:root{
  --ink:#17191B; --mid:#565A52; --faint:#989C92; --line:#E7E9E2; --line2:#D3D6CC;
  --bg:#FFFFFF; --soft:#F6F7F3; --green:#92B447; --deep:#6E8F2B; --dark:#151712; --gold:#FFD700;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{font-family:"Noto Sans TC","Microsoft JhengHei",sans-serif;background:var(--bg);color:var(--ink);
  font-weight:300;line-height:1.85;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--deep);outline-offset:3px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.wrap{max-width:1200px;margin:0 auto;padding:0 44px}
@media(max-width:760px){.wrap{padding:0 20px}}

nav{position:sticky;top:0;z-index:300;background:rgba(255,255,255,.95);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);padding:15px 0}
nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:11px}
.logo img.wave{height:24px}.logo img.word{height:16px}
nav ul{list-style:none;display:flex;gap:30px}
nav ul a{font-size:13.5px;letter-spacing:1px;color:var(--mid);font-weight:400;transition:color .2s}
nav ul a:hover{color:var(--ink)}
nav ul a.on{color:var(--ink);font-weight:500;border-bottom:2px solid var(--green);padding-bottom:3px}
.btn{display:inline-block;background:var(--ink);color:#fff;padding:12px 28px;font-size:12px;
  letter-spacing:2.5px;font-weight:500;transition:background .25s}
.btn:hover{background:var(--deep)}
.btn.big{padding:16px 42px;font-size:12.5px}
.btn.green{background:var(--deep)}.btn.green:hover{background:var(--ink)}
@media(max-width:1080px){nav ul{display:none}}
.link{font-size:13px;letter-spacing:2px;border-bottom:1px solid var(--line2);padding-bottom:5px;
  font-weight:400;transition:border-color .25s}
.link:hover{border-color:var(--ink)}

.crumb{padding:22px 0 0;font-size:12px;color:var(--faint);letter-spacing:1px}
.crumb a:hover{color:var(--ink)}
.crumb i{font-style:normal;padding:0 7px;color:var(--line2)}

section{padding:104px 0;border-bottom:1px solid var(--line)}
.eyebrow{font-size:11px;letter-spacing:6px;color:var(--deep);text-transform:uppercase;font-weight:500;margin-bottom:20px}
h2{font-size:clamp(27px,3.4vw,42px);font-weight:200;line-height:1.4;letter-spacing:-.8px;text-wrap:balance;margin-bottom:16px}
h2 strong{font-weight:600}
.lede{font-size:15.5px;color:var(--mid);max-width:62ch}
.head{margin-bottom:56px}
.prose{font-size:15px;color:var(--mid);max-width:70ch}
.prose p{margin-bottom:18px}
.prose b{color:var(--ink);font-weight:500}

/* hero */
.hero{padding:64px 0 84px;border-bottom:1px solid var(--line)}
.hero .grid{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center}
@media(max-width:900px){.hero .grid{grid-template-columns:1fr;gap:36px}}
.hero h1{font-size:clamp(30px,4.2vw,52px);font-weight:200;line-height:1.42;letter-spacing:-1px;text-wrap:balance;margin-bottom:16px}
.hero h1 strong{font-weight:600}.hero h1 em{font-style:normal;color:var(--deep);font-weight:500}
.hero .en{font-size:14px;color:var(--faint);letter-spacing:1px;margin-bottom:24px}
.hero p{font-size:16px;color:var(--mid);max-width:56ch;margin-bottom:36px}
.hero .acts{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.hero-pic{position:relative}
.hero-pic img{width:100%;height:460px;object-fit:cover}
@media(max-width:900px){.hero-pic img{height:300px}}
.hero-pic figcaption{position:absolute;left:0;bottom:0;background:rgba(21,23,18,.85);color:#fff;
  font-size:11px;letter-spacing:2px;padding:9px 16px}

/* challenges */
.four{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
@media(max-width:940px){.four{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.four{grid-template-columns:1fr}}
.four>div{padding:36px 28px 32px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.four>div:last-child{border-right:none}
@media(max-width:940px){.four>div:nth-child(2n){border-right:none}}
.four svg{width:36px;height:36px;color:var(--deep);margin-bottom:20px}
.four h3{font-size:16.5px;font-weight:500;margin-bottom:2px}
.four .en2{font-size:10px;letter-spacing:2px;color:var(--faint);text-transform:uppercase;margin-bottom:12px}
.four p{font-size:13px;color:var(--mid);line-height:1.75}

