/* roulang page: index */
:root{
      --paper:#f7f0e3;
      --paper-2:#fff9ee;
      --sand:#eadcc5;
      --sand-2:#d9c5a6;
      --terracotta:#713424;
      --terracotta-2:#8f3f2d;
      --fresco:#a04b37;
      --copper:#aa7a48;
      --copper-2:#c59a62;
      --graphite:#211c19;
      --ink:#2d2722;
      --muted:#75685e;
      --muted-2:#9b8c7c;
      --line:rgba(113,52,36,.18);
      --line-strong:rgba(113,52,36,.34);
      --green:#69705d;
      --white:#fffdfa;
      --shadow:0 24px 70px rgba(69,42,26,.12);
      --shadow-soft:0 14px 40px rgba(69,42,26,.09);
      --radius-xs:10px;
      --radius-sm:16px;
      --radius-md:22px;
      --radius-lg:32px;
      --container:1220px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 12% 8%, rgba(160,75,55,.11), transparent 34%),
        radial-gradient(circle at 88% 18%, rgba(170,122,72,.14), transparent 28%),
        linear-gradient(180deg,var(--paper),#fbf4e8 46%,#f5ead8 100%);
      line-height:1.78;
      letter-spacing:.01em;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.45;
      background-image:
        linear-gradient(rgba(113,52,36,.035) 1px,transparent 1px),
        linear-gradient(90deg,rgba(113,52,36,.03) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.25));
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    img,svg{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0;background:none}
    ::selection{background:rgba(160,75,55,.22)}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .serif{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif}
    .site-header{
      position:fixed;
      top:0;left:0;right:0;
      z-index:50;
      transition:background .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
      border-bottom:1px solid transparent;
    }
    .site-header.is-scrolled{
      background:rgba(247,240,227,.94);
      backdrop-filter:blur(16px);
      border-color:var(--line);
      box-shadow:0 10px 28px rgba(66,42,27,.08);
    }
    .nav{
      height:78px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:220px;
      font-weight:800;
      color:var(--graphite);
      letter-spacing:.02em;
    }
    .brand-mark{
      width:42px;height:42px;
      border:1px solid var(--line-strong);
      border-radius:14px 14px 8px 8px;
      position:relative;
      background:linear-gradient(145deg,rgba(255,249,238,.92),rgba(234,220,197,.72));
      box-shadow:inset 0 0 0 5px rgba(255,255,255,.32);
    }
    .brand-mark:before{
      content:"";
      position:absolute;
      left:9px;right:9px;bottom:9px;height:19px;
      border:2px solid var(--terracotta);
      border-bottom:0;
      border-radius:18px 18px 0 0;
      opacity:.85;
    }
    .brand span{font-size:18px;white-space:nowrap}
    .nav-links{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:6px;
      border:1px solid rgba(170,122,72,.2);
      border-radius:999px;
      background:rgba(255,249,238,.48);
    }
    .nav-links a{
      padding:9px 16px;
      border-radius:999px;
      color:var(--muted);
      font-size:14px;
      font-weight:650;
      transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
    }
    .nav-links a:hover,.nav-links a:focus-visible{
      color:var(--terracotta);
      background:rgba(234,220,197,.72);
      outline:none;
    }
    .nav-links a.active{
      color:var(--paper-2);
      background:var(--terracotta);
      box-shadow:0 8px 18px rgba(113,52,36,.18);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .status-badge,.badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      min-height:32px;
      padding:6px 12px;
      border-radius:999px;
      border:1px solid rgba(170,122,72,.32);
      background:rgba(234,220,197,.55);
      color:var(--terracotta);
      font-size:13px;
      font-weight:700;
      white-space:nowrap;
    }
    .status-dot{
      width:7px;height:7px;
      border-radius:50%;
      background:var(--copper);
      box-shadow:0 0 0 4px rgba(170,122,72,.13);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:46px;
      padding:12px 20px;
      border-radius:999px;
      font-weight:800;
      line-height:1;
      transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
      user-select:none;
      white-space:nowrap;
    }
    .btn .arrow{transition:transform .2s var(--ease)}
    .btn:hover .arrow{transform:translateX(3px)}
    .btn:active{transform:translateY(1px)}
    .btn:focus-visible,.faq-question:focus-visible,.mobile-toggle:focus-visible,input:focus-visible{
      outline:3px solid rgba(170,122,72,.32);
      outline-offset:3px;
    }
    .btn-primary{
      color:var(--paper-2);
      background:linear-gradient(135deg,var(--terracotta),var(--fresco));
      box-shadow:0 14px 34px rgba(113,52,36,.22);
    }
    .btn-primary:hover{
