:root{--night:#0b0e1e;--night2:#12162b;--night3:#1a1f3a;--paper:#f5f2ec;--paper2:#ebe6dc;--ink:#14162a;--teal:#16e0c8;--pink:#ff3d8b;--mut:#9aa0bd;--mut2:#5a5f78;--line:rgba(255,255,255,.12);--r:22px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--night);color:#eef0f8;font-family:Manrope,system-ui,sans-serif;font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}a{color:inherit}
.wrap{width:min(1200px,100% - 40px);margin-inline:auto}.narrow{width:min(860px,100% - 40px)}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:99;background:#fff;color:#000;padding:8px 12px;border-radius:8px}
h1,h2,h3{margin:0;font-family:Unbounded,system-ui,sans-serif;line-height:1.08;letter-spacing:-.01em}
h2{font-size:clamp(30px,4.6vw,54px);font-weight:900}
h3{font-size:18px;font-weight:700}
.tag{display:inline-flex;align-items:center;gap:8px;margin:0 0 16px;font-weight:800;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--pink)}
.tag::before{content:"";width:22px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--teal),var(--pink))}
.sub{max-width:700px;margin:16px 0 0;color:var(--mut)}
.fine{font-size:13px;color:var(--mut);margin:22px 0 0}
/* nav */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:background .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.scrolled,.nav.open{background:rgba(11,14,30,.9);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-color:var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-bars{display:flex;gap:4px}.logo-bars i{display:block;width:8px;height:30px;border-radius:3px;background:var(--teal);transform:skewX(-14deg)}.logo-bars i+i{background:var(--pink)}
.logo-word{font-family:Unbounded,sans-serif;font-weight:900;font-size:14px;line-height:1.02;letter-spacing:.06em}
.menu{display:flex;gap:2px;align-items:center}
.menu a{text-decoration:none;font-size:14.5px;font-weight:600;color:#c9cde0;padding:8px 12px;border-radius:10px;transition:color .2s,background .2s}
.menu a:hover{color:#fff;background:rgba(255,255,255,.08)}
.menu-btn{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer;position:relative}
.menu-btn span{position:absolute;left:10px;right:10px;height:2px;background:#fff;transition:transform .3s,top .3s}
.menu-btn span:first-child{top:17px}.menu-btn span:last-child{top:25px}
.menu-btn[aria-expanded=true] span:first-child{top:21px;transform:rotate(45deg)}
.menu-btn[aria-expanded=true] span:last-child{top:21px;transform:rotate(-45deg)}
/* buttons */
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 26px;border-radius:14px;font-weight:800;text-decoration:none;font-size:16px;transition:transform .2s,background .2s,box-shadow .2s,color .2s}
.btn:hover{transform:translateY(-2px)}
.btn-teal{background:var(--teal);color:var(--night);box-shadow:0 12px 30px -12px rgba(22,224,200,.8)}
.btn-teal:hover{background:#fff}
.btn-line{border:2px solid rgba(255,255,255,.35);color:#fff}.btn-line:hover{border-color:var(--pink);color:var(--pink)}
.btn-ink{background:var(--night);color:#fff}
/* hero */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;padding:110px 0 36px;isolation:isolate;overflow:hidden}
.hero-img,.hero-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.hero-img img{animation:zoom 18s ease-out both}
@keyframes zoom{from{transform:scale(1.08)}}
.hero-shade{position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(11,14,30,.94) 0%,rgba(11,14,30,.7) 42%,rgba(11,14,30,.15) 75%),linear-gradient(0deg,var(--night) 0%,rgba(11,14,30,0) 40%)}
.hero-in{max-width:1200px}
.pill{display:inline-flex;align-items:center;gap:10px;margin:0 0 22px;padding:8px 16px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid var(--line);font-weight:700;font-size:14px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 0 rgba(22,224,200,.7);animation:ping 2s infinite}