/* solve */
.solve{background:var(--soft)}
.badges{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:820px){.badges{grid-template-columns:1fr}}
.badge{background:#fff;border:1px solid var(--line);padding:32px 30px;display:flex;flex-direction:column;
  transition:transform .3s,box-shadow .3s,border-color .3s}
.badge:hover{transform:translateY(-4px);border-color:var(--ink);box-shadow:0 14px 34px rgba(0,0,0,.06)}
.badge .pair{font-size:10px;letter-spacing:2px;color:var(--deep);margin-bottom:14px;font-weight:500}
.badge h3{font-size:17px;font-weight:500;margin-bottom:10px}
.badge p{font-size:13.5px;color:var(--mid);flex:1;margin-bottom:18px}
.badge .go{font-size:10.5px;letter-spacing:2px;color:var(--deep);font-weight:500}

/* combos */
.combo{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:940px){.combo{grid-template-columns:1fr}}
.combo article{border:1px solid var(--line);padding:30px 26px;background:#fff}
.combo h3{font-size:16px;font-weight:500;margin-bottom:4px}
.combo .use{font-size:12px;color:var(--faint);margin-bottom:20px}
.stack{list-style:none;display:flex;flex-direction:column;gap:1px;background:var(--line);border:1px solid var(--line);margin-bottom:18px}
.stack li{background:#fff;padding:10px 14px;font-size:12.5px;color:var(--mid);display:flex;justify-content:space-between;gap:12px}
.stack li b{font-weight:500;color:var(--ink);font-size:11px;letter-spacing:1px;min-width:64px}
.combo .note{font-size:12px;color:var(--faint);line-height:1.7}

/* devices */
.apps{background:var(--soft)}
.appgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:26px}
@media(max-width:940px){.appgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.appgrid{grid-template-columns:1fr}}
.app{background:#fff;border:1px solid var(--line);transition:transform .3s,box-shadow .3s}
.app:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(0,0,0,.06)}
.app .pic{height:110px;background:var(--soft);display:flex;align-items:center;justify-content:center;
  border-bottom:1px solid var(--line);color:var(--deep)}
.app .pic svg{width:48px;height:48px}
.app .body{padding:22px 20px 24px}
.app h3{font-size:15px;font-weight:500;margin-bottom:8px}
.app p{font-size:12.5px;color:var(--mid);line-height:1.7;margin-bottom:14px}
.app .go{font-size:10px;letter-spacing:1.8px;color:var(--deep);font-weight:500}
.also{font-size:12.5px;color:var(--faint);letter-spacing:.5px}
.also b{color:var(--mid);font-weight:500}

/* deep dive EMI */
.deep .grid{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
@media(max-width:900px){.deep .grid{grid-template-columns:1fr}}
.deep figure{border:1px solid var(--line);padding:26px;background:#fff}
.deep figcaption{font-size:11px;color:var(--faint);letter-spacing:1.5px;margin-top:12px;text-align:right}
.spec{list-style:none;border-top:1px solid var(--line);margin-top:24px}
.spec li{border-bottom:1px solid var(--line);padding:12px 4px;font-size:13.5px;color:var(--mid);
  display:flex;gap:14px}
.spec li b{min-width:150px;font-weight:500;color:var(--ink);font-size:13px}

/* bonding toggle */
.bond{background:var(--soft)}
.tgl{display:inline-flex;border:1px solid var(--line2);margin-bottom:26px}
.tgl button{border:none;background:#fff;padding:12px 30px;font-size:13px;letter-spacing:1.5px;
  font-family:inherit;cursor:pointer;color:var(--mid);transition:all .25s}
.tgl button.on{background:var(--dark);color:#fff}
.bondbox{background:#fff;border:1px solid var(--line);padding:34px;display:grid;
  grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
@media(max-width:900px){.bondbox{grid-template-columns:1fr}}
.bondbox img{width:100%}
.bondbox h3{font-size:19px;font-weight:500;margin-bottom:12px}
.bondbox p{font-size:14px;color:var(--mid);margin-bottom:16px}
.kv{display:flex;gap:34px}
.kv div b{display:block;font-size:24px;font-weight:200;font-variant-numeric:tabular-nums}
.kv div span{font-size:11px;letter-spacing:1.5px;color:var(--faint)}

