/* roulang page: index */
:root{
      --bg-0:#050814;
      --bg-1:#07111f;
      --bg-2:#0a1930;
      --panel:rgba(255,255,255,.075);
      --panel-strong:rgba(255,255,255,.11);
      --line:rgba(92,225,230,.22);
      --line-strong:rgba(92,225,230,.48);
      --text:#eef8ff;
      --muted:#9fb3c9;
      --muted-2:#6f849d;
      --cyan:#21d4fd;
      --blue:#2f80ed;
      --ice:#5ce1e6;
      --warm:#e8b7a2;
      --gold:#d8b68a;
      --shadow:0 24px 80px rgba(0,0,0,.38);
      --glow:0 0 34px rgba(33,212,253,.22);
      --radius-xl:32px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:14px;
      --nav-h:132px;
      --font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      line-height:1.78;
      background:
        radial-gradient(circle at 12% 8%, rgba(33,212,253,.18), transparent 32%),
        radial-gradient(circle at 78% 4%, rgba(47,128,237,.18), transparent 28%),
        radial-gradient(circle at 60% 82%, rgba(232,183,162,.08), transparent 30%),
        linear-gradient(145deg,var(--bg-0),var(--bg-1) 46%,var(--bg-2));
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.18;
      z-index:-1;
      background-image:
        linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.2));
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.08;
      z-index:-1;
      background:
        repeating-linear-gradient(90deg, transparent 0 10px, rgba(255,255,255,.08) 10px 11px),
        repeating-linear-gradient(0deg, transparent 0 5px, rgba(255,255,255,.04) 5px 6px);
      mix-blend-mode:screen;
    }
    a{color:inherit;text-decoration:none;transition:.22s ease}
    a:hover{color:var(--ice)}
    img{max-width:100%;height:auto}
    button,input,textarea{font:inherit}
    ::selection{background:rgba(33,212,253,.28);color:#fff}
    .site-wrap{min-height:100vh;position:relative}
    .container-fluid-custom,.container-custom{
      width:min(100% - 32px, 1220px);
      margin-inline:auto;
    }
    .glass{
      background:linear-gradient(145deg, rgba(255,255,255,.105), rgba(255,255,255,.045));
      border:1px solid rgba(255,255,255,.12);
      box-shadow:var(--shadow);
      backdrop-filter:blur(18px);
    }
    .top-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(5,8,20,.72);
      backdrop-filter:blur(22px);
      border-bottom:1px solid rgba(92,225,230,.16);
      box-shadow:0 16px 50px rgba(0,0,0,.22);
    }
    .nav-main{
      min-height:76px;
      display:flex;
      align-items:center;
      gap:22px;
      padding:14px 0 10px;
    }
    .brand-logo{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
      font-weight:800;
      letter-spacing:.02em;
      color:#fff;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      background:
        radial-gradient(circle at 30% 25%, rgba(255,255,255,.95), transparent 8%),
        conic-gradient(from 20deg, var(--cyan), var(--blue), rgba(232,183,162,.68), var(--cyan));
      box-shadow:0 0 28px rgba(33,212,253,.32);
      position:relative;
      flex:0 0 auto;
    }
    .brand-mark:after{
      content:"";
      width:22px;
      height:22px;
      border-radius:50%;
      border:3px solid rgba(5,8,20,.88);
      box-shadow:inset 0 0 0 4px rgba(255,255,255,.18);
    }
    .brand-text{font-size:18px;line-height:1.2}
    .nav-search{
      flex:1;
      max-width:450px;
      position:relative;
      margin-left:auto;
    }
    .nav-search input{
      width:100%;
      min-height:44px;
      border-radius:999px;
      border:1px solid rgba(92,225,230,.2);
      color:var(--text);
      background:rgba(255,255,255,.055);
      padding:0 46px 0 18px;
      outline:none;
      transition:.22s ease;
    }
    .nav-search input::placeholder{color:#7890aa}
    .nav-search input:focus{
      border-color:var(--ice);
      box-shadow:0 0 0 4px rgba(33,212,253,.12), var(--glow);
      background:rgba(255,255,255,.085);
    }
    .nav-search span{
      position:absolute;
      right:16px;
      top:50%;
      transform:translateY(-50%);
      color:var(--ice);
      font-size:18px;
    }
    .btn{
      border:0;
      min-height:44px;
      padding:.76rem 1.22rem;
      border-radius:999px;
      font-weight:700;
      letter-spacing:.01em;
      transition:.24s ease;
    }
    .btn-primary-glow{
      color:#fff !important;
      background:linear-gradient(135deg,var(--cyan),var(--blue));
      box-shadow:0 14px 34px rgba(33,212,253,.24), inset 0 1px 0 rgba(255,255,255,.28);
    }
    .btn-primary-glow:hover{
      transform:translateY(-2px);
      box-shadow:0 18px 46px rgba(33,212,253,.36), inset 0 1px 0 rgba(255,255,255,.32);
      filter:saturate(1.08);
    }
    .btn-ghost{
      color:var(--text) !important;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(92,225,230,.28);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
    }
    .btn-ghost:hover{
      transform:translateY(-2px);
      border-color:rgba(92,225,230,.65);
      background:rgba(33,212,253,.12);
      box-shadow:var(--glow);
    }
    .btn:focus-visible,a:focus-visible,input:focus-visible,.accordion-button:focus-visible{
      outline:3px solid rgba(92,225,230,.5);
      outline-offset:3px;
      box-shadow:0 0 0 5px rgba(33,212,253,.12);
    }
    .channel-row{
      border-top:1px solid rgba(255,255,255,.07);
      padding:9px 0 12px;
      position:relative;
    }
    .channel-scroll{
      display:flex;
      gap:10px;
      overflow-x:auto;
      scrollbar-width:none;
      padding-bottom:2px;
    }
    .channel-scroll::-webkit-scrollbar{display:none}
    .channel-link{
      flex:0 0 auto;
      min-height:38px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:999px;
      padding:8px 16px;
      color:#bcd0e5;
      background:rgba(255,255,255,.035);
      border:1px solid transparent;
      font-size:14px;
      font-weight:700;
      position:relative;
    }
    .channel-link:hover{
      color:#fff;
      background:rgba(33,212,253,.1);
      border-color:rgba(92,225,230,.28);
    }
    .channel-link.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(33,212,253,.2), rgba(47,128,237,.16));
