:root{
  --dark:#152029;--dark2:#1d2b36;--mid:#33424a;--light:#f4f6f8;--white:#fff;
  --teal:#12b5a5;--orange:#e39a3b;--blue:#4a90d9;--purple:#8f72d8;--gold:#e8bb3c;--pink:#e0607e;
  --text:#1c2a33;--muted:#5d6d77;--line:#dde3e8;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans TC","PingFang HK","PingFang TC","Microsoft JhengHei",sans-serif;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}
img,video,svg{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.15;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.3rem,5.2vw,4rem);font-weight:800}
h2{font-size:clamp(1.7rem,3.2vw,2.5rem);font-weight:800}
h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1em}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--teal);margin-bottom:14px}
.lead{font-size:1.15rem;color:var(--muted);max-width:760px}
.skip{position:absolute;left:-999px;top:0;background:var(--teal);color:#06211e;padding:10px 16px;z-index:100}
.skip:focus{left:8px;top:8px}

/* header */
.hdr{position:sticky;top:0;z-index:50;background:rgba(21,32,41,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.hdr .wrap{display:flex;align-items:center;gap:20px;height:68px}
.brand img{height:34px;width:auto}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:800;letter-spacing:.04em;font-size:1.05rem}
.brand b{color:var(--teal);font-weight:800}
.nav{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav a{color:#c9d3da;text-decoration:none;font-size:.92rem;padding:8px 11px;border-radius:8px}
.nav a:hover,.nav a[aria-current=page]{color:#fff;background:rgba(255,255,255,.08)}
.nav .lang{border:1px solid rgba(255,255,255,.25);margin-left:8px}
.burger{display:none;margin-left:auto;background:none;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:8px;padding:8px 12px;font:inherit;cursor:pointer}
@media(max-width:1020px){
  .burger{display:block}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--dark);flex-direction:column;align-items:stretch;padding:12px 24px 20px;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav.open{display:flex}
  .nav .lang{margin:8px 0 0;text-align:center}
}

/* buttons */
.btn{display:inline-block;padding:14px 26px;border-radius:10px;font-weight:700;text-decoration:none;font-size:1rem;transition:transform .15s,box-shadow .15s,background .15s;border:2px solid transparent;cursor:pointer;font-family:inherit}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--teal);color:#06211e}
.btn-primary:hover{box-shadow:0 8px 24px rgba(18,181,165,.35)}
.btn-ghost{border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-dark{background:var(--dark);color:#fff}
.btns{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}

/* sections */
section{padding:88px 0}
.dark{background:var(--dark);color:#e8eef2}
.dark .lead,.dark p{color:#aebac3}
.dark h1,.dark h2,.dark h3{color:#fff}
.alt{background:var(--light)}
.sec-head{margin-bottom:44px}

/* hero */
.hero{position:relative;overflow:hidden;padding:84px 0 96px;background:radial-gradient(1200px 600px at 80% 20%,#1d3a40 0%,var(--dark) 60%)}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;position:relative;z-index:2}
.hero h1{color:#fff}
.hero .lead{color:#b6c3cb}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.28;z-index:1}
.hero-tag{margin-top:34px;color:#8ea0aa;font-size:.95rem}
.loop{width:100%;max-width:470px;margin:0 auto}
@media(max-width:900px){.hero .wrap{grid-template-columns:1fr}.loop{max-width:340px}}

/* loop animation */
.ring{fill:none;stroke:rgba(18,181,165,.28);stroke-width:1.2}
.ring.r2{animation:pulse 6s ease-in-out infinite}
.ring.r3{animation:pulse 6s ease-in-out 2s infinite}
@keyframes pulse{0%,100%{opacity:.4}50%{opacity:1}}
.arc-change{fill:none;stroke:var(--teal);stroke-width:6;stroke-linecap:round}
.arc-run{fill:none;stroke:var(--orange);stroke-width:6;stroke-linecap:round}
.orbit{transform-origin:200px 200px;transform-box:view-box;animation:spin 14s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.node{fill:var(--dark);stroke-width:3}
.lbl{font-size:12.5px;fill:#c5d0d7;font-family:var(--font)}
.core-t{font-size:22px;font-weight:800;fill:#fff;text-anchor:middle;font-family:var(--font)}
.core-s{font-size:12px;fill:#93a4ae;text-anchor:middle;letter-spacing:.14em;font-family:var(--font)}

