/* roulang page: index */
:root{
      --ink:#151321;
      --ink-2:#211e2b;
      --purple:#5b4bdb;
      --lavender:#b9a7ff;
      --coral:#ff6b4a;
      --paper:#f5f2ec;
      --white:#fffdfa;
      --line:#e4dfd6;
      --muted:#686272;
      --green:#3daa82;
      --shadow:0 16px 42px rgba(31,25,49,.09);
      --shadow-soft:0 8px 24px rgba(31,25,49,.06);
      --radius:20px;
      --radius-sm:13px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--paper);color:var(--ink-2);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
      font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{
      outline:3px solid rgba(255,107,74,.52);outline-offset:3px
    }
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{
      position:absolute;z-index:20;top:0;left:0;width:100%;
      border-bottom:1px solid rgba(255,255,255,.12)
    }
    .nav-wrap{height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;color:#fff;min-width:250px;font-weight:750;letter-spacing:-.03em}
    .brand-mark{width:31px;height:31px;position:relative;display:inline-grid;place-items:center;border:1px solid rgba(255,255,255,.72);border-radius:50%}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;border-radius:50%;border:1px solid var(--lavender)}
    .brand-mark:before{width:19px;height:7px;transform:rotate(-26deg)}
    .brand-mark:after{width:6px;height:6px;background:var(--coral);border:0;right:2px;top:4px}
    .main-nav{display:flex;align-items:center;gap:9px}
    .main-nav a{padding:8px 13px;border-radius:9px;color:rgba(255,255,255,.77);font-size:14px;transition:.2s ease}
    .main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-action,.btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;
      border-radius:10px;font-weight:700;transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
    }
    .nav-action{padding:10px 16px;background:var(--coral);color:#fff;font-size:14px}
    .nav-action:hover,.btn-primary:hover{background:#ee5939;box-shadow:0 8px 20px rgba(255,107,74,.28);transform:translateY(-2px)}
    .nav-action:active,.btn:active{transform:translateY(1px) scale(.98)}
    .menu-toggle{display:none;background:none;border:0;color:#fff;padding:8px}
    .menu-toggle span{display:block;width:24px;height:2px;background:currentColor;margin:5px 0;border-radius:2px}
    .hero{background:var(--ink);color:#fff;padding:148px 0 75px;overflow:hidden;position:relative}
    .hero:before{content:"";position:absolute;width:650px;height:650px;border:1px solid rgba(185,167,255,.12);border-radius:50%;right:-270px;top:-270px}
    .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center;position:relative}
    .eyebrow{display:inline-flex;gap:8px;align-items:center;font-size:13px;font-weight:700;letter-spacing:.05em;color:#d7ceff}
    .eyebrow i{width:8px;height:8px;background:var(--coral);border-radius:50%;display:inline-block}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(42px,5.1vw,65px);line-height:1.14;letter-spacing:-.055em;max-width:730px;margin:18px 0 21px}
    .hero-copy{max-width:650px;color:rgba(255,255,255,.73);font-size:17px;line-height:1.85;margin-bottom:28px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
    .btn{padding:13px 19px;font-size:15px}
    .btn-primary{background:var(--coral);color:#fff}
    .btn-secondary{color:#fff;border:1px solid rgba(255,255,255,.3);background:transparent}
    .btn-secondary:hover{background:rgba(255,255,255,.1);transform:translateY(-2px)}
    .map-card{min-height:392px;position:relative;border:1px solid rgba(255,255,255,.17);border-radius:25px;background:#211d32;padding:28px;overflow:hidden}
    .map-card:before,.orbit{position:absolute;border-radius:50%;border:1px solid rgba(185,167,255,.25);content:""}
    .map-card:before{width:360px;height:360px;right:-90px;bottom:-130px}
    .orbit{width:235px;height:235px;right:28px;bottom:20px}
    .orbit:after{content:"";position:absolute;width:10px;height:10px;background:var(--coral);border-radius:50%;top:40px;left:7px;box-shadow:0 0 0 5px rgba(255,107,74,.16)}