@keyframes ping{70%{box-shadow:0 0 0 10px rgba(22,224,200,0)}100%{box-shadow:0 0 0 0 rgba(22,224,200,0)}}
h1{font-size:clamp(40px,7.4vw,96px);font-weight:900;max-width:880px;line-height:1}
h1 em{display:block;font-style:normal;background:linear-gradient(90deg,var(--teal),#8cf2ff 45%,var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{max-width:580px;margin:22px 0 0;font-size:clamp(17px,1.8vw,20px);color:#d8dbea}
.hero-facts{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin:56px 0 0;border:1px solid var(--line);border-radius:var(--r);background:rgba(18,22,43,.72);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);overflow:hidden}
.hero-facts div{padding:20px 22px;border-left:1px solid var(--line)}.hero-facts div:first-child{border-left:0}
.hero-facts dt{font-family:Unbounded;font-weight:700;font-size:20px;color:var(--teal)}
.hero-facts div:nth-child(even) dt{color:var(--pink)}
.hero-facts dd{margin:2px 0 0;color:var(--mut);font-size:14px}
/* sections */
.sec{padding:clamp(76px,10vw,128px) 0}
.light{background:var(--paper);color:var(--ink)}
.light .sub,.light .fine{color:var(--mut2)}
.head{margin-bottom:46px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,72px);align-items:center}
.split.rev .split-copy{order:2}
.split-copy>p{margin:18px 0 0}
.light .split-copy>p{color:#363a52}
.split-img{margin:0;position:relative}
.split-img img{border-radius:28px;aspect-ratio:4/3;object-fit:cover;width:100%;box-shadow:0 30px 60px -30px rgba(11,14,30,.6)}
.split-img::before{content:"";position:absolute;inset:18px -18px -18px 18px;border-radius:28px;background:linear-gradient(135deg,var(--teal),var(--pink));z-index:-1;opacity:.9}
.split-img{isolation:isolate}
.chips{list-style:none;padding:0;margin:26px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.chips li{padding:8px 14px;border-radius:999px;background:var(--ink);color:#fff;font-weight:700;font-size:14px}
.chips li:nth-child(odd){background:var(--teal);color:var(--ink)}
/* tracks */
.tracks{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.tracks li{background:var(--night2);border:1px solid var(--line);border-radius:18px;padding:20px;display:flex;flex-direction:column;gap:12px;transition:transform .25s,border-color .25s}
.tracks li:hover{transform:translateY(-4px);border-color:var(--teal)}
.tracks li>span{font-family:Unbounded;font-weight:900;font-size:28px;line-height:1;background:linear-gradient(135deg,var(--teal),var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent}
.tracks h3{font-size:16px}.tracks p{margin:6px 0 0;color:var(--mut);font-size:14.5px;line-height:1.5}
/* releases + benefits */
.callout{margin-top:24px;padding:18px 20px;border-radius:16px;background:#fff;border-left:5px solid var(--pink);color:#2b2f47}
.benefit-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bg-title{grid-column:1/-1;font-size:20px;margin-bottom:4px}
.bcard{background:#fff;border-radius:18px;padding:20px;border:1px solid var(--paper2)}
.bcard b{font-family:Unbounded;font-size:15px;display:block;margin-bottom:6px}
.bcard:nth-of-type(odd) b{color:#0aa794}.bcard:nth-of-type(even) b{color:#d9206c}
.bcard p{margin:0;color:#474b63;font-size:15px;line-height:1.5}
.benefit-grid .fine{grid-column:1/-1;margin:4px 0 0}
/* steps & checks */
.steps{list-style:none;counter-reset:s;padding:0;margin:26px 0 0;display:grid;gap:12px}
.steps li{counter-increment:s;position:relative;padding:16px 18px 16px 62px;background:var(--night2);border:1px solid var(--line);border-radius:16px;color:var(--mut)}
.steps li b{color:#fff}
.steps li::before{content:counter(s);position:absolute;left:16px;top:14px;width:32px;height:32px;border-radius:10px;display:grid;place-items:center;font-family:Unbounded;font-weight:900;font-size:14px;background:var(--teal);color:var(--night)}
