@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;600;700;800;900&family=Oxanium:wght@500;600;700&display=swap');

:root {
  --ink:#f4f9ff;
  --muted:#9bb8d6;
  --deep:#021a3a;
  --navy:#032751;
  --blue:#0866cf;
  --cyan:#35c6f4;
  --yellow:#ffd85d;
  --line:rgba(175,218,255,.19);
  --panel:rgba(7,46,91,.72);
  --display:'Noto Sans TC','PingFang TC',sans-serif;
  --tech:'Oxanium','Noto Sans TC',sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:
    radial-gradient(circle at 17% 16%,rgba(12,124,224,.25),transparent 27rem),
    radial-gradient(circle at 90% 60%,rgba(46,192,242,.13),transparent 28rem),
    var(--deep);
  font-family:var(--display);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;opacity:.28;z-index:20;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.12'/%3E%3C/svg%3E");
}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{color:inherit}
::selection{background:var(--yellow);color:var(--deep)}

.ambient{position:fixed;inset:0;overflow:hidden;pointer-events:none;z-index:-1}
.ambient span{position:absolute;width:1px;height:30vh;background:linear-gradient(transparent,rgba(53,198,244,.45),transparent);transform:rotate(35deg);animation:drift 12s linear infinite}
.ambient span:nth-child(1){left:12%;top:-20%;animation-delay:-2s}.ambient span:nth-child(2){left:66%;top:15%;animation-delay:-7s}.ambient span:nth-child(3){left:88%;top:55%;animation-delay:-4s}
@keyframes drift{to{transform:translate3d(42vw,120vh,0) rotate(35deg)}}

.site-header{
  width:min(1480px,calc(100% - 80px));height:105px;margin:auto;
  display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid var(--line);position:relative;z-index:5;
}
.brand{display:flex;align-items:center;gap:14px}
.brand-mark{width:45px;height:45px;display:grid;place-items:center;border:1px solid rgba(119,218,255,.55);border-radius:50%;font:700 15px var(--tech);letter-spacing:.05em;box-shadow:inset 0 0 20px rgba(40,182,255,.16)}
.brand-copy{display:grid;line-height:1.15}.brand-copy b{font-size:15px;letter-spacing:.2em}.brand-copy small{font-size:11px;color:var(--muted);letter-spacing:.08em;margin-top:6px}
.header-cta{font-weight:700;font-size:14px;letter-spacing:.12em;display:flex;align-items:center;gap:16px;transition:.25s}
.header-cta span{width:40px;height:40px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--cyan)}
.header-cta:hover{color:var(--cyan)}

main{width:min(1480px,calc(100% - 80px));margin:auto}
/* HERO */
.hero{min-height:790px;padding:84px 0 105px;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(430px,.85fr);gap:clamp(50px,7vw,120px);align-items:center;position:relative}
.hero::before{content:"";position:absolute;left:-50vw;right:-50vw;bottom:0;border-bottom:1px solid var(--line)}
.hero::after{content:"MC / NSYSU";position:absolute;right:-22px;top:42%;font:600 10px var(--tech);letter-spacing:.3em;color:#7093b8;transform:rotate(90deg)}
.hero-copy{position:relative;z-index:2}
.eyebrow,.section-kicker{font:600 11px var(--tech);letter-spacing:.24em;color:#8fc9f3}
.live-dot{width:7px;height:7px;border-radius:50%;display:inline-block;background:var(--cyan);margin-right:12px;box-shadow:0 0 0 7px rgba(53,198,244,.08),0 0 20px var(--cyan);animation:pulse 2s ease infinite}
@keyframes pulse{50%{box-shadow:0 0 0 11px rgba(53,198,244,0),0 0 26px var(--cyan)}}
.series{font-size:15px;letter-spacing:.28em;color:#b2c8de;margin:31px 0 16px}
h1{font-size:clamp(58px,6.1vw,96px);line-height:1.01;letter-spacing:-.07em;margin:0;font-weight:900}
h1 em{font-size:.35em;font-style:normal;color:#77a8d5;vertical-align:middle;letter-spacing:0;margin-left:.18em}
h1 strong{font:700 .85em var(--display);color:var(--yellow);position:relative}
h1 strong::after{content:"";position:absolute;height:6px;background:linear-gradient(90deg,var(--yellow),transparent);left:0;right:-45px;bottom:-5px;transform:skewX(-25deg);opacity:.75}
.hero-lede{max-width:570px;color:#a7bfd5;font-size:16px;line-height:1.9;margin:37px 0 42px}
.event-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);max-width:730px}
.event-item{display:flex;gap:15px;padding:24px 16px 8px 0;min-width:0}
.event-item+.event-item{border-left:1px solid var(--line);padding-left:22px}
.event-no{font:500 9px var(--tech);color:var(--cyan);padding-top:5px}
.event-item div{min-width:0}.event-item small{display:block;color:#6289b0;font:600 9px var(--tech);letter-spacing:.18em;margin-bottom:8px}
.event-item b{font:600 clamp(13px,1.3vw,18px) var(--tech);white-space:nowrap}.event-item p{color:#87a9c9;font-size:11px;margin:6px 0 0}

