/* ===== 久久壹家 官网样式 ===== */
:root{
  --green:#2B4D2B;        /* 久久墨绿 品牌主色 */
  --green-deep:#1E361E;   /* 品牌深绿 */
  --green-light:#3C6B3C;
  --red:#9E2B25;          /* 印雪红 */
  --red-soft:#B8443D;
  --gold:#C9A86A;         /* 浅金 */
  --gold-soft:#E4CB97;
  --paper:#F7F4EC;        /* 宣纸米白 */
  --paper-2:#EFE9DC;
  --ink:#23261F;
  --ink-soft:#5A5F52;
  --white:#fff;
  --shadow:0 10px 30px rgba(30,54,30,.12);
  --maxw:1180px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
section[id]{scroll-margin-top:68px}
body{
  font-family:"Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:"Noto Serif SC",serif;font-weight:700;line-height:1.3}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
ul{list-style:none}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(247,244,236,.82);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(43,77,43,.12);transition:all .3s ease;
}
.site-header.scrolled{background:rgba(43,77,43,.96);border-bottom-color:transparent}
.site-header.scrolled .nav-link{color:var(--paper)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px}
.brand-seal{display:block;width:44px;height:44px;object-fit:contain}
.brand-slogan{
  font-family:"Noto Serif SC",serif;font-size:18px;font-weight:700;
  color:var(--green-deep);letter-spacing:.5px;white-space:nowrap
}
.site-header.scrolled .brand-slogan{color:var(--paper)}
.main-nav{display:flex;gap:26px}
.nav-link{font-size:15px;color:var(--ink);font-weight:500;position:relative;padding:4px 0;transition:color .2s}
.nav-link::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--gold);transition:width .25s}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-link.active{color:var(--green);font-weight:700}
.site-header.scrolled .nav-link.active{color:var(--gold-soft)}
.nav-toggle{display:none;background:none;border:none;font-size:26px;color:var(--green);cursor:pointer}

/* ===== 首页 Hero ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;background:var(--green-deep)}
.hero-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 75% 20%,rgba(201,168,106,.22),transparent 45%),
    radial-gradient(circle at 15% 80%,rgba(60,107,60,.55),transparent 50%),
    linear-gradient(135deg,#1E361E,#2B4D2B 60%,#22401F);
}
.hero-bg::after{content:"";position:absolute;inset:0;opacity:.06;background-image:repeating-linear-gradient(45deg,#fff 0 1px,transparent 1px 28px)}
.hero-inner{position:relative;z-index:2;color:#fff;text-align:center;padding:120px 24px 80px;max-width:880px;margin:0 auto}
.home-seal{display:block;width:min(210px,42vw);height:auto;margin:0 auto 32px}
.home-title{
  font-size:clamp(34px,5.5vw,72px);font-weight:900;letter-spacing:2px;
  text-shadow:0 4px 20px rgba(0,0,0,.35);white-space:nowrap
}
.home-slogan{font-family:"Noto Serif SC",serif;font-size:clamp(18px,3vw,26px);color:var(--gold-soft);margin-top:14px;letter-spacing:3px}
.home-sub{color:rgba(255,255,255,.72);font-size:15px;margin-top:8px}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.btn{padding:13px 32px;border-radius:40px;font-weight:700;font-size:15px;transition:transform .2s,box-shadow .2s;display:inline-block}
.btn:hover{transform:translateY(-3px)}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-soft));color:#3a2c10;box-shadow:0 8px 22px rgba(201,168,106,.4)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-soft)}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:var(--gold-soft);font-size:34px;z-index:3;animation:bob 1.8s infinite}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,10px)}}

.close-btn{background:var(--green);color:#fff;font-weight:700;padding:14px 34px;border-radius:40px;font-size:15px;transition:transform .2s,background .2s;display:inline-block}
.close-btn:hover{transform:translateY(-3px);background:var(--green-deep)}
.close-btn.ghost{background:transparent;border:1.5px solid var(--green);color:var(--green)}
.close-btn.ghost:hover{background:var(--green);color:#fff}

/* ===== 通用 section ===== */
.section{padding:96px 0;position:relative}
.section:nth-of-type(even){background:var(--paper-2)}
.section-red{background:linear-gradient(180deg,#FBF1EE,#F7E7E3)}
.section-gold{background:linear-gradient(180deg,#FAF4E6,#F4EAD2)}
.section-head{margin-bottom:14px}
.sec-title{font-size:clamp(28px,4.5vw,42px);color:var(--green);position:relative;display:inline-block}
.sec-title::after{content:"";display:block;width:54px;height:4px;background:var(--red);margin-top:10px;border-radius:2px}
.sec-sub{color:var(--ink-soft);font-size:15px;margin-top:10px}
.block-title{font-size:22px;color:var(--green-deep);margin:42px 0 20px;padding-left:14px;border-left:5px solid var(--gold)}
.bullet li{position:relative;padding-left:20px;margin-bottom:9px;color:var(--ink);font-size:15px}
.bullet li::before{content:"·";position:absolute;left:4px;color:var(--red);font-weight:900;font-size:20px;top:-2px}

