/* ============================================================
   绿森林包装官网 · 设计系统
   主色：墨绿（稳、专业、B2B 信任感）
   强调：铜金（高档感）
   底色：米白（不刺眼，长时间阅读舒适）
   ============================================================ */

:root{
  --ink:#1b2a26;          /* 主文字 */
  --ink-2:#3d4d48;        /* 次级文字 */
  --muted:#71827c;        /* 辅助文字 */
  --green:#17453b;        /* 主品牌色 */
  --green-deep:#0e2f28;   /* 深底 */
  --green-soft:#eef3f1;   /* 浅绿底 */
  --gold:#b98b47;         /* 强调色 */
  --gold-soft:#f6efe3;
  --paper:#faf8f4;        /* 页面底色 */
  --white:#fff;
  --line:#e6e0d6;
  --line-2:#eee9e0;
  --radius:6px;
  --shadow:0 1px 2px rgba(27,42,38,.04), 0 8px 24px rgba(27,42,38,.06);
  --shadow-hover:0 2px 4px rgba(27,42,38,.06), 0 16px 40px rgba(27,42,38,.10);
  --maxw:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:600;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 顶栏 ---------- */
.top{background:var(--green-deep);color:#c9d8d3;font-size:13px}
.top .wrap{display:flex;justify-content:space-between;align-items:center;min-height:38px;gap:16px}
.top b{color:#fff;font-weight:500}
.top a{color:var(--gold);font-weight:600}
@media(max-width:720px){.top .wrap{justify-content:center}.top .t-hide{display:none}}

/* ---------- 页头 ---------- */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line-2)}
.hd .wrap{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;letter-spacing:.02em;color:var(--green)}
.logo .mark{width:30px;height:30px;border-radius:3px;background:linear-gradient(150deg,var(--green),#2c6a58);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;flex:0 0 auto}
.logo small{display:block;font-size:10px;font-weight:400;letter-spacing:.22em;color:var(--muted);line-height:1;margin-top:2px}
.nav{display:flex;gap:30px;font-size:15px}
@media(max-width:1180px){.nav{gap:19px;font-size:14.5px}}
@media(max-width:1024px){.nav{gap:14px;font-size:14px}}
.nav a{color:var(--ink-2);padding:4px 0;border-bottom:2px solid transparent;transition:.18s}
.nav a:hover{color:var(--green)}
.nav a.on{color:var(--green);font-weight:600;border-bottom-color:var(--gold)}
.hd-cta{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.hd-tel{text-align:right;line-height:1.25}
.hd-tel em{display:block;font-style:normal;font-size:11px;color:var(--muted);letter-spacing:.06em}
.hd-tel b{font-size:16px;color:var(--green);letter-spacing:.02em}
@media(max-width:960px){.nav{display:none}.hd-tel{display:none}}
@media(max-width:520px){.logo small{display:none}.hd .wrap{min-height:58px}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;font-size:15px;font-weight:600;border-radius:var(--radius);border:1px solid transparent;cursor:pointer;transition:.2s;white-space:nowrap;font-family:inherit;line-height:1.4}
.btn-p{background:var(--green);color:#fff}
.btn-p:hover{background:#0e352c}
.btn-g{background:var(--gold);color:#fff}
.btn-g:hover{background:#a67a3a}
.btn-o{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-o:hover{border-color:var(--green);color:var(--green)}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-mobile{display:none}
@media(max-width:960px){.btn-desktop{display:none}.btn-mobile{display:inline-flex}}