.poster-card{margin:0;position:relative}
.poster-frame{padding:12px;border:1px solid var(--line);background:linear-gradient(145deg,rgba(18,103,176,.32),rgba(2,28,61,.72));box-shadow:0 36px 90px rgba(0,8,28,.38);clip-path:polygon(0 0,100% 0,100% 96%,94% 100%,0 100%)}
.poster-frame img{width:100%;height:auto;display:block;filter:saturate(.92) contrast(1.02)}
.poster-card figcaption{display:flex;justify-content:space-between;align-items:center;margin-top:15px;padding:0 2px;color:#789cbd;font-size:11px;letter-spacing:.1em}
.poster-card figcaption span{font:600 9px var(--tech);letter-spacing:.22em;color:var(--cyan)}.poster-card figcaption b{font-weight:500}

/* ABOUT */
.about{padding:125px 0;display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(70px,10vw,160px);position:relative;border-bottom:1px solid var(--line)}
.about::before{content:"";position:absolute;left:-50vw;right:-50vw;top:0;border-top:1px solid var(--line)}
.about-heading{position:relative}.about-index{font:500 9px var(--tech);letter-spacing:.2em;color:#597fa2;margin:23px 0 52px}
.about-heading h2{font-size:clamp(38px,4.2vw,66px);line-height:1.27;letter-spacing:-.055em;margin:0}.about-heading h2 span{display:inline-block;color:var(--yellow);position:relative}.about-heading h2 span::after{content:"";height:3px;background:linear-gradient(90deg,var(--yellow),transparent);position:absolute;left:0;right:0;bottom:-8px}
.about-content{padding-top:47px}.about-lead{font-size:clamp(20px,2vw,28px);font-weight:600;line-height:1.65;color:#d7e9f8;margin:0 0 28px;letter-spacing:.01em}.about-content>p:not(.about-lead){color:#91acc5;font-size:14px;line-height:2;margin:0}
.takeaways{margin-top:48px;border-top:1px solid var(--line)}.takeaways article{display:grid;grid-template-columns:44px 1fr;gap:12px;padding:24px 0;border-bottom:1px solid var(--line)}.takeaways article>span{font:500 9px var(--tech);color:var(--cyan);padding-top:5px}.takeaways h3{font-size:15px;letter-spacing:.09em;margin:0 0 7px}.takeaways p{font-size:12px;color:#7d9dbc;margin:0;line-height:1.7}
/* FORM */
.registration{padding:130px 0;display:grid;grid-template-columns:minmax(260px,.6fr) minmax(0,1.4fr);gap:clamp(60px,9vw,150px);position:relative}
.registration::before{content:"02";position:absolute;left:-20px;top:100px;font:700 210px/1 var(--tech);color:rgba(65,162,232,.035);pointer-events:none}
.form-intro{position:sticky;top:50px;align-self:start;padding-top:16px}
.form-intro h2{font-size:clamp(42px,4vw,68px);line-height:1.18;letter-spacing:-.055em;margin:20px 0 28px}
.form-intro h2 i{font-style:normal;color:var(--yellow)}
.form-intro>p{font-size:14px;line-height:1.9;color:#8daac6}.form-intro>p b{color:var(--yellow)}
.status-line{display:flex;align-items:center;gap:13px;margin-top:52px}.status-line>span{width:28px;height:1px;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
.status-line p{margin:0;font-size:11px;color:#8daac6;letter-spacing:.12em}.status-line b{font:600 10px var(--tech);color:var(--cyan);margin-right:10px}
.form-shell{padding:44px 50px 50px;background:linear-gradient(145deg,rgba(8,49,96,.82),rgba(4,31,67,.7));border:1px solid var(--line);box-shadow:0 35px 90px rgba(0,8,28,.3);position:relative;backdrop-filter:blur(14px)}
.form-shell::before,.form-shell::after{content:"";position:absolute;width:32px;height:32px;pointer-events:none}.form-shell::before{top:-1px;left:-1px;border-top:2px solid var(--cyan);border-left:2px solid var(--cyan)}.form-shell::after{bottom:-1px;right:-1px;border-bottom:2px solid #176fcc;border-right:2px solid #176fcc}
.form-progress{display:flex;gap:22px;align-items:center;margin-bottom:42px}.form-progress>div{height:2px;background:rgba(255,255,255,.1);flex:1;overflow:hidden}.form-progress>div span{height:100%;width:0;display:block;background:linear-gradient(90deg,var(--blue),var(--cyan));box-shadow:0 0 12px var(--cyan);transition:width .35s ease}.form-progress p{margin:0;color:#7899b9;font:500 9px var(--tech);letter-spacing:.14em}.form-progress b{color:var(--cyan);font-size:12px}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px 28px}.field{display:block;position:relative}.field-wide{grid-column:1/-1}.field>span{display:flex;justify-content:space-between;font-size:13px;font-weight:600;color:#c4d8eb;margin-bottom:12px;letter-spacing:.04em}.field>span b,.consent b{color:var(--yellow)}.field>span em{font-style:normal;font-size:10px;font-weight:400;color:#7194b7}
