:root{
  --green-600:#2e9e57;--green-500:#4cbb6e;--green-400:#6fd08e;--green-300:#a3e3b8;--green-100:#e3f4e7;--green-50:#f2faf4;
  --orange-600:#f26b1d;--orange-500:#ff9233;--orange-400:#ffad5c;--orange-300:#ffc98a;--orange-100:#fff0df;--yellow-400:#ffd24a;
  --ink-900:#102a1e;--ink-600:#3c5a4b;--ink-400:#6d887b;
  --grad-main:linear-gradient(135deg,#45b763 0%,#4cbb6e 45%,#66c37f 100%);
  --grad-orange:linear-gradient(135deg,#ffb03a 0%,#ff9233 50%,#f26b1d 100%);
  --grad-hero:linear-gradient(160deg,#f4fbf6 0%,#eef8f1 40%,#fff6ea 100%);
  --shadow-sm:0 2px 10px rgba(16,42,30,.06);--shadow-md:0 8px 30px rgba(16,42,30,.10);--shadow-lg:0 20px 60px rgba(16,42,30,.14);--shadow-orange:0 10px 30px rgba(255,146,51,.35);
  --radius:18px;--radius-lg:26px;--max-w:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink-900);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img,svg{display:block;max-width:100%}
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

/* ---- nav ---- */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:.3s}
.nav.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(14px);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{font-size:21px;font-weight:900;letter-spacing:-.5px;display:flex;align-items:center;gap:9px}
.logo .flask{font-size:24px}
.logo .em{background:var(--grad-main);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:30px;font-size:14.5px;font-weight:500;color:var(--ink-600)}
.nav-links a:hover{color:var(--green-600)}
.nav-burger{display:none;background:none;border:0;font-size:24px;cursor:pointer;color:var(--ink-900)}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:14px 30px;font-size:15px;font-weight:700;cursor:pointer;border:0;transition:.25s}
.btn-primary{background:var(--grad-main);color:#fff;box-shadow:0 8px 24px rgba(76,187,110,.38)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(76,187,110,.45)}
.btn-outline{border:2px solid var(--green-500);color:var(--green-600);background:#fff}
.btn-outline:hover{background:var(--green-50);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--orange-600);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.btn-white:hover{transform:translateY(-2px)}
.btn-sm{padding:10px 22px;font-size:14px}

/* ---- hero ---- */
.hero{position:relative;padding:176px 0 104px;background:var(--grad-hero);overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55}
.blob-1{width:480px;height:480px;background:#a3e3b8;top:-140px;right:-100px;animation:float 9s ease-in-out infinite}
.blob-2{width:400px;height:400px;background:#ffc98a;bottom:-140px;left:-120px;animation:float 11s ease-in-out infinite reverse}
.blob-3{width:220px;height:220px;background:#ffd24a;top:40%;left:55%;opacity:.35;animation:float 8s ease-in-out infinite}
.mol{position:absolute;opacity:.35;color:#7d9a8b}
.mol-1{top:120px;left:6%}.mol-2{bottom:90px;right:8%}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-24px)}}
.hero-inner{position:relative;z-index:2;text-align:center}
.badge{display:inline-flex;align-items:center;gap:8px;background:var(--green-100);color:var(--green-600);border-radius:999px;padding:8px 18px;font-size:13.5px;font-weight:600;margin-bottom:26px}
.hero-title{font-size:clamp(34px,5.4vw,62px);font-weight:900;letter-spacing:-1.5px;line-height:1.18;margin-bottom:22px}
.grad-text{background:var(--grad-main);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-desc{font-size:18px;color:var(--ink-600);max-width:760px;margin:0 auto 38px}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:64px}
.hero-stats{display:flex;justify-content:center;gap:56px;flex-wrap:wrap}
.stat b{display:block;font-size:30px;color:var(--green-600);font-weight:900;letter-spacing:-.5px}
.stat span{font-size:13px;color:var(--ink-400)}

