/* ============================================
   泰安高新区奥迪姆文化传媒服务工作室 官网样式
   零依赖 · 深栗棕鎏金 · 同款牛人会框架
   ============================================ */
:root{
  --brand:#5b2d1c;        /* 主色 深栗棕 */
  --brand2:#8a4a2b;       /* 辅色 暖红棕 */
  --brand3:#f7efe6;       /* 浅米底 */
  --gold:#b98a2f;         /* 点缀 鎏金 */
  --gold2:#d4af37;
  --ink:#33261f;          /* 正文 */
  --ink2:#7a6a5e;         /* 次要文字 */
  --bg:#fdfaf5;           /* 页面底 */
  --card:#ffffff;
  --line:#ece0d2;         /* 分割线 */
  --dark:#3a1e10;         /* 深色区 */
  --shadow:0 10px 30px rgba(91,45,28,.10);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:15px;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section-title{text-align:center;margin-bottom:48px}
.section-title .eyebrow{
  display:inline-block;color:var(--gold);letter-spacing:4px;font-size:13px;
  margin-bottom:10px;font-weight:600;
}
.section-title h2{font-size:32px;color:var(--brand);letter-spacing:2px;font-weight:700}
.section-title p{color:var(--ink2);margin-top:10px;font-size:15px}
.section-title .line{
  width:56px;height:3px;background:linear-gradient(90deg,var(--gold),var(--gold2));
  margin:16px auto 0;border-radius:2px;
}
/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  box-shadow:0 2px 14px rgba(0,0,0,.06);border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:12px}
.logo .mark{
  width:42px;height:42px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand2));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:22px;box-shadow:0 4px 12px rgba(91,45,28,.3);
}
.logo b{font-size:19px;color:var(--brand);letter-spacing:1px;display:block;line-height:1.2}
.logo span{font-size:11px;color:var(--ink2);letter-spacing:2px}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{
  padding:8px 14px;border-radius:8px;font-size:15px;color:var(--ink);
  transition:.2s;
}
.nav-links a:hover{color:var(--brand2);background:var(--brand3)}
.nav-links a.active{color:var(--brand2);background:var(--brand3);font-weight:600}
.nav .tel{
  display:flex;align-items:center;gap:8px;color:var(--brand);font-weight:700;font-size:16px;
  margin-left:14px;
}
.nav .tel i{font-style:normal;font-size:18px}
/* ---------- Banner ---------- */
.banner{
  position:relative;padding:170px 0 130px;margin-top:70px;overflow:hidden;
  background:
    radial-gradient(ellipse 60% 55% at 78% 22%, rgba(212,175,55,.16), transparent 60%),
    linear-gradient(160deg,#3a1e10 0%, #5b2d1c 45%, #8a4a2b 100%);
}
.banner::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:90px;opacity:.5;
  background:linear-gradient(120deg,transparent 60%,rgba(255,255,255,.14) 62%,transparent 66%);
  background-size:340px 100%;border-radius:50% 50% 0 0;
}
.banner .wrap{position:relative;z-index:2;display:flex;justify-content:space-between;gap:40px;align-items:center}
.banner-text{max-width:640px}
.banner-text .tag{
  display:inline-block;color:var(--gold2);border:1px solid rgba(212,175,55,.5);
  padding:5px 16px;border-radius:30px;font-size:13px;letter-spacing:3px;margin-bottom:22px;
}
.banner-text h1{font-size:44px;color:#fff;letter-spacing:3px;line-height:1.35;font-weight:800}
.banner-text h1 em{font-style:normal;color:var(--gold2)}
.banner-text p{color:#e8d5c5;margin:20px 0 30px;font-size:16px;max-width:560px}
.banner-btns{display:flex;gap:16px}
.btn{
  display:inline-block;padding:12px 30px;border-radius:30px;font-size:15px;font-weight:600;
  transition:.25s;cursor:pointer;border:1px solid transparent;
}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#fff;box-shadow:0 6px 18px rgba(185,138,47,.35)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(185,138,47,.45)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.banner-card{
  width:330px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius);padding:26px 24px;backdrop-filter:blur(6px);
}
.banner-card h4{color:#fff;font-size:17px;letter-spacing:1px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.banner-card ul{list-style:none}
.banner-card li{
  color:#ecdbca;font-size:14px;padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.15);
  display:flex;justify-content:space-between;align-items:center;
}
.banner-card li:last-child{border-bottom:none}
.banner-card li b{color:var(--gold2);font-weight:600}
/* ---------- 通用板块 ---------- */
.grid{display:grid;gap:24px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;transition:.25s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#e3cdb4}
.card .ic{
  width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:26px;margin-bottom:16px;background:var(--brand3);
}
.card h3{font-size:18px;color:var(--brand);margin-bottom:10px;letter-spacing:1px}
.card p{font-size:14px;color:var(--ink2)}
.card .more{display:inline-block;margin-top:14px;font-size:13px;color:var(--gold);font-weight:600}
.card .more:hover{color:var(--brand2)}
/* 数字栏 */
.stats{
  background:linear-gradient(135deg,var(--dark),var(--brand));border-radius:var(--radius);
  padding:44px 20px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;
}
.stats .num{font-size:36px;font-weight:800;color:var(--gold2);letter-spacing:1px}
.stats .lab{color:#e8d5c5;font-size:14px;margin-top:6px;letter-spacing:2px}
/* 双栏介绍 */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.duo .art{
