/* ========== 漫蛙2 · 荷塘主题 ========== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#F0F7F4;--bg-alt:#0D3B1F;--card:#fff;
  --ink:#1A1A1A;--ink-2:#333;--muted:#6B7B72;
  --primary:#2E7D32;--primary-dark:#1B5E20;--accent:#66BB6A;
  --water:#26C6DA;--water-dark:#00838F;
  --line:#D0E2D8;--line-soft:#E4EFE8;
  --pink:#EC407A;--gold:#FFB300;
  --font-sans:"Noto Sans SC",system-ui,sans-serif;
  --font-serif:"Noto Serif SC",serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);color:var(--ink);background:var(--bg);line-height:1.7;overflow-x:hidden;position:relative}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}

/* ===== 动态荷塘背景 ===== */
.bg-layer{position:fixed;inset:0;z-index:-1;overflow:hidden;background:linear-gradient(180deg,#F0F7F4 0%,#E8F3EE 50%,#F0F7F4 100%)}
.pond-ripple{position:absolute;border:2px solid rgba(38,198,218,.15);border-radius:50%;animation:ripple 8s ease-out infinite}
.r1{width:300px;height:300px;top:10%;left:5%;animation-delay:0s}
.r2{width:400px;height:400px;top:50%;right:5%;animation-delay:-3s}
.r3{width:250px;height:250px;bottom:5%;left:30%;animation-delay:-5s}
@keyframes ripple{0%{transform:scale(.3);opacity:.6}100%{transform:scale(2.5);opacity:0}}
.leaf{position:absolute;width:120px;height:120px;background:radial-gradient(circle at 35% 35%,#81C784,#4CAF50);border-radius:50% 0 50% 50%;opacity:.08}
.leaf-1{top:8%;right:10%;transform:rotate(25deg);animation:float1 12s ease-in-out infinite}
.leaf-2{bottom:15%;left:8%;width:90px;height:90px;transform:rotate(-15deg);animation:float2 12s ease-in-out infinite;animation-delay:-4s}
.leaf-3{top:55%;left:45%;width:70px;height:70px;transform:rotate(45deg);animation:float3 12s ease-in-out infinite;animation-delay:-8s}
@keyframes float1{0%,100%{transform:rotate(25deg) translateY(0)}50%{transform:rotate(25deg) translateY(-18px)}}
@keyframes float2{0%,100%{transform:rotate(-15deg) translateY(0)}50%{transform:rotate(-15deg) translateY(-18px)}}
@keyframes float3{0%,100%{transform:rotate(45deg) translateY(0)}50%{transform:rotate(45deg) translateY(-18px)}}
.lotus{position:absolute;width:60px;height:60px;background:radial-gradient(circle,#F8BBD0,#EC407A);border-radius:50%;opacity:.06;filter:blur(1px);animation:float-y 10s ease-in-out infinite}
.lotus-1{top:20%;left:15%}
.lotus-2{bottom:25%;right:18%;width:45px;height:45px;animation-delay:-5s}
@keyframes float-y{0%,100%{transform:translateY(0)}50%{transform:translateY(-15px)}}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(240,247,244,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line-soft)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--primary-dark)}
.brand img{width:40px;height:40px;border-radius:10px}
.site-nav{display:flex;gap:28px}
.site-nav a{font-size:.9rem;color:var(--ink-2);padding:.3rem 0;border-bottom:2px solid transparent;transition:.2s}
.site-nav a:hover{color:var(--primary);border-color:var(--accent)}
.nav-cta{background:var(--primary);color:#fff!important;padding:.5rem 1.4rem;border-radius:8px;font-size:.9rem;font-weight:600;transition:.25s}
.nav-cta:hover{background:var(--primary-dark)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;width:44px;height:44px;justify-content:center;align-items:center}
.nav-toggle span{width:24px;height:2px;background:var(--ink);transition:.3s}
.m-menu{display:none;position:fixed;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:1rem 20px 1.5rem;border-bottom:1px solid var(--line);z-index:99}
.m-menu.open{display:flex}
.m-menu a{font-size:.92rem;color:var(--ink-2);padding:.75rem 0;border-bottom:1px solid var(--line);min-height:44px;display:flex;align-items:center}
.m-menu .nav-cta{justify-content:center;margin-top:.5rem;border-bottom:none;min-height:44px}

