:root{
  --violet:#45349E; --deep:#372A80; --ai:#7A5CE0; --ai-2:#9d86f2; --lav:#ECE7FB;
  --ink:#17122E; --cloud:#F4F2FB; --line:#DAD5EC; --muted:#6a6580; --faint:#a7a2bd;
  --good:#1f9d6b; --good-soft:#e2f5ec; --warn:#d9820b; --warn-soft:#faefda; --crit:#d64a5e;
  --white:#ffffff; --radius:22px;
  --shadow-sm:0 1px 2px rgba(23,19,41,.05), 0 8px 22px -14px rgba(23,19,41,.30);
  --shadow:0 2px 6px rgba(23,19,41,.05), 0 30px 60px -32px rgba(87,66,165,.45);
  --sans:"Archivo","Noto Sans TC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --disp:'Bricolage Grotesque','Noto Sans TC',sans-serif;
  --grad:linear-gradient(120deg,var(--violet),var(--ai));
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
h1,h2,h3,h4{font-family:var(--disp);line-height:1.14;letter-spacing:-.015em;margin:0;font-weight:800;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;height:auto;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--deep);background:var(--lav);padding:7px 14px;border-radius:999px;}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:inherit;font-weight:700;font-size:.98rem;cursor:pointer;padding:0 24px;height:52px;border-radius:14px;border:1.5px solid transparent;transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,background .18s,color .18s;white-space:nowrap;}
.btn svg{width:18px;height:18px;}
.btn.primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px -12px rgba(87,66,165,.9);}
.btn.primary:hover{transform:translateY(-3px);box-shadow:0 20px 38px -14px rgba(87,66,165,.85);}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);}
.btn.ghost:hover{transform:translateY(-3px);border-color:var(--ai);color:var(--deep);}
.btn.sm{height:44px;padding:0 18px;font-size:.92rem;}

/* nav (shared) */
.brand-logo{height:38px;width:auto;display:block;}
@media(max-width:640px){.brand-logo{height:32px;}}
.logo{display:inline-flex;align-items:center;gap:11px;}
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .25s,box-shadow .25s,padding .25s;padding:18px 0;}
.nav.scrolled{background:#fff;box-shadow:0 1px 0 var(--line),0 12px 30px -22px rgba(23,19,41,.4);padding:11px 0;}
.nav-in{display:flex;align-items:center;gap:30px;}
.nav-links{display:flex;gap:34px;margin-left:auto;align-items:center;}
.nav-links a{font-weight:600;font-size:.95rem;white-space:nowrap;color:var(--ink);opacity:.82;position:relative;padding:4px 0;}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--grad);transition:right .25s;border-radius:2px;}
.nav-links a:hover{opacity:1;}
.nav-links a:hover::after,.nav-links a.active::after{right:0;}
.nav-links a.active{opacity:1;}
.nav-dd{position:relative;}
.nav-dd-btn{border:0;background:none;font-family:inherit;font-weight:600;font-size:.95rem;color:var(--ink);opacity:.82;cursor:pointer;display:inline-flex;align-items:center;gap:5px;padding:4px 0;white-space:nowrap;}
.nav-dd-btn:hover{opacity:1;}
.nav-dd-btn svg{width:12px;height:12px;transition:transform .2s;}
.nav-dd.open .nav-dd-btn svg{transform:rotate(180deg);}
.nav-dd-menu{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px;min-width:190px;display:none;flex-direction:column;gap:2px;z-index:120;}
.nav-dd.open .nav-dd-menu{display:flex;}
.nav-dd-menu a{padding:10px 13px;border-radius:9px;font-size:.92rem;font-weight:600;color:var(--ink);opacity:.85;white-space:nowrap;}
.nav-dd-menu a::after{display:none;}
.nav-dd-menu a:hover{background:var(--lav);color:var(--deep);opacity:1;}
.nav-cta{display:flex;align-items:center;gap:20px;}
.nav-cta .login{font-weight:700;color:var(--deep);padding:0 6px;}
.lang-switch{display:inline-flex;gap:2px;background:var(--lav);border-radius:10px;padding:3px;}
.lang-switch a{border:0;background:transparent;font-family:inherit;font-weight:700;font-size:.8rem;color:var(--muted);padding:5px 9px;border-radius:7px;text-decoration:none;display:inline-flex;align-items:center;}
.lang-switch a.on{background:#fff;color:var(--deep);box-shadow:var(--shadow-sm);}
.hamb{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;}
.hamb span{width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.25s;}

