:root{
    --water-top:#dff2ec;
    --water-mid:#cfe8f3;
    --water-bottom:#b9dcf0;
    --leaf:#6fb98f;
    --leaf-deep:#3f8a63;
    --frog:#2f6d5a;
    --orange:#f0a15a;
    --ink:#22423a;
    --ink-soft:#4a6b62;
    --mist:rgba(255,255,255,.55);
    --card:rgba(255,255,255,.72);
    --shadow:0 18px 40px rgba(47,109,90,.18);
    --radius:24px;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
    color:var(--ink);
    background:linear-gradient(180deg,var(--water-top) 0%,var(--water-mid) 42%,var(--water-bottom) 100%);
    background-attachment:fixed;
    line-height:1.7;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  .wrap{width:min(1180px,92vw);margin:0 auto;}
  .ripple-bg{
    position:fixed;inset:0;pointer-events:none;z-index:0;
    background-image:
      radial-gradient(circle at 20% 30%,rgba(255,255,255,.45) 0 2px,transparent 3px),
      radial-gradient(circle at 70% 60%,rgba(255,255,255,.35) 0 2px,transparent 3px),
      radial-gradient(circle at 45% 85%,rgba(255,255,255,.4) 0 2px,transparent 3px);
    background-size:340px 340px,420px 420px,300px 300px;
    opacity:.8;
  }
  main,header,footer{position:relative;z-index:1;}

  /* ============ 顶条 ============ */
  .topbar{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(255,255,255,.5);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    transition:background .4s ease,box-shadow .4s ease,opacity .4s;
  }
  .topbar.scrolled{background:rgba(255,255,255,.28);box-shadow:0 6px 24px rgba(47,109,90,.12);}
  .topbar-inner{
    display:flex;align-items:center;justify-content:space-between;
    height:52px;padding:0 4vw;
  }
  .brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.5px;}
  .brand img{height:32px;width:auto;border-radius:9px;}
  .dl-orb{
    width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;
    background:linear-gradient(140deg,var(--leaf),var(--frog));
    color:#fff;font-size:18px;display:grid;place-items:center;
    box-shadow:0 6px 18px rgba(47,109,90,.35);
    transition:transform .3s;
  }
  .dl-orb:hover{transform:scale(1.08);}
  .dl-panel{
    position:absolute;right:3vw;top:58px;width:min(340px,90vw);
    background:var(--card);backdrop-filter:blur(14px);
    border-radius:22px;padding:20px;box-shadow:var(--shadow);
    transform:scale(.2);transform-origin:top right;opacity:1;
    transition:transform .35s cubic-bezier(.22,1.1,.4,1);
    pointer-events:none;
  }
  .dl-panel.open{transform:scale(1);pointer-events:auto;}
  .dl-panel h3{font-size:15px;margin-bottom:12px;color:var(--frog);}
  .dl-row{display:flex;gap:10px;margin-bottom:12px;}
  .dl-row a{
    flex:1;text-align:center;padding:11px 6px;border-radius:14px;
    background:linear-gradient(140deg,var(--leaf),var(--frog));color:#fff;
    font-size:14px;font-weight:600;
  }
  .dl-row a.ios{background:linear-gradient(140deg,var(--orange),#e8873f);}
  .dl-note{font-size:12px;color:var(--ink-soft);line-height:1.6;border-top:1px dashed rgba(47,109,90,.3);padding-top:10px;}

  /* ============ 左侧导航岛 ============ */
  .nav-island{
    position:fixed;left:14px;top:50%;transform:translateY(-50%);
    z-index:55;display:flex;flex-direction:column;gap:12px;
  }
  .nav-island a{
    width:58px;height:58px;border-radius:50% 46% 52% 48%;
    display:grid;place-items:center;text-align:center;
    font-size:11px;line-height:1.25;color:var(--frog);font-weight:600;
    background:rgba(255,255,255,.68);
    box-shadow:0 6px 14px rgba(47,109,90,.16);
    transition:transform .3s,background .3s,box-shadow .3s;
  }
  .nav-island a:hover{
    transform:scale(1.1) rotate(-4deg);
    background:rgba(255,255,255,.95);
    box-shadow:0 10px 22px rgba(47,109,90,.28);
  }

  /* ============ Hero ============ */
  .hero{padding:96px 0 60px;text-align:center;position:relative;}
  .hero h1{
    font-size:clamp(30px,5vw,52px);line-height:1.28;letter-spacing:1px;
    color:var(--frog);font-weight:800;
  }
  .hero h1 em{font-style:normal;color:var(--orange);}
  .hero-sub{max-width:660px;margin:16px auto 0;color:var(--ink-soft);font-size:16px;}
  .hero-tip{margin-top:10px;font-size:13px;color:rgba(47,109,90,.7);}

