:root{
  --ink:#0d1930; --ink2:#1a2944; --muted:#66738a;
  --blue:#1768f2; --blue2:#3f91ff; --cyan:#22b9d8;
  --green:#24b784; --orange:#ff9b21; --purple:#745fe9; --red:#ef5d66;
  --line:#e8eef7; --soft:#f7faff; --shadow:0 18px 50px rgba(39,78,126,.10);
  --shadow-sm:0 10px 28px rgba(39,78,126,.08); --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; color:var(--ink);
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
  "Segoe UI","Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;
  background:
    radial-gradient(circle at 85% 4%,rgba(62,145,255,.08),transparent 20%),
    #fff;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button,input{font:inherit}
.wrap{width:min(1180px,calc(100% - 40px));margin:auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;background:#fff;padding:12px;z-index:999;border-radius:10px}
nav{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(13,25,48,.07)}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:11px;font-weight:950;white-space:nowrap}
.brand img{width:38px;height:38px;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:24px;color:#516079;font-weight:700;font-size:14px}
.nav-links a:hover{color:var(--blue)}
.nav-actions{display:flex;gap:10px;align-items:center}
.login-link{font-weight:800;color:#4c5d78;padding:10px 12px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 22px;border-radius:15px;border:0;font-weight:900;cursor:pointer;transition:.2s ease}
.btn:hover{transform:translateY(-2px)}
.btn.primary{color:#fff;background:linear-gradient(135deg,#1463ed,#4198ff);box-shadow:0 12px 28px rgba(23,104,242,.22)}
.btn.secondary{color:#24558f;background:#f5f9ff;border:1px solid #dce9ff}
.btn.dark{color:#fff;background:#0f1c33}
.hero{padding:82px 0 76px;display:grid;grid-template-columns:1.03fr .97fr;gap:52px;align-items:center}
.eyebrow{display:inline-flex;gap:9px;align-items:center;padding:9px 14px;border-radius:999px;background:#eef5ff;color:var(--blue);font-size:14px;font-weight:850;margin-bottom:22px}
.eyebrow:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 5px rgba(23,104,242,.10)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(46px,5.8vw,78px);line-height:1.07;letter-spacing:-.045em;margin-bottom:22px}
.blue{color:var(--blue)}
.under{position:relative;display:inline-block;z-index:0}.under:after{content:"";position:absolute;left:0;right:0;bottom:3px;height:12px;border-radius:9px;background:#cfe2ff;z-index:-1;transform:rotate(-1deg)}
.lead{font-size:clamp(18px,2vw,23px);line-height:1.75;color:var(--muted);max-width:700px}
.lead strong{color:var(--ink2)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.proof-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:20px;color:#6e7a8f;font-size:14px;font-weight:750}
.proof-row span:before{content:"✓";display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;margin-right:7px;color:#fff;background:var(--green);font-size:12px}
.hero-art-wrap{min-height:520px;border-radius:38px;background:linear-gradient(145deg,#f8fbff,#edf5ff);border:1px solid #e3edf9;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;overflow:hidden;padding:12px}
.hero-art{width:108%;max-width:none;filter:drop-shadow(0 20px 32px rgba(40,80,130,.11))}
.section{padding:82px 0}
.section.alt{background:linear-gradient(180deg,#fbfdff,#f7faff)}
.section-head{max-width:840px;margin:0 auto 40px;text-align:center}
.kicker{color:var(--blue);font-weight:900;font-size:14px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px}
.section h2{font-size:clamp(34px,4.5vw,58px);line-height:1.13;letter-spacing:-.035em;margin-bottom:15px}
.section-sub{color:var(--muted);font-size:19px;line-height:1.7}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.pain-card,.result-card,.fit-card,.price-card,.faq details,.module,.mini-card{border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.pain-card{border-radius:22px;padding:24px;background:#fff}
.pain-card .ico{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:#eef5ff;font-size:23px;margin-bottom:18px}
.pain-card h3{font-size:19px;margin-bottom:9px}.pain-card p{color:var(--muted);line-height:1.6;margin:0}
.demo{display:grid;grid-template-columns:.92fr 1.16fr .92fr;gap:22px;align-items:center}
.demo-side{border-radius:28px;padding:28px;min-height:380px;border:1px solid var(--line);box-shadow:var(--shadow-sm);background:#fff}