/* ===== 品牌与信任 ===== */
.brand-story{
  display:grid;grid-template-columns:1fr;gap:22px;margin-top:24px;align-items:start
}
#brand .section-head.reveal{opacity:1;transform:none}
.story-card{background:var(--white);border-radius:14px;padding:30px;box-shadow:var(--shadow);border-top:4px solid var(--green)}
.story-card h3{color:var(--green);margin-bottom:16px;font-size:20px}
.story-brief{
  position:relative;overflow:hidden;padding:26px 30px;
  background:
    linear-gradient(135deg,#fffdf7 0%,#f6efdf 100%);
  border:1px solid rgba(201,168,106,.42);border-top:4px solid var(--gold);
  display:grid;grid-template-columns:240px 1fr;gap:26px;align-items:center
}
.story-brief::after{
  content:"久";position:absolute;right:22px;bottom:-44px;
  font-family:"Noto Serif SC",serif;font-size:170px;font-weight:900;
  color:rgba(201,168,106,.09);line-height:1;pointer-events:none
}
.story-brief h3{
  position:relative;display:flex;align-items:center;margin-bottom:0;padding:24px 24px 28px;
  min-height:112px;font-size:27px;color:#fff;
  background:linear-gradient(135deg,var(--green-deep),var(--green));
  border-radius:8px;box-shadow:0 12px 28px rgba(30,54,30,.12)
}
.story-brief h3::after{
  content:"";position:absolute;left:24px;bottom:22px;width:86px;height:3px;
  background:var(--gold);border-radius:3px
}
.story-brief .bullet{position:relative;z-index:1}
.story-brief .bullet{
  display:grid;grid-template-columns:.92fr 1fr 1.18fr;gap:14px;
  padding:0;border:0;border-radius:0;background:transparent;backdrop-filter:none
}
.story-brief .bullet li{
  margin-bottom:0;padding:18px 20px;line-height:1.72;font-size:14px;
  color:#4c5047;background:rgba(255,255,255,.72);
  border:1px solid rgba(201,168,106,.3);border-radius:8px
}
.story-brief .bullet li+li{border-left:1px solid rgba(201,168,106,.3)}
.story-brief .bullet li b{
  display:block;color:var(--green-deep);font-size:15px;margin-bottom:6px;
  padding-left:12px;position:relative;white-space:nowrap
}
.story-brief .bullet li b::before{
  content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;
  border-radius:50%;background:var(--red)
}
.story-brief .bullet li span{display:block}
.story-brief .bullet li::before{display:none}
.story-brief .bullet li:last-child{margin-bottom:0}
.values{padding:28px 30px 30px}
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.value-item{
  text-align:left;padding:20px 18px 18px;border-radius:10px;
  background:#f8f3e8;
  border:1px solid rgba(201,168,106,.36)
}
.value-item span{
  width:44px;height:44px;border-radius:50%;color:#fff;display:grid;place-items:center;
  margin:0 0 12px;font-family:"Noto Serif SC",serif;font-weight:900;font-size:22px
}
.v-zheng{background:var(--red)} .v-xin{background:var(--green)} .v-fen{background:var(--gold)} .v-xin2{background:var(--green-light)}
.value-item b{display:block;color:var(--green-deep);margin-bottom:8px;font-size:15px}
.value-item p{font-size:12.5px;color:#57594f;line-height:1.72;text-align:left}
.brand-story .story-card.reveal,
.brand-story .value-item.reveal{opacity:1;transform:none}

/* ===== 产品与体验 ===== */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.product-card{background:var(--white);border-radius:16px;padding:30px;box-shadow:var(--shadow);border-top:5px solid var(--red);transition:transform .25s}
.product-card:hover{transform:translateY(-6px)}
.product-card h3{color:var(--green-deep);margin-bottom:14px;font-size:21px}

.lvtu-block{margin-top:40px}
.lvtu-inner{display:flex;gap:24px;align-items:center;background:var(--white);border-radius:16px;padding:30px;box-shadow:var(--shadow);border-left:5px solid var(--green);flex-wrap:wrap}
.lvtu-intro{flex:1;min-width:280px}
.lvtu-intro p{margin-bottom:8px;font-size:15px}
.lvtu-cta{display:flex;gap:14px;flex-wrap:wrap}
.lvtu-cta.is-hidden{display:none}

