:root{
    /* 更淡更柔和的绿色与整体对比度 */
    --brand:#BFE6B8;        /* 主绿更浅 */
    --brand-2:#D6F0D0;      /* 辅助浅绿 */
    --bg:#FAFBFC;           /* 背景更亮更淡 */
    --white:#FFFFFF;
    --line:#EEF1F4;         /* 分隔线更浅 */
    --text:#2f2f2f;
    --text-light:#7a7a7a;
}
html,body{background:var(--bg);color:var(--text);font-family:-apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC',sans-serif;}
.simple-bg{position:fixed;inset:0;background:radial-gradient(1200px 600px at 20% 0%, rgba(191,230,184,.06), transparent), radial-gradient(1000px 500px at 80% 20%, rgba(214,240,208,.06), transparent);} 

/* 顶部导航与容器布局 */
.topbar{position:sticky; top:0; z-index:1000; background:#fff; border-bottom:1px solid var(--line);}
.topbar-inner{max-width:1280px; margin:0 auto; padding:12px 24px; display:flex; align-items:center; justify-content:space-between; gap:20px}
.brand{display:flex; align-items:baseline; gap:10px}
.brand-link{font-weight:700; color:#2b2b2b; text-decoration:none}
.brand-sub{color:var(--text-light); font-size:14px}
.topnav{display:flex; gap:14px}
.topnav a{padding:8px 10px; color:#37474f; text-decoration:none; border-radius:8px}
.topnav a.active, .topnav a:hover{background:rgba(191,230,184,.28); color:#2d4c23}
.topbar-actions .btn-sm{padding:8px 14px; font-size:14px}

.container{max-width:1280px; margin:0 auto; padding:20px 24px}

/* Hero */
.hero-simple{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;min-height:70vh}
.hero-simple img{width:100%;max-height:520px;object-fit:contain;border-radius:16px;box-shadow:0 10px 30px rgba(0,0,0,.08)}
.hero-content h1{font-size:48px;margin-bottom:10px}
.hero-content .subtitle{color:var(--text-light)}

/* 首页：统一标题与分区间距 */
.content-section{margin:56px 0}
.section-title{font-size:24px;text-align:center;margin-bottom:18px;color:#2f2f2f}
.section-intro{max-width:820px;margin:0 auto;text-align:center;color:var(--text-light);line-height:1.8}

/* 首页：并排栅格（封面 + 公司卡片） */
.home-grid{display:grid;grid-template-columns:1fr 420px;gap:24px;align-items:start}
.home-aside{position:sticky;top:88px}
.home-aside .company-card{margin-top:0}

/* 去除可能的旧蒙层影响（若存在旧类） */
.hero-banner::before{content:none !important}

/* 卡片与按钮 */
.btn{display:inline-block;padding:12px 28px;border-radius:9999px;background:#f1fbf2;color:#2d4c23;text-decoration:none;transition:.2s ease;border:1px solid var(--line)}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--brand);color:#1f3a19}
.btn-primary:hover{filter:brightness(1.03)}

.cover-card, .company-card, .reader-card{background:var(--white);border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 20px rgba(0,0,0,.04);padding:24px;margin:0 auto;max-width:1100px}
.cover-card img{width:100%;height:auto;object-fit:contain;border-radius:12px}
.company-card{margin-top:40px;text-align:center}

/* 阅读器布局 */
.reader{max-width:1100px;margin:0 auto}
.reader-controls{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:20px 0}
.reader-controls .left,
.reader-controls .right{display:flex;gap:8px;align-items:center}
.reader-img{width:100%;background:var(--white);border:1px solid var(--line);border-radius:16px;padding:12px;box-shadow:0 10px 30px rgba(0,0,0,.05)}
.reader-img img{width:100%;height:auto;object-fit:contain;border-radius:12px}

/* 页脚固定风格 */
.footer-simple{border-top:1px solid var(--line);background:#fff}
.footer-inner{max-width:1280px;margin:0 auto;padding:18px 24px;display:flex;justify-content:space-between;gap:20px;color:var(--text-light)}
.footer-inner a{color:inherit}