margin-bottom:8px}
    section{padding:78px 0;border-bottom:1px solid var(--line)}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:32px}
    .section-head h2{font-size:clamp(28px,3.5vw,43px);line-height:1.15;letter-spacing:-.05em;margin:10px 0 0;font-weight:800}
    .section-head p{max-width:440px;color:var(--muted);margin:0;font-size:15px}
    .index-bar{display:flex;gap:10px;flex-wrap:wrap;padding:16px;border:1px solid var(--line);background:var(--white);border-radius:14px}
    .index-link{padding:10px 16px;border:1px solid var(--line);border-radius:9px;font-size:14px;color:var(--muted);background:var(--paper)}
    .index-link:hover,.index-link.active{border-color:var(--orange);color:var(--orange-dark);background:#fff4eb}
    .feature-list{display:grid;gap:14px}
    .feature-card{display:grid;grid-template-columns:74px 1fr 170px;gap:25px;align-items:center;padding:26px 28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);transition:.25s}
    .feature-card:hover{transform:translateY(-3px);border-color:var(--orange);box-shadow:var(--shadow)}
    .feature-num{font-size:30px;font-weight:800;color:var(--orange);letter-spacing:-.06em}
    .feature-card h3{font-size:22px;margin:0 0 7px}
    .feature-card p{font-size:14px;color:var(--muted);margin:0;max-width:670px}
    .feature-meta{text-align:right;color:var(--muted);font-size:12px}
    .feature-meta b{display:block;color:var(--ink);font-size:14px;margin-bottom:9px}
    .more-row{margin-top:22px;text-align:right}
    .text-link{display:inline-block;color:var(--orange-dark);font-weight:700;font-size:14px;border-bottom:1px solid var(--orange);padding-bottom:3px}
    .scenario-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .scenario{padding:30px;border:1px solid var(--line);background:var(--white);border-radius:var(--radius)}
    .scenario.dark{background:var(--dark);color:#fff;border-color:var(--dark)}
    .scenario h3{margin:0 0 12px;font-size:22px}
    .scenario p{margin:0;color:var(--muted);font-size:14px}
    .scenario.dark p{color:#c9c2b8}
    .scenario-tag{display:inline-block;color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.08em;margin-bottom:20px}
    .steps{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
    .step{min-height:190px;padding:24px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white);position:relative}
    .step:nth-child(even){background:#f0ebe3}
    .step-no{display:flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:50%;background:var(--orange);color:#fff;font-weight:800;font-size:14px}
    .step h3{font-size:18px;margin:20px 0 8px}
    .step p{font-size:13px;color:var(--muted);margin:0}
    .version-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:start}
    .version-box{padding:30px;background:var(--dark);color:#fff;border-radius:var(--radius);background-image:linear-gradient(135deg,rgba(36,35,31,.88),rgba(36,35,31,.98)),url('/assets/images/7c70c12d215c9933.jpg');background-size:cover;background-position:center}
    .version-box h3{font-size:28px;line-height:1.25;margin:15px 0}
    .version-box p{color:#c8c0b4;font-size:14px;margin:0}
    .version-list{border-top:1px solid var(--line)}
    .version-item{display:grid;grid-template-columns:120px 1fr;gap:22px;padding:20px 0;border-bottom:1px solid var(--line)}
    .version-item b{color:var(--orange-dark);font-size:14px}
    .version-item h3{font-size:17px;margin:0 0 5px}
    .version-item p{color:var(--muted);font-size:13px;margin:0}
    .faq-wrap{max-width:900px}
    .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
    .accordion-button{background:transparent!important;box-shadow:none!important;padding:21px 4px;font-weight:750;color:var(--ink);font-size:16px}
    .accordion-button:not(.collapsed){color:var(--orange-dark)}
    .accordion-body{padding:0 30px 22px 4px;color:var(--muted);font-size:14px}
    .bottom-cta{padding:64px 0;background:var(--dark);color:#fff}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta-inner h2{font-size:clamp(28px,4vw,44px);line-height:1.15;letter-spacing:-.05em;margin:10px 0 0}
    .cta-inner p{color:#c9c1b6;margin:12px 0 0;max-width:600px}
    .site-footer{background:var(--dark);color:#fff;padding:52px 0 24px;border-top:1px solid #48443d}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}
    .footer-brand{color:#fff;margin-bottom:15px}
    .footer-desc{color:#bdb5aa;font-size:13px;max-width:320px;margin:0}
    .footer-title{font-size:14px;font-weight:800;margin-bottom:14px;color:#fff}
    .footer-links{display:grid;gap:8px}
    .footer-links a{font-size:13px;color:#bdb5aa}
    .footer-links a:hover{color:var(--orange)}