/* ---------- 首屏 ---------- */
.hero{position:relative;background:var(--green-deep);color:#fff;overflow:hidden;isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;z-index:1;background:
  linear-gradient(90deg,rgba(8,28,22,.92) 0%,rgba(8,28,22,.78) 45%,rgba(8,28,22,.42) 100%),
  radial-gradient(1100px 460px at 82% -10%, rgba(185,139,71,.22), transparent 62%),
  radial-gradient(760px 420px at 6% 108%, rgba(44,106,88,.42), transparent 66%);}
.hero::after{content:"";position:absolute;inset:0;z-index:1;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.10) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:56px 56px;mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 78%)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 40%;z-index:0}
.hero .wrap{position:relative;z-index:2;padding-top:74px;padding-bottom:64px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;color:var(--gold);border:1px solid rgba(185,139,71,.45);border-radius:100px;padding:5px 14px;margin-bottom:22px}
.hero h1{font-size:clamp(28px,4.2vw,46px);font-weight:700;letter-spacing:.01em;max-width:900px}
.hero h1 .hl{color:#e8c98f}
.hero .lead{margin-top:20px;max-width:760px;font-size:17px;line-height:1.95;color:#c4d4ce}
.hero .acts{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
@media(max-width:720px){.hero .wrap{padding-top:52px;padding-bottom:46px}.hero .lead{font-size:16px}}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:rgba(255,255,255,.14);margin-top:52px;border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);overflow:hidden}
.stats li{background:rgba(255,255,255,.045);padding:20px 14px}
.stats b{display:block;font-size:26px;color:#fff;font-weight:700;letter-spacing:.01em}
.stats b i{font-style:normal;font-size:15px;font-weight:500;margin-left:2px;color:#c4d4ce}
.stats span{display:block;font-size:13px;color:#9fb4ad;margin-top:4px}
@media(max-width:1080px){.stats{grid-template-columns:repeat(3,1fr)}.stats b{font-size:23px}}
@media(max-width:860px){.stats{grid-template-columns:repeat(2,1fr);margin-top:38px}}
@media(max-width:460px){.stats b{font-size:22px}}

/* ---------- 区块 ---------- */
.sec{padding:76px 0}
.sec.alt{background:#fff;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.sec-h{max-width:820px;margin-bottom:42px}
.sec-h .kicker{display:block;font-size:13px;letter-spacing:.16em;color:var(--gold);font-weight:600;margin-bottom:10px}
.sec-h h2{font-size:clamp(23px,2.8vw,31px);color:var(--green)}
.sec-h p{margin-top:14px;color:var(--ink-2);font-size:16px}
.sec-h.center{margin-left:auto;margin-right:auto;text-align:center}
@media(max-width:720px){.sec{padding:52px 0}.sec-h{margin-bottom:28px}}

/* ---------- 品类卡 ---------- */
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:960px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.g3,.g2,.g4{grid-template-columns:1fr}}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.22s}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#d9d2c6}
.card .thumb{position:relative;aspect-ratio:4/3;background:linear-gradient(140deg,#f1ece3,#e5ded1);display:grid;place-items:center;color:#a99b86;font-size:13px;letter-spacing:.05em;border-bottom:1px solid var(--line-2)}
.card .thumb::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(0,0,0,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(0,0,0,.028) 1px,transparent 1px);background-size:26px 26px}
.card .thumb span{position:relative;z-index:1;border:1px dashed #c3b7a3;border-radius:100px;padding:5px 14px;background:rgba(255,255,255,.6)}
.card .body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column}
.card h3{font-size:18px;color:var(--green)}
.card h3 a:hover{color:var(--gold)}
.card .desc{margin-top:9px;font-size:14px;color:var(--ink-2);line-height:1.8;flex:1}
.card .meta{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12px;color:var(--green);background:var(--green-soft);border-radius:3px;padding:3px 9px}
.tag.gold{color:#8d6a2f;background:var(--gold-soft)}
.card .more{margin-top:14px;font-size:14px;font-weight:600;color:var(--green)}
.card .more::after{content:" →";color:var(--gold)}

/* ---------- 通用信息块 ---------- */
.rows{display:grid;gap:18px}
.row{background:#fff;border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:0 var(--radius) var(--radius) 0;padding:20px 24px}
.row h4{font-size:16px;color:var(--green);margin-bottom:7px}
.row p{font-size:14.5px;color:var(--ink-2)}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 16px;position:relative}
.step b{display:block;font-size:13px;color:var(--gold);letter-spacing:.1em;margin-bottom:8px}
.step h4{font-size:15px;color:var(--green)}
.step p{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.7}
@media(max-width:960px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}

