/* roulang page: index */
:root{
      --ink:#07110f;
      --ink-2:#10201d;
      --panel:#122521;
      --panel-soft:#18332e;
      --mint:#39f3b5;
      --mint-2:#8fffe0;
      --mint-soft:#e8fff7;
      --orange:#ff9f43;
      --cream:#f8f5ee;
      --cloud:#f4f8f6;
      --white:#ffffff;
      --text:#1d2825;
      --muted:#65736f;
      --line:#dce7e3;
      --line-dark:rgba(255,255,255,.14);
      --shadow:0 22px 55px rgba(8,31,26,.12);
      --shadow-soft:0 12px 35px rgba(8,31,26,.08);
      --radius-xl:30px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:12px;
      --container:1200px;
      --ease:.22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:linear-gradient(180deg,#fbfdfb 0%,#f3f8f5 48%,#f8f5ee 100%);
      line-height:1.78;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer}
    :focus-visible{outline:3px solid rgba(57,243,181,.45);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .skip-link{
      position:absolute;left:-999px;top:12px;background:var(--mint);color:var(--ink);
      padding:10px 16px;border-radius:999px;font-weight:800;z-index:1000
    }
    .skip-link:focus{left:16px}
    .site-header{
      position:sticky;top:0;z-index:100;
      backdrop-filter:saturate(140%) blur(16px);
      background:rgba(248,253,250,.86);
      border-bottom:1px solid rgba(220,231,227,.72);
    }
    .nav-wrap{
      height:78px;display:flex;align-items:center;justify-content:space-between;gap:22px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:max-content;font-weight:850;letter-spacing:-.02em;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:15px;background:var(--ink);
      display:grid;place-items:center;box-shadow:0 12px 26px rgba(7,17,15,.16);position:relative;overflow:hidden;
    }
    .brand-mark:before{
      content:"";width:19px;height:19px;border:3px solid var(--mint);border-left-color:transparent;border-radius:7px;transform:rotate(45deg)
    }
    .brand-mark:after{
      content:"";position:absolute;right:7px;top:8px;width:7px;height:7px;border-radius:50%;background:var(--orange)
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.12}
    .brand-text strong{font-size:18px;color:var(--ink)}
    .brand-text span{font-size:12px;color:var(--muted);font-weight:700;margin-top:3px}
    .main-nav{display:flex;align-items:center;justify-content:center;gap:6px}
    .main-nav a{
      padding:10px 15px;border-radius:999px;color:#34433f;font-size:15px;font-weight:700;
      transition:background var(--ease),color var(--ease),transform var(--ease);
    }
    .main-nav a:hover{background:#e9f4f0;color:var(--ink);transform:translateY(-1px)}
    .main-nav a.active{background:var(--ink);color:var(--mint)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{
      display:none;width:44px;height:44px;border-radius:14px;background:#ecf5f1;color:var(--ink);
      align-items:center;justify-content:center;flex-direction:column;gap:5px;
    }
    .menu-toggle span{width:20px;height:2px;background:currentColor;border-radius:999px;transition:var(--ease)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:46px;padding:12px 20px;border-radius:999px;
      font-weight:850;letter-spacing:.01em;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
      white-space:nowrap;
    }
    .btn-primary{background:var(--mint);color:var(--ink);box-shadow:0 12px 28px rgba(57,243,181,.28)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(57,243,181,.36)}
    .btn-secondary{background:rgba(255,255,255,.12);color:var(--white);border:1px solid var(--line-dark)}
    .btn-secondary:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
    .btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:0 8px 18px rgba(8,31,26,.04)}
    .btn-ghost:hover{background:#eff9f5;border-color:#bde9d8;transform:translateY(-2px)}
    .hero{
      position:relative;isolation:isolate;overflow:hidden;background:var(--ink);
      color:var(--white);padding:72px 0 34px;border-bottom-left-radius:36px;border-bottom-right-radius:36px;
    }
    .hero:before{
      content:"";position:absolute;inset:0;z-index:-3;
      background-image:linear-gradient(90deg,rgba(7,17,15,.94),rgba(7,17,15,.76)),url('/assets/images/backpic/back-1.webp');
      background-size:cover;background-position:center;
    }
    .hero:after{
      content:"";position:absolute;inset:0;z-index:-2;
      background:
        radial-gradient(circle at 78% 24%,rgba(57,243,181,.28),transparent 28%),
        radial-gradient(circle at 18% 70%,rgba(255,159,67,.16),transparent 26%),
        linear-gradient(transparent 31px,rgba(255,255,255,.04) 32px),
        linear-gradient(90deg,transparent 31px,rgba(255,255,255,.035) 32px);
