/* VocabMaster Article Shared Styles */
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700;800&family=DM+Sans:ital,wght@0,400;0,500;1,400&display=swap');

:root {
  --navy:#0f1e3d; --navy2:#1a2f5a; --yellow:#f5c518; --yellow2:#ffd84d;
  --white:#ffffff; --light:#f4f6fb; --gray:#e8ecf5; --muted:#6b7399; --text:#1a1d2e;
  --radius:16px; --shadow:0 8px 40px rgba(15,30,61,.13); --trans:0.35s cubic-bezier(.4,0,.2,1);
}
.dark-mode {
  --white:#111827; --light:#1f2a40; --gray:#2a3752; --text:#e8eaf2; --muted:#8b9ab8;
  --navy:#0d1726; --navy2:#162035;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;font-size:16px;}
body{font-family:'DM Sans',sans-serif;background:var(--white);color:var(--text);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased;transition:background .4s,color .4s;}
h1,h2,h3,h4{font-family:'Sora',sans-serif;line-height:1.2;}
a{color:inherit;text-decoration:none;}

.reveal{opacity:0;transform:translateY(36px);transition:opacity .7s ease,transform .7s ease;}
.reveal.visible{opacity:1;transform:translateY(0);}

.topbar{background:var(--navy);color:rgba(255,255,255,.7);font-size:.82rem;padding:8px 24px;display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;}
.topbar a{color:var(--yellow);}

nav{position:sticky;top:0;z-index:200;background:var(--white);border-bottom:2px solid var(--gray);box-shadow:0 2px 16px rgba(15,30,61,.07);}
.nav-inner{max-width:1140px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:14px 24px;gap:16px;}
.nav-logo{display:flex;align-items:center;gap:10px;font-family:'Sora',sans-serif;font-weight:800;font-size:1.35rem;color:var(--navy);}
.nav-logo .logo-box{width:40px;height:40px;border-radius:10px;background:var(--navy);display:flex;align-items:center;justify-content:center;color:var(--yellow);font-size:1.2rem;font-weight:800;}
.theme-toggle{width:48px;height:26px;background:var(--navy);border-radius:26px;cursor:pointer;border:none;position:relative;flex-shrink:0;}
.theme-toggle .dot{position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:var(--yellow);transition:all .3s;display:flex;align-items:center;justify-content:center;font-size:11px;}
.dark-mode .theme-toggle .dot{left:25px;}

.article-hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 100%);padding:64px 24px;color:#fff;}
.article-hero-inner{max-width:800px;margin:0 auto;}
.article-label{display:inline-flex;align-items:center;gap:8px;background:rgba(245,197,24,.15);border:1px solid rgba(245,197,24,.35);color:var(--yellow);padding:5px 14px;border-radius:30px;font-size:.8rem;font-weight:700;margin-bottom:18px;letter-spacing:.5px;}
.article-hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;margin-bottom:14px;}
.article-hero p{color:rgba(255,255,255,.75);font-size:1.05rem;max-width:600px;}

.article-body{max-width:800px;margin:0 auto;padding:56px 24px;}
.article-body h2{font-size:1.5rem;color:var(--navy);margin:36px 0 14px;}
.article-body h3{font-size:1.15rem;color:var(--navy);margin:24px 0 10px;}
.article-body p{color:var(--muted);margin-bottom:18px;line-height:1.8;font-size:1.02rem;}
.article-body p strong{color:var(--text);}
.article-body ul,ol{padding-left:22px;margin-bottom:18px;}
.article-body li{color:var(--muted);margin-bottom:8px;line-height:1.7;}

.article-links{background:var(--light);border:2px solid var(--gray);border-radius:var(--radius);padding:24px;margin:40px 0;}
.article-links h4{font-family:'Sora',sans-serif;color:var(--navy);margin-bottom:14px;font-size:1rem;}
.article-links ul{list-style:none;padding:0;display:grid;gap:8px;}
.article-links a{color:var(--navy);font-weight:600;font-size:.93rem;display:flex;align-items:center;gap:6px;}
.article-links a:hover{color:var(--yellow);}

.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:var(--radius);font-family:'Sora',sans-serif;font-weight:700;font-size:.95rem;cursor:pointer;border:none;transition:var(--trans);}
.btn-primary{background:var(--yellow);color:var(--navy);}
.btn-primary:hover{background:var(--yellow2);transform:translateY(-2px);}
.btn-outline{background:transparent;border:2px solid var(--gray);color:var(--text);}
.btn-outline:hover{border-color:var(--navy);}

footer{background:var(--navy);color:rgba(255,255,255,.6);padding:36px 24px;text-align:center;font-size:.85rem;margin-top:0;}
footer a{color:var(--yellow);}
footer a:hover{text-decoration:underline;}