:root{
    --green:#173f36;
    --green-2:#245f4c;
    --green-soft:#dbe8df;
    --cream:#f7f1e5;
    --paper:#fffaf0;
    --ink:#24302e;
    --muted:#65706c;
    --line:#e4dbc9;
    --shadow:0 22px 55px rgba(23,63,54,.12);
    --radius:26px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
    color:var(--ink);
    background:linear-gradient(180deg,#fbf7ed 0%,#f3ebdc 100%);
    line-height:1.75;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site-header{
    position:sticky;top:0;z-index:50;
    display:flex;align-items:center;justify-content:space-between;
    padding:16px clamp(18px,4vw,64px);
    background:rgba(247,241,229,.92);
    backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(36,95,76,.12);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--green);letter-spacing:.04em}
.brand span{font-size:20px}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:10px 14px;border-radius:999px;color:#35443f;font-size:15px}
.main-nav a:hover,.main-nav a.active{background:var(--green);color:var(--cream)}
.nav-toggle{display:none;background:var(--green);border:0;border-radius:13px;width:44px;height:40px;padding:10px;gap:4px;flex-direction:column;justify-content:center}
.nav-toggle span{display:block;height:2px;background:var(--cream);border-radius:2px;margin:3px 0}
main{overflow:hidden}
.container{width:min(1160px,calc(100% - 36px));margin:0 auto}
.hero{
    position:relative;
    min-height:680px;
    display:grid;
    grid-template-columns:1.08fr .92fr;
    gap:44px;
    align-items:center;
    padding:64px 0 58px;
}
.hero::before{
    content:"";position:absolute;inset:32px -15vw auto auto;width:48vw;height:48vw;
    background:radial-gradient(circle,rgba(36,95,76,.2),rgba(36,95,76,0) 68%);
    pointer-events:none;
}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green-2);font-weight:700;font-size:14px;letter-spacing:.08em;text-transform:uppercase}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--green-2)}
h1,.page-hero h1{font-size:clamp(40px,6vw,76px);line-height:1.08;margin:18px 0 22px;color:var(--green);letter-spacing:-.04em}
.lead{font-size:clamp(17px,2vw,21px);color:#495650;max-width:760px;margin:0 0 28px}
.hero-actions,.section-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 20px;border-radius:999px;font-weight:700;border:1px solid transparent;transition:.22s ease}
.btn.primary{background:var(--green);color:var(--cream);box-shadow:var(--shadow)}
.btn.primary:hover{transform:translateY(-2px);background:#0e3029}
.btn.ghost{border-color:rgba(23,63,54,.24);color:var(--green);background:rgba(255,250,240,.58)}
.btn.ghost:hover{background:var(--green-soft)}
.hero-panel{position:relative;background:rgba(255,250,240,.72);border:1px solid rgba(36,95,76,.14);border-radius:38px;padding:22px;box-shadow:var(--shadow)}
.hero-panel img{border-radius:28px;width:100%;background:#edf0e7}
.floating-card{position:absolute;left:-24px;bottom:28px;width:240px;background:rgba(23,63,54,.94);color:var(--cream);border-radius:24px;padding:18px;box-shadow:var(--shadow)}
.floating-card strong{display:block;font-size:18px;margin-bottom:6px}
.floating-card span{font-size:13px;color:#d7e3dc}
.section{padding:78px 0}
.section.alt{background:rgba(255,250,240,.56)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:32px}
.section-head h2{font-size:clamp(28px,4vw,46px);line-height:1.15;margin:0;color:var(--green);letter-spacing:-.025em}
.section-head p{margin:0;color:var(--muted);max-width:560px}
.grid{display:grid;gap:22px}
.grid.three{grid-template-columns:repeat(3,1fr)}
.grid.four{grid-template-columns:repeat(4,1fr)}
.card{background:rgba(255,250,240,.86);border:1px solid rgba(36,95,76,.13);border-radius:var(--radius);padding:24px;box-shadow:0 14px 34px rgba(23,63,54,.07)}
.card img{border-radius:20px;margin-bottom:16px;background:#edf0e7}
.card h3{font-size:21px;margin:8px 0 10px;color:var(--green)}
.card p{margin:0;color:#56615d}
.tag{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;background:var(--green-soft);color:var(--green);font-size:13px;font-weight:700}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;color:var(--muted);font-size:13px}
.meta-row span{padding:4px 9px;border:1px solid var(--line);border-radius:999px;background:#fffaf0}
.topic-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.topic-item{display:grid;grid-template-columns:92px 1fr;gap:18px;align-items:center;background:rgba(255,250,240,.84);border:1px solid rgba(36,95,76,.12);border-radius:24px;padding:16px}
.topic-item img{border-radius:18px;background:#edf0e7}
.topic-item h3{margin:0 0 6px;color:var(--green)}