      background-size:auto,auto,32px 32px,32px 32px;
      pointer-events:none;
    }
    .hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:52px;align-items:center}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(57,243,181,.35);
      background:rgba(57,243,181,.09);color:var(--mint-2);padding:8px 13px;border-radius:999px;
      font-size:14px;font-weight:800;margin-bottom:18px;
    }
    .eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 6px rgba(57,243,181,.13)}
    h1,h2,h3,p{margin-top:0}
    .hero h1{
      font-size:clamp(34px,5vw,56px);line-height:1.16;margin-bottom:20px;letter-spacing:-.055em;
      max-width:760px;font-weight:900;
    }
    .hero-lead{font-size:18px;line-height:1.9;color:#d8e8e3;max-width:720px;margin-bottom:28px}
    .hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:24px}
    .hero-note{
      display:flex;gap:12px;align-items:flex-start;color:#b8cbc5;font-size:14px;max-width:650px
    }
    .hero-note i{
      width:22px;height:22px;border-radius:50%;background:rgba(255,159,67,.18);color:var(--orange);
      display:grid;place-items:center;font-style:normal;font-weight:900;flex:0 0 auto;margin-top:2px
    }
    .entry-console{
      background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.06));
      border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-xl);
      padding:20px;box-shadow:0 26px 80px rgba(0,0,0,.25);position:relative;overflow:hidden;
    }
    .entry-console:before{
      content:"";position:absolute;right:-75px;top:-90px;width:220px;height:220px;border-radius:50%;
      background:rgba(57,243,181,.16);filter:blur(6px)
    }
    .console-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:16px;position:relative}
    .status{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:8px 12px;background:rgba(57,243,181,.13);color:var(--mint-2);font-size:13px;font-weight:850}
    .status:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mint)}
    .console-time{font-size:13px;color:#c8dcd6}
    .console-card{
      background:#f7fffb;color:var(--ink);border-radius:24px;padding:22px;margin-bottom:14px;position:relative;z-index:1;
    }
    .console-card h2{font-size:22px;margin-bottom:12px;letter-spacing:-.02em}
    .step-mini{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .step-mini li{
      display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:flex-start;padding:12px;border-radius:16px;background:#edf8f4;border:1px solid #d8eee6
    }
    .step-mini b{
      width:34px;height:34px;border-radius:12px;background:var(--ink);color:var(--mint);display:grid;place-items:center;font-size:13px
    }
    .step-mini strong{display:block;margin-bottom:2px;font-size:15px}
    .step-mini span{display:block;color:#5c6c67;font-size:13px;line-height:1.55}
    .console-bottom{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .metric{
      padding:16px;border-radius:18px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.13)
    }
    .metric strong{display:block;color:var(--mint);font-size:24px;line-height:1.1}
    .metric span{font-size:13px;color:#c8dcd6}
    .index-strip{
      margin-top:48px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);
      border-radius:22px;padding:10px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
      backdrop-filter:blur(10px);
    }
    .index-strip a{
      display:flex;align-items:center;justify-content:center;gap:8px;padding:13px 10px;border-radius:16px;
      color:#d8eee8;font-weight:800;font-size:14px;transition:background var(--ease),color var(--ease),transform var(--ease);
    }
    .index-strip a:hover{background:rgba(57,243,181,.12);color:var(--mint);transform:translateY(-1px)}
    main{overflow:hidden}
    .section{padding:88px 0}
    .section.tight{padding:66px 0}
    .section-head{display:flex;justify-content:space-between;gap:28px;align-items:flex-end;margin-bottom:34px}
    .section-kicker{color:#158663;font-weight:900;font-size:14px;margin-bottom:8px}
    .section-title{font-size:clamp(28px,3.2vw,40px);line-height:1.24;margin-bottom:0;letter-spacing:-.04em;color:var(--ink)}
    .section-desc{max-width:560px;color:var(--muted);margin:0;font-size:16px}
    .guide-panel{
      display:grid;grid-template-columns:.9fr 1.1fr;gap:26px;background:var(--white);
      border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow);padding:24px;
    }
    .guide-visual{
      min-height:440px;border-radius:24px;overflow:hidden;position:relative;background:var(--ink);
    }
    .guide-visual img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;filter:saturate(.95) contrast(1.04)}
