/* ============================================================
   新煜甄选 · B2B 礼品官网
   东方轻奢 / 简约高级 / 克制有温度
   ============================================================ */
:root{
  --gold:#B08D57;        /* 暖金：仅用于 CTA / 细线 / 图标 */
  --cream:#F6F1E7;       /* 米白：主背景 */
  --coffee:#8C7355;      /* 浅咖 */
  --ink:#2F2A24;         /* 深咖文字 */
  --gray-coffee:#D9CFC0; /* 浅灰咖 */
  --cinnabar:#8C2B22;    /* 朱砂红：主按钮/印章点缀（东方轻奢，非高饱和） */
  --cinnabar-d:#732115;
  --white:#FFFFFF;
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --maxw:1200px;
  --navh:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--cream);
  line-height:1.85;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
picture{display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

h1,h2,h3,h4{font-family:var(--serif);font-weight:600;color:var(--ink);line-height:1.4;letter-spacing:.02em}
.h1{font-size:clamp(28px,5vw,52px)}
.h2{font-size:clamp(24px,3.4vw,38px)}
.section{padding:clamp(64px,9vw,128px) 24px}
.container{max-width:var(--maxw);margin:0 auto}

/* 细金线 + 印章微元素（克制使用） */
.gold-line{height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);border:0;margin:28px auto;max-width:140px}
.seal{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border:1.5px solid var(--gold);border-radius:6px;
  color:var(--gold);font-family:var(--serif);font-size:13px;line-height:1.1;
  writing-mode:vertical-rl;text-align:center;letter-spacing:2px;
  opacity:.85;flex:none;
}
.eyebrow{font-family:var(--serif);color:var(--coffee);font-size:14px;letter-spacing:.32em;text-transform:none;display:inline-block;margin-bottom:14px}
.lead{color:var(--coffee);max-width:640px}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--navh);
  background:rgba(246,241,231,.86);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--gray-coffee);
  transition:transform .3s var(--ease);
}
.nav.hide{transform:translateY(-100%)}
.nav .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--serif);font-size:20px;font-weight:600;color:var(--ink)}
.brand img{height:48px;width:auto;background:none;border:0;padding:0}
.brand .logo-plate{display:flex;align-items:center;justify-content:center;background:none;padding:0}
.brand .sub{font-size:11px;letter-spacing:.28em;color:var(--coffee);font-family:var(--sans);display:block;margin-top:-2px}
.nav-links{display:flex;gap:34px;align-items:center}
.nav-links a{font-size:15px;color:var(--ink);position:relative;padding:6px 0;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--gold);transition:width .25s var(--ease)}
.nav-links a:hover,.nav-links a.active{color:var(--gold)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{background:var(--gold);color:var(--white)!important;padding:9px 20px!important;border-radius:2px;font-weight:500}
.nav-cta::after{display:none}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2px;background:var(--ink);transition:.3s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 移动端抽屉 */
.mobile-menu{position:fixed;inset:var(--navh) 0 0 0;background:var(--cream);z-index:999;
  display:none;flex-direction:column;padding:24px;gap:4px;transform:translateY(-12px);opacity:0;transition:.3s}
.mobile-menu.open{display:flex;transform:none;opacity:1}
.mobile-menu a{padding:16px 0;border-bottom:1px solid var(--gray-coffee);font-size:18px;font-family:var(--serif)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 30px;border-radius:2px;
  font-family:var(--sans);font-size:15px;font-weight:500;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s,color .2s;letter-spacing:.04em}
.btn-gold{background:var(--gold);color:var(--white)}
.btn-gold:hover{transform:scale(1.02);background:#a07f4b}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--coffee)}
.btn-ghost:hover{transform:scale(1.02);border-color:var(--gold);color:var(--gold)}
.btn-line{background:transparent;color:var(--gold);border-color:var(--gold);padding:10px 22px}
.btn-line:hover{transform:scale(1.02);background:var(--gold);color:var(--white)}
.btn-red{background:var(--cinnabar);color:#fff}
.btn-red:hover{transform:scale(1.02);background:var(--cinnabar-d)}

/* ---------- 首屏 ---------- */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;padding-top:var(--navh);overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;filter:saturate(.92)}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(246,241,231,.94) 0%,rgba(246,241,231,.78) 42%,rgba(246,241,231,.35) 100%)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;width:100%}
.hero h1{margin-bottom:22px}
.hero p.sub{font-size:18px;color:var(--coffee);max-width:520px;margin-bottom:34px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-visual{position:relative}
.hero-visual img{border:0}

