:root{
    --water-top:#e8f7ee;
    --water-mid:#d3ecf2;
    --water-bottom:#bfe3f0;
    --pad-green:#5fa860;
    --frog-deep:#2f5c46;
    --frog-teal:#3f8a72;
    --sun-orange:#f1a24c;
    --sun-soft:#ffc98a;
    --ink:#233a33;
    --ink-soft:#4b6259;
    --mist:rgba(255,255,255,.55);
    --shadow:0 18px 40px rgba(47,92,70,.14);
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    color:var(--ink);
    background:
      radial-gradient(1200px 600px at 15% 0%, #f2fbf5 0%, transparent 60%),
      radial-gradient(900px 500px at 85% 10%, #e6f7fb 0%, transparent 55%),
      linear-gradient(180deg,var(--water-top) 0%,var(--water-mid) 45%,var(--water-bottom) 100%);
    background-attachment:fixed;
    line-height:1.75;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;}
  .wrap{width:min(1160px,92vw);margin:0 auto;}

  /* ============ 顶部水面条 ============ */
  .top-mist{
    position:sticky;top:0;z-index:60;
    padding:10px 0;
    background:linear-gradient(180deg,rgba(255,255,255,.72),rgba(255,255,255,.28));
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(255,255,255,.6);
    transition:opacity .4s ease, box-shadow .4s ease;
  }
  .top-mist.scrolled{box-shadow:0 6px 24px rgba(95,168,96,.16);opacity:.94;}
  .top-row{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .brand-line{display:flex;align-items:center;gap:10px;}
  .brand-line img{height:34px;width:auto;}
  .brand-name{font-size:1.05rem;font-weight:700;letter-spacing:.06em;color:var(--frog-deep);}
  .top-dl{
    width:42px;height:42px;border-radius:50%;border:none;cursor:pointer;
    background:linear-gradient(145deg,var(--frog-teal),var(--pad-green));
    color:#fff;font-size:1.1rem;display:grid;place-items:center;
    box-shadow:0 6px 16px rgba(63,138,114,.35);
    transition:transform .25s ease;
  }
  .top-dl:hover{transform:scale(1.08);}
  .dl-panel{
    max-height:0;overflow:hidden;
    transition:max-height .5s cubic-bezier(.22,1,.36,1), margin .4s ease;
    margin-top:0;
  }
  .dl-panel.open{max-height:420px;margin-top:12px;}
  .dl-inner{
    background:rgba(255,255,255,.82);
    border:1px solid rgba(255,255,255,.9);
    border-radius:22px;
    padding:18px 20px;
    box-shadow:var(--shadow);
    display:grid;gap:14px;
  }
  .dl-stores{display:flex;gap:12px;flex-wrap:wrap;}
  .btn-water{
    display:inline-flex;align-items:center;gap:8px;
    padding:11px 24px;border-radius:40px;font-weight:600;font-size:.94rem;
    color:#fff;border:none;cursor:pointer;
    background:linear-gradient(140deg,var(--frog-teal),var(--pad-green));
    box-shadow:0 8px 20px rgba(63,138,114,.3);
    transition:transform .25s ease, box-shadow .25s ease;
  }
  .btn-water:hover{transform:translateY(-3px);box-shadow:0 12px 24px rgba(63,138,114,.4);}
  .btn-sun{
    background:linear-gradient(140deg,var(--sun-orange),#e08c3a);
    box-shadow:0 8px 20px rgba(241,162,76,.35);
  }
  .dl-note{font-size:.8rem;color:var(--ink-soft);}
  .dl-note strong{color:var(--frog-deep);}

  /* ============ 左侧导航岛 ============ */
  .nav-island{
    position:fixed;left:16px;top:50%;transform:translateY(-50%);
    z-index:55;display:flex;flex-direction:column;gap:12px;
  }
  .nav-leaf{
    width:52px;height:52px;border-radius:50% 50% 50% 12px;
    background:rgba(255,255,255,.66);
    border:1px solid rgba(95,168,96,.3);
    display:grid;place-items:center;font-size:.7rem;font-weight:600;color:var(--frog-deep);
    box-shadow:0 6px 16px rgba(95,168,96,.16);
    transition:transform .35s ease, background .3s ease;
    text-align:center;line-height:1.2;
  }
  .nav-leaf:hover{transform:rotate(-5deg) scale(1.1);background:rgba(255,255,255,.92);}