.topic-item p{margin:0;color:var(--muted);font-size:15px}
.path{position:relative;display:grid;gap:18px;margin-top:16px}
.path::before{content:"";position:absolute;left:21px;top:18px;bottom:18px;width:2px;background:linear-gradient(var(--green-2),rgba(36,95,76,0))}
.path-step{position:relative;display:grid;grid-template-columns:44px 1fr;gap:18px;align-items:start}
.path-step .num{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--green);color:var(--cream);font-weight:800;z-index:1}
.path-step .box{background:rgba(255,250,240,.86);border:1px solid rgba(36,95,76,.12);border-radius:22px;padding:18px}
.path-step h3{margin:0 0 6px;color:var(--green)}
.path-step p{margin:0;color:var(--muted)}
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:42px;align-items:center}
.banner{border-radius:36px;background:linear-gradient(135deg,var(--green),#47695a);color:var(--cream);padding:44px;display:grid;grid-template-columns:1fr .7fr;gap:28px;align-items:center;box-shadow:var(--shadow)}
.banner h2{font-size:clamp(28px,4vw,46px);line-height:1.15;margin:0 0 14px}
.banner p{margin:0;color:#e7efe8}
.faq{display:grid;gap:14px}
.faq details{background:rgba(255,250,240,.88);border:1px solid rgba(36,95,76,.12);border-radius:20px;padding:18px 20px}
.faq summary{cursor:pointer;font-weight:800;color:var(--green)}
.faq p{margin:12px 0 0;color:var(--muted)}
.page-hero{padding:76px 0 48px;background:radial-gradient(circle at 80% 10%,rgba(36,95,76,.17),transparent 38%)}
.page-hero .lead{max-width:860px}
.kv{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.kv div{background:rgba(255,250,240,.84);border:1px solid rgba(36,95,76,.13);border-radius:22px;padding:18px}
.kv strong{display:block;color:var(--green);font-size:18px;margin-bottom:4px}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.filter-bar button{border:1px solid rgba(23,63,54,.18);background:#fffaf0;color:var(--green);border-radius:999px;padding:10px 14px;font-weight:700;cursor:pointer}
.filter-bar button.active{background:var(--green);color:var(--cream)}
.video-card{overflow:hidden;padding:0}
.video-thumb{position:relative;border-radius:26px 26px 0 0;overflow:hidden;background:#dfe9df}
.video-thumb::after{content:"▶";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:rgba(255,250,240,.9);color:var(--green);font-size:22px;box-shadow:0 10px 30px rgba(0,0,0,.12)}
.video-card .card-body{padding:22px}
.contact-form{display:grid;gap:14px;background:rgba(255,250,240,.86);border:1px solid rgba(36,95,76,.14);border-radius:28px;padding:24px;box-shadow:var(--shadow)}
.contact-form label{display:grid;gap:8px;font-weight:700;color:var(--green)}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;border:1px solid var(--line);border-radius:14px;background:#fffdf6;padding:13px 14px;font:inherit;color:var(--ink)}
.contact-form textarea{min-height:132px;resize:vertical}
.notice{background:var(--green-soft);border:1px solid rgba(36,95,76,.18);border-radius:22px;padding:18px;color:#2e4b42}
.site-footer{background:#102c26;color:#e8efe8;padding:52px clamp(18px,4vw,64px) 24px}
.footer-grid{display:grid;grid-template-columns:1.2fr .7fr 1fr;gap:28px;width:min(1160px,100%);margin:0 auto 32px}
.site-footer p{color:#c7d4cd;margin:8px 0 0}.site-footer a{display:block;color:#dfe9df;margin:7px 0}.footer-title{display:block;color:#fff;font-weight:800;margin-bottom:8px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;width:min(1160px,100%);margin:0 auto;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#c7d4cd}.domain-line{font-size:14px}
@media (max-width:980px){
    .hero,.split,.banner{grid-template-columns:1fr}.grid.three,.grid.four{grid-template-columns:repeat(2,1fr)}.section-head{display:block}.section-head p{margin-top:12px}.hero{min-height:auto}.floating-card{position:relative;left:auto;bottom:auto;width:auto;margin-top:14px}.topic-list{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.kv{grid-template-columns:1fr}
}
@media (max-width:760px){
    .site-header{padding:12px 18px}.nav-toggle{display:flex}.main-nav{position:absolute;left:18px;right:18px;top:72px;display:none;flex-direction:column;align-items:stretch;background:#fffaf0;border:1px solid rgba(36,95,76,.14);border-radius:20px;padding:10px;box-shadow:var(--shadow)}.main-nav.open{display:flex}.main-nav a{padding:12px 14px}.hero{padding-top:44px}.grid.three,.grid.four{grid-template-columns:1fr}.section{padding:56px 0}.banner{padding:28px}.topic-item{grid-template-columns:74px 1fr}.footer-grid{grid-template-columns:1fr}.page-hero{padding:54px 0 34px}h1,.page-hero h1{font-size:39px}
}