/* roulang page: index */
:root{
      --bg:#07111f;--bg-deep:#040b15;--panel:#0c1b2dcc;--panel-solid:#0d1d30;
      --panel-light:#122a42;--line:rgba(162,205,234,.18);--line-bright:rgba(90,226,240,.55);
      --text:#edf7ff;--muted:#a5b9cb;--dim:#71879d;--cyan:#5be8f0;--cyan-2:#15b9d1;
      --blue:#5685ff;--violet:#806bff;--amber:#e6b269;--green:#54d9ae;--danger:#ff806f;
      --radius:20px;--radius-sm:13px;--shadow:0 22px 60px rgba(0,0,0,.27);
      --container:1240px;--ease:all .25s cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8;overflow-x:hidden}
    body:before{content:"";position:fixed;inset:0;z-index:-2;background:
      radial-gradient(circle at 82% 8%,rgba(42,101,180,.18),transparent 27rem),
      radial-gradient(circle at 11% 38%,rgba(16,161,177,.10),transparent 25rem),
      linear-gradient(180deg,#081523 0%,#07111f 52%,#040b15 100%)}
    body:after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.16;background-image:linear-gradient(rgba(173,221,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(173,221,255,.06) 1px,transparent 1px);background-size:52px 52px;mask-image:linear-gradient(#000,transparent 80%)}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    ::selection{background:rgba(91,232,240,.3);color:#fff}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .skip{position:absolute;left:-999px;top:0;padding:10px 15px;background:var(--cyan);color:#03111b;z-index:99;border-radius:0 0 10px 0;font-weight:800}
    .skip:focus{left:0}
    .site-header{position:sticky;top:0;z-index:40;border-bottom:1px solid rgba(177,218,246,.12);background:rgba(5,13,24,.74);backdrop-filter:blur(18px)}
    .nav{height:76px;display:flex;align-items:center;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;flex:none;font-size:22px;font-weight:850;letter-spacing:.04em}
    .brand-mark{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;color:#001820;background:linear-gradient(135deg,var(--cyan),var(--blue));box-shadow:0 0 22px rgba(91,232,240,.35);font-weight:900}
    .brand small{display:block;font-size:9px;line-height:1;letter-spacing:.19em;color:var(--muted);font-weight:700;margin-top:-2px}
    .nav-links{display:flex;align-items:center;justify-content:center;gap:2px;flex:1}
    .nav-links a{position:relative;padding:9px 10px;border-radius:9px;color:var(--muted);font-size:14px;white-space:nowrap;transition:var(--ease)}
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:rgba(105,166,218,.1)}
    .nav-links a.active:after{content:"";position:absolute;height:2px;border-radius:3px;background:var(--cyan);bottom:2px;left:12px;right:12px;box-shadow:0 0 9px var(--cyan)}
    .nav-tools{display:flex;gap:9px;align-items:center}
    .search{width:188px;height:40px;border:1px solid var(--line);border-radius:11px;display:flex;align-items:center;gap:8px;padding:0 10px;color:var(--dim);background:rgba(20,43,64,.45);transition:var(--ease)}
    .search:focus-within{border-color:var(--line-bright);box-shadow:0 0 0 3px rgba(91,232,240,.12)}
    .search input{width:100%;min-width:0;color:var(--text);border:0;outline:0;background:transparent;font-size:13px}
    .search input::placeholder{color:#8298aa}.key{font-size:10px;padding:0 4px;border:1px solid var(--line);border-radius:4px;color:var(--dim)}
    .icon-btn,.menu-btn{height:40px;width:40px;display:grid;place-items:center;border:1px solid var(--line);border-radius:11px;background:rgba(20,43,64,.45);color:var(--text);transition:var(--ease)}
    .icon-btn:hover,.menu-btn:hover{border-color:var(--line-bright);color:var(--cyan);transform:translateY(-1px)}
    .menu-btn{display:none}
    .btn{display:inline-flex;min-height:46px;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border:1px solid transparent;border-radius:12px;font-weight:760;font-size:15px;transition:var(--ease)}
    .btn-primary{color:#021620;background:linear-gradient(105deg,var(--cyan),#66b7ed);box-shadow:0 7px 25px rgba(52,214,230,.25)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 11px 29px rgba(52,214,230,.4);filter:brightness(1.06)}
    .btn-secondary{border-color:var(--line);background:rgba(14,37,57,.52);color:#dff5ff}
    .btn-secondary:hover{border-color:var(--line-bright);background:rgba(28,63,89,.6);transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(91,232,240,.45);outline-offset:3px}
    .nav-cta{min-height:40px;padding:7px 13px;font-size:13px}
    .hero{position:relative;min-height:735px;padding:72px 0 46px;display:flex;align-items:center;isolation:isolate;overflow:hidden}
    .hero-bg{position:absolute;inset:0;z-index:-2;background:linear-gradient(90deg,#07111f 6%,rgba(7,17,31,.76) 48%,rgba(5,15,27,.28)),url('/assets/images/backpic/back-1.webp') center/cover}
    .hero:after{content:"";position:absolute;z-index:-1;inset:auto 0 0;height:210px;background:linear-gradient(transparent,var(--bg))}
    .hero-grid{display:grid;grid-template-columns:1.03fr .97fr;gap:48px;align-items:center;width:100%}
    .eyebrow,.section-kicker{display:flex;align-items:center;gap:9px;color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.14em}
    .eyebrow:before,.section-kicker:before{content:"";width:26px;height:1px;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
    h1,h2,h3,p{margin-top:0}h1{max-width:720px;margin:15px 0 18px;font-size:clamp(40px,5.1vw,74px);letter-spacing:-.065em;line-height:1.12;font-weight:900}
    h1 span{color:var(--cyan);text-shadow:0 0 28px rgba(91,232,240,.24)}
    .hero-copy>p{max-width:645px;font-size:17px;color:#c1d2df;line-height:2;margin-bottom:26px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px}
    .hero-points{display:flex;gap:24px;border-top:1px solid var(--line);padding-top:18px;max-width:620px}
    .hero-points div{min-width:105px}.hero-points strong{font-size:18px;color:var(--cyan);display:block;line-height:1.2}.hero-points span{font-size:12px;color:var(--muted)}
    .coupon-wall{position:relative;height:485px}
    .coupon{position:absolute;overflow:hidden;border:1px solid rgba(175,230,249,.3);background:linear-gradient(135deg,rgba(21,54,79,.94),rgba(10,24,44,.94));box-shadow:var(--shadow);border-radius:18px}
    .coupon:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 88% 15%,rgba(91,232,240,.26),transparent 24%),linear-gradient(120deg,transparent 45%,rgba(255,255,255,.06));pointer-events:none}
    .coupon-mini{width:222px;height:142px;padding:17px;opacity:.83}.coupon-mini .coupon-num{font-size:30px}
    .coupon-a{left:18px;top:45px;transform:rotate(-7deg)}.coupon-b{right:18px;top:34px;transform:rotate(8deg)}.coupon-c{right:10px;bottom:45px;transform:rotate(-5deg)}
    .coupon-main{left:50%;top:49%;width:min(330px,74%);height:267px;padding:26px;transform:translate(-50%,-50%);border-color:rgba(111,240,249,.65);background:linear-gradient(135deg,#17476c,#101f4d 56%,#312a64);box-shadow:0 20px 60px rgba(4,10,25,.65),0 0 34px rgba(91,232,240,.28)}
    .coupon-label{position:relative;z-index:1;font-size:11px;letter-spacing:.13em;color:#bcf9fb}.coupon-main h2{position:relative;z-index:1;margin:13px 0 4px;font-size:32px;line-height:1.16;letter-spacing:-.05em}.coupon-main p{position:relative;z-index:1;color:#c6dbe8;font-size:13px;line-height:1.65;margin:0}
    .coupon-num{position:absolute;right:18px;bottom:10px;font-size:45px;line-height:1;font-weight:900;color:rgba(139,225,248,.14);letter-spacing:-.08em}.coupon-mini h3{position:relative;z-index:1;margin:9px 0 0;font-size:15px}.coupon-mini p{position:relative;z-index:1;margin:4px 0;color:var(--muted);font-size:11px;line-height:1.5}
    .coupon-cut{position:absolute;right:-8px;top:50%;width:17px;height:17px;background:var(--bg);border-radius:50%;box-shadow:0 37px 0 var(--bg),0 -37px 0 var(--bg)}
    .hero-progress{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);width:min(var(--container),calc(100% - 48px));display:flex;align-items:center;gap:12px;color:var(--dim);font-size:11px;letter-spacing:.09em}.hero-progress i{height:1px;flex:1;background:linear-gradient(90deg,var(--cyan) 0 24%,var(--line) 24% 100%)}
    section{padding:110px 0;position:relative}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:38px}.section-head h2{font-size:clamp(28px,3.4vw,47px);letter-spacing:-.055em;line-height:1.18;margin:11px 0 0}.section-head p{max-width:500px;margin:0;color:var(--muted);font-size:15px}
    .case-section{padding-top:90px}.case-layout{display:grid;grid-template-columns:.76fr 1.24fr;gap:24px}.problem-intro{padding:29px;border-radius:var(--radius);border:1px solid var(--line);background:linear-gradient(145deg,rgba(19,47,70,.72),rgba(7,19,34,.88));min-height:410px;display:flex;flex-direction:column;justify-content:space-between}
    .problem-intro h2{font-size:37px;line-height:1.25;letter-spacing:-.05em;margin:15px 0}.problem-intro p{color:var(--muted);font-size:15px}.line-note{padding-top:15px;border-top:1px solid var(--line);font-size:12px;color:var(--amber)}
    .case-stack{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.case-card{position:relative;min-height:195px;overflow:hidden;padding:23px;border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);transition:var(--ease)}
    .case-card:nth-child(3){grid-column:span 2;min-height:170px}.case-card:hover{transform:translateY(-4px);border-color:var(--line-bright);box-shadow:0 18px 35px rgba(0,0,0,.2),0 0 22px rgba(91,232,240,.1)}
    .case-no{font-size:11px;letter-spacing:.13em;color:var(--amber)}.case-card h3{font-size:20px;margin:12px 0 8px;line-height:1.35}.case-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.72;max-width:430px}.impact{display:inline-block;margin-top:13px;border:1px solid rgba(91,232,240,.22);border-radius:20px;padding:3px 9px;font-size:11px;color:#9eeff4;background:rgba(91,232,240,.06)}
    .results{background:linear-gradient(180deg,rgba(17,45,69,.34),rgba(7,17,31,0))}.result-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}.result-main{position:relative;min-height:440px;overflow:hidden;border-radius:24px;border:1px solid var(--line);background:#10243a}.result-main img{width:100%;height:100%;object-fit:cover;opacity:.46}.result-main:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,15,27,.86),rgba(5,15,27,.17)),linear-gradient(0deg,rgba(5,15,27,.65),transparent 55%)}
    .result-copy{position:absolute;z-index:1;left:31px;right:30px;bottom:25px}.result-copy h3{font-size:31px;line-height:1.2;letter-spacing:-.045em;margin:10px 0}.result-copy p{max-width:590px;margin:0;color:#c0d5e2;font-size:14px}.result-tag{color:var(--cyan);font-size:11px;font-weight:800;letter-spacing:.12em}
    .result-side{display:grid;gap:17px}.metric{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(12,31,49,.74);display:flex;flex-direction:column;justify-content:center;transition:var(--ease)}.metric:hover{border-color:rgba(91,232,240,.48);background:rgba(15,42,62,.9)}.metric b{font-size:36px;line-height:1.1;letter-spacing:-.06em;color:var(--cyan)}.metric h3{margin:8px 0 2px;font-size:17px}.metric p{margin:0;color:var(--muted);font-size:12px;line-height:1.65}
    .compare-layout{display:grid;grid-template-columns:.83fr 1.17fr;gap:48px;align-items:start}.compare-copy{position:sticky;top:105px}.compare-copy h2{font-size:43px;line-height:1.2;letter-spacing:-.06em;margin:12px 0 17px}.compare-copy p{color:var(--muted);font-size:15px}.compare-table{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:rgba(10,26,42,.58)}.compare-row{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:14px;padding:17px 21px;border-bottom:1px solid var(--line);font-size:14px}.compare-row:last-child{border:0}.compare-row.head{background:rgba(68,121,158,.16);color:#d9f7fb;font-size:12px;font-weight:800}.compare-row span:nth-child(2){color:#879bad}.compare-row span:nth-child(3){color:#8bf0e8}.compare-row strong{font-weight:700}
    .solution{padding-top:88px}.solution-layout{display:grid;grid-template-columns:.62fr 1.38fr;gap:22px}.steps-nav{border-left:1px solid var(--line);padding-left:23px}.step-link{display:block;padding:14px 10px 16px 19px;position:relative;color:var(--muted);transition:var(--ease)}.step-link:before{content:"";position:absolute;width:9px;height:9px;border-radius:50%;background:#27475e;left:-28px;top:22px}.step-link.active,.step-link:hover{color:var(--text);background:rgba(66,122,159,.1);border-radius:0 11px 11px 0}.step-link.active:before{background:var(--cyan);box-shadow:0 0 12px var(--cyan)}.step-link b{display:block;font-size:15px}.step-link small{font-size:12px;color:var(--dim)}
    .solution-panels{display:grid;gap:15px}.solution-panel{display:grid;grid-template-columns:92px 1fr auto;gap:20px;align-items:center;padding:24px;border:1px solid var(--line);border-radius:17px;background:rgba(12,31,49,.68);transition:var(--ease)}.solution-panel:hover{border-color:var(--line-bright);transform:translateX(3px)}.module-no{color:var(--amber);font-size:12px;letter-spacing:.13em}.solution-panel h3{margin:0 0 5px;font-size:21px}.solution-panel p{color:var(--muted);font-size:13px;line-height:1.7;margin:0}.text-link{color:var(--cyan);font-size:13px;font-weight:750;white-space:nowrap}.text-link:hover{text-decoration:underline}
    .partners{padding:72px 0;background:rgba(8,23,38,.53);border-top:1px solid rgba(162,205,234,.08);border-bottom:1px solid rgba(162,205,234,.08)}.partner-intro{display:grid;grid-template-columns:.78fr 1.22fr;gap:35px;align-items:center}.partner-intro h2{font-size:35px;line-height:1.26;letter-spacing:-.05em;margin:10px 0}.partner-intro p{color:var(--muted);font-size:14px}.tags{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.tag-card{padding:15px;border:1px solid var(--line);border-radius:13px;background:rgba(15,39,59,.6);transition:var(--ease)}.tag-card:hover{border-color:var(--line-bright);background:rgba(17,51,72,.86)}.tag-card b{display:block;color:#dffaff;font-size:14px}.tag-card span{display:block;margin-top:4px;color:var(--dim);font-size:11px;line-height:1.55}
    .testimonials{padding-bottom:92px}.quote-wrap{display:grid;grid-template-columns:1.14fr .86fr;gap:22px}.quote-main{padding:42px;min-height:332px;border-radius:24px;border:1px solid rgba(91,232,240,.3);background:linear-gradient(140deg,rgba(23,63,86,.77),rgba(16,26,62,.84));position:relative;overflow:hidden}.quote-main:before{content:"“";position:absolute;right:23px;top:-17px;font-size:156px;color:rgba(135,232,244,.1);font-family:serif}.quote-main blockquote{position:relative;margin:16px 0 27px;font-size:25px;line-height:1.65;letter-spacing:-.03em}.quote-main p{position:relative;color:#bcd3df;font-size:14px;max-width:640px}.quote-role{display:flex;align-items:center;gap:11px;margin-top:25px;color:var(--muted);font-size:12px}.avatar{width:37px;height:37px;display:grid;place-items:center;border-radius:50%;background:rgba(91,232,240,.15);border:1px solid rgba(91,232,240,.36);color:var(--cyan);font-weight:800}
    .quote-list{display:grid;gap:10px}.mini-quote{padding:17px 18px;border-radius:14px;border:1px solid var(--line);background:rgba(12,30,47,.63);transition:var(--ease)}.mini-quote:hover{border-color:var(--line-bright);transform:translateX(-3px)}.mini-quote p{font-size:13px;color:#c8d9e4;line-height:1.72;margin:0 0 7px}.mini-quote span{font-size:11px;color:var(--amber)}
    .brand-story{padding-top:85px}.story-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:35px;align-items:center}.story-image{min-height:410px;position:relative;overflow:hidden;border-radius:22px;border:1px solid var(--line)}.story-image img{width:100%;height:100%;object-fit:cover;opacity:.67}.story-image:after{content:"开云 · 信息清晰，行动有序";position:absolute;left:20px;bottom:18px;padding:7px 11px;background:rgba(4,15,27,.72);border:1px solid var(--line);border-radius:8px;color:#d7faff;font-size:12px;backdrop-filter:blur(7px)}.story-copy h2{font-size:41px;line-height:1.2;letter-spacing:-.055em;margin:12px 0 19px}.story-copy p{color:var(--muted);font-size:15px;margin-bottom:16px}.story-list{margin:23px 0 0;padding:0;list-style:none}.story-list li{padding:10px 0 10px 24px;border-bottom:1px solid var(--line);color:#c7dce7;font-size:14px;position:relative}.story-list li:before{content:"";width:8px;height:8px;position:absolute;left:2px;top:19px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(91,232,240,.5)}