    .map-caption{display:flex;justify-content:space-between;align-items:center;position:relative;color:#eeeaff;font-size:14px}
    .map-caption strong{font-size:17px;color:#fff}
    .map-lines{position:relative;margin-top:40px;display:grid;gap:12px;width:82%}
    .node{display:flex;align-items:center;gap:11px;padding:12px 14px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:12px;font-size:14px;transition:.2s}
    .node:hover{background:rgba(185,167,255,.16);transform:translateX(4px)}
    .node b{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:rgba(185,167,255,.24);color:#eeeaff;font-size:11px}
    .node:nth-child(2){margin-left:34px}.node:nth-child(3){margin-left:15px}.node:nth-child(4){margin-left:56px}
    .map-note{position:absolute;right:25px;bottom:37px;width:165px;color:rgba(255,255,255,.75);font-size:13px;line-height:1.55}
    .trust-bar{position:relative;margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding-top:20px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .trust-item{color:rgba(255,255,255,.65);font-size:13px}.trust-item strong{display:block;color:#fff;font-size:15px;font-weight:700}
    main{overflow:hidden}
    .section{padding:108px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:38px}
    .section-kicker{color:var(--purple);font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
    h2{font-size:clamp(29px,3.5vw,43px);letter-spacing:-.045em;line-height:1.22;margin:6px 0 0}
    .section-intro{max-width:430px;color:var(--muted);font-size:15px;margin:0}
    .tool-browser{display:grid;grid-template-columns:275px 1fr;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);overflow:hidden;box-shadow:var(--shadow-soft)}
    .tool-index{padding:20px;border-right:1px solid var(--line);background:#eeeae2}
    .tool-index small{display:block;color:var(--muted);margin:2px 8px 12px}
    .category-tab{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;border:0;background:transparent;padding:13px 12px;border-radius:10px;color:var(--ink-2);font-weight:650;transition:.2s}
    .category-tab span{font-size:12px;color:var(--muted)}
    .category-tab:hover,.category-tab.active{background:var(--ink);color:#fff}.category-tab.active span{color:#d6ceff}
    .tool-stage{padding:28px}
    .tool-stage-top{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:22px}
    .tool-stage-top h3{font-size:25px;line-height:1.35;margin-bottom:4px}.tool-stage-top p{color:var(--muted);font-size:14px;margin:0}
    .text-link{color:var(--purple);font-weight:750;font-size:14px}.text-link:hover{color:var(--coral)}
    .featured-tool{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;border:1px solid #d9d0ff;border-radius:16px;background:#f4f1ff;padding:23px;margin-bottom:15px}
    .featured-tool h3{font-size:23px;margin:13px 0 8px}.featured-tool p{font-size:14px;color:#554f62;margin-bottom:14px}
    .tags{display:flex;gap:7px;flex-wrap:wrap}.tag{font-size:12px;padding:4px 9px;border:1px solid #d8d0fa;border-radius:100px;color:#4d3eba;background:#fff}
    .output-box{align-self:stretch;background:#fff;border-radius:12px;border:1px solid #ddd6f9;padding:14px;font-size:13px;color:var(--muted)}
    .output-box strong{display:block;color:var(--ink-2);font-size:14px;margin-bottom:9px}.output-line{height:8px;border-radius:4px;background:#e6e1fa;margin-top:9px}.output-line.short{width:64%}.output-line.mid{width:82%}
    .compact-tools{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .compact-tool{padding:17px;border:1px solid var(--line);border-radius:13px;transition:.2s;background:#fff}
    .compact-tool:hover{border-color:var(--lavender);box-shadow:var(--shadow-soft);transform:translateY(-3px)}
    .compact-tool strong{display:block;font-size:16px;margin-bottom:5px}.compact-tool p{font-size:13px;color:var(--muted);margin:0 0 9px}
    .scenario-section{background:#eae6df}
    .scenario-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:58px;align-items:start}
    .scenario-intro{position:sticky;top:20px}.scenario-intro p{color:var(--muted);margin:18px 0 23px}
    .scene-list{display:grid;gap:15px}