/* ============ article ============ */
.arthead{padding:140px 0 30px;background:radial-gradient(1000px 460px at 82% -10%,var(--lav),transparent 58%),var(--white);}
.crumb{font-size:.9rem;color:var(--muted);margin-bottom:22px;display:flex;align-items:center;gap:8px;}
.crumb a{color:var(--deep);font-weight:700;}
.crumb a:hover{text-decoration:underline;}
.art-meta{max-width:74ch;}
.tagrow{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px;}
.cat{font-size:.72rem;font-weight:700;letter-spacing:.04em;color:var(--deep);background:var(--lav);padding:5px 12px;border-radius:999px;}
.arthead h1{font-size:clamp(2rem,4.4vw,3.05rem);margin-bottom:18px;line-height:1.14;}
.arthead .dek{font-size:clamp(1.08rem,1.9vw,1.28rem);color:var(--muted);line-height:1.55;}
.byline{margin-top:22px;display:flex;align-items:center;gap:12px;font-size:.9rem;color:var(--faint);}
.byline .av{width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;font-size:.95rem;}
.byline b{color:var(--ink);}

/* hero image */
.art-hero{max-width:1080px;margin:6px auto 0;padding:0 24px;}
.art-hero figure{margin:0;border-radius:24px;overflow:hidden;box-shadow:var(--shadow);position:relative;}
.art-hero img{width:100%;height:clamp(240px,42vw,460px);object-fit:cover;object-position:center 35%;}
.art-hero figcaption{position:absolute;left:0;right:0;bottom:0;padding:40px 24px 16px;font-size:.84rem;color:rgba(255,255,255,.9);background:linear-gradient(transparent,rgba(23,19,41,.66));}

.article{max-width:720px;margin:0 auto;padding:26px 24px 40px;}
.article p,.article li{font-size:1.075rem;line-height:1.85;color:#2b2740;}
.article p{margin:0 0 22px;}
.article h2{font-size:clamp(1.5rem,2.8vw,2rem);margin:50px 0 16px;}
.article h2 .n{color:var(--ai);margin-right:10px;font-variant-numeric:tabular-nums;}
.article h3{font-size:1.24rem;margin:32px 0 12px;}
.article strong,.article b{color:var(--ink);font-weight:700;}
.article ul{margin:0 0 22px;padding:0;list-style:none;display:flex;flex-direction:column;gap:12px;}
.article ul li{position:relative;padding-left:30px;}
.article ul li::before{content:"";position:absolute;left:2px;top:11px;width:9px;height:9px;border-radius:3px;background:var(--grad);}
.article .lead{font-size:1.18rem;line-height:1.75;color:var(--ink);font-weight:500;border-left:4px solid var(--ai);padding:2px 0 2px 20px;margin:0 0 30px;}
.pull{margin:34px 0;padding:26px 28px;background:var(--cloud);border:1px solid var(--line);border-radius:18px;font-size:1.22rem;font-weight:700;line-height:1.5;color:var(--deep);}

/* figures / images inside article */
figure.fig{margin:36px 0;}
figure.fig img{width:100%;border-radius:16px;border:1px solid var(--line);box-shadow:var(--shadow);}
figure.fig figcaption{font-size:.86rem;color:var(--faint);margin-top:12px;text-align:center;line-height:1.55;}
figure.fig figcaption b{color:var(--muted);}
.tagpill{display:inline-block;font-size:.7rem;font-weight:700;color:var(--deep);background:var(--lav);padding:3px 9px;border-radius:999px;margin-right:6px;vertical-align:middle;}

/* image + text split */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:36px;align-items:center;margin:38px 0;}
.split .si img{width:100%;border-radius:16px;box-shadow:var(--shadow);border:1px solid var(--line);}
.split .st h3{margin:0 0 10px;}
.split .st p{margin:0;font-size:1.02rem;}
@media(max-width:720px){.split{grid-template-columns:1fr;gap:20px;}}

/* phone frames */
.phonewrap{display:flex;gap:26px;align-items:center;justify-content:center;flex-wrap:wrap;margin:36px 0;}
.phone{width:238px;max-width:64vw;border:9px solid #17132a;border-radius:38px;overflow:hidden;box-shadow:var(--shadow);background:#17132a;}
.phone img{width:100%;display:block;}
.phone-cap{max-width:300px;}
.phone-cap h3{margin:0 0 8px;}
.phone-cap p{margin:0;font-size:1rem;color:var(--muted);}

/* comparison table */
.cmp{margin:32px 0;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);}
.cmp-scroll{overflow-x:auto;}
.cmp table{width:100%;border-collapse:collapse;font-size:.96rem;min-width:520px;}
.cmp th,.cmp td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.5;}
.cmp thead th{background:var(--ink);color:#fff;font-size:.9rem;font-weight:700;}
.cmp tbody th{font-weight:700;color:var(--ink);background:var(--cloud);white-space:nowrap;}
.cmp td{color:var(--muted);}
.cmp .yes{color:var(--good);font-weight:700;}
.cmp .mid{color:var(--warn);font-weight:700;}
.cmp tr:last-child td,.cmp tr:last-child th{border-bottom:0;}