    .news{background:linear-gradient(180deg,rgba(14,35,55,.52),rgba(5,13,23,0))}.news-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:30px}.news-list{border-top:1px solid var(--line)}.news-item{display:grid;grid-template-columns:89px 1fr auto;align-items:center;gap:18px;padding:21px 4px;border-bottom:1px solid var(--line);transition:var(--ease)}.news-item:hover{padding-left:12px;background:rgba(56,112,151,.08)}.news-date{font-size:12px;color:var(--amber);line-height:1.45}.news-item h3{font-size:17px;margin:0 0 6px}.news-item p{font-size:13px;line-height:1.75;color:var(--muted);margin:0}.news-arrow{color:var(--cyan);font-size:20px}.news-feature{position:relative;min-height:470px;overflow:hidden;border-radius:20px;border:1px solid var(--line)}.news-feature img{position:absolute;width:100%;height:100%;object-fit:cover;opacity:.43}.news-feature:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(5,16,27,.96),rgba(5,16,27,.08))}.feature-copy{position:absolute;z-index:1;left:23px;right:23px;bottom:22px}.feature-copy h3{font-size:25px;line-height:1.28;margin:10px 0}.feature-copy p{font-size:13px;color:#c0d4e0;margin:0}.feature-copy span{font-size:11px;color:var(--cyan);letter-spacing:.1em}
    .faq{padding-bottom:88px}.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:50px}.faq-aside h2{font-size:39px;line-height:1.2;letter-spacing:-.055em;margin:10px 0 18px}.faq-aside p{color:var(--muted);font-size:14px}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;padding:19px 3px;display:flex;justify-content:space-between;align-items:center;gap:20px;border:0;background:transparent;color:var(--text);font-weight:750;text-align:left;font-size:16px}.faq-question i{font-style:normal;color:var(--cyan);font-size:22px;transition:var(--ease)}.faq-answer{display:none;padding:0 30px 20px 3px;color:var(--muted);font-size:14px;line-height:1.9}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-question i{transform:rotate(45deg)}
    .cta-section{padding-top:65px;padding-bottom:112px}.cta-panel{position:relative;overflow:hidden;border:1px solid rgba(91,232,240,.38);border-radius:26px;padding:48px;display:grid;grid-template-columns:1fr .9fr;gap:40px;background:linear-gradient(120deg,rgba(23,70,94,.9),rgba(35,29,82,.92));box-shadow:0 22px 60px rgba(0,0,0,.25),0 0 42px rgba(51,178,217,.13)}.cta-panel:before{content:"";position:absolute;width:350px;height:350px;border-radius:50%;right:-130px;top:-180px;background:rgba(91,232,240,.16);filter:blur(10px)}.cta-copy{position:relative;z-index:1}.cta-copy h2{font-size:40px;line-height:1.2;letter-spacing:-.06em;margin:12px 0 16px}.cta-copy p{max-width:550px;color:#c3ddea;font-size:15px}.cta-tips{padding:0;margin:23px 0 0;list-style:none}.cta-tips li{margin:8px 0;color:#d7eef4;font-size:13px}.cta-tips li:before{content:"✓";color:var(--cyan);font-weight:900;margin-right:9px}
    .form{position:relative;z-index:1;padding:20px;border-radius:17px;background:rgba(4,17,31,.38);border:1px solid rgba(220,248,255,.17)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{display:flex;flex-direction:column;gap:5px}.field.full{grid-column:span 2}.field label{font-size:12px;color:#c5dbe6}.field input,.field select,.field textarea{width:100%;border:1px solid rgba(169,210,237,.23);border-radius:10px;background:rgba(7,23,39,.78);color:var(--text);padding:10px 11px;outline:0;font-size:13px;transition:var(--ease)}.field textarea{height:71px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(91,232,240,.12)}.field input.error{border-color:var(--danger)}.error-msg{display:none;color:#ff9c91;font-size:11px}.form-status{min-height:20px;margin:9px 0 0;color:#a8c3d1;font-size:12px}.form-status.success{color:#86f1cb}.form .btn{width:100%;margin-top:12px}
    .search-status{display:none;position:fixed;z-index:60;top:88px;right:max(24px,calc((100vw - var(--container))/2));width:290px;padding:17px;border:1px solid var(--line-bright);border-radius:14px;background:#0b1e31;box-shadow:var(--shadow);color:var(--muted);font-size:13px}.search-status b{display:block;color:var(--text);margin-bottom:4px}.search-status button{border:0;background:transparent;color:var(--cyan);padding:0;margin-top:7px}
    .footer{padding:48px 0 24px;border-top:1px solid var(--line);background:#040b15}.footer-top{display:grid;grid-template-columns:1.25fr repeat(3,.65fr);gap:30px;padding-bottom:32px}.footer p{color:var(--dim);font-size:13px;max-width:350px;margin:14px 0}.footer h3{font-size:13px;letter-spacing:.08em;color:#cce4f1;margin:0 0 12px}.footer-links{display:grid;gap:6px}.footer-links a{color:var(--dim);font-size:13px;transition:var(--ease)}.footer-links a:hover{color:var(--cyan);padding-left:3px}.footer-bottom{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:18px;align-items:center;color:#62788d;font-size:12px;flex-wrap:wrap}.footer-records{display:flex;gap:12px;flex-wrap:wrap}.footer-records a:hover{color:var(--cyan)}
    .mobile-drawer{display:none}
    @media(max-width:1120px){.nav-links{gap:0}.nav-links a{padding:8px 7px;font-size:13px}.search{width:150px}.hero-grid{gap:25px}.case-layout,.compare-layout,.solution-layout,.partner-intro,.faq-layout{gap:25px}}
    @media(max-width:960px){.nav-links,.search,.icon-btn{display:none}.nav{justify-content:space-between}.nav-tools{margin-left:auto}.menu-btn{display:grid}.hero{min-height:auto;padding:65px 0 92px}.hero-grid,.case-layout,.result-grid,.compare-layout,.solution-layout,.partner-intro,.quote-wrap,.story-grid,.news-layout,.faq-layout,.cta-panel{grid-template-columns:1fr}.coupon-wall{height:390px;max-width:590px;width:100%;margin:5px auto 0}.compare-copy{position:static}.steps-nav{display:grid;grid-template-columns:repeat(4,1fr);border-left:0;border-bottom:1px solid var(--line);padding:0}.step-link{padding:8px 8px 15px}.step-link:before{left:11px;bottom:-5px;top:auto}.step-link b{font-size:13px}.step-link small{display:none}.quote-main{min-height:0}.story-image{min-height:330px}.footer-top{grid-template-columns:1.3fr 1fr 1fr}.footer-top>div:last-child{display:none}.mobile-drawer{position:fixed;z-index:45;inset:76px 0 0;padding:26px 24px;background:rgba(4,12,22,.98);backdrop-filter:blur(20px);transform:translateX(100%);transition:transform .3s ease}.mobile-drawer.open{display:block;transform:translateX(0)}.mobile-drawer a{display:block;padding:15px 0;border-bottom:1px solid var(--line);font-size:20px;color:#d9eaf3}.mobile-drawer .btn{margin-top:25px;width:100%}}
    @media(max-width:640px){.container{width:min(calc(100% - 30px),var(--container))}.nav{height:68px}.site-header{top:0}.hero{padding-top:50px}.hero-grid{gap:24px}h1{font-size:39px}.hero-copy>p{font-size:15px}.hero-points{gap:12px;justify-content:space-between}.hero-points div{min-width:0}.hero-points strong{font-size:15px}.coupon-wall{height:340px}.coupon-mini{width:160px;height:107px;padding:12px}.coupon-mini .coupon-num{font-size:29px}.coupon-mini h3{font-size:12px}.coupon-mini p{font-size:9px}.coupon-a{left:0;top:30px}.coupon-b{right:0;top:24px}.coupon-c{right:2px;bottom:20px}.coupon-main{height:220px;padding:20px}.coupon-main h2{font-size:26px}.hero-progress{bottom:22px}.section-head{display:block;margin-bottom:27px}.section-head p{margin-top:15px}.case-stack{grid-template-columns:1fr}.case-card:nth-child(3){grid-column:auto}.problem-intro h2,.compare-copy h2,.story-copy h2,.faq-aside h2,.cta-copy h2{font-size:33px}.result-main{min-height:350px}.result-copy{left:20px;right:20px;bottom:18px}.result-copy h3{font-size:25px}.metric{min-height:145px}.compare-row{grid-template-columns:.85fr 1fr 1fr;padding:14px 12px;gap:8px;font-size:12px}.steps-nav{overflow:auto}.step-link{min-width:130px}.solution-panel{grid-template-columns:1fr;gap:8px;padding:20px}.solution-panel .text-link{margin-top:5px}.tags{grid-template-columns:repeat(2,1fr)}.quote-main{padding:27px}.quote-main blockquote{font-size:20px}.news-item{grid-template-columns:58px 1fr;gap:10px}.news-arrow{display:none}.news-item h3{font-size:15px}.news-item p{font-size:12px}.news-feature{min-height:350px}.cta-panel{padding:27px 20px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-top{grid-template-columns:1fr 1fr;gap:24px}.footer-top>div:first-child{grid-column:span 2}.footer-bottom{display:block}.footer-records{margin-top:10px}.nav-cta{display:none}section{padding:72px 0}.partners{padding:58px 0}.cta-section{padding-top:38px;padding-bottom:75px}}

/* roulang page: category1 */
:root{
      --bg:#07111f;
      --bg-deep:#040b15;
      --panel:#0c1b2dcc;
      --panel-solid:#0d1d30;
      --panel-light:#122a42;
      --line:rgba(162,205,234,.18);
      --line-bright:rgba(90,226,240,.55);
      --text:#edf7ff;
      --muted:#a5b9cb;
      --dim:#71879d;
      --cyan:#5be8f0;
      --cyan-2:#15b9d1;
      --blue:#5685ff;
      --violet:#806bff;
      --amber:#e6b269;
      --green:#54d9ae;
      --danger:#ff806f;
      --radius:20px;
      --radius-sm:13px;
      --shadow:0 22px 60px rgba(0,0,0,.27);
      --container:1240px;
      --ease:all .25s cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--bg);
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.8;
      overflow-x:hidden
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      z-index:-2;
      background:
        radial-gradient(circle at 82% 8%,rgba(42,101,180,.18),transparent 27rem),
        radial-gradient(circle at 11% 38%,rgba(16,161,177,.10),transparent 25rem),
        linear-gradient(180deg,#081523 0%,#07111f 52%,#040b15 100%)
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      z-index:-1;
      pointer-events:none;
      opacity:.16;
      background-image:
        linear-gradient(rgba(173,221,255,.08) 1px,transparent 1px),
        linear-gradient(90deg,rgba(173,221,255,.06) 1px,transparent 1px);
      background-size:52px 52px;
      mask-image:linear-gradient(#000,transparent 80%)
    }
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:40;
      border-bottom:1px solid rgba(177,218,246,.12);
      background:rgba(5,13,24,.74);
      backdrop-filter:blur(18px)
    }
    .nav{height:76px;display:flex;align-items:center;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;flex:none;font-size:22px;font-weight:850;letter-spacing:.04em}
    .brand-mark{
      width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
      color:#001820;background:linear-gradient(135deg,var(--cyan),var(--blue));
      box-shadow:0 0 22px rgba(91,232,240,.35);font-weight:900
    }
    .brand small{display:block;font-size:9px;line-height:1;letter-spacing:.19em;color:var(--muted);font-weight:700;margin-top:-2px}
    .nav-links{display:flex;align-items:center;justify-content:center;gap:2px;flex:1}
    .nav-links a{
      position:relative;padding:9px 10px;border-radius:9px;color:var(--muted);
      font-size:14px;white-space:nowrap;transition:var(--ease)
    }
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:rgba(105,166,218,.1)}
    .nav-links a.active:after{
      content:"";position:absolute;height:2px;border-radius:3px;background:var(--cyan);
      bottom:2px;left:12px;right:12px;box-shadow:0 0 9px var(--cyan)
    }
    .nav-tools{display:flex;gap:9px;align-items:center}
    .search{
      width:188px;height:40px;border:1px solid var(--line);border-radius:11px;
      display:flex;align-items:center;gap:8px;padding:0 10px;color:var(--dim);
      background:rgba(20,43,64,.45);transition:var(--ease)
    }
    .search:focus-within{border-color:var(--line-bright);box-shadow:0 0 0 3px rgba(91,232,240,.12)}
    .search input{width:100%;min-width:0;color:var(--text);border:0;outline:0;background:transparent;font-size:13px}
    .search input::placeholder{color:#8298aa}
    .key{font-size:10px;color:var(--dim);white-space:nowrap}
    .icon-btn,.menu-btn{
      height:40px;width:40px;display:grid;place-items:center;border:1px solid var(--line);
      border-radius:11px;background:rgba(20,43,64,.45);color:var(--text);transition:var(--ease)
    }
    .icon-btn:hover,.menu-btn:hover{border-color:var(--line-bright);color:var(--cyan);transform:translateY(-1px)}
    .menu-btn{display:none}
    .btn{
      display:inline-flex;min-height:46px;align-items:center;justify-content:center;gap:8px;
      padding:10px 18px;border:1px solid transparent;border-radius:12px;font-weight:760;
      font-size:15px;transition:var(--ease)
    }
    .btn-primary{
      color:#021620;background:linear-gradient(105deg,var(--cyan),#66b7ed);
      box-shadow:0 7px 25px rgba(52,214,230,.25)
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 11px 29px rgba(52,214,230,.4);filter:brightness(1.06)}
    .btn-secondary{border-color:var(--line);background:rgba(14,37,57,.52);color:#dff5ff}
    .btn-secondary:hover{border-color:var(--line-bright);background:rgba(28,63,89,.6);transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(91,232,240,.45);outline-offset:3px
    }
    .nav-cta{min-height:40px;padding:7px 13px;font-size:13px}
    .page-hero{
      position:relative;
      padding:84px 0 68px;
      overflow:hidden;
      border-bottom:1px solid rgba(162,205,234,.1)
    }
    .page-hero:before{
      content:"";
      position:absolute;
      width:580px;height:580px;
      right:-160px;top:-230px;
      border:1px solid rgba(91,232,240,.16);
      border-radius:50%;
      box-shadow:0 0 0 40px rgba(91,232,240,.025),0 0 0 90px rgba(86,133,255,.025)
    }
    .page-hero-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:72px;align-items:center}
    .breadcrumb{display:flex;gap:10px;align-items:center;color:var(--dim);font-size:13px;margin-bottom:24px}
    .breadcrumb span{color:var(--cyan)}
    .eyebrow,.section-kicker{
      display:flex;align-items:center;gap:9px;color:var(--cyan);
      font-size:12px;font-weight:800;letter-spacing:.14em
    }
    .eyebrow:before,.section-kicker:before{
      content:"";width:26px;height:1px;background:var(--cyan);box-shadow:0 0 8px var(--cyan)
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      font-size:clamp(38px,5vw,70px);line-height:1.13;letter-spacing:-.055em;
      margin:18px 0 22px;max-width:650px
    }
    h2{font-size:clamp(28px,3.4vw,46px);line-height:1.2;letter-spacing:-.04em;margin:12px 0 18px}
    h3{font-size:20px;line-height:1.35;margin-bottom:10px}
    .hero-intro{max-width:610px;color:#c1d2df;font-size:17px;line-height:2;margin-bottom:28px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-note{display:flex;gap:18px;margin-top:30px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
    .hero-note strong{display:block;color:var(--cyan);font-size:20px;line-height:1.2}
    .ability-visual{
      min-height:410px;position:relative;border:1px solid var(--line);
      border-radius:26px;background:linear-gradient(145deg,rgba(16,48,76,.82),rgba(8,22,42,.68));
      box-shadow:var(--shadow);overflow:hidden;padding:26px
    }
    .ability-visual:before{
      content:"";position:absolute;inset:0;
      background:linear-gradient(135deg,rgba(4,12,25,.12),rgba(4,12,25,.72)),url('/assets/images/backpic/back-2.webp') center/cover;
      opacity:.58
    }
    .visual-top,.visual-bottom,.ability-map{position:relative;z-index:1}
    .visual-top{display:flex;justify-content:space-between;align-items:center;color:#cfeaf5;font-size:12px}
    .visual-top b{color:var(--amber);font-size:11px;letter-spacing:.12em}
    .ability-map{margin:50px auto 42px;width:min(370px,90%);height:168px;position:relative}
    .map-core{
      position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
      width:150px;height:86px;border:1px solid var(--line-bright);border-radius:18px;
      display:grid;place-items:center;text-align:center;