/* cards */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:1000px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:26px;border-top:4px solid var(--teal);transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(21,32,41,.1)}
.card p{color:var(--muted);margin:0}
.card h3{margin-bottom:10px}
.dark .card{background:var(--dark2);border-color:rgba(255,255,255,.08)}
.dark .card p{color:#9fb0ba}
.c-teal{border-top-color:var(--teal)}.c-orange{border-top-color:var(--orange)}.c-blue{border-top-color:var(--blue)}
.c-purple{border-top-color:var(--purple)}.c-gold{border-top-color:var(--gold)}.c-pink{border-top-color:var(--pink)}
.num{font-weight:800;color:var(--teal);font-size:.85rem;letter-spacing:.1em;margin-bottom:8px;display:block}
a.card{text-decoration:none;color:inherit;display:block}

/* split columns */
.split{display:grid;grid-template-columns:1fr 1fr;gap:26px}
@media(max-width:800px){.split{grid-template-columns:1fr}}
.panel{border-radius:14px;padding:32px;background:var(--light);border-top:6px solid var(--teal)}
.panel.run{border-top-color:var(--orange)}
.panel h3{font-size:1.5rem}
.panel .tag{font-size:.78rem;font-weight:700;letter-spacing:.12em;color:var(--teal);text-transform:uppercase;margin-bottom:6px}
.panel.run .tag{color:var(--orange)}
.panel ul{list-style:none;padding:0;margin:18px 0 0}
.panel li{padding:12px 0;border-top:1px solid var(--line)}
.panel li b{display:block}
.panel li span{color:var(--muted);font-size:.95rem}
.callout{border-left:5px solid var(--teal);background:var(--light);padding:20px 24px;border-radius:0 12px 12px 0;margin-top:30px;font-weight:600}
.dark .callout{background:var(--dark2);color:#dfe8ed}

/* tables */
.tbl-wrap{overflow-x:auto;border-radius:12px;border:1px solid var(--line)}
table{border-collapse:collapse;width:100%;min-width:640px;background:#fff;font-size:.95rem}
th{background:var(--dark);color:#fff;text-align:left;padding:13px 16px;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase}
td{padding:14px 16px;border-top:1px solid var(--line);vertical-align:top}
tr:nth-child(even) td{background:#f8fafb}
td.k{font-weight:700}
.vs td.old{color:var(--muted)}
.vs td.new{background:var(--dark)!important;color:#fff;font-weight:500}

/* media */
.media{border-radius:14px;overflow:hidden;aspect-ratio:16/9;background:linear-gradient(135deg,#1d3a40,#152029)}
.media img,.media video{width:100%;height:100%;object-fit:cover}
.ph{width:100%;height:100%;background:radial-gradient(circle at 30% 30%,rgba(18,181,165,.5),transparent 55%),radial-gradient(circle at 75% 70%,rgba(227,154,59,.35),transparent 50%),#152029}
.mcard .media{margin-bottom:16px}
.mcard small{color:var(--muted)}

/* platforms */
details.plat{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;border-left:6px solid var(--teal)}
details.plat summary{cursor:pointer;list-style:none;padding:20px 24px;display:flex;gap:16px;align-items:center;justify-content:space-between}
details.plat summary::-webkit-details-marker{display:none}
details.plat summary h3{margin:0}
details.plat summary small{display:block;color:var(--muted);font-weight:400;margin-top:4px}
details.plat summary:after{content:"+";font-size:1.6rem;color:var(--teal);font-weight:300}
details.plat[open] summary:after{content:"\2212"}
.plat-body{padding:0 24px 26px;display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media(max-width:800px){.plat-body{grid-template-columns:1fr}}
.plat-body h4{margin:0 0 8px;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.plat-body ul{margin:0;padding-left:18px}
.plat-body li{margin-bottom:6px}
.pill{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:3px 10px;border-radius:99px;background:rgba(18,181,165,.14);color:#0b7a70;margin-bottom:6px}
.dc-teal{border-left-color:var(--teal)}.dc-orange{border-left-color:var(--orange)}.dc-blue{border-left-color:var(--blue)}.dc-purple{border-left-color:var(--purple)}.dc-gold{border-left-color:var(--gold)}.dc-pink{border-left-color:var(--pink)}