.field input,.field select,.field textarea{width:100%;border:0;border-bottom:1px solid #355b81;background:rgba(1,20,46,.3);border-radius:0;color:#fff;padding:15px 13px;outline:none;transition:border-color .2s,background .2s,box-shadow .2s}
.field textarea{resize:vertical;min-height:96px}.field input::placeholder,.field textarea::placeholder{color:#55799c}.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#6c9cc7 50%),linear-gradient(135deg,#6c9cc7 50%,transparent 50%);background-position:calc(100% - 19px) 51%,calc(100% - 14px) 51%;background-size:5px 5px;background-repeat:no-repeat}.field select option{background:#082c55}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);background:rgba(6,58,108,.36);box-shadow:0 7px 15px -13px var(--cyan)}
.field.invalid input,.field.invalid select{border-color:#ff8d79}.error{display:none;color:#ff9c8c;font-size:10px;margin-top:7px}.field.invalid .error{display:block}
.counter{position:absolute;right:7px;bottom:7px;color:#52799c;font:500 9px var(--tech)}
.consent{display:flex;align-items:flex-start;gap:12px;margin:36px 0 0;color:#8aa9c6;font-size:11px;line-height:1.7;cursor:pointer}.consent input{position:absolute;opacity:0}.checkmark{width:18px;height:18px;flex:0 0 18px;border:1px solid #497399;margin-top:1px;position:relative;transition:.2s}.consent input:checked+.checkmark{border-color:var(--cyan);background:var(--cyan)}.consent input:checked+.checkmark::after{content:"";position:absolute;left:5px;top:2px;width:4px;height:8px;border:solid #00244e;border-width:0 2px 2px 0;transform:rotate(45deg)}.consent input:focus-visible+.checkmark{outline:2px solid #fff;outline-offset:3px}
.consent-error{display:none;color:#ff9c8c;font-size:10px;margin:8px 0 0 30px}.consent-error.show{display:block}
.submit-btn{width:100%;height:68px;margin-top:32px;border:0;background:linear-gradient(95deg,#0860c4,#0a8fdf);display:flex;justify-content:space-between;align-items:center;padding:0 13px 0 28px;font-size:14px;font-weight:700;letter-spacing:.16em;cursor:pointer;position:relative;overflow:hidden;transition:transform .2s,box-shadow .2s}
.submit-btn::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,transparent 25%,rgba(255,255,255,.22),transparent 75%);transform:translateX(-110%);transition:transform .55s}.submit-btn:hover::before{transform:translateX(110%)}.submit-btn:hover{transform:translateY(-2px);box-shadow:0 18px 35px rgba(5,111,208,.25)}.submit-btn:active{transform:translateY(0)}.submit-btn i{font-style:normal;width:44px;height:44px;display:grid;place-items:center;background:#fff;color:#06498f;font-size:18px}
.form-note{text-align:center;color:#5f82a5;font-size:10px;line-height:1.6;margin:17px 0 0}
/* FOOTER + DIALOG */
footer{width:min(1480px,calc(100% - 80px));margin:auto;padding:40px 0 48px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:flex-end;color:#6485a5}
footer p{font:500 9px/1.8 var(--tech);letter-spacing:.14em;margin:0;text-transform:uppercase}footer p:last-child{font-family:var(--display);font-size:11px;letter-spacing:.15em}footer span{margin-left:15px;font-family:var(--tech)}
dialog{width:min(530px,calc(100% - 32px));border:1px solid rgba(95,200,255,.35);padding:54px;background:linear-gradient(145deg,#073568,#021d3d);color:#fff;box-shadow:0 40px 100px #0009;text-align:center}dialog::backdrop{background:rgba(0,13,34,.82);backdrop-filter:blur(8px)}
.dialog-close{position:absolute;right:16px;top:12px;border:0;background:transparent;font-size:28px;color:#7fa3c4;cursor:pointer}.success-icon{width:84px;height:84px;border:1px solid rgba(53,198,244,.45);border-radius:50%;display:grid;place-items:center;margin:0 auto 29px;box-shadow:inset 0 0 25px rgba(53,198,244,.1),0 0 35px rgba(53,198,244,.08)}.success-icon span{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:var(--cyan);color:#00325e;font-size:24px;font-weight:900}dialog h2{font-size:32px;margin:13px 0 18px}dialog>p{color:#9dbbd6;line-height:1.8;font-size:13px}dialog>p b{color:#fff}.dialog-primary{border:0;background:#087ed5;padding:14px 40px;margin-top:18px;font-size:13px;font-weight:700;cursor:pointer}