/* IRUV slider */
.demo{background:var(--dark);color:#fff;border-bottom:none}
.demo .eyebrow{color:var(--green)}
.demo h2{color:#fff}.demo .lede{color:rgba(255,255,255,.62)}
.cmp{position:relative;max-width:920px;margin:0 auto;user-select:none;touch-action:none;
  border:1px solid rgba(255,255,255,.14);cursor:ew-resize;overflow:hidden}
.cmp img{width:100%;pointer-events:none}
.cmp .topimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;clip-path:inset(0 0 0 50%)}
.cmp .bar{position:absolute;top:0;bottom:0;left:50%;width:2px;background:var(--green);z-index:5}
.cmp .knob{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:6;width:44px;height:44px;
  border-radius:50%;background:var(--green);display:flex;align-items:center;justify-content:center;
  color:#141613;font-weight:700;font-size:15px;box-shadow:0 4px 18px rgba(0,0,0,.4)}
.cmp .side{position:absolute;top:14px;font-size:11px;letter-spacing:2px;z-index:4;background:rgba(0,0,0,.55);color:#fff;padding:6px 12px}
.cmp .side.l{left:14px}.cmp .side.r{right:14px}
.demo .hint{text-align:center;font-size:12px;letter-spacing:2px;color:rgba(255,255,255,.45);margin-top:18px}

/* quote */
.quote{background:var(--soft)}
.quote blockquote{max-width:820px;margin:0 auto;text-align:center}
.quote .mark{font-size:60px;line-height:1;color:var(--green);font-weight:700}
.quote p{font-size:clamp(19px,2.4vw,26px);font-weight:300;line-height:1.75;letter-spacing:.3px;margin-bottom:26px;text-wrap:balance}
.quote cite{font-style:normal;font-size:12.5px;letter-spacing:2px;color:var(--faint)}
.quote cite b{color:var(--ink);font-weight:500}

/* tech */
.tech3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:820px){.tech3{grid-template-columns:1fr}}
.tech3 a{border:1px solid var(--line);padding:28px 26px;display:block;transition:background .3s,color .3s;background:#fff}
.tech3 a:hover{background:var(--dark);color:#fff}
.tech3 a:hover p,.tech3 a:hover .t-en{color:rgba(255,255,255,.72)}
.tech3 h3{font-size:16px;font-weight:500;margin-bottom:4px}
.tech3 .t-en{font-size:10px;letter-spacing:2px;color:var(--faint);text-transform:uppercase;margin-bottom:12px}
.tech3 p{font-size:13px;color:var(--mid);line-height:1.75}

/* factory strip */
.facstrip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:44px}
@media(max-width:820px){.facstrip{grid-template-columns:1fr}}
.facstrip img{width:100%;height:220px;object-fit:cover}

/* faq */
.qs{border-top:1px solid var(--line2);max-width:860px}
details{border-bottom:1px solid var(--line2)}
summary{cursor:pointer;list-style:none;padding:22px 44px 22px 0;font-size:15.5px;font-weight:400;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:8px;top:20px;font-size:20px;font-weight:200;color:var(--deep)}
details[open] summary::after{content:"–"}
details p{padding:0 44px 24px 0;font-size:14px;color:var(--mid);max-width:70ch}

/* cta */
.cta{background:var(--dark);color:#fff;border-bottom:none;position:relative;overflow:hidden}
.cta .wave-bg{position:absolute;right:-60px;bottom:-30px;width:500px;opacity:.13;pointer-events:none}
.cta h2{color:#fff}.cta .lede{color:rgba(255,255,255,.62);margin-bottom:38px}
.more{padding:64px 0 84px}
.morehead{font-size:11px;letter-spacing:5px;color:var(--faint);text-transform:uppercase;margin-bottom:28px}
.mgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:940px){.mgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.mgrid{grid-template-columns:1fr}}
.mgrid a{background:#fff;padding:24px 20px;transition:background .25s}
.mgrid a:hover{background:var(--soft)}
.mgrid h3{font-size:14.5px;font-weight:500;margin-bottom:3px}
.mgrid span{font-size:10.5px;letter-spacing:1.5px;color:var(--faint);text-transform:uppercase;display:block;margin-bottom:10px}
.mgrid p{font-size:12px;color:var(--mid);line-height:1.65}
footer{padding:38px 0;background:var(--dark);color:rgba(255,255,255,.5)}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;align-items:center}
footer img{height:19px;opacity:.9}
.fade{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s ease}
.fade.in{opacity:1;transform:none}