/* form */
form.contact{display:grid;gap:16px;max-width:640px}
label{font-weight:600;font-size:.92rem;display:grid;gap:6px}
input,select,textarea{font:inherit;padding:13px 14px;border:1px solid #c7d0d6;border-radius:10px;background:#fff;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--teal);border-color:var(--teal)}
textarea{min-height:140px;resize:vertical}
.hp{position:absolute;left:-9999px}
.note{font-size:.85rem;color:var(--muted)}
.draft{background:#fff7e6;border:1px solid #f0d49a;border-radius:10px;padding:14px 18px;margin-bottom:28px;color:#6b4a00}

/* footer */
.ftr{background:#0f171e;color:#8fa0aa;padding:56px 0 36px;font-size:.92rem}
.ftr .wrap{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
.ftr h4{color:#fff;margin:0 0 12px;font-size:.9rem}
.ftr a{text-decoration:none;display:block;padding:3px 0}
.ftr a:hover{color:#fff}
.ftr .legal{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.08);padding-top:22px;font-size:.82rem}
@media(max-width:800px){.ftr .wrap{grid-template-columns:1fr}}

/* reveal */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .orbit,.ring{animation:none}
  html{scroll-behavior:auto}
  .btn:hover,.card:hover{transform:none}
}

/* ---------- v2: page heroes, motion, components ---------- */
@keyframes rise{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
@keyframes drift{0%{background-position:0% 50%}100%{background-position:200% 50%}}
.phero{position:relative;overflow:hidden;background:var(--dark);min-height:54vh;display:flex;align-items:flex-end;padding:120px 0 64px}
.phero-bg{position:absolute;left:0;top:-10%;width:100%;height:120%;object-fit:cover;opacity:.5;transform:translate3d(0,var(--py,0px),0);will-change:transform}
.phero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(21,32,41,.94) 8%,rgba(21,32,41,.55) 60%,rgba(21,32,41,.25)),linear-gradient(0deg,rgba(21,32,41,.9),transparent 55%)}
.phero .wrap{position:relative;z-index:2;width:100%}
.phero .eyebrow,.phero h1,.phero .lead{animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
.phero h1{color:#fff;max-width:880px;animation-delay:.12s}
.phero .lead{color:#c5d1d8;max-width:680px;animation-delay:.24s}
.phero .bar{height:4px;width:0;background:linear-gradient(90deg,var(--teal),var(--orange),var(--teal));background-size:200% 100%;border-radius:4px;margin-top:26px;animation:grow 1.2s .5s forwards,drift 4s linear infinite}
@keyframes grow{to{width:140px}}

.marquee{background:#0f171e;border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06);overflow:hidden;padding:18px 0}
.mq-track{display:flex;gap:48px;width:max-content;animation:mq 38s linear infinite}
.marquee:hover .mq-track{animation-play-state:paused}
.mq-track span{color:#8ea0aa;font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:.8rem;white-space:nowrap}
.mq-track span:before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--teal);margin-right:48px;vertical-align:middle}
@keyframes mq{to{transform:translateX(-50%)}}

.stats{background:var(--white);padding:64px 0 8px}
.stat{text-align:left;border-left:4px solid var(--teal);padding:4px 0 4px 18px}
.stat:nth-child(2){border-color:var(--orange)}.stat:nth-child(3){border-color:var(--blue)}.stat:nth-child(4){border-color:var(--purple)}
.stat b{display:block;font-size:clamp(2.4rem,5vw,3.6rem);font-weight:800;line-height:1;color:var(--dark)}
.stat span{color:var(--muted);font-size:.95rem}

