/* IUClouds — 官網樣式（繁中版第一階段）
   設計基準：瓷白底 + 冷藍主色 + 大量留白
   用法：全站共用，勿在頁面內寫行內樣式 */

:root{
  --ink:#0C1A2A; --ink2:#39485A; --muted:#7A8798; --muted2:#9AA6B4;
  --line:#E4E8EE; --line2:#EEF1F5; --bg:#FBFCFD; --white:#fff;
  --cobalt:#1F4FD8; --cobalt-d:#163CA8; --teal:#0FA98F; --gold:#E8A33D; --red:#D8452F;
  --r-s:10px; --r:16px; --r-l:24px;
  --shadow:0 1px 2px rgba(12,26,42,.04), 0 12px 32px rgba(12,26,42,.06);
  --shadow-s:0 1px 2px rgba(12,26,42,.05);
  --max:1180px;
  --nav-h:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Noto Sans TC","PingFang TC","Hiragino Sans TC","Microsoft JhengHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(31,79,216,.16)}

/* ---------- layout ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
.sec{padding:96px 0}
.sec--tight{padding:64px 0}
.sec--line{border-top:1px solid var(--line2)}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- type ---------- */
.eyebrow{display:inline-block;font-size:11.5px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.h1{font-size:clamp(34px,4.4vw,58px);line-height:1.18;letter-spacing:-.02em;font-weight:700;text-wrap:balance}
.h2{font-size:clamp(26px,2.9vw,38px);line-height:1.28;letter-spacing:-.015em;font-weight:700;text-wrap:balance}
.h3{font-size:19px;line-height:1.45;font-weight:700;letter-spacing:-.005em}
.lede{font-size:17px;color:var(--ink2);line-height:1.8}
.small{font-size:13.5px;color:var(--muted)}
.accent{color:var(--cobalt)}
.accent-teal{color:var(--teal)}

/* ---------- header ---------- */
.header{position:sticky;top:0;z-index:50;height:var(--nav-h);
  background:rgba(251,252,253,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line2)}
.header__in{max-width:var(--max);margin:0 auto;padding:0 28px;height:100%;display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand svg,.brand img{width:32px;height:32px;display:block}
.brand__word{font-size:22px;font-weight:800;letter-spacing:-.03em}
.nav{display:flex;gap:26px;margin-left:auto;align-items:center}
.nav a{font-size:14.5px;color:var(--ink2);font-weight:500;padding:6px 0;position:relative;transition:color .2s}
.nav a:hover{color:var(--ink)}
.nav a.is-active{color:var(--ink);font-weight:700}
.nav a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--cobalt);border-radius:2px}
.lang{position:relative;flex:0 0 auto}
.lang__btn{display:flex;align-items:center;gap:6px;height:36px;padding:0 12px;border:1px solid var(--line);
  background:#fff;border-radius:10px;font-size:13.5px;color:var(--ink2);cursor:pointer;font-family:inherit}
.lang__menu{position:absolute;top:44px;right:0;width:auto;min-width:0;white-space:nowrap;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--shadow);padding:6px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:.2s}
.lang__menu.is-open{opacity:1;visibility:visible;transform:none}
.lang__menu a,.lang__menu button{display:block;width:100%;text-align:left;padding:9px 14px;border-radius:8px;
  font-size:14px;color:var(--ink2);background:none;border:0;cursor:pointer;font-family:inherit}
.lang__menu a:hover,.lang__menu button:hover{background:#F4F6F9;color:var(--ink)}
.lang__menu .is-on{color:var(--ink);font-weight:700}
.cta-btn{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:14px;font-weight:600;transition:.22s}
.cta-btn:hover{background:var(--cobalt)}
.burger{display:none}

/* ---------- hero ---------- */
.hero{padding:88px 0 72px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(60% 55% at 82% 8%,rgba(31,79,216,.10),transparent 62%),
    radial-gradient(48% 48% at 8% 92%,rgba(15,169,143,.09),transparent 60%),
    linear-gradient(180deg,#F5F8FD 0%,var(--bg) 78%);}
.hero__eyebrow{margin-bottom:22px}
.ob-logo{height:30px;width:auto;display:block;margin-bottom:20px}
.hero h1{max-width:15em}
.hero__sub{margin-top:24px;max-width:34em;font-size:18px;color:var(--ink2)}
.hero__cta{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;transition:.22s;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn--primary{background:var(--cobalt);color:#fff}
.btn--primary:hover{background:var(--cobalt-d)}
.btn--ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--ink);}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:44px;flex-wrap:wrap}
.sec-head__l{max-width:34em}
.sec-head .eyebrow{margin-bottom:14px}
.sec-head__r{max-width:26em;color:var(--ink2);font-size:15px}