      border-color:rgba(92,225,230,.45);
      box-shadow:0 0 22px rgba(33,212,253,.16);
    }
    .channel-link.active:after{
      content:"";
      position:absolute;
      left:18px;
      right:18px;
      bottom:-12px;
      height:2px;
      background:linear-gradient(90deg, transparent, var(--ice), transparent);
      box-shadow:0 0 16px rgba(33,212,253,.8);
    }
    .mobile-menu-btn{
      display:none;
      width:46px;
      height:46px;
      border-radius:15px;
      border:1px solid rgba(92,225,230,.25);
      color:#fff;
      background:rgba(255,255,255,.06);
    }
    .offcanvas{
      background:rgba(5,8,20,.96);
      color:var(--text);
      border-left:1px solid rgba(92,225,230,.18);
      backdrop-filter:blur(18px);
    }
    .offcanvas .btn-close{filter:invert(1);opacity:.75}
    main{position:relative}
    .section{
      padding:92px 0;
      position:relative;
    }
    .hero{
      padding:92px 0 64px;
      min-height:calc(100vh - var(--nav-h));
      display:flex;
      align-items:center;
      overflow:hidden;
    }
    .hero:before{
      content:"";
      position:absolute;
      width:560px;
      height:560px;
      border-radius:50%;
      right:-170px;
      top:40px;
      background:radial-gradient(circle, rgba(33,212,253,.18), transparent 62%);
      pointer-events:none;
    }
    .hero:after{
      content:"";
      position:absolute;
      width:420px;
      height:420px;
      border-radius:50%;
      left:-160px;
      bottom:-70px;
      background:radial-gradient(circle, rgba(232,183,162,.1), transparent 65%);
      pointer-events:none;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      border:1px solid rgba(92,225,230,.3);
      background:rgba(33,212,253,.08);
      color:#c8f9ff;
      font-size:13px;
      font-weight:700;
      margin-bottom:20px;
    }
    .eyebrow:before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--ice);
      box-shadow:0 0 14px rgba(92,225,230,.85);
    }
    h1,h2,h3{color:#fff;margin:0;letter-spacing:-.03em}
    h1{
      font-size:clamp(34px,5vw,58px);
      line-height:1.14;
      font-weight:900;
      max-width:720px;
    }
    .gradient-text{
      background:linear-gradient(135deg,#fff 5%,#bdf9ff 42%,#7bb2ff 82%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-lead{
      color:#bdd0e4;
      font-size:18px;
      max-width:660px;
      margin:22px 0 0;
    }
    .hero-actions{
      display:flex;
      gap:14px;
      flex-wrap:wrap;
      margin-top:32px;
    }
    .trust-row{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:30px;
    }
    .trust-badge{
      display:flex;
      align-items:center;
      gap:9px;
      padding:10px 13px;
      border-radius:999px;
      color:#d8e7f7;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.1);
      font-size:14px;
    }
    .trust-badge i{
      width:18px;
      height:18px;
      display:inline-grid;
      place-items:center;
      color:var(--ice);
      font-style:normal;
    }
    .kv-card{
      min-height:560px;
      border-radius:var(--radius-xl);
      position:relative;
      overflow:hidden;
      padding:26px;
    }
    .kv-card:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 72% 22%, rgba(92,225,230,.26), transparent 24%),
        radial-gradient(circle at 30% 78%, rgba(232,183,162,.12), transparent 30%),
        linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.02));
      pointer-events:none;
    }
    .lens{
      position:absolute;
      width:292px;
      height:292px;
      border-radius:50%;
      right:44px;
      top:54px;
      border:1px solid rgba(92,225,230,.35);
      background:
        radial-gradient(circle at 42% 38%, rgba(255,255,255,.7), transparent 4%),
        radial-gradient(circle, rgba(33,212,253,.12) 0 28%, transparent 29% 36%, rgba(92,225,230,.09) 37% 52%, transparent 53%),
        conic-gradient(from 30deg, rgba(33,212,253,.26), rgba(47,128,237,.06), rgba(232,183,162,.13), rgba(33,212,253,.26));
      box-shadow:0 0 80px rgba(33,212,253,.18), inset 0 0 50px rgba(0,0,0,.25);
    }
    .lens:before,.lens:after{
      content:"";
      position:absolute;
      inset:34px;
      border-radius:50%;
      border:1px solid rgba(255,255,255,.12);
    }
    .lens:after{inset:76px;border-color:rgba(92,225,230,.28)}
    .silhouette{
      position:absolute;
      left:50px;
      bottom:60px;
      width:250px;
      height:380px;
      border-radius:48% 48% 28% 28%;
      background:
        linear-gradient(90deg, rgba(7,17,31,.98), rgba(11,30,55,.66) 56%, rgba(255,255,255,.05)),
        radial-gradient(circle at 54% 16%, rgba(255,255,255,.12), transparent 20%);
      filter:blur(.1px);
      box-shadow:28px 0 70px rgba(33,212,253,.12);
      opacity:.86;
    }
    .silhouette:before{
      content:"";
      position:absolute;
      width:118px;
      height:118px;
      border-radius:50%;
      left:66px;
      top:-70px;
      background:linear-gradient(145deg, rgba(10,25,48,.95), rgba(255,255,255,.05));
      border:1px solid rgba(255,255,255,.08);
    }
    .veil{
      position:absolute;
      inset:36px 22px 38px auto;
      width:58%;
      transform:skewX(-8deg);
      background:linear-gradient(90deg, transparent, rgba(255,255,255,.08), transparent);
      border-left:1px solid rgba(255,255,255,.12);
      border-right:1px solid rgba(255,255,255,.08);
      opacity:.78;
      pointer-events:none;
    }
    .film-strip{
      position:absolute;
      left:26px;
      right:26px;
      bottom:22px;
      height:78px;
      border-radius:20px;
      background:rgba(3,9,18,.58);
      border:1px solid rgba(92,225,230,.18);
      display:grid;
      grid-template-columns:repeat(5,1fr);
      gap:10px;
      padding:10px;
    }
    .film-frame{
      border-radius:13px;
      background:
        radial-gradient(circle at 30% 25%, rgba(92,225,230,.26), transparent 34%),
        linear-gradient(135deg, rgba(255,255,255,.11), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.1);
      position:relative;
      overflow:hidden;
    }