  .hero-stage{
    position:relative;margin-top:38px;display:flex;
    align-items:flex-end;justify-content:center;gap:2vw;flex-wrap:wrap;
  }
  .lily{
    position:relative;border-radius:50%;
    background:radial-gradient(circle at 35% 30%,rgba(255,255,255,.85),rgba(111,185,143,.6) 62%,rgba(63,138,99,.8));
    box-shadow:var(--shadow);
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    padding:18px;text-align:center;
  }
  .lily-left{width:220px;height:220px;order:1;}
  .lily-center{width:min(320px,80vw);height:auto;aspect-ratio:3/4.2;order:2;border-radius:38px 38px 50% 50%;padding:0;overflow:hidden;}
  .lily-right{width:220px;height:220px;order:3;}
  .phone-shot{width:100%;height:100%;object-fit:cover;border-radius:34px 34px 46% 46%;}
  .lily h3{font-size:14px;color:var(--frog);margin-bottom:10px;}
  .btn-drop{
    display:inline-block;padding:11px 24px;border-radius:26px 26px 26px 6px;
    background:linear-gradient(140deg,var(--leaf),var(--frog));color:#fff;
    font-size:14px;font-weight:600;box-shadow:0 8px 20px rgba(47,109,90,.3);
    transition:transform .25s;
  }
  .btn-drop:hover{transform:translateY(-3px);}
  .btn-drop.alt{background:linear-gradient(140deg,var(--orange),#e8873f);border-radius:26px 6px 26px 26px;}
  .hero-data{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--frog);}
  .hero-data b{font-size:20px;display:block;color:var(--orange);}
  .bubble{
    position:absolute;border-radius:50%;
    background:rgba(255,255,255,.6);border:1px solid rgba(255,255,255,.9);
  }
  .b1{width:18px;height:18px;top:8%;left:12%;}
  .b2{width:12px;height:12px;top:26%;right:14%;}
  .b3{width:26px;height:26px;bottom:16%;left:22%;}
  .wave-fade{height:70px;background:linear-gradient(180deg,transparent,rgba(255,255,255,.4));}

  /* ============ 通用标题 ============ */
  .sec{padding:70px 0;}
  .sec-head{text-align:center;margin-bottom:38px;}
  .sec-head h2{font-size:clamp(23px,3.4vw,34px);color:var(--frog);font-weight:800;}
  .sec-head p{margin-top:10px;color:var(--ink-soft);font-size:15px;max-width:640px;margin-left:auto;margin-right:auto;}

  /* ============ 荷叶群分类 ============ */
  .pond{display:flex;flex-wrap:wrap;justify-content:center;gap:24px;}
  .pad{
    background:var(--card);border-radius:50% 50% 46% 54%;
    box-shadow:var(--shadow);padding:18px;
    transition:transform .35s,box-shadow .35s;
  }
  .pad:hover{transform:scale(1.03);box-shadow:0 24px 50px rgba(47,109,90,.26);}
  .pad-main{width:340px;border-radius:40px;}
  .pad-side{width:220px;}
  .pad h3{font-size:17px;color:var(--frog);margin-bottom:8px;}
  .pad p{font-size:13px;color:var(--ink-soft);}
  .heat{display:flex;gap:4px;margin-top:12px;}
  .heat i{width:22px;height:5px;border-radius:3px;background:rgba(47,109,90,.2);}
  .heat i.on{background:var(--orange);}
  .grid-cards{
    display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:14px;
  }
  .grid-cards figure{position:relative;border-radius:16px;overflow:hidden;box-shadow:0 8px 20px rgba(47,109,90,.16);}
  .grid-cards img{width:100%;aspect-ratio:3/4;object-fit:cover;transition:transform .4s;}
  .grid-cards figure:hover img{transform:scale(1.05);}
  .grid-cards figcaption{
    position:absolute;left:0;right:0;bottom:0;padding:20px 8px 6px;
    font-size:11px;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.65));
  }