    .guide-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,15,.1),rgba(7,17,15,.82))}
    .visual-caption{position:absolute;left:22px;right:22px;bottom:22px;z-index:1;color:#fff}
    .visual-caption .tag{margin-bottom:10px}
    .visual-caption h3{font-size:26px;line-height:1.25;margin-bottom:8px}
    .visual-caption p{color:#d5e6e0;margin-bottom:0}
    .tag{
      display:inline-flex;align-items:center;gap:7px;padding:7px 11px;border-radius:999px;
      font-size:13px;font-weight:850;background:var(--mint-soft);color:#087250;border:1px solid #c9f4e5;
    }
    .tag.orange{background:#fff3e3;color:#9b5709;border-color:#ffe0b8}
    .guide-steps{display:grid;gap:14px;align-content:center;padding:8px}
    .guide-step{
      display:grid;grid-template-columns:52px 1fr;gap:16px;padding:19px;border-radius:22px;
      border:1px solid var(--line);background:linear-gradient(180deg,#fff,#f7fbf9);
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    }
    .guide-step:hover{transform:translateX(4px);border-color:#bcebd9;box-shadow:var(--shadow-soft)}
    .guide-step .num{
      width:52px;height:52px;border-radius:18px;background:var(--ink);color:var(--mint);display:grid;place-items:center;font-weight:900
    }
    .guide-step h3{font-size:19px;margin-bottom:4px;color:var(--ink)}
    .guide-step p{margin-bottom:0;color:var(--muted);font-size:15px}
    .mosaic{
      display:grid;grid-template-columns:1.16fr .84fr;gap:22px;
    }
    .feature-large,.feature-card{
      border:1px solid var(--line);background:var(--white);border-radius:var(--radius-lg);
      overflow:hidden;box-shadow:var(--shadow-soft);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    }
    .feature-large:hover,.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bcebd9}
    .feature-large{display:grid;grid-template-columns:1fr .9fr;min-height:392px}
    .feature-large .feature-copy{padding:34px;display:flex;flex-direction:column;justify-content:space-between}
    .feature-large h3{font-size:28px;line-height:1.25;margin:12px 0;color:var(--ink)}
    .feature-large p,.feature-card p{color:var(--muted);margin-bottom:18px}
    .feature-img{position:relative;min-height:280px;background:var(--ink);overflow:hidden}
    .feature-img img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
    .feature-img:after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,17,15,.18),rgba(7,17,15,.54))}
    .small-grid{display:grid;gap:22px}
    .feature-card{padding:24px}
    .feature-icon{
      width:46px;height:46px;border-radius:16px;background:var(--mint-soft);color:#087250;
      display:grid;place-items:center;font-weight:950;margin-bottom:16px;
    }
    .feature-card h3{font-size:20px;margin-bottom:8px;color:var(--ink)}
    .text-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:900;color:#087250}
    .text-arrow span{transition:transform var(--ease)}
    .text-arrow:hover span{transform:translateX(4px)}
    .explain{
      background:linear-gradient(180deg,#eef8f4,#f8f5ee);
      border-top:1px solid #e3eee9;border-bottom:1px solid #e3eee9;
    }
    .split{
      display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;align-items:start;
    }
    .sticky-note{
      position:sticky;top:104px;background:var(--ink);color:#fff;border-radius:var(--radius-xl);
      padding:30px;overflow:hidden;box-shadow:0 24px 55px rgba(7,17,15,.18)
    }
    .sticky-note:after{
      content:"";position:absolute;right:-60px;bottom:-70px;width:210px;height:210px;border-radius:50%;
      background:rgba(57,243,181,.16)
    }
    .sticky-note h2{font-size:34px;line-height:1.25;margin-bottom:14px}
    .sticky-note p{color:#d0e2dc;margin-bottom:20px}
    .check-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
    .check-list li{display:flex;gap:10px;align-items:flex-start;color:#e6f4ef}
    .check-list li:before{content:"✓";width:22px;height:22px;border-radius:50%;background:var(--mint);color:var(--ink);display:grid;place-items:center;font-weight:950;flex:0 0 auto;margin-top:3px}
    .timeline{display:grid;gap:16px}
    .timeline-item{
      display:grid;grid-template-columns:120px 1fr;gap:18px;background:var(--white);
      border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 10px 28px rgba(8,31,26,.05);
    }
    .timeline-item time{font-weight:900;color:#087250}
    .timeline-item h3{font-size:20px;margin-bottom:5px;color:var(--ink)}
    .timeline-item p{margin-bottom:0;color:var(--muted)}
    .proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .proof-card{
      background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow-soft)
    }