      background:linear-gradient(135deg,#5d291c,#873a2c);
      box-shadow:0 18px 46px rgba(113,52,36,.27);
      transform:translateY(-2px);
    }
    .btn-secondary{
      color:var(--graphite);
      border:1px solid rgba(170,122,72,.38);
      background:rgba(255,249,238,.78);
    }
    .btn-secondary:hover{
      border-color:rgba(113,52,36,.38);
      background:rgba(234,220,197,.72);
      transform:translateY(-2px);
    }
    .mobile-toggle{display:none;width:46px;height:46px;border-radius:999px;border:1px solid var(--line);background:rgba(255,249,238,.7);color:var(--terracotta)}
    .mobile-toggle span{display:block;width:18px;height:2px;background:currentColor;margin:5px auto;border-radius:9px;transition:.2s}
    main{padding-top:78px}
    .hero{
      position:relative;
      padding:88px 0 88px;
      overflow:hidden;
    }
    .hero:after{
      content:"";
      position:absolute;
      right:-120px;top:80px;
      width:420px;height:420px;
      border:1px solid rgba(170,122,72,.18);
      border-radius:50%;
      pointer-events:none;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(420px,.95fr);
      gap:66px;
      align-items:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      color:var(--terracotta);
      font-weight:800;
      font-size:14px;
      margin-bottom:20px;
    }
    .eyebrow:before{
      content:"";
      width:38px;height:1px;
      background:var(--copper);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      font-size:clamp(42px,5.6vw,72px);
      line-height:1.08;
      margin-bottom:24px;
      letter-spacing:-.055em;
      color:var(--graphite);
    }
    .hero-lead{
      width:min(620px,100%);
      color:var(--muted);
      font-size:18px;
      line-height:1.9;
      margin-bottom:30px;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
    .feature-tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border:1px solid var(--line);
      background:rgba(255,249,238,.68);
      color:var(--muted);
      border-radius:999px;
      padding:8px 12px;
      font-size:13px;
      font-weight:700;
    }
    .tag:before{
      content:"";
      width:6px;height:6px;border-radius:50%;
      background:var(--copper);
      opacity:.85;
    }
    .hero-panel{
      position:relative;
      min-height:540px;
    }
    .archive-card{
      position:absolute;
      background:rgba(255,249,238,.86);
      border:1px solid var(--line);
      border-radius:28px;
      box-shadow:var(--shadow);
      transition:transform .28s var(--ease),box-shadow .28s var(--ease);
      overflow:hidden;
    }
    .archive-card:hover{transform:translateY(-6px) rotate(0deg)!important;box-shadow:0 30px 80px rgba(69,42,26,.16)}
    .archive-main{
      inset:42px 18px auto 42px;
      width:78%;
      min-height:420px;
      padding:28px;
      transform:rotate(-1.4deg);
    }
    .archive-main:before{
      content:"";
      position:absolute;inset:0;
      background:
        linear-gradient(90deg,transparent 0 76%,rgba(170,122,72,.08) 76% 77%,transparent 77%),
        radial-gradient(circle at 90% 10%,rgba(160,75,55,.12),transparent 32%);
      pointer-events:none;
    }
    .ticket-card{
      right:10px;bottom:36px;
      width:235px;
      padding:22px;
      transform:rotate(2deg);
      z-index:2;
    }
    .timeline-card{
      left:0;bottom:0;
      width:270px;
      padding:20px;
      transform:rotate(-2deg);
      z-index:3;
    }
    .panel-title{
      font-size:26px;
      line-height:1.25;
      color:var(--graphite);
      margin:18px 0 14px;
    }
    .panel-line{height:1px;background:var(--line);margin:16px 0}
    .mini-row{
      display:flex;
      justify-content:space-between;
      gap:16px;
      padding:11px 0;
      border-bottom:1px solid rgba(113,52,36,.12);
      color:var(--muted);
      font-size:14px;
    }
    .seal{
      width:74px;height:74px;
      border:1px solid rgba(170,122,72,.46);
      border-radius:50%;
      display:grid;place-items:center;
      color:var(--terracotta);
      font-weight:900;
      background:rgba(234,220,197,.38);
    }
    .arch-graphic{
      height:138px;
      border:1px solid rgba(170,122,72,.28);
      border-bottom:0;
      border-radius:88px 88px 0 0;
      margin:22px 12px 0;
      position:relative;
    }
    .arch-graphic:before,.arch-graphic:after{
      content:"";
      position:absolute;bottom:0;top:32px;width:1px;background:rgba(170,122,72,.28);
    }
    .arch-graphic:before{left:34%}.arch-graphic:after{right:34%}
    .scroll-cue{
      margin-top:54px;
      display:flex;
      align-items:center;
      gap:14px;
      color:var(--muted-2);
      font-size:13px;
      font-weight:700;
    }
    .scroll-cue span:first-child{
      width:70px;height:1px;background:linear-gradient(90deg,var(--copper),transparent);