    .film-frame:after{
      content:"";
      position:absolute;
      inset:12px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.08);
    }
    .float-note{
      position:absolute;
      left:24px;
      top:28px;
      width:min(280px, 70%);
      border-radius:22px;
      padding:16px;
      background:rgba(5,8,20,.66);
      border:1px solid rgba(92,225,230,.22);
      backdrop-filter:blur(14px);
      box-shadow:0 18px 46px rgba(0,0,0,.3);
    }
    .float-note strong{display:block;color:#fff;margin-bottom:5px}
    .float-note span{color:var(--muted);font-size:13px;line-height:1.55;display:block}
    .progress-lane{
      margin-top:38px;
      border-radius:26px;
      padding:20px;
      display:grid;
      grid-template-columns:repeat(5,1fr);
      gap:12px;
      position:relative;
      overflow:hidden;
    }
    .progress-lane:before{
      content:"";
      position:absolute;
      left:40px;
      right:40px;
      top:38px;
      height:1px;
      background:linear-gradient(90deg,rgba(92,225,230,.1),rgba(92,225,230,.55),rgba(92,225,230,.1));
    }
    .stage{
      position:relative;
      z-index:1;
      text-align:center;
      color:#c9d8e8;
      font-weight:700;
      font-size:14px;
    }
    .stage-dot{
      width:36px;
      height:36px;
      margin:0 auto 10px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,rgba(33,212,253,.28),rgba(47,128,237,.2));
      border:1px solid rgba(92,225,230,.5);
      box-shadow:0 0 22px rgba(33,212,253,.18);
      color:#fff;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:24px;
      margin-bottom:34px;
    }
    .section-kicker{
      color:var(--ice);
      font-size:14px;
      font-weight:800;
      margin-bottom:8px;
    }
    h2{
      font-size:clamp(26px,3.4vw,38px);
      line-height:1.2;
      font-weight:880;
    }
    .section-desc{
      color:var(--muted);
      max-width:620px;
      margin:12px 0 0;
      font-size:16px;
    }
    .timeline{
      display:grid;
      grid-template-columns:repeat(5,1fr);
      gap:16px;
      align-items:stretch;
    }
    .step-card{
      border-radius:var(--radius-lg);
      padding:24px 20px;
      min-height:230px;
      position:relative;
      overflow:hidden;
      transition:.24s ease;
    }
    .step-card:nth-child(even){transform:translateY(24px)}
    .step-card:hover{
      transform:translateY(-4px);
      border-color:rgba(92,225,230,.42);
      background:linear-gradient(145deg, rgba(255,255,255,.13), rgba(255,255,255,.055));
      box-shadow:0 28px 70px rgba(0,0,0,.38), var(--glow);
    }
    .step-card:nth-child(even):hover{transform:translateY(18px)}
    .step-num{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      border-radius:15px;
      background:rgba(33,212,253,.12);
      border:1px solid rgba(92,225,230,.3);
      color:#d9fbff;
      font-weight:900;
      margin-bottom:18px;
    }
    h3{
      font-size:21px;
      line-height:1.35;
      font-weight:820;
      margin-bottom:10px;
    }
    .card-text{color:var(--muted);font-size:15px;margin:0}
    .benefit-layout{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:18px;
      align-items:stretch;
    }
    .feature-large{
      border-radius:var(--radius-xl);
      padding:32px;
      min-height:440px;
      position:relative;
      overflow:hidden;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .feature-large:after{
      content:"";
      position:absolute;
      width:330px;
      height:330px;
      border-radius:50%;
      right:-80px;
      bottom:-80px;
      border:1px solid rgba(92,225,230,.22);
      box-shadow:inset 0 0 70px rgba(33,212,253,.1), 0 0 70px rgba(33,212,253,.12);
    }
    .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
    .tag{
      border-radius:999px;
      padding:7px 11px;
      color:#d8f9ff;
      background:rgba(33,212,253,.09);
      border:1px solid rgba(92,225,230,.22);
      font-size:13px;
      font-weight:700;
    }
    .benefit-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .mini-card,.style-card,.prep-card,.proof-card{
      border-radius:var(--radius-lg);
      padding:22px;
      transition:.24s ease;
      position:relative;
      overflow:hidden;
    }
    .mini-card:hover,.style-card:hover,.prep-card:hover,.proof-card:hover{
      transform:translateY(-4px);
      border-color:rgba(92,225,230,.46);
      box-shadow:0 24px 60px rgba(0,0,0,.34), var(--glow);
      background:linear-gradient(145deg, rgba(255,255,255,.125), rgba(255,255,255,.052));
    }
    .icon-line{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,rgba(33,212,253,.18),rgba(47,128,237,.15));
      border:1px solid rgba(92,225,230,.25);
      margin-bottom:14px;
      font-weight:900;
    }
    .prep-panel{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:20px;
      align-items:stretch;
    }
    .progress-card{
      border-radius:var(--radius-xl);
      padding:28px;
    }
    .meter{
      height:12px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      overflow:hidden;
      margin:22px 0;
      border:1px solid rgba(255,255,255,.08);
    }
    .meter span{
      display:block;
      width:72%;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--cyan),var(--blue));
      box-shadow:0 0 22px rgba(33,212,253,.4);
    }
    .check-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
    }
    .check-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      color:#cfdeef;
      padding:13px 14px;
      border-radius:17px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.08);
    }
    .check-list b{
      flex:0 0 auto;
      width:22px;
      height:22px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(33,212,253,.14);
      color:var(--ice);
      font-size:13px;
      border:1px solid rgba(92,225,230,.28);
    }
    .prep-stats{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
      margin-top:18px;
    }
    .stat{
      border-radius:20px;
      padding:18px;
      background:rgba(255,255,255,.052);
      border:1px solid rgba(255,255,255,.08);
    }
    .stat strong{