    .proof-card strong{display:block;font-size:34px;color:var(--ink);line-height:1;margin-bottom:8px}
    .proof-card span{display:block;font-weight:850;margin-bottom:8px;color:#087250}
    .proof-card p{margin:0;color:var(--muted);font-size:15px}
    .category-entry{
      display:grid;grid-template-columns:1fr .72fr;gap:22px;align-items:stretch;
      background:var(--ink);border-radius:var(--radius-xl);padding:24px;color:#fff;position:relative;overflow:hidden;
    }
    .category-entry:before{
      content:"";position:absolute;inset:0;background:
      radial-gradient(circle at 12% 12%,rgba(57,243,181,.2),transparent 25%),
      radial-gradient(circle at 88% 70%,rgba(255,159,67,.16),transparent 24%);
    }
    .category-copy{position:relative;z-index:1;padding:18px 10px 18px 18px}
    .category-copy h2{font-size:34px;line-height:1.22;margin:12px 0}
    .category-copy p{color:#d4e5df;max-width:650px}
    .category-media{position:relative;z-index:1;border-radius:24px;overflow:hidden;min-height:300px}
    .category-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
    .category-media:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,15,.06),rgba(7,17,15,.46))}
    .notice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .notice{
      display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
      border-radius:22px;padding:22px;transition:var(--ease);box-shadow:0 8px 22px rgba(8,31,26,.05)
    }
    .notice:hover{transform:translateY(-3px);border-color:#bcebd9}
    .notice b{
      width:42px;height:42px;border-radius:15px;background:#fff3e3;color:#9b5709;
      display:grid;place-items:center;flex:0 0 auto
    }
    .notice h3{font-size:19px;margin-bottom:5px}
    .notice p{margin:0;color:var(--muted);font-size:15px}
    .faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:start}
    .faq-intro{
      background:var(--white);border:1px solid var(--line);border-radius:var(--radius-xl);
      padding:30px;box-shadow:var(--shadow-soft)
    }
    .faq-intro h2{font-size:34px;line-height:1.25;margin-bottom:12px}
    .faq-intro p{color:var(--muted);margin-bottom:18px}
    .faq-list{display:grid;gap:12px}
    .faq-item{
      background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;
      transition:border-color var(--ease),box-shadow var(--ease)
    }
    .faq-item:hover{border-color:#bcebd9;box-shadow:0 12px 26px rgba(8,31,26,.06)}
    .faq-question{
      width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;
      padding:20px 22px;background:transparent;color:var(--ink);text-align:left;font-weight:900
    }
    .faq-question .plus{
      width:28px;height:28px;border-radius:50%;background:#edf8f4;color:#087250;
      display:grid;place-items:center;flex:0 0 auto;transition:transform var(--ease)
    }
    .faq-answer{display:none;padding:0 22px 20px;color:var(--muted);font-size:15px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .plus{transform:rotate(45deg);background:var(--mint);color:var(--ink)}
    .feedback{
      display:grid;grid-template-columns:.9fr 1.1fr;gap:26px;background:#fff;border:1px solid var(--line);
      border-radius:var(--radius-xl);padding:26px;box-shadow:var(--shadow-soft)
    }
    .feedback-copy{
      border-radius:24px;background:linear-gradient(160deg,#eefaf5,#fff6e7);padding:28px;
      display:flex;flex-direction:column;justify-content:center;
    }
    .feedback-copy h2{font-size:32px;line-height:1.25;margin-bottom:12px}
    .feedback-copy p{color:var(--muted)}
    .form-grid{display:grid;gap:14px}
    .field{display:grid;gap:7px}
    .field label{font-weight:850;color:var(--ink);font-size:14px}
    .field input,.field textarea,.field select{
      width:100%;border:1px solid var(--line);border-radius:15px;background:#fbfdfc;padding:13px 14px;
      color:var(--text);min-height:48px;transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
    }
    .field textarea{min-height:118px;resize:vertical}
    .field input:focus,.field textarea:focus,.field select:focus{
      outline:none;border-color:#74dfbd;box-shadow:0 0 0 4px rgba(57,243,181,.12);background:#fff
    }
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .cta{
      padding:70px 0 88px;
    }
    .cta-panel{
      position:relative;overflow:hidden;background:var(--ink);color:#fff;border-radius:34px;
      padding:42px;display:flex;align-items:center;justify-content:space-between;gap:28px;
      box-shadow:0 24px 65px rgba(7,17,15,.2)
    }
    .cta-panel:before{
      content:"";position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(7,17,15,.82),rgba(7,17,15,.94)),url('/assets/images/backpic/back-2.webp');
      background-size:cover;background-position:center;z-index:0