/* ===== Hero ===== */
.hero{padding:60px 0 50px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.tag{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;color:var(--primary);background:rgba(102,187,106,.12);padding:.35rem .9rem;border-radius:20px;margin-bottom:1rem;font-weight:600;letter-spacing:.02em}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(102,187,106,.2);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(102,187,106,.4)}70%{box-shadow:0 0 0 8px rgba(102,187,106,0)}100%{box-shadow:0 0 0 0 rgba(102,187,106,0)}}
.hero h1{font-family:var(--font-serif);font-size:clamp(2rem,6.5vw,3.6rem);font-weight:900;color:var(--ink);line-height:1.15;margin-bottom:1rem}
.hero h1 .g{color:var(--primary)}
.hero h1 .sub{display:block;font-size:.32em;font-weight:500;color:var(--muted);margin-top:.4rem;letter-spacing:.05em}
.hero-desc{font-size:1rem;color:var(--muted);margin-bottom:1.8rem;max-width:520px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:1.5rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.8rem;font-weight:700;font-size:.95rem;border:none;cursor:pointer;border-radius:10px;transition:.25s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(46,125,50,.3)}
.btn-ghost{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff}
.btn-lg{padding:1rem 2.2rem;font-size:1.05rem}
.hero-pills{display:flex;flex-wrap:wrap;gap:8px}
.hero-pills span{font-size:.8rem;color:var(--primary-dark);background:#fff;border:1px solid var(--line);padding:.35rem .9rem;border-radius:20px}
.hero-stage{display:flex;justify-content:center;align-items:center}
.hero-mascot{position:relative;width:min(380px,80%);animation:mascot-float 5s ease-in-out infinite}
.hero-mascot img{width:100%;height:auto;border-radius:24px;box-shadow:0 24px 60px -16px rgba(13,59,31,.35),0 0 0 1px rgba(255,255,255,.6);animation:mascot-kenburns 12s ease-in-out infinite alternate}
.mascot-glow{position:absolute;inset:-20px;border-radius:30px;background:radial-gradient(circle,rgba(102,187,106,.35),rgba(38,198,218,.15) 50%,transparent 70%);filter:blur(20px);z-index:-1;animation:mascot-glow 4s ease-in-out infinite}
.mascot-ripple{position:absolute;inset:0;border-radius:24px;border:3px solid rgba(102,187,106,.4);animation:mascot-ripple 3s ease-out infinite}
@keyframes mascot-float{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-18px) rotate(1deg)}}
@keyframes mascot-kenburns{0%{transform:scale(1)}100%{transform:scale(1.06)}}
@keyframes mascot-glow{0%,100%{opacity:.6;transform:scale(1)}50%{opacity:1;transform:scale(1.08)}}
@keyframes mascot-ripple{0%{transform:scale(.95);opacity:.8}100%{transform:scale(1.25);opacity:0}}

/* ===== Sections ===== */
.sec{padding:70px 0;position:relative}
.sec-alt{background:var(--bg-alt);color:#fff}
.sec-head{max-width:640px;margin:0 auto 40px;text-align:center}
.sec-head.light .tag{background:rgba(255,255,255,.12);color:#A5D6A7}
.sec-head h2{font-family:var(--font-serif);font-size:clamp(1.7rem,4vw,2.3rem);font-weight:900;margin-bottom:.6rem}
.sec-sub{color:var(--muted);font-size:.92rem}
.sec-alt .sec-sub{color:rgba(255,255,255,.7)}

/* ===== Screenshots ===== */
.shots{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.shot-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px;text-align:center;transition:.3s}
.shot-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(13,59,31,.12)}
.shot-card img{border-radius:8px;margin:0 auto;max-height:420px;object-fit:cover}
.shot-card figcaption{margin-top:.8rem;font-size:.85rem;font-weight:600;color:var(--ink-2)}
.shot-num{color:var(--primary);font-family:var(--font-serif);font-weight:900;margin-right:.3rem}

/* ===== Features ===== */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:1.6rem;transition:.3s}
.feat-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.feat-num{font-family:var(--font-serif);font-size:2rem;font-weight:900;color:var(--accent);margin-bottom:.6rem}
.feat-card h3{font-size:1.1rem;margin-bottom:.5rem}
.feat-card p{font-size:.88rem;color:rgba(255,255,255,.65)}

/* ===== Steps ===== */
.steps{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
.step{flex:1;min-width:180px;max-width:220px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1.5rem 1rem;text-align:center;transition:.3s}
.step:hover{border-color:var(--accent);box-shadow:0 8px 20px rgba(46,125,50,.1)}
.step-num{font-family:var(--font-serif);font-size:1.8rem;font-weight:900;color:var(--primary);margin-bottom:.5rem}
.step h3{font-size:1rem;margin-bottom:.3rem}
.step p{font-size:.82rem;color:var(--muted)}
.step-arrow{color:var(--accent);font-size:1.4rem;font-weight:700}