    }
    .section{padding:92px 0;position:relative}
    .section-head{
      display:grid;
      grid-template-columns:minmax(0,.78fr) minmax(0,1fr);
      gap:48px;
      align-items:end;
      margin-bottom:42px;
    }
    .section-kicker{
      color:var(--terracotta);
      font-size:14px;
      font-weight:900;
      margin-bottom:12px;
      letter-spacing:.08em;
    }
    h2{
      font-size:clamp(30px,3.8vw,46px);
      line-height:1.16;
      letter-spacing:-.04em;
      color:var(--graphite);
      margin-bottom:0;
    }
    .section-desc{
      color:var(--muted);
      font-size:17px;
      margin-bottom:0;
      max-width:660px;
    }
    .features-wrap{
      display:grid;
      grid-template-columns:330px minmax(0,1fr);
      gap:34px;
      align-items:start;
    }
    .large-number{
      position:sticky;
      top:112px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      padding:34px;
      background:linear-gradient(180deg,rgba(255,249,238,.72),rgba(234,220,197,.45));
      box-shadow:var(--shadow-soft);
    }
    .large-number strong{
      display:block;
      font-size:92px;
      line-height:.9;
      color:var(--terracotta);
      letter-spacing:-.08em;
    }
    .large-number p{color:var(--muted);margin:18px 0 0}
    .feature-list{display:grid;gap:18px}
    .feature-item{
      display:grid;
      grid-template-columns:82px 1fr 42px;
      gap:22px;
      align-items:center;
      padding:24px;
      border:1px solid var(--line);
      border-radius:24px;
      background:rgba(255,249,238,.68);
      box-shadow:0 10px 26px rgba(69,42,26,.05);
      transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
    }
    .feature-item:hover{
      transform:translateY(-3px);
      border-color:rgba(113,52,36,.34);
      box-shadow:var(--shadow-soft);
    }
    .feature-no{
      font-family:Georgia,serif;
      color:var(--copper);
      font-size:30px;
      font-weight:700;
      transition:transform .22s var(--ease);
    }
    .feature-item:hover .feature-no{transform:translateX(5px)}
    .feature-item h3{font-size:23px;margin:0 0 6px;color:var(--graphite);line-height:1.28}
    .feature-item p{margin:0;color:var(--muted)}
    .line-icon{
      width:42px;height:42px;border-radius:14px;
      border:1px solid rgba(170,122,72,.36);
      display:grid;place-items:center;color:var(--terracotta);
      background:rgba(234,220,197,.38);
    }
    .demo-board{
      display:grid;
      grid-template-columns:385px minmax(0,1fr);
      gap:24px;
      padding:18px;
      border:1px solid var(--line);
      border-radius:34px;
      background:rgba(255,249,238,.55);
      box-shadow:var(--shadow);
    }
    .index-panel,.preview-panel{
      border-radius:26px;
      border:1px solid rgba(113,52,36,.14);
      background:rgba(255,253,250,.72);
      padding:26px;
    }
    .index-title{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}
    .index-title h3{margin:0;font-size:24px;color:var(--graphite)}
    .tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
    .tab{
      padding:8px 12px;
      border-radius:999px;
      border:1px solid var(--line);
      color:var(--muted);
      font-size:13px;
      font-weight:800;
      background:rgba(247,240,227,.58);
    }
    .tab.active{background:var(--terracotta);color:var(--paper-2);border-color:var(--terracotta)}
    .index-list{display:grid;gap:12px}
    .index-row{
      display:flex;
      justify-content:space-between;
      gap:18px;
      padding:15px 0;
      border-bottom:1px solid rgba(113,52,36,.13);
    }
    .index-row b{color:var(--graphite)}
    .index-row span{color:var(--muted-2);font-size:13px;white-space:nowrap}
    .preview-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    .preview-card{
      min-height:172px;
      padding:22px;
      border:1px solid rgba(170,122,72,.25);
      border-radius:22px;
      background:linear-gradient(180deg,rgba(247,240,227,.52),rgba(255,249,238,.9));
      transition:.22s var(--ease);
    }
    .preview-card:hover{transform:translateY(-3px);border-color:rgba(113,52,36,.35)}
    .preview-card.wide{grid-column:span 2;display:grid;grid-template-columns:1fr 190px;gap:24px;align-items:center}
    .preview-card h3{font-size:22px;margin:12px 0 8px;color:var(--graphite)}
    .preview-card p{color:var(--muted);margin:0}
    .visual-bars{display:grid;gap:10px}
    .visual-bars i{display:block;height:10px;border-radius:999px;background:rgba(170,122,72,.25)}
    .visual-bars i:nth-child(2){width:78%;background:rgba(113,52,36,.25)}
    .visual-bars i:nth-child(3){width:58%}
    .proof-area{
      display:grid;
      grid-template-columns:minmax(0,1fr) 390px;
      gap:34px;
      align-items:start;
    }
    .timeline{
      border-left:1px solid rgba(170,122,72,.36);