    }
    .cta-panel:after{
      content:"";position:absolute;right:-80px;top:-100px;width:260px;height:260px;border-radius:50%;background:rgba(57,243,181,.18);z-index:0
    }
    .cta-panel > *{position:relative;z-index:1}
    .cta-panel h2{font-size:34px;line-height:1.25;margin-bottom:10px}
    .cta-panel p{color:#d5e6e0;margin:0;max-width:720px}
    .site-footer{
      background:#091411;color:#c9d8d3;padding:54px 0 26px;
    }
    .footer-grid{
      display:grid;grid-template-columns:1.15fr .65fr .85fr;gap:34px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.1)
    }
    .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;color:#fff;font-weight:900}
    .footer-brand .brand-mark{box-shadow:none;background:#10231f}
    .footer-about p{margin:0;color:#a9bdb7;max-width:520px}
    .footer-col h3{font-size:16px;color:#fff;margin-bottom:14px}
    .footer-links{display:grid;gap:10px}
    .footer-links a{color:#a9bdb7;transition:color var(--ease),transform var(--ease)}
    .footer-links a:hover{color:var(--mint);transform:translateX(3px)}
    .disclaimer{
      background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.09);border-radius:18px;padding:16px;
      color:#a9bdb7;font-size:14px
    }
    .copyright{
      display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;padding-top:22px;color:#8fa29c;font-size:14px
    }
    .mobile-menu{
      display:none;border-top:1px solid var(--line);padding:12px 0 18px;background:rgba(248,253,250,.96)
    }
    .mobile-menu a{display:block;padding:12px 16px;border-radius:14px;font-weight:850;color:var(--ink)}
    .mobile-menu a.active{background:var(--ink);color:var(--mint)}
    .mobile-menu .btn{margin:10px 16px 0;width:calc(100% - 32px)}
    @media (max-width:1024px){
      .container{width:min(var(--container),calc(100% - 48px))}
      .hero-grid,.guide-panel,.split,.faq-wrap,.feedback{grid-template-columns:1fr}
      .entry-console{max-width:720px}
      .sticky-note{position:relative;top:auto}
      .mosaic{grid-template-columns:1fr}
      .feature-large{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-about{grid-column:1/-1}
      .category-entry{grid-template-columns:1fr}
    }
    @media (max-width:768px){
      .container{width:calc(100% - 32px)}
      .nav-wrap{height:68px}
      .main-nav,.nav-actions .desktop-cta{display:none}
      .menu-toggle{display:flex}
      .site-header.menu-open .mobile-menu{display:block}
      .site-header.menu-open .menu-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
      .site-header.menu-open .menu-toggle span:nth-child(2){opacity:0}
      .site-header.menu-open .menu-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
      .brand-text strong{font-size:16px}
      .brand-text span{display:none}
      .hero{padding:48px 0 26px;border-bottom-left-radius:24px;border-bottom-right-radius:24px}
      .hero-grid{gap:32px}
      .hero-lead{font-size:16px}
      .hero-cta .btn{width:100%}
      .index-strip{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;padding:8px}
      .index-strip a{min-width:132px;scroll-snap-align:start}
      .section{padding:60px 0}
      .section.tight{padding:48px 0}
      .section-head{display:block}
      .section-desc{margin-top:12px}
      .guide-panel,.feedback{padding:16px;border-radius:24px}
      .guide-visual{min-height:340px}
      .guide-step{grid-template-columns:44px 1fr;padding:16px}
      .guide-step .num{width:44px;height:44px;border-radius:15px}
      .proof-grid,.notice-grid{grid-template-columns:1fr}
      .timeline-item{grid-template-columns:1fr;gap:8px}
      .form-row{grid-template-columns:1fr}
      .cta-panel{display:block;padding:30px;border-radius:26px}
      .cta-panel .btn{margin-top:22px;width:100%}
      .footer-grid{grid-template-columns:1fr}
      .console-bottom{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .hero h1{font-size:32px}
      .section-title,.sticky-note h2,.faq-intro h2,.cta-panel h2,.category-copy h2{font-size:28px}
      .feature-large .feature-copy,.feature-card,.sticky-note,.faq-intro,.feedback-copy{padding:22px}
      .category-entry{padding:16px}
      .proof-card strong{font-size:30px}
      .footer-brand{align-items:flex-start}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }

/* roulang page: category1 */
:root{
      --ink:#101616;
      --ink-2:#172020;
      --muted:#60706d;
      --soft:#f5f8f6;
      --soft-2:#eef5f1;
      --panel:#ffffff;
      --line:#dbe7e2;
      --mint:#2df0ad;
      --mint-2:#c8ffe9;
      --orange:#ff9d43;
      --shadow:0 22px 55px rgba(16,35,29,.10);