.demo-side.before{background:linear-gradient(160deg,#fff7f2,#fff)}
.demo-side.after{background:linear-gradient(160deg,#eefbf7,#fff)}
.demo-label{font-size:13px;font-weight:900;letter-spacing:.08em;color:#7b8799;text-transform:uppercase}
.demo-side h3{font-size:28px;margin:8px 0 20px}
.steps{display:grid;gap:10px}
.step{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:14px;background:rgba(255,255,255,.86);border:1px solid rgba(34,70,120,.07);color:#46536b;font-weight:750}
.step b{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;background:#eef2f7;color:#728098;font-size:12px}
.after .step b{background:#e6f8f1;color:var(--green)}
.demo-video{aspect-ratio:16/10;border-radius:30px;background:radial-gradient(circle at 30% 20%,rgba(86,163,255,.26),transparent 35%),linear-gradient(145deg,#10203c,#16345d);box-shadow:var(--shadow);display:grid;place-items:center;padding:28px;color:#fff;text-align:center;position:relative;overflow:hidden}
.play{width:76px;height:76px;border-radius:50%;display:grid;place-items:center;background:#fff;color:var(--blue);font-size:26px;box-shadow:0 12px 32px rgba(0,0,0,.18);margin:0 auto 18px}
.demo-video p{color:#d7e4f7;margin:8px auto 0;max-width:360px;line-height:1.55}
.result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.result-card{display:flex;gap:18px;align-items:flex-start;border-radius:24px;padding:26px;background:#fff}
.result-no{flex:0 0 auto;width:50px;height:50px;border-radius:16px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue2));font-weight:950}
.result-card h3{font-size:22px;margin-bottom:7px}.result-card p{margin:0;color:var(--muted);line-height:1.65}
.split{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.split-card{position:relative;overflow:hidden;min-height:430px;border-radius:30px;padding:30px;border:1px solid var(--line);box-shadow:var(--shadow)}
.user-card{background:linear-gradient(150deg,#eef7ff,#fbfdff)}.ai-card{background:linear-gradient(150deg,#f2efff,#fbfaff)}
.split-copy{position:relative;z-index:2;width:63%}.split-card h3{font-size:33px;margin-bottom:19px}
.resp{background:rgba(255,255,255,.9);border:1px solid rgba(35,80,135,.06);border-radius:17px;padding:15px 16px;margin-top:10px}
.resp b{display:block;font-size:17px}.resp span{display:block;color:#7a8495;font-size:14px;margin-top:3px}
.split-character{position:absolute;right:-12px;bottom:-10px;width:47%;max-height:78%;object-fit:contain;filter:drop-shadow(0 15px 24px rgba(45,80,125,.10))}
.ai-card .split-character{width:45%;right:0}
.signal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.signal{position:relative;overflow:hidden;min-height:300px;border-radius:28px;padding:26px 150px 26px 26px;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.signal:nth-child(1){background:linear-gradient(155deg,#edf6ff,#fff)}
.signal:nth-child(2){background:linear-gradient(155deg,#edf9f5,#fff)}
.signal:nth-child(3){background:linear-gradient(155deg,#fff5e9,#fff)}
.signal .num{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;color:#fff;font-weight:950;background:var(--blue)}
.signal:nth-child(2) .num{background:var(--green)}.signal:nth-child(3) .num{background:var(--orange)}
.signal h3{font-size:22px;margin:20px 0 8px}.signal p{color:var(--muted);line-height:1.6;margin:0}
.signal img{position:absolute;right:12px;bottom:8px;width:145px;height:145px;object-fit:contain}
.curriculum{display:grid;gap:12px;max-width:980px;margin:auto}
.module{border-radius:20px;background:#fff;overflow:hidden}
.module summary{list-style:none;cursor:pointer;padding:22px 24px;display:grid;grid-template-columns:82px 1fr 34px;gap:16px;align-items:center}
.module summary::-webkit-details-marker{display:none}
.module-no{color:var(--blue);font-weight:950}.module-title{font-size:20px;font-weight:900}
.module summary:after{content:"＋";font-size:26px;color:#8793a6;text-align:center}.module[open] summary:after{content:"−"}
.module-body{padding:0 24px 24px 122px;color:var(--muted);line-height:1.7;border-top:1px solid #f0f3f8}
.module-body ul{margin:16px 0 0;padding-left:20px}
.fit-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.fit-card{border-radius:28px;padding:30px;background:#fff}.fit-card.good{background:linear-gradient(160deg,#effaf6,#fff)}.fit-card.no{background:linear-gradient(160deg,#fff4f5,#fff)}