.tl{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:18px;margin-top:10px}
.tl:before{content:"";position:absolute;left:4%;right:4%;top:23px;height:3px;background:rgba(255,255,255,.12)}
.tl:after{content:"";position:absolute;left:4%;top:23px;height:3px;width:0;background:linear-gradient(90deg,var(--teal),var(--orange));transition:width 2.2s ease .3s}
.tl.in:after{width:92%}
.tl .st{position:relative;padding-top:56px}
.tl .st i{position:absolute;top:8px;left:0;width:32px;height:32px;border-radius:50%;background:var(--dark);border:3px solid var(--teal);display:grid;place-items:center;font-style:normal;font-weight:800;font-size:.8rem;color:#fff;z-index:2;transform:scale(.6);opacity:0;transition:transform .5s ease,opacity .5s ease}
.tl.in .st i{transform:none;opacity:1}
.tl.in .st:nth-child(1) i{transition-delay:.2s}.tl.in .st:nth-child(2) i{transition-delay:.55s}.tl.in .st:nth-child(3) i{transition-delay:.9s}.tl.in .st:nth-child(4) i{transition-delay:1.25s}.tl.in .st:nth-child(5) i{transition-delay:1.6s}.tl.in .st:nth-child(6) i{transition-delay:1.95s}
.tl .st:nth-child(n+5) i{border-color:var(--orange)}
.tl h3{font-size:1.05rem;margin-bottom:6px}
.tl p{font-size:.92rem;margin:0}
@media(max-width:900px){.tl{grid-template-columns:1fr;gap:6px}.tl:before,.tl:after{left:15px;right:auto;top:10px;bottom:10px;width:3px;height:auto}.tl:after{height:0;transition:height 2.2s ease .3s;width:3px}.tl.in:after{height:calc(100% - 20px);width:3px}.tl .st{padding:0 0 22px 56px}.tl .st i{top:0}}

.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.tabs button{font:inherit;font-weight:600;padding:10px 18px;border-radius:99px;border:1px solid #c7d0d6;background:#fff;color:var(--text);cursor:pointer;transition:all .2s}
.tabs button:hover{border-color:var(--teal)}
.tabs button[aria-pressed=true]{background:var(--dark);border-color:var(--dark);color:#fff}
details.plat.hide{display:none}

.band{position:relative;overflow:hidden;color:#fff;padding:110px 0;background:var(--dark)}
.band .phero-bg{opacity:.4}
.band:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(21,32,41,.92),rgba(21,32,41,.5))}
.band .wrap{position:relative;z-index:2}
.band h2{color:#fff;max-width:760px;font-size:clamp(1.9rem,4vw,3rem)}
.band p{color:#c5d1d8;max-width:640px;font-size:1.1rem}

.card,.panel{position:relative;overflow:hidden}
.card:before{content:"";position:absolute;inset:0;opacity:0;transition:opacity .3s;background:radial-gradient(360px circle at var(--mx,50%) var(--my,0%),rgba(18,181,165,.13),transparent 60%);pointer-events:none}
.card:hover:before{opacity:1}
.btn-primary{position:relative;overflow:hidden}
.btn-primary:after{content:"";position:absolute;top:0;left:-70%;width:50%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);transform:skewX(-20deg);transition:left .6s}
.btn-primary:hover:after{left:130%}
.grid>.rv:nth-child(2){transition-delay:.08s}.grid>.rv:nth-child(3){transition-delay:.16s}.grid>.rv:nth-child(4){transition-delay:.24s}.grid>.rv:nth-child(5){transition-delay:.32s}.grid>.rv:nth-child(6){transition-delay:.4s}
.media{position:relative}
.media img,.media video{transition:transform 1.2s ease}
.mcard:hover .media img{transform:scale(1.06)}
@media(prefers-reduced-motion:reduce){
  .phero .eyebrow,.phero h1,.phero .lead{animation:none}
  .phero .bar{animation:none;width:140px}
  .mq-track{animation:none}
  .tl:after{transition:none;width:92%}.tl .st i{transition:none;transform:none;opacity:1}
  .phero-bg{transform:none}
}