    .scene{background:var(--white);border:1px solid var(--line);border-radius:16px;padding:22px;display:grid;grid-template-columns:50px 1fr auto;align-items:center;gap:17px;transition:.2s}
    .scene:hover{transform:translateX(4px);border-color:#cfc5f8}
    .scene-num{font-size:14px;color:var(--coral);font-weight:800}
    .scene h3{font-size:19px;margin:0 0 3px}.scene p{font-size:14px;color:var(--muted);margin:0}
    .scene-tools{font-size:12px;color:var(--purple);font-weight:700;text-align:right}
    .chooser{background:var(--ink);color:#fff;border-radius:25px;padding:40px;position:relative;overflow:hidden}
    .chooser:after{content:"";position:absolute;width:320px;height:320px;border:1px solid rgba(185,167,255,.18);border-radius:50%;right:-170px;top:-185px}
    .chooser-top{display:flex;justify-content:space-between;gap:20px;align-items:end;position:relative}.chooser h2{max-width:630px}.chooser p{color:rgba(255,255,255,.65);max-width:370px;font-size:14px;margin:0}
    .choice-grid{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:29px}
    .choice{border:1px solid rgba(255,255,255,.17);border-radius:14px;padding:18px;background:rgba(255,255,255,.05)}
    .choice strong{display:block;font-size:16px;margin-bottom:9px}.choice span{color:#d5cff1;font-size:13px;line-height:1.55;display:block}.choice em{display:block;font-size:12px;color:var(--lavender);font-style:normal;margin-top:15px}
    .process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .step{padding:25px 24px 27px;border-right:1px solid var(--line);min-height:185px}.step:last-child{border-right:0}
    .step-no{display:inline-flex;width:28px;height:28px;align-items:center;justify-content:center;border-radius:50%;background:#e8e3ff;color:var(--purple);font-size:12px;font-weight:800;margin-bottom:16px}
    .step h3{font-size:18px;margin:0 0 7px}.step p{font-size:14px;color:var(--muted);margin:0}
    .info-band{padding:0 0 108px}
    .info-card{display:grid;grid-template-columns:1fr 1.3fr;border-radius:20px;border:1px solid var(--line);background:var(--white);overflow:hidden}
    .info-title{padding:33px;background:#f0ecff}.info-title h2{font-size:30px}.info-title p{color:var(--muted);font-size:14px;margin:14px 0 0}
    .check-list{list-style:none;padding:25px 33px;margin:0;display:grid;gap:15px}.check-list li{position:relative;padding-left:28px;font-size:15px}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:900}
    .faq-wrap{max-width:900px;margin:0 auto}.faq-head{text-align:center;margin-bottom:30px}.faq-head p{color:var(--muted);margin:13px auto 0;max-width:590px}
    .faq-item{border-bottom:1px solid var(--line)}.faq-q{width:100%;border:0;background:transparent;padding:21px 0;text-align:left;display:flex;justify-content:space-between;align-items:center;gap:20px;color:var(--ink-2);font-size:17px;font-weight:700}
    .faq-q b{font-size:24px;line-height:1;color:var(--purple);font-weight:400;transition:.2s}.faq-q[aria-expanded="true"] b{transform:rotate(45deg);color:var(--coral)}
    .faq-a{display:none;color:var(--muted);font-size:15px;padding:0 42px 22px 0}.faq-a.open{display:block}
    .final-cta{padding:0 0 108px}.cta-box{background:var(--coral);color:#fff;border-radius:24px;padding:43px 50px;display:flex;justify-content:space-between;gap:28px;align-items:center}.cta-box .section-kicker{color:#ffe1d9}.cta-box h2{max-width:680px;margin-top:8px}.cta-box .btn{background:#fff;color:#c64b32;white-space:nowrap}.cta-box .btn:hover{box-shadow:0 8px 20px rgba(97,31,18,.2);transform:translateY(-2px)}
    footer{background:var(--ink);color:#fff;padding:58px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:34px;padding-bottom:42px}.footer-brand p{color:rgba(255,255,255,.63);font-size:14px;max-width:285px;margin:15px 0 0}.footer-title{font-size:13px;letter-spacing:.06em;color:#c9c1e9;margin-bottom:11px}.footer-links{display:grid;gap:8px}.footer-links a{color:rgba(255,255,255,.68);font-size:14px;transition:.2s}.footer-links a:hover{color:#fff;transform:translateX(2px)}.footer-bottom{border-top:1px solid rgba(255,255,255,.13);padding-top:18px;display:flex;justify-content:space-between;gap:16px;color:rgba(255,255,255,.48);font-size:12px}
