/* ============================================
   ee-binance.com — GradSchool Dark Navy + Gold
   ============================================ */
:root{
  --pri:#f5a623;--pri-dark:#e09510;--pri-light:rgba(245,166,35,.12);--pri-bg:#0f1726;
  --dark:#e8ecf2;--text:#8a9bb8;--text2:#5a6e8a;--bg:#1a2238;
  --card:#1f2a42;--card-border:#2a3654;--green:#10b981;--red:#ef4444;--orange:#f59e0b;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;color:var(--dark);background:var(--bg);line-height:1.7;font-size:16px}
a{color:var(--pri);text-decoration:none;transition:color .2s}
a:hover{color:var(--pri-dark)}
.container{max-width:1120px;margin:0 auto;padding:0 24px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:8px;cursor:pointer;border:2px solid transparent;transition:all .25s;font-size:15px;padding:12px 28px;text-decoration:none;line-height:1.4}
.btn--gold{background:var(--pri);color:#1a2238;border-color:var(--pri);box-shadow:0 4px 14px rgba(245,166,35,.3)}
.btn--gold:hover{background:var(--pri-dark);border-color:var(--pri-dark);color:#1a2238;transform:translateY(-1px)}
.btn--outline{background:transparent;color:var(--pri);border-color:var(--pri)}
.btn--outline:hover{background:var(--pri);color:#1a2238}
.btn--white{background:#fff;color:#1a2238;border-color:#fff}
.btn--white:hover{background:rgba(255,255,255,.85)}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.btn--outline-light:hover{background:rgba(255,255,255,.08);border-color:#fff;color:#fff}
.btn--dark{background:var(--card);color:var(--dark);border-color:var(--card-border)}
.btn--dark:hover{border-color:var(--pri);color:var(--pri)}
.btn--sm{padding:8px 20px;font-size:13px}
.btn--lg{padding:14px 32px;font-size:16px}
.btn--full{width:100%}

/* Section */
.sec{padding:80px 0}
.sec--alt{background:var(--pri-bg)}
.sec-badge{display:inline-block;color:var(--pri);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:2px;margin-bottom:8px}
.sec-title{font-size:30px;font-weight:800;color:var(--dark);margin-bottom:12px;line-height:1.3}
.sec-desc{font-size:15px;color:var(--text);max-width:520px;line-height:1.7}
.sec-center{text-align:center}
.sec-center .sec-desc{margin:0 auto}

/* ===== Header (dark transparent) ===== */
.hdr{position:sticky;top:0;z-index:100;background:rgba(26,34,56,.95);backdrop-filter:blur(12px);box-shadow:0 1px 0 rgba(255,255,255,.04);transition:box-shadow .3s}
.hdr.scrolled{box-shadow:0 2px 20px rgba(0,0,0,.3)}
.hdr__inner{display:flex;align-items:center;height:64px;gap:20px}
.hdr__brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px;color:#fff;flex-shrink:0}
.hdr__brand svg{width:28px;height:28px}
.hdr__nav{display:flex;gap:4px;margin-left:auto}
.hdr__nav a{font-size:14px;color:var(--text);font-weight:500;padding:8px 14px;border-radius:8px;transition:all .2s}
.hdr__nav a:hover{color:var(--pri);background:var(--pri-light)}
.lang-switch{display:flex;gap:3px}
.lang-switch a{font-size:11px;padding:3px 7px;border-radius:4px;color:var(--text2);font-weight:600;transition:all .15s}
.lang-switch a:hover,.lang-switch a.active{color:var(--pri);background:var(--pri-light)}
.hdr__cta{padding:8px 22px;background:var(--pri);color:#1a2238;border-radius:8px;font-size:13px;font-weight:700;white-space:nowrap;transition:all .2s;box-shadow:0 2px 8px rgba(245,166,35,.25)}
.hdr__cta:hover{background:var(--pri-dark);color:#1a2238}
.hdr__burger{display:none;background:none;border:none;color:#fff;cursor:pointer}
.hdr__burger svg{width:24px;height:24px}
@media(max-width:768px){.hdr__nav,.lang-switch{display:none}.hdr__burger{display:block}}