    .copyright{border-top:1px solid #48443d;margin-top:42px;padding-top:20px;color:#938b80;font-size:12px}
    @media (max-width:992px){
      .intro-grid,.version-layout{grid-template-columns:1fr;gap:30px}
      .steps{grid-template-columns:repeat(3,1fr)}
      .feature-card{grid-template-columns:60px 1fr}
      .feature-meta{text-align:left;grid-column:2}
    }
    @media (max-width:768px){
      .navbar{min-height:66px}
      .navbar-collapse{padding:15px 0 8px}
      .nav-link{padding:12px 4px!important;border-bottom:1px solid var(--line)}
      .page-intro{padding:65px 0 58px}
      section{padding:60px 0}
      .section-head,.cta-inner{display:block}
      .section-head p{margin-top:18px}
      .scenario-grid{grid-template-columns:1fr}
      .steps{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
    }
    @media (max-width:520px){
      .container{padding-left:17px;padding-right:17px}
      .page-intro h1{font-size:40px}
      .feature-card{display:block;padding:23px}
      .feature-num{margin-bottom:12px}
      .feature-meta{margin-top:16px}
      .steps{grid-template-columns:1fr}
      .version-item{grid-template-columns:1fr;gap:4px}
      .footer-grid{grid-template-columns:1fr}
      .cta-inner .btn-brand{margin-top:24px;width:100%}
    }
    @media (prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;transition:none!important}
    }

/* roulang page: category2 */
:root{
      --orange:#e8752d;--orange-dark:#bd4f16;--ink:#20201d;--muted:#6f6b64;
      --paper:#f7f4ee;--warm:#eee8df;--line:#ddd6ca;--dark:#24231f;
      --white:#fffdf9;--radius:16px;--shadow:0 14px 34px rgba(45,35,24,.08);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:90px}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;line-height:1.75}
    a{color:inherit;text-decoration:none;transition:color .25s ease,background .25s ease,border-color .25s ease,transform .25s ease,box-shadow .25s ease}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid rgba(232,117,45,.38);outline-offset:3px}
    .container{max-width:1200px;margin:auto;padding-left:22px;padding-right:22px}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(247,244,238,.97);border-bottom:1px solid transparent;transition:.25s}
    .site-header.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(30,25,18,.05)}
    .navbar{min-height:76px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.04em}
    .brand-mark{width:29px;height:29px;border-radius:9px;background:var(--orange);position:relative;display:inline-block;flex:none}
    .brand-mark:after{content:"";position:absolute;width:10px;height:10px;border:2px solid #fff;right:5px;bottom:5px;border-radius:50%}
    .nav-link{font-size:14px;color:#59554e!important;margin:0 4px;padding:10px 12px!important;border-bottom:2px solid transparent}
    .nav-link:hover,.nav-link.active{color:var(--orange-dark)!important;border-bottom-color:var(--orange)}
    .btn-brand,.btn-dark,.btn-line{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:10px;font-size:14px;font-weight:700;border:1px solid transparent;transition:.25s}
    .btn-brand{background:var(--orange);color:#fff}
    .btn-brand:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
    .btn-dark{background:var(--dark);color:#fff}
    .btn-dark:hover{background:#000;color:#fff;transform:translateY(-2px)}
    .btn-line{border-color:#c9c0b4;color:var(--ink);background:transparent}
    .btn-line:hover{border-color:var(--orange);color:var(--orange-dark)}
    .btn-brand:focus,.btn-dark:focus,.btn-line:focus,input:focus,select:focus,textarea:focus{outline:3px solid rgba(232,117,45,.25);outline-offset:2px}
    .navbar-toggler{padding:8px}
    .page-intro{position:relative;overflow:hidden;padding:72px 0 64px;background:var(--dark);color:#fff}
    .page-intro:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(25,24,21,.94) 15%,rgba(25,24,21,.58) 72%,rgba(25,24,21,.72)),url('/assets/images/7c70c12d215c9933.jpg') center 48%/cover;opacity:.92}
    .page-intro .container{position:relative}
    .intro-grid{display:grid;grid-template-columns:1fr 290px;gap:50px;align-items:end}
    .eyebrow,.section-kicker{font-size:12px;letter-spacing:.15em;color:var(--orange);font-weight:800}
    .page-intro h1{font-size:clamp(38px,5.8vw,68px);line-height:1.1;letter-spacing:-.06em;font-weight:850;max-width:760px;margin:18px 0}
    .intro-copy{max-width:690px;color:#ddd7ce;font-size:16px;margin:0}
    .intro-aside{border-left:1px solid rgba(255,255,255,.28);padding:8px 0 8px 24px}
    .intro-aside b{font-size:14px;color:#fff;display:block;margin-bottom:7px}
    .intro-aside span{font-size:13px;color:#c8c1b6}