      background:rgba(24,83,111,.72);box-shadow:0 0 34px rgba(91,232,240,.25)
    }
    .map-core strong{font-size:22px;display:block}
    .map-core small{color:#b4dce8;font-size:11px}
    .map-node{
      position:absolute;padding:8px 12px;border:1px solid var(--line);border-radius:9px;
      background:rgba(7,20,36,.86);font-size:12px;color:#d5ebf5
    }
    .node-a{left:0;top:5px}.node-b{right:0;top:5px}.node-c{left:0;bottom:5px}.node-d{right:0;bottom:5px}
    .map-line{position:absolute;background:var(--line-bright);height:1px;width:90px;top:50%}
    .line-left{left:73px}.line-right{right:73px}
    .visual-bottom{display:flex;gap:10px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:18px}
    .micro-tag{padding:5px 9px;border:1px solid rgba(91,232,240,.24);border-radius:7px;color:#b9e8ef;font-size:11px;background:rgba(13,44,64,.42)}
    .section{padding:112px 0}
    .section-head{display:flex;justify-content:space-between;gap:32px;align-items:end;margin-bottom:42px}
    .section-head p{max-width:570px;color:var(--muted);margin-bottom:3px}
    .index-strip{
      display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);margin-bottom:104px
    }
    .index-item{padding:22px 20px;border-right:1px solid var(--line);transition:var(--ease)}
    .index-item:last-child{border-right:0}
    .index-item:hover{background:rgba(26,65,94,.28)}
    .index-item b{display:block;color:var(--amber);font-size:12px;letter-spacing:.12em;margin-bottom:8px}
    .index-item strong{font-size:17px;display:block;margin-bottom:5px}
    .index-item span{display:block;color:var(--muted);font-size:13px;line-height:1.65}
    .capability-layout{display:grid;grid-template-columns:280px 1fr;gap:40px;align-items:start}
    .side-caption{position:sticky;top:106px;padding:24px;border-left:2px solid var(--cyan);background:rgba(9,27,45,.42)}
    .side-caption b{color:var(--amber);font-size:12px;letter-spacing:.15em}
    .side-caption h3{font-size:25px;margin:16px 0 12px}
    .side-caption p{color:var(--muted);font-size:14px;line-height:1.9;margin-bottom:20px}
    .side-caption a{color:var(--cyan);font-size:13px}
    .capability-stack{display:grid;gap:16px}
    .capability-card{
      position:relative;display:grid;grid-template-columns:86px 1fr 170px;gap:24px;
      align-items:center;padding:28px;border:1px solid var(--line);border-radius:var(--radius);
      background:linear-gradient(110deg,rgba(15,38,60,.86),rgba(10,25,43,.72));
      transition:var(--ease);overflow:hidden
    }
    .capability-card:after{
      content:"";position:absolute;width:180px;height:180px;right:-80px;top:-100px;
      border-radius:50%;background:rgba(91,232,240,.08);filter:blur(3px)
    }
    .capability-card:hover{transform:translateX(5px);border-color:var(--line-bright);box-shadow:0 14px 35px rgba(0,0,0,.22),0 0 20px rgba(91,232,240,.08)}
    .card-number{font-size:36px;font-weight:800;color:rgba(91,232,240,.68);letter-spacing:-.08em}
    .capability-card p{color:var(--muted);font-size:14px;line-height:1.85;margin:0}
    .card-meta{position:relative;z-index:1;border-left:1px solid var(--line);padding-left:18px;color:var(--dim);font-size:12px}
    .card-meta strong{display:block;color:#dceef7;font-size:14px;margin-bottom:6px}
    .module-section{background:rgba(4,12,23,.34);border-top:1px solid rgba(162,205,234,.08);border-bottom:1px solid rgba(162,205,234,.08)}
    .module-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:stretch}
    .module-image{position:relative;min-height:470px;border-radius:24px;overflow:hidden;border:1px solid var(--line)}
    .module-image img{width:100%;height:100%;object-fit:cover;filter:saturate(.78) contrast(1.05)}
    .module-image:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(3,10,20,.85))}
    .image-caption{position:absolute;z-index:1;left:24px;right:24px;bottom:22px;display:flex;justify-content:space-between;gap:15px;align-items:end}
    .image-caption strong{font-size:21px}.image-caption span{color:#b7d0de;font-size:12px}
    .module-copy{display:flex;flex-direction:column;justify-content:center}
    .module-copy>p{color:var(--muted);line-height:1.95}
    .module-list{margin:24px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}
    .module-list li{display:flex;gap:18px;padding:17px 0;border-bottom:1px solid var(--line)}
    .module-list b{color:var(--cyan);font-size:13px;min-width:40px}.module-list span{color:#c7d9e4;font-size:14px}
    .split-section{display:grid;grid-template-columns:.75fr 1.25fr;gap:54px;align-items:start}
    .quote-panel{padding:30px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(140deg,rgba(21,59,82,.72),rgba(11,25,47,.76));position:relative}
    .quote-panel:before{content:"“";position:absolute;right:22px;top:-20px;color:rgba(91,232,240,.35);font-size:110px;line-height:1}
    .quote-panel p{font-size:20px;line-height:1.8;color:#e4f3f8;margin-bottom:24px}
    .quote-panel footer{color:var(--muted);font-size:13px;border-top:1px solid var(--line);padding-top:15px}
    .ability-table{border:1px solid var(--line);border-radius:22px;overflow:hidden;background:rgba(10,26,44,.55)}
    .ability-row{display:grid;grid-template-columns:1fr 1.1fr .8fr;gap:20px;padding:19px 22px;border-bottom:1px solid var(--line);align-items:center}
    .ability-row:last-child{border-bottom:0}
    .ability-row:first-child{background:rgba(78,137,180,.13);color:var(--cyan);font-size:12px;font-weight:800}
    .ability-row:not(:first-child){color:var(--muted);font-size:14px}
    .ability-row strong{color:var(--text);font-size:15px}
    .status{display:inline-flex;width:max-content;padding:3px 8px;border-radius:6px;color:#a9f0d6;background:rgba(84,217,174,.1);font-size:11px}
    .brand-story{padding:42px 0 0;max-width:820px}
    .brand-story p{color:var(--muted);font-size:16px;line-height:2.05}
    .brand-story p:first-of-type{color:#d6e7f0;font-size:18px}
    .faq-wrap{max-width:900px;margin:0 auto}
    .faq-item{border-top:1px solid var(--line)}
    .faq-item:last-child{border-bottom:1px solid var(--line)}
    .faq-question{
      width:100%;display:flex;justify-content:space-between;align-items:center;gap:20px;
      padding:21px 4px;background:none;border:0;color:var(--text);text-align:left;font-weight:750
    }
    .faq-question span:last-child{color:var(--cyan);font-size:24px;font-weight:400;transition:var(--ease)}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .faq-answer{display:none;color:var(--muted);font-size:14px;line-height:1.9;padding:0 42px 22px 4px}
    .faq-item.open .faq-answer{display:block}
    .cta{
      padding:64px;border:1px solid rgba(91,232,240,.32);border-radius:28px;
      background:radial-gradient(circle at 84% 18%,rgba(128,107,255,.28),transparent 26rem),linear-gradient(120deg,#102d4b,#0a1a34 58%,#132052);
      box-shadow:0 0 45px rgba(38,144,191,.12)
    }
    .cta-grid{display:grid;grid-template-columns:1fr .9fr;gap:50px;align-items:center}
    .cta h2{max-width:570px}.cta p{color:#c2d8e5;max-width:590px}
    .consult-form{display:grid;gap:12px}
    .field{display:grid;gap:6px}
    .field label{font-size:12px;color:#c6dce8}
    .field input,.field select,.field textarea{
      width:100%;border:1px solid var(--line);border-radius:11px;background:rgba(3,15,29,.5);
      color:var(--text);padding:11px 13px;outline:0;transition:var(--ease)
    }
    .field textarea{min-height:85px;resize:vertical}
    .field input::placeholder,.field textarea::placeholder{color:#71889b}
    .field input:hover,.field select:hover,.field textarea:hover{border-color:rgba(162,205,234,.38)}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(91,232,240,.12)}
    .field.error input,.field.error select,.field.error textarea{border-color:var(--danger)}
    .error-text{display:none;color:#ff9b8e;font-size:12px}
    .field.error .error-text{display:block}
    .form-status{min-height:24px;font-size:13px;color:var(--green)}
    .form-status.error{color:#ff9b8e}
    .search-state{
      display:none;position:fixed;z-index:60;top:88px;right:24px;width:330px;padding:20px;
      border:1px solid var(--line-bright);border-radius:16px;background:#0a1b2ceb;
      box-shadow:var(--shadow);color:var(--muted);font-size:13px
    }
    .search-state.show{display:block}
    .search-state strong{display:block;color:var(--text);margin-bottom:7px}
    .search-state button{margin-top:12px;border:0;background:none;color:var(--cyan);padding:0}
    .quick-modal{
      display:none;position:fixed;inset:0;z-index:70;background:rgba(2,8,17,.76);
      align-items:center;justify-content:center;padding:24px
    }
    .quick-modal.show{display:flex}
    .modal-card{width:min(520px,100%);padding:32px;border:1px solid var(--line-bright);border-radius:22px;background:var(--panel-solid);box-shadow:var(--shadow)}
    .modal-card p{color:var(--muted);line-height:1.9}.modal-close{float:right;border:0;background:none;color:var(--muted);font-size:24px}
    .footer{padding:64px 0 24px;background:rgba(3,10,19,.72);border-top:1px solid rgba(162,205,234,.1)}
    .footer-top{display:grid;grid-template-columns:1.5fr .8fr .8fr .8fr;gap:36px;padding-bottom:48px}
    .footer .brand{margin-bottom:18px}.footer p{max-width:380px;color:var(--muted);font-size:13px;line-height:1.9}
    .footer h3{font-size:14px;color:#dcecf4;margin:4px 0 14px}
    .footer-links{display:grid;gap:8px}.footer-links a{color:var(--muted);font-size:13px;transition:var(--ease)}
    .footer-links a:hover{color:var(--cyan);transform:translateX(2px)}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid var(--line);color:var(--dim);font-size:12px}
    .footer-records{display:flex;gap:16px;flex-wrap:wrap}.footer-records a:hover{color:var(--cyan)}
    @media(max-width:1100px){
      .nav{gap:12px}.nav-links a{padding:8px 7px;font-size:13px}.search{width:156px}
      .page-hero-grid{gap:42px}.capability-layout{grid-template-columns:220px 1fr}
    }
    @media(max-width:900px){
      .nav-links{display:none;position:absolute;top:76px;left:0;right:0;padding:16px 24px 24px;background:rgba(5,13,24,.97);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:13px 14px}.nav-tools{margin-left:auto}.menu-btn{display:grid}.nav-cta{display:none}
      .page-hero-grid,.module-layout,.cta-grid{grid-template-columns:1fr}
      .page-hero{padding:60px 0}.ability-visual{min-height:360px}
      .section{padding:82px 0}.split-section{grid-template-columns:1fr;gap:30px}
      .side-caption{position:static}.capability-layout{grid-template-columns:1fr}
      .footer-top{grid-template-columns:1.3fr 1fr 1fr}
      .footer-top>div:last-child{grid-column:2}
    }
    @media(max-width:640px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .nav{height:68px}.site-header .nav-links{top:68px}.brand{font-size:19px}.brand-mark{width:30px;height:30px}
      .search{width:40px;padding:0;justify-content:center;border:0;background:transparent}.search input,.key{display:none}
      h1{font-size:42px}.hero-intro{font-size:15px;line-height:1.85}.page-hero{padding:43px 0 52px}
      .ability-visual{min-height:330px;padding:20px}.ability-map{margin:48px auto 40px;transform:scale(.88)}
      .index-strip{grid-template-columns:1fr 1fr;margin-bottom:70px}.index-item{padding:17px 13px}.index-item:nth-child(2){border-right:0}.index-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .section-head{display:block;margin-bottom:28px}.section-head p{margin-top:14px}
      .capability-card{grid-template-columns:50px 1fr;gap:14px;padding:22px}.card-meta{grid-column:2;border-left:0;border-top:1px solid var(--line);padding:12px 0 0}
      .card-number{font-size:28px}.module-image{min-height:300px}.module-copy{padding-top:4px}
      .ability-row{grid-template-columns:1fr 1fr;padding:16px 14px;gap:10px}.ability-row div:last-child{grid-column:2}
      .cta{padding:30px 22px}.footer{padding-top:48px}.footer-top{grid-template-columns:1fr 1fr;gap:28px}.footer-top>div:first-child{grid-column:1/-1}.footer-top>div:last-child{grid-column:auto}
      .footer-bottom{display:block}.footer-records{margin-top:12px;gap:9px 14px}.hero-note{gap:12px;flex-wrap:wrap}
    }
    @media(max-width:420px){
      .breadcrumb{font-size:12px}.hero-actions .btn{width:100%}.index-strip{grid-template-columns:1fr}
      .index-item,.index-item:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.index-item:last-child{border-bottom:0}
      .visual-top{font-size:11px}.map-node{font-size:10px;padding:6px 8px}.line-left{left:58px}.line-right{right:58px}
    }

/* roulang page: category2 */
:root{
      --bg:#07111f;
      --bg-deep:#040b15;
      --panel:#0c1b2dcc;
      --panel-solid:#0d1d30;
      --panel-light:#122a42;
      --line:rgba(162,205,234,.18);
      --line-bright:rgba(90,226,240,.55);
      --text:#edf7ff;
      --muted:#a5b9cb;
      --dim:#71879d;
      --cyan:#5be8f0;
      --cyan-2:#15b9d1;
      --blue:#5685ff;
      --violet:#806bff;
      --amber:#e6b269;
      --green:#54d9ae;
      --danger:#ff806f;
      --radius:20px;
      --radius-sm:13px;
      --shadow:0 22px 60px rgba(0,0,0,.27);
      --container:1240px;
      --ease:all .25s cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--bg);
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.8;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      z-index:-2;
      background:
        radial-gradient(circle at 82% 8%,rgba(42,101,180,.18),transparent 27rem),
        radial-gradient(circle at 11% 38%,rgba(16,161,177,.10),transparent 25rem),
        linear-gradient(180deg,#081523 0%,#07111f 52%,#040b15 100%);
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      z-index:-1;
      pointer-events:none;
      opacity:.14;
      background-image:
        linear-gradient(rgba(173,221,255,.08) 1px,transparent 1px),
        linear-gradient(90deg,rgba(173,221,255,.06) 1px,transparent 1px);
      background-size:52px 52px;
      mask-image:linear-gradient(#000,transparent 82%);
    }
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:40;
      border-bottom:1px solid rgba(177,218,246,.12);
      background:rgba(5,13,24,.78);
      backdrop-filter:blur(18px);
    }
    .nav{
      height:76px;
      display:flex;
      align-items:center;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      flex:none;
      font-size:22px;
      font-weight:850;
      letter-spacing:.04em;
    }
    .brand-mark{
      width:32px;
      height:32px;
      border-radius:10px;
      display:grid;
      place-items:center;
      color:#001820;
      background:linear-gradient(135deg,var(--cyan),var(--blue));
      box-shadow:0 0 22px rgba(91,232,240,.35);
      font-weight:900;
    }
    .brand small{
      display:block;
      font-size:9px;
      line-height:1;
      letter-spacing:.19em;
      color:var(--muted);
      font-weight:700;
      margin-top:-2px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:2px;
      flex:1;
    }
    .nav-links a{
      position:relative;
      padding:9px 10px;
      border-radius:9px;
      color:var(--muted);
      font-size:14px;
      white-space:nowrap;
      transition:var(--ease);
    }
    .nav-links a:hover,.nav-links a.active{
      color:var(--text);
      background:rgba(105,166,218,.1);
    }
    .nav-links a.active:after{
      content:"";
      position:absolute;
      height:2px;
      border-radius:3px;
      background:var(--cyan);
      bottom:2px;
      left:12px;
      right:12px;
      box-shadow:0 0 9px var(--cyan);
    }
    .nav-tools{display:flex;gap:9px;align-items:center}
    .search{
      width:188px;
      height:40px;
      border:1px solid var(--line);
      border-radius:11px;
      display:flex;
      align-items:center;
      gap:8px;
      padding:0 10px;
      color:var(--dim);
      background:rgba(20,43,64,.45);
      transition:var(--ease);
    }
    .search:focus-within{
      border-color:var(--line-bright);
      box-shadow:0 0 0 3px rgba(91,232,240,.12);
    }
    .search input{
      width:100%;