/* ===== Spec ===== */
.spec-wrap{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
.spec-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1.4rem;text-align:center}
.stat-num{font-family:var(--font-serif);font-size:1.8rem;font-weight:900;color:var(--primary)}
.stat-label{font-size:.82rem;color:var(--muted);margin-top:.3rem}
.spec-table{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.spec-row{display:flex;justify-content:space-between;padding:.85rem 1.2rem;border-bottom:1px solid var(--line-soft);font-size:.9rem}
.spec-row:last-child{border-bottom:none}
.spec-k{color:var(--muted)}
.spec-v{font-weight:600;color:var(--ink-2)}

/* ===== Dock / CTA ===== */
.dock{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--bg-alt) 100%);color:#fff;padding:60px 0;position:relative;overflow:hidden}
.dock::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 50%,rgba(38,198,218,.15),transparent 50%),radial-gradient(circle at 80% 50%,rgba(102,187,106,.15),transparent 50%)}
.dock-inner{position:relative;text-align:center;max-width:640px;margin:0 auto}
.dock h2{font-family:var(--font-serif);font-size:clamp(1.8rem,4.5vw,2.5rem);font-weight:900;margin-bottom:.8rem}
.dock p{color:rgba(255,255,255,.8);margin-bottom:1.8rem}
.dock-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.dock .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5)}
.dock .btn-ghost:hover{background:#fff;color:var(--primary-dark);border-color:#fff}

/* ===== FAQ ===== */
.faq{max-width:760px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:1.2rem 1.4rem;cursor:pointer;font-weight:700;font-size:1rem;transition:.2s;min-height:44px}
.faq-q:hover{color:var(--primary)}
.faq-q .arrow{width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:400;flex-shrink:0;transition:.3s}
.faq-item.open .arrow{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-item.open .faq-a{max-height:400px}
.faq-a p{padding:0 1.4rem 1.2rem;color:var(--muted);font-size:.92rem}

/* ===== Reviews ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.review-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:1.5rem;transition:.3s}
.review-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.review-avatar{width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;margin-bottom:1rem}
.review-body p{font-size:.9rem;color:rgba(255,255,255,.8);margin-bottom:1rem;line-height:1.7}
.review-meta{font-size:.8rem;color:rgba(255,255,255,.5)}

/* ===== Footer ===== */
.site-footer{background:#0A2A17;color:#fff;padding:40px 0 30px}
.footer-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;padding-bottom:1.5rem;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand img{border-radius:10px}
.footer-name{font-weight:700;font-size:1.1rem}
.footer-url{font-size:.78rem;color:rgba(255,255,255,.5)}
.footer-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-links a{font-size:.82rem;color:rgba(255,255,255,.55);transition:.2s;padding:.4rem 0;min-height:32px;display:inline-flex;align-items:center}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{padding-top:1.2rem;text-align:center}
.footer-copy{font-size:.82rem;color:rgba(255,255,255,.6)}
.footer-tip{font-size:.75rem;color:rgba(255,255,255,.35);margin-top:.4rem}

/* ===== Back to top ===== */
.back-top{position:fixed;bottom:24px;right:24px;width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:90;box-shadow:0 4px 16px rgba(46,125,50,.35);transition:.25s}
.back-top:hover{background:var(--primary-dark);transform:translateY(-2px)}

/* ===== Reveal animation ===== */
.rev{opacity:1;transform:none;transition:opacity .6s,transform .6s}
.js .rev{opacity:0;transform:translateY(24px)}
.rev.is-in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media(max-width:980px){
  .site-nav{display:none}
  .nav-toggle{display:flex}
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-stage{order:-1}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero-btns,.hero-pills{justify-content:center}
  .shots{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr}
  .spec-wrap{grid-template-columns:1fr}
  .steps{flex-direction:column}
  .step-arrow{transform:rotate(90deg)}
}
@media(max-width:560px){
  .hero{padding:36px 0 30px}
  .sec{padding:48px 0}
  .hero-mascot{width:min(300px,85%)}
  .feat-grid{grid-template-columns:1fr}
  .shots{grid-template-columns:1fr 1fr;gap:12px}
  .dock{padding:44px 0}
  .hero-pills span{font-size:.74rem}
  .footer-top{flex-direction:column;text-align:center}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .js .rev{opacity:1!important;transform:none!important}
  html{scroll-behavior:auto}
}