/* ============================================================
   北京绿色兄弟文化传媒有限公司 · 官网样式
   ============================================================ */
:root{
  --ink-900:#06231A;
  --green-800:#0B3A28;
  --green-700:#115740;
  --green-600:#167A55;
  --green-500:#1E9668;
  --green-400:#2FB47F;
  --green-50:#F3F9F5;
  --text:#0D2018;
  --muted:#5A7365;
  --line:#E3EDE7;
  --white:#fff;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  color:var(--text);background:var(--white);line-height:1.8;-webkit-font-smoothing:antialiased;font-size:16.5px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}

/* ================= 顶栏 ================= */
header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:82px}
.brand{display:flex;align-items:center;gap:14px;font-weight:800;font-size:19px;letter-spacing:.4px}
.logo{width:42px;height:42px;border-radius:12px;flex:none;
  background:linear-gradient(140deg,var(--green-600),var(--green-400));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:19px;font-weight:900;
  box-shadow:0 6px 16px rgba(22,122,85,.28)}
.menu{display:flex;gap:34px;font-size:15.5px;color:var(--muted);font-weight:500}
.menu a{position:relative;padding:8px 0;transition:color .25s}
.menu a:hover{color:var(--green-600)}
.menu a.on{color:var(--green-600);font-weight:700}
.menu a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--green-500);transition:width .3s}
.menu a:hover::after,.menu a.on::after{width:100%}
.navtoggle{display:none;font-size:24px;color:var(--green-700);background:none;border:0;cursor:pointer}

/* ================= Hero（首页） ================= */
.hero{position:relative;overflow:hidden;min-height:min(82vh,880px);display:flex;align-items:center;
  padding:120px 0;background:linear-gradient(158deg,#06231A 0%,#0B3A28 48%,#115740 100%)}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 460px at 84% 12%,rgba(47,180,127,.30),transparent 62%),
             radial-gradient(620px 420px at 8% 92%,rgba(255,255,255,.075),transparent 60%)}
.hero .wrap{position:relative;z-index:2}
.eyebrow{color:var(--green-600);font-weight:800;font-size:13.5px;letter-spacing:5px;text-transform:uppercase}
.hero .eyebrow{color:var(--green-400)}
.hero h1{color:#fff;font-size:clamp(34px,5.8vw,62px);font-weight:900;letter-spacing:2px;line-height:1.24;margin-top:26px}
.hero .sub{color:rgba(255,255,255,.9);font-size:clamp(16px,2.3vw,22px);margin-top:26px;letter-spacing:7px;font-weight:500}
.hero .desc{color:rgba(255,255,255,.66);font-size:16.5px;margin-top:30px;max-width:720px;line-height:2}
.hero-cta{display:flex;gap:18px;margin-top:50px;flex-wrap:wrap}

/* ================= 子页 Banner ================= */
.phero{position:relative;overflow:hidden;padding:96px 0 86px;
  background:linear-gradient(158deg,#06231A 0%,#0B3A28 55%,#115740 100%)}
.phero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(680px 380px at 86% 16%,rgba(47,180,127,.26),transparent 64%)}
.phero .wrap{position:relative;z-index:2}
.phero h1{color:#fff;font-size:clamp(28px,4.2vw,46px);font-weight:900;letter-spacing:2px;margin-top:18px}
.phero p{color:rgba(255,255,255,.68);margin-top:20px;max-width:760px;font-size:16.5px}
.crumb{color:rgba(255,255,255,.5);font-size:14px;letter-spacing:1px}
.crumb a:hover{color:var(--green-400)}

/* ================= 按钮 ================= */
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:15.5px;
  padding:16px 38px;border-radius:999px;transition:transform .22s,box-shadow .22s,background .22s;cursor:pointer;border:0}
.btn-solid{background:#fff;color:var(--green-700);box-shadow:0 10px 30px rgba(0,0,0,.22)}
.btn-solid:hover{transform:translateY(-3px);box-shadow:0 16px 38px rgba(0,0,0,.3)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-3px)}
.btn-green{background:var(--green-600);color:#fff;box-shadow:0 10px 26px rgba(22,122,85,.28)}
.btn-green:hover{transform:translateY(-3px);background:var(--green-500)}
.btn-line{border:1.5px solid var(--line);color:var(--green-700);background:#fff}
.btn-line:hover{border-color:var(--green-400);transform:translateY(-3px)}