      --shadow-sm:0 12px 30px rgba(16,35,29,.08);
      --radius:22px;
      --radius-lg:30px;
      --container:1200px;
      --header-h:78px;
      --ease:.22s ease;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:linear-gradient(180deg,#fbfdfb 0%,#f1f6f3 46%,#ffffff 100%);color:var(--ink);line-height:1.78;font-size:16px;overflow-x:hidden}
    a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0;background:none}
    :focus-visible{outline:3px solid rgba(45,240,173,.55);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,231,226,.86)}
    .nav-wrap{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;min-width:260px}
    .brand-mark{width:42px;height:42px;border-radius:14px;background:radial-gradient(circle at 32% 28%,#fff 0 10%,transparent 12%),linear-gradient(135deg,var(--mint),#79ffd0 45%,#10201b 46% 100%);box-shadow:0 14px 28px rgba(45,240,173,.25);position:relative;flex:0 0 auto}
    .brand-mark:after{content:"";position:absolute;right:8px;bottom:8px;width:11px;height:11px;border-right:3px solid var(--mint);border-top:3px solid var(--mint);transform:rotate(45deg)}
    .brand-text{display:flex;flex-direction:column;line-height:1.2}
    .brand-text strong{font-size:18px;letter-spacing:.2px;color:var(--ink)}
    .brand-text span{font-size:12px;color:var(--muted);margin-top:3px}
    .main-nav{display:flex;align-items:center;gap:8px;padding:6px;background:#f2f7f4;border:1px solid var(--line);border-radius:999px}
    .main-nav a,.mobile-menu a:not(.btn){padding:10px 16px;border-radius:999px;font-weight:700;color:#43534f;font-size:14px}
    .main-nav a:hover,.mobile-menu a:not(.btn):hover{color:var(--ink);background:#fff}
    .main-nav a.active,.mobile-menu a.active{background:var(--ink);color:#fff;box-shadow:0 10px 22px rgba(16,22,22,.12)}
    .nav-actions{display:flex;align-items:center;gap:12px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:12px 20px;border-radius:999px;font-weight:800;letter-spacing:.1px;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease)}
    .btn-primary{background:var(--mint);color:#10201b;box-shadow:0 16px 34px rgba(45,240,173,.28)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 42px rgba(45,240,173,.38)}
    .btn-secondary{background:#fff;border:1px solid var(--line);color:var(--ink)}
    .btn-secondary:hover{background:var(--soft-2);transform:translateY(-2px)}
    .btn-dark{background:var(--ink);color:#fff;border:1px solid rgba(255,255,255,.08)}
    .btn-dark:hover{background:#20302d;transform:translateY(-2px)}
    .menu-toggle{display:none;width:46px;height:46px;border-radius:14px;background:#f2f7f4;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px}
    .menu-toggle span{width:20px;height:2px;background:var(--ink);border-radius:2px;transition:var(--ease)}
    .menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .menu-toggle.open span:nth-child(2){opacity:0}
    .menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
    .mobile-menu{display:none;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line)}
    .mobile-menu .container{padding:12px 0 18px;display:grid;gap:10px}
    .section{padding:88px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:32px}
    .section-kicker{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:var(--mint-2);color:#16342b;font-size:13px;font-weight:800;margin-bottom:12px}
    .section h2{font-size:34px;line-height:1.22;letter-spacing:-.6px;margin:0;color:var(--ink)}
    .section-desc{max-width:620px;color:var(--muted);font-size:16px}
    .hero-category{position:relative;overflow:hidden;padding:54px 0 70px;background:linear-gradient(135deg,#edf6f2 0%,#fbf8f0 52%,#f7fbf8 100%);border-bottom:1px solid var(--line)}
    .hero-category:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(16,22,22,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(16,22,22,.04) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(90deg,#000,transparent 78%)}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.02fr .88fr;gap:44px;align-items:center}
    .breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:14px;color:var(--muted);margin-bottom:18px}
    .breadcrumbs a:hover{color:var(--ink)}
    .breadcrumbs span:last-child{color:var(--ink);font-weight:700}
    .hero-category h1{font-size:48px;line-height:1.16;letter-spacing:-1px;margin-bottom:18px;color:var(--ink)}
    .hero-lead{font-size:18px;color:#445550;max-width:720px;margin-bottom:22px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
    .filter-strip{display:flex;gap:10px;overflow-x:auto;padding:8px 2px 2px;scrollbar-width:none}
    .filter-strip::-webkit-scrollbar{display:none}