      min-width:0;
      color:var(--text);
      border:0;
      outline:0;
      background:transparent;
      font-size:13px;
    }
    .search input::placeholder{color:#8298aa}
    .key{
      color:var(--dim);
      font-size:10px;
      white-space:nowrap;
      border:1px solid var(--line);
      padding:1px 4px;
      border-radius:4px;
    }
    .icon-btn,.menu-btn{
      height:40px;
      width:40px;
      display:grid;
      place-items:center;
      border:1px solid var(--line);
      border-radius:11px;
      background:rgba(20,43,64,.45);
      color:var(--text);
      transition:var(--ease);
    }
    .icon-btn:hover,.menu-btn:hover{
      border-color:var(--line-bright);
      color:var(--cyan);
      transform:translateY(-1px);
    }
    .menu-btn{display:none}
    .btn{
      display:inline-flex;
      min-height:46px;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:10px 18px;
      border:1px solid transparent;
      border-radius:12px;
      font-weight:760;
      font-size:15px;
      transition:var(--ease);
    }
    .btn-primary{
      color:#021620;
      background:linear-gradient(105deg,var(--cyan),#66b7ed);
      box-shadow:0 7px 25px rgba(52,214,230,.25);
    }
    .btn-primary:hover{
      transform:translateY(-2px);
      box-shadow:0 11px 29px rgba(52,214,230,.4);
      filter:brightness(1.06);
    }
    .btn-secondary{
      border-color:var(--line);
      background:rgba(14,37,57,.52);
      color:#dff5ff;
    }
    .btn-secondary:hover{
      border-color:var(--line-bright);
      background:rgba(28,63,89,.6);
      transform:translateY(-2px);
    }
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(91,232,240,.45);
      outline-offset:3px;
    }
    .nav-cta{min-height:40px;padding:7px 13px;font-size:13px}
    .page-hero{
      position:relative;
      min-height:550px;
      padding:92px 0 74px;
      overflow:hidden;
      border-bottom:1px solid rgba(162,205,234,.1);
    }
    .page-hero:before{
      content:"";
      position:absolute;
      inset:0;
      z-index:-2;
      background:
        linear-gradient(90deg,rgba(7,17,31,.96) 0%,rgba(7,17,31,.82) 42%,rgba(7,17,31,.38) 100%),
        url('/assets/images/backpic/back-2.webp') center/cover;
      opacity:.85;
    }
    .page-hero:after{
      content:"";
      position:absolute;
      z-index:-1;
      left:0;
      right:0;
      bottom:0;
      height:160px;
      background:linear-gradient(transparent,var(--bg));
    }
    .hero-layout{
      display:grid;
      grid-template-columns:minmax(0,1.08fr) minmax(340px,.92fr);
      gap:74px;
      align-items:center;
    }
    .breadcrumb{
      display:flex;
      align-items:center;
      gap:10px;
      color:var(--dim);
      font-size:13px;
      margin-bottom:24px;
    }
    .breadcrumb a:hover{color:var(--cyan)}
    .slash{color:var(--cyan);opacity:.7}
    .eyebrow,.section-kicker{
      display:flex;
      align-items:center;
      gap:9px;
      color:var(--cyan);
      font-size:12px;
      font-weight:800;
      letter-spacing:.14em;
    }
    .eyebrow:before,.section-kicker:before{
      content:"";
      width:26px;
      height:1px;
      background:var(--cyan);
      box-shadow:0 0 8px var(--cyan);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      max-width:720px;
      margin:15px 0 20px;
      font-size:clamp(40px,5.1vw,70px);
      line-height:1.14;
      letter-spacing:-.055em;
    }
    .gradient-text{
      color:var(--cyan);
      text-shadow:0 0 26px rgba(91,232,240,.16);
    }
    .hero-summary{
      max-width:680px;
      color:#c1d2df;
      font-size:17px;
      line-height:2;
      margin-bottom:29px;
    }
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-index{
      position:relative;
      min-height:340px;
      border:1px solid rgba(139,210,244,.25);
      border-radius:24px;
      background:linear-gradient(145deg,rgba(20,52,81,.78),rgba(8,20,38,.82));
      box-shadow:var(--shadow),0 0 32px rgba(65,158,218,.12);
      overflow:hidden;
      padding:24px;
    }
    .hero-index:before{
      content:"";
      position:absolute;
      width:230px;
      height:230px;
      right:-60px;
      top:-70px;
      border-radius:50%;
      background:rgba(91,232,240,.12);
      filter:blur(5px);
    }
    .hero-index-head{
      position:relative;
      display:flex;
      justify-content:space-between;
      align-items:center;
      color:var(--muted);
      font-size:12px;
      letter-spacing:.12em;
      border-bottom:1px solid var(--line);
      padding-bottom:16px;
    }
    .status-dot{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:var(--green);
      letter-spacing:0;
    }
    .status-dot:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--green);
      box-shadow:0 0 12px var(--green);
    }
    .process-orbit{
      position:relative;
      height:244px;
      margin-top:15px;
    }
    .process-orbit:before{
      content:"";
      position:absolute;
      left:11%;
      right:11%;
      top:50%;
      height:1px;
      background:linear-gradient(90deg,transparent,var(--cyan),transparent);
      box-shadow:0 0 15px rgba(91,232,240,.35);
    }
    .orbit-item{
      position:absolute;
      width:92px;
      text-align:center;
      color:var(--muted);
      font-size:12px;
    }
    .orbit-item:nth-child(1){left:0;top:18px}
    .orbit-item:nth-child(2){left:25%;bottom:20px}
    .orbit-item:nth-child(3){right:25%;top:18px}
    .orbit-item:nth-child(4){right:0;bottom:20px}
    .orbit-node{
      width:52px;
      height:52px;
      display:grid;
      place-items:center;
      margin:0 auto 9px;
      border-radius:16px;
      color:var(--cyan);
      border:1px solid rgba(91,232,240,.48);
      background:rgba(10,43,62,.82);
      box-shadow:0 0 22px rgba(91,232,240,.13);
      font-weight:800;
      font-size:18px;
    }
    .orbit-item:nth-child(3) .orbit-node{
      color:#b4a4ff;
      border-color:rgba(128,107,255,.6);
      background:rgba(44,36,91,.58);
    }
    .orbit-item:nth-child(4) .orbit-node{
      color:var(--green);
      border-color:rgba(84,217,174,.55);
      background:rgba(21,73,67,.52);
    }
    .hero-meter{
      position:absolute;
      left:24px;
      right:24px;
      bottom:22px;
    }
    .meter-label{
      display:flex;
      justify-content:space-between;
      color:var(--dim);
      font-size:11px;
      margin-bottom:7px;
    }
    .meter{
      height:5px;
      border-radius:9px;
      background:rgba(160,202,230,.12);
      overflow:hidden;
    }
    .meter span{
      display:block;
      width:74%;
      height:100%;
      border-radius:inherit;
      background:linear-gradient(90deg,var(--cyan-2),var(--violet));
      box-shadow:0 0 12px rgba(91,232,240,.55);
    }
    section{padding:105px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:42px;
    }
    .section-head h2{
      max-width:620px;
      margin:11px 0 0;
      font-size:clamp(29px,4vw,47px);
      line-height:1.23;
      letter-spacing:-.045em;
    }
    .section-head p{
      max-width:430px;
      margin:0;
      color:var(--muted);
      line-height:1.9;
    }
    .chapter-nav{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:1px;
      margin:0 0 54px;
      border:1px solid var(--line);
      background:var(--line);
      border-radius:17px;
      overflow:hidden;
    }
    .chapter-nav a{
      position:relative;
      min-height:88px;
      padding:17px 19px;
      background:rgba(9,26,44,.84);
      transition:var(--ease);
    }
    .chapter-nav a:hover,.chapter-nav a.active{
      background:rgba(23,57,82,.9);
    }
    .chapter-nav a.active:before{
      content:"";
      position:absolute;
      left:0;
      top:0;
      bottom:0;
      width:3px;
      background:var(--cyan);
      box-shadow:0 0 13px var(--cyan);
    }
    .chapter-nav b{
      display:block;
      color:var(--amber);
      font-size:11px;
      letter-spacing:.1em;
      margin-bottom:4px;
    }
    .chapter-nav strong{display:block;font-size:15px}
    .chapter-nav span{display:block;color:var(--dim);font-size:12px;line-height:1.5;margin-top:3px}
    .flow-section{padding-top:0}
    .flow-board{
      display:grid;
      grid-template-columns:270px minmax(0,1fr);
      gap:38px;
      align-items:start;
    }
    .flow-aside{
      position:sticky;
      top:105px;
      padding:23px;
      border-left:1px solid var(--line-bright);
      background:linear-gradient(180deg,rgba(13,39,62,.66),rgba(8,22,39,.24));
    }
    .flow-aside h3{font-size:20px;margin:0 0 12px}
    .flow-aside p{color:var(--muted);font-size:14px;line-height:1.85}
    .aside-note{
      margin-top:30px;
      padding-top:18px;
      border-top:1px solid var(--line);
      color:var(--dim);
      font-size:12px;
    }
    .flow-list{position:relative}
    .flow-list:before{
      content:"";
      position:absolute;
      left:27px;
      top:28px;
      bottom:28px;
      width:1px;
      background:linear-gradient(var(--cyan),rgba(91,232,240,.08));
    }
    .flow-step{
      position:relative;
      display:grid;
      grid-template-columns:56px minmax(0,1fr) 150px;
      gap:23px;
      align-items:start;
      padding:25px 25px 27px 0;
      border-bottom:1px solid var(--line);
    }
    .flow-step:last-child{border-bottom:0}
    .step-no{
      position:relative;
      z-index:1;
      width:56px;
      height:56px;
      display:grid;
      place-items:center;
      border:1px solid rgba(91,232,240,.48);
      border-radius:17px;
      color:var(--cyan);
      background:#0a2034;
      box-shadow:0 0 18px rgba(91,232,240,.12);
      font-size:14px;
      font-weight:800;
    }
    .flow-step h3{font-size:22px;line-height:1.35;margin:1px 0 7px}
    .flow-step p{color:var(--muted);font-size:14px;line-height:1.9;margin-bottom:11px}
    .step-tags{display:flex;gap:7px;flex-wrap:wrap}
    .tag{
      display:inline-flex;
      align-items:center;
      min-height:25px;
      padding:2px 9px;
      color:#b8d2e2;
      border:1px solid var(--line);
      border-radius:99px;
      background:rgba(20,48,71,.45);
      font-size:11px;
    }
    .step-output{
      padding:13px 14px;
      border:1px solid rgba(162,205,234,.14);
      border-radius:12px;
      background:rgba(8,24,41,.58);
    }
    .step-output small{
      display:block;
      color:var(--cyan);
      font-size:10px;
      letter-spacing:.1em;
      margin-bottom:5px;
    }
    .step-output span{display:block;color:#d2e3ec;font-size:13px;line-height:1.65}
    .scenario-section{
      background:linear-gradient(180deg,rgba(4,15,29,.15),rgba(13,35,55,.43),rgba(4,15,29,.12));
      border-top:1px solid rgba(162,205,234,.08);
      border-bottom:1px solid rgba(162,205,234,.08);
    }
    .scenario-layout{
      display:grid;
      grid-template-columns:1.12fr .88fr;
      gap:30px;
      align-items:stretch;
    }
    .scenario-main{
      position:relative;
      min-height:420px;
      border-radius:23px;
      overflow:hidden;
      border:1px solid var(--line);
      background:
        linear-gradient(90deg,rgba(6,20,35,.95),rgba(8,27,46,.38)),
        url('/assets/images/coverpic/cover-4.webp') center/cover;
      padding:34px;
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
    }
    .scenario-main:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(0deg,rgba(5,14,26,.88),transparent 65%);
      pointer-events:none;
    }
    .scenario-main>*{position:relative;z-index:1}
    .scenario-main .tag{width:max-content;margin-bottom:18px;color:var(--cyan);border-color:rgba(91,232,240,.36)}
    .scenario-main h3{font-size:31px;line-height:1.3;max-width:560px;margin-bottom:12px}
    .scenario-main p{max-width:540px;color:#c2d3df;margin:0;font-size:15px}
    .scenario-side{display:flex;flex-direction:column;gap:13px}
    .scenario-card{
      flex:1;
      padding:20px 22px;
      border:1px solid var(--line);
      border-radius:17px;
      background:rgba(12,31,49,.75);
      transition:var(--ease);
    }
    .scenario-card:hover{
      transform:translateX(4px);
      border-color:var(--line-bright);
      box-shadow:0 13px 35px rgba(0,0,0,.2);
    }
    .scenario-card strong{display:block;font-size:17px;margin-bottom:6px}
    .scenario-card p{color:var(--muted);font-size:13px;line-height:1.8;margin:0}
    .result-section{padding-bottom:80px}
    .result-panel{
      display:grid;
      grid-template-columns:1fr .86fr;
      gap:1px;
      border:1px solid var(--line);
      border-radius:22px;
      overflow:hidden;
      background:var(--line);
    }
    .result-copy{
      padding:34px;
      background:linear-gradient(135deg,rgba(17,54,78,.82),rgba(11,28,48,.92));
    }
    .result-copy h3{font-size:30px;line-height:1.35;margin:10px 0 15px}
    .result-copy p{color:var(--muted);line-height:1.95;font-size:15px}
    .result-points{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:15px;
      margin-top:27px;
    }
    .result-point{
      padding-top:15px;
      border-top:1px solid rgba(162,205,234,.2);
    }
    .result-point b{display:block;color:var(--cyan);font-size:27px;line-height:1.2}
    .result-point span{color:var(--muted);font-size:12px}
    .result-image{
      min-height:360px;
      position:relative;
      background:
        linear-gradient(180deg,rgba(10,24,40,.12),rgba(5,14,26,.76)),
        url('/assets/images/coverpic/cover-7.webp') center/cover;
    }
    .image-caption{
      position:absolute;
      left:23px;
      right:23px;
      bottom:21px;
      display:flex;
      justify-content:space-between;
      gap:15px;
      color:#d5e8f2;
      font-size:12px;
      border-top:1px solid rgba(255,255,255,.24);
      padding-top:11px;
    }
    .quote-section{padding-top:25px}
    .quote-layout{
      display:grid;
      grid-template-columns:.42fr 1fr;
      gap:40px;
      align-items:start;
    }
    .quote-intro h2{font-size:38px;line-height:1.3;margin:12px 0 15px}
    .quote-intro p{color:var(--muted);font-size:14px;line-height:1.9}
    .quote-rail{border-top:1px solid var(--line)}
    .quote-item{
      display:grid;
      grid-template-columns:70px 1fr;
      gap:23px;
      padding:25px 0;
      border-bottom:1px solid var(--line);
    }
    .quote-number{color:var(--amber);font-size:13px;letter-spacing:.1em}
    .quote-item blockquote{
      margin:0 0 11px;
      color:#dbeaf2;
      font-size:17px;
      line-height:1.9;
    }
    .quote-item cite{font-style:normal;color:var(--dim);font-size:12px}
    .faq-section{padding-top:65px}
    .faq-layout{
      display:grid;
      grid-template-columns:.72fr 1.28fr;
      gap:65px;
      align-items:start;
    }
    .faq-intro h2{font-size:38px;line-height:1.3;margin:11px 0 15px}
    .faq-intro p{color:var(--muted);line-height:1.9;font-size:14px}
    .faq-list{border-top:1px solid var(--line)}
    details{
      border-bottom:1px solid var(--line);
      padding:2px 0;
    }
    summary{
      position:relative;
      list-style:none;
      cursor:pointer;
      padding:19px 43px 19px 0;
      color:#e5f3fa;
      font-size:16px;
      font-weight:700;
    }
    summary::-webkit-details-marker{display:none}
    summary:after{
      content:"+";
      position:absolute;
      right:5px;
      top:15px;
      color:var(--cyan);
      font-size:24px;
      font-weight:400;
      transition:var(--ease);
    }
    details[open] summary:after{content:"−";transform:rotate(180deg)}
    details p{max-width:720px;color:var(--muted);font-size:14px;line-height:1.9;margin:-2px 40px 21px 0}
    .cta-section{padding:92px 0 114px}
    .cta-box{
      position:relative;
      overflow:hidden;
      display:grid;
      grid-template-columns:1fr .92fr;
      gap:55px;
      padding:45px;
      border:1px solid rgba(91,232,240,.38);
      border-radius:25px;
      background:
        radial-gradient(circle at 78% 22%,rgba(128,107,255,.26),transparent 18rem),