/* ---- sections ---- */
section{padding:92px 0}
.alt-bg{background:linear-gradient(180deg,#fff 0%,var(--green-50) 100%)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 52px}
.sec-head h2{font-size:clamp(26px,3.6vw,40px);font-weight:900;letter-spacing:-1px;margin-bottom:14px}
.sec-head p{color:var(--ink-600);font-size:16px}
.tag{display:inline-block;background:var(--orange-100);color:var(--orange-600);border-radius:999px;padding:6px 16px;font-size:12.5px;font-weight:700;margin-bottom:16px}

/* steps */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:#fff;border:1px solid rgba(16,42,30,.08);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);transition:.3s;position:relative}
.step:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.step-num{position:absolute;top:-18px;left:26px;width:40px;height:40px;border-radius:50%;background:var(--grad-main);color:#fff;font-weight:900;display:grid;place-items:center;box-shadow:0 6px 16px rgba(76,187,110,.4)}
.step.hot .step-num{background:var(--grad-orange);box-shadow:var(--shadow-orange)}
.step h3{font-size:18px;margin:14px 0 10px}
.step p{font-size:14px;color:var(--ink-600)}
.step .pill{display:inline-block;margin-top:14px;font-size:12px;font-weight:700;color:var(--green-600);background:var(--green-100);border-radius:999px;padding:4px 12px}
.step.hot .pill{color:var(--orange-600);background:var(--orange-100)}

/* capabilities */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cap{background:#fff;border:1px solid rgba(16,42,30,.08);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-sm);transition:.3s}
.cap:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.cap .ico{width:46px;height:46px;border-radius:14px;background:var(--green-100);display:grid;place-items:center;font-size:22px;margin-bottom:14px}
.cap:nth-child(even) .ico{background:var(--orange-100)}
.cap h3{font-size:16px;margin-bottom:8px}
.cap p{font-size:13px;color:var(--ink-600)}
.cap .pill{display:inline-block;margin-top:14px;font-size:12px;font-weight:700;color:var(--green-600);background:var(--green-100);border-radius:999px;padding:4px 12px}

/* TRL timeline */
.tl{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;position:relative;margin-top:20px}
.tl::before{content:"";position:absolute;top:9px;left:5%;right:5%;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--green-300),var(--green-500),var(--orange-400),var(--orange-500))}
.tl-item{text-align:center;position:relative;z-index:2}
.tl-dot{width:22px;height:22px;border-radius:50%;background:#fff;border:6px solid var(--green-500);margin:0 auto 14px;box-shadow:0 3px 10px rgba(16,42,30,.15)}
.tl-item.hot .tl-dot{border-color:var(--orange-500);width:26px;height:26px;margin-top:-2px}
.tl-item b{display:block;font-size:15px}
.tl-item small{font-size:12px;color:var(--ink-400)}
.tl-item.hot b{color:var(--orange-600)}
.tl-note{text-align:center;margin-top:30px;font-size:14px;color:var(--ink-600)}
.tl-note strong{color:var(--orange-600)}

/* audience */
.aud{background:#fff;border:1px solid rgba(16,42,30,.08);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);transition:.3s}
.aud:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.aud .ico{font-size:34px;margin-bottom:14px}
.aud h3{font-size:18px;margin-bottom:10px}
.aud p{font-size:14px;color:var(--ink-600)}
.aud .pill{display:inline-block;margin-top:16px;font-size:12.5px;font-weight:700;color:var(--green-600);background:var(--green-100);border-radius:999px;padding:5px 14px}

/* compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px;max-width:920px;margin:0 auto}
.cmp{border-radius:var(--radius-lg);padding:34px 32px}
.cmp-old{background:#f4f6f5;color:var(--ink-400)}
.cmp-new{background:linear-gradient(160deg,var(--green-50),#fff);border:2px solid var(--green-300);box-shadow:var(--shadow-md)}
.cmp h3{font-size:20px;margin-bottom:20px}
.cmp-new h3{color:var(--green-600)}
.cmp ul{list-style:none}
.cmp li{display:flex;gap:10px;font-size:14.5px;margin-bottom:14px}
.cmp-old li::before{content:"✕";font-weight:900;flex-shrink:0}
.cmp-new li::before{content:"✓";font-weight:900;color:var(--green-600);flex-shrink:0}
.cmp-new{color:var(--ink-900)}