.steps li:nth-child(even)::before{background:var(--pink);color:#fff}
.checks{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:10px}
.checks li{position:relative;padding:14px 16px 14px 52px;border-radius:14px;background:#fff;border:1px solid var(--paper2);color:#474b63}
.checks li b{color:var(--ink)}
.checks li::before{content:"";position:absolute;left:16px;top:16px;width:22px;height:22px;border-radius:50%;background:var(--teal) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12.5l4 4 8-9' stroke='%230b0e1e' stroke-width='3' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat}
/* find */
.find-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.fcard{background:var(--night2);border:1px solid var(--line);border-radius:var(--r);padding:28px;position:relative;overflow:hidden}
.fcard::after{content:"";position:absolute;right:-50px;top:-50px;width:150px;height:150px;border-radius:50%;background:radial-gradient(circle,rgba(255,61,139,.25),transparent 70%)}
.ico{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px;background:rgba(22,224,200,.14);color:var(--teal);font-family:Unbounded;font-weight:700;font-size:14px;margin-bottom:16px}
.fcard p{color:var(--mut);margin:10px 0 0}
.link{display:inline-block;margin-top:14px;color:var(--teal);font-weight:800;text-decoration:none}.link:hover{color:var(--pink)}
/* faq */
.faq{display:grid;gap:10px}
.faq-item{border-radius:16px;background:#fff;border:1px solid var(--paper2);overflow:hidden}
.faq-item[open]{border-color:var(--teal);box-shadow:0 10px 30px -20px rgba(11,14,30,.5)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:16px;align-items:center;padding:20px 22px;font-weight:800;font-size:17px;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item i{flex:none;width:30px;height:30px;border-radius:10px;background:var(--ink);position:relative}
.faq-item i::before,.faq-item i::after{content:"";position:absolute;left:9px;right:9px;top:14px;height:2px;background:#fff;transition:transform .3s}
.faq-item i::after{transform:rotate(90deg)}.faq-item[open] i{background:var(--pink)}.faq-item[open] i::after{transform:rotate(0)}
.faq-item p{margin:0;padding:0 22px 20px;color:#474b63}
/* instructor (content unchanged, restyled) */
.instructor{position:relative;overflow:hidden;background:radial-gradient(800px 500px at 15% 40%,rgba(22,224,200,.18),transparent 65%),radial-gradient(700px 500px at 90% 80%,rgba(255,61,139,.18),transparent 65%),var(--night)}
.inst-bg{display:none}
.inst-in{position:relative;display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(28px,5vw,70px);align-items:center}
.inst-photo{position:relative;justify-self:center}
.inst-photo img{max-height:640px;width:auto;filter:drop-shadow(0 30px 60px rgba(0,0,0,.7))}
.inst-tag{position:absolute;bottom:12%;left:-2%;background:var(--pink);color:#fff;font-weight:800;text-transform:uppercase;letter-spacing:.1em;font-size:12px;padding:8px 14px;border-radius:10px;transform:rotate(-4deg)}
.inst-copy h2{font-size:clamp(30px,4.4vw,52px)}
.inst-role{color:var(--teal);font-weight:700;margin:12px 0 18px}
.inst-copy>p{color:#d0d3e4;margin:0 0 14px}
.facts{list-style:none;padding:0;margin:24px 0;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.facts li{padding:16px;border-radius:16px;background:rgba(255,255,255,.05);border:1px solid var(--line)}
.facts b{display:block;font-family:Unbounded;font-weight:700;font-size:17px;color:#fff;line-height:1.2;margin-bottom:4px}
.facts span{font-size:14px;color:var(--mut);line-height:1.35;display:block}
.times{padding:20px 22px;border-radius:16px;border-left:4px solid var(--teal);background:rgba(22,224,200,.08)}