/* 信任条 */
.trust{position:relative;z-index:2;background:rgba(255,255,255,.6);backdrop-filter:blur(6px);
  border-top:1px solid var(--gray-coffee);border-bottom:1px solid var(--gray-coffee)}
.trust .container{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:30px 24px}
.trust .item{text-align:center}
.trust .num{font-family:var(--serif);font-size:30px;color:var(--gold);font-weight:600}
.trust .label{font-size:13px;color:var(--coffee);margin-top:4px}

/* ---------- 通用标题块 ---------- */
.head{text-align:center;max-width:720px;margin:0 auto 56px}
.head .h2{margin-bottom:14px}

/* ---------- 卡片网格 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}

.card{background:var(--white);border:1px solid var(--gray-coffee);border-radius:3px;padding:34px 28px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);position:relative;overflow:hidden}
.card:hover{transform:scale(1.02);box-shadow:0 18px 40px -24px rgba(47,42,36,.4)}
.card .ico{width:44px;height:44px;color:var(--gold);margin-bottom:18px}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--coffee);font-size:14.5px}

/* 产品预览 */
.prod-card{position:relative;overflow:hidden;border-radius:3px;border:1px solid var(--gray-coffee);background:var(--white)}
.prod-card .ph{aspect-ratio:4/3;overflow:hidden}
.prod-card .ph picture{height:100%}
.prod-card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.prod-card:hover .ph img{transform:scale(1.04)}
.prod-card .body{padding:22px 24px}
.prod-card .tag{font-size:12px;letter-spacing:.18em;color:var(--gold);font-family:var(--serif)}
.prod-card h3{font-size:21px;margin:8px 0 8px}
.prod-card p{font-size:14px;color:var(--coffee)}
.prod-card .more{display:inline-block;margin-top:10px;color:var(--gold);font-size:14px;border-bottom:1px solid var(--gold);padding-bottom:2px}

/* ---------- 定制流程时间线 ---------- */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;position:relative}
.timeline::before{content:"";position:absolute;top:34px;left:8%;right:8%;height:1px;background:var(--gray-coffee)}
.step{text-align:center;position:relative;z-index:2}
.step .dot{width:46px;height:46px;margin:0 auto 18px;border-radius:50%;background:var(--white);
  border:1.5px solid var(--gold);display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);color:var(--gold);font-size:18px;font-weight:600}
.step h4{font-size:17px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--coffee);max-width:190px;margin:0 auto}

/* ---------- 案例 ---------- */
.case{background:var(--white);border:1px solid var(--gray-coffee);border-radius:3px;overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s}
.case:hover{transform:scale(1.02);box-shadow:0 18px 40px -24px rgba(47,42,36,.4)}
.case picture{aspect-ratio:3/2;overflow:hidden}
.case img{width:100%;height:100%;object-fit:cover;object-position:center}
.case .body{padding:26px 26px 30px}
.case h3{font-size:20px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.case .row{margin-bottom:12px}
.case .row .k{font-size:12px;letter-spacing:.14em;color:var(--gold);font-family:var(--serif);display:block;margin-bottom:2px}
.case .row .v{font-size:14px;color:var(--ink)}

/* ---------- 表单 ---------- */
.form-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info .item{display:flex;gap:14px;margin-bottom:22px;align-items:flex-start}
.contact-info .item .ico{width:24px;height:24px;color:var(--gold);flex:none;margin-top:4px}
.contact-info .item .t{font-family:var(--serif);font-size:16px}
.contact-info .item .d{font-size:14px;color:var(--coffee)}
.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:6px}
.mini{border:1px solid var(--gray-coffee);border-radius:3px;padding:14px 16px;background:#fff}
.mini .mk{display:block;font-family:var(--serif);font-size:15px;color:var(--ink)}
.mini .mv{display:block;font-size:12.5px;color:var(--coffee);margin-top:3px}
form.lead-form{background:var(--white);border:1px solid var(--gray-coffee);border-radius:3px;padding:34px 32px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;margin-bottom:7px;color:var(--ink)}
.field label .req{color:var(--gold)}
.field input,.field select,.field textarea{
  width:100%;padding:11px 14px;border:1px solid var(--gray-coffee);border-radius:2px;
  background:var(--cream);font-family:var(--sans);font-size:15px;color:var(--ink);transition:border .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--gold)}
.field textarea{resize:vertical;min-height:96px}
.field .err{color:#b4452f;font-size:12.5px;margin-top:5px;display:none}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#b4452f}
.field.invalid .err{display:block}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--coffee);margin-bottom:8px}
.check input{width:auto;margin-top:3px}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-success{display:none;background:#f0ece2;border:1px solid var(--gold);border-radius:3px;
  padding:20px 22px;color:var(--ink);margin-top:16px}
.form-success.show{display:block;animation:fadeIn .3s var(--ease)}