    @media(max-width:1024px){.hero-grid{gap:30px}.featured-tool{grid-template-columns:1fr}.scenario-layout{gap:35px}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}.footer-grid>div:last-child{grid-column:2}.choice-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:768px){
      .container{width:min(calc(100% - 40px),var(--container))}.nav-wrap{height:70px}.brand{min-width:0;font-size:14px}.brand-mark{width:27px;height:27px}.main-nav,.nav-action{display:none}.menu-toggle{display:block}
      .site-header.menu-open{background:var(--ink)}.site-header.menu-open .main-nav{position:absolute;top:70px;left:0;width:100%;display:flex;flex-direction:column;align-items:stretch;padding:16px 20px 21px;background:var(--ink);border-top:1px solid rgba(255,255,255,.12)}.site-header.menu-open .main-nav a{padding:12px}.site-header.menu-open .nav-action{display:inline-flex;position:absolute;top:183px;left:20px;right:20px}.site-header.menu-open .main-nav{padding-bottom:77px}
      .hero{padding:121px 0 51px}.hero-grid{grid-template-columns:1fr}.hero-copy{font-size:16px}.map-card{min-height:334px}.trust-bar{grid-template-columns:1fr 1fr;margin-top:37px}
      .section{padding:75px 0}.section-head{display:block;margin-bottom:27px}.section-intro{margin-top:14px}.tool-browser{grid-template-columns:1fr}.tool-index{border-right:0;border-bottom:1px solid var(--line);display:flex;overflow:auto;padding:12px;gap:7px}.tool-index small{display:none}.category-tab{width:auto;white-space:nowrap;padding:9px 12px}.category-tab span{display:none}.tool-stage{padding:20px}.compact-tools{grid-template-columns:1fr}
      .scenario-layout{grid-template-columns:1fr}.scenario-intro{position:static}.scene{grid-template-columns:37px 1fr}.scene-tools{grid-column:2;text-align:left;margin-top:3px}.chooser{padding:28px 22px}.chooser-top{display:block}.chooser-top p{margin-top:14px}.choice-grid{grid-template-columns:1fr}.process-grid{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.step{border-bottom:1px solid var(--line)}.step:nth-child(3),.step:nth-child(4){border-bottom:0}.info-card{grid-template-columns:1fr}.info-title{padding:26px}.check-list{padding:24px}.cta-box{padding:32px 25px;display:block}.cta-box .btn{margin-top:21px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-grid>div:last-child{grid-column:auto}
    }
    @media(max-width:520px){h1{font-size:39px}.hero-actions,.hero-actions .btn{width:100%}.map-lines{width:94%;margin-top:30px}.node:nth-child(2),.node:nth-child(3),.node:nth-child(4){margin-left:0}.map-note{display:none}.trust-item strong{font-size:13px}.featured-tool{padding:18px}.process-grid{grid-template-columns:1fr}.step,.step:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}.faq-q{font-size:16px}.faq-a{padding-right:10px}.scene{padding:18px}.choice-grid{margin-top:22px}}

/* roulang page: category1 */
:root{
      --ink:#151321;
      --ink-2:#211e2b;
      --purple:#5b4bdb;
      --lavender:#b9a7ff;
      --coral:#ff6b4a;
      --paper:#f5f2ec;
      --white:#fffdfa;
      --line:#e4dfd6;
      --muted:#686272;
      --green:#3daa82;
      --shadow:0 16px 42px rgba(31,25,49,.09);
      --shadow-soft:0 8px 24px rgba(31,25,49,.06);
      --radius:20px;
      --radius-sm:13px;
      --container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;background:var(--paper);color:var(--ink-2);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
      font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{
      outline:3px solid rgba(255,107,74,.52);outline-offset:3px
    }
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{
      position:absolute;z-index:20;top:0;left:0;width:100%;
      border-bottom:1px solid rgba(255,255,255,.12)
    }
    .nav-wrap{height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;color:#fff;min-width:250px;font-weight:750;letter-spacing:-.03em}
