/* =============================================
   English Corner Homepage — Design System
   ============================================= */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --brand:#1a56db;--brand-light:#e8effc;--brand-dark:#0f3a94;
  --accent:#f59e0b;--accent-light:#fef3c7;
  --txt:#111827;--txt2:#4b5563;--muted:#9ca3af;
  --white:#fff;--light:#f9fafb;--subtle:#f3f4f6;
  --brd:#e5e7eb;--brd2:#d1d5db;
  --sh-s:0 1px 2px rgba(0,0,0,.05);
  --sh-m:0 4px 6px -1px rgba(0,0,0,.07),0 2px 4px -2px rgba(0,0,0,.05);
  --sh-l:0 10px 25px -3px rgba(0,0,0,.08),0 4px 6px -4px rgba(0,0,0,.04);
  --r-s:6px;--r-m:10px;--r-l:16px;--r-xl:24px;
  --font:'Inter','Noto Sans TC',-apple-system,BlinkMacSystemFont,sans-serif;
  --ease:.25s cubic-bezier(.4,0,.2,1)
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--txt);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-dark)}

/* === NETWORK BAR === */
.nb{background:var(--txt);color:#d1d5db;font-size:.75rem;padding:6px 0;letter-spacing:.02em}
.nb__in{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:4px 16px}
.nb__label{font-weight:600;color:#f3f4f6;white-space:nowrap}
.nb__links{display:flex;gap:6px 18px;flex-wrap:wrap;align-items:center}
.nb__links a{color:#9ca3af;font-size:.72rem;transition:color var(--ease);white-space:nowrap}
.nb__links a:hover{color:#fff}
.nb__links .nb--active{color:var(--accent);font-weight:600}
.nb__div{width:1px;height:10px;background:#374151;display:inline-block}

/* === HEADER === */
.hdr{background:var(--white);border-bottom:1px solid var(--brd);position:sticky;top:0;z-index:100}
.hdr__in{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:12px}
.logo__icon{width:40px;height:40px;flex-shrink:0}
.logo__txt{display:flex;flex-direction:column;line-height:1.2}
.logo__name{font-size:1.1rem;font-weight:700;color:var(--txt);letter-spacing:-.01em}
.logo__sub{font-size:.7rem;color:var(--muted);font-weight:400;letter-spacing:.04em}
.nav{display:flex;align-items:center;gap:28px}
.nav a{font-size:.875rem;font-weight:500;color:var(--txt2);transition:color var(--ease)}
.nav a:hover{color:var(--brand)}
.btn-erp{display:inline-flex;align-items:center;gap:6px;padding:8px 20px;background:var(--brand);color:#fff!important;font-weight:600;font-size:.85rem;border-radius:var(--r-s);transition:background var(--ease),transform var(--ease)}
.btn-erp:hover{background:var(--brand-dark);color:#fff!important;transform:translateY(-1px)}
.mob-btn{display:none;background:0;border:0;cursor:pointer;padding:8px}
.mob-btn svg{width:24px;height:24px;color:var(--txt)}

/* === BUTTONS === */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;font-weight:600;font-size:.9rem;border-radius:var(--r-s);border:none;cursor:pointer;transition:all var(--ease);font-family:var(--font)}
.btn--p{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(26,86,219,.3)}
.btn--p:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(26,86,219,.35);color:#fff}
.btn--o{background:var(--white);color:var(--txt);border:1.5px solid var(--brd2)}
.btn--o:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn--w{background:#fff;color:var(--brand);font-weight:700;box-shadow:0 4px 14px rgba(0,0,0,.15)}
.btn--w:hover{background:#f9fafb;transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.2);color:var(--brand-dark)}