/* Mobile */
.mob{display:none;position:fixed;inset:0;background:rgba(15,23,38,.98);z-index:200;flex-direction:column;align-items:center;justify-content:center;gap:20px}
.mob--open{display:flex}
.mob__close{position:absolute;top:16px;right:16px;background:none;border:none;cursor:pointer;color:#fff}
.mob__close svg{width:28px;height:28px}
.mob a{font-size:1.1rem;color:var(--dark);font-weight:500}
.mob a:hover{color:var(--pri)}
.mob__lang{display:flex;gap:8px;margin-top:12px}
.mob__lang a{font-size:.85rem;padding:6px 12px;border-radius:4px;color:var(--text)}
.mob__lang a.on{background:var(--pri-light);color:var(--pri)}

/* ===== Hero (dark navy gradient with geometric shapes) ===== */
.hero{background:linear-gradient(135deg,#1a2238 0%,#243050 50%,#1a2238 100%);color:#fff;padding:80px 0 72px;position:relative;overflow:hidden;text-align:center}
.hero::before{content:'';position:absolute;top:-60px;left:-60px;width:240px;height:240px;border:2px solid rgba(245,166,35,.12);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-80px;right:-40px;width:300px;height:300px;border:2px solid rgba(245,166,35,.08);border-radius:50%}
.hero .container{position:relative;z-index:1}
.hero__badge{display:inline-block;background:rgba(245,166,35,.15);color:var(--pri);font-size:12px;font-weight:600;padding:6px 16px;border-radius:50px;margin-bottom:20px;border:1px solid rgba(245,166,35,.2)}
.hero__title{font-size:clamp(28px,5vw,48px);font-weight:800;line-height:1.15;margin-bottom:18px}
.hero__title span{color:var(--pri)}
.hero__desc{font-size:16px;color:var(--text);max-width:540px;margin:0 auto 32px;line-height:1.8}
.hero__btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ===== 3 Feature Cards (dark cards, gold icon, gold bottom border) ===== */
.feat3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:48px}
@media(max-width:768px){.feat3{grid-template-columns:1fr;gap:20px}}
.feat3__card{background:var(--card);border-radius:16px;padding:32px 28px;text-align:center;box-shadow:0 2px 20px rgba(0,0,0,.2);border-bottom:3px solid transparent;transition:all .3s;border:1px solid var(--card-border)}
.feat3__card:hover{border-bottom-color:var(--pri);box-shadow:0 8px 28px rgba(245,166,35,.1);transform:translateY(-4px)}
.feat3__icon{width:64px;height:64px;background:var(--pri-light);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 18px;color:var(--pri)}
.feat3__title{font-size:17px;font-weight:700;color:#fff;margin-bottom:8px}
.feat3__desc{font-size:14px;color:var(--text);line-height:1.7;margin-bottom:16px}
.feat3__link{font-size:13px;color:var(--pri);font-weight:600}
.feat3__card--link{display:block;text-decoration:none;cursor:pointer}

/* ===== Tab-like Course Selector ===== */
.tabs-wrap{margin-top:40px}
.tab-bar{display:flex;gap:0;justify-content:center;border-bottom:2px solid var(--card-border);margin-bottom:32px}
.tab-btn{background:none;border:none;color:var(--text);font-size:15px;font-weight:600;padding:14px 28px;cursor:pointer;position:relative;transition:all .2s}
.tab-btn::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:3px;background:transparent;border-radius:2px 2px 0 0;transition:background .2s}
.tab-btn:hover{color:var(--pri)}
.tab-btn.active{color:var(--pri)}
.tab-btn.active::after{background:var(--pri)}
@media(max-width:600px){.tab-btn{padding:10px 16px;font-size:13px}}
.tab-panel{display:none}
.tab-panel.active{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:768px){.tab-panel.active{grid-template-columns:1fr}}
.tab-card{background:var(--card);border-radius:14px;padding:24px;border:1px solid var(--card-border);transition:all .3s;display:flex;gap:16px;align-items:flex-start}
.tab-card:hover{border-color:var(--pri);box-shadow:0 4px 20px rgba(245,166,35,.08);transform:translateY(-2px)}
.tab-card__icon{width:48px;height:48px;min-width:48px;background:var(--pri-light);border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--pri)}
.tab-card__body{flex:1;min-width:0}
.tab-card__title{font-size:16px;font-weight:700;color:#fff;margin-bottom:4px}
.tab-card__desc{font-size:13px;color:var(--text);line-height:1.6}