    .intro-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:26px}
    .tag{display:inline-flex;align-items:center;min-height:29px;padding:3px 11px;border:1px solid var(--line);border-radius:6px;color:var(--muted);font-size:12px;background:rgba(255,253,249,.65)}
    .page-intro .tag{border-color:rgba(255,255,255,.25);color:#eee8df;background:rgba(255,255,255,.06)}
    section{padding:70px 0;border-bottom:1px solid var(--line)}
    .section-head{display:flex;justify-content:space-between;gap:28px;align-items:end;margin-bottom:30px}
    .section-head h2{font-size:clamp(26px,3.3vw,39px);line-height:1.17;letter-spacing:-.05em;margin:9px 0 0;font-weight:800}
    .section-head p{max-width:460px;color:var(--muted);margin:0;font-size:14px}
    .filter-bar{display:flex;gap:9px;flex-wrap:wrap;padding:15px;background:#eee8df;border:1px solid var(--line);border-radius:12px}
    .filter-btn{border:1px solid transparent;border-radius:8px;padding:9px 15px;background:transparent;color:#5e5952;font-size:13px;font-weight:700;transition:.2s}
    .filter-btn:hover,.filter-btn.active{background:var(--dark);color:#fff}
    .feed-layout{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:30px;align-items:start}
    .feed-list{display:grid;gap:12px}
    .feed-item{display:grid;grid-template-columns:104px minmax(0,1fr) 34px;gap:20px;align-items:center;background:var(--white);border:1px solid var(--line);border-radius:13px;padding:21px 22px;transition:.25s}
    .feed-item:hover{transform:translateY(-3px);border-color:var(--orange);box-shadow:var(--shadow)}
    .feed-date{font-size:12px;color:var(--orange-dark);font-weight:800;letter-spacing:.02em}
    .feed-date span{display:block;color:var(--muted);font-weight:500;margin-top:5px}
    .feed-content h3{font-size:18px;line-height:1.4;margin:0 0 7px;letter-spacing:-.02em}
    .feed-content p{font-size:13px;line-height:1.7;color:var(--muted);margin:0}
    .feed-arrow{width:32px;height:32px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--orange-dark);font-size:18px}
    .feed-item:hover .feed-arrow{background:var(--orange);border-color:var(--orange);color:white}
    .feed-aside{background:var(--dark);color:#fff;padding:25px;border-radius:14px;position:sticky;top:100px}
    .feed-aside .aside-label{font-size:11px;letter-spacing:.12em;color:var(--orange);font-weight:800}
    .feed-aside h3{font-size:21px;line-height:1.35;margin:12px 0}
    .feed-aside p{color:#c7c0b6;font-size:13px;margin:0 0 18px}
    .aside-row{border-top:1px solid #49463f;padding:13px 0;display:flex;justify-content:space-between;gap:12px;font-size:13px;color:#ded8cf}
    .aside-row span:last-child{color:#b7afa4}
    .more-row{padding-top:18px}
    .text-link{font-size:14px;font-weight:750;color:var(--orange-dark);display:inline-flex;align-items:center;gap:8px}
    .text-link:hover{color:var(--orange);gap:12px}
    .feature-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:14px}
    .feature-main{position:relative;min-height:300px;overflow:hidden;border-radius:var(--radius);background:var(--dark);color:#fff;padding:30px;display:flex;flex-direction:column;justify-content:end}
    .feature-main:before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(24,23,20,.92),rgba(24,23,20,.1)),url('/assets/images/220ef073286d85bc.jpg') center/cover;opacity:.92;transition:transform .5s}
    .feature-main:hover:before{transform:scale(1.03)}
    .feature-main>*{position:relative}
    .feature-main h3{font-size:27px;line-height:1.25;max-width:560px;margin:12px 0 8px}
    .feature-main p{font-size:14px;color:#e2dcd3;max-width:540px;margin:0}
    .feature-side{display:grid;gap:14px}
    .feature-small{display:flex;flex-direction:column;justify-content:space-between;padding:23px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);min-height:143px;transition:.25s}
    .feature-small:hover{border-color:var(--orange);transform:translateY(-3px);box-shadow:var(--shadow)}
    .feature-small h3{font-size:18px;margin:13px 0 5px}
    .feature-small p{font-size:13px;color:var(--muted);margin:0}
    .timeline{max-width:850px;margin-left:10px;border-left:1px solid #cfc6ba}
    .timeline-entry{position:relative;padding:0 0 28px 30px}
    .timeline-entry:last-child{padding-bottom:0}
    .timeline-entry:before{content:"";position:absolute;left:-6px;top:8px;width:11px;height:11px;background:var(--orange);border:2px solid var(--paper);border-radius:50%;box-shadow:0 0 0 1px var(--orange)}
    .timeline-meta{display:flex;align-items:center;gap:10px;margin-bottom:6px}
    .timeline-meta time{font-size:12px;font-weight:800;color:var(--orange-dark)}
    .timeline-meta .tag{min-height:24px;padding:1px 8px;font-size:11px}
