:root{
    --banana:#FFD93D;
    --banana-deep:#F5C400;
    --pink:#FF6FA5;
    --pink-deep:#E84B87;
    --ink:#121212;
    --paper:#FFF8E1;
    --line:4px solid #121212;
    --shadow:6px 6px 0 #121212;
    --shadow-sm:4px 4px 0 #121212;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--banana);
    color:var(--ink);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    line-height:1.7;
    overflow-x:hidden;
    background-image:radial-gradient(#121212 1px, transparent 1px);
    background-size:22px 22px;
  }
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;}
  .wrap{max-width:1100px;margin:0 auto;padding:0 18px;}
  .panel{
    background:var(--paper);
    border:var(--line);
    box-shadow:var(--shadow);
    border-radius:14px;
  }

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:var(--banana);
    border-bottom:var(--line);
  }
  .header-inner{
    display:flex;align-items:center;gap:14px;
    padding:10px 18px;max-width:1100px;margin:0 auto;
    flex-wrap:wrap;
  }
  .brand{display:flex;align-items:center;gap:9px;font-weight:900;font-size:20px;letter-spacing:1px;}
  .brand img{height:34px;width:auto;border:3px solid var(--ink);border-radius:8px;background:#fff;padding:2px;}
  .top-nav{
    display:flex;gap:6px;flex-wrap:wrap;margin-left:auto;
  }
  .top-nav a{
    font-size:13px;font-weight:700;
    padding:5px 10px;
    border:3px solid var(--ink);
    border-radius:999px;
    background:#fff;
    box-shadow:3px 3px 0 var(--ink);
    transition:transform .12s ease, box-shadow .12s ease, background .12s ease;
    white-space:nowrap;
  }
  .top-nav a:hover{background:var(--pink);color:#fff;transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ink);}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-weight:900;font-size:15px;
    padding:11px 22px;
    background:var(--pink);
    color:#fff;
    border:var(--line);
    border-radius:12px;
    box-shadow:var(--shadow-sm);
    cursor:pointer;
    transition:transform .12s ease, box-shadow .12s ease;
    font-family:inherit;
  }
  .btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink);}
  .btn:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--ink);}
  .btn.ghost{background:#fff;color:var(--ink);}
  .btn.banana{background:var(--banana-deep);color:var(--ink);}

  /* ---------- hero ---------- */
  .hero{padding:36px 0 46px;}
  .hero-grid{
    display:grid;
    grid-template-columns:1.15fr .85fr;
    gap:26px;
    align-items:center;
  }
  .kicker{
    display:inline-block;
    background:var(--ink);color:var(--banana);
    font-size:12px;font-weight:800;letter-spacing:2px;
    padding:4px 12px;border-radius:6px;transform:rotate(-2deg);
    margin-bottom:14px;
  }
  h1{
    font-size:clamp(28px,4.4vw,46px);
    line-height:1.22;
    font-weight:900;
    letter-spacing:.5px;
    text-shadow:3px 3px 0 var(--pink);
  }
  .hero-lead{margin-top:14px;font-size:16px;max-width:36em;}
  .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px;}
  .hero-note{margin-top:12px;font-size:13px;color:#4a4a4a;}
  .hero-art{position:relative;display:flex;justify-content:center;}
  .phone{
    width:min(260px,80%);
    border:var(--line);
    border-radius:22px;
    overflow:hidden;
    box-shadow:8px 8px 0 var(--ink);
    transform:rotate(3deg);
    background:#fff;
  }
  .phone img{width:100%;height:auto;}
  .sticker{
    position:absolute;top:-14px;right:2px;
    background:var(--pink);color:#fff;
    border:3px solid var(--ink);
    border-radius:12px;
    padding:6px 12px;font-weight:900;font-size:13px;
    transform:rotate(-7deg);
    box-shadow:3px 3px 0 var(--ink);
  }

  /* ---------- section base ---------- */
  section{padding:34px 0;}
  .sec-head{margin-bottom:20px;}
  .sec-head h2{
    display:inline-block;
    font-size:clamp(22px,3vw,30px);
    font-weight:900;
    background:#fff;
    border:var(--line);
    border-radius:10px;
    padding:6px 16px;
    box-shadow:var(--shadow-sm);
    transform:rotate(-1deg);
  }
  .sec-head p{margin-top:12px;font-size:15px;max-width:44em;color:#2c2c2c;}