    .filter-chip{white-space:nowrap;padding:9px 15px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:800;color:#455550;font-size:14px;box-shadow:0 8px 20px rgba(16,35,29,.04)}
    .filter-chip.active{background:var(--ink);border-color:var(--ink);color:#fff}
    .hero-visual{border-radius:var(--radius-lg);overflow:hidden;position:relative;box-shadow:var(--shadow);min-height:360px;background:#10201b}
    .hero-visual img{width:100%;height:100%;min-height:360px;object-fit:cover;filter:saturate(.92) contrast(1.02)}
    .hero-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,22,22,.04),rgba(16,22,22,.76))}
    .visual-card{position:absolute;left:22px;right:22px;bottom:22px;z-index:2;background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.75);border-radius:22px;padding:18px;box-shadow:0 18px 36px rgba(0,0,0,.16)}
    .visual-card strong{display:block;font-size:18px;margin-bottom:6px}.visual-card p{color:var(--muted);font-size:14px;line-height:1.65}
    .quick-index{margin-top:-28px;position:relative;z-index:5}
    .index-panel{background:var(--ink);border-radius:26px;padding:18px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;box-shadow:var(--shadow)}
    .index-item{padding:18px;border-radius:18px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);color:#dbe7e2}
    .index-item span{display:block;color:var(--mint);font-weight:900;font-size:13px;margin-bottom:5px}.index-item b{font-size:16px;color:#fff}.index-item:hover{background:rgba(45,240,173,.12);transform:translateY(-2px)}
    .entry-layout{display:grid;grid-template-columns:.95fr 1.05fr;gap:28px;align-items:stretch}
    .step-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-sm)}
    .step{display:grid;grid-template-columns:46px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
    .step:first-child{padding-top:0}.step:last-child{border-bottom:0;padding-bottom:0}
    .step-num{width:46px;height:46px;border-radius:16px;background:var(--mint-2);display:grid;place-items:center;font-weight:900;color:#10201b}
    .step h3{font-size:19px;margin-bottom:4px}.step p{color:var(--muted);font-size:15px}
    .notice-card{border-radius:var(--radius-lg);padding:28px;background:linear-gradient(145deg,#10201b,#1b2a27);color:#fff;position:relative;overflow:hidden;box-shadow:var(--shadow)}
    .notice-card:before{content:"";position:absolute;right:-90px;top:-90px;width:230px;height:230px;border-radius:50%;background:rgba(45,240,173,.22)}
    .notice-card img{height:210px;width:100%;object-fit:cover;border-radius:22px;margin:16px 0;opacity:.82}
    .notice-card p{color:#c4d4cf}.notice-card .warn{margin-top:18px;padding:14px 16px;border-radius:16px;background:rgba(255,157,67,.14);border:1px solid rgba(255,157,67,.34);color:#ffe2c3;font-size:14px}
    .cards-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px;align-items:stretch}
    .info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
    .info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bfeadc}.info-card h3{font-size:20px;margin:12px 0 8px}.info-card p{color:var(--muted);font-size:15px}.info-card.large{grid-row:span 2;padding:0;overflow:hidden}.info-card.large img{height:230px;width:100%;object-fit:cover}.info-card.large .card-body{padding:24px}.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 11px;border-radius:999px;background:#eef8f3;color:#18342c;border:1px solid #d8eee5;font-size:13px;font-weight:800}.badge.orange{background:#fff2e5;color:#6d3a0d;border-color:#ffd8ad}.card-arrow{margin-top:18px;display:inline-flex;align-items:center;gap:8px;font-weight:900;color:#15382f}.card-arrow:after{content:"→";transition:transform var(--ease)}.info-card:hover .card-arrow:after{transform:translateX(4px)}
    .scenario{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.scenario-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-height:210px}.scenario-card .icon{width:44px;height:44px;border-radius:15px;background:var(--ink);color:var(--mint);display:grid;place-items:center;font-weight:900;margin-bottom:18px}.scenario-card h3{font-size:20px;margin-bottom:8px}.scenario-card p{color:var(--muted);font-size:15px}
    .compare-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:26px}.hint-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-sm)}.hint-box ul{list-style:none;display:grid;gap:13px;margin-top:14px}.hint-box li{display:flex;gap:10px;color:#40514d}.hint-box li:before{content:"✓";width:22px;height:22px;border-radius:50%;background:var(--mint-2);display:grid;place-items:center;flex:0 0 auto;color:#12332a;font-weight:900;font-size:12px}.table-list{display:grid;gap:14px}.table-row{display:grid;grid-template-columns:160px 1fr;gap:18px;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:20px}.table-row b{color:var(--ink)}.table-row p{color:var(--muted);font-size:15px}