/* ================= 区块 ================= */
section{padding:118px 0}
.sec-soft{background:var(--green-50)}
.sec-dark{background:linear-gradient(158deg,#06231A,#0B3A28 60%,#115740);color:#fff;position:relative;overflow:hidden}
.sec-dark::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(700px 420px at 88% 20%,rgba(47,180,127,.24),transparent 64%)}
.sec-dark .wrap{position:relative;z-index:2}
.sec-dark .eyebrow{color:var(--green-400)}
.sec-dark .lead{color:rgba(255,255,255,.72)}
h2.title{font-size:clamp(27px,3.6vw,40px);font-weight:900;margin-top:18px;letter-spacing:1px;line-height:1.35}
.lead{color:var(--muted);margin-top:24px;max-width:880px;font-size:16.5px;line-height:2}
.lead + .lead{margin-top:16px}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}

/* ================= 数据卡 ================= */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:62px}
.stat{background:#fff;border:1px solid var(--line);border-radius:20px;padding:38px 26px;text-align:center;
  box-shadow:0 2px 14px rgba(13,32,24,.045);transition:transform .25s,box-shadow .25s}
.stat:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(13,32,24,.10)}
.stat b{display:block;font-size:27px;font-weight:900;color:var(--green-600);letter-spacing:1px}
.stat span{display:block;margin-top:12px;font-size:14.5px;color:var(--muted)}

/* ================= 卡片 ================= */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;margin-top:64px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:56px}
.card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:44px 40px;
  transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-6px);box-shadow:0 22px 48px rgba(13,32,24,.10);border-color:#BFDCCB}
.card .ic{width:58px;height:58px;border-radius:16px;background:var(--green-50);
  display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:26px}
.card h3{font-size:21px;font-weight:800;letter-spacing:.5px}
.card p{color:var(--muted);font-size:15.5px;margin-top:16px;line-height:1.95}
.card ul{list-style:none;margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
.card li{font-size:13px;color:var(--green-700);background:var(--green-50);padding:7px 16px;border-radius:999px;font-weight:600}
.card .more{display:inline-flex;align-items:center;gap:8px;margin-top:26px;color:var(--green-600);font-weight:800;font-size:14.5px}

/* ================= 明星闹铃 ================= */
.prod{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center;margin-top:20px}
.prod-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:800;letter-spacing:3px;
  color:var(--green-400);border:1px solid rgba(47,180,127,.42);padding:8px 18px;border-radius:999px}
.prod h2{color:#fff;font-size:clamp(28px,4vw,44px);font-weight:900;margin-top:26px;letter-spacing:2px}
.prod .prod-desc{color:rgba(255,255,255,.75);margin-top:24px;font-size:16.5px;line-height:2.05}
.prod-feat{list-style:none;margin-top:38px;display:grid;gap:20px}
.prod-feat li{display:flex;gap:18px;align-items:flex-start}
.prod-feat .dot{width:34px;height:34px;border-radius:11px;flex:none;margin-top:2px;
  background:rgba(47,180,127,.16);border:1px solid rgba(47,180,127,.32);
  display:flex;align-items:center;justify-content:center;font-size:15px}
.prod-feat b{display:block;color:#fff;font-size:16px;font-weight:800}
.prod-feat span span{display:block;color:rgba(255,255,255,.6);font-size:14.5px;margin-top:5px;line-height:1.85}
.prod-visual{border-radius:26px;min-height:390px;
  background:linear-gradient(150deg,rgba(47,180,127,.20),rgba(255,255,255,.05));
  border:1px solid rgba(255,255,255,.14);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;
  box-shadow:0 30px 70px rgba(0,0,0,.28)}
.prod-visual .big{font-size:64px}
.prod-visual .cap{color:rgba(255,255,255,.8);font-weight:800;letter-spacing:5px;font-size:15px}
.prod-visual .sub{color:rgba(255,255,255,.45);font-size:13.5px;letter-spacing:1px}

/* ================= 服务/案例 ================= */
.svc{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;
  transition:transform .25s,box-shadow .25s,border-color .25s}
.svc:hover{transform:translateY(-6px);box-shadow:0 22px 48px rgba(13,32,24,.10);border-color:#BFDCCB}
.svc .svc-top{padding:34px 36px 0}
.svc .ic{width:54px;height:54px;border-radius:15px;background:var(--green-50);
  display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:22px}
.svc h3{font-size:20px;font-weight:800}
.svc p{color:var(--muted);font-size:15.5px;margin-top:14px;line-height:1.95}
.svc .svc-body{padding:0 36px 34px}
.svc ul{list-style:none;margin-top:20px;display:grid;gap:10px}
.svc li{font-size:14.5px;color:var(--muted);display:flex;gap:10px}
.svc li::before{content:"—";color:var(--green-400);font-weight:800}