  /* ---------- category cards ---------- */
  .cat-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:16px;
  }
  .cat-card{
    background:#fff;border:var(--line);border-radius:14px;
    box-shadow:var(--shadow-sm);
    overflow:hidden;
    transition:transform .15s ease;
  }
  .cat-card:hover{transform:translateY(-4px) rotate(-.6deg);}
  .cat-card figure{aspect-ratio:3/4;overflow:hidden;border-bottom:var(--line);}
  .cat-card figure img{width:100%;height:100%;object-fit:cover;}
  .cat-body{padding:12px 13px 16px;}
  .cat-body h3{font-size:17px;font-weight:900;margin-bottom:6px;}
  .cat-body p{font-size:13px;color:#3a3a3a;}

  /* ---------- 长生诀 feature ---------- */
  .feature{
    display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:center;
    background:var(--paper);border:var(--line);border-radius:18px;
    box-shadow:var(--shadow);padding:20px;
  }
  .feature-img{
    border:var(--line);border-radius:14px;overflow:hidden;
    box-shadow:var(--shadow-sm);
    transform:rotate(-2deg);
    background:#fff;
  }
  .feature-img img{width:100%;height:auto;}
  .feature h2{font-size:clamp(22px,3vw,30px);font-weight:900;margin-bottom:12px;}
  .feature p{font-size:15px;margin-bottom:12px;}
  .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 4px;}
  .tag{
    font-size:12px;font-weight:800;
    background:var(--banana);border:3px solid var(--ink);
    border-radius:999px;padding:3px 12px;
  }

  /* ---------- ranking ---------- */
  .rank-list{display:grid;gap:12px;}
  .rank-item{
    display:flex;align-items:center;gap:14px;
    background:#fff;border:var(--line);border-radius:12px;
    box-shadow:var(--shadow-sm);
    padding:10px 14px;
  }
  .rank-no{
    flex:0 0 auto;
    width:38px;height:38px;border-radius:50%;
    border:3px solid var(--ink);
    background:var(--banana);
    display:flex;align-items:center;justify-content:center;
    font-weight:900;font-size:17px;
  }
  .rank-item:nth-child(1) .rank-no{background:var(--pink);color:#fff;}
  .rank-poster{width:52px;height:70px;object-fit:cover;border:3px solid var(--ink);border-radius:8px;flex:0 0 auto;}
  .rank-txt{flex:1;min-width:0;}
  .rank-txt strong{display:block;font-size:15px;}
  .rank-txt span{font-size:12px;color:#5a5a5a;}

  /* ---------- community / topics ---------- */
  .two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
  .board{
    background:#fff;border:var(--line);border-radius:16px;
    box-shadow:var(--shadow);padding:18px;
  }
  .board h2{font-size:22px;font-weight:900;margin-bottom:10px;}
  .board h3{font-size:16px;font-weight:900;margin:14px 0 6px;}
  .board p{font-size:14px;color:#333;}
  .topic-list{list-style:none;display:grid;gap:9px;margin-top:10px;}
  .topic-list li{
    border:3px dashed var(--ink);border-radius:10px;
    padding:8px 12px;font-size:13.5px;font-weight:700;
    background:var(--paper);
  }

  /* ---------- tutorial steps ---------- */
  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
  .step{
    background:#fff;border:var(--line);border-radius:14px;
    box-shadow:var(--shadow-sm);padding:16px;
  }
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:30px;height:30px;border-radius:8px;
    background:var(--pink);color:#fff;font-weight:900;
    border:3px solid var(--ink);
    margin-bottom:10px;
  }
  .step h3{font-size:16px;font-weight:900;margin-bottom:6px;}
  .step p{font-size:13.5px;color:#3a3a3a;}

  /* ---------- certificate ---------- */
  .cert-row{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:center;}
  .cert-panel{
    background:var(--ink);color:var(--paper);
    border:var(--line);border-radius:16px;
    box-shadow:var(--shadow);padding:22px;
  }
  .cert-panel h2{font-size:23px;font-weight:900;color:var(--banana);margin-bottom:10px;}
  .cert-panel p{font-size:14px;color:#e9e2c8;margin-bottom:10px;}
  .cert-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;}
  .cert-badges span{
    border:2px solid var(--banana);
    color:var(--banana);
    border-radius:999px;
    font-size:12px;font-weight:800;
    padding:3px 12px;
  }
  .cert-pic{border:var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);background:#fff;transform:rotate(2deg);}