/* hero svg panel */
.hero-art{background:var(--soft);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;padding:40px;height:460px}
@media(max-width:900px){.hero-art{height:320px}}
.hero-art svg{width:100%;height:100%;max-width:520px}
/* coating tabs */
.coat .tabs{display:flex;flex-wrap:wrap;gap:0;border:1px solid var(--line2);width:fit-content;margin-bottom:26px}
.coat .tabs button{border:none;background:#fff;padding:12px 24px;font-size:13px;letter-spacing:1.5px;font-family:inherit;cursor:pointer;color:var(--mid);transition:all .25s}
.coat .tabs button.on{background:var(--dark);color:#fff}
.coatbox{background:#fff;border:1px solid var(--line);padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
@media(max-width:900px){.coatbox{grid-template-columns:1fr}}
.coatbox h3{font-size:19px;font-weight:500;margin-bottom:12px}
.coatbox p{font-size:14px;color:var(--mid);margin-bottom:16px}
.coatbox .use2{font-size:12px;letter-spacing:1px;color:var(--deep);font-weight:500}
.coatbox svg{width:100%;max-width:360px;margin:0 auto;display:block}
/* ipik explorer */
.ipik{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:860px){.ipik{grid-template-columns:1fr}}
.ipik .col{background:#fff;border:1px solid var(--line);padding:30px}
.ipik h3{font-size:16px;font-weight:500;margin-bottom:16px}
.ipik input[type=range]{width:100%;accent-color:var(--deep);margin-bottom:16px}
.ipik .big{font-size:42px;font-weight:200;letter-spacing:-1px;font-variant-numeric:tabular-nums;margin-bottom:8px}
.ipik .big i{font-style:normal;color:var(--deep);font-weight:500}
.ipik .desc{font-size:13.5px;color:var(--mid);min-height:72px}
/* tap counter */
.tap{background:#fff;border:1px solid var(--line);padding:44px;text-align:center;max-width:640px;margin:0 auto}
.tap button{border:none;background:var(--deep);color:#fff;width:130px;height:130px;border-radius:50%;
  font-size:17px;letter-spacing:2px;font-family:inherit;font-weight:500;cursor:pointer;transition:transform .1s,background .2s;margin-bottom:26px}
.tap button:active{transform:scale(.94)}
.tap button:hover{background:var(--ink)}
.tap .cnt{font-size:44px;font-weight:200;font-variant-numeric:tabular-nums;letter-spacing:-1px}
.tap .lbl{font-size:12px;letter-spacing:2px;color:var(--faint);margin-top:6px}

/* params table */
.ptable{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
@media(max-width:820px){.ptable{grid-template-columns:1fr}}
.ptable div{background:#fff;padding:16px 20px;display:flex;justify-content:space-between;gap:16px;font-size:13.5px}
.ptable div b{font-weight:500;color:var(--ink);min-width:88px}
.ptable div span{color:var(--mid);text-align:right}
.pnote{font-size:12px;color:var(--faint);margin-top:16px}
/* standards */
.stds{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:820px){.stds{grid-template-columns:1fr}}
.stds article{border:1px solid var(--line);background:#fff;padding:24px 24px;border-left:3px solid var(--green)}
.stds h3{font-size:15px;font-weight:600;letter-spacing:.5px;margin-bottom:6px;font-variant-numeric:tabular-nums}
.stds p{font-size:13px;color:var(--mid);line-height:1.7}
/* scenes */
.scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.scenes{grid-template-columns:1fr}}
.scene{background:var(--dark);color:#fff;padding:30px 26px;position:relative;overflow:hidden}
.scene::after{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:var(--green)}
.scene h3{font-size:15px;font-weight:500;color:var(--green);margin-bottom:12px;letter-spacing:1px}
.scene p{font-size:13.5px;color:rgba(255,255,255,.82);line-height:1.85}
/* reads & resources */
.reads{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}
@media(max-width:860px){.reads{grid-template-columns:1fr}}
.readlist{border:1px solid var(--line);background:#fff}
.readlist a{display:flex;justify-content:space-between;gap:14px;padding:20px 24px;border-bottom:1px solid var(--line);transition:background .25s;align-items:baseline}
.readlist a:last-child{border-bottom:none}
.readlist a:hover{background:var(--soft)}
.readlist h3{font-size:14.5px;font-weight:500}
.readlist span{font-size:11px;color:var(--faint);letter-spacing:1px;white-space:nowrap}
.guide{border:1px solid var(--line);border-left:3px solid var(--green);background:var(--soft);padding:28px 26px;display:flex;flex-direction:column}
.guide h3{font-size:16px;font-weight:500;margin-bottom:10px}
.guide p{font-size:13px;color:var(--mid);flex:1;margin-bottom:18px}
.guide .btn{align-self:flex-start}