      padding-left:28px;
      display:grid;
      gap:22px;
    }
    .timeline-item{
      position:relative;
      padding:24px;
      border:1px solid var(--line);
      border-radius:24px;
      background:rgba(255,249,238,.65);
      transition:.22s var(--ease);
    }
    .timeline-item:before{
      content:"";
      position:absolute;
      left:-35px;top:29px;
      width:12px;height:12px;border-radius:50%;
      background:var(--terracotta);
      box-shadow:0 0 0 7px rgba(113,52,36,.12);
    }
    .timeline-item:hover{transform:translateX(4px);border-color:var(--line-strong)}
    .timeline-item h3{margin:0 0 8px;font-size:22px;color:var(--graphite)}
    .timeline-item p{margin:0;color:var(--muted)}
    .quote-card{
      position:sticky;
      top:112px;
      padding:34px;
      border-radius:30px;
      background:var(--graphite);
      color:var(--paper-2);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .quote-card:before{
      content:"“";
      position:absolute;
      right:28px;top:-22px;
      font-family:Georgia,serif;
      font-size:150px;
      line-height:1;
      color:rgba(255,249,238,.08);
    }
    .quote-card p{font-size:22px;line-height:1.65;margin:0 0 24px}
    .quote-card small{color:#d6c7b7}
    .plans{
      display:grid;
      gap:18px;
    }
    .plan-card{
      display:grid;
      grid-template-columns:220px minmax(0,1fr) auto;
      gap:28px;
      align-items:center;
      padding:28px;
      border:1px solid var(--line);
      border-radius:28px;
      background:rgba(255,249,238,.72);
      box-shadow:0 10px 28px rgba(69,42,26,.05);
      transition:.22s var(--ease);
    }
    .plan-card.featured{
      background:linear-gradient(135deg,rgba(113,52,36,.94),rgba(160,75,55,.88));
      color:var(--paper-2);
      border-color:rgba(113,52,36,.4);
    }
    .plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-soft)}
    .plan-card h3{font-size:25px;margin:0 0 8px}
    .plan-card p{margin:0;color:var(--muted)}
    .plan-card.featured p,.plan-card.featured li{color:#eadccd}
    .plan-card ul{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:10px 18px;
      color:var(--muted);
      font-size:15px;
    }
    .plan-card li:before{content:"—";color:var(--copper);margin-right:8px}
    .content-entrance{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:24px;
      align-items:stretch;
    }
    .category-card{
      position:relative;
      padding:34px;
      min-height:310px;
      border-radius:32px;
      border:1px solid var(--line);
      background:
        linear-gradient(145deg,rgba(255,249,238,.86),rgba(234,220,197,.55)),
        radial-gradient(circle at 90% 12%,rgba(160,75,55,.12),transparent 32%);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
      transition:.24s var(--ease);
    }
    .category-card:hover{transform:translateY(-5px);border-color:rgba(113,52,36,.36);box-shadow:var(--shadow)}
    .category-card:after{
      content:"";
      position:absolute;right:32px;bottom:-32px;
      width:150px;height:150px;
      border:1px solid rgba(170,122,72,.28);
      border-radius:50%;
    }
    .category-card h3{font-size:30px;margin:18px 0 12px;color:var(--graphite)}
    .category-card p{color:var(--muted);max-width:520px}
    .mini-feed{
      display:grid;
      gap:14px;
    }
    .feed-item{
      display:flex;
      justify-content:space-between;
      gap:18px;
      align-items:center;
      border:1px solid var(--line);
      border-radius:22px;
      padding:20px 22px;
      background:rgba(255,249,238,.62);
      transition:.22s var(--ease);
    }
    .feed-item:hover{border-color:var(--line-strong);transform:translateX(3px)}
    .feed-item h3{font-size:19px;margin:0 0 4px;color:var(--graphite)}
    .feed-item p{margin:0;color:var(--muted);font-size:14px}
    .faq-wrap{display:grid;grid-template-columns:360px minmax(0,1fr);gap:34px}
    .faq-aside{
      border:1px solid var(--line);
      border-radius:30px;
      padding:30px;
      background:rgba(255,249,238,.58);
      height:max-content;
    }
    .faq-aside p{color:var(--muted);margin-bottom:22px}
    .faq-list{display:grid;gap:12px}
    .faq-item{
      border:1px solid var(--line);
      border-radius:22px;
      background:rgba(255,249,238,.68);
      overflow:hidden;
      transition:border-color .22s var(--ease),background .22s var(--ease);
    }
    .faq-item.open{
      border-color:rgba(113,52,36,.36);
      background:rgba(234,220,197,.36);
    }
    .faq-question{
      width:100%;
      min-height:58px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:18px 22px;
      color:var(--graphite);
      font-weight:850;
      text-align:left;
    }
    .faq-icon{
      flex:0 0 auto;
      width:28px;height:28px;
      border-radius:50%;