/* === HERO === */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#f0f5ff 0%,#e8effc 50%,#fef3c7 100%);min-height:540px;display:flex;align-items:center}
.hero__bg{position:absolute;inset:0;opacity:.4;pointer-events:none;background-image:radial-gradient(circle at 20% 80%,rgba(26,86,219,.06) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(245,158,11,.06) 0%,transparent 50%),radial-gradient(circle at 50% 50%,rgba(26,86,219,.03) 0%,transparent 70%)}
.hero__in{max-width:1200px;margin:0 auto;padding:60px 20px 70px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:1}
.hero__badge{display:inline-flex;align-items:center;gap:6px;background:var(--white);border:1px solid var(--brd);padding:5px 14px;border-radius:50px;font-size:.78rem;font-weight:500;color:var(--txt2);margin-bottom:20px;box-shadow:var(--sh-s)}
.hero__dot{width:7px;height:7px;background:#10b981;border-radius:50%;animation:pdot 2s ease-in-out infinite}
@keyframes pdot{0%,100%{opacity:1}50%{opacity:.4}}
.hero__h1{font-size:clamp(2rem,4vw,3rem);font-weight:800;line-height:1.15;letter-spacing:-.025em;color:var(--txt);margin-bottom:18px}
.hero__h1 span{background:linear-gradient(135deg,var(--brand),#3b82f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero__p{font-size:1.05rem;color:var(--txt2);line-height:1.7;margin-bottom:32px;max-width:520px}
.hero__acts{display:flex;gap:14px;flex-wrap:wrap}

/* Hero Cards */
.hero__vis{display:flex;justify-content:center;align-items:center}
.hcards{position:relative;width:100%;max-width:420px;aspect-ratio:4/3}
.hc{position:absolute;background:var(--white);border-radius:var(--r-l);box-shadow:var(--sh-l);padding:24px;border:1px solid var(--brd);transition:transform .5s cubic-bezier(.4,0,.2,1)}
.hc--main{width:85%;bottom:0;left:0;z-index:3}
.hc--f1{width:55%;top:0;right:0;z-index:2}
.hc--f2{width:48%;top:30%;right:5%;z-index:1;opacity:.7}
.hc__hdr{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.hc__ico{width:36px;height:36px;border-radius:var(--r-s);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.hc__ico--b{background:var(--brand-light)}
.hc__ico--a{background:var(--accent-light)}
.hc__ico--g{background:#d1fae5}
.hc__lbl{font-size:.78rem;font-weight:600;color:var(--txt2);text-transform:uppercase;letter-spacing:.05em}
.hc__word{font-size:1.6rem;font-weight:700;color:var(--txt);margin-bottom:4px}
.hc__phon{font-size:.85rem;color:var(--muted);margin-bottom:12px}
.hc__prog{display:flex;align-items:center;gap:10px}
.mprog{flex:1;height:6px;background:var(--subtle);border-radius:3px;overflow:hidden}
.mprog__fill{height:100%;background:linear-gradient(90deg,var(--brand),#3b82f6);border-radius:3px;transition:width 1.5s ease}
.mprog__txt{font-size:.75rem;font-weight:600;color:var(--brand);white-space:nowrap}
.hc--f1 .srow{display:flex;align-items:center;gap:8px;margin-top:8px}
.srow__num{font-size:1.5rem;font-weight:800;color:var(--txt)}
.srow__lbl{font-size:.72rem;color:var(--muted);line-height:1.3}

/* === STATS RIBBON === */
.ribbon{background:var(--white);border-top:1px solid var(--brd);border-bottom:1px solid var(--brd);padding:28px 0}
.ribbon__in{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ri{text-align:center}
.ri__num{font-size:1.8rem;font-weight:800;color:var(--brand);line-height:1;margin-bottom:4px}
.ri__lbl{font-size:.8rem;color:var(--muted);font-weight:500}

/* === SECTIONS === */
.sec{padding:80px 0}
.sec--alt{background:var(--light)}
.sec__in{max-width:1200px;margin:0 auto;padding:0 20px}
.sec__hdr{text-align:center;margin-bottom:50px}
.sec__eye{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--brand);margin-bottom:10px}
.sec__h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;color:var(--txt);letter-spacing:-.02em;margin-bottom:14px}
.sec__sub{font-size:1rem;color:var(--txt2);max-width:600px;margin:0 auto;line-height:1.7}