      display:block;
      color:#fff;
      font-size:28px;
      line-height:1.1;
      margin-bottom:6px;
    }
    .stat span{color:var(--muted);font-size:13px}
    .style-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr 1fr;
      gap:18px;
    }
    .style-card{
      min-height:250px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .style-card.tall{min-height:330px}
    .abstract-thumb{
      height:140px;
      border-radius:22px;
      margin-bottom:18px;
      overflow:hidden;
      border:1px solid rgba(92,225,230,.16);
      background:
        radial-gradient(circle at 26% 28%, rgba(92,225,230,.22), transparent 26%),
        linear-gradient(135deg, rgba(255,255,255,.1), rgba(255,255,255,.025));
      position:relative;
    }
    .abstract-thumb:before{
      content:"";
      position:absolute;
      inset:18px;
      border-radius:50%;
      border:1px solid rgba(255,255,255,.13);
      transform:translateX(30%);
    }
    .abstract-thumb:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(110deg, transparent 0 34%, rgba(255,255,255,.1) 36% 42%, transparent 45%);
    }
    .proof-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .proof-card{
      min-height:170px;
    }
    .proof-card strong{
      color:#fff;
      font-size:32px;
      display:block;
      line-height:1.1;
      margin:8px 0;
    }
    .faq-wrap{
      max-width:930px;
      margin:0 auto;
    }
    .accordion{
      display:grid;
      gap:14px;
    }
    .accordion-item{
      color:var(--text);
      background:rgba(255,255,255,.065);
      border:1px solid rgba(92,225,230,.16) !important;
      border-radius:22px !important;
      overflow:hidden;
      box-shadow:none;
      backdrop-filter:blur(14px);
    }
    .accordion-button{
      color:#fff;
      background:transparent !important;
      border:0;
      box-shadow:none !important;
      padding:20px 22px;
      font-weight:800;
      line-height:1.55;
    }
    .accordion-button:not(.collapsed){
      color:#eafcff;
      background:rgba(33,212,253,.07) !important;
    }
    .accordion-button::after{
      filter:invert(1) hue-rotate(150deg);
      opacity:.8;
    }
    .accordion-body{
      color:var(--muted);
      padding:0 22px 22px;
    }
    .cta-panel{
      border-radius:36px;
      padding:36px;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:24px;
      align-items:center;
      overflow:hidden;
      position:relative;
    }
    .cta-panel:before{
      content:"";
      position:absolute;
      right:-70px;
      top:-110px;
      width:340px;
      height:340px;
      border-radius:50%;
      border:1px solid rgba(92,225,230,.2);
      background:radial-gradient(circle, rgba(33,212,253,.13), transparent 65%);
    }
    .contact-card{
      border-radius:26px;
      padding:22px;
      background:rgba(3,9,18,.48);
      border:1px solid rgba(92,225,230,.18);
      position:relative;
      z-index:1;
    }
    .form-control,.form-select{
      min-height:48px;
      color:#fff !important;
      background:rgba(255,255,255,.06) !important;
      border:1px solid rgba(92,225,230,.18) !important;
      border-radius:16px;
      box-shadow:none !important;
    }
    .form-control::placeholder{color:#7d92aa}
    .form-control:focus,.form-select:focus{
      border-color:rgba(92,225,230,.62) !important;
      box-shadow:0 0 0 4px rgba(33,212,253,.12) !important;
    }
    .site-footer{
      background:
        radial-gradient(circle at 82% 20%, rgba(33,212,253,.1), transparent 28%),
        linear-gradient(180deg, rgba(5,8,20,.6), #030711);
      border-top:1px solid rgba(92,225,230,.14);
      padding:58px 0 26px;
      position:relative;
      overflow:hidden;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .8fr .9fr 1fr;
      gap:28px;
    }
    .footer-title{
      color:#fff;
      font-weight:850;
      margin-bottom:14px;
      font-size:16px;
    }
    .footer-text,.footer-link,.copyright{
      color:var(--muted);
      font-size:14px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:9px;
    }
    .footer-link:hover{color:#fff}
    .footer-bottom{
      border-top:1px solid rgba(255,255,255,.08);
      margin-top:34px;
      padding-top:20px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    @media (max-width:1199px){
      .timeline{grid-template-columns:repeat(3,1fr)}
      .step-card:nth-child(even){transform:none}
      .step-card:nth-child(even):hover{transform:translateY(-4px)}
      .style-grid{grid-template-columns:1fr 1fr}
      .proof-grid{grid-template-columns:1fr 1fr}
      .kv-card{min-height:500px}
    }
    @media (max-width:991px){
      :root{--nav-h:120px}
      .nav-search{display:none}
      .mobile-menu-btn{display:inline-grid;place-items:center}
      .nav-main{justify-content:space-between}
      .brand-text{font-size:16px}
      .hero{padding:64px 0 44px;min-height:auto}
      .kv-card{margin-top:34px;min-height:440px}
      .progress-lane{grid-template-columns:1fr;gap:10px}
      .progress-lane:before{display:none}
      .stage{display:flex;align-items:center;text-align:left;gap:12px}
      .stage-dot{margin:0}
      .section{padding:70px 0}
      .section-head{display:block}
      .timeline{grid-template-columns:1fr 1fr}
      .benefit-layout,.prep-panel,.cta-panel{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:767px){
      .container-fluid-custom,.container-custom{width:min(100% - 24px, 1220px)}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .nav-main{padding-top:10px}
      .btn{width:auto;min-height:44px;padding:.7rem 1rem}
      .hero-actions .btn{width:100%;justify-content:center}
      .hero-lead{font-size:16px}
      .trust-row{gap:8px}
      .trust-badge{font-size:13px;width:100%;border-radius:18px}
      .kv-card{min-height:370px;padding:18px;border-radius:26px}
      .lens{width:210px;height:210px;right:18px;top:72px}
      .silhouette{width:170px;height:260px;left:28px;bottom:70px}
      .silhouette:before{width:82px;height:82px;left:44px;top:-48px}
      .film-strip{height:64px;gap:6px;left:16px;right:16px;bottom:16px}