.fit-card h3{font-size:28px}.fit-list{display:grid;gap:12px;margin-top:18px}
.fit-item{display:flex;gap:11px;align-items:flex-start;color:#4f5d73;line-height:1.55}
.fit-item:before{content:"✓";flex:0 0 auto;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:#ddf5eb;color:var(--green);font-weight:900}
.no .fit-item:before{content:"×";background:#fde7e9;color:var(--red)}
.instructor{display:grid;grid-template-columns:.82fr 1.18fr;gap:48px;align-items:center}
.instructor-visual{border-radius:34px;background:linear-gradient(145deg,#eef6ff,#f8fbff);border:1px solid var(--line);padding:26px;box-shadow:var(--shadow)}
.instructor-visual img{max-height:480px;margin:auto;object-fit:contain}
.instructor-copy h2{font-size:clamp(36px,4.6vw,58px)}
.instructor-copy p{color:var(--muted);font-size:18px;line-height:1.78}
.cred{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.cred span{padding:9px 13px;border-radius:999px;background:#eef5ff;color:#3d5d8b;font-size:13px;font-weight:800}
.price-wrap{max-width:760px;margin:auto}
.price-card{border-radius:32px;padding:38px;background:#fff;box-shadow:0 24px 70px rgba(34,78,135,.13);position:relative;overflow:hidden}
.price-card:before{content:"";position:absolute;inset:0 0 auto;height:6px;background:linear-gradient(90deg,var(--blue),#62b6ff,var(--green))}
.price-tag{display:inline-flex;padding:8px 12px;border-radius:999px;background:#eef5ff;color:var(--blue);font-weight:900;font-size:13px}
.price{font-size:58px;font-weight:950;letter-spacing:-.05em;margin:18px 0 3px}.price small{font-size:18px;letter-spacing:0;color:#6f7b8e}
.includes{display:grid;grid-template-columns:1fr 1fr;gap:11px;margin:26px 0}.inc{display:flex;gap:9px;color:#4d5c72}.inc:before{content:"✓";color:var(--green);font-weight:950}
.price-note{color:#7b8799;font-size:14px;line-height:1.6;margin-top:15px}
.faq{max-width:900px;margin:auto;display:grid;gap:11px}
.faq details{border-radius:18px;background:#fff}
.faq summary{cursor:pointer;list-style:none;padding:20px 22px;font-weight:850;display:flex;justify-content:space-between;gap:18px}
.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"＋";color:#8390a4;font-size:22px}.faq details[open] summary:after{content:"−"}
.faq p{padding:0 22px 20px;margin:0;color:var(--muted);line-height:1.7}
.final{padding:82px 0 105px}
.final-box{position:relative;overflow:hidden;border-radius:34px;padding:56px 330px 56px 44px;background:radial-gradient(circle at 58% 0%,rgba(74,153,255,.16),transparent 38%),linear-gradient(180deg,#f4f9ff,#fbfdff);border:1px solid #e0eaf7;box-shadow:var(--shadow)}
.final-box h2{font-size:clamp(36px,4.6vw,58px);margin-bottom:16px}.final-box p{color:var(--muted);font-size:18px;line-height:1.7;max-width:680px}
.final-robot{position:absolute;right:22px;bottom:-30px;width:300px;filter:drop-shadow(0 18px 28px rgba(45,85,135,.11))}
footer{border-top:1px solid #edf1f6;padding:34px 0 46px;color:#7d899b;font-size:13px}
.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.mobile-cta{display:none}
@media(max-width:1020px){
  .nav-links{display:none}.hero{grid-template-columns:1fr;gap:34px}.hero-art-wrap{min-height:470px}
  .grid4{grid-template-columns:1fr 1fr}.demo{grid-template-columns:1fr}.demo-video{order:-1}
  .signal-grid{grid-template-columns:1fr}.signal{min-height:235px}
  .instructor{grid-template-columns:1fr}.instructor-visual img{max-height:380px}
}
@media(max-width:760px){
  .wrap{width:min(100% - 28px,1180px)}.nav-actions .btn{display:none}.login-link{padding:8px}
  .hero{padding-top:52px}.hero-art-wrap{min-height:330px;padding:5px}.hero-art{width:116%}
  h1{font-size:44px}.lead{font-size:18px}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}
  .grid4,.result-grid,.split,.fit-grid,.includes{grid-template-columns:1fr}
  .split-card{min-height:540px}.split-copy{width:100%}.split-character,.ai-card .split-character{width:48%;max-height:42%;right:5px}
  .module summary{grid-template-columns:60px 1fr 28px;padding:19px}.module-body{padding:0 20px 20px 20px}
  .final-box{padding:44px 24px 245px;text-align:center}.final-robot{width:230px;left:50%;right:auto;transform:translateX(-50%);bottom:-20px}
  .footer-inner{display:block}.footer-links{margin-top:14px}
  .mobile-cta{display:block;position:fixed;left:12px;right:12px;bottom:12px;z-index:50}.mobile-cta .btn{width:100%;box-shadow:0 12px 32px rgba(23,104,242,.30)}
}