/* === FEATURES === */
.fgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.fc{background:var(--white);border:1px solid var(--brd);border-radius:var(--r-l);padding:32px 28px;transition:all var(--ease)}
.fc:hover{border-color:var(--brand);box-shadow:var(--sh-l);transform:translateY(-4px)}
.fc__ico{width:48px;height:48px;border-radius:var(--r-m);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.fc__ico--b{background:var(--brand-light)}
.fc__ico--a{background:var(--accent-light)}
.fc__ico--g{background:#d1fae5}
.fc__ico--p{background:#ede9fe}
.fc__ico--r{background:#ffe4e6}
.fc__ico--c{background:#cffafe}
.fc__h3{font-size:1.05rem;font-weight:700;color:var(--txt);margin-bottom:8px}
.fc__p{font-size:.88rem;color:var(--txt2);line-height:1.65}

/* === AI SHOWCASE === */
.ai{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.ai__vis{background:linear-gradient(135deg,var(--brand-light),#dbeafe);border-radius:var(--r-xl);padding:40px}
.aif{display:flex;flex-direction:column;gap:16px}
.aif__s{background:var(--white);border-radius:var(--r-m);padding:16px 20px;display:flex;align-items:center;gap:14px;box-shadow:var(--sh-s);border:1px solid var(--brd)}
.aif__n{width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;flex-shrink:0}
.aif__t{font-size:.88rem;color:var(--txt);font-weight:500}
.aif__t small{display:block;font-weight:400;color:var(--muted);font-size:.78rem;margin-top:2px}
.ai__cnt .sec__eye,.ai__cnt .sec__h2{text-align:left}
.ai__cnt .sec__sub{text-align:left;margin:0}
.ai__list{list-style:none;margin-top:28px;display:flex;flex-direction:column;gap:14px}
.ai__list li{display:flex;align-items:flex-start;gap:12px;font-size:.9rem;color:var(--txt2);line-height:1.55}
.ai__list .ck{width:22px;height:22px;border-radius:50%;background:#d1fae5;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}
.ai__list .ck svg{width:12px;height:12px;color:#059669}

/* === PATHFINDER === */
.pf{background:var(--white);border:1px solid var(--brd);border-radius:var(--r-xl);padding:40px;max-width:720px;margin:0 auto;box-shadow:var(--sh-m)}
.pf__h{font-size:1.2rem;font-weight:700;text-align:center;margin-bottom:8px}
.pf__sub{font-size:.88rem;color:var(--muted);text-align:center;margin-bottom:28px}
.pf__form{display:grid;grid-template-columns:1fr 1fr auto;gap:14px;align-items:end}
.pf__grp label{display:block;font-size:.78rem;font-weight:600;color:var(--txt2);margin-bottom:6px;text-transform:uppercase;letter-spacing:.05em}
.pf__sel{width:100%;padding:11px 14px;border:1.5px solid var(--brd2);border-radius:var(--r-s);font-size:.9rem;font-family:var(--font);color:var(--txt);background:var(--white);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;cursor:pointer;transition:border-color var(--ease)}
.pf__sel:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,86,219,.1)}
.pf__res{margin-top:24px;padding:20px;background:var(--brand-light);border-radius:var(--r-m);display:none}
.pf__res.active{display:block}
.pf__res-h{font-size:.95rem;font-weight:700;color:var(--brand-dark);margin-bottom:6px}
.pf__res-p{font-size:.85rem;color:var(--txt2);line-height:1.6}