/* ===== 政策发布 ===== */
.policy-list{display:flex;flex-direction:column;gap:24px;margin-top:20px}
.policy-card{
  position:relative;overflow:hidden;background:linear-gradient(135deg,#fffdf7 0%,#f7edd8 100%);
  border-radius:8px;padding:46px 32px;box-shadow:0 18px 45px rgba(43,77,43,.12);
  border:1px solid rgba(201,168,106,.48)
}
.policy-card::before,.policy-card::after{
  content:"";position:absolute;left:32px;right:32px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,168,106,.95),transparent)
}
.policy-card::before{top:24px}
.policy-card::after{bottom:24px}
.policy-simple{display:flex;align-items:center;justify-content:center;min-height:132px}
.policy-simple h3{
  font-size:clamp(17px,2vw,24px);color:var(--green);letter-spacing:2px;
  font-weight:700;text-shadow:none
}
/* ===== 合作咨询 ===== */
.coop-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.coop-card{background:var(--white);border-radius:16px;padding:30px;box-shadow:var(--shadow);border-top:5px solid var(--red);display:flex;flex-direction:column}
.coop-card h3{color:var(--green-deep);margin-bottom:16px;font-size:21px}
.coop-card .bullet{flex:1}
.coop-entry{display:inline-block;margin-top:18px;background:var(--green);color:#fff;font-weight:700;padding:11px 24px;border-radius:30px;font-size:14px;text-align:center}
.coop-entry:hover{background:var(--green-deep)}

/* ===== 联系我们 ===== */
.contact-section{
  min-height:610px;padding:88px 0 108px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.45),rgba(239,233,220,.3)),
    var(--paper)
}
.contact-section .container{max-width:1040px}
.contact-head{margin-bottom:30px}
.contact-head.reveal{opacity:1;transform:none}
.contact-panel{
  position:relative;display:grid;grid-template-columns:minmax(330px,1fr) minmax(390px,430px);
  align-items:center;gap:42px;width:100%;max-width:1040px;margin-top:0;padding:40px 48px;
  background:
    linear-gradient(135deg,rgba(255,255,255,.94),rgba(248,243,232,.96));
  border:1px solid rgba(201,168,106,.5);border-radius:8px;
  box-shadow:0 18px 44px rgba(43,77,43,.12)
}
.contact-panel::before{
  content:"";position:absolute;left:20px;top:18px;bottom:18px;width:4px;
  background:linear-gradient(180deg,var(--green),var(--gold));border-radius:4px
}
.contact-phone{display:flex;flex-direction:column;gap:8px}
.contact-phone span{color:var(--red);font-weight:700;font-size:21px;letter-spacing:2px}
.contact-phone span::after{content:"："}
.contact-phone .phone-number{
  width:max-content;font-size:clamp(32px,4.2vw,46px);font-family:"Noto Serif SC",serif;
  font-weight:900;color:var(--green-deep);letter-spacing:1px;line-height:1;
  border-bottom:4px solid var(--gold);padding-bottom:8px
}
.contact-code-wrap{
  position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding-left:34px;
  border-left:1px solid rgba(201,168,106,.48)
}
.contact-code-card{
  display:flex;flex-direction:column;align-items:center;gap:10px;min-width:0
}
.contact-code{
  display:block;width:min(112px,100%);height:auto;aspect-ratio:1;object-fit:contain;border-radius:6px;
  background:#fff;padding:8px;box-shadow:0 10px 26px rgba(43,77,43,.12)
}
.contact-code-card span{
  color:var(--green-deep);font-weight:700;font-size:13px;line-height:1.2;white-space:nowrap
}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--green-deep);color:rgba(255,255,255,.82);padding:54px 0 102px;
  border-top:1px solid rgba(201,168,106,.35)
}
.footer-inner{
  display:grid;grid-template-columns:minmax(310px,1fr) minmax(300px,.9fr) minmax(390px,1.1fr);
  gap:38px;align-items:start;padding-right:130px
}
.f-brand{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.footer-logo{width:132px;height:auto;display:block}
.f-brand strong{color:#fff;font-family:"Noto Serif SC",serif;font-size:20px;display:block}
.f-brand p,.f-contact p{font-size:13px;color:rgba(255,255,255,.72);margin-bottom:4px;line-height:1.65}
.f-brand p{max-width:310px}
.f-brand a,.f-contact a,.f-meta a{color:rgba(255,255,255,.86)}
.f-brand a:hover,.f-contact a:hover,.f-meta a:hover{color:var(--gold-soft)}
.f-address{margin-top:6px}
.f-foot-title{
  color:#fff;font-family:"Noto Serif SC",serif;font-size:17px;font-weight:700;
  margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid rgba(201,168,106,.28)
}
.f-meta{
  font-size:13px;text-align:left;line-height:1.8;justify-self:stretch;
  padding-left:28px;border-left:1px solid rgba(201,168,106,.22)
}
.f-meta p{margin-bottom:6px}
.f-copy{color:rgba(255,255,255,.5);font-size:12px}
.footer-divider{color:rgba(255,255,255,.32);margin:0 8px}