  /* ============ 浮标排行榜 ============ */
  .buoys{display:flex;flex-direction:column;gap:20px;}
  .buoy{
    display:flex;align-items:center;gap:18px;
    background:var(--card);border-radius:var(--radius);
    padding:14px 20px;box-shadow:var(--shadow);
    animation:bob 5s ease-in-out infinite;
  }
  .buoy:nth-child(2){animation-delay:.6s;}
  .buoy:nth-child(3){animation-delay:1.2s;}
  .buoy:nth-child(4){animation-delay:1.8s;}
  .buoy:nth-child(5){animation-delay:2.4s;}
  @keyframes bob{0%,100%{transform:translateY(0);}50%{transform:translateY(-7px);}}
  .seal{
    width:46px;height:46px;flex:0 0 46px;border-radius:50%;
    display:grid;place-items:center;font-weight:800;font-size:18px;color:#fff;
    background:var(--frog);border:2px dashed rgba(255,255,255,.7);
  }
  .seal.gold{background:linear-gradient(140deg,#f4c860,#d99a2b);}
  .seal.silver{background:linear-gradient(140deg,#c9d4d8,#8fa3ab);}
  .seal.bronze{background:linear-gradient(140deg,#e0a072,#b06f3d);}
  .buoy-cover{width:62px;height:82px;object-fit:cover;border-radius:12px;flex:0 0 62px;}
  .buoy-info{flex:1;min-width:0;}
  .buoy-info h3{font-size:16px;color:var(--frog);}
  .buoy-info p{font-size:13px;color:var(--ink-soft);margin-top:2px;}
  .buoy-heat{font-size:12px;color:var(--orange);margin-top:4px;}

  /* ============ 涟漪推荐 ============ */
  .ripple-zone{
    position:relative;display:grid;
    grid-template-columns:1fr 1fr;
    gap:26px;align-items:center;
  }
  .ring{
    position:relative;border-radius:50%;
    background:var(--card);box-shadow:var(--shadow);
    padding:16px;text-align:center;
    transition:transform .4s;
  }
  .ring:hover{transform:scale(1.04);}
  .ring-main{width:100%;max-width:380px;margin:0 auto;aspect-ratio:1;display:flex;flex-direction:column;justify-content:center;}
  .ring-main img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:20px;max-height:230px;}
  .ring-main h3{font-size:18px;color:var(--frog);margin-top:12px;}
  .ring-main p{font-size:13px;color:var(--ink-soft);margin-top:4px;}
  .ring-small-wrap{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;}
  .ring-small{width:150px;aspect-ratio:1;display:flex;flex-direction:column;justify-content:center;}
  .ring-small img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:14px;max-height:120px;}
  .ring-small h3{font-size:13px;color:var(--frog);margin-top:8px;}
  .ring::after{
    content:"";position:absolute;inset:-8px;border-radius:50%;
    border:1px solid rgba(111,185,143,.5);pointer-events:none;
    animation:rippleout 4s ease-out infinite;
  }
  @keyframes rippleout{0%{transform:scale(.96);opacity:.7;}100%{transform:scale(1.12);opacity:0;}}

  /* ============ 气泡特色 ============ */
  .bubbles{display:flex;flex-wrap:wrap;justify-content:center;gap:22px;align-items:flex-start;}
  .bubble-card{
    width:250px;border-radius:50% 50% 44% 56%;
    background:rgba(255,255,255,.66);backdrop-filter:blur(6px);
    box-shadow:inset 0 0 30px rgba(255,255,255,.8),var(--shadow);
    padding:30px 24px;text-align:center;
    transition:transform .35s;
  }
  .bubble-card:nth-child(2){margin-top:30px;}
  .bubble-card:nth-child(3){margin-top:-10px;}
  .bubble-card:nth-child(4){margin-top:22px;}
  .bubble-card:hover{transform:translateY(-8px);}
  .bubble-card .ico{font-size:26px;display:block;margin-bottom:10px;}
  .bubble-card h3{font-size:16px;color:var(--frog);margin-bottom:8px;}
  .bubble-card p{font-size:13px;color:var(--ink-soft);}

  /* ============ 青蛙王座 ============ */
  .throne{
    position:relative;background:var(--card);border-radius:34px;
    box-shadow:var(--shadow);padding:34px 28px 30px;overflow:hidden;
  }
  .throne::before{
    content:"";position:absolute;top:-60px;left:50%;transform:translateX(-50%);
    width:220px;height:120px;border-radius:50%;
    background:radial-gradient(circle,rgba(111,185,143,.45),transparent 70%);
  }
  .throne-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:26px;align-items:center;position:relative;}
  .perks{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;}
  .perks span{
    font-size:13px;padding:7px 14px;border-radius:16px;
    background:rgba(111,185,143,.16);color:var(--frog);
  }
  .throne-title{font-size:22px;color:var(--frog);font-weight:800;}
  .throne-desc{font-size:14px;color:var(--ink-soft);margin-top:8px;}
  .throne-cta{text-align:center;}
  .btn-throne{
    display:inline-block;padding:14px 34px;border-radius:50% 50% 50% 8px;
    background:linear-gradient(140deg,var(--frog),var(--orange));color:#fff;
    font-weight:700;font-size:15px;box-shadow:0 10px 26px rgba(240,161,90,.4);
    transition:transform .3s;
  }
  .btn-throne:hover{transform:translateY(-3px) scale(1.03);}
  .throne-note{font-size:12px;color:var(--ink-soft);margin-top:10px;}