      display:grid;place-items:center;
      border:1px solid rgba(170,122,72,.35);
      color:var(--terracotta);
      transition:.22s var(--ease);
    }
    .faq-item.open .faq-icon{transform:rotate(45deg);background:var(--terracotta);color:var(--paper-2)}
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .24s ease-out;
    }
    .faq-answer div{
      margin:0 22px 22px;
      padding:0 0 0 18px;
      border-left:3px solid var(--copper);
      color:var(--muted);
    }
    .final-cta{
      padding:84px 0 92px;
    }
    .cta-panel{
      position:relative;
      overflow:hidden;
      border-radius:38px;
      padding:54px;
      color:var(--paper-2);
      background:
        radial-gradient(circle at 84% 18%,rgba(197,154,98,.32),transparent 30%),
        linear-gradient(135deg,var(--graphite),var(--terracotta));
      box-shadow:var(--shadow);
    }
    .cta-panel:before{
      content:"";
      position:absolute;
      inset:18px;
      border:1px solid rgba(255,249,238,.14);
      border-radius:28px;
      pointer-events:none;
    }
    .cta-content{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:end}
    .cta-panel h2{color:var(--paper-2);max-width:720px}
    .cta-panel p{color:#decfbe;margin:16px 0 0;max-width:620px}
    .cta-buttons{display:flex;gap:12px;flex-wrap:wrap}
    .cta-panel .btn-secondary{background:rgba(255,249,238,.08);color:var(--paper-2);border-color:rgba(255,249,238,.28)}
    .site-footer{
      background:#1d1916;
      color:#efe4d4;
      padding:58px 0 34px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:42px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,249,238,.12);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:900;
      font-size:19px;
      margin-bottom:16px;
    }
    .footer-brand .brand-mark{background:rgba(255,249,238,.06);border-color:rgba(255,249,238,.18)}
    .footer-brand .brand-mark:before{border-color:#decfbe}
    .site-footer p{color:#cbbba8;margin:0;max-width:520px}
    .footer-col h3{margin:0 0 14px;font-size:16px;color:#fff7ec}
    .footer-links{display:grid;gap:10px}
    .footer-links a{
      color:#cbbba8;
      transition:color .2s var(--ease),transform .2s var(--ease);
    }
    .footer-links a:hover,.footer-links a:focus-visible{
      color:#fff7ec;
      transform:translateX(3px);
      outline:none;
    }
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:20px;
      flex-wrap:wrap;
      color:#a99a89;
      font-size:14px;
      padding-top:22px;
    }
    .float-cta{
      position:fixed;
      right:24px;
      bottom:24px;
      z-index:40;
      display:flex;
      align-items:center;
      gap:10px;
      padding:10px;
      border-radius:999px;
      background:rgba(247,240,227,.94);
      border:1px solid var(--line);
      box-shadow:0 18px 50px rgba(33,28,25,.16);
      backdrop-filter:blur(12px);
    }
    .float-cta .status-badge{min-height:40px}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
    .reveal.in-view{opacity:1;transform:translateY(0)}
    @media (max-width:1080px){
      .container{width:min(100% - 36px,var(--container))}
      .hero-grid,.section-head,.features-wrap,.demo-board,.proof-area,.faq-wrap{grid-template-columns:1fr}
      .hero-panel{min-height:500px;max-width:620px;margin:0 auto;width:100%}
      .large-number,.quote-card{position:relative;top:auto}
      .plan-card{grid-template-columns:1fr}
      .plan-card ul{grid-template-columns:1fr 1fr}
      .cta-content{grid-template-columns:1fr}
      .nav-actions .status-badge{display:none}
    }
    @media (max-width:820px){
      body{padding-bottom:82px}
      .nav{height:70px}
      .brand{min-width:auto}
      .brand span{font-size:16px}
      .mobile-toggle{display:block}
      .nav-links{
        position:absolute;
        left:18px;right:18px;top:78px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        border-radius:24px;
        padding:12px;
        background:rgba(255,249,238,.98);
        box-shadow:var(--shadow);
      }
      .nav-links.open{display:flex}
      .nav-links a{text-align:center;padding:13px 16px}
      .nav-actions .btn{display:none}
      main{padding-top:70px}
      .hero{padding:66px 0 68px}
      .section{padding:68px 0}
      .archive-main{left:20px;right:20px;width:auto}
      .ticket-card{right:0;width:215px}
      .timeline-card{left:0;width:240px}
      .preview-grid,.content-entrance{grid-template-columns:1fr}
      .preview-card.wide{grid-column:auto;grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .float-cta{
        left:12px;right:12px;bottom:12px;
        justify-content:space-between;
        border-radius:22px;
      }
      .float-cta .status-badge{display:none}
      .float-cta .btn{flex:1}
      .feature-item{grid-template-columns:58px 1fr}