/* ---------- cards ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px;transition:.26s}
.card:hover{box-shadow:var(--shadow);border-color:#D8DFE8}
.card--flat{background:transparent;border-color:transparent;padding:0}
.card__idx{display:inline-block;font-size:12px;font-weight:700;color:var(--cobalt);letter-spacing:.1em;margin-bottom:14px}
.card p{color:var(--ink2);font-size:14.5px;margin-top:10px}

/* feature (big) */
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:38px;position:relative;overflow:hidden}
.feature::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,79,216,.10),transparent 70%)}
.feature .tag{display:inline-block;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--cobalt);font-weight:700;margin-bottom:16px}
.feature h3{font-size:24px;letter-spacing:-.01em}
.feature p{color:var(--ink2);font-size:15px;margin-top:12px}
.feature ul{margin-top:20px;display:grid;gap:9px}
.feature li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink2)}
.feature li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--teal)}
.feature__link{display:inline-flex;align-items:center;gap:6px;margin-top:24px;font-size:14px;font-weight:600;color:var(--cobalt)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:34px 26px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:32px;font-weight:800;letter-spacing:-.02em}
.stat span{display:block;font-size:13px;color:var(--muted);margin-top:6px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.step{padding:28px 24px 0 0;border-right:1px solid var(--line2)}
.step:last-child{border-right:0}
.step b{display:block;font-size:12px;letter-spacing:.14em;color:var(--cobalt);font-weight:700}
.step h4{font-size:16px;margin-top:12px}
.step p{font-size:14px;color:var(--ink2);margin-top:8px}

/* spec table */
.spec{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.spec th,.spec td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line2);vertical-align:top}
.spec th{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600;background:#F8FAFC}
.spec tr:last-child td{border-bottom:0}
.spec td:first-child{font-weight:600;width:26%}

/* notice */
.notice{border:1px solid var(--line);border-left:3px solid var(--gold);background:#FFFCF5;border-radius:12px;padding:18px 22px;font-size:13.5px;color:#6B5A34;line-height:1.75}

/* cta band */
.band{background:linear-gradient(135deg,#0C1A2A 0%,#14283F 58%,#1B3A5C 100%);color:#fff;padding:76px 0}
.band h2{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.015em}
.band p{color:rgba(255,255,255,.72);margin-top:14px;font-size:15.5px}
.band .btn--primary{background:#fff;color:var(--ink)}
.band .btn--primary:hover{background:#E8EEF7}
.band .btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.32)}
.band .btn--ghost:hover{border-color:#fff}
.band__in{display:flex;align-items:center;justify-content:space-between;gap:48px;flex-wrap:wrap}

/* footer */
.footer{padding:64px 0 40px;border-top:1px solid var(--line);background:#fff}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}
.footer h5{font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:16px}
.footer li{margin-bottom:10px}
.footer a,.footer li span{font-size:14px;color:var(--ink2)}
.footer a:hover{color:var(--cobalt)}
.footer__about{font-size:14px;color:var(--muted);margin-top:14px;max-width:22em}
.footer__bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--line2);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.footer__langs{display:flex;gap:14px;flex-wrap:wrap}
.footer__langs button{background:none;border:0;padding:0;font-family:inherit;font-size:13px;color:var(--muted);cursor:pointer}
.footer__langs button.is-on{color:var(--ink);font-weight:700}

/* map */
.map-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:28px}
.map-card svg{width:100%;height:auto}
.map-legend{display:flex;gap:22px;flex-wrap:wrap;margin-top:18px;font-size:13px;color:var(--ink2)}
.map-legend i{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:7px;vertical-align:middle}
.i-office{background:var(--red)}
.i-star{background:var(--gold);border-radius:0;clip-path:polygon(50% 0,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%)}