        linear-gradient(125deg,rgba(20,67,93,.92),rgba(27,27,70,.9));
      box-shadow:0 0 42px rgba(49,154,208,.12);
    }
    .cta-box:after{
      content:"";
      position:absolute;
      width:370px;
      height:370px;
      right:-130px;
      bottom:-230px;
      border-radius:50%;
      border:1px solid rgba(91,232,240,.23);
      box-shadow:0 0 0 18px rgba(91,232,240,.04),0 0 0 38px rgba(91,232,240,.025);
    }
    .cta-box h2{position:relative;z-index:1;font-size:39px;line-height:1.3;margin:11px 0 15px}
    .cta-box p{position:relative;z-index:1;color:#c7dce7;max-width:590px;line-height:1.9}
    .cta-form{position:relative;z-index:2;display:grid;gap:12px}
    .field{display:grid;gap:6px}
    .field label{color:#dcecf4;font-size:13px}
    .field input,.field select,.field textarea{
      width:100%;
      border:1px solid rgba(176,218,240,.22);
      border-radius:10px;
      padding:10px 13px;
      color:var(--text);
      background:rgba(4,17,31,.54);
      outline:none;
      transition:var(--ease);
    }
    .field textarea{min-height:76px;resize:vertical}
    .field input::placeholder,.field textarea::placeholder{color:#7d95a6}
    .field input:focus,.field select:focus,.field textarea:focus{
      border-color:var(--cyan);
      box-shadow:0 0 0 3px rgba(91,232,240,.13);
    }
    .field.error input,.field.error select,.field.error textarea{border-color:var(--danger)}
    .error-text{display:none;color:#ffad9f;font-size:11px}
    .field.error .error-text{display:block}
    .form-note{font-size:11px;color:#9db5c6}
    .form-message{
      display:none;
      padding:10px 12px;
      border-radius:9px;
      color:#baf5df;
      background:rgba(53,181,145,.14);
      border:1px solid rgba(84,217,174,.35);
      font-size:13px;
    }
    .form-message.show{display:block}
    .footer{
      padding:54px 0 22px;
      background:rgba(3,11,21,.88);
      border-top:1px solid rgba(162,205,234,.12);
    }
    .footer-top{
      display:grid;
      grid-template-columns:1.45fr .72fr .72fr .72fr;
      gap:42px;
      padding-bottom:42px;
    }
    .footer .brand{margin-bottom:17px}
    .footer p{
      max-width:360px;
      margin:0;
      color:var(--dim);
      font-size:13px;
      line-height:1.9;
    }
    .footer h3{font-size:14px;margin:4px 0 14px;color:#dceaf2}
    .footer-links{display:grid;gap:7px}
    .footer-links a{color:var(--dim);font-size:13px;transition:var(--ease)}
    .footer-links a:hover{color:var(--cyan);transform:translateX(2px)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding-top:19px;
      border-top:1px solid var(--line);
      color:var(--dim);
      font-size:11px;
    }
    .footer-records{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:15px}
    .footer-records a:hover{color:var(--cyan)}
    .search-empty{
      position:fixed;
      top:84px;
      right:24px;
      z-index:50;
      display:none;
      width:310px;
      padding:18px;
      border:1px solid var(--line-bright);
      border-radius:15px;
      background:#0b1d30;
      box-shadow:var(--shadow);
    }
    .search-empty.show{display:block}
    .search-empty strong{display:block;font-size:14px;margin-bottom:5px}
    .search-empty p{color:var(--muted);font-size:12px;margin:0 0 11px}
    .loading-line{
      height:2px;
      width:100%;
      overflow:hidden;
      background:rgba(162,205,234,.12);
      margin-top:13px;
    }
    .loading-line span{
      display:block;
      width:32%;
      height:100%;
      background:var(--cyan);
      animation:load 1.7s ease-in-out infinite;
    }
    @keyframes load{0%{transform:translateX(-120%)}100%{transform:translateX(350%)}}
    @media(max-width:1100px){
      .nav{gap:12px}
      .nav-links a{padding-left:7px;padding-right:7px;font-size:13px}
      .search{width:150px}
      .hero-layout{gap:38px}
      .flow-board{grid-template-columns:220px minmax(0,1fr)}
    }
    @media(max-width:992px){
      .nav-links{display:none}
      .nav-tools{margin-left:auto}
      .menu-btn{display:grid}
      .nav.open .nav-links{
        position:absolute;
        top:76px;
        left:0;
        right:0;
        display:grid;
        gap:5px;
        padding:17px 24px 23px;
        background:rgba(5,14,27,.97);
        border-bottom:1px solid var(--line);
        box-shadow:0 22px 35px rgba(0,0,0,.25);
      }
      .nav.open .nav-links a{padding:12px 15px}
      .hero-layout,.scenario-layout,.result-panel,.cta-box{grid-template-columns:1fr}
      .page-hero{min-height:auto;padding:70px 0 80px}
      .hero-index{max-width:620px}
      .flow-board{grid-template-columns:1fr}
      .flow-aside{position:static}
      .quote-layout,.faq-layout{grid-template-columns:1fr;gap:33px}
      .footer-top{grid-template-columns:1.2fr .8fr .8fr}
      .footer-top>div:first-child{grid-column:1/-1}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 34px),var(--container))}
      .nav{height:68px}
      .nav.open .nav-links{top:68px;padding-left:17px;padding-right:17px}
      .search{width:40px;padding:0;justify-content:center;border:0;background:transparent}
      .search input,.search .key{display:none}
      .search:focus-within{box-shadow:none}
      .nav-cta{display:none}
      .page-hero{padding:58px 0 60px}
      h1{font-size:clamp(37px,10vw,54px)}
      .hero-summary{font-size:15px}
      section{padding:76px 0}
      .section-head{display:block;margin-bottom:29px}
      .section-head p{margin-top:15px}
      .chapter-nav{grid-template-columns:repeat(2,1fr);margin-bottom:35px}
      .flow-step{grid-template-columns:50px 1fr;gap:16px;padding-right:0}
      .step-no{width:50px;height:50px}
      .step-output{grid-column:2}
      .scenario-main{min-height:360px;padding:25px}
      .scenario-main h3{font-size:26px}
      .result-copy{padding:27px}
      .result-copy h3{font-size:27px}
      .result-image{min-height:280px}
      .quote-item{grid-template-columns:48px 1fr;gap:12px}
      .quote-item blockquote{font-size:15px}
      .cta-box{padding:28px 22px;gap:30px}
      .cta-box h2{font-size:30px}
      .footer-top{grid-template-columns:1fr 1fr;gap:28px}
      .footer-top>div:first-child{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-records{justify-content:flex-start;margin-top:11px;gap:8px 14px}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 28px)}
      .brand{font-size:19px}
      .brand-mark{width:29px;height:29px;border-radius:9px}
      .icon-btn{display:none}
      .hero-actions .btn{width:100%}
      .hero-index{min-height:310px;padding:18px}
      .process-orbit{transform:scale(.86);transform-origin:center}
      .hero-meter{left:18px;right:18px}
      .chapter-nav{grid-template-columns:1fr}
      .chapter-nav a{min-height:73px}
      .flow-step{grid-template-columns:42px 1fr;gap:12px}
      .step-no{width:42px;height:42px;border-radius:13px;font-size:12px}
      .flow-list:before{left:20px}
      .flow-step h3{font-size:19px}
      .result-points{grid-template-columns:1fr}
      .quote-intro h2,.faq-intro h2{font-size:31px}
      .footer-top{grid-template-columns:1fr}
      .footer-top>div:first-child{grid-column:auto}
      .search-empty{right:14px;left:14px;width:auto}
    }

/* roulang page: category3 */
:root{
      --bg:#07111f;
      --bg-deep:#040b15;
      --panel:#0c1b2dcc;
      --panel-solid:#0d1d30;
      --panel-light:#122a42;
      --line:rgba(162,205,234,.18);
      --line-bright:rgba(90,226,240,.55);
      --text:#edf7ff;
      --muted:#a5b9cb;
      --dim:#71879d;
      --cyan:#5be8f0;
      --cyan-2:#15b9d1;
      --blue:#5685ff;
      --violet:#806bff;
      --amber:#e6b269;
      --green:#54d9ae;
      --danger:#ff806f;
      --radius:20px;
      --radius-sm:13px;
      --shadow:0 22px 60px rgba(0,0,0,.27);
      --container:1240px;
      --ease:all .25s cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--bg);
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.8;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      z-index:-2;
      background:
        radial-gradient(circle at 82% 8%,rgba(42,101,180,.18),transparent 27rem),
        radial-gradient(circle at 11% 38%,rgba(16,161,177,.10),transparent 25rem),
        linear-gradient(180deg,#081523 0%,#07111f 52%,#040b15 100%);
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      z-index:-1;
      pointer-events:none;
      opacity:.16;
      background-image:
        linear-gradient(rgba(173,221,255,.08) 1px,transparent 1px),
        linear-gradient(90deg,rgba(173,221,255,.06) 1px,transparent 1px);
      background-size:52px 52px;
      mask-image:linear-gradient(#000,transparent 80%);
    }
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:40;
      border-bottom:1px solid rgba(177,218,246,.12);
      background:rgba(5,13,24,.74);
      backdrop-filter:blur(18px);
    }
    .nav{
      height:76px;
      display:flex;
      align-items:center;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      flex:none;
      font-size:22px;
      font-weight:850;
      letter-spacing:.04em;
    }
    .brand-mark{
      width:32px;
      height:32px;
      border-radius:10px;
      display:grid;
      place-items:center;
      color:#001820;
      background:linear-gradient(135deg,var(--cyan),var(--blue));
      box-shadow:0 0 22px rgba(91,232,240,.35);
      font-weight:900;
    }
    .brand small{
      display:block;
      font-size:9px;
      line-height:1;
      letter-spacing:.19em;
      color:var(--muted);
      font-weight:700;
      margin-top:-2px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:2px;
      flex:1;
    }
    .nav-links a{
      position:relative;
      padding:9px 10px;
      border-radius:9px;
      color:var(--muted);
      font-size:14px;
      white-space:nowrap;
      transition:var(--ease);
    }
    .nav-links a:hover,.nav-links a.active{
      color:var(--text);
      background:rgba(105,166,218,.1);
    }
    .nav-links a.active:after{
      content:"";
      position:absolute;
      height:2px;
      border-radius:3px;
      background:var(--cyan);
      bottom:2px;
      left:12px;
      right:12px;
      box-shadow:0 0 9px var(--cyan);
    }
    .nav-tools{display:flex;gap:9px;align-items:center}
    .search{
      width:188px;
      height:40px;
      border:1px solid var(--line);
      border-radius:11px;
      display:flex;
      align-items:center;
      gap:8px;
      padding:0 10px;
      color:var(--dim);
      background:rgba(20,43,64,.45);
      transition:var(--ease);
    }
    .search:focus-within{
      border-color:var(--line-bright);
      box-shadow:0 0 0 3px rgba(91,232,240,.12);
    }
    .search input{
      width:100%;
      min-width:0;
      color:var(--text);
      border:0;
      outline:0;
      background:transparent;
      font-size:13px;
    }
    .search input::placeholder{color:#8298aa}
    .key{
      padding:1px 5px;
      border:1px solid var(--line);
      border-radius:5px;
      color:var(--dim);
      font-size:10px;
      white-space:nowrap;
    }
    .icon-btn,.menu-btn{
      height:40px;
      width:40px;
      display:grid;
      place-items:center;
      border:1px solid var(--line);
      border-radius:11px;
      background:rgba(20,43,64,.45);
      color:var(--text);
      transition:var(--ease);
    }
    .icon-btn:hover,.menu-btn:hover{
      border-color:var(--line-bright);
      color:var(--cyan);
      transform:translateY(-1px);
    }
    .menu-btn{display:none}
    .btn{
      display:inline-flex;
      min-height:46px;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:10px 18px;
      border:1px solid transparent;
      border-radius:12px;
      font-weight:760;
      font-size:15px;
      transition:var(--ease);
    }
    .btn-primary{
      color:#021620;
      background:linear-gradient(105deg,var(--cyan),#66b7ed);
      box-shadow:0 7px 25px rgba(52,214,230,.25);
    }
    .btn-primary:hover{
      transform:translateY(-2px);
      box-shadow:0 11px 29px rgba(52,214,230,.4);
      filter:brightness(1.06);
    }
    .btn-secondary{
      border-color:var(--line);
      background:rgba(14,37,57,.52);
      color:#dff5ff;
    }
    .btn-secondary:hover{
      border-color:var(--line-bright);
      background:rgba(28,63,89,.6);
      transform:translateY(-2px);
    }
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(91,232,240,.45);
      outline-offset:3px;
    }
    .nav-cta{min-height:40px;padding:7px 13px;font-size:13px}
    .hero-inner{
      position:relative;
      min-height:560px;
      padding:74px 0 64px;
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:64px;
      align-items:center;
    }
    .hero-inner:before{
      content:"03";
      position:absolute;
      right:-32px;
      top:36px;
      color:rgba(91,232,240,.06);
      font-size:190px;
      font-weight:900;
      letter-spacing:-.1em;
      pointer-events:none;
    }
    .eyebrow,.section-kicker{
      display:flex;
      align-items:center;
      gap:9px;
      color:var(--cyan);
      font-size:12px;
      font-weight:800;
      letter-spacing:.14em;
    }
    .eyebrow:before,.section-kicker:before{
      content:"";
      width:26px;
      height:1px;
      background:var(--cyan);
      box-shadow:0 0 8px var(--cyan);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      max-width:680px;
      margin:18px 0 20px;
      font-size:clamp(38px,5vw,68px);
      line-height:1.13;
      letter-spacing:-.06em;
    }
    .hero-copy>p{
      max-width:630px;
      color:#bfd1df;
      font-size:17px;
      line-height:2;
      margin-bottom:28px;
    }
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-note{
      display:flex;
      gap:12px;
      align-items:center;
      margin-top:27px;
      color:var(--dim);
      font-size:12px;
    }
    .hero-note b{
      color:var(--amber);
      font-size:15px;
    }
    .hero-visual{
      position:relative;
      min-height:430px;
      border:1px solid rgba(142,204,235,.22);
      border-radius:26px;
      overflow:hidden;
      background:#10283e;
      box-shadow:var(--shadow),0 0 46px rgba(42,167,201,.13);
    }
    .hero-visual img{
      width:100%;
      height:430px;
      object-fit:cover;
      opacity:.73;
      filter:saturate(.85) contrast(1.05);
    }
    .hero-visual:after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg,rgba(4,13,25,.08),rgba(4,13,25,.78)),
        linear-gradient(90deg,rgba(7,17,31,.35),transparent 55%);
    }
    .visual-label,.visual-caption,.visual-index{
      position:absolute;
      z-index:2;
    }
    .visual-label{
      top:20px;
      left:22px;
      color:var(--cyan);
      font-size:11px;
      letter-spacing:.14em;
    }
    .visual-index{
      right:21px;
      top:17px;
      color:rgba(237,247,255,.65);
      font-size:13px;
    }
    .visual-caption{
      left:24px;
      right:24px;
      bottom:22px;
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:20px;
    }
    .visual-caption strong{
      display:block;
      font-size:26px;
      line-height:1.25;
      letter-spacing:-.04em;
    }
    .visual-caption span{
      color:#b7cad8;
      font-size:12px;
    }
    .section{padding:104px 0}
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:30px;
      margin-bottom:40px;
    }
    .section-head h2{
      max-width:700px;
      margin:12px 0 0;
      font-size:clamp(29px,4vw,47px);
      line-height:1.22;
      letter-spacing:-.05em;
    }
    .section-head>p{
      max-width:470px;
      color:var(--muted);
      margin-bottom:4px;
    }
    .index-strip{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);
      margin-bottom:56px;
    }
    .index-item{
      min-height:104px;
      padding:20px 22px;
      border-right:1px solid var(--line);
      transition:var(--ease);
    }
    .index-item:last-child{border-right:0}
    .index-item:hover{background:rgba(25,67,93,.24)}
    .index-item small{color:var(--amber);font-size:11px;letter-spacing:.12em}