      .line-icon{grid-column:2}
    }
    @media (max-width:520px){
      .container{width:min(100% - 28px,var(--container))}
      h1{font-size:38px;letter-spacing:-.045em}
      h2{font-size:30px}
      .hero-actions,.cta-buttons{flex-direction:column}
      .btn{width:100%}
      .hero-panel{min-height:440px}
      .archive-main{top:16px;left:0;right:0;padding:22px;min-height:365px}
      .ticket-card{bottom:34px;width:188px;padding:18px}
      .timeline-card{width:210px;padding:16px}
      .panel-title{font-size:22px}
      .arch-graphic{height:105px}
      .feature-item{padding:20px;gap:14px}
      .demo-board,.index-panel,.preview-panel{padding:16px;border-radius:24px}
      .plan-card,.category-card,.cta-panel{padding:26px;border-radius:26px}
      .plan-card ul{grid-template-columns:1fr}
      .faq-question{padding:16px}
      .copyright{display:block}
    }

/* roulang page: category1 */
:root{
  --ink:#292522;
  --ink-soft:#514943;
  --muted:#81766d;
  --paper:#f6f0e7;
  --paper-deep:#ebe0d1;
  --card:#fbf8f2;
  --terracotta:#8d4436;
  --terracotta-dark:#6d3028;
  --copper:#b17c59;
  --copper-light:#d8b79b;
  --stone:#c8b9aa;
  --line:rgba(97,72,56,.19);
  --shadow:0 18px 42px rgba(61,42,29,.09);
  --radius:22px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  color:var(--ink);
  background:
    radial-gradient(rgba(88,65,48,.035) .7px,transparent .7px) 0 0/7px 7px,
    var(--paper);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body:before{
  content:"";
  position:fixed;inset:0;pointer-events:none;opacity:.28;
  background:linear-gradient(90deg,transparent 49.8%,rgba(124,91,67,.035) 50%,transparent 50.2%);
  z-index:-1;
}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{border:0;background:none;cursor:pointer}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 48px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:20;
  border-bottom:1px solid transparent;
  transition:.28s var(--ease);
}
.site-header.scrolled{
  background:rgba(246,240,231,.94);
  backdrop-filter:blur(14px);
  border-color:var(--line);
  box-shadow:0 8px 25px rgba(62,43,30,.06);
}
.nav{min-height:78px;display:flex;align-items:center;gap:34px}
.brand,.footer-brand{display:inline-flex;align-items:center;gap:11px;font-family:"Noto Serif SC","Source Han Serif SC",SimSun,serif;font-weight:700;white-space:nowrap}
.brand{font-size:18px;letter-spacing:.02em}
.brand-mark{
  width:24px;height:27px;display:inline-block;position:relative;
  border:1.5px solid var(--terracotta);
  border-top:0;border-radius:0 0 13px 13px;
}
.brand-mark:before{
  content:"";position:absolute;left:3px;right:3px;top:-5px;height:9px;
  border:1.5px solid var(--terracotta);border-bottom:0;border-radius:12px 12px 0 0;
}
.brand-mark:after{
  content:"";position:absolute;top:5px;bottom:0;left:10px;width:1px;background:var(--copper);
}
.nav-links{display:flex;align-items:center;gap:27px;margin-left:auto}
.nav-links a,.footer-links a{color:var(--ink-soft);transition:.2s ease}
.nav-links a{font-size:14px;position:relative;padding:8px 0}
.nav-links a:after{content:"";position:absolute;height:2px;left:0;right:100%;bottom:1px;background:var(--terracotta);transition:.22s ease}
.nav-links a:hover,.nav-links a.active{color:var(--terracotta-dark)}
.nav-links a:hover:after,.nav-links a.active:after{right:0}
.nav-actions{display:flex;align-items:center;gap:15px}
.status-badge,.tag,.status{
  display:inline-flex;align-items:center;gap:7px;
  padding:4px 11px;border:1px solid var(--copper-light);
  color:var(--terracotta-dark);background:rgba(216,183,155,.18);
  border-radius:999px;font-size:12px;line-height:1.5;white-space:nowrap
}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--copper);display:inline-block}
.btn{
  min-height:46px;padding:10px 19px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-size:14px;font-weight:650;transition:.22s var(--ease);
  border:1px solid transparent
}
.btn-primary{color:#fff7ed;background:var(--terracotta);box-shadow:0 9px 19px rgba(117,53,42,.16)}
.btn-primary:hover{background:var(--terracotta-dark);transform:translateY(-3px);box-shadow:0 13px 25px rgba(117,53,42,.23)}
.btn-primary:active,.btn-secondary:active{transform:translateY(1px)}
.btn-secondary{color:var(--terracotta-dark);background:var(--card);border-color:var(--copper-light)}
.btn-secondary:hover{background:var(--paper-deep);transform:translateY(-3px)}
.btn:focus-visible,.nav-links a:focus-visible,.mobile-toggle:focus-visible,.faq-question:focus-visible{outline:3px solid rgba(177,124,89,.42);outline-offset:4px}
.arrow{font-size:18px;line-height:1;transition:transform .2s ease}
.btn:hover .arrow{transform:translateX(4px)}
.mobile-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;padding:10px}