    .brand-mark{width:31px;height:31px;position:relative;display:inline-grid;place-items:center;border:1px solid rgba(255,255,255,.72);border-radius:50%;flex:0 0 auto}
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;border-radius:50%;border:1px solid var(--lavender)}
    .brand-mark:before{width:19px;height:7px;transform:rotate(-26deg)}
    .brand-mark:after{width:6px;height:6px;background:var(--coral);border:0;right:2px;top:4px}
    .main-nav{display:flex;align-items:center;gap:9px}
    .main-nav a{padding:8px 13px;border-radius:9px;color:rgba(255,255,255,.77);font-size:14px;transition:.2s ease}
    .main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(255,255,255,.1)}
    .nav-action,.btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;
      border-radius:10px;font-weight:700;transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
    }
    .nav-action{padding:10px 16px;background:var(--coral);color:#fff;font-size:14px}
    .nav-action:hover,.btn-primary:hover{background:#ee5939;box-shadow:0 8px 20px rgba(255,107,74,.28);transform:translateY(-2px)}
    .nav-action:active,.btn:active{transform:translateY(1px) scale(.98)}
    .menu-toggle{display:none;background:none;border:0;color:#fff;padding:8px}
    .menu-toggle span{display:block;width:24px;height:2px;background:currentColor;margin:5px 0;border-radius:2px}

    .page-hero{
      background:var(--ink);color:#fff;padding:145px 0 76px;position:relative;overflow:hidden;
    }
    .page-hero:before,.page-hero:after{
      content:"";position:absolute;border:1px solid rgba(185,167,255,.16);border-radius:50%;pointer-events:none
    }
    .page-hero:before{width:560px;height:560px;right:-190px;top:-250px}
    .page-hero:after{width:300px;height:300px;left:-170px;bottom:-210px;border-color:rgba(255,107,74,.2)}
    .hero-inner{position:relative;z-index:1;max-width:850px}
    .eyebrow{display:inline-flex;gap:8px;align-items:center;color:#d7ceff;font-size:13px;font-weight:800;letter-spacing:.06em}
    .eyebrow i{width:8px;height:8px;background:var(--coral);border-radius:50%;display:inline-block}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(40px,5vw,62px);line-height:1.12;letter-spacing:-.055em;margin:18px 0 20px;max-width:800px}
    h2{font-size:clamp(30px,4vw,42px);line-height:1.22;letter-spacing:-.04em;margin-bottom:14px}
    h3{font-size:21px;line-height:1.35;margin-bottom:9px}
    .hero-copy{max-width:740px;color:rgba(255,255,255,.72);font-size:17px;line-height:1.85;margin-bottom:25px}
    .breadcrumb{display:flex;gap:10px;align-items:center;color:rgba(255,255,255,.58);font-size:13px;margin-top:31px}
    .breadcrumb a:hover{color:#fff}
    .hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
    .hero-point{border:1px solid rgba(255,255,255,.17);background:rgba(255,255,255,.06);border-radius:100px;padding:7px 13px;color:rgba(255,255,255,.75);font-size:13px}
    .btn{padding:13px 19px;font-size:15px}
    .btn-primary{background:var(--coral);color:#fff}
    .btn-secondary{color:#fff;border:1px solid rgba(255,255,255,.3);background:transparent}
    .btn-secondary:hover{background:rgba(255,255,255,.1);transform:translateY(-2px)}
    .section{padding:102px 0}
    .section-soft{background:#ebe7df}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:35px}
    .section-kicker{color:var(--purple);font-size:13px;font-weight:800;letter-spacing:.08em}
    .section-intro{max-width:470px;color:var(--muted);font-size:15px;margin:0}
    .category-index{
      display:flex;gap:10px;overflow-x:auto;padding:6px 2px 13px;margin-bottom:38px;
      scrollbar-width:thin
    }
    .index-link{
      flex:0 0 auto;padding:11px 17px;border:1px solid var(--line);background:var(--white);
      border-radius:100px;color:var(--muted);font-size:14px;font-weight:700;transition:.2s ease
    }
    .index-link:hover,.index-link.active{background:var(--purple);border-color:var(--purple);color:#fff;transform:translateY(-2px)}
    .browser-layout{display:grid;grid-template-columns:275px 1fr;gap:18px;align-items:start}
    .filter-panel{
      background:var(--ink);color:#fff;border-radius:var(--radius);padding:25px;position:sticky;top:20px
