/* Theme A: Professional Marine — ネイビー×ティール (Default) */
:root {
  --primary:       #1a4f7a;
  --primary-dark:  #0e3255;
  --primary-rgb:   26, 79, 122;
  --accent:        #00a88f;
  --accent-light:  #e6f7f5;
  --bg:            #ffffff;
  --bg-alt:        #f4f8fb;
  --text:          #1a2b3c;
  --text-light:    #5a6e7e;
  --border:        #d0dce8;
  --hero-gradient: linear-gradient(135deg, #0e3255 0%, #1a4f7a 55%, #00a88f 100%);
}