      .float-note{left:16px;top:16px}
      .section{padding:58px 0}
      .timeline,.benefit-grid,.style-grid,.proof-grid,.prep-stats{grid-template-columns:1fr}
      .feature-large{min-height:360px;padding:24px}
      .style-card,.style-card.tall{min-height:auto}
      .cta-panel{padding:24px;border-radius:28px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:block}
      .copyright{margin-top:8px}
    }
    @media (max-width:420px){
      h1{font-size:31px}
      h2{font-size:25px}
      .channel-link{padding:8px 13px;font-size:13px}
      .brand-text{max-width:190px}
      .kv-card{min-height:340px}
      .lens{width:178px;height:178px}
      .section-desc{font-size:15px}
      .mini-card,.style-card,.prep-card,.proof-card{padding:18px}
    }

/* roulang page: category1 */
:root{
      --bg:#050814;
      --bg-2:#07111f;
      --bg-3:#0a1930;
      --panel:rgba(255,255,255,.075);
      --panel-strong:rgba(255,255,255,.11);
      --line:rgba(126,220,255,.22);
      --line-strong:rgba(92,225,230,.48);
      --text:#eef8ff;
      --muted:#9fb2c8;
      --soft:#cfe8f5;
      --primary:#21d4fd;
      --primary-2:#2f80ed;
      --cyan:#5ce1e6;
      --warm:#e8b7a2;
      --gold:#d8b68a;
      --radius-xl:32px;
      --radius-lg:24px;
      --radius-md:18px;
      --shadow:0 28px 90px rgba(0,0,0,.42);
      --glow:0 0 34px rgba(33,212,253,.22);
      --nav-h:132px;
      --font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%,rgba(33,212,253,.16),transparent 32%),
        radial-gradient(circle at 88% 4%,rgba(47,128,237,.20),transparent 34%),
        radial-gradient(circle at 68% 78%,rgba(232,183,162,.08),transparent 30%),
        linear-gradient(145deg,var(--bg),var(--bg-2) 48%,#030611);
      line-height:1.78;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-1;
      opacity:.34;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
      background-size:54px 54px;
      mask-image:radial-gradient(circle at 50% 20%,#000 0,transparent 72%);
    }
    body::after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-1;
      opacity:.18;
      background:
        repeating-linear-gradient(90deg,rgba(255,255,255,.06) 0 1px,transparent 1px 8px),
        radial-gradient(circle at 50% 50%,transparent 0 55%,rgba(33,212,253,.08) 56%,transparent 58%);
      mix-blend-mode:screen;
    }
    a{color:inherit;text-decoration:none;transition:color .22s ease,background .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease}
    a:hover{color:#fff}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    ::selection{background:rgba(33,212,253,.35);color:#fff}
    :focus-visible{outline:2px solid rgba(92,225,230,.95);outline-offset:4px;border-radius:14px}
    .container-custom{width:min(1210px,calc(100% - 40px));margin:0 auto}
    .section{padding:86px 0}
    .section-tight{padding:54px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border:1px solid rgba(92,225,230,.24);
      border-radius:999px;
      background:rgba(92,225,230,.075);
      color:#bceff4;
      font-size:13px;
      letter-spacing:.03em;
      line-height:1.2;
    }
    .eyebrow::before{
      content:"";
      width:7px;height:7px;border-radius:50%;
      background:var(--cyan);
      box-shadow:0 0 14px rgba(92,225,230,.9);
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:28px;
    }
    .section-title{
      font-size:clamp(26px,3vw,38px);
      line-height:1.18;
      margin:12px 0 0;
      letter-spacing:-.02em;
    }
    .section-desc{
      margin:10px 0 0;
      color:var(--muted);
      max-width:660px;
      font-size:16px;
    }
    .btn-main,.btn-ghost{
      min-height:46px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:12px 20px;
      border-radius:999px;
      font-weight:650;
      border:1px solid transparent;
      line-height:1.2;
      transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
    }
    .btn-main{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 14px 38px rgba(33,212,253,.24),inset 0 1px 0 rgba(255,255,255,.34);
    }
    .btn-main:hover{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 20px 52px rgba(33,212,253,.34),inset 0 1px 0 rgba(255,255,255,.42);
    }
    .btn-ghost{
      color:#d7f9ff;
      border-color:rgba(92,225,230,.32);
      background:rgba(255,255,255,.055);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
    }
    .btn-ghost:hover{
      color:#fff;
      background:rgba(33,212,253,.12);
      border-color:rgba(92,225,230,.62);
      transform:translateY(-2px);
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(5,8,20,.72);
      backdrop-filter:blur(22px);
      border-bottom:1px solid rgba(126,220,255,.14);
      box-shadow:0 18px 60px rgba(0,0,0,.22);
    }
    .topbar{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
      min-height:76px;
      padding:14px 0 10px;
    }
    .brand-logo{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:16px;
      background:
        radial-gradient(circle at 35% 30%,#fff 0 5%,transparent 6%),
        conic-gradient(from 140deg,var(--primary),var(--primary-2),#0b1b35,var(--cyan),var(--primary));
      box-shadow:0 0 30px rgba(33,212,253,.32),inset 0 0 0 1px rgba(255,255,255,.2);
      position:relative;
      flex:0 0 auto;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:10px;
      border-radius:50%;
      border:1px solid rgba(255,255,255,.42);
      box-shadow:inset 0 0 18px rgba(0,0,0,.45);
    }
    .brand-text{
      font-size:18px;
      font-weight:760;
      letter-spacing:-.02em;
      color:#fff;
      white-space:nowrap;
    }
    .nav-search{
      flex:1;
      max-width:430px;
      position:relative;
    }
    .nav-search input{
      width:100%;
      height:44px;
      border-radius:999px;
      border:1px solid rgba(126,220,255,.18);
      background:rgba(255,255,255,.065);
      color:var(--text);
      padding:0 44px 0 18px;
      outline:none;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.07);
      transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
    }
    .nav-search input::placeholder{color:#7890a7}