/* ---------- 页脚 ---------- */
.footer{background:#2F2A24;color:#cfc6b6;padding:64px 24px 28px}
.footer .container{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer h4{color:var(--cream);font-size:16px;margin-bottom:18px}
.footer a{color:#cfc6b6;font-size:14px;display:block;padding:5px 0;transition:color .2s}
.footer a:hover{color:var(--gold)}
.footer .brand{color:var(--cream);margin-bottom:14px}
.footer .desc{font-size:13.5px;line-height:1.9;color:#b3a994}
.footer .contact-line{font-size:13.5px;color:#b3a994;margin-bottom:8px}
.footer .bottom{border-top:1px solid #463f36;margin-top:44px;padding-top:22px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:#9a907e}

/* 眉标：两侧细金线（克制） */
.eyebrow-line{font-family:var(--serif);color:var(--coffee);font-size:14px;letter-spacing:.28em;
  display:inline-flex;align-items:center;gap:14px}
.eyebrow-line::before,.eyebrow-line::after{content:"";width:34px;height:1px;background:var(--gold);opacity:.75}
.eyebrow-line.light{color:#e7dcc6}
.eyebrow-line.light::before,.eyebrow-line.light::after{background:var(--gold);opacity:.55}

/* 首屏数据条 */
.hero-title .l2{display:block}
.hero-title em{font-style:normal;color:var(--cinnabar)}
.hero-stats{display:flex;gap:0;margin-top:40px;flex-wrap:wrap}
.hero-stats > div{padding:0 22px;position:relative}
.hero-stats > div:first-child{padding-left:0}
.hero-stats > div:not(:first-child)::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--gray-coffee)}
.hero-stats b{font-family:var(--serif);font-size:30px;color:var(--gold);font-weight:600;display:block;line-height:1.1}
.hero-stats span{font-size:13px;color:var(--coffee)}

/* 首屏主视觉：圆形印章徽章 + 嵌入小图 */
.hero-visual{position:relative}
.hero-visual > picture img{border-radius:4px;box-shadow:0 30px 70px -34px rgba(47,42,36,.5);border:1px solid var(--gray-coffee)}
.hero-badge{position:absolute;top:-22px;left:-22px;width:108px;height:108px;border-radius:50%;
  background:var(--cinnabar);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;box-shadow:0 14px 34px -14px rgba(140,43,34,.6);z-index:3;border:2px solid #fff}
.hero-badge .num{font-family:var(--serif);font-size:32px;font-weight:700;line-height:1}
.hero-badge .txt{font-size:12px;letter-spacing:.12em;margin-top:5px;line-height:1.35}
.hero-inset{position:absolute;right:-16px;bottom:-24px;width:152px;border-radius:4px;overflow:hidden;
  border:3px solid #fff;box-shadow:0 16px 40px -20px rgba(47,42,36,.5);z-index:3}
.hero-inset img{width:100%;height:100%;object-fit:cover}

/* 产品卡片价格/报价 */
.prod-card .price{display:block;margin-top:12px;font-family:var(--serif);color:var(--ink);font-size:15px}
.prod-card .price b{color:var(--cinnabar)}

/* 定制流程暗色带 */
.process-band{background:var(--ink);color:#e7dcc6;padding:clamp(64px,9vw,120px) 24px}
.process-band .h2{color:#f6f1e7}
.process-band .timeline{margin-top:6px}
.timeline.dark::before{background:rgba(176,141,87,.42)}
.process-band .step .dot{background:transparent;border-color:var(--gold);color:var(--gold);font-size:22px;width:52px;height:52px}
.process-band .step h4{color:#f6f1e7}
.process-band .step p{color:#cdbfa6}

/* ---------- 首屏礼盒墙（多盒并列） ---------- */
.hero-mosaic{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:9px;height:clamp(400px,46vw,540px);
  padding:9px;background:#fff;border:1px solid var(--gray-coffee);border-radius:4px;
  box-shadow:0 30px 70px -34px rgba(47,42,36,.45)}
.hero-mosaic .m{overflow:hidden;border-radius:2px;background:var(--cream);position:relative}
.hero-mosaic .m img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.hero-mosaic .m.wide img{object-position:32% 50%}
.hero-mosaic .m:hover img{transform:scale(1.04)}
.mosaic-note{margin-top:12px;font-size:12.5px;color:var(--coffee);text-align:right;letter-spacing:.04em}