/* === TRUST CLOUD === */
.tc{columns:3;column-gap:20px}
.tci{break-inside:avoid;background:var(--white);border:1px solid var(--brd);border-radius:var(--r-l);padding:24px;margin-bottom:20px;transition:all var(--ease)}
.tci:hover{box-shadow:var(--sh-l);transform:translateY(-3px)}
.tci--hi{background:linear-gradient(135deg,var(--brand-light),#dbeafe);border-color:rgba(26,86,219,.15)}
.tci--ac{background:linear-gradient(135deg,var(--accent-light),#fef9c3);border-color:rgba(245,158,11,.15)}
.tci__q{font-size:.9rem;color:var(--txt2);line-height:1.7;margin-bottom:14px;font-style:italic}
.tci__stat{font-size:2rem;font-weight:800;color:var(--brand);margin-bottom:4px}
.tci__sl{font-size:.82rem;color:var(--muted)}
.tci__auth{display:flex;align-items:center;gap:10px}
.tci__av{width:36px;height:36px;border-radius:50%;background:var(--brand-light);display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;color:var(--brand);flex-shrink:0}
.tci__name{font-size:.82rem;font-weight:600;color:var(--txt)}
.tci__role{font-size:.72rem;color:var(--muted)}

/* === TEACHERS === */
.tg{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ti{background:var(--white);border:1px solid var(--brd);border-radius:var(--r-l);overflow:hidden;transition:all var(--ease)}
.ti:hover{box-shadow:var(--sh-l);transform:translateY(-4px)}
.ti__photo{height:200px;background:linear-gradient(135deg,var(--brand-light),#dbeafe);display:flex;align-items:center;justify-content:center;position:relative}
.ti__init{width:80px;height:80px;border-radius:50%;background:var(--white);display:flex;align-items:center;justify-content:center;font-size:1.8rem;font-weight:800;color:var(--brand);box-shadow:var(--sh-m)}
.ti__badge{position:absolute;top:12px;right:12px;background:var(--white);padding:4px 10px;border-radius:50px;font-size:.7rem;font-weight:600;color:var(--brand);box-shadow:var(--sh-s)}
.ti__info{padding:22px}
.ti__name{font-size:1.05rem;font-weight:700;color:var(--txt);margin-bottom:4px}
.ti__title{font-size:.8rem;color:var(--brand);font-weight:500;margin-bottom:10px}
.ti__bio{font-size:.84rem;color:var(--txt2);line-height:1.6}
.ti__tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.ti__tag{padding:3px 10px;background:var(--subtle);border-radius:50px;font-size:.7rem;font-weight:500;color:var(--txt2)}

/* === PROGRAMS === */
.pg{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.pi{background:var(--white);border:1px solid var(--brd);border-radius:var(--r-l);padding:32px;display:flex;gap:20px;transition:all var(--ease)}
.pi:hover{box-shadow:var(--sh-l);transform:translateY(-3px)}
.pi__ico{width:52px;height:52px;border-radius:var(--r-m);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pi__h{font-size:1rem;font-weight:700;color:var(--txt);margin-bottom:6px}
.pi__p{font-size:.85rem;color:var(--txt2);line-height:1.6}
.pi__meta{display:flex;gap:16px;margin-top:10px}
.pi__meta span{font-size:.75rem;color:var(--muted);font-weight:500}

/* === CTA === */
.cta{background:linear-gradient(135deg,var(--brand),var(--brand-dark));padding:70px 0;text-align:center}
.cta__in{max-width:640px;margin:0 auto;padding:0 20px}
.cta__h2{font-size:clamp(1.5rem,3vw,2rem);font-weight:800;color:#fff;margin-bottom:14px}
.cta__p{font-size:1rem;color:rgba(255,255,255,.8);margin-bottom:30px;line-height:1.7}