/* 404 */
.phero.nf{min-height:72vh;align-items:center;background:radial-gradient(900px 500px at 75% 30%,#1d3a40 0%,var(--dark) 65%)}
.phero.nf .eyebrow{font-size:5rem;letter-spacing:.05em;color:rgba(18,181,165,.35);margin-bottom:0;line-height:1}

/* contrast: darker teal and orange for small text on light backgrounds (WCAG AA) */
.eyebrow,.num,.panel .tag{color:#0b7f74}
.panel.run .tag{color:#a35d0c}
.dark .eyebrow,.dark .num,.hero .eyebrow,.phero .eyebrow,.band .eyebrow{color:var(--teal)}
.phero.nf .eyebrow{color:rgba(18,181,165,.35)}

/* icons */
.ico{display:inline-grid;place-items:center;width:46px;height:46px;border-radius:12px;margin-bottom:14px;color:#0b7f74;background:rgba(18,181,165,.12);transition:transform .3s ease}
.card:hover .ico{transform:translateY(-2px) rotate(-4deg)}
.c-orange .ico{color:#a35d0c;background:rgba(227,154,59,.15)}.c-blue .ico{color:#2f6fb0;background:rgba(74,144,217,.14)}
.c-purple .ico{color:#6a4fb8;background:rgba(143,114,216,.15)}.c-gold .ico{color:#8a6a07;background:rgba(232,187,60,.18)}.c-pink .ico{color:#b23d5b;background:rgba(224,96,126,.14)}
.dark .ico{color:var(--teal);background:rgba(18,181,165,.14)}.dark .c-orange .ico{color:var(--orange)}.dark .c-blue .ico{color:var(--blue)}
.dark .c-purple .ico{color:var(--purple)}.dark .c-gold .ico{color:var(--gold)}.dark .c-pink .ico{color:var(--pink)}
details.plat summary{justify-content:flex-start}
details.plat summary .sum-t{flex:1}
details.plat summary .ico{margin:0;flex:none}
.dc-orange summary .ico{color:#a35d0c;background:rgba(227,154,59,.15)}.dc-blue summary .ico{color:#2f6fb0;background:rgba(74,144,217,.14)}
.dc-purple summary .ico{color:#6a4fb8;background:rgba(143,114,216,.15)}.dc-gold summary .ico{color:#8a6a07;background:rgba(232,187,60,.18)}.dc-pink summary .ico{color:#b23d5b;background:rgba(224,96,126,.14)}

/* contact layout */
.cgrid{display:grid;grid-template-columns:1.35fr .9fr;gap:40px;align-items:start}
.cgrid form.contact{max-width:none;background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px}
.next{background:var(--dark);color:#dfe8ed;border-radius:16px;padding:30px;position:sticky;top:96px}
.next h3{color:#fff}
.next ol{list-style:none;counter-reset:n;padding:0;margin:18px 0 0}
.next li{counter-increment:n;position:relative;padding:0 0 22px 48px}
.next li:before{content:counter(n);position:absolute;left:0;top:-2px;width:32px;height:32px;border-radius:50%;border:2px solid var(--teal);display:grid;place-items:center;font-weight:800;color:#fff;font-size:.85rem}
.next li b{display:block;color:#fff}
.next li span{color:#9fb0ba;font-size:.95rem}
@media(max-width:900px){.cgrid{grid-template-columns:1fr}.next{position:static}}

/* header tightens on scroll */
.hdr{transition:box-shadow .3s,background .3s}
.hdr .wrap{transition:height .3s}
.hdr.scrolled{background:rgba(15,23,30,.97);box-shadow:0 8px 28px rgba(0,0,0,.25)}
.hdr.scrolled .wrap{height:58px}
@media(prefers-reduced-motion:reduce){.hdr,.hdr .wrap,.ico{transition:none}}
@media(max-width:1020px){.hdr.scrolled .nav{top:58px}}
.cgrid>*{min-width:0}
select,input,textarea{max-width:100%;width:100%;box-sizing:border-box}
@media(max-width:600px){.cgrid form.contact,.next{padding:22px}}