/* ===== FAQ + About (dark theme) ===== */
.faq-about{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
@media(max-width:768px){.faq-about{grid-template-columns:1fr;gap:28px}}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--card);border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,.15);overflow:hidden;border:1px solid var(--card-border)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;padding:18px 22px;background:none;border:none;cursor:pointer;font-size:15px;font-weight:600;color:var(--dark);text-align:left;gap:12px}
.faq-q svg{flex-shrink:0;color:var(--pri);transition:transform .3s}
.faq-item.open .faq-q{color:var(--pri)}
.faq-item.open .faq-q svg{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:300px}
.faq-a p{padding:0 22px 18px;font-size:14px;color:var(--text);line-height:1.8}

/* ===== Features List (dark cards) ===== */
.feat-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:36px}
@media(max-width:768px){.feat-list{grid-template-columns:1fr}}
.feat-list__item{display:flex;gap:20px;background:var(--card);border-radius:16px;padding:28px;box-shadow:0 2px 16px rgba(0,0,0,.15);transition:all .3s;border:1px solid var(--card-border);align-items:flex-start}
.feat-list__item:hover{border-color:var(--pri);box-shadow:0 8px 28px rgba(245,166,35,.08);transform:translateY(-3px)}
.feat-list__icon{width:56px;height:56px;min-width:56px;background:var(--pri-light);border-radius:16px;display:flex;align-items:center;justify-content:center;color:var(--pri)}
.feat-list__body{flex:1;min-width:0}
.feat-list__badge{display:inline-block;background:var(--pri);color:#1a2238;font-size:11px;font-weight:700;padding:3px 10px;border-radius:6px;margin-bottom:8px}
.feat-list__title{font-size:17px;font-weight:700;color:#fff;margin-bottom:6px}
.feat-list__desc{font-size:14px;color:var(--text);line-height:1.7}
.feat-list__cat{font-size:12px;color:var(--pri);font-weight:600;white-space:nowrap;flex-shrink:0;background:var(--pri-light);padding:4px 12px;border-radius:20px;align-self:center}

/* ===== Stats Bar (gold numbers on dark) ===== */
.stats-bar{background:linear-gradient(135deg,#0f1726,#1a2238);padding:56px 0;border-top:1px solid var(--card-border);border-bottom:1px solid var(--card-border)}
.stats-bar__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
@media(max-width:600px){.stats-bar__grid{grid-template-columns:repeat(2,1fr);gap:20px}}
.stats-bar__num{font-size:42px;font-weight:800;line-height:1;color:var(--pri)}
.stats-bar__label{font-size:14px;color:var(--text);margin-top:6px}

/* ===== Steps ===== */
.steps-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:40px}
@media(max-width:900px){.steps-row{grid-template-columns:repeat(2,1fr)}}
@media(max-width:500px){.steps-row{grid-template-columns:1fr}}
.step-card{text-align:center;padding:28px 20px;background:var(--card);border-radius:14px;box-shadow:0 2px 16px rgba(0,0,0,.15);transition:all .3s;border:1px solid var(--card-border)}
.step-card:hover{box-shadow:0 8px 24px rgba(245,166,35,.08);transform:translateY(-3px);border-color:var(--pri)}
.step-card__num{width:44px;height:44px;background:var(--pri);color:#1a2238;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;margin:0 auto 14px;box-shadow:0 4px 12px rgba(245,166,35,.25)}
.step-card__title{font-size:16px;font-weight:700;color:#fff;margin-bottom:6px}
.step-card__desc{font-size:13px;color:var(--text);line-height:1.6}

/* ===== Contact Form Section ===== */
.contact-sec{padding:72px 0;background:var(--pri-bg)}
.contact-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
@media(max-width:768px){.contact-row{grid-template-columns:1fr;gap:28px}}
.contact-form{background:var(--card);border-radius:16px;padding:36px;border:1px solid var(--card-border)}
.contact-form h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;padding:12px 16px;background:var(--bg);border:1px solid var(--card-border);border-radius:8px;color:var(--dark);font-size:14px;font-family:inherit;transition:border-color .2s}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--pri)}
.form-group textarea{resize:vertical;min-height:100px}