  /* ============ Hero ============ */
  .hero{position:relative;padding:52px 0 90px;overflow:hidden;}
  .hero-head{text-align:center;max-width:760px;margin:0 auto 10px;position:relative;z-index:2;}
  .hero-head h1{
    font-size:clamp(1.75rem,4.2vw,3rem);
    line-height:1.35;letter-spacing:.02em;color:var(--frog-deep);
    font-weight:800;
  }
  .hero-head h1 em{font-style:normal;color:var(--pad-green);position:relative;}
  .hero-sub{margin-top:16px;font-size:1rem;color:var(--ink-soft);}
  .hero-tip{margin-top:8px;font-size:.82rem;color:#7d968b;}

  .hero-pond{
    position:relative;margin-top:34px;
    display:grid;grid-template-columns:1fr 1.25fr 1fr;
    align-items:end;gap:18px;
  }
  .lily{
    position:relative;border-radius:50% 50% 46% 46%;
    background:linear-gradient(160deg,rgba(255,255,255,.88),rgba(210,240,225,.7));
    border:1px solid rgba(255,255,255,.85);
    box-shadow:var(--shadow);
    padding:22px 18px;display:flex;flex-direction:column;justify-content:center;gap:10px;
  }
  .lily::after{
    content:"";position:absolute;left:50%;bottom:-14px;transform:translateX(-50%);
    width:120%;height:26px;border-radius:50%;
    background:radial-gradient(ellipse at center,rgba(63,138,114,.16),transparent 70%);
  }
  .lily.side{min-height:230px;}
  .lily.center{
    grid-row:1;border-radius:50% 50% 50% 50% / 30% 30% 70% 70%;
    padding:16px;background:linear-gradient(160deg,rgba(255,255,255,.92),rgba(224,245,232,.75));
  }
  .phone-mock{
    position:relative;border-radius:30px;overflow:hidden;
    border:6px solid #fff;box-shadow:0 18px 36px rgba(47,92,70,.2);
    background:#fff;max-width:250px;margin:0 auto;
  }
  .phone-mock img{width:100%;height:auto;}
  .stat-tag{font-size:.78rem;color:var(--ink-soft);}
  .stat-num{font-size:1.4rem;font-weight:800;color:var(--frog-deep);}
  .lily h3{font-size:.92rem;color:var(--frog-deep);font-weight:700;}
  .lily p{font-size:.8rem;color:var(--ink-soft);}
  .hero-bubble{
    position:absolute;border-radius:50%;
    background:radial-gradient(circle at 30% 30%,rgba(255,255,255,.95),rgba(255,255,255,.3));
    box-shadow:0 4px 12px rgba(47,92,70,.1);
  }
  .b1{width:46px;height:46px;left:4%;top:6%;}
  .b2{width:22px;height:22px;right:10%;top:2%;}
  .b3{width:14px;height:14px;right:22%;bottom:14%;}
  .b4{width:30px;height:30px;left:16%;bottom:8%;}
  .hero-wave{
    position:absolute;left:0;right:0;bottom:-2px;height:60px;
    background:linear-gradient(180deg,transparent,var(--water-mid));
    pointer-events:none;
  }

  /* ============ 通用区块标题 ============ */
  section{position:relative;padding:64px 0;}
  .sec-head{text-align:center;max-width:680px;margin:0 auto 38px;}
  .sec-head h2{
    font-size:clamp(1.35rem,2.6vw,1.9rem);color:var(--frog-deep);font-weight:800;letter-spacing:.02em;
  }
  .sec-head p{margin-top:10px;color:var(--ink-soft);font-size:.94rem;}