    .nav-search input:focus{
      border-color:rgba(92,225,230,.72);
      background:rgba(255,255,255,.09);
      box-shadow:0 0 0 4px rgba(33,212,253,.12),inset 0 1px 0 rgba(255,255,255,.12);
    }
    .nav-search .search-dot{
      position:absolute;
      right:16px;
      top:50%;
      width:12px;
      height:12px;
      transform:translateY(-50%);
      border:2px solid rgba(92,225,230,.78);
      border-radius:50%;
    }
    .nav-search .search-dot::after{
      content:"";
      width:7px;height:2px;
      background:rgba(92,225,230,.78);
      position:absolute;
      right:-6px;bottom:-3px;
      transform:rotate(45deg);
      border-radius:999px;
    }
    .channel-row{
      position:relative;
      padding:0 0 14px;
    }
    .channel-scroll{
      display:flex;
      gap:10px;
      overflow-x:auto;
      scrollbar-width:none;
      padding:2px 0;
    }
    .channel-scroll::-webkit-scrollbar{display:none}
    .channel-row::after{
      content:"";
      position:absolute;
      right:0;top:0;bottom:12px;
      width:70px;
      pointer-events:none;
      background:linear-gradient(90deg,transparent,rgba(5,8,20,.92));
    }
    .channel-link{
      position:relative;
      flex:0 0 auto;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:38px;
      padding:8px 16px;
      border:1px solid rgba(126,220,255,.15);
      border-radius:999px;
      color:#afc2d5;
      background:rgba(255,255,255,.035);
      font-size:14px;
      font-weight:620;
    }
    .channel-link:hover{
      color:#fff;
      background:rgba(33,212,253,.10);
      border-color:rgba(92,225,230,.36);
    }
    .channel-link.active{
      color:#fff;
      border-color:rgba(92,225,230,.68);
      background:linear-gradient(135deg,rgba(33,212,253,.24),rgba(47,128,237,.15));
      box-shadow:0 0 24px rgba(33,212,253,.20),inset 0 1px 0 rgba(255,255,255,.16);
    }
    .channel-link.active::after{
      content:"";
      position:absolute;
      left:20px;right:20px;bottom:-7px;height:2px;
      border-radius:999px;
      background:var(--cyan);
      box-shadow:0 0 12px rgba(92,225,230,.9);
    }

    .category-hero{
      position:relative;
      padding:58px 0 42px;
      overflow:hidden;
    }
    .category-hero::before{
      content:"";
      position:absolute;
      inset:0;
      pointer-events:none;
      background:
        radial-gradient(circle at 78% 14%,rgba(33,212,253,.18),transparent 30%),
        radial-gradient(circle at 82% 80%,rgba(216,182,138,.08),transparent 28%);
    }
    .breadcrumb-line{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      color:#8ea8bf;
      font-size:14px;
      margin-bottom:18px;
    }
    .breadcrumb-line a{color:#b7d8e9}
    .breadcrumb-line a:hover{color:#fff}
    .breadcrumb-line span:last-child{color:#defaff}
    .category-hero h1{
      font-size:clamp(32px,5vw,54px);
      line-height:1.12;
      letter-spacing:-.04em;
      margin:14px 0 18px;
      max-width:830px;
    }
    .hero-lead{
      max-width:760px;
      color:#b8c9da;
      font-size:17px;
      margin:0;
    }
    .hero-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin-top:26px;
    }
    .filter-panel{
      height:100%;
      border:1px solid rgba(126,220,255,.20);
      background:linear-gradient(150deg,rgba(255,255,255,.10),rgba(255,255,255,.045));
      border-radius:var(--radius-xl);
      padding:24px;
      box-shadow:var(--shadow),var(--glow);
      position:relative;
      overflow:hidden;
    }
    .filter-panel::before{
      content:"";
      position:absolute;
      width:220px;height:220px;
      border:1px solid rgba(92,225,230,.20);
      border-radius:50%;
      right:-70px;top:-70px;
      box-shadow:inset 0 0 30px rgba(33,212,253,.08);
    }
    .panel-title{
      font-size:18px;
      font-weight:760;
      margin-bottom:14px;
      position:relative;
    }
    .mini-check{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
      position:relative;
    }
    .mini-check li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#c4d4e4;
      font-size:14px;
      padding:10px 12px;
      border-radius:16px;
      background:rgba(0,0,0,.16);
      border:1px solid rgba(255,255,255,.07);
    }
    .mini-check li::before{
      content:"";
      flex:0 0 auto;
      width:18px;height:18px;
      border-radius:50%;
      margin-top:3px;
      background:radial-gradient(circle,var(--cyan) 0 34%,rgba(92,225,230,.12) 36% 100%);
      box-shadow:0 0 16px rgba(92,225,230,.38);
    }
    .stat-strip{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:10px;
      margin-top:18px;
    }
    .stat-box{
      border-radius:18px;
      padding:13px 10px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(126,220,255,.13);
      text-align:center;
    }
    .stat-box strong{
      display:block;
      color:#fff;
      font-size:22px;
      line-height:1.1;
    }
    .stat-box span{
      display:block;
      color:#8fa7bd;
      font-size:12px;
      margin-top:4px;
    }

    .topic-tabs-wrap{
      position:sticky;
      top:132px;
      z-index:20;
      background:linear-gradient(180deg,rgba(5,8,20,.92),rgba(5,8,20,.70));
      backdrop-filter:blur(14px);
      border-top:1px solid rgba(126,220,255,.08);
      border-bottom:1px solid rgba(126,220,255,.10);
    }
    .topic-tabs{
      display:flex;
      gap:10px;
      overflow-x:auto;
      scrollbar-width:none;
      padding:14px 0;
    }
    .topic-tabs::-webkit-scrollbar{display:none}
    .topic-tab{
      flex:0 0 auto;
      border:1px solid rgba(126,220,255,.16);
      border-radius:999px;
      background:rgba(255,255,255,.045);
      color:#aabed1;
      padding:10px 15px;
      font-size:14px;
      font-weight:650;
    }
    .topic-tab:hover,.topic-tab.active{
      color:#fff;
      border-color:rgba(92,225,230,.62);
      background:linear-gradient(135deg,rgba(33,212,253,.20),rgba(47,128,237,.10));
      box-shadow:0 0 18px rgba(33,212,253,.15);
    }

    .glass-card{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(126,220,255,.17);