/* ===== CTA Banner ===== */
.cta-sec{background:linear-gradient(135deg,#0f1726,#1a2238);padding:72px 0;border-top:1px solid var(--card-border)}
.cta-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
@media(max-width:768px){.cta-row{grid-template-columns:1fr;gap:28px}}
.cta-row__offer{display:inline-flex;align-items:center;gap:10px;background:var(--pri);color:#1a2238;padding:8px 16px;border-radius:10px;font-size:14px;font-weight:700;margin-bottom:16px}
.cta-row__offer span{font-size:24px;font-weight:800}
.cta-box{background:var(--card);border-radius:16px;padding:36px;box-shadow:0 4px 24px rgba(0,0,0,.2);text-align:center;border:1px solid var(--card-border)}
.cta-box h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:12px}
.cta-box p{font-size:14px;color:var(--text);margin-bottom:20px;line-height:1.7}

/* ===== Footer (darker navy) ===== */
.ftr{background:#0d1520;color:#5a6e8a;padding:48px 0 24px}
.ftr__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
@media(max-width:768px){.ftr__grid{grid-template-columns:1fr 1fr;gap:24px}}
@media(max-width:480px){.ftr__grid{grid-template-columns:1fr}}
.ftr__brand{font-size:18px;font-weight:800;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.ftr__brand svg{width:24px;height:24px}
.ftr__desc{font-size:13px;line-height:1.7;color:#4a5e7a}
.ftr__col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.ftr__col ul{list-style:none}
.ftr__col li{margin-bottom:8px}
.ftr__col a{color:#4a5e7a;font-size:13px;transition:color .2s}
.ftr__col a:hover{color:var(--pri)}
.ftr__lang{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.ftr__lang a{display:inline-block;padding:4px 10px;font-size:12px;color:#4a5e7a;border:1px solid #1e2d44;border-radius:6px;transition:all .2s}
.ftr__lang a:hover,.ftr__lang a.active{color:var(--pri);border-color:var(--pri);background:rgba(245,166,35,.08)}
.ftr__bottom{border-top:1px solid #1e2d44;padding-top:20px;font-size:12px;color:#3a4e6a}
.ftr__risk{margin-bottom:8px;line-height:1.7}
.ftr__risk strong{color:#5a6e8a}

/* Download page */
.dl-hero{background:linear-gradient(135deg,#1a2238,#243050);color:#fff;padding:56px 0;text-align:center;position:relative;overflow:hidden}
.dl-hero::before{content:'';position:absolute;top:-30px;right:-30px;width:150px;height:150px;border:2px solid rgba(245,166,35,.1);border-radius:50%}
.dl-hero h1{font-size:2rem;font-weight:800;margin-bottom:12px}
.dl-hero p{font-size:1rem;color:var(--text);max-width:480px;margin:0 auto}
.dl-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-card{background:var(--card);border-radius:14px;padding:28px;text-align:center;box-shadow:0 2px 16px rgba(0,0,0,.15);border-bottom:3px solid transparent;transition:all .3s;border:1px solid var(--card-border)}
.dl-card:hover{border-bottom-color:var(--pri);box-shadow:0 8px 24px rgba(245,166,35,.08)}
.dl-badge{display:inline-block;color:#1a2238;font-size:.75rem;font-weight:700;padding:4px 14px;border-radius:20px;margin-bottom:16px;letter-spacing:1px}
.dl-card h2{font-size:1.1rem;font-weight:700;color:#fff;margin-bottom:14px}
.dl-card ul{list-style:none;text-align:left;margin-bottom:20px;padding:0}
.dl-card li{padding:6px 0;font-size:.88rem;color:var(--text);border-bottom:1px solid var(--card-border)}
.dl-card li:last-child{border-bottom:none}
@media(max-width:768px){.dl-grid3{grid-template-columns:1fr}}

/* Page */
.page-content{padding:48px 0 60px}
.page-content h1{font-size:28px;font-weight:800;margin-bottom:20px;color:#fff}
.page-content h2{font-size:20px;font-weight:700;margin:28px 0 12px;color:#fff}
.page-content p{color:var(--text);line-height:1.85;margin-bottom:14px}

/* Back to top */
.back-top{position:fixed;bottom:24px;right:24px;width:40px;height:40px;background:var(--pri);color:#1a2238;border:none;border-radius:50%;cursor:pointer;opacity:0;transform:translateY(10px);transition:all .3s;box-shadow:0 2px 10px rgba(245,166,35,.3);z-index:50;display:flex;align-items:center;justify-content:center}
.back-top--show{opacity:1;transform:translateY(0)}
.back-top svg{width:20px;height:20px}