/* responsive */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:860px){
  .sec{padding:68px 0}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stat{border-bottom:1px solid var(--line)}
  .stat:nth-child(2n){border-right:0}
  .steps{grid-template-columns:1fr 1fr}
  .step{padding:24px 20px 20px 0;border-bottom:1px solid var(--line2)}
  .nav{display:none}
  .burger{display:inline-flex;margin-left:auto}
  .header__in{gap:16px}
}
@media (max-width:640px){
  .wrap{padding:0 20px}
  .hero{padding:56px 0 48px}
  .sec{padding:56px 0}
  .feature{padding:26px}
  .card{padding:24px}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0}
  .steps{grid-template-columns:1fr}
  .step{border-right:0}
  .footer__grid{grid-template-columns:1fr}
  .band{padding:56px 0}
}

/* mobile drawer */
.drawer{position:fixed;inset:0;z-index:60;background:rgba(251,252,253,.98);backdrop-filter:blur(20px);
  padding:28px;display:none;flex-direction:column;gap:6px}
.drawer.is-open{display:flex}
.drawer a{font-size:20px;font-weight:600;padding:14px 0;border-bottom:1px solid var(--line2)}
.drawer__close{position:absolute;top:18px;right:22px;font-size:26px;background:none;border:0;cursor:pointer;color:var(--ink)}
.burger{width:40px;height:40px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}
.burger span,.burger span::before,.burger span::after{display:block;width:16px;height:1.5px;background:var(--ink);position:relative}
.burger span::before{content:"";position:absolute;top:-5px}
.burger span::after{content:"";position:absolute;top:5px}

/* ---------- APAC map ---------- */.map-band{background:linear-gradient(155deg,#0E1723 0%,#152233 58%,#1A2A3E 100%);border-radius:var(--r-l);padding:22px;overflow:hidden;position:relative;max-width:520px;margin:0 auto}
.map-band::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(60% 40% at 75% 12%,rgba(255,106,61,.10),transparent 65%)}
.map-band img{width:auto;max-width:100%;max-height:520px;height:auto;display:block;margin:0 auto;position:relative;z-index:1}
.map-cap{position:relative;z-index:1;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:4px;font-size:12.5px;color:rgba(255,255,255,.52);letter-spacing:.02em}

/* ---------- scroll reveal（無 JS 時內容照常顯示） ---------- */
body.reveal-ready .rv{opacity:0;transform:translateY(20px);transition:opacity .75s cubic-bezier(.22,1,.36,1),transform .75s cubic-bezier(.22,1,.36,1)}
body.reveal-ready .rv.in{opacity:1;transform:none}
body.reveal-ready .rv:nth-child(2){transition-delay:.06s}
body.reveal-ready .rv:nth-child(3){transition-delay:.12s}
body.reveal-ready .rv:nth-child(4){transition-delay:.18s}
@media (prefers-reduced-motion:reduce){
  body.reveal-ready .rv{opacity:1;transform:none;transition:none}
}

/* ---------- card hover ---------- */
.card{transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s,border-color .3s}
.card:hover{transform:translateY(-3px)}
.feature{transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s}
.feature:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.stat b{font-variant-numeric:tabular-nums}

/* ---------- v2：立體卡片 hover（全站可點卡片） ---------- */
.card{will-change:transform}
.card:hover{transform:translateY(-6px) scale(1.018);box-shadow:0 18px 44px -20px rgba(12,26,42,.30),0 2px 4px rgba(12,26,42,.05);border-color:#D2DAE5}

/* 大號序號（01 02 03 04） */
.card__num{display:block;font-size:34px;line-height:1;font-weight:800;letter-spacing:-.04em;
  color:#DDE3EC;margin-bottom:14px;transition:color .3s}
.card:hover .card__num{color:var(--cobalt)}