    .index-item strong{display:block;margin-top:7px;font-size:16px}
    .index-item span{display:block;color:var(--dim);font-size:12px;line-height:1.6}
    .scenario-layout{
      display:grid;
      grid-template-columns:280px 1fr;
      gap:32px;
      align-items:start;
    }
    .side-note{
      position:sticky;
      top:106px;
      padding:24px;
      border-left:2px solid var(--cyan);
      background:linear-gradient(135deg,rgba(14,42,64,.72),rgba(9,22,39,.4));
    }
    .side-note h3{font-size:20px;margin-bottom:12px}
    .side-note p{color:var(--muted);font-size:14px;line-height:1.85}
    .side-note ul{padding:0;margin:22px 0 0;list-style:none}
    .side-note li{
      display:flex;
      gap:9px;
      padding:9px 0;
      border-bottom:1px solid var(--line);
      color:#c7d9e5;
      font-size:13px;
    }
    .side-note li:before{content:"↗";color:var(--cyan)}
    .solution-stack{display:grid;gap:16px}
    .solution-card{
      position:relative;
      display:grid;
      grid-template-columns:76px 1fr 150px;
      gap:22px;
      align-items:center;
      padding:28px;
      border:1px solid var(--line);
      border-radius:18px;
      background:linear-gradient(110deg,rgba(13,35,56,.92),rgba(8,24,42,.68));
      transition:var(--ease);
      overflow:hidden;
    }
    .solution-card:before{
      content:"";
      position:absolute;
      left:0;
      top:0;
      bottom:0;
      width:3px;
      background:linear-gradient(var(--cyan),transparent);
      opacity:.45;
    }
    .solution-card:hover{
      transform:translateX(5px);
      border-color:var(--line-bright);
      box-shadow:0 16px 38px rgba(0,0,0,.2),0 0 24px rgba(56,205,220,.1);
    }
    .solution-number{
      color:var(--cyan);
      font-size:28px;
      font-weight:800;
      letter-spacing:-.06em;
    }
    .solution-card h3{margin:0 0 6px;font-size:22px}
    .solution-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.8}
    .solution-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:13px}
    .tag{
      display:inline-flex;
      align-items:center;
      min-height:25px;
      padding:2px 9px;
      border:1px solid rgba(91,232,240,.24);
      border-radius:30px;
      color:#aeeef2;
      background:rgba(30,120,139,.1);
      font-size:11px;
    }
    .solution-card .btn{min-height:38px;padding:7px 12px;font-size:12px}
    .combo-section{
      background:linear-gradient(180deg,rgba(10,25,43,.12),rgba(11,37,58,.32));
      border-top:1px solid rgba(146,207,237,.07);
      border-bottom:1px solid rgba(146,207,237,.07);
    }
    .combo-grid{
      display:grid;
      grid-template-columns:1.18fr .82fr;
      gap:22px;
    }
    .combo-card{
      position:relative;
      min-height:310px;
      padding:31px;
      border:1px solid var(--line);
      border-radius:22px;
      overflow:hidden;
      background:var(--panel);
      box-shadow:var(--shadow);
    }
    .combo-card.large{min-height:440px}
    .combo-card img{
      position:absolute;
      inset:0;
      width:100%;
      height:100%;
      object-fit:cover;
      opacity:.48;
      mix-blend-mode:screen;
    }
    .combo-card:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(90deg,#091a2b 4%,rgba(7,19,34,.86) 46%,rgba(7,19,34,.2));
    }
    .combo-content{position:relative;z-index:1;max-width:510px}
    .combo-card h3{font-size:30px;line-height:1.25;margin:16px 0 12px;letter-spacing:-.05em}
    .combo-card p{color:#c2d5e2;line-height:1.9}
    .combo-card .mini-line{
      display:flex;
      gap:22px;
      margin-top:28px;
      padding-top:18px;
      border-top:1px solid var(--line);
      color:var(--muted);
      font-size:12px;
    }
    .mini-line b{display:block;color:var(--cyan);font-size:19px;line-height:1.2}
    .mini-line span{display:block}
    .small-combos{display:grid;gap:22px}
    .small-combos .combo-card{min-height:209px;padding:25px}
    .small-combos .combo-card h3{font-size:21px;margin:11px 0 6px}
    .small-combos .combo-card p{font-size:13px;margin-bottom:0}
    .criteria{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .criteria-item{
      display:flex;
      gap:18px;
      padding:22px;
      border-bottom:1px solid var(--line);
    }
    .criteria-item span{
      flex:none;
      width:36px;
      height:36px;
      display:grid;
      place-items:center;
      border-radius:11px;
      color:#07111f;
      background:var(--amber);
      font-weight:800;
    }
    .criteria-item h3{margin:0 0 5px;font-size:17px}
    .criteria-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.75}
    .faq-list{max-width:920px;margin:0 auto}
    .faq-item{
      border-top:1px solid var(--line);
      transition:var(--ease);
    }
    .faq-item:last-child{border-bottom:1px solid var(--line)}
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      padding:22px 4px;
      border:0;
      background:none;
      color:var(--text);
      text-align:left;
      font-weight:750;
      font-size:17px;
    }
    .faq-question span:last-child{
      color:var(--cyan);
      font-size:24px;
      font-weight:400;
      transition:var(--ease);
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      color:var(--muted);
      font-size:14px;
      line-height:1.9;
      transition:max-height .35s ease,padding .35s ease;
    }
    .faq-item.open .faq-answer{max-height:180px;padding:0 40px 22px 4px}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{
      position:relative;
      overflow:hidden;
      padding:64px;
      border:1px solid rgba(91,232,240,.35);
      border-radius:26px;
      background:
        radial-gradient(circle at 90% 15%,rgba(128,107,255,.4),transparent 28%),
        radial-gradient(circle at 20% 80%,rgba(21,185,209,.24),transparent 32%),
        linear-gradient(125deg,#102e4b,#111b42);
      box-shadow:0 20px 55px rgba(0,0,0,.28),0 0 40px rgba(45,191,216,.1);
    }
    .cta:before{
      content:"";
      position:absolute;
      right:-100px;
      bottom:-150px;
      width:390px;
      height:390px;
      border:1px solid rgba(91,232,240,.22);
      border-radius:50%;
      box-shadow:0 0 0 30px rgba(91,232,240,.04),0 0 0 70px rgba(91,232,240,.025);
    }
    .cta-content{position:relative;z-index:1;max-width:670px}
    .cta h2{font-size:clamp(28px,4vw,45px);line-height:1.3;letter-spacing:-.05em;margin:13px 0}
    .cta p{color:#c3d9e8;max-width:610px}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .footer{
      padding:68px 0 25px;
      background:#040b15;
      border-top:1px solid rgba(177,218,246,.1);
    }
    .footer-top{
      display:grid;
      grid-template-columns:1.7fr 1fr 1fr 1fr;
      gap:38px;
      padding-bottom:48px;
    }
    .footer .brand{margin-bottom:19px}
    .footer p{max-width:360px;color:var(--muted);font-size:13px;line-height:1.9}
    .footer h3{margin:4px 0 15px;font-size:14px;color:#dcecf5}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:var(--dim);font-size:13px;transition:var(--ease)}
    .footer-links a:hover{color:var(--cyan);transform:translateX(2px)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding-top:21px;
      border-top:1px solid var(--line);
      color:var(--dim);
      font-size:11px;
    }
    .footer-records{display:flex;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .footer-records a:hover{color:var(--cyan)}
    .search-panel{
      position:fixed;
      top:84px;
      right:24px;
      z-index:50;
      width:310px;
      padding:18px;
      border:1px solid var(--line-bright);
      border-radius:15px;
      background:rgba(7,20,35,.96);
      box-shadow:var(--shadow),0 0 30px rgba(91,232,240,.12);
      display:none;
    }
    .search-panel.show{display:block}
    .search-panel strong{display:block;margin-bottom:5px}
    .search-panel p{margin:0;color:var(--muted);font-size:13px}
    .search-panel a{display:inline-block;margin-top:12px;color:var(--cyan);font-size:13px}
    .form-state{
      position:fixed;
      right:22px;
      bottom:22px;
      z-index:60;
      max-width:310px;
      padding:16px 18px;
      border:1px solid var(--line-bright);
      border-radius:13px;
      background:rgba(7,21,35,.96);
      color:#dffaff;
      box-shadow:var(--shadow);
      display:none;
    }
    .form-state.show{display:block}
    .loading-bar{
      height:3px;
      width:100%;
      margin-top:16px;
      overflow:hidden;
      border-radius:4px;
      background:rgba(91,232,240,.12);
    }
    .loading-bar:after{
      content:"";
      display:block;
      width:38%;
      height:100%;
      background:var(--cyan);
      animation:load 1.4s infinite ease-in-out;
    }
    @keyframes load{0%{transform:translateX(-120%)}100%{transform:translateX(300%)}}
    @media(max-width:1100px){
      .nav{gap:12px}
      .nav-links a{padding-left:7px;padding-right:7px}
      .search{width:160px}
      .hero-inner{gap:38px}
    }
    @media(max-width:992px){
      .nav-links{display:none}
      .menu-btn{display:grid}
      .hero-inner{grid-template-columns:1fr;padding-top:58px}
      .hero-copy{max-width:760px}
      .hero-visual{max-width:720px}
      .scenario-layout,.combo-grid{grid-template-columns:1fr}
      .side-note{position:static}
      .small-combos{grid-template-columns:1fr 1fr}
      .footer-top{grid-template-columns:1.5fr 1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 34px),var(--container))}
      .nav{height:68px}
      .search{width:42px;padding:0 11px}
      .search input,.search .key{display:none}
      .nav-cta{display:none}
      .hero-inner{min-height:0;padding:58px 0 46px}
      h1{font-size:clamp(37px,10vw,55px)}
      .hero-visual,.hero-visual img{height:350px;min-height:350px}
      .section{padding:72px 0}
      .section-head{display:block;margin-bottom:30px}
      .section-head>p{margin-top:18px}
      .index-strip{grid-template-columns:1fr 1fr}
      .index-item:nth-child(2){border-right:0}
      .index-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .solution-card{grid-template-columns:54px 1fr}
      .solution-card .btn{grid-column:2;justify-self:start}
      .combo-card.large{min-height:380px}
      .criteria{grid-template-columns:1fr}
      .cta{padding:38px 25px}
      .footer-top{grid-template-columns:1fr 1fr;gap:30px}
      .footer-top>div:first-child{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-records{justify-content:flex-start;margin-top:12px}
      .site-header.menu-open .nav-links{
        position:absolute;
        display:grid;
        top:68px;
        left:0;
        right:0;
        padding:18px;
        border-bottom:1px solid var(--line);
        background:rgba(5,14,26,.98);
        box-shadow:var(--shadow);
      }
      .site-header.menu-open .nav-links a{padding:13px 15px}
    }
    @media(max-width:520px){
      .container{width:min(calc(100% - 28px),var(--container))}
      .hero-actions .btn{width:100%}
      .hero-visual,.hero-visual img{height:300px;min-height:300px}
      .visual-caption strong{font-size:21px}
      .index-strip{grid-template-columns:1fr}
      .index-item{border-right:0!important;border-bottom:1px solid var(--line)}
      .index-item:last-child{border-bottom:0}
      .solution-card{padding:21px;gap:13px}
      .solution-card h3{font-size:19px}
      .small-combos{grid-template-columns:1fr}
      .combo-card,.combo-card.large{min-height:290px;padding:24px}
      .faq-question{font-size:15px;padding:18px 0}
      .footer-top{grid-template-columns:1fr}
      .footer-top>div:first-child{grid-column:auto}
      .footer-records{display:grid;gap:7px}
    }

/* roulang page: category4 */
:root{
      --bg:#07111f;
      --bg-deep:#040b15;
      --panel:#0c1b2dcc;
      --panel-solid:#0d1d30;
      --panel-light:#122a42;
      --line:rgba(162,205,234,.18);
      --line-bright:rgba(90,226,240,.55);
      --text:#edf7ff;
      --muted:#a5b9cb;
      --dim:#71879d;
      --cyan:#5be8f0;
      --cyan-2:#15b9d1;
      --blue:#5685ff;
      --violet:#806bff;
      --amber:#e6b269;
      --green:#54d9ae;
      --danger:#ff806f;
      --radius:20px;
      --radius-sm:13px;
      --shadow:0 22px 60px rgba(0,0,0,.27);
      --container:1240px;
      --ease:all .25s cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--bg);
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.8;
      overflow-x:hidden
    }
    body:before{
      content:"";position:fixed;inset:0;z-index:-2;
      background:
      radial-gradient(circle at 82% 8%,rgba(42,101,180,.18),transparent 27rem),
      radial-gradient(circle at 11% 38%,rgba(16,161,177,.10),transparent 25rem),
      linear-gradient(180deg,#081523 0%,#07111f 52%,#040b15 100%)
    }
    body:after{
      content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.16;
      background-image:linear-gradient(rgba(173,221,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(173,221,255,.06) 1px,transparent 1px);
      background-size:52px 52px;
      mask-image:linear-gradient(#000,transparent 80%)
    }
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:40;
      border-bottom:1px solid rgba(177,218,246,.12);
      background:rgba(5,13,24,.74);
      backdrop-filter:blur(18px)
    }
    .nav{height:76px;display:flex;align-items:center;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;flex:none;font-size:22px;font-weight:850;letter-spacing:.04em}
    .brand-mark{
      width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
      color:#001820;background:linear-gradient(135deg,var(--cyan),var(--blue));
      box-shadow:0 0 22px rgba(91,232,240,.35);font-weight:900
    }
    .brand small{display:block;font-size:9px;line-height:1;letter-spacing:.19em;color:var(--muted);font-weight:700;margin-top:-2px}
    .nav-links{display:flex;align-items:center;justify-content:center;gap:2px;flex:1}
    .nav-links a{
      position:relative;padding:9px 10px;border-radius:9px;color:var(--muted);
      font-size:14px;white-space:nowrap;transition:var(--ease)
    }
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:rgba(105,166,218,.1)}
    .nav-links a.active:after{
      content:"";position:absolute;height:2px;border-radius:3px;background:var(--cyan);
      bottom:2px;left:12px;right:12px;box-shadow:0 0 9px var(--cyan)
    }
    .nav-tools{display:flex;gap:9px;align-items:center}
    .search{
      width:188px;height:40px;border:1px solid var(--line);border-radius:11px;
      display:flex;align-items:center;gap:8px;padding:0 10px;color:var(--dim);
      background:rgba(20,43,64,.45);transition:var(--ease)
    }
    .search:focus-within{border-color:var(--line-bright);box-shadow:0 0 0 3px rgba(91,232,240,.12)}
    .search input{width:100%;min-width:0;color:var(--text);border:0;outline:0;background:transparent;font-size:13px}
    .search input::placeholder{color:#8298aa}
    .key{font-size:10px;color:var(--dim);white-space:nowrap}
    .icon-btn,.menu-btn{
      height:40px;width:40px;display:grid;place-items:center;border:1px solid var(--line);
      border-radius:11px;background:rgba(20,43,64,.45);color:var(--text);transition:var(--ease)
    }
    .icon-btn:hover,.menu-btn:hover{border-color:var(--line-bright);color:var(--cyan);transform:translateY(-1px)}
    .menu-btn{display:none}
    .btn{
      display:inline-flex;min-height:46px;align-items:center;justify-content:center;gap:8px;
      padding:10px 18px;border:1px solid transparent;border-radius:12px;font-weight:760;
      font-size:15px;transition:var(--ease)
    }
    .btn-primary{
      color:#021620;background:linear-gradient(105deg,var(--cyan),#66b7ed);
      box-shadow:0 7px 25px rgba(52,214,230,.25)
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 11px 29px rgba(52,214,230,.4);filter:brightness(1.06)}
    .btn-secondary{border-color:var(--line);background:rgba(14,37,57,.52);color:#dff5ff}
    .btn-secondary:hover{border-color:var(--line-bright);background:rgba(28,63,89,.6);transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(91,232,240,.45);outline-offset:3px