/* ===== 两个固定按钮 ===== */
.float-buttons{position:fixed;right:22px;bottom:26px;z-index:95;display:flex;flex-direction:column;gap:12px}
.float-buttons.is-hidden{display:none}
.float-btn{padding:13px 20px;border-radius:40px;font-weight:700;font-size:14px;text-align:center;box-shadow:0 8px 22px rgba(0,0,0,.22);transition:transform .2s}
.float-btn:hover{transform:translateY(-3px)}
.float-btn.shop{background:linear-gradient(135deg,var(--gold),var(--gold-soft));color:#3a2c10}
.float-btn.consult{background:var(--red);color:#fff}

/* ===== 移动端导航遮罩 ===== */
.nav-overlay{position:fixed;inset:0;background:rgba(20,30,20,.5);z-index:90;opacity:0;visibility:hidden;transition:.3s}

/* ===== 滚动出现动画 ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media(max-width:980px){
  .product-grid,.coop-grid{grid-template-columns:1fr}
  .brand-story{grid-template-columns:1fr}
  .story-brief{grid-template-columns:1fr;gap:22px;padding:26px}
  .story-brief h3{padding:0 0 18px}
  .story-brief h3::after{left:0;bottom:0}
  .story-brief .bullet{grid-template-columns:1fr;border-left:0;padding:0}
  .story-brief .bullet li+li{border-left:0;border-top:1px solid rgba(228,203,151,.24)}
  .value-grid{grid-template-columns:repeat(2,1fr)}
  .contact-panel{grid-template-columns:1fr;width:100%;padding:36px 32px;gap:30px}
  .contact-code-wrap{padding-left:0;border-left:0}
  .footer-inner{grid-template-columns:1fr 1fr;padding-right:120px;gap:28px}
  .f-brand{grid-column:1/-1}
  .f-meta{justify-self:stretch;border-left:0;padding-left:0}
}
@media(max-width:680px){
  .main-nav{
    position:fixed;top:68px;right:0;height:calc(100vh - 68px);width:70%;max-width:300px;
    background:var(--green-deep);flex-direction:column;padding:30px 24px;gap:6px;
    transform:translateX(100%);transition:transform .35s ease;z-index:95
  }
  .main-nav.open{transform:translateX(0)}
  .main-nav .nav-link{color:var(--paper);font-size:17px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav-toggle{display:block}
  .value-grid{grid-template-columns:1fr}
  .values{padding:24px 22px}
  .story-brief{padding:24px 22px}
  .story-brief h3{padding:0 0 18px;font-size:22px}
  .story-brief .bullet{padding:0}
  .lvtu-inner{flex-direction:column;text-align:center}
  .contact-section{min-height:auto;padding:58px 0 70px}
  .contact-panel{grid-template-columns:1fr;width:100%;padding:34px 24px;gap:28px;text-align:center}
  .contact-panel::before{left:18px;right:18px;top:16px;bottom:auto;width:auto;height:4px}
  .contact-phone{align-items:center}
  .contact-phone .phone-number{width:auto;font-size:clamp(28px,9vw,34px)}
  .contact-code-wrap{grid-template-columns:repeat(3,1fr);gap:10px;padding-left:0;border-left:0}
  .contact-code{width:clamp(78px,23vw,96px);height:clamp(78px,23vw,96px);margin:0 auto}
  .contact-code-card span{font-size:12px}
  .section{padding:64px 0}
  .site-footer{padding-bottom:190px}
  .footer-inner{grid-template-columns:1fr;padding-right:0;gap:22px}
  .f-brand{align-items:flex-start}
  .f-foot-title{margin-bottom:8px}
  .f-meta{text-align:left}
  .footer-divider{display:none}
  .f-copy a{display:block;margin-top:4px}
  .float-buttons{right:16px;bottom:18px;gap:10px}
  .float-btn{padding:11px 18px;font-size:13px}
}