      background:linear-gradient(150deg,rgba(255,255,255,.092),rgba(255,255,255,.045));
      border-radius:var(--radius-lg);
      box-shadow:0 20px 70px rgba(0,0,0,.28);
      transition:transform .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
    }
    .glass-card::before{
      content:"";
      position:absolute;
      inset:auto auto -70px -70px;
      width:160px;height:160px;
      background:radial-gradient(circle,rgba(33,212,253,.16),transparent 68%);
      opacity:.85;
      transition:transform .28s ease,opacity .28s ease;
      pointer-events:none;
    }
    .glass-card:hover{
      transform:translateY(-4px);
      border-color:rgba(92,225,230,.48);
      background:linear-gradient(150deg,rgba(255,255,255,.12),rgba(255,255,255,.058));
      box-shadow:0 26px 80px rgba(0,0,0,.34),0 0 30px rgba(33,212,253,.13);
    }
    .glass-card:hover::before{transform:translate(38px,-34px);opacity:1}
    .tag{
      display:inline-flex;
      align-items:center;
      min-height:26px;
      padding:5px 10px;
      border-radius:999px;
      color:#d9fbff;
      background:rgba(33,212,253,.11);
      border:1px solid rgba(92,225,230,.24);
      font-size:12px;
      font-weight:680;
    }
    .feature-layout{
      display:grid;
      grid-template-columns:minmax(0,1.35fr) minmax(320px,.65fr);
      gap:22px;
    }
    .main-feature{
      min-height:420px;
      padding:28px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .abstract-frame{
      min-height:190px;
      border-radius:26px;
      border:1px solid rgba(255,255,255,.10);
      background:
        radial-gradient(circle at 30% 30%,rgba(92,225,230,.22),transparent 25%),
        radial-gradient(circle at 75% 38%,rgba(216,182,138,.13),transparent 26%),
        linear-gradient(135deg,rgba(255,255,255,.08),rgba(0,0,0,.18)),
        repeating-linear-gradient(90deg,rgba(255,255,255,.08) 0 5px,transparent 5px 20px);
      position:relative;
      overflow:hidden;
      margin-bottom:24px;
    }
    .abstract-frame::before{
      content:"";
      position:absolute;
      width:220px;height:220px;
      left:50%;top:50%;
      transform:translate(-50%,-50%);
      border-radius:50%;
      border:1px solid rgba(92,225,230,.30);
      box-shadow:0 0 50px rgba(33,212,253,.10),inset 0 0 26px rgba(0,0,0,.34);
    }
    .abstract-frame::after{
      content:"";
      position:absolute;
      inset:20px 32px;
      border-radius:42% 58% 46% 54%;
      background:linear-gradient(120deg,transparent,rgba(255,255,255,.09),transparent);
      filter:blur(1px);
      transform:rotate(-8deg);
    }
    .feature-title{
      font-size:clamp(24px,2.5vw,34px);
      line-height:1.22;
      margin:14px 0 10px;
    }
    .feature-text{
      color:#b4c7d9;
      margin:0;
      max-width:720px;
    }
    .feature-meta{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      margin-top:22px;
    }
    .side-list{
      display:grid;
      gap:16px;
    }
    .side-item{
      padding:20px;
      min-height:124px;
    }
    .side-item h3,.grid-card h3,.guide-card h3{
      font-size:19px;
      line-height:1.35;
      margin:12px 0 8px;
    }
    .side-item p,.grid-card p,.guide-card p{
      margin:0;
      color:#aabdd0;
      font-size:15px;
    }
    .card-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:#c9fbff;
      font-weight:700;
      font-size:14px;
      margin-top:16px;
    }
    .card-link:hover{color:#fff;transform:translateX(3px)}
    .mixed-grid{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:18px;
      margin-top:22px;
    }
    .grid-card{
      padding:22px;
      min-height:225px;
    }
    .grid-card:nth-child(1){grid-column:span 5}
    .grid-card:nth-child(2){grid-column:span 4}
    .grid-card:nth-child(3){grid-column:span 3}
    .grid-card:nth-child(4){grid-column:span 4}
    .grid-card:nth-child(5){grid-column:span 5}
    .grid-card:nth-child(6){grid-column:span 3}
    .thumb-line{
      height:84px;
      border-radius:20px;
      margin-bottom:18px;
      border:1px solid rgba(255,255,255,.09);
      background:
        linear-gradient(115deg,rgba(33,212,253,.16),transparent 44%),
        radial-gradient(circle at 80% 20%,rgba(216,182,138,.15),transparent 28%),
        repeating-linear-gradient(90deg,rgba(255,255,255,.06) 0 4px,transparent 4px 16px),
        rgba(0,0,0,.18);
      position:relative;
      overflow:hidden;
    }
    .thumb-line::after{
      content:"";
      position:absolute;
      left:16px;right:16px;top:50%;
      height:1px;
      background:linear-gradient(90deg,transparent,rgba(92,225,230,.6),transparent);
    }

    .topic-banner{
      border-radius:var(--radius-xl);
      border:1px solid rgba(92,225,230,.24);
      background:
        radial-gradient(circle at 82% 52%,rgba(33,212,253,.20),transparent 24%),
        linear-gradient(135deg,rgba(255,255,255,.10),rgba(255,255,255,.04));
      box-shadow:var(--shadow),var(--glow);
      padding:30px;
      overflow:hidden;
      position:relative;
    }
    .topic-banner::before{
      content:"";
      position:absolute;
      right:34px;
      top:50%;
      width:190px;height:190px;
      border-radius:50%;
      transform:translateY(-50%);
      border:16px solid rgba(92,225,230,.12);
      border-top-color:rgba(92,225,230,.52);
      box-shadow:0 0 42px rgba(33,212,253,.15);
    }
    .banner-list{
      list-style:none;
      padding:0;
      margin:18px 0 0;
      display:grid;
      gap:9px;
      color:#bed0df;
    }
    .banner-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
    }
    .banner-list li::before{
      content:"";
      width:9px;height:9px;
      border-radius:50%;
      background:var(--cyan);
      box-shadow:0 0 14px rgba(92,225,230,.8);
      margin-top:10px;
      flex:0 0 auto;
    }

    .process-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .process-card{
      padding:22px;
    }
    .process-num{
      width:42px;height:42px;
      display:grid;
      place-items:center;
      border-radius:16px;
      color:#fff;
      font-weight:800;