footer a{color:rgba(255,255,255,.5)} footer a:hover{color:#fff}
/* trust bar + flagship */
.trust{padding:44px 0;background:var(--soft);border-bottom:1px solid var(--line)}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
@media(max-width:820px){.trust .wrap{grid-template-columns:repeat(2,1fr);row-gap:34px}}
.t-item{text-align:center}
.t-item b{display:block;font-size:clamp(26px,3vw,38px);font-weight:200;letter-spacing:-.5px;font-variant-numeric:tabular-nums;line-height:1.25}
.t-item b i{font-style:normal;color:var(--deep);font-weight:400}
.t-item span{font-size:12px;letter-spacing:2px;color:var(--faint)}
.flag{display:inline-block;background:var(--gold);color:#000;font-size:10.5px;font-weight:700;letter-spacing:3px;padding:5px 14px;margin-bottom:18px}
.tdm{background:var(--soft)}
.layers{list-style:none;border-top:1px solid var(--line2)}
.layers li{border-bottom:1px solid var(--line2);padding:17px 10px;display:flex;gap:16px;align-items:baseline;cursor:pointer;transition:background .25s,padding-left .25s}
.layers li .no{font-size:11px;color:var(--faint);letter-spacing:1px;min-width:24px}
.layers li .nm{font-size:15.5px;font-weight:500;min-width:150px}
.layers li .ds{font-size:12.5px;color:var(--mid)}
.layers li:hover,.layers li.on{background:#fff;padding-left:20px}
.layers li:hover .no,.layers li.on .no{color:var(--deep);font-weight:700}
.tdm .grid{display:grid;grid-template-columns:1fr 1.25fr;gap:56px;align-items:center}
@media(max-width:950px){.tdm .grid{grid-template-columns:1fr}}
.tdm-pic{background:#fff;border:1px solid var(--line);padding:26px}
.tdm-pic img{width:100%}
.tdm-cap{font-size:11px;color:var(--faint);letter-spacing:1.5px;margin-top:14px;text-align:right}
/* steps */
.steps{display:grid;grid-template-columns:repeat(7,1fr);gap:0;border-top:1px solid var(--line)}
@media(max-width:980px){.steps{grid-template-columns:repeat(4,1fr)!important}}
@media(max-width:640px){.steps{grid-template-columns:repeat(2,1fr)!important}}
.step{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 18px 22px;transition:background .25s;background:#fff}
.step:hover{background:var(--soft)}
.step .no{font-size:11px;color:var(--deep);letter-spacing:1.5px;font-weight:500;margin-bottom:10px}
.step h3{font-size:14.5px;font-weight:500;margin-bottom:4px}
.step span{font-size:11px;color:var(--faint);letter-spacing:1px;line-height:1.6;display:block}
.note{font-size:12.5px;color:var(--faint);margin-top:22px}
/* mobile nav */
.menu-btn{display:none;background:none;border:1px solid var(--line2);width:44px;height:40px;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.menu-btn span{display:block;width:20px;height:1.6px;background:var(--ink);transition:transform .25s,opacity .25s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}
.m-menu{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#fff;z-index:250;padding:90px 32px 32px;flex-direction:column;gap:4px;overflow:auto}
.m-menu.open{display:flex}
.m-menu a{padding:16px 4px;font-size:19px;font-weight:400;border-bottom:1px solid var(--line);letter-spacing:1px}
.m-menu a.cta{background:var(--dark);color:#fff;text-align:center;margin-top:22px;border:none;font-size:13px;letter-spacing:2.5px;padding:16px}
.m-menu .sub{font-size:12px;color:var(--faint);letter-spacing:2px;margin-top:26px;padding-bottom:6px}
@media(max-width:1080px){.menu-btn{display:flex}.nav-cta{display:none}}
body.menu-open{overflow:hidden}