  /* ============ 荷叶群分类 ============ */
  .lily-cluster{
    display:grid;grid-template-columns:repeat(4,1fr);gap:22px;align-items:start;
  }
  .cat-leaf{
    position:relative;border-radius:50%;
    aspect-ratio:1/1;
    background:linear-gradient(160deg,rgba(255,255,255,.92),rgba(214,241,226,.8));
    border:1px solid rgba(255,255,255,.9);
    box-shadow:var(--shadow);
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
    cursor:pointer;transition:transform .4s ease, box-shadow .4s ease;
    text-align:center;padding:10px;
  }
  .cat-leaf:nth-child(2){margin-top:26px;}
  .cat-leaf:nth-child(3){margin-top:-14px;}
  .cat-leaf:nth-child(4){margin-top:18px;}
  .cat-leaf:hover{transform:scale(1.07);box-shadow:0 24px 44px rgba(47,92,70,.2);}
  .cat-leaf span{font-size:1rem;font-weight:700;color:var(--frog-deep);}
  .cat-leaf small{font-size:.74rem;color:#7d968b;}
  .heat-bar{width:60%;height:5px;border-radius:4px;background:rgba(63,138,114,.18);overflow:hidden;}
  .heat-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--pad-green),var(--sun-orange));border-radius:4px;}
  .cat-expand{
    display:none;margin-top:34px;
    background:rgba(255,255,255,.75);border-radius:24px;padding:18px;
    box-shadow:var(--shadow);
  }
  .cat-expand.show{display:block;}
  .cat-expand h3{font-size:1rem;color:var(--frog-deep);margin-bottom:12px;}
  .grid-posters{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
  .poster-card{
    border-radius:16px;overflow:hidden;background:#fff;
    box-shadow:0 8px 18px rgba(47,92,70,.12);
    transition:transform .3s ease;
  }
  .poster-card:hover{transform:translateY(-5px);}
  .poster-card img{width:100%;aspect-ratio:3/4;object-fit:cover;}
  .poster-card p{font-size:.76rem;padding:7px 8px;color:var(--ink-soft);}

  /* ============ 浮标排行榜 ============ */
  .buoy-list{display:grid;gap:20px;}
  .buoy{
    display:grid;grid-template-columns:56px 1fr auto;gap:16px;align-items:center;
    background:rgba(255,255,255,.72);border-radius:24px;padding:14px 18px;
    box-shadow:var(--shadow);position:relative;
    animation:floaty 6s 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;}
  @keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-8px);}}
  .buoy-seal{
    width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
    font-weight:800;font-size:1.05rem;color:#fff;
    background:linear-gradient(140deg,var(--frog-teal),var(--pad-green));
    box-shadow:0 6px 14px rgba(63,138,114,.3);
  }
  .buoy.gold .buoy-seal{background:linear-gradient(140deg,#f6cf6b,#dba03a);}
  .buoy.silver .buoy-seal{background:linear-gradient(140deg,#cfd8dc,#93a4ac);}
  .buoy.bronze .buoy-seal{background:linear-gradient(140deg,#e9b184,#c47a45);}
  .buoy-cover{width:56px;height:74px;border-radius:10px;object-fit:cover;}
  .buoy-info h4{font-size:.96rem;color:var(--frog-deep);}
  .buoy-info p{font-size:.76rem;color:var(--ink-soft);}
  .buoy-wave{margin-top:6px;height:4px;width:80px;border-radius:4px;background:rgba(63,138,114,.15);overflow:hidden;}
  .buoy-wave i{display:block;height:100%;background:var(--frog-teal);}