      background:linear-gradient(135deg,rgba(33,212,253,.95),rgba(47,128,237,.75));
      box-shadow:0 0 26px rgba(33,212,253,.24);
      margin-bottom:16px;
    }
    .process-card h3{
      font-size:18px;
      margin:0 0 8px;
    }
    .process-card p{
      margin:0;
      color:#aebfd1;
      font-size:15px;
    }
    .guide-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .guide-card{
      padding:22px;
      min-height:180px;
    }
    .guide-card .meta{
      margin-top:14px;
      color:#8199ae;
      font-size:13px;
    }

    .accordion{
      --bs-accordion-bg:transparent;
      --bs-accordion-border-color:transparent;
      --bs-accordion-btn-focus-box-shadow:none;
      display:grid;
      gap:14px;
    }
    .accordion-item{
      border:1px solid rgba(126,220,255,.17)!important;
      background:rgba(255,255,255,.06)!important;
      border-radius:22px!important;
      overflow:hidden;
      box-shadow:0 18px 60px rgba(0,0,0,.22);
    }
    .accordion-button{
      color:#fff!important;
      background:rgba(255,255,255,.035)!important;
      border:none!important;
      box-shadow:none!important;
      padding:19px 22px;
      font-weight:720;
      line-height:1.45;
    }
    .accordion-button::after{
      filter:invert(1) grayscale(1);
      opacity:.78;
    }
    .accordion-button:not(.collapsed){
      background:linear-gradient(135deg,rgba(33,212,253,.14),rgba(47,128,237,.08))!important;
    }
    .accordion-body{
      color:#aebfd1;
      padding:0 22px 21px;
      font-size:15px;
    }

    .cta-panel{
      position:relative;
      overflow:hidden;
      border-radius:34px;
      padding:34px;
      border:1px solid rgba(92,225,230,.28);
      background:
        radial-gradient(circle at 80% 20%,rgba(33,212,253,.22),transparent 25%),
        radial-gradient(circle at 22% 92%,rgba(232,183,162,.10),transparent 25%),
        linear-gradient(135deg,rgba(255,255,255,.12),rgba(255,255,255,.045));
      box-shadow:var(--shadow),var(--glow);
    }
    .cta-panel::before{
      content:"";
      position:absolute;
      inset:18px;
      border-radius:28px;
      border:1px solid rgba(255,255,255,.06);
      pointer-events:none;
    }
    .cta-panel h2{
      font-size:clamp(26px,3vw,38px);
      line-height:1.2;
      margin:12px 0 10px;
    }
    .cta-panel p{
      color:#b7c8d8;
      margin:0;
      max-width:700px;
    }
    .cta-actions{
      display:flex;
      justify-content:flex-end;
      align-items:center;
      gap:12px;
      flex-wrap:wrap;
      height:100%;
    }

    .site-footer{
      margin-top:72px;
      padding:58px 0 26px;
      background:
        radial-gradient(circle at 12% 0,rgba(33,212,253,.10),transparent 28%),
        linear-gradient(180deg,rgba(3,6,17,.55),#02040b);
      border-top:1px solid rgba(126,220,255,.13);
      position:relative;
      overflow:hidden;
    }
    .site-footer::before{
      content:"";
      position:absolute;
      left:0;right:0;top:18px;
      height:1px;
      background:linear-gradient(90deg,transparent,rgba(92,225,230,.35),transparent);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.45fr .8fr .8fr 1fr;
      gap:34px;
    }
    .footer-text{
      color:#93a9bd;
      margin:0 0 10px;
      font-size:14px;
    }
    .footer-title{
      color:#fff;
      font-weight:760;
      margin-bottom:13px;
    }
    .footer-links{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:9px;
    }
    .footer-link{
      color:#9fb4c8;
      font-size:14px;
    }
    .footer-link:hover{color:#dffcff}
    .footer-bottom{
      margin-top:34px;
      padding-top:18px;
      border-top:1px solid rgba(126,220,255,.11);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    .copyright{
      color:#70879d;
      font-size:13px;
    }

    @media (max-width: 1199px){
      .container-custom{width:min(100% - 32px,1120px)}
      .feature-layout{grid-template-columns:1fr}
      .side-list{grid-template-columns:repeat(3,1fr)}
      .process-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1.2fr 1fr 1fr}
      .footer-grid>div:last-child{grid-column:1/-1}
    }
    @media (max-width: 991px){
      :root{--nav-h:126px}
      .topbar{flex-wrap:wrap;gap:12px}
      .nav-search{order:3;max-width:none;flex:0 0 100%}
      .topbar .btn-main{margin-left:auto}
      .category-hero{padding-top:40px}
      .topic-tabs-wrap{top:126px}
      .side-list{grid-template-columns:1fr}
      .mixed-grid{grid-template-columns:repeat(2,1fr)}
      .grid-card:nth-child(n){grid-column:auto}
      .guide-grid{grid-template-columns:repeat(2,1fr)}
      .topic-banner::before{opacity:.38;right:-60px}
    }
    @media (max-width: 767px){
      .container-custom{width:min(100% - 24px,680px)}
      .section{padding:62px 0}
      .section-tight{padding:38px 0}
      .brand-text{font-size:16px;white-space:normal;line-height:1.25}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .topbar .btn-main{padding:10px 14px;font-size:14px}
      .channel-link{min-height:36px;padding:8px 13px}
      .category-hero h1{letter-spacing:-.03em}
      .hero-lead{font-size:16px}
      .filter-panel,.main-feature,.topic-banner,.cta-panel{border-radius:24px;padding:22px}
      .stat-strip{grid-template-columns:1fr}
      .section-head{display:block}
      .side-list,.process-grid,.guide-grid,.mixed-grid{grid-template-columns:1fr}
      .abstract-frame{min-height:150px}
      .topic-tabs-wrap{position:relative;top:auto}
      .topic-tab{padding:9px 13px}
      .cta-actions{justify-content:flex-start;margin-top:18px}
      .footer-grid{grid-template-columns:1fr;gap:24px}
      .footer-bottom{display:grid}
    }
    @media (max-width: 420px){
      .container-custom{width:min(100% - 20px,390px)}
      .brand-logo{gap:9px}
      .brand-text{font-size:15px}
      .hero-actions,.cta-actions{display:grid;grid-template-columns:1fr}
      .btn-main,.btn-ghost{width:100%}
      .category-hero{padding-bottom:26px}
      .glass-card{border-radius:20px}
      .main-feature,.filter-panel,.topic-banner,.cta-panel{padding:18px}
    }