/*
Theme Name: OK CERTIFIED THEME
Author: OK Labs
Version: 2.0.0
*/

:root {
  --ok-green: #00c853;
  --ok-dark: #2d3436;
  --ok-gray: #f5f6fa;
  --ok-border: #e1e1e1;
  --ok-shadow: 0 4px 20px rgba(0, 200, 83, 0.15);
  --header-height: 80px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Pretendard', -apple-system, sans-serif;
  background: #ffffff;
  color: #333;
  line-height: 1.8;
  overflow-x: hidden;
  padding-top: var(--header-height);
  word-break: keep-all;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }

.ok_header {
  position: fixed; top: 0; width: 100%; height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--ok-border);
  backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5%; z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.03);
}

.ok_logo {
  font-size: 24px; font-weight: 900; color: var(--ok-dark); letter-spacing: -1px;
  display: flex; align-items: center; gap: 8px;
}

.ok_badge {
  background: var(--ok-green); color: #fff; font-size: 11px; 
  padding: 4px 8px; border-radius: 4px; font-weight: 700;
  vertical-align: middle;
}

.ok_nav_desktop { display: flex; gap: 30px; }
.ok_nav_desktop a { font-weight: 600; color: #555; font-size: 15px; }
.ok_nav_desktop a:hover { color: var(--ok-green); }

.ok_mobile_toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.ok_mobile_toggle span { width: 25px; height: 3px; background: var(--ok-dark); border-radius: 2px; }

.ok_mobile_menu {
  position: fixed; top: var(--header-height); left: 0; width: 100%; height: 0;
  background: #fff; overflow: hidden; transition: 0.3s; z-index: 999;
  border-bottom: 1px solid var(--ok-border);
}
.ok_mobile_menu.active { height: auto; padding: 20px 0; box-shadow: 0 10px 20px rgba(0,0,0,0.05); }
.ok_mobile_link { display: block; padding: 15px 5%; font-size: 18px; font-weight: 700; color: var(--ok-dark); border-bottom: 1px solid #f1f1f1; }

.ok_hero {
  padding: 120px 20px 100px; text-align: center; background: var(--ok-gray);
  position: relative; overflow: hidden;
}
.ok_hero h1 { font-size: 48px; font-weight: 800; color: var(--ok-dark); margin-bottom: 20px; letter-spacing: -1.5px; line-height: 1.2; }
.ok_hero p { font-size: 18px; color: #666; margin-bottom: 40px; max-width: 800px; margin-left: auto; margin-right: auto; }

.ok_btn {
  background: var(--ok-green); color: #fff; padding: 18px 45px; 
  border-radius: 50px; font-weight: 700; font-size: 18px; 
  display: inline-block; transition: 0.3s; box-shadow: var(--ok-shadow);
  border: none; cursor: pointer;
}
.ok_btn:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(0, 200, 83, 0.3); }

.ok_grid {
  max-width: 1200px; margin: -60px auto 100px; padding: 0 20px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; position: relative; z-index: 10;
}

.ok_card {
  background: #fff; padding: 40px; border-radius: 16px;
  border: 1px solid var(--ok-border); text-align: left;
  transition: 0.3s; box-shadow: 0 10px 30px rgba(0,0,0,0.03);
}
.ok_card:hover { border-color: var(--ok-green); transform: translateY(-5px); box-shadow: 0 15px 40px rgba(0, 200, 83, 0.1); }
.ok_icon { font-size: 32px; margin-bottom: 20px; display: block; }
.ok_card h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; color: var(--ok-dark); }
.ok_card p { font-size: 16px; color: #666; }

.ok_content { max-width: 960px; margin: 0 auto 120px; padding: 0 20px; }
.ok_article h2 { 
  font-size: 30px; border-left: 6px solid var(--ok-green); 
  padding-left: 20px; margin: 70px 0 30px; color: var(--ok-dark); line-height: 1.4;
}
.ok_article p { font-size: 17px; color: #444; margin-bottom: 25px; text-align: justify; letter-spacing: -0.02em; }

.ok_table_box { 
  width: 100%; border-collapse: collapse; margin: 40px 0; 
  background: #fff; border: 1px solid #eee; border-radius: 12px; overflow: hidden;
}
.ok_table_box th { background: #f8f9fa; padding: 15px; font-weight: 700; border-bottom: 2px solid #eee; text-align: left; color: #333; }
.ok_table_box td { padding: 15px; border-bottom: 1px solid #eee; color: #555; }

.ok_footer { background: var(--ok-dark); color: #fff; padding: 80px 20px; text-align: center; font-size: 14px; }
.ok_footer a { color: #aaa; margin: 0 12px; font-weight: 500; }

@media (max-width: 900px) {
  .ok_hero h1 { font-size: 34px; }
  .ok_grid { grid-template-columns: 1fr; margin-top: 40px; }
  .ok_nav_desktop { display: none; }
  .ok_mobile_toggle { display: flex; }
  .ok_card { padding: 30px; }
}