/* download */
.dl-card{max-width:520px;margin:0 auto;background:#fff;border:2px solid var(--green-300);border-radius:var(--radius-lg);padding:40px 34px;text-align:center;box-shadow:var(--shadow-md)}
.dl-card .ico{font-size:44px;margin-bottom:10px}
.dl-ver{display:inline-block;font-size:12px;font-weight:700;color:var(--green-600);background:var(--green-100);border-radius:999px;padding:4px 14px;margin-bottom:12px}
.dl-name{font-size:22px;font-weight:900;margin-bottom:6px}
.dl-meta{font-size:13px;color:var(--ink-400);margin-bottom:22px}
.dl-btns{display:flex;gap:14px;justify-content:center;align-items:center;flex-wrap:wrap}
.dl-soon{font-size:13px;color:var(--ink-400)}
.dl-note{margin-top:20px;font-size:12.5px;color:var(--ink-400)}
.dl-note a{color:var(--green-600);font-weight:600}

/* cta band */
.cta-band{background:var(--grad-orange);border-radius:var(--radius-lg);padding:64px 40px;text-align:center;color:#fff;box-shadow:var(--shadow-orange)}
.cta-band h2{font-size:clamp(24px,3.4vw,38px);font-weight:900;letter-spacing:-1px;margin-bottom:14px}
.cta-band p{opacity:.94;margin-bottom:30px;font-size:16px}

/* faq */
.faq{max-width:760px;margin:0 auto}
.qa{background:#fff;border:1px solid rgba(16,42,30,.1);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:.3s}
.qa.open{border-color:var(--green-400);box-shadow:var(--shadow-sm)}
.qa .q{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;font-weight:600;font-size:15px;cursor:pointer;list-style:none}
.qa .arr{color:var(--green-600);font-size:20px;font-weight:900;transition:.3s;flex-shrink:0}
.qa.open .arr{transform:rotate(45deg)}
.qa .a{max-height:0;overflow:hidden;transition:.35s;padding:0 22px;font-size:14px;color:var(--ink-600)}
.qa.open .a{max-height:220px;padding-bottom:20px}

/* footer */
footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:56px 0 34px}
.foot-grid{display:flex;justify-content:space-between;gap:36px;flex-wrap:wrap;margin-bottom:34px}
.foot-logo{font-size:20px;font-weight:900;color:#fff;margin-bottom:10px}
.foot-logo .em{color:var(--green-400)}
.foot-slogan{font-size:13.5px;max-width:300px}
.foot-col b{display:block;color:#fff;font-size:14px;margin-bottom:12px}
.foot-col a{display:block;font-size:13.5px;margin-bottom:8px}
.foot-col a:hover{color:var(--green-400)}
.copy{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;text-align:center;font-size:12.5px;color:rgba(255,255,255,.45)}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:.7s ease}
.reveal.in{opacity:1;transform:none}

/* responsive */
@media(max-width:960px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr;max-width:480px;margin:0 auto}
  .tl{grid-template-columns:repeat(3,1fr);row-gap:28px}
  .tl::before{display:none}
  .compare{grid-template-columns:1fr;max-width:520px}
}
@media(max-width:860px){
  .nav-links{position:fixed;top:74px;right:0;left:0;background:rgba(255,255,255,.98);flex-direction:column;padding:22px;gap:18px;box-shadow:var(--shadow-md);display:none}
  .nav-links.open{display:flex}
  .nav-burger{display:block}
}
@media(max-width:560px){
  .grid-4{grid-template-columns:1fr}
  .hero{padding:140px 0 80px}
  .hero-stats{gap:28px}
  .tl{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:46px 22px}
}