/* ---------- 图片位 ---------- */
.ph{position:relative;background:linear-gradient(140deg,#f1ece3,#e5ded1);border:1px solid var(--line);border-radius:var(--radius);display:grid;place-items:center;color:#a2947d;font-size:13px;overflow:hidden}
.ph::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(0,0,0,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(0,0,0,.03) 1px,transparent 1px);background-size:28px 28px}
.ph span{position:relative;z-index:1;border:1px dashed #c3b7a3;border-radius:100px;padding:5px 14px;background:rgba(255,255,255,.65)}
.ph.tall{aspect-ratio:4/5}
.ph.wide{aspect-ratio:16/9}

/* ---------- 实拍图片 ---------- */
.ph img{display:block;width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
.card .thumb img{display:block;width:100%;height:100%;object-fit:cover;position:relative;z-index:1;transition:transform .3s}
.card:hover .thumb img{transform:scale(1.04)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 40%}
figure.case{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
figure.case img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover}
figure.case figcaption{padding:10px 14px;font-size:13px;color:var(--ink-2);border-top:1px solid var(--line-2);background:#fff}

/* ---------- 表格 ---------- */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:14.5px}
.tbl th,.tbl td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line-2)}
.tbl th{background:var(--green-soft);color:var(--green);font-weight:600;width:34%;white-space:nowrap}
.tbl tr:last-child th,.tbl tr:last-child td{border-bottom:0}

/* ---------- FAQ ---------- */
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.faq details{border-bottom:1px solid var(--line-2)}
.faq details:last-child{border-bottom:0}
.faq summary{cursor:pointer;padding:19px 22px;font-size:16px;font-weight:600;color:var(--green);list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";color:var(--gold);font-weight:400;flex:0 0 auto;font-size:18px;line-height:1.2}
.faq details[open] summary::after{content:"－"}
.faq .ans{padding:0 22px 22px;color:var(--ink-2);font-size:14.5px;line-height:1.9}
.faq .ans p+p{margin-top:10px}
.faq .ans strong{color:var(--green)}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:var(--muted);padding:16px 0 0}
.crumb a:hover{color:var(--green)}
.crumb span{margin:0 7px;opacity:.5}

/* ---------- 正文页头 ---------- */
.phead{background:#fff;border-bottom:1px solid var(--line-2);padding:34px 0 38px}
.phead h1{font-size:clamp(25px,3.4vw,36px);color:var(--green)}
.phead .lead{margin-top:14px;max-width:820px;color:var(--ink-2);font-size:16.5px}
.phead .tags{margin-top:18px;display:flex;flex-wrap:wrap;gap:8px}

/* ---------- CTA 条 ---------- */
.cta{background:linear-gradient(120deg,var(--green-deep),#1c5344);color:#fff;border-radius:var(--radius);padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta::after{content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(185,139,71,.28),transparent 68%)}
.cta h3{font-size:22px;position:relative}
.cta p{margin-top:8px;color:#bccfc9;font-size:14.5px;position:relative;max-width:560px}
.cta .acts{display:flex;gap:12px;flex-wrap:wrap;position:relative}
@media(max-width:720px){.cta{padding:28px 24px}}

/* ---------- 页脚 ---------- */
.ft{background:var(--green-deep);color:#9fb4ad;font-size:14px;margin-top:0}
.ft .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;padding:56px 0 40px}
.ft h5{color:#fff;font-size:15px;margin:0 0 16px;font-weight:600}
.ft li{margin-bottom:9px;line-height:1.7}
.ft a:hover{color:var(--gold)}
.ft .brand{color:#fff;font-weight:700;font-size:18px;margin-bottom:12px}
.ft .brand small{display:block;font-size:11px;font-weight:400;letter-spacing:.2em;color:#7e978f;margin-top:4px}
.ft .legal{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;font-size:13px;color:#7e978f;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.ft .legal a{color:#9fb4ad}
@media(max-width:960px){.ft .cols{grid-template-columns:1fr 1fr;gap:28px;padding:42px 0 30px}}
@media(max-width:520px){.ft .cols{grid-template-columns:1fr}}

/* ---------- 移动端底部悬浮条 ---------- */
.bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;background:rgba(255,255,255,.97);border-top:1px solid var(--line);padding:10px 12px;gap:10px;backdrop-filter:blur(10px)}
.bar .btn{flex:1}
@media(max-width:720px){.bar{display:flex}body{padding-bottom:66px}}