    }
    .nav-cta{min-height:40px;padding:7px 13px;font-size:13px}
    .hero-inner{
      position:relative;padding:78px 0 86px;border-bottom:1px solid var(--line);overflow:hidden
    }
    .hero-inner:before{
      content:"";position:absolute;inset:0;z-index:-2;
      background:linear-gradient(90deg,rgba(7,17,31,.98) 3%,rgba(7,17,31,.84) 48%,rgba(7,17,31,.35)),url('/assets/images/backpic/back-2.webp') center/cover
    }
    .hero-inner:after{
      content:"";position:absolute;inset:0;z-index:-1;
      background:linear-gradient(180deg,transparent 55%,var(--bg) 100%)
    }
    .crumbs{display:flex;gap:9px;align-items:center;color:var(--dim);font-size:13px;margin-bottom:38px}
    .crumbs a:hover{color:var(--cyan)}
    .crumbs span{color:#46647d}
    .hero-content{max-width:750px}
    .eyebrow,.section-kicker{
      display:flex;align-items:center;gap:9px;color:var(--cyan);font-size:12px;
      font-weight:800;letter-spacing:.14em
    }
    .eyebrow:before,.section-kicker:before{
      content:"";width:26px;height:1px;background:var(--cyan);box-shadow:0 0 8px var(--cyan)
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      max-width:780px;margin:17px 0 20px;font-size:clamp(42px,6vw,76px);
      line-height:1.12;letter-spacing:-.055em;font-weight:900
    }
    .hero-content>p{max-width:690px;color:#c1d2df;font-size:18px;line-height:2;margin-bottom:30px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-stamp{
      position:absolute;right:4%;top:120px;width:160px;height:160px;border:1px solid rgba(91,232,240,.35);
      border-radius:50%;display:grid;place-items:center;color:var(--cyan);font-size:12px;
      letter-spacing:.14em;transform:rotate(12deg);background:rgba(7,20,36,.35)
    }
    .hero-stamp:before{content:"CASE / 04";position:absolute;inset:15px;border:1px dashed rgba(91,232,240,.35);border-radius:50%;display:grid;place-items:center}
    .hero-stamp span{margin-top:66px;color:var(--amber);font-size:10px}
    .section{padding:112px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:36px;margin-bottom:40px}
    .section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.045em;margin:14px 0 0}
    .section-head>p{max-width:470px;color:var(--muted);margin:0}
    .case-index{
      display:grid;grid-template-columns:1fr 1.8fr 1fr;gap:1px;
      background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden
    }
    .index-item{padding:25px 26px;background:rgba(10,28,47,.72);transition:var(--ease)}
    .index-item:hover{background:rgba(18,52,77,.9)}
    .index-number{color:var(--amber);font-size:12px;letter-spacing:.12em}
    .index-item h3{font-size:18px;margin:8px 0 5px}
    .index-item p{color:var(--muted);font-size:14px;line-height:1.7;margin:0}
    .case-feature{
      display:grid;grid-template-columns:1.18fr .82fr;gap:28px;align-items:stretch
    }
    .case-visual{
      position:relative;min-height:440px;overflow:hidden;border:1px solid var(--line);
      border-radius:24px;background:var(--panel-solid);box-shadow:var(--shadow)
    }
    .case-visual img{width:100%;height:100%;object-fit:cover;opacity:.78}
    .case-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(3,12,24,.94),transparent 62%)}
    .visual-caption{position:absolute;z-index:2;left:28px;right:28px;bottom:25px;display:flex;justify-content:space-between;align-items:end;gap:20px}
    .visual-caption strong{font-size:25px;line-height:1.3}
    .visual-caption small{display:block;color:var(--cyan);font-size:11px;letter-spacing:.14em;margin-bottom:7px}
    .visual-caption span{color:#c5d6e3;font-size:13px}
    .feature-copy{padding:16px 4px 12px 18px}
    .feature-copy h2{font-size:36px;line-height:1.25;margin:15px 0 18px;letter-spacing:-.04em}
    .feature-copy>p{color:var(--muted);line-height:1.95}
    .result-list{list-style:none;padding:0;margin:28px 0 30px;border-top:1px solid var(--line)}
    .result-list li{display:flex;gap:16px;padding:17px 0;border-bottom:1px solid var(--line);color:#d8e8f2}
    .result-list b{color:var(--cyan);font-size:13px;min-width:62px}
    .case-label{display:inline-flex;padding:5px 10px;border:1px solid rgba(230,178,105,.35);border-radius:999px;color:var(--amber);font-size:12px}
    .case-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .case-card{
      display:grid;grid-template-columns:190px 1fr;min-height:235px;overflow:hidden;
      border:1px solid var(--line);border-radius:18px;background:rgba(12,30,49,.72);transition:var(--ease)
    }
    .case-card:hover{transform:translateY(-4px);border-color:var(--line-bright);box-shadow:0 14px 40px rgba(0,0,0,.24),0 0 22px rgba(91,232,240,.08)}
    .case-card img{width:100%;height:100%;object-fit:cover;filter:saturate(.82)}
    .case-body{padding:24px}
    .case-body h3{font-size:21px;line-height:1.35;margin:12px 0 9px}
    .case-body p{color:var(--muted);font-size:14px;line-height:1.8;margin-bottom:18px}
    .case-meta{display:flex;gap:8px;flex-wrap:wrap}
    .meta-chip{padding:4px 8px;border-radius:7px;background:rgba(86,133,255,.12);color:#b9cfff;font-size:11px}
    .compare{
      display:grid;grid-template-columns:1fr 52px 1fr;align-items:stretch;gap:0;
      border:1px solid var(--line);border-radius:22px;overflow:hidden;background:rgba(11,28,46,.76)
    }
    .compare-block{padding:34px 38px}
    .compare-block.before{background:rgba(90,36,48,.14)}
    .compare-block.after{background:rgba(26,92,96,.16)}
    .compare-block h3{font-size:20px;margin:0 0 18px}
    .compare-block ul{list-style:none;padding:0;margin:0}
    .compare-block li{position:relative;padding:9px 0 9px 25px;color:var(--muted);border-bottom:1px solid rgba(162,205,234,.1)}
    .compare-block li:before{content:"";position:absolute;left:0;top:18px;width:8px;height:8px;border-radius:50%;background:var(--danger)}
    .after li:before{background:var(--green);box-shadow:0 0 8px var(--green)}
    .compare-arrow{display:grid;place-items:center;background:rgba(86,133,255,.12);color:var(--cyan);font-size:25px}
    .metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
    .metric{padding:23px;border:1px solid var(--line);border-radius:15px;background:rgba(12,29,47,.68)}
    .metric strong{display:block;font-size:26px;color:var(--cyan);line-height:1.2;margin-bottom:5px}
    .metric span{font-size:13px;color:var(--muted)}
    .quote-layout{display:grid;grid-template-columns:1.4fr .6fr;gap:24px;align-items:stretch}
    .quote-card{padding:42px;border:1px solid var(--line-bright);border-radius:24px;background:linear-gradient(135deg,rgba(17,52,78,.86),rgba(15,25,57,.72));box-shadow:0 0 38px rgba(91,232,240,.08)}
    .quote-mark{font-size:60px;color:var(--cyan);line-height:.8}
    blockquote{font-size:25px;line-height:1.65;margin:17px 0 28px;letter-spacing:-.02em}
    .quote-person{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:18px;color:var(--muted);font-size:13px}
    .quote-rail{display:flex;flex-direction:column;gap:1px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--line)}
    .rail-item{padding:22px;background:rgba(12,29,47,.83);transition:var(--ease)}
    .rail-item:hover{background:rgba(20,52,76,.92)}
    .rail-item b{display:block;color:var(--amber);font-size:12px;margin-bottom:7px}
    .rail-item p{color:#cfdee8;font-size:14px;line-height:1.7;margin:0}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;display:flex;justify-content:space-between;gap:20px;text-align:left;padding:22px 4px;background:none;border:0;color:var(--text);font-weight:760;font-size:17px}
    .faq-question span:last-child{color:var(--cyan);font-size:24px;line-height:1;transition:var(--ease)}
    .faq-answer{max-width:820px;color:var(--muted);font-size:15px;line-height:1.9;padding:0 45px 22px 4px;display:none}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta{
      position:relative;overflow:hidden;padding:55px 58px;border:1px solid var(--line-bright);
      border-radius:25px;background:linear-gradient(105deg,rgba(23,77,105,.88),rgba(37,37,89,.84))
    }
    .cta:before{content:"";position:absolute;width:370px;height:370px;right:-90px;top:-170px;border-radius:50%;background:rgba(91,232,240,.14);filter:blur(4px)}
    .cta-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:center}
    .cta h2{font-size:38px;line-height:1.25;margin:12px 0 15px;letter-spacing:-.04em}
    .cta p{color:#c5dbe5;max-width:500px;margin:0}
    .consult-form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .consult-form label{display:block;color:#cfe5ef;font-size:13px}
    .consult-form input,.consult-form select,.consult-form textarea{
      width:100%;margin-top:6px;padding:11px 13px;border:1px solid rgba(195,229,245,.2);
      border-radius:10px;background:rgba(3,15,28,.45);color:var(--text);outline:0
    }
    .consult-form textarea{min-height:78px;resize:vertical}
    .consult-form input::placeholder,.consult-form textarea::placeholder{color:#7e98aa}
    .consult-form input:hover,.consult-form select:hover,.consult-form textarea:hover{border-color:rgba(91,232,240,.4)}
    .consult-form input:focus,.consult-form select:focus,.consult-form textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(91,232,240,.12)}
    .field-full{grid-column:1/-1}
    .form-note{grid-column:1/-1;color:#8fa8b8;font-size:12px;margin:0}
    .form-message{grid-column:1/-1;display:none;padding:10px 13px;border-radius:9px;font-size:13px}
    .form-message.error{display:block;color:#ffd2cb;background:rgba(255,128,111,.1);border:1px solid rgba(255,128,111,.35)}
    .form-message.success{display:block;color:#b8ffe7;background:rgba(84,217,174,.1);border:1px solid rgba(84,217,174,.35)}
    .footer{padding:60px 0 22px;background:rgba(3,11,20,.82);border-top:1px solid var(--line)}
    .footer-top{display:grid;grid-template-columns:1.6fr .8fr .8fr .8fr;gap:38px;padding-bottom:45px}
    .footer .brand{margin-bottom:20px}
    .footer p{max-width:370px;color:var(--muted);font-size:14px;line-height:1.9}
    .footer h3{font-size:14px;margin:4px 0 15px;color:var(--text)}
    .footer-links{display:flex;flex-direction:column;gap:8px}
    .footer-links a{color:var(--muted);font-size:13px;transition:var(--ease)}
    .footer-links a:hover{color:var(--cyan);transform:translateX(2px)}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid var(--line);color:var(--dim);font-size:12px}
    .footer-records{display:flex;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .footer-records a:hover{color:var(--cyan)}
    .search-state{display:none;position:absolute;top:58px;right:0;width:290px;padding:17px;border:1px solid var(--line-bright);border-radius:13px;background:#0b1c2deF;box-shadow:var(--shadow);font-size:13px;color:var(--muted)}
    .search-wrap{position:relative}
    .search-state strong{display:block;color:var(--text);margin-bottom:5px}
    .search-state button{border:0;background:none;color:var(--cyan);padding:0;margin-top:8px}
    .loading-bar{height:3px;width:100%;overflow:hidden;background:rgba(91,232,240,.1);margin-top:30px}
    .loading-bar:after{content:"";display:block;width:35%;height:100%;background:var(--cyan);animation:load 2.4s ease-in-out infinite}
    @keyframes load{0%{transform:translateX(-110%)}100%{transform:translateX(310%)}}
    @media(max-width:1100px){
      .nav{gap:12px}.nav-links a{padding-left:7px;padding-right:7px}.search{width:155px}
      .hero-stamp{right:1%}.case-feature{grid-template-columns:1fr 1fr}
    }
    @media(max-width:900px){
      .nav-links{display:none;position:absolute;top:76px;left:0;right:0;padding:16px 24px 24px;flex-direction:column;align-items:stretch;background:rgba(5,14,26,.97);border-bottom:1px solid var(--line)}
      .nav-links.open{display:flex}.nav-links a{padding:13px 14px}
      .menu-btn{display:grid}.nav-cta{display:none}.search{width:190px}
      .hero-stamp{opacity:.45;top:90px}.case-feature,.quote-layout,.cta-grid{grid-template-columns:1fr}
      .feature-copy{padding:20px 0 0}.case-visual{min-height:380px}
      .footer-top{grid-template-columns:1.4fr 1fr 1fr}
      .footer-top>div:last-child{grid-column:2}
    }
    @media(max-width:680px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .nav{height:68px}.site-header{position:sticky}.nav-links{top:68px}
      .brand{font-size:19px}.brand-mark{width:29px;height:29px}
      .search{width:42px;border:0;background:transparent;padding:0}.search input,.key{display:none}.search>span:first-child{font-size:25px}
      .hero-inner{padding:52px 0 68px}.crumbs{margin-bottom:27px}
      h1{font-size:43px}.hero-content>p{font-size:16px;line-height:1.85}
      .hero-stamp{display:none}.section{padding:74px 0}.section-head{display:block;margin-bottom:28px}.section-head>p{margin-top:17px}
      .case-index,.case-grid,.compare,.metrics{grid-template-columns:1fr}
      .compare-arrow{height:42px}.case-card{grid-template-columns:115px 1fr}.case-body{padding:18px}
      .case-body h3{font-size:18px}.case-body p{font-size:13px}
      .case-visual{min-height:310px}.visual-caption{left:19px;right:19px;bottom:18px}.visual-caption strong{font-size:20px}
      .quote-card{padding:27px 23px}.quote-card blockquote{font-size:20px}
      .quote-person{display:block}.quote-person span{display:block;margin-top:7px}
      .cta{padding:33px 22px}.cta h2{font-size:29px}.consult-form{grid-template-columns:1fr}
      .field-full,.form-note,.form-message{grid-column:auto}
      .footer{padding-top:46px}.footer-top{grid-template-columns:1fr 1fr;gap:30px}.footer-top>div:first-child{grid-column:1/-1}.footer-top>div:last-child{grid-column:auto}
      .footer-bottom{display:block}.footer-records{justify-content:flex-start;margin-top:14px;gap:8px 15px}
    }
    @media(max-width:420px){
      .nav-tools{gap:4px}.icon-btn{display:none}.hero-actions .btn{width:100%}
      .case-card{display:block}.case-card img{height:170px}.case-body{padding:20px}
    }

/* roulang page: category5 */
:root{
      --bg:#07111f;
      --bg-deep:#040b15;
      --panel:#0c1b2dcc;
      --panel-solid:#0d1d30;
      --panel-light:#122a42;
      --line:rgba(162,205,234,.18);
      --line-bright:rgba(90,226,240,.55);
      --text:#edf7ff;
      --muted:#a5b9cb;
      --dim:#71879d;
      --cyan:#5be8f0;
      --cyan-2:#15b9d1;
      --blue:#5685ff;
      --violet:#806bff;
      --amber:#e6b269;
      --green:#54d9ae;
      --danger:#ff806f;
      --radius:20px;
      --radius-sm:13px;
      --shadow:0 22px 60px rgba(0,0,0,.27);
      --container:1240px;
      --ease:all .25s cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:var(--bg);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      font-size:16px;
      line-height:1.8;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      z-index:-2;
      background:
        radial-gradient(circle at 86% 5%,rgba(42,101,180,.18),transparent 28rem),
        radial-gradient(circle at 8% 46%,rgba(16,161,177,.10),transparent 25rem),
        linear-gradient(180deg,#081523 0%,#07111f 52%,#040b15 100%);
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      z-index:-1;
      pointer-events:none;
      opacity:.14;
      background-image:
        linear-gradient(rgba(173,221,255,.08) 1px,transparent 1px),
        linear-gradient(90deg,rgba(173,221,255,.06) 1px,transparent 1px);
      background-size:52px 52px;
      mask-image:linear-gradient(#000,transparent 82%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      border-bottom:1px solid rgba(177,218,246,.12);
      background:rgba(5,13,24,.78);
      backdrop-filter:blur(18px);
    }
    .nav{height:76px;display:flex;align-items:center;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;flex:none;font-size:22px;font-weight:850;letter-spacing:.04em}
    .brand-mark{
      width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
      color:#001820;background:linear-gradient(135deg,var(--cyan),var(--blue));
      box-shadow:0 0 22px rgba(91,232,240,.35);font-weight:900