/* ---------- v2：Bento 網格卡片 ---------- */
.bento{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-rows:188px;gap:18px}
.bento--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.vcard--tall{grid-row:span 2}
.vcard--wide{grid-column:span 2}
.vcard{
  position:relative;display:flex;flex-direction:column;padding:24px;overflow:hidden;isolation:isolate;
  border:1px solid var(--line);border-radius:20px;background:#fff;
  box-shadow:0 1px 2px rgba(12,26,42,.05),0 14px 30px -22px rgba(12,26,42,.35);
  transition:transform .34s cubic-bezier(.22,1,.36,1),box-shadow .34s,border-color .34s;
  will-change:transform;
}
.vcard::before{content:"";position:absolute;inset:0;z-index:-1;opacity:0;transition:opacity .34s;
  background:radial-gradient(120% 95% at 88% -10%,var(--glow,rgba(31,79,216,.12)),transparent 62%)}
.vcard:hover{transform:translateY(-8px) scale(1.025);
  box-shadow:0 26px 60px -24px rgba(12,26,42,.34),0 2px 4px rgba(12,26,42,.06);border-color:#CDD6E2}
.vcard:hover::before{opacity:1}
.vcard__top{display:flex;align-items:center;gap:9px}
.vcard__dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto}
.vcard__label{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-weight:600}
.vcard__name{font-size:20px;font-weight:800;letter-spacing:-.02em;margin-top:auto}
.vcard--tall .vcard__name{font-size:27px}
.vcard__line{font-size:14px;color:var(--ink2);margin-top:8px;line-height:1.62}
.vcard__tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.vcard__tags span{font-size:11.5px;color:var(--ink2);background:var(--line2);border-radius:999px;padding:3px 9px;white-space:nowrap}
.vcard__go{position:absolute;right:18px;bottom:18px;width:30px;height:30px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--ink2);transition:.3s}
.vcard:hover .vcard__go{background:var(--ink);color:#fff;border-color:var(--ink);transform:scale(1.08)}
.vcard--tall .vcard__tags{margin-bottom:34px}
.vcard__list{margin:18px 0 0;display:grid;gap:10px}
.vcard__list li{display:flex;justify-content:space-between;gap:14px;font-size:13px;border-bottom:1px dashed var(--line);padding-bottom:9px}
.vcard__list span{color:var(--muted);white-space:nowrap}
.vcard__list b{font-weight:700;color:var(--ink);text-align:right}

/* ---------- v2：流光邊框（吸引點擊） ---------- */
.glow-frame{position:relative;padding:1.5px;border-radius:24px;
  background:linear-gradient(120deg,rgba(31,79,216,.55),rgba(15,169,143,.45),rgba(232,163,61,.55),rgba(31,79,216,.55));
  background-size:280% 280%;animation:glowShift 9s linear infinite}
.glow-frame__in{background:#fff;border-radius:22px;padding:30px;transition:transform .34s cubic-bezier(.22,1,.36,1),box-shadow .34s}
.glow-frame:hover .glow-frame__in{transform:translateY(-4px);box-shadow:0 22px 50px -26px rgba(12,26,42,.35)}
@keyframes glowShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}

/* 卡片流光邊框（用於要吸引點擊的卡片區塊） */
.card--glow{position:relative}
.card--glow::after{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1.5px;pointer-events:none;
  background:linear-gradient(120deg,rgba(31,79,216,.62),rgba(15,169,143,.5),rgba(232,163,61,.62),rgba(31,79,216,.62));
  background-size:280% 280%;animation:glowShift 9s linear infinite;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude}
.card--glow:hover::after{animation-duration:3.4s}

/* ---------- v2：全球節點（首頁區塊） ---------- */
.globe-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:40px;align-items:center}
.globe-copy h2{margin:14px 0 18px}
.globe-copy__p{color:var(--muted);font-size:16px;line-height:1.85;max-width:34em}
.globe-legend{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:24px;font-size:13.5px;color:var(--muted)}
.globe-legend span{display:inline-flex;align-items:center;gap:7px}
.globe-legend i{width:7px;height:7px;border-radius:50%;display:inline-block}
.dot-office{background:#5FCBFF;box-shadow:0 0 0 3px rgba(95,203,255,.18)}
.dot-client{background:#FFB067;box-shadow:0 0 0 3px rgba(255,176,103,.20)}
.globe-stage{position:relative;display:flex;justify-content:center;align-items:center;min-height:420px}
.globe-stage canvas{filter:drop-shadow(0 24px 44px rgba(12,28,52,.24))}
.globe-note{margin-top:10px;font-size:12.5px;color:var(--muted2);line-height:1.7;max-width:40em}
@media (max-width:900px){
  .globe-grid{grid-template-columns:1fr;gap:26px}
  .globe-stage{min-height:330px}
}

@media (max-width:900px){
  .bento,.bento--3{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:200px}
  .vcard--tall{grid-row:span 1}
  .vcard--wide{grid-column:span 2}
}
@media (max-width:600px){
  .bento,.bento--3{grid-template-columns:1fr;grid-auto-rows:auto}
  .vcard--wide{grid-column:span 1}
  .vcard{padding:22px}
}