/* 案例卡 */
.case{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;
  transition:transform .25s,box-shadow .25s,border-color .25s}
.case:hover{transform:translateY(-6px);box-shadow:0 22px 48px rgba(13,32,24,.10);border-color:#BFDCCB}
.case .cover{height:186px;background:linear-gradient(150deg,var(--green-800),var(--green-600));
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.85);font-size:34px}
.case .body{padding:30px 32px 34px}
.case .tag{display:inline-block;font-size:12.5px;font-weight:800;color:var(--green-700);
  background:var(--green-50);padding:5px 13px;border-radius:999px}
.case h3{font-size:19px;font-weight:800;margin-top:16px}
.case p{color:var(--muted);font-size:15px;margin-top:12px;line-height:1.9}
.case .meta{margin-top:18px;font-size:13.5px;color:var(--green-600);font-weight:700}

/* 资质卡 */
.honor{background:#fff;border:1px solid var(--line);border-radius:22px;padding:38px 34px;text-align:center;
  transition:transform .25s,box-shadow .25s,border-color .25s}
.honor:hover{transform:translateY(-6px);box-shadow:0 22px 48px rgba(13,32,24,.10);border-color:#BFDCCB}
.honor .badge{width:72px;height:72px;margin:0 auto 22px;border-radius:20px;background:var(--green-50);
  display:flex;align-items:center;justify-content:center;font-size:30px}
.honor h3{font-size:18px;font-weight:800}
.honor p{color:var(--muted);font-size:14.5px;margin-top:12px;line-height:1.9}
.honor .st{display:inline-block;margin-top:18px;font-size:12.5px;font-weight:800;color:var(--green-600);
  border:1px dashed var(--green-400);padding:6px 16px;border-radius:999px}

/* ================= 联系 ================= */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start;margin-top:64px}
.info-row{display:flex;gap:22px;padding:26px 0;border-bottom:1px dashed var(--line)}
.info-row:last-child{border-bottom:0}
.info-row .k{flex:none;width:92px;color:var(--muted);font-size:15px}
.info-row .v{font-weight:800;font-size:18px;letter-spacing:.3px;word-break:break-all}
.info-row .v small{display:block;font-weight:400;color:var(--muted);font-size:14px;margin-top:6px;letter-spacing:0}
.panel{background:var(--green-50);border:1px solid var(--line);border-radius:24px;padding:46px 42px}
.panel h3{font-size:19px;font-weight:800;letter-spacing:.5px}
.panel p{color:var(--muted);font-size:15px;margin-top:16px;line-height:2}
.panel .kv{margin-top:30px;display:grid;gap:20px}
.panel .kv div{display:flex;justify-content:space-between;gap:16px;font-size:15.5px}
.panel .kv b{color:var(--green-700);font-weight:800;text-align:right}

/* ================= CTA 条 ================= */
.cta-bar{background:linear-gradient(158deg,#06231A,#0B3A28 60%,#115740);color:#fff;position:relative;overflow:hidden}
.cta-bar::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(640px 340px at 84% 30%,rgba(47,180,127,.26),transparent 66%)}
.cta-bar .wrap{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta-bar h2{font-size:clamp(23px,3vw,32px);font-weight:900;letter-spacing:1px}
.cta-bar p{color:rgba(255,255,255,.66);margin-top:12px;font-size:16px}

/* ================= 页脚 ================= */
footer{background:var(--ink-900);color:rgba(255,255,255,.62);padding:64px 0 40px;font-size:14.5px}
footer .fnav{display:flex;gap:28px;flex-wrap:wrap;margin-bottom:34px}
footer .fnav a:hover{color:var(--green-400)}
footer .fbot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center;
  border-top:1px solid rgba(255,255,255,.1);padding-top:28px}
footer b{color:#fff;font-weight:800;letter-spacing:.4px}

/* ================= 响应式 ================= */
@media (max-width:960px){
  .wrap{padding:0 22px}
  .menu{display:none}
  .navtoggle{display:block}
  .menu.open{display:flex;position:absolute;top:70px;left:0;right:0;background:#fff;
    flex-direction:column;gap:0;padding:10px 22px 18px;border-bottom:1px solid var(--line);
    box-shadow:0 14px 30px rgba(13,32,24,.08)}
  .menu.open a{padding:13px 0;border-bottom:1px solid var(--line)}
  section{padding:72px 0}
  .hero{padding:92px 0;min-height:auto}
  .hero .sub{letter-spacing:4px}
  .stats{grid-template-columns:repeat(2,1fr);gap:16px;margin-top:44px}
  .stat{padding:28px 18px}
  .grid,.grid-3{grid-template-columns:1fr;gap:20px;margin-top:44px}
  .card{padding:32px 26px}
  .prod{grid-template-columns:1fr;gap:44px}
  .prod-visual{min-height:260px}
  .contact{grid-template-columns:1fr;gap:38px;margin-top:44px}
  .panel{padding:34px 26px}
  .nav{height:70px}
  .phero{padding:68px 0 60px}
}