.mobile-toggle span{height:1px;background:var(--ink);display:block;margin:5px 0;transition:.2s}
.breadcrumb{padding-top:34px;color:var(--muted);font-size:13px}
.breadcrumb a:hover{color:var(--terracotta)}
.hero-inner{padding:54px 0 70px;display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}
.eyebrow,.section-kicker{font-size:12px;letter-spacing:.16em;color:var(--terracotta);font-weight:700}
.hero h1{
  max-width:690px;margin:15px 0 21px;
  font-family:"Noto Serif SC","Source Han Serif SC",SimSun,serif;
  font-size:clamp(40px,5.5vw,66px);line-height:1.14;letter-spacing:-.045em
}
.hero h1 em{color:var(--terracotta);font-style:normal}
.hero-lead{max-width:620px;color:var(--ink-soft);font-size:17px;line-height:1.9}
.hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.hero-visual{min-height:300px;position:relative}
.arch-card{
  position:absolute;inset:18px 15px 0 25px;
  background:var(--ink);color:#f4e7d6;border-radius:5px 5px 25px 25px;
  padding:30px;box-shadow:var(--shadow);overflow:hidden;transform:rotate(2deg);
}
.arch-card:before{
  content:"";position:absolute;width:250px;height:250px;border:1px solid rgba(216,183,155,.32);
  border-radius:50%;right:-70px;top:-62px;box-shadow:0 0 0 24px rgba(216,183,155,.05),0 0 0 48px rgba(216,183,155,.04)
}
.arch-card:after{content:"";position:absolute;left:30px;right:30px;bottom:30px;height:1px;background:rgba(216,183,155,.35)}
.arch-top{display:flex;justify-content:space-between;color:#d7b899;font-size:11px;letter-spacing:.1em}
.arch-title{position:relative;margin-top:57px;font-family:"Noto Serif SC",SimSun,serif;font-size:31px;line-height:1.35;max-width:270px}
.arch-sub{position:relative;margin-top:18px;color:#cbbcaf;font-size:13px;line-height:1.7}
.visual-slip{
  position:absolute;right:-3px;bottom:5px;width:145px;padding:18px 16px;
  background:#eee1ce;border:1px solid #c7a98e;color:var(--terracotta-dark);
  box-shadow:0 13px 28px rgba(58,39,27,.14);transform:rotate(-6deg)
}
.visual-slip strong{display:block;font-family:serif;font-size:25px;line-height:1;margin-bottom:9px}
.visual-slip span{font-size:11px;color:var(--ink-soft)}
.section{padding:88px 0}
.section-heading{display:flex;justify-content:space-between;gap:35px;align-items:end;margin-bottom:32px}
.section-heading h2{
  font-family:"Noto Serif SC","Source Han Serif SC",SimSun,serif;
  font-size:clamp(30px,4vw,43px);line-height:1.25;letter-spacing:-.035em
}
.section-heading p{max-width:440px;color:var(--muted);font-size:14px}
.filter-bar{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:16px 20px;border:1px solid var(--line);background:rgba(251,248,242,.66);
  border-radius:15px;margin-bottom:28px
}
.filter-label{font-size:13px;color:var(--muted);margin-right:5px}
.filter{padding:7px 13px;border-radius:999px;color:var(--ink-soft);font-size:13px;transition:.2s;border:1px solid transparent}
.filter:hover,.filter.active{color:#fff;background:var(--terracotta);border-color:var(--terracotta)}
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:28px;align-items:start}
.feature-card{
  background:var(--ink);color:#f7ecdf;border-radius:var(--radius);padding:34px 36px;
  min-height:245px;position:relative;overflow:hidden;margin-bottom:17px
}
.feature-card:after{content:"IV";position:absolute;right:25px;bottom:-28px;color:rgba(216,183,155,.1);font:150px/1 Georgia,serif}
.feature-card h3{font:26px/1.4 "Noto Serif SC",SimSun,serif;max-width:570px;margin:13px 0 10px}
.feature-card p{max-width:600px;color:#d5c7ba;font-size:14px}
.feature-card .tag{color:#e4c6aa;background:rgba(177,124,89,.16);border-color:rgba(216,183,155,.4)}
.index-list{display:grid;gap:12px}
.index-item{
  display:grid;grid-template-columns:78px 1fr auto;gap:18px;align-items:center;
  padding:22px 23px;background:var(--card);border:1px solid var(--line);border-radius:17px;
  transition:.25s var(--ease)
}
.index-item:hover{transform:translateY(-3px);border-color:var(--copper);box-shadow:var(--shadow)}
.index-no{font:25px/1 Georgia,serif;color:var(--copper)}
.index-item h3{font-size:18px;margin-bottom:3px}
.index-item p{font-size:13px;color:var(--muted);line-height:1.65}
.index-meta{font-size:12px;color:var(--terracotta);white-space:nowrap}
.side-stack{display:grid;gap:17px;position:sticky;top:103px}
.side-card{padding:25px;background:rgba(235,224,209,.66);border:1px solid var(--line);border-radius:18px}
.side-card h3{font:20px "Noto Serif SC",SimSun,serif;margin-bottom:15px}
.quick-links{list-style:none;display:grid;gap:10px}
.quick-links li{border-bottom:1px solid var(--line);padding-bottom:9px}
.quick-links a{display:flex;justify-content:space-between;color:var(--ink-soft);font-size:14px}
.quick-links a:hover{color:var(--terracotta)}
.update-list{list-style:none;display:grid;gap:13px}
.update-list li{display:grid;grid-template-columns:9px 1fr;gap:10px;color:var(--ink-soft);font-size:13px;line-height:1.55}