  /* ============ 浮萍全端 ============ */
  .duckweed{display:flex;flex-wrap:wrap;justify-content:center;gap:20px;}
  .weed{
    width:200px;border-radius:52% 48% 50% 50%/48% 52% 48% 52%;
    background:rgba(255,255,255,.6);box-shadow:var(--shadow);
    padding:26px 20px;text-align:center;transition:transform .4s;
  }
  .weed:hover{transform:rotate(-3deg) translateY(-6px);}
  .weed .ico{font-size:24px;display:block;margin-bottom:8px;}
  .weed h3{font-size:15px;color:var(--frog);}
  .weed p{font-size:12px;color:var(--ink-soft);margin-top:6px;}

  /* ============ 跃水下载 ============ */
  .splash{
    position:relative;background:var(--card);border-radius:40px;
    box-shadow:var(--shadow);padding:40px 32px;overflow:hidden;
  }
  .splash-inner{display:grid;grid-template-columns:1.3fr .8fr;gap:30px;align-items:center;}
  .splash h2{font-size:clamp(20px,3vw,28px);color:var(--frog);}
  .splash p{font-size:14px;color:var(--ink-soft);margin-top:10px;max-width:440px;}
  .splash-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px;}
  .qr-box{
    background:rgba(255,255,255,.85);border-radius:26px;padding:18px;text-align:center;
    box-shadow:inset 0 0 20px rgba(111,185,143,.2);
  }
  .qr-fake{
    width:140px;height:140px;margin:0 auto 10px;border-radius:14px;
    background:
      repeating-linear-gradient(90deg,rgba(47,109,90,.55) 0 6px,transparent 6px 12px),
      repeating-linear-gradient(0deg,rgba(47,109,90,.45) 0 6px,transparent 6px 12px);
  }
  .qr-box span{font-size:12px;color:var(--ink-soft);}

  /* ============ 阅读体验（截图墙） ============ */
  .wall{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;}
  .wall figure{border-radius:18px;overflow:hidden;box-shadow:0 10px 24px rgba(47,109,90,.16);}
  .wall img{width:100%;aspect-ratio:3/4;object-fit:cover;transition:transform .4s;}
  .wall figure:hover img{transform:scale(1.06);}

  /* ============ Footer ============ */
  footer{
    margin-top:40px;padding:56px 0 24px;color:#dfeee9;
    background:linear-gradient(180deg,rgba(47,109,90,.55),#123a30 90%);
    position:relative;overflow:hidden;
  }
  .foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;}
  .foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;}
  .foot-brand img{height:32px;border-radius:9px;}
  .foot-desc{font-size:13px;margin-top:12px;color:rgba(223,238,233,.8);max-width:280px;}
  .foot-col h4{font-size:14px;margin-bottom:12px;color:#fff;}
  .foot-col ul{list-style:none;font-size:13px;color:rgba(223,238,233,.75);display:flex;flex-direction:column;gap:8px;}
  .foot-bottom{
    margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.15);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    font-size:12px;color:rgba(223,238,233,.7);
  }
  .foot-bottom time{color:rgba(223,238,233,.6);}

  /* ============ 断点 ============ */
  @media (max-width:1024px){
    .wall{grid-template-columns:repeat(4,1fr);}
    .foot-top{grid-template-columns:1fr 1fr;}
    .ring-main{max-width:320px;}
  }
  @media (max-width:768px){
    .nav-island{
      position:fixed;left:0;right:0;top:auto;bottom:0;transform:none;
      flex-direction:row;justify-content:center;gap:8px;
      background:rgba(255,255,255,.82);backdrop-filter:blur(10px);
      padding:8px;z-index:65;border-radius:18px 18px 0 0;
    }
    .nav-island a{width:52px;height:52px;font-size:10px;}
    body{padding-bottom:72px;}
    .hero{padding-top:80px;}
    .hero-stage{flex-direction:column;align-items:center;}
    .lily-left,.lily-right{width:min(280px,80vw);height:auto;aspect-ratio:1;padding:24px;}
    .lily-center{order:0;}
    .ripple-zone{grid-template-columns:1fr;}
    .throne-inner,.splash-inner{grid-template-columns:1fr;}
    .grid-cards{grid-template-columns:repeat(2,1fr);}
    .wall{grid-template-columns:repeat(2,1fr);}
    .pad-main{width:100%;}
    .pad-side{width:47%;}
    .bubble-card{width:46%;padding:22px 14px;}
    .bubble-card:nth-child(n){margin-top:0;}
    .weed{width:46%;}
    .foot-top{grid-template-columns:1fr;}
    .dl-panel{right:2vw;width:94vw;}
  }
  @media (max-width:420px){
    .grid-cards{grid-template-columns:1fr;}
    .bubble-card,.weed{width:100%;}
    .pad-side{width:100%;}
  }