    }
    .filter-panel h3{font-size:20px;margin-bottom:5px}
    .filter-panel p{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:23px}
    .filter-group{border-top:1px solid rgba(255,255,255,.14);padding-top:18px;margin-top:18px}
    .filter-label{font-size:13px;color:var(--lavender);font-weight:800;margin-bottom:10px}
    .filter-buttons{display:flex;flex-wrap:wrap;gap:7px}
    .filter-btn{
      border:1px solid rgba(255,255,255,.18);background:transparent;color:rgba(255,255,255,.74);
      border-radius:8px;padding:7px 10px;font-size:12px;transition:.2s ease
    }
    .filter-btn:hover,.filter-btn.active{background:var(--coral);border-color:var(--coral);color:#fff}
    .tool-content{min-width:0}
    .featured-tool{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;border:1px solid #d9d0ff;
      border-radius:var(--radius);background:#f1eeff;padding:28px;margin-bottom:18px;box-shadow:var(--shadow-soft)
    }
    .tool-number{color:var(--purple);font-size:13px;font-weight:900;letter-spacing:.08em}
    .featured-tool h3{font-size:29px;margin:11px 0 10px}
    .featured-tool p{color:#554f62;font-size:14px;margin-bottom:17px}
    .tags{display:flex;gap:7px;flex-wrap:wrap}
    .tag{font-size:12px;padding:4px 9px;border:1px solid #d8d0fa;border-radius:100px;color:#4d3eba;background:#fff}
    .tool-specs{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-content:center}
    .spec{background:rgba(255,255,255,.7);border:1px solid rgba(91,75,219,.12);border-radius:12px;padding:13px}
    .spec small{display:block;color:var(--muted);font-size:12px;margin-bottom:3px}
    .spec strong{font-size:14px}
    .tool-list{display:grid;gap:12px}
    .tool-row{
      display:grid;grid-template-columns:55px 1fr auto;gap:15px;align-items:center;
      padding:19px 21px;background:var(--white);border:1px solid var(--line);border-radius:15px;
      transition:.2s ease
    }
    .tool-row:hover{border-color:#c5baff;box-shadow:var(--shadow-soft);transform:translateY(-3px)}
    .tool-row[hidden]{display:none}
    .row-index{font-size:22px;font-weight:800;color:#c2b9ab}
    .tool-row h3{font-size:18px;margin:0 0 4px}
    .tool-row p{font-size:13px;color:var(--muted);margin:0}
    .row-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:7px}
    .mini-tag{font-size:11px;color:var(--purple);background:#f0edff;border-radius:6px;padding:2px 7px}
    .text-link{color:var(--purple);font-weight:750;font-size:14px;white-space:nowrap}
    .text-link:hover{color:var(--coral)}
    .empty-state{display:none;text-align:center;padding:42px 20px;border:1px dashed #c9c2b8;border-radius:15px;color:var(--muted);background:rgba(255,255,255,.45)}
    .empty-state.show{display:block}
    .guide-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:18px}
    .info-card{border-radius:var(--radius);border:1px solid var(--line);background:var(--white);overflow:hidden}
    .info-title{padding:32px;background:#f0ecff}
    .info-title h2{font-size:29px}
    .info-title p{color:var(--muted);font-size:14px;margin:13px 0 0}
    .check-list{list-style:none;padding:27px 31px;margin:0;display:grid;gap:16px}
    .check-list li{position:relative;padding-left:28px;font-size:15px}
    .check-list li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:900}
    .note-card{padding:31px;background:var(--ink);color:#fff;border-radius:var(--radius);min-height:100%}
    .note-card .section-kicker{color:var(--lavender)}
    .note-card h3{font-size:25px;margin:14px 0}
    .note-card p{color:rgba(255,255,255,.67);font-size:14px}
    .note-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:14px}
    .note-list li{display:flex;gap:11px;color:rgba(255,255,255,.82);font-size:14px}
    .note-list b{color:var(--coral)}
    .process-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .process-step{padding:29px 22px;border-right:1px solid var(--line)}
    .process-step:last-child{border-right:0}
    .step-no{color:var(--coral);font-size:13px;font-weight:900;letter-spacing:.08em}
    .process-step h3{margin:12px 0 7px}