/* RESPONSIVE */
@media (max-width:1050px){
  .site-header,main,footer{width:min(100% - 48px,900px)}
  .hero{grid-template-columns:1fr .8fr;gap:40px;min-height:auto}.event-grid{grid-template-columns:1fr 1fr}.event-item:nth-child(3){display:none}
  .about{grid-template-columns:1fr;gap:35px}.about-index{margin-bottom:30px}.about-content{padding-top:0}.about-lead{max-width:760px}
  .registration{grid-template-columns:1fr;gap:45px}.form-intro{position:static;display:grid;grid-template-columns:1fr 1fr;align-items:end}.form-intro .section-kicker,.form-intro .status-line{grid-column:1/-1}.form-intro h2{margin-bottom:0}.form-intro>p{text-align:right}.status-line{margin-top:28px}
}
@media (max-width:760px){
  .site-header,main,footer{width:calc(100% - 36px)}.site-header{height:82px}.brand-copy small{display:none}.header-cta{font-size:0;gap:0}.header-cta span{font-size:15px}
  .hero{display:flex;flex-direction:column;padding:58px 0 75px;gap:52px;align-items:stretch}.hero::after{display:none}.series{margin-top:24px}h1{font-size:clamp(49px,14vw,72px)}.hero-lede{font-size:14px;margin:30px 0}.event-grid{grid-template-columns:1fr}.event-item:nth-child(2){border-left:0}.event-item:nth-child(3){display:flex;border-left:0}.poster-card{order:2}.poster-frame{padding:8px}
  .about{padding:85px 0;gap:30px}.about-index{margin:20px 0 25px}.about-heading h2{font-size:39px}.about-content{padding-top:0}.about-lead{font-size:19px}.takeaways{margin-top:35px}
  .registration{padding:85px 0}.form-intro{display:block}.form-intro>p{text-align:left}.form-shell{padding:34px 24px 32px}.field-grid{grid-template-columns:1fr;gap:27px}.field-wide{grid-column:auto}.form-progress{margin-bottom:34px}.submit-btn{height:62px}.form-note{text-align:left}
  footer{padding-bottom:35px;align-items:flex-start}footer p:first-child{display:none}
}
@media (max-width:420px){
  .brand-copy b{font-size:13px;letter-spacing:.12em}.poster-card figcaption{font-size:10px}.form-shell{margin-left:-8px;margin-right:-8px}dialog{padding:45px 24px}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}