    .faq-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:28px}.faq-aside{background:linear-gradient(145deg,#10201b,#1e2d2a);border-radius:var(--radius-lg);padding:28px;color:#fff}.faq-aside p{color:#c7d7d2;margin-top:10px}.faq-list{display:grid;gap:12px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}.faq-q{width:100%;min-height:58px;padding:16px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;font-weight:900;color:var(--ink)}.faq-q span:last-child{width:28px;height:28px;border-radius:50%;background:var(--soft-2);display:grid;place-items:center;transition:transform var(--ease)}.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}.faq-a p{padding:0 18px 18px;color:var(--muted);font-size:15px}.faq-item.open .faq-a{max-height:160px}.faq-item.open .faq-q span:last-child{transform:rotate(45deg);background:var(--mint-2)}
    .feedback-panel{display:grid;grid-template-columns:.92fr 1.08fr;gap:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-sm)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field label{font-size:14px;font-weight:800;color:#344641}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:15px;padding:12px 14px;background:#fbfdfb;color:var(--ink);transition:border-color var(--ease),box-shadow var(--ease),background var(--ease)}.field textarea{min-height:118px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--mint);box-shadow:0 0 0 4px rgba(45,240,173,.14);background:#fff}.form-tip{font-size:13px;color:var(--muted);margin-top:12px}
    .cta-band{padding:74px 0}.cta-panel{position:relative;overflow:hidden;border-radius:32px;padding:42px;background:linear-gradient(135deg,#101616,#1d2d29);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:28px;box-shadow:var(--shadow)}.cta-panel:before{content:"";position:absolute;right:-90px;bottom:-120px;width:310px;height:310px;border-radius:50%;background:rgba(45,240,173,.20)}.cta-panel h2{font-size:32px;line-height:1.25;margin-bottom:10px}.cta-panel p{color:#c8d8d3;max-width:690px}.cta-panel .btn{position:relative;z-index:2;flex:0 0 auto}
    .site-footer{background:#101616;color:#c8d5d1;padding:56px 0 26px}.footer-grid{display:grid;grid-template-columns:1.35fr .65fr 1fr;gap:36px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.10)}.footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-size:19px;font-weight:900;margin-bottom:14px}.footer-about p,.disclaimer{color:#aebdb8;font-size:14px;line-height:1.8}.footer-col h3{color:#fff;font-size:16px;margin-bottom:14px}.footer-links{display:grid;gap:10px}.footer-links a{color:#b8c7c2;font-size:14px}.footer-links a:hover{color:var(--mint)}.copyright{padding-top:22px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:#8fa09a;font-size:13px}
    @media (max-width:1024px){.container{width:min(var(--container),calc(100% - 48px))}.desktop-cta{display:none}.hero-grid,.entry-layout,.compare-layout,.faq-grid,.feedback-panel{grid-template-columns:1fr}.cards-grid{grid-template-columns:1fr 1fr}.info-card.large{grid-row:auto}.index-panel{grid-template-columns:repeat(2,1fr)}.scenario-grid{grid-template-columns:1fr 1fr}.section h2{font-size:30px}.hero-category h1{font-size:40px}.footer-grid{grid-template-columns:1fr 1fr}}
    @media (max-width:768px){:root{--header-h:70px}.container{width:calc(100% - 32px)}.main-nav{display:none}.menu-toggle{display:flex}.mobile-menu.show{display:block}.brand{min-width:0}.brand-text span{display:none}.brand-text strong{font-size:16px}.hero-category{padding:38px 0 56px}.hero-category h1{font-size:34px}.hero-lead{font-size:16px}.hero-actions .btn{width:100%}.hero-visual,.hero-visual img{min-height:280px}.index-panel{grid-template-columns:1fr;padding:12px;border-radius:22px}.quick-index{margin-top:-18px}.section{padding:62px 0}.section-head{display:block}.section-desc{margin-top:10px}.cards-grid,.scenario-grid{grid-template-columns:1fr}.table-row{grid-template-columns:1fr;gap:6px}.form-grid{grid-template-columns:1fr}.cta-panel{display:block;padding:30px}.cta-panel .btn{width:100%;margin-top:20px}.footer-grid{grid-template-columns:1fr}.copyright{display:grid}}
    @media (max-width:520px){.container{width:calc(100% - 28px)}.nav-wrap{gap:10px}.brand-mark{width:38px;height:38px}.hero-category h1{font-size:30px}.section h2,.cta-panel h2{font-size:26px}.step{grid-template-columns:40px 1fr}.step-num{width:40px;height:40px;border-radius:14px}.visual-card{left:14px;right:14px;bottom:14px}.filter-chip{font-size:13px;padding:8px 12px}.notice-card,.step-list,.feedback-panel{padding:20px}}