/* ---------- 核心优势（图标方框版） ---------- */
.adv{background:#FDFBF5}
.eyebrow-en{display:block;font-family:var(--sans);font-size:12px;letter-spacing:.42em;color:var(--coffee);margin-bottom:16px;text-transform:uppercase}
.diamond{display:block;width:7px;height:7px;background:var(--gold);transform:rotate(45deg);margin:18px auto;opacity:.9}
.head-sub{font-size:14.5px;color:var(--coffee);letter-spacing:.04em;margin-top:2px}
.adv-card{background:#FBF7EE;border:1px solid #E7DDC9;border-radius:2px;padding:40px 28px 34px;text-align:center;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s}
.adv-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -28px rgba(47,42,36,.42);background:#fff}
.adv-ico{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;margin-bottom:20px;
  border:1px solid #DCCFB6;border-radius:2px;background:#fff;color:var(--cinnabar)}
.adv-ico svg{width:24px;height:24px}
.adv-card h3{font-size:19px;margin-bottom:10px}
.adv-card p{font-size:14px;color:var(--coffee);line-height:1.9}

/* ---------- 行业覆盖（带图标） ---------- */
.industries{background:var(--white);border-top:1px solid var(--gray-coffee);border-bottom:1px solid var(--gray-coffee);padding:44px 24px}
.industries .ind-head{display:flex;align-items:baseline;justify-content:center;gap:14px;flex-wrap:wrap;text-align:center}
.ind-num{font-family:var(--serif);font-size:38px;color:var(--gold);font-weight:600;line-height:1}
.ind-num em{font-style:normal;font-size:22px}
.ind-txt{font-size:14.5px;color:var(--coffee);letter-spacing:.06em}
.ind-list{display:grid;grid-template-columns:repeat(6,1fr);max-width:960px;margin:30px auto 0}
.ind-list li{display:flex;flex-direction:column;align-items:center;gap:10px;padding:0 6px;
  font-size:14px;color:var(--ink);letter-spacing:.08em;position:relative}
.ind-list li:not(:last-child)::after{content:"";position:absolute;right:0;top:8px;bottom:8px;width:1px;background:var(--gray-coffee)}
.ind-ico{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--gray-coffee);
  border-radius:50%;color:var(--gold);background:#FDFBF5}
.ind-ico svg{width:20px;height:20px}

/* ---------- 滚动淡入 ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .3s var(--ease),transform .3s var(--ease)}
.reveal.in{opacity:1;transform:none}

@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero .container{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:-1;max-width:520px}
  .hero-mosaic{height:clamp(320px,58vw,440px)}
  .ind-list{grid-template-columns:repeat(3,1fr);gap:26px 0}
  .ind-list li:nth-child(3n)::after{display:none}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:1fr;gap:0}
  .timeline::before{left:22px;top:8%;bottom:8%;width:1px;height:auto}
  .step{display:grid;grid-template-columns:46px 1fr;gap:18px;text-align:left;align-items:start;padding:14px 0}
  .step .dot{margin:0}
  .step p{max-width:none;margin:0}
  .form-wrap{grid-template-columns:1fr;gap:32px}
  .footer .container{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .hero{padding-left:20px;padding-right:20px}
  .nav .container{padding:0 18px}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .trust .container{grid-template-columns:repeat(2,1fr);gap:18px}
  .footer .container{grid-template-columns:1fr}
  .section{padding:56px 20px}
  .hero-stats > div{padding:0 14px}
  .hero-stats b{font-size:24px}
  .hero-badge{top:-14px;left:-8px;width:84px;height:84px}
  .hero-badge .num{font-size:24px}
  .hero-inset{display:none}
  .hero-mosaic{height:clamp(280px,72vw,360px);gap:8px}
  .mosaic-note{text-align:center;font-size:12px}
  .adv-card{padding:32px 22px 28px}
  .industries{padding:36px 20px}
  .ind-num{font-size:30px}
  .ind-list{gap:22px 0}
  .ind-ico{width:36px;height:36px}
  .ind-list li{font-size:13px}
  .brand img{height:42px}
}

/* 可访问性：减少动画 */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}