    .timeline-entry h3{font-size:17px;margin:0 0 5px}
    .timeline-entry p{font-size:13px;color:var(--muted);margin:0;max-width:680px}
    .question-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:44px}
    .question-note{padding:25px;background:var(--warm);border-left:3px solid var(--orange);border-radius:0 12px 12px 0}
    .question-note h3{font-size:20px;margin:0 0 8px}
    .question-note p{font-size:13px;color:var(--muted);margin:0}
    .question-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}
    .question-tags a{padding:9px 13px;border:1px solid var(--line);border-radius:8px;background:var(--white);font-size:13px;color:#514d46}
    .question-tags a:hover{border-color:var(--orange);color:var(--orange-dark);transform:translateY(-2px)}
    .reading-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .reading-item{display:grid;grid-template-columns:44px 1fr;gap:15px;align-items:start;padding:20px;background:var(--white);border:1px solid var(--line);border-radius:12px;transition:.25s}
    .reading-item:hover{border-color:var(--orange);box-shadow:var(--shadow);transform:translateY(-3px)}
    .reading-no{font-size:12px;color:var(--orange-dark);font-weight:850;padding-top:2px}
    .reading-item h3{font-size:16px;margin:0 0 6px}
    .reading-item p{font-size:13px;color:var(--muted);margin:0}
    .closing{background:var(--dark);color:#fff;border:0;padding:54px 0}
    .closing-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}
    .closing h2{font-size:clamp(25px,3vw,36px);letter-spacing:-.04em;margin:0 0 8px}
    .closing p{color:#c9c2b8;margin:0;font-size:14px}
    .closing-actions{display:flex;gap:10px;flex-wrap:wrap}
    .closing .btn-line{border-color:#68635a;color:white}
    .site-footer{background:var(--dark);color:#fff;padding:58px 0 24px;border-top:1px solid #45423c}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:55px;padding-bottom:40px}
    .footer-brand{color:#fff}
    .footer-desc{color:#bdb6ab;font-size:13px;max-width:330px;margin:16px 0 0}
    .footer-title{font-weight:750;font-size:14px;margin-bottom:15px}
    .footer-links{display:grid;gap:10px}
    .footer-links a{color:#c5beb4;font-size:13px;width:fit-content}
    .footer-links a:hover{color:var(--orange)}
    .copyright{border-top:1px solid #45423c;padding-top:20px;color:#aaa398;font-size:12px}
    .fade-up{animation:fadeUp .55s ease both}
    @keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
    @media(max-width:991px){
      .navbar-nav{align-items:stretch!important;padding:10px 0 18px}
      .nav-link{padding:12px!important;border-bottom:0;border-left:2px solid transparent}
      .nav-link:hover,.nav-link.active{border-left-color:var(--orange)}
      .intro-grid{grid-template-columns:1fr;gap:24px}
      .intro-aside{border-left:0;border-top:1px solid rgba(255,255,255,.25);padding:17px 0 0}
      .feed-layout{grid-template-columns:1fr}
      .feed-aside{position:static}
      .feed-aside .aside-data{display:grid;grid-template-columns:repeat(3,1fr);gap:0 15px}
      .question-layout{grid-template-columns:1fr;gap:22px}
    }
    @media(max-width:767px){
      .container{padding-left:18px;padding-right:18px}
      .page-intro{padding:54px 0 48px}
      section{padding:54px 0}
      .section-head{display:block}
      .section-head p{margin-top:13px}
      .feed-item{grid-template-columns:78px minmax(0,1fr);gap:13px;padding:17px}
      .feed-arrow{display:none}
      .feed-content h3{font-size:16px}
      .feature-grid{grid-template-columns:1fr}
      .feature-main{min-height:260px}
      .feature-side{grid-template-columns:1fr 1fr}
      .feature-small{min-height:160px;padding:18px}
      .reading-grid{grid-template-columns:1fr}
      .closing-inner{display:block}
      .closing-actions{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      .navbar{min-height:66px}
      .brand{font-size:18px}
      .page-intro h1{font-size:39px}
      .intro-copy{font-size:14px}
      .filter-bar{gap:6px;padding:10px}
      .filter-btn{padding:8px 10px;font-size:12px}
      .feed-date{font-size:11px}
      .feed-date span{font-size:11px}
      .feed-content p{font-size:12px}
      .feature-side{grid-template-columns:1fr}
      .feature-small{min-height:130px}
      .feed-aside .aside-data{grid-template-columns:1fr}
      .closing-actions{display:grid}
      .closing-actions a{width:100%}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-grid>div:first-child{grid-column:auto}
      .copyright{line-height:1.8}
    }
    @media(prefers-reduced-motion:reduce){
      *,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}