  border-radius:var(--radius);overflow:hidden;position:relative;min-height:340px;
  background:linear-gradient(150deg,#5b2d1c,#8a4a2b 55%,#a9633c);
  display:flex;align-items:center;justify-content:center;
}
.duo .art .big{font-size:110px;opacity:.9;filter:drop-shadow(0 10px 20px rgba(0,0,0,.2))}
.duo h3{font-size:26px;color:var(--brand);margin-bottom:18px;letter-spacing:2px;line-height:1.4}
.duo p{color:var(--ink2);margin-bottom:14px}
.duo ul{list-style:none;margin-top:8px}
.duo ul li{padding:6px 0 6px 26px;position:relative;color:var(--ink)}
.duo ul li::before{
  content:"✓";position:absolute;left:0;top:6px;color:var(--brand2);font-weight:700;
}
/* 经营范围 tag */
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags span{
  background:var(--brand3);color:var(--brand);border-radius:20px;padding:6px 16px;
  font-size:13px;border:1px solid #ecdcc9;
}
/* 页脚 */
.footer{background:var(--dark);color:#cbb8a6;margin-top:20px}
.footer .wrap{padding:56px 20px 30px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.footer h5{color:#fff;font-size:16px;margin-bottom:16px;letter-spacing:2px}
.footer p{font-size:13px;line-height:2}
.footer a{font-size:13px;display:block;padding:3px 0}
.footer a:hover{color:var(--gold2)}
.footer .copy{
  text-align:center;padding:18px;border-top:1px solid rgba(255,255,255,.08);
  font-size:12px;color:#8f7a68;
}
/* 内页 banner */
.page-banner{
  margin-top:70px;padding:90px 0;text-align:center;color:#fff;
  background:linear-gradient(160deg,#3a1e10,#5b2d1c 55%,#8a4a2b);
}
.page-banner h1{font-size:34px;letter-spacing:4px;font-weight:800}
.page-banner .crumb{margin-top:12px;font-size:13px;color:#dcc4ae;letter-spacing:2px}
.page-banner .crumb a:hover{color:var(--gold2)}
/* 面包屑 */
.crumbs{font-size:13px;color:var(--ink2);padding:26px 0 0}
.crumbs a{color:var(--brand2)}
.crumbs a:hover{color:var(--gold)}
/* 分页脚回到顶部 */
.top-btn{
  position:fixed;right:24px;bottom:30px;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:20px;box-shadow:0 6px 16px rgba(91,45,28,.3);cursor:pointer;opacity:0;transition:.3s;z-index:90;
}
.top-btn.show{opacity:1}
.top-btn:hover{background:var(--brand2)}
/* 联系页 */
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;margin-top:8px}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.contact-card h3{color:var(--brand);font-size:19px;margin-bottom:20px;letter-spacing:1px}
.contact-card .row{display:flex;gap:14px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:15px}
.contact-card .row:last-child{border:none}
.contact-card .row .k{color:var(--gold);font-weight:700;min-width:84px;letter-spacing:2px}
.contact-card .row .v{color:var(--ink)}
/* 响应式 */
@media(max-width:900px){
  .g3,.g4,.g2{grid-template-columns:1fr}
  .duo{grid-template-columns:1fr}
  .banner .wrap{flex-direction:column}
  .banner-text h1{font-size:32px}
  .banner-card{width:100%}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer .wrap{grid-template-columns:1fr}
  .nav-links{display:none}
  .nav .tel{margin-left:0}
  .contact-grid{grid-template-columns:1fr}
  .section{padding:52px 0}
}

/* ---------- 奥迪姆·伴读 H5 活动专页入口 ---------- */
.bandu-box{
  position:relative;border-radius:26px;padding:52px 46px 46px;overflow:hidden;
  background:linear-gradient(150deg,#2a1c10 0%,#4a3217 60%,#6b4a20 100%);
  box-shadow:0 22px 46px rgba(42,28,16,.28);
  border:1px solid rgba(201,161,90,.45);
}
.bandu-box::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(201,161,90,.14) 1px,transparent 1px);background-size:24px 24px;opacity:.5;pointer-events:none}
.bandu-head{position:relative;text-align:center;color:#fff}
.bandu-head .eyebrow{color:var(--gold2);letter-spacing:6px;font-size:13px;font-weight:600}
.bandu-head h2{font-size:34px;letter-spacing:10px;margin:14px 0 10px;font-weight:800;text-indent:10px}
.bandu-head p{color:#dcc4ae;font-size:14px;letter-spacing:1px}
.bandu-head::after{content:"";display:block;width:70px;height:2px;margin:20px auto 0;background:linear-gradient(90deg,transparent,var(--gold2),transparent)}
.bandu-cards{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:34px}
.bandu-card{
  display:block;background:rgba(250,245,236,.97);border:1px solid rgba(201,161,90,.55);
  border-radius:18px;padding:26px 26px 22px;text-decoration:none;transition:.28s;
  box-shadow:0 10px 22px rgba(0,0,0,.16);
}
.bandu-card:hover{transform:translateY(-5px);box-shadow:0 18px 34px rgba(0,0,0,.28);border-color:var(--gold2)}
.bandu-card .bc-tag{display:inline-block;padding:3px 12px;border-radius:999px;font-size:11px;letter-spacing:2px;color:#fff;background:linear-gradient(120deg,#b98a2f,#d4af37);margin-bottom:14px}
.bandu-card h3{font-size:19px;font-weight:800;color:var(--brand);letter-spacing:1px;margin-bottom:8px}
.bandu-card p{font-size:13.5px;color:var(--ink2);line-height:1.7;margin-bottom:14px}
.bandu-card b{font-size:14px;color:var(--gold);letter-spacing:1px;font-weight:700}
.bandu-card:hover b{color:var(--brand2)}
@media(max-width:900px){
  .bandu-box{padding:38px 20px 28px;border-radius:18px}
  .bandu-head h2{font-size:26px;letter-spacing:6px;text-indent:6px}
  .bandu-cards{grid-template-columns:1fr;gap:16px;margin-top:24px}
  .bandu-card{padding:22px 18px 18px}
}