    .process-step p{color:var(--muted);font-size:14px;margin:0}
    .faq-wrap{max-width:900px;margin:0 auto}
    .faq-head{text-align:center;margin-bottom:30px}
    .faq-head p{color:var(--muted);margin:13px auto 0;max-width:600px}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-q{
      width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;
      padding:20px 0;background:none;border:0;text-align:left;color:var(--ink-2);font-weight:750;font-size:17px
    }
    .faq-icon{width:25px;height:25px;border:1px solid #cfc7bb;border-radius:50%;display:grid;place-items:center;color:var(--purple);font-weight:500;transition:.2s ease;flex:0 0 auto}
    .faq-answer{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;transition:max-height .3s ease,padding .3s ease}
    .faq-item.open .faq-answer{max-height:180px;padding:0 45px 20px 0}
    .faq-item.open .faq-icon{background:var(--purple);border-color:var(--purple);color:#fff;transform:rotate(45deg)}
    .cta-section{padding:78px 0;background:var(--ink);color:#fff}
    .cta-box{display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta-box h2{max-width:650px;margin-bottom:10px}
    .cta-box p{color:rgba(255,255,255,.67);margin:0;max-width:620px}
    .cta-actions{display:flex;gap:10px;flex-wrap:wrap;flex:0 0 auto}
    footer{background:var(--ink);color:#fff;border-top:1px solid rgba(255,255,255,.12);padding:63px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px}
    .footer-brand .brand{margin-bottom:16px}
    .footer-brand p{color:rgba(255,255,255,.58);font-size:13px;max-width:280px}
    .footer-title{font-size:14px;font-weight:800;margin-bottom:14px;color:#fff}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:rgba(255,255,255,.58);font-size:13px;transition:.2s ease}
    .footer-links a:hover{color:var(--lavender);padding-left:3px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);margin-top:43px;padding-top:19px;color:rgba(255,255,255,.42);font-size:12px}
    @media(max-width:1024px){
      .browser-layout{grid-template-columns:235px 1fr}
      .guide-grid{grid-template-columns:1fr 1fr}
      .process-step{padding:24px 16px}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 40px),var(--container))}
      .site-header{position:absolute}
      .nav-wrap{height:72px}
      .brand{min-width:0;font-size:14px}
      .brand-mark{width:28px;height:28px}
      .menu-toggle{display:block}
      .main-nav{
        display:none;position:absolute;top:72px;left:20px;right:20px;padding:13px;
        background:var(--ink-2);border:1px solid rgba(255,255,255,.15);border-radius:14px;
        flex-direction:column;align-items:stretch;box-shadow:var(--shadow)
      }
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .nav-action{display:none}
      .page-hero{padding:122px 0 58px}
      h1{font-size:42px}
      .section{padding:76px 0}
      .section-head{display:block;margin-bottom:27px}
      .section-intro{margin-top:12px}
      .browser-layout,.guide-grid{grid-template-columns:1fr}
      .filter-panel{position:static}
      .featured-tool{grid-template-columns:1fr}
      .tool-row{grid-template-columns:40px 1fr}
      .tool-row .text-link{grid-column:2}
      .process-grid{grid-template-columns:1fr 1fr}
      .process-step:nth-child(2){border-right:0}
      .process-step:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .cta-box{display:block}
      .cta-actions{margin-top:25px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:6px}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 40px)}
      .brand{font-size:13px}
      h1{font-size:35px}
      .hero-copy{font-size:15px}
      .hero-actions .btn{width:100%}
      .tool-specs{grid-template-columns:1fr}
      .tool-row{padding:17px 15px;gap:11px}
      .tool-row h3{font-size:16px}
      .process-grid{display:block}
      .process-step{border-right:0;border-bottom:1px solid var(--line)!important}
      .process-step:last-child{border-bottom:0!important}
      .footer-grid{grid-template-columns:1fr}
    }

/* 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}