/* ---------- 杂项 ---------- */
.note{background:var(--gold-soft);border:1px solid #eadfc8;border-radius:var(--radius);padding:16px 20px;font-size:14px;color:#7a5f2c;line-height:1.8}
.two{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}
@media(max-width:860px){.two{grid-template-columns:1fr;gap:24px}}
.chk{margin-top:12px}
.chk li{position:relative;padding-left:26px;margin-bottom:9px;font-size:14.5px;color:var(--ink-2)}
.chk li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--gold)}
.hr{height:1px;background:var(--line-2);margin:0}

/* ---------- 微信咨询弹窗 ---------- */
.wx-fab{position:fixed;right:20px;bottom:24px;z-index:90;display:flex;flex-direction:column;align-items:center;gap:6px}
.wx-fab .fab-btn{
  width:62px;height:62px;border-radius:50%;background:var(--green);color:#fff;border:none;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  box-shadow:0 6px 20px rgba(23,69,59,.32);font-family:inherit;transition:transform .18s ease,background .18s ease;
}
.wx-fab .fab-btn:hover{background:var(--gold);transform:translateY(-2px)}
.wx-fab .fab-btn svg{width:24px;height:24px;fill:currentColor}
.wx-fab .fab-btn em{font-style:normal;font-size:10.5px;letter-spacing:.02em}
@media(max-width:720px){.wx-fab{bottom:78px;right:12px}.wx-fab .fab-btn{width:54px;height:54px}}

.mask{position:fixed;inset:0;background:rgba(14,47,40,.55);z-index:120;display:none;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(3px)}
.mask.on{display:flex}
.mask .box{background:#fff;border-radius:12px;max-width:400px;width:100%;overflow:hidden;box-shadow:0 24px 60px rgba(14,47,40,.3);position:relative;animation:pop .22s ease}
@keyframes pop{from{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:none}}
.mask .close{position:absolute;right:10px;top:8px;width:32px;height:32px;border:none;background:transparent;color:#9aa8a2;font-size:24px;line-height:1;cursor:pointer;font-family:inherit}
.mask .close:hover{color:var(--ink)}
.mask .hd{background:var(--green);color:#fff;padding:20px 24px 18px}
.mask .hd h4{font-size:17px;font-weight:600}
.mask .hd p{margin-top:5px;font-size:13px;color:#bccfc9;line-height:1.6}
.mask .bd{padding:22px 24px 24px;text-align:center}
.mask .qr{width:190px;height:190px;margin:0 auto;background:var(--green-soft);border:1px solid var(--line);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted);text-align:center;line-height:1.7;padding:16px}
.mask .qr img{width:100%;height:100%;object-fit:contain}
.mask .wxid{margin-top:16px;font-size:15px;color:var(--ink)}
.mask .wxid b{color:var(--green);font-size:17px}
.mask .copy{
  margin-top:10px;display:inline-flex;align-items:center;gap:6px;padding:8px 20px;border-radius:var(--radius);
  border:1px solid var(--gold);color:var(--gold);background:var(--gold-soft);font-size:14px;cursor:pointer;font-family:inherit;transition:.18s;
}
.mask .copy:hover{background:var(--gold);color:#fff}
.mask .copy.ok{background:#e8f3ee;border-color:#2f7d5f;color:#2f7d5f}
.mask .or{margin:18px 0 12px;font-size:12.5px;color:var(--muted);position:relative}
.mask .or::before,.mask .or::after{content:"";position:absolute;top:50%;width:26%;height:1px;background:var(--line)}
.mask .or::before{left:0}.mask .or::after{right:0}
.mask .tel{display:block;width:100%;padding:13px;border-radius:var(--radius);background:var(--green);color:#fff;font-size:16px;font-weight:600;text-align:center}
.mask .tel:hover{background:var(--gold)}
.mask .tip{margin-top:14px;font-size:12.5px;color:var(--muted);line-height:1.7}

/* ---------- 工厂身份说明块 ---------- */
.idcard{background:var(--white);border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:var(--radius);padding:20px 24px;font-size:15px;line-height:1.85;color:var(--ink-2)}
.idcard b{color:var(--green)}
@media(max-width:600px){.idcard{padding:16px 18px}}