/* Orbit Tower — 企業藍 × 白底 × Glass UI 設計系統 (Growth Engine V2) */
:root{
  --primary:#2563EB;--primary-d:#1D4ED8;--primary-dd:#1E40AF;
  --cyan:#06B6D4;--bg:#FFFFFF;--section:#F8FAFC;--text:#0F172A;--muted:#475569;--faint:#94A3B8;
  --line:rgba(37,99,235,.16);--card-line:#E7EEF7;--tint:#EFF6FF;--ok:#059669;--warn:#D97706;
  --radius:16px;--maxw:1120px;
  --font:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
  --serif:"Noto Serif TC","Songti TC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:none;opacity:.92}
h1,h2,h3,h4{font-family:var(--serif);line-height:1.35;margin:0 0 .5em;letter-spacing:.01em}
h1{font-size:clamp(30px,4.8vw,50px);font-weight:700}
h2{font-size:clamp(24px,3.2vw,34px);font-weight:700}
h3{font-size:20px;font-weight:700}
p{margin:0 0 1em}
.wrap{width:min(var(--maxw),calc(100% - 40px));margin-inline:auto}
.mono{font-family:"IBM Plex Mono",ui-monospace,monospace}
.serif{font-family:var(--serif)}
.lead{font-size:19px;color:var(--muted);line-height:1.8}
.muted{color:var(--muted)}
.faint{color:var(--faint)}
.center{text-align:center}
section{padding:64px 0}
.band--sec{background:var(--section)}
.band--brand{background:linear-gradient(135deg,#1E40AF 0%,#2563EB 45%,#06B6D4 130%);color:#fff}
.band--brand h2,.band--brand h3{color:#fff}
.band--brand .lead{color:#DBEAFE}

/* ---- hex / logo ---- */
.hex{display:inline-block;width:30px;height:30px;clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%);background:linear-gradient(135deg,#fff,var(--cyan));flex:none}
.hex--sm{width:18px;height:18px}

/* ---- navbar ---- */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--card-line)}
.nav__in{display:flex;align-items:center;gap:14px;height:66px}
.nav .wrap{width:calc(100% - 32px)}
@media (max-width:1700px){.nav .brand small{display:none}}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:18px;color:var(--text);line-height:1.1}
.brand .mark{width:40px;height:40px;flex:none;display:grid;place-items:center;border-radius:50%;overflow:hidden;background:#fff;border:1px solid var(--card-line);box-shadow:0 4px 14px -6px rgba(37,99,235,.35)}
.brand .mark img{width:100%;height:100%;object-fit:cover}
footer .brand .mark{border-color:#334155;background:#111827}
.logo-strip{display:inline-block}
.brand small{display:block;font-family:"IBM Plex Mono",monospace;font-weight:400;font-size:9.5px;letter-spacing:.14em;color:var(--faint)}
.nav__links{margin-left:auto;display:flex;align-items:center;gap:2px;min-width:0;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.nav__links::-webkit-scrollbar{display:none}
.nav__links a{font-size:14.5px;color:var(--muted);padding:8px 9px;border-radius:99px;transition:.18s;white-space:nowrap;flex:none}
.nav__links a:hover{background:var(--section);color:var(--primary)}
.nav__links a[aria-current]{color:var(--primary);background:var(--tint);font-weight:500}
.nav__cta{margin-left:6px}
/* 導航密排分級：全橫排永不直排；1480px 以下改漢堡收選單 */
.nav__links .lang-switch{margin-left:4px!important}
.nav__links .lang-switch button{padding:5px 8px!important}
@media (max-width:1960px){.nav__links a{font-size:13.5px;padding:8px 7px}}
@media (max-width:1700px){.nav__links a{font-size:12.8px;padding:7px 5px}.nav__links{gap:1px}.nav__in{gap:10px}}
.nav__burger{display:none;width:42px;height:42px;border:1px solid var(--card-line);border-radius:10px;background:#fff;cursor:pointer;font-size:20px;color:var(--primary);margin-left:auto}
/* ≤1520px：橫排放不下全部選單 → 漢堡收攏（展開後仍為橫排一行一項） */
@media (max-width:1520px){
 .nav__links{position:absolute;top:64px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--card-line);padding:10px 20px 18px;gap:2px;box-shadow:0 24px 40px -18px rgba(15,23,42,.25);overflow:visible;white-space:normal;margin-left:0}
 .nav__links.open{display:flex}
 .nav__links a{font-size:14.5px;padding:10px 12px}
 .nav__burger{display:grid;place-items:center}
}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:500;padding:12px 22px;border-radius:12px;border:1px solid transparent;cursor:pointer;transition:.18s;text-decoration:none;font-family:var(--font)}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 10px 26px -10px rgba(37,99,235,.6)}
.btn--primary:hover{background:var(--primary-d);transform:translateY(-1px);opacity:1}
.btn--ghost{background:#fff;color:var(--primary);border-color:var(--line)}
.btn--ghost:hover{background:var(--tint)}
.btn--white{background:#fff;color:var(--primary-dd)}
.btn--white:hover{background:#EFF6FF}
.btn--lg{padding:15px 28px;font-size:16.5px}
.btn--sm{padding:8px 15px;font-size:13.5px;border-radius:10px}

/* ---- cards / grids ---- */
.card{background:#fff;border:1px solid var(--card-line);border-radius:var(--radius);padding:26px;box-shadow:0 14px 44px -20px rgba(15,23,42,.16);transition:.2s}
.card--glass{background:rgba(255,255,255,.72);backdrop-filter:blur(10px)}
.card--hover:hover{transform:translateY(-3px);box-shadow:0 22px 50px -22px rgba(37,99,235,.4);border-color:var(--line)}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.tag-chip{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--primary-dd);background:var(--tint);border:1px solid var(--line);border-radius:99px;padding:6px 13px;font