.times p{margin:8px 0 0;color:#d0d3e4}
.instructor .btn-primary{background:var(--teal);color:var(--night)}.instructor .btn-primary:hover{background:#fff}
.instructor .btn-ghost{border:2px solid rgba(255,255,255,.3);color:#fff}.instructor .btn-ghost:hover{border-color:var(--pink);color:var(--pink)}
.small{font-size:13px;color:var(--mut);margin-top:12px}
/* cta, footer */
.cta-band{background:linear-gradient(110deg,var(--teal),#7cf0ff 45%,var(--pink));color:var(--night);padding:76px 0;text-align:center}
.cta-in h2{font-size:clamp(32px,5vw,60px)}
.cta-in p{max-width:560px;margin:12px auto 26px;font-weight:700}
.foot{padding:56px 0 30px;background:var(--night)}
.foot-in{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot p{color:var(--mut);margin:12px 0 0;font-size:15px}
.foot nav{display:flex;gap:18px;flex-wrap:wrap;align-items:flex-start}
.foot nav a{color:var(--mut);text-decoration:none;font-size:15px}.foot nav a:hover{color:var(--teal)}
.legal{margin-top:36px;padding-top:20px;border-top:1px solid var(--line)}
.legal p{font-size:13px;color:#7a7f9c;margin:6px 0}
/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.reveal.in,.no-js .reveal{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}
/* responsive */
@media (max-width:1080px){.tracks{grid-template-columns:repeat(3,1fr)}.menu a{padding:8px 9px;font-size:14px}}
@media (max-width:900px){
 .menu-btn{display:block}
 .menu{position:fixed;inset:72px 0 auto;flex-direction:column;align-items:stretch;padding:12px 20px 24px;background:rgba(11,14,30,.97);border-bottom:1px solid var(--line);transform:translateY(-130%);visibility:hidden;transition:transform .35s,visibility .35s}
 .menu.open{transform:none;visibility:visible}
 .menu a{padding:14px 12px;font-size:17px}
 .split,.inst-in{grid-template-columns:1fr}
 .split.rev .split-copy{order:0}
 .find-grid{grid-template-columns:1fr}
 .hero-facts{grid-template-columns:repeat(2,1fr)}
 .hero-facts div:nth-child(3){border-left:0}
 .hero-facts div:nth-child(n+3){border-top:1px solid var(--line)}
 .inst-photo img{max-height:460px}
}
@media (max-width:760px){
 .hero{padding-top:96px}
 .hero-shade{background:linear-gradient(0deg,var(--night) 8%,rgba(11,14,30,.86) 45%,rgba(11,14,30,.35) 100%)}
 .hero-facts{margin-top:34px}
 .hero-facts div{padding:14px 16px}.hero-facts dt{font-size:16px}.hero-facts dd{font-size:13px}
}
@media (max-width:560px){
 body{font-size:16px}
 .tracks{grid-template-columns:1fr 1fr}
 .tracks li{padding:16px}
 .benefit-grid{grid-template-columns:1fr}
 .btn{width:100%}
 .split-img::before{inset:12px -10px -12px 10px}
 .faq-item summary{font-size:16px;padding:18px}
}
@media (max-width:760px){h1{font-size:clamp(28px,9.4vw,60px)}.hero-shade{background:linear-gradient(0deg,var(--night) 6%,rgba(11,14,30,.82) 48%,rgba(11,14,30,.2) 100%)}}
/* language switcher + CJK */
.lang-sw{display:flex;gap:2px;margin-left:auto;margin-right:10px;padding:3px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.04)}
.lang-sw a{text-decoration:none;font-size:13px;font-weight:800;color:#c9cde0;padding:6px 10px;border-radius:9px;line-height:1}
.lang-sw a:hover{color:#fff;background:rgba(255,255,255,.08)}
.lang-sw a[aria-current=page]{background:var(--teal);color:var(--night)}
@media (min-width:901px){.lang-sw{order:3;margin:0 0 0 12px}.nav-in>.menu{margin-left:auto}}
html[lang=zh-Hans] body{font-family:Manrope,"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif}
html[lang=zh-Hans] h1,html[lang=zh-Hans] h2,html[lang=zh-Hans] h3,html[lang=zh-Hans] .tracks li>span,html[lang=zh-Hans] .facts b,html[lang=zh-Hans] .bcard b{font-family:Unbounded,"Noto Sans SC",sans-serif}
html[lang=zh-Hans] h1,html[lang=zh-Hans] h2{letter-spacing:0;line-height:1.2}
html[lang=zh-Hans] .tag{letter-spacing:.08em}