.update-list i{width:7px;height:7px;background:var(--copper);border-radius:50%;margin-top:8px}
.side-card .btn{width:100%;margin-top:8px}
.info-band{background:var(--paper-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.info-block{padding:26px 30px;border-right:1px solid var(--line)}
.info-block:first-child{padding-left:0}
.info-block:last-child{border-right:0}
.info-block strong{display:block;font:27px Georgia,serif;color:var(--terracotta);margin-bottom:5px}
.info-block span{font-size:13px;color:var(--ink-soft)}
.faq-section{background:rgba(251,248,242,.48)}
.faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px}
.faq-intro p{color:var(--muted);font-size:15px;margin-top:16px;max-width:350px}
.faq-list{display:grid;gap:10px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.2s}
.faq-item.open{border-color:var(--copper);box-shadow:0 8px 20px rgba(61,42,29,.05)}
.faq-question{width:100%;min-height:58px;padding:15px 19px;text-align:left;display:flex;justify-content:space-between;align-items:center;color:var(--ink);font-weight:650}
.faq-icon{font-size:22px;color:var(--terracotta);font-weight:300;transition:.2s}
.faq-answer{max-height:0;overflow:hidden;padding:0 19px;color:var(--muted);font-size:14px;line-height:1.8;transition:max-height .24s ease,padding .24s ease}
.faq-item.open .faq-answer{max-height:150px;padding:0 19px 18px;border-left:3px solid var(--copper);margin-left:19px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.cta-section{padding:78px 0}
.cta-box{
  background:var(--terracotta);color:#fff5e9;border-radius:24px;padding:48px 55px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;overflow:hidden
}
.cta-box:after{content:"";position:absolute;right:8%;top:-90px;width:270px;height:270px;border:1px solid rgba(255,239,219,.25);border-radius:50%;box-shadow:0 0 0 28px rgba(255,239,219,.06),0 0 0 56px rgba(255,239,219,.04)}
.cta-box h2{font:34px/1.3 "Noto Serif SC",SimSun,serif;position:relative;z-index:1}
.cta-box p{color:#f0d9c5;font-size:14px;margin-top:7px;position:relative;z-index:1}
.cta-box .btn{position:relative;z-index:1;background:#f7ecdf;color:var(--terracotta-dark)}
.site-footer{background:var(--ink);color:#f4e8da;padding:59px 0 25px}
.footer-grid{display:grid;grid-template-columns:1.5fr .7fr .9fr;gap:70px;padding-bottom:45px}
.footer-brand{font-size:19px;color:#fff1df}
.site-footer p{max-width:410px;color:#c3b7ab;font-size:13px;margin-top:17px;line-height:1.8}
.footer-col h3{font-size:14px;color:#e1c4a8;margin-bottom:13px}
.footer-links{display:grid;gap:7px}
.footer-links a{font-size:13px;color:#c3b7ab}
.footer-links a:hover{color:#fff1df}
.copyright{border-top:1px solid rgba(235,224,209,.16);padding-top:20px;display:flex;justify-content:space-between;gap:18px;color:#9e9389;font-size:12px}
@media (max-width:991px){
  .nav{gap:20px}.nav-links{gap:17px}.nav-actions .status-badge{display:none}
  .hero-inner{gap:40px}.content-layout{grid-template-columns:minmax(0,1fr) 280px}
  .faq-grid{gap:35px}.footer-grid{gap:35px}
}
@media (max-width:767px){
  .container{width:min(100% - 34px,600px)}
  .mobile-toggle{display:block}
  .nav-links{
    display:none;position:absolute;top:72px;left:17px;right:17px;
    background:var(--card);border:1px solid var(--line);border-radius:16px;
    padding:12px 18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:2px
  }
  .nav-links.show{display:flex}.nav-links a{padding:11px 3px}
  .nav-actions{margin-left:0}.nav-actions .btn{display:none}
  .hero-inner{grid-template-columns:1fr;padding:38px 0 54px;gap:30px}
  .hero h1{font-size:42px}.hero-lead{font-size:15px}
  .hero-visual{min-height:265px}.arch-card{inset:15px 8px 0 8px;padding:24px}.arch-title{margin-top:45px;font-size:27px}
  .section{padding:65px 0}.section-heading{display:block;margin-bottom:24px}.section-heading p{margin-top:13px}
  .content-layout,.faq-grid{grid-template-columns:1fr}.side-stack{position:static}
  .info-grid{grid-template-columns:1fr}.info-block,.info-block:first-child{padding:19px 0;border-right:0;border-bottom:1px solid var(--line)}
  .info-block:last-child{border-bottom:0}.index-item{grid-template-columns:46px 1fr}.index-meta{grid-column:2}
  .cta-box{display:block;padding:38px 27px}.cta-box h2{font-size:29px}.cta-box .btn{margin-top:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}
  .copyright{display:block}.copyright span{display:block;margin-top:6px}
}
@media (max-width:420px){
  .container{width:calc(100% - 28px)}.brand{font-size:16px}.brand-mark{width:21px;height:24px}
  .hero h1{font-size:38px}.hero-actions{display:grid}.hero-actions .btn{width:100%}
  .index-item{padding:18px 16px;gap:11px}.index-item h3{font-size:16px}
  .feature-card{padding:27px 23px}.footer-grid{grid-template-columns:1fr}
}