    }
    .brand small{display:block;font-size:9px;line-height:1;letter-spacing:.19em;color:var(--muted);font-weight:700;margin-top:-2px}
    .nav-links{display:flex;align-items:center;justify-content:center;gap:2px;flex:1}
    .nav-links a{
      position:relative;padding:9px 10px;border-radius:9px;color:var(--muted);
      font-size:14px;white-space:nowrap;transition:var(--ease)
    }
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:rgba(105,166,218,.1)}
    .nav-links a.active:after{
      content:"";position:absolute;height:2px;border-radius:3px;background:var(--cyan);
      bottom:2px;left:12px;right:12px;box-shadow:0 0 9px var(--cyan)
    }
    .nav-tools{display:flex;gap:9px;align-items:center}
    .search{
      width:188px;height:40px;border:1px solid var(--line);border-radius:11px;
      display:flex;align-items:center;gap:8px;padding:0 10px;color:var(--dim);
      background:rgba(20,43,64,.45);transition:var(--ease)
    }
    .search:focus-within{border-color:var(--line-bright);box-shadow:0 0 0 3px rgba(91,232,240,.12)}
    .search input{width:100%;min-width:0;color:var(--text);border:0;outline:0;background:transparent;font-size:13px}
    .search input::placeholder{color:#8298aa}
    .key{font-size:10px;color:var(--dim);white-space:nowrap}
    .icon-btn,.menu-btn{
      height:40px;width:40px;display:grid;place-items:center;border:1px solid var(--line);
      border-radius:11px;background:rgba(20,43,64,.45);color:var(--text);transition:var(--ease)
    }
    .icon-btn:hover,.menu-btn:hover{border-color:var(--line-bright);color:var(--cyan);transform:translateY(-1px)}
    .menu-btn{display:none}
    .btn{
      display:inline-flex;min-height:46px;align-items:center;justify-content:center;gap:8px;
      padding:10px 18px;border:1px solid transparent;border-radius:12px;font-weight:760;
      font-size:15px;transition:var(--ease)
    }
    .btn-primary{
      color:#021620;background:linear-gradient(105deg,var(--cyan),#66b7ed);
      box-shadow:0 7px 25px rgba(52,214,230,.25)
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 11px 29px rgba(52,214,230,.4);filter:brightness(1.06)}
    .btn-secondary{border-color:var(--line);background:rgba(14,37,57,.52);color:#dff5ff}
    .btn-secondary:hover{border-color:var(--line-bright);background:rgba(28,63,89,.6);transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(91,232,240,.45);outline-offset:3px
    }
    .nav-cta{min-height:40px;padding:7px 13px;font-size:13px}
    .page-hero{
      position:relative;
      min-height:560px;
      display:flex;
      align-items:center;
      overflow:hidden;
      border-bottom:1px solid rgba(162,205,234,.11);
    }
    .page-hero-bg{
      position:absolute;inset:0;z-index:-2;
      background:
        linear-gradient(90deg,#06101e 4%,rgba(6,16,30,.9) 40%,rgba(6,16,30,.3) 100%),
        url('/assets/images/backpic/back-3.webp') center/cover;
    }
    .page-hero:after{
      content:"";position:absolute;z-index:-1;left:0;right:0;bottom:0;height:150px;
      background:linear-gradient(transparent,var(--bg))
    }
    .hero-layout{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:70px;
      align-items:center;
      padding:86px 0 88px;
    }
    .breadcrumb{display:flex;align-items:center;gap:9px;color:var(--dim);font-size:13px;margin-bottom:24px}
    .breadcrumb span{color:var(--cyan)}
    .eyebrow,.section-kicker{
      display:flex;align-items:center;gap:9px;color:var(--cyan);
      font-size:12px;font-weight:800;letter-spacing:.14em
    }
    .eyebrow:before,.section-kicker:before{
      content:"";width:26px;height:1px;background:var(--cyan);box-shadow:0 0 8px var(--cyan)
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      max-width:620px;margin-bottom:20px;font-size:clamp(38px,5.1vw,68px);
      line-height:1.12;letter-spacing:-.055em
    }
    h1 em{font-style:normal;color:var(--cyan)}
    .hero-summary{max-width:620px;color:#c1d2df;font-size:17px;line-height:2;margin-bottom:28px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-visual{position:relative;min-height:382px}
    .visual-frame{
      position:absolute;inset:22px 0 0 35px;border:1px solid rgba(91,232,240,.38);
      border-radius:24px;overflow:hidden;background:var(--panel-solid);
      box-shadow:var(--shadow),0 0 42px rgba(45,176,205,.15);transform:rotate(2deg)
    }
    .visual-frame img{width:100%;height:100%;object-fit:cover;opacity:.73}
    .visual-frame:after{
      content:"";position:absolute;inset:0;
      background:linear-gradient(135deg,rgba(15,35,69,.15),rgba(3,14,29,.78))
    }
    .visual-panel{
      position:absolute;z-index:2;left:0;bottom:28px;width:245px;padding:21px;
      border:1px solid var(--line-bright);border-radius:17px;
      background:rgba(8,24,41,.82);backdrop-filter:blur(16px);
      box-shadow:0 18px 45px rgba(0,0,0,.36)
    }
    .visual-panel .number{font-size:12px;color:var(--amber);letter-spacing:.12em}
    .visual-panel strong{display:block;margin:12px 0 4px;font-size:23px;line-height:1.3}
    .visual-panel p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
    .visual-note{
      position:absolute;z-index:3;right:-14px;top:0;padding:9px 13px;
      color:#07111f;background:var(--cyan);font-size:12px;font-weight:800;
      border-radius:8px;transform:rotate(-5deg);box-shadow:0 0 22px rgba(91,232,240,.3)
    }
    .section{padding:112px 0}
    .section-head{display:flex;justify-content:space-between;gap:35px;align-items:end;margin-bottom:42px}
    .section-head h2{max-width:650px;margin:12px 0 0;font-size:clamp(29px,4vw,48px);line-height:1.2;letter-spacing:-.045em}
    .section-head p{max-width:510px;margin:0;color:var(--muted);line-height:1.9}
    .guide-layout{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start}
    .guide-index{
      position:sticky;top:102px;padding:21px;border:1px solid var(--line);border-radius:18px;
      background:rgba(11,29,47,.68);box-shadow:var(--shadow)
    }
    .guide-index h3{font-size:16px;margin-bottom:16px}
    .guide-index a{
      display:flex;gap:12px;align-items:flex-start;padding:13px 10px;
      color:var(--muted);border-top:1px solid rgba(162,205,234,.11);font-size:14px;transition:var(--ease)
    }
    .guide-index a:first-of-type{border-top:0}
    .guide-index a:hover{color:var(--text);padding-left:15px}
    .guide-index b{color:var(--cyan);font-size:12px}
    .guide-content{display:grid;gap:18px}
    .guide-card{
      position:relative;padding:28px 30px;border:1px solid var(--line);border-radius:var(--radius);
      background:linear-gradient(135deg,rgba(17,42,66,.83),rgba(8,24,42,.7));
      overflow:hidden;transition:var(--ease)
    }
    .guide-card:hover{border-color:var(--line-bright);transform:translateY(-3px);box-shadow:0 17px 42px rgba(0,0,0,.22),0 0 25px rgba(91,232,240,.08)}
    .guide-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(var(--cyan),var(--violet))}
    .guide-card-head{display:flex;justify-content:space-between;gap:20px;align-items:start}
    .guide-card .index{color:var(--amber);font-size:12px;letter-spacing:.12em}
    .guide-card h3{margin:5px 0 10px;font-size:23px;line-height:1.35}
    .guide-card p{color:var(--muted);margin-bottom:15px}
    .guide-card ul{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 24px;padding:0;margin:0;list-style:none}
    .guide-card li{position:relative;padding-left:21px;color:#d8e7f0;font-size:14px}
    .guide-card li:before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
    .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
    .tag{display:inline-flex;padding:5px 10px;border-radius:999px;border:1px solid var(--line);color:var(--muted);background:rgba(80,122,157,.08);font-size:12px}
    .decision-section{background:linear-gradient(180deg,rgba(12,29,48,.18),rgba(16,47,71,.32));border-top:1px solid rgba(162,205,234,.08);border-bottom:1px solid rgba(162,205,234,.08)}
    .decision-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:stretch}
    .decision-main{
      padding:35px;border:1px solid var(--line);border-radius:24px;
      background:rgba(10,29,48,.78);box-shadow:var(--shadow)
    }
    .decision-main h2{font-size:31px;line-height:1.3;margin:12px 0 16px}
    .decision-main>p{color:var(--muted);max-width:690px}
    .check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:28px 0}
    .check-item{display:flex;gap:13px;padding:16px;border:1px solid rgba(162,205,234,.13);border-radius:14px;background:rgba(17,44,67,.4)}
    .check-item .check{flex:none;width:25px;height:25px;border-radius:8px;display:grid;place-items:center;background:rgba(84,217,174,.14);color:var(--green)}
    .check-item strong{display:block;font-size:15px;margin-bottom:3px}
    .check-item span{color:var(--muted);font-size:13px;line-height:1.6}
    .decision-side{
      padding:31px;border-radius:24px;border:1px solid rgba(91,232,240,.32);
      background:linear-gradient(145deg,rgba(26,73,102,.7),rgba(27,28,71,.75));
      box-shadow:0 0 38px rgba(59,150,196,.13)
    }
    .decision-side h3{font-size:24px;line-height:1.35;margin:9px 0 13px}
    .decision-side p{color:#c8dce8;font-size:14px}
    .mini-result{padding:17px 0;border-top:1px solid rgba(207,240,255,.18);display:flex;justify-content:space-between;gap:16px}
    .mini-result strong{font-size:17px}
    .mini-result span{color:var(--cyan);font-size:13px;text-align:right}
    .faq-grid{display:grid;grid-template-columns:.72fr 1.28fr;gap:60px;align-items:start}
    .faq-intro h2{font-size:38px;line-height:1.25;margin:12px 0 16px}
    .faq-intro p{color:var(--muted);line-height:1.9}
    .faq-list{border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line);padding:4px 0}
    summary{
      position:relative;list-style:none;cursor:pointer;padding:20px 42px 20px 0;
      font-size:17px;font-weight:750;transition:var(--ease)
    }
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";position:absolute;right:4px;color:var(--cyan);font-size:23px;font-weight:400}
    details[open] summary:after{content:"－"}
    details[open] summary{color:var(--cyan)}
    details p{max-width:760px;color:var(--muted);font-size:14px;line-height:1.9;padding:0 35px 21px 0;margin:0}
    .cta{
      position:relative;overflow:hidden;padding:68px 0;
      background:linear-gradient(115deg,#143d5b,#182860 58%,#261f59);
      border-top:1px solid rgba(91,232,240,.28);border-bottom:1px solid rgba(91,232,240,.18)
    }
    .cta:before{
      content:"";position:absolute;width:450px;height:450px;right:-90px;top:-220px;
      border-radius:50%;background:rgba(91,232,240,.12);filter:blur(5px)
    }
    .cta-inner{position:relative;display:grid;grid-template-columns:1fr .92fr;gap:50px;align-items:center}
    .cta h2{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-.04em;margin:12px 0 15px}
    .cta p{max-width:600px;color:#c4d9e6;margin:0}
    .consult-form{
      display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:23px;
      border:1px solid rgba(198,239,255,.22);border-radius:20px;background:rgba(5,20,37,.48);
      backdrop-filter:blur(12px)
    }
    .field{display:flex;flex-direction:column;gap:5px}
    .field.full{grid-column:1/-1}
    .field label{font-size:12px;color:#c4d9e6}
    .field input,.field select,.field textarea{
      width:100%;border:1px solid rgba(162,205,234,.2);border-radius:10px;
      color:var(--text);background:rgba(8,25,42,.72);padding:10px 12px;outline:none;transition:var(--ease)
    }
    .field textarea{min-height:78px;resize:vertical}
    .field input::placeholder,.field textarea::placeholder{color:#71879d}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(91,232,240,.12)}
    .field.error input,.field.error select{border-color:var(--danger)}
    .error-text{display:none;color:#ff9c8f;font-size:11px}
    .field.error .error-text{display:block}
    .form-submit{grid-column:1/-1;display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:3px}
    .form-message{font-size:13px;color:var(--green);display:none}
    .form-message.show{display:block}
    .btn[disabled]{cursor:not-allowed;opacity:.5;filter:grayscale(.4);box-shadow:none}
    .empty-state{
      margin-top:15px;padding:14px 16px;border:1px dashed rgba(162,205,234,.25);border-radius:11px;
      color:var(--muted);font-size:13px;display:none;background:rgba(6,19,34,.5)
    }
    .empty-state.show{display:block}
    .footer{padding:58px 0 22px;background:#040b15;border-top:1px solid rgba(162,205,234,.12)}
    .footer-top{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:34px;padding-bottom:44px}
    .footer .brand{margin-bottom:15px}
    .footer p{max-width:370px;color:var(--dim);font-size:13px;line-height:1.9}
    .footer h3{font-size:14px;margin:4px 0 15px;color:#d9e9f3}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:var(--dim);font-size:13px;transition:var(--ease)}
    .footer-links a:hover{color:var(--cyan);padding-left:3px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid rgba(162,205,234,.12);color:var(--dim);font-size:12px}
    .footer-records{display:flex;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .footer-records a:hover{color:var(--cyan)}
    .mobile-panel{display:none}
    @media(max-width:1100px){
      .nav{gap:12px}.nav-links a{padding-left:7px;padding-right:7px}.search{width:155px}
      .hero-layout{gap:38px}.guide-layout{grid-template-columns:230px 1fr}
    }
    @media(max-width:900px){
      .nav-links{display:none}.search{width:180px}.menu-btn{display:grid}
      .mobile-panel{
        position:absolute;top:76px;left:0;right:0;padding:18px 24px 26px;
        background:rgba(5,15,28,.97);border-bottom:1px solid var(--line);
        box-shadow:var(--shadow)
      }
      .mobile-panel.open{display:grid;gap:5px}
      .mobile-panel a{padding:12px 10px;border-bottom:1px solid rgba(162,205,234,.1);color:var(--muted)}
      .mobile-panel a.active{color:var(--cyan)}
      .hero-layout,.decision-grid,.cta-inner{grid-template-columns:1fr}
      .page-hero{min-height:auto}.hero-visual{min-height:330px}
      .visual-frame{inset:20px 25px 0 25px}.visual-panel{left:8px}
      .guide-layout{grid-template-columns:1fr}.guide-index{position:static;display:flex;gap:6px;overflow:auto;padding:10px}
      .guide-index h3{display:none}.guide-index a{min-width:150px;border:0;border-right:1px solid rgba(162,205,234,.12);padding:9px 14px}
      .faq-grid{grid-template-columns:1fr;gap:30px}.footer-top{grid-template-columns:1.4fr 1fr 1fr}
      .footer-top>div:last-child{grid-column:2}
    }
    @media(max-width:620px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .nav{height:68px}.site-header .nav-tools{gap:6px}.search{width:42px;padding:0 11px}.search input,.search .key{display:none}
      .nav-cta{display:none}.mobile-panel{top:68px}
      .brand{font-size:19px}.brand-mark{width:30px;height:30px}
      .hero-layout{padding:58px 0 65px}.breadcrumb{margin-bottom:16px}
      h1{font-size:39px}.hero-summary{font-size:15px;line-height:1.85}
      .hero-visual{min-height:270px}.visual-frame{inset:17px 4px 0 13px}.visual-panel{bottom:10px;width:210px;padding:15px}.visual-panel strong{font-size:19px}.visual-note{right:0}
      .section{padding:72px 0}.section-head{display:block;margin-bottom:28px}.section-head p{margin-top:15px}
      .guide-card{padding:23px 22px}.guide-card-head{display:block}.guide-card h3{font-size:21px}.guide-card ul,.check-list{grid-template-columns:1fr}
      .decision-main,.decision-side{padding:24px}.decision-main h2{font-size:27px}
      .faq-intro h2{font-size:31px}
      .cta{padding:52px 0}.consult-form{grid-template-columns:1fr;padding:17px}.field.full,.form-submit{grid-column:auto}
      .footer{padding-top:44px}.footer-top{grid-template-columns:1fr 1fr;gap:28px}.footer-top>div:first-child{grid-column:1/-1}.footer-top>div:last-child{grid-column:auto}
      .footer-bottom{display:block}.footer-records{justify-content:flex-start;margin-top:12px;gap:9px}
    }