:root{--wine:#782f40;--wine-deep:#5a1e2e;--wine-mid:#9b3d52;--wine-light:#c4687a;--wine-pale:#f5e8eb;--wine-ghost:#fbf3f5;--cream:#fdfaf8;--ink:#1c1018;--ink-mid:#3d2530;--sand:#e8d5b7;--muted:#8c6b74;--text-body:#4a3038;--white:#fff;--radius:12px;--shadow-sm:0 2px 12px rgba(120,47,64,.08);--shadow-md:0 8px 32px rgba(120,47,64,.14);--shadow-lg:0 20px 60px rgba(120,47,64,.18);--bg-hero:#fff;--bg-trust:var(--wine-pale);--bg-course:linear-gradient(160deg,#fdf6f7,#f8eef1);--bg-why:linear-gradient(160deg,#fff,#fdf4f6);--bg-teachers:linear-gradient(160deg,#fdf8fa,#f4ecf0);--bg-testi:linear-gradient(160deg,#fff,#fbf3f5);--bg-faq:linear-gradient(160deg,#fdf6f7,#f5e8eb);--card-bg:#fff;--card-border:rgba(120,47,64,.09);--body-bg:var(--cream);--nav-bg:var(--wine);--footer-bg:var(--ink)}body{background-color:var(--body-bg);color:var(--text-body);font-family:Microsoft YaHei,PingFang SC,Hiragino Sans GB,WenQuanYi Micro Hei,Helvetica Neue,Arial,sans-serif;margin:0;overflow-x:hidden;padding:0;transition:background .3s,color .3s}a{color:inherit;text-decoration:none}ul{list-style:none;margin:0;padding:0}.container{margin:0 auto;max-width:1200px;padding:0 20px}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.text-center{text-align:center}.mt-20{margin-top:20px}.mb-20{margin-bottom:20px}