  /* ---------- gallery ---------- */
  .gallery-scroll{
    display:flex;gap:14px;overflow-x:auto;padding:6px 4px 18px;
    scroll-snap-type:x mandatory;
  }
  .gallery-scroll::-webkit-scrollbar{height:10px;}
  .gallery-scroll::-webkit-scrollbar-thumb{background:var(--ink);border-radius:6px;}
  .g-item{
    flex:0 0 auto;width:160px;
    border:var(--line);border-radius:12px;overflow:hidden;
    box-shadow:var(--shadow-sm);background:#fff;
    scroll-snap-align:start;
  }
  .g-item img{width:100%;height:216px;object-fit:cover;}
  .g-item figcaption{font-size:12px;font-weight:700;padding:7px 9px;}

  /* ---------- CTA ---------- */
  .cta-box{
    background:var(--pink);
    color:#fff;
    border:var(--line);
    border-radius:20px;
    box-shadow:var(--shadow);
    padding:28px 22px;
    text-align:center;
  }
  .cta-box h2{font-size:clamp(22px,3vw,30px);font-weight:900;text-shadow:2px 2px 0 var(--ink);}
  .cta-box p{margin:10px auto 18px;max-width:36em;font-size:15px;}
  .cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

  /* ---------- faq ---------- */
  .faq-list{display:grid;gap:12px;}
  details{
    background:#fff;border:var(--line);border-radius:12px;
    box-shadow:var(--shadow-sm);padding:12px 16px;
  }
  summary{font-weight:900;font-size:15px;cursor:pointer;list-style:none;}
  summary::-webkit-details-marker{display:none;}
  summary::before{content:"? ";color:var(--pink-deep);}
  details p{margin-top:8px;font-size:14px;color:#333;}

  /* ---------- footer ---------- */
  .site-footer{
    margin-top:34px;
    border-top:var(--line);
    background:#fffdf3;
    padding:22px 0 30px;
    font-size:12px;color:#777;
  }
  .site-footer .wrap{display:flex;flex-direction:column;gap:7px;}
  .site-footer a{color:#777;text-decoration:underline;}
  .search-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px;}
  .search-tags span{
    border:2px solid #d8d2b8;border-radius:999px;
    padding:2px 10px;color:#8a8468;
  }

  /* ---------- modal ---------- */
  .modal-mask{
    position:fixed;inset:0;z-index:200;
    background:rgba(0,0,0,.55);
    display:none;align-items:center;justify-content:center;
    padding:20px;
  }
  .modal-mask.open{display:flex;}
  .modal-box{
    background:#fff;border:var(--line);border-radius:16px;
    box-shadow:8px 8px 0 var(--ink);
    max-width:420px;width:100%;padding:20px;
  }
  .modal-box h3{font-size:17px;font-weight:900;margin-bottom:10px;line-height:1.5;}
  .copy-line{
    display:flex;gap:8px;margin:12px 0;
  }
  .copy-line input{
    flex:1;min-width:0;
    border:3px solid var(--ink);border-radius:10px;
    padding:9px 10px;font-size:13px;font-family:inherit;
    color:#121212;background:var(--paper);
  }
  .modal-actions{display:flex;gap:10px;justify-content:flex-end;}

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .cat-grid{grid-template-columns:repeat(3,1fr);}
    .hero-grid{grid-template-columns:1fr 1fr;gap:18px;}
  }
  @media (max-width:768px){
    .header-inner{padding:9px 14px;gap:8px;}
    .brand{font-size:17px;}
    .brand img{height:30px;}
    .top-nav{margin-left:0;width:100%;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px;}
    .top-nav a{font-size:12px;padding:4px 9px;flex:0 0 auto;}
    .hero{padding:24px 0 34px;}
    .hero-grid{grid-template-columns:1fr;}
    .hero-art{order:-1;}
    .phone{width:190px;transform:rotate(2deg) translateY(-4px);}
    .sticker{top:-10px;right:calc(50% - 120px);font-size:12px;}
    .cat-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
    .feature{grid-template-columns:1fr;padding:16px;}
    .steps{grid-template-columns:1fr;}
    .two-col{grid-template-columns:1fr;}
    .cert-row{grid-template-columns:1fr;}
    .g-item{width:135px;}
    .g-item img{height:182px;}
    .rank-poster{width:44px;height:60px;}
    .hero-actions .btn{flex:1 1 auto;}
    .cta-actions .btn{flex:1 1 auto;}
  }