  /* ============ 涟漪推荐 ============ */
  .ripple-stage{
    position:relative;display:grid;grid-template-columns:repeat(3,1fr);
    gap:26px;align-items:center;justify-items:center;
  }
  .ripple-main{
    grid-column:1/-1;width:min(340px,80vw);border-radius:50%;padding:16px;
    background:radial-gradient(circle,rgba(255,255,255,.9),rgba(214,241,226,.5));
    box-shadow:0 0 0 12px rgba(255,255,255,.28),0 0 0 26px rgba(255,255,255,.16),var(--shadow);
    text-align:center;transition:transform .4s ease;
  }
  .ripple-main:hover{transform:scale(1.03);}
  .ripple-main img{border-radius:50%;width:100%;aspect-ratio:3/4;object-fit:cover;margin-bottom:8px;}
  .ripple-main p{font-size:.86rem;color:var(--ink-soft);}
  .ripple-side{
    width:min(200px,70vw);border-radius:50%;padding:10px;text-align:center;
    background:radial-gradient(circle,rgba(255,255,255,.86),rgba(214,241,226,.45));
    box-shadow:0 0 0 8px rgba(255,255,255,.22),var(--shadow);
    transition:transform .4s ease;
  }
  .ripple-side:hover{transform:scale(1.05);}
  .ripple-side img{border-radius:50%;width:100%;aspect-ratio:3/4;object-fit:cover;margin-bottom:6px;}
  .ripple-side p{font-size:.78rem;color:var(--ink-soft);}

  /* ============ 漂浮气泡特色 ============ */
  .bubble-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
  .bubble-card{
    position:relative;border-radius:28px;padding:24px;
    background:radial-gradient(circle at 20% 20%,rgba(255,255,255,.92),rgba(214,241,226,.65));
    border:1px solid rgba(255,255,255,.9);
    box-shadow:var(--shadow);
    transition:transform .4s ease;
  }
  .bubble-card:nth-child(even){margin-top:26px;}
  .bubble-card:hover{transform:translateY(-8px);}
  .bubble-card h3{font-size:1rem;color:var(--frog-deep);margin-bottom:6px;}
  .bubble-card p{font-size:.85rem;color:var(--ink-soft);}
  .bubble-icon{
    width:44px;height:44px;border-radius:50%;margin-bottom:12px;
    background:linear-gradient(140deg,var(--pad-green),var(--sun-orange));
    opacity:.85;
  }

  /* ============ 会员王座 ============ */
  .throne{
    max-width:820px;margin:0 auto;border-radius:28px;padding:30px;
    background:linear-gradient(160deg,rgba(255,255,255,.92),rgba(214,241,226,.7));
    box-shadow:var(--shadow);position:relative;
  }
  .throne::before{
    content:"";position:absolute;top:-22px;left:50%;transform:translateX(-50%);
    width:150px;height:44px;border-radius:50%;
    background:radial-gradient(ellipse,rgba(95,168,96,.35),transparent 70%);
  }
  .throne-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:center;}
  .throne h2{font-size:1.3rem;color:var(--frog-deep);margin-bottom:8px;}
  .throne ul{list-style:none;display:grid;gap:8px;}
  .throne li{font-size:.86rem;color:var(--ink-soft);padding-left:18px;position:relative;}
  .throne li::before{content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;border-radius:50%;background:var(--pad-green);}
  .throne-cta{text-align:center;}
  .drop-btn{
    display:inline-block;padding:14px 34px;border-radius:46px 46px 46px 12px;
    background:linear-gradient(140deg,var(--frog-teal),var(--sun-orange));
    color:#fff;font-weight:700;box-shadow:0 10px 22px rgba(63,138,114,.32);
    transition:transform .3s ease;
  }
  .drop-btn:hover{transform:translateY(-4px);}
  .price-tip{font-size:.78rem;color:#7d968b;margin-top:10px;}

  /* ============ 全端浮萍 ============ */
  .duckweed-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
  .duckweed{
    border-radius:46% 54% 50% 50%/52% 48% 52% 48%;
    padding:22px 18px;text-align:center;
    background:rgba(255,255,255,.78);box-shadow:var(--shadow);
    transition:transform .4s ease;
  }
  .duckweed:hover{transform:rotate(3deg) translateY(-6px);}
  .duckweed h3{font-size:.95rem;color:var(--frog-deep);margin-bottom:6px;}
  .duckweed p{font-size:.78rem;color:var(--ink-soft);}
  .duckweed-icon{width:38px;height:38px;border-radius:50%;margin:0 auto 10px;background:linear-gradient(140deg,var(--pad-green),#8ecf9a);}