/* faq */
.faq{max-width:720px;margin:20px auto 0;padding:0 24px;}
.faq h2{font-size:clamp(1.4rem,2.6vw,1.8rem);margin:0 0 18px;}
.faq details{border:1px solid var(--line);border-radius:14px;padding:2px 20px;margin-bottom:12px;background:#fff;transition:.2s;}
.faq details[open]{border-color:var(--ai);box-shadow:var(--shadow-sm);}
.faq summary{cursor:pointer;font-weight:700;font-size:1.04rem;padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;color:var(--ink);}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";font-size:1.5rem;color:var(--ai);font-weight:400;transition:.2s;}
.faq details[open] summary::after{transform:rotate(45deg);}
.faq details p{padding:0 0 18px;margin:0;color:#2b2740;line-height:1.8;font-size:1.02rem;}

/* disclaimer */
.disclaimer{max-width:720px;margin:34px auto 0;padding:0 24px;}
.disc-box{background:var(--cloud);border:1px solid var(--line);border-radius:16px;padding:18px 20px;display:flex;gap:14px;align-items:flex-start;}
.disc-box .ic{width:24px;height:24px;flex:none;color:var(--muted);}
.disc-box p{font-size:.9rem;color:var(--muted);line-height:1.6;margin:0;}

/* end CTA */
.artcta{max-width:720px;margin:44px auto 0;padding:0 24px;}
.artcta-in{background:var(--grad);color:#fff;border-radius:24px;padding:clamp(32px,5vw,46px) 34px;text-align:center;position:relative;overflow:hidden;}
.artcta-in::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 20% 0%,rgba(255,255,255,.18),transparent 60%);}
.artcta-in>*{position:relative;}
.artcta-in h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:12px;}
.artcta-in p{color:rgba(255,255,255,.9);margin-bottom:24px;font-size:1.05rem;}
.artcta-in .btn.primary{background:#fff;color:var(--deep);box-shadow:0 14px 30px -12px rgba(0,0,0,.4);}

/* related */
.related{max-width:720px;margin:52px auto 0;padding:0 24px;}
.related h4{font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;color:var(--faint);margin-bottom:16px;}
.rel-card{display:flex;gap:16px;align-items:center;border:1px solid var(--line);border-radius:16px;padding:18px 20px;transition:.2s;margin-bottom:12px;}
.rel-card:hover{border-color:var(--ai);box-shadow:var(--shadow-sm);transform:translateY(-3px);}
.rel-card .rc-ic{width:44px;height:44px;border-radius:12px;background:var(--lav);color:var(--deep);display:grid;place-items:center;flex:none;}
.rel-card .rc-ic svg{width:22px;height:22px;}
.rel-card b{display:block;font-size:1.02rem;}
.rel-card span{font-size:.88rem;color:var(--muted);}

/* footer */
footer{background:var(--ink);color:#fff;padding:64px 0 34px;margin-top:70px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;margin-bottom:44px;}
.foot-brand .foot-logo{height:54px;width:auto;display:block;}
.foot-brand p{color:rgba(255,255,255,.6);font-size:.9rem;margin:16px 0 20px;max-width:34ch;}
.foot-col h5{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:rgba(255,255,255,.5);margin:0 0 16px;font-weight:700;}
.foot-col a{display:block;color:rgba(255,255,255,.78);font-size:.92rem;padding:6px 0;transition:.15s;}
.foot-col a:hover{color:#fff;padding-left:4px;}
.foot-bot{border-top:1px solid rgba(255,255,255,.12);padding-top:24px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:.84rem;color:rgba(255,255,255,.55);}
.foot-bot .lang-switch{background:rgba(255,255,255,.08);}
.foot-bot .lang-switch a{color:rgba(255,255,255,.7);}
.foot-bot .lang-switch a.on{background:rgba(255,255,255,.16);color:#fff;box-shadow:none;}

@media(max-width:960px){.foot-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:720px){
  .nav-links{display:none;}
  .nav-links.open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#fff;padding:18px 24px;box-shadow:var(--shadow);margin:0;gap:6px;z-index:100;align-items:flex-start;}
  .nav-links.open a{padding:12px 0;border-bottom:1px solid var(--line);opacity:1;width:100%;}
  .nav-dd-menu{position:static;transform:none;display:flex;border:0;box-shadow:none;padding:0;min-width:0;margin:0;}
  .nav-dd-menu a{padding:11px 0 11px 14px;border-bottom:1px solid var(--line);}
  .nav-dd-btn{padding:12px 0;font-size:1rem;width:100%;justify-content:space-between;}
  .hamb{display:flex;}
  .nav-cta .login,.nav-cta .lang-switch{display:none;}
}
@media(max-width:560px){.foot-grid{grid-template-columns:1fr;}.foot-bot{flex-direction:column;align-items:flex-start;}}