/* === FOOTER === */
.ft{background:var(--txt);color:#9ca3af;padding:50px 0 30px}
.ft__in{max-width:1200px;margin:0 auto;padding:0 20px}
.ft__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.ft__brand-name{font-size:1.1rem;font-weight:700;color:#f3f4f6;margin-bottom:10px}
.ft__brand-desc{font-size:.84rem;line-height:1.65;color:#6b7280}
.ft__col-title{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:#d1d5db;margin-bottom:14px}
.ft__col ul{list-style:none}
.ft__col li{margin-bottom:8px}
.ft__col a{font-size:.84rem;color:#6b7280;transition:color var(--ease)}
.ft__col a:hover{color:#f3f4f6}
.ft__bot{border-top:1px solid #1f2937;padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.ft__copy{font-size:.78rem;color:#4b5563}
.ft__links{display:flex;gap:20px}
.ft__links a{font-size:.78rem;color:#4b5563}
.ft__links a:hover{color:#9ca3af}

/* === MOBILE NAV === */
.mnav{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:200}
.mnav.active{display:block}
.mnav__pan{position:absolute;right:0;top:0;bottom:0;width:280px;background:var(--white);padding:24px;box-shadow:-4px 0 20px rgba(0,0,0,.1);display:flex;flex-direction:column;gap:8px}
.mnav__x{align-self:flex-end;background:0;border:0;cursor:pointer;padding:8px}
.mnav__x svg{width:24px;height:24px}
.mnav a{display:block;padding:12px 0;font-size:1rem;font-weight:500;color:var(--txt);border-bottom:1px solid var(--brd)}
.mnav .btn-erp{margin-top:16px;justify-content:center}

/* === SEASONAL === */
.hero[data-season="spring"]{background:linear-gradient(135deg,#f0fdf4 0%,#dcfce7 50%,#fef3c7 100%)}
.hero[data-season="summer"]{background:linear-gradient(135deg,#f0f9ff 0%,#e0f2fe 50%,#fef3c7 100%)}
.hero[data-season="autumn"]{background:linear-gradient(135deg,#fefce8 0%,#fef3c7 50%,#fed7aa 100%)}
.hero[data-season="winter"]{background:linear-gradient(135deg,#f8fafc 0%,#e2e8f0 50%,#dbeafe 100%)}

/* === RESPONSIVE === */
@media(max-width:1024px){
  .hero__in{grid-template-columns:1fr;gap:40px}
  .hero__vis{order:-1}
  .hcards{max-width:360px;margin:0 auto}
  .fgrid{grid-template-columns:repeat(2,1fr)}
  .ai{grid-template-columns:1fr;gap:40px}
  .ai__vis{order:-1}
  .tg{grid-template-columns:repeat(2,1fr)}
  .ft__grid{grid-template-columns:1fr 1fr}
  .tc{columns:2}
}
@media(max-width:768px){
  .nb__links{display:none}
  .nav{display:none}
  .mob-btn{display:block}
  .hdr__in{height:56px}
  .hero{min-height:auto}
  .hero__in{padding:40px 20px 50px}
  .hero__h1{font-size:1.75rem}
  .hero__p{font-size:.95rem}
  .hero__acts{flex-direction:column}
  .hero__acts .btn{width:100%;justify-content:center}
  .hcards{max-width:300px}
  .ribbon__in{grid-template-columns:repeat(2,1fr);gap:16px}
  .ri__num{font-size:1.4rem}
  .sec{padding:50px 0}
  .fgrid{grid-template-columns:1fr}
  .pf{padding:24px}
  .pf__form{grid-template-columns:1fr}
  .pf__form .btn{width:100%}
  .pg{grid-template-columns:1fr}
  .pi{flex-direction:column;gap:14px}
  .tg{grid-template-columns:1fr}
  .tc{columns:1}
  .ft__grid{grid-template-columns:1fr;gap:24px}
  .ft__bot{flex-direction:column;text-align:center}
  .cta{padding:50px 0}
}
@media(max-width:480px){
  .logo__name{font-size:.95rem}
  .logo__sub{font-size:.65rem}
  .hero__h1{font-size:1.5rem}
  .sec__h2{font-size:1.3rem}
}