  /* ============ 跃水下载 ============ */
  .splash{
    max-width:880px;margin:0 auto;border-radius:28px;padding:34px;
    background:linear-gradient(160deg,rgba(255,255,255,.92),rgba(214,241,226,.72));
    box-shadow:var(--shadow);
    display:grid;grid-template-columns:1.3fr .7fr;gap:28px;align-items:center;
  }
  .splash h2{font-size:1.35rem;color:var(--frog-deep);margin-bottom:10px;}
  .splash p{font-size:.9rem;color:var(--ink-soft);margin-bottom:18px;}
  .splash-btns{display:flex;gap:12px;flex-wrap:wrap;}
  .qr-box{
    border-radius:22px;background:rgba(255,255,255,.85);padding:18px;text-align:center;
    box-shadow:inset 0 0 0 1px rgba(95,168,96,.2);
  }
  .qr-box img{width:100%;border-radius:14px;aspect-ratio:1/1;object-fit:cover;}
  .qr-box span{display:block;font-size:.76rem;color:#7d968b;margin-top:8px;}

  /* ============ Footer ============ */
  footer{
    background:linear-gradient(180deg,#a9cfd8,#6a9a9e);
    color:#eef7f2;padding:54px 0 26px;position:relative;overflow:hidden;
  }
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px;}
  .foot-brand img{height:32px;margin-bottom:10px;}
  .foot-brand p{font-size:.82rem;color:rgba(255,255,255,.8);}
  .foot-col h4{font-size:.86rem;margin-bottom:10px;color:#fff;}
  .foot-col a{display:block;font-size:.8rem;color:rgba(255,255,255,.75);padding:3px 0;}
  .foot-bottom{border-top:1px solid rgba(255,255,255,.2);margin-top:34px;padding-top:16px;font-size:.72rem;color:rgba(255,255,255,.7);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .nav-island{left:8px;gap:8px;}
    .nav-leaf{width:44px;height:44px;font-size:.64rem;}
    .hero-pond{grid-template-columns:1fr 1.2fr 1fr;gap:12px;}
    .lily.side{min-height:200px;padding:16px 12px;}
    .lily-cluster{grid-template-columns:repeat(2,1fr);}
    .grid-posters{grid-template-columns:repeat(3,1fr);}
    .duckweed-grid{grid-template-columns:repeat(2,1fr);}
    .splash{grid-template-columns:1fr;text-align:center;}
    .splash-btns{justify-content:center;}
  }
  @media (max-width:767px){
    .nav-island{
      position:fixed;left:0;right:0;bottom:0;top:auto;transform:none;
      flex-direction:row;justify-content:space-around;
      background:rgba(255,255,255,.8);backdrop-filter:blur(10px);
      padding:8px 6px;border-top:1px solid rgba(255,255,255,.9);
      gap:4px;
    }
    .nav-leaf{width:44px;height:44px;border-radius:50%;font-size:.62rem;}
    body{padding-bottom:64px;}
    .hero{padding:36px 0 60px;}
    .hero-pond{grid-template-columns:1fr;gap:16px;}
    .lily.center{order:-1;}
    .phone-mock{max-width:200px;}
    .sec-head{margin-bottom:26px;}
    section{padding:44px 0;}
    .lily-cluster{grid-template-columns:repeat(2,1fr);gap:14px;}
    .cat-leaf:nth-child(2),.cat-leaf:nth-child(3),.cat-leaf:nth-child(4){margin-top:0;}
    .grid-posters{grid-template-columns:repeat(2,1fr);}
    .buoy{grid-template-columns:44px 1fr;gap:10px;padding:12px;}
    .buoy-cover{display:none;}
    .ripple-stage{grid-template-columns:1fr;}
    .bubble-grid{grid-template-columns:1fr;}
    .bubble-card:nth-child(even){margin-top:0;}
    .throne-inner{grid-template-columns:1fr;}
    .duckweed-grid{grid-template-columns:1fr 1fr;gap:12px;}
    .splash{padding:22px 16px;}
    .foot-grid{grid-template-columns:1fr 1fr;gap:20px;}
    .foot-bottom{flex-direction:column;font-size:.68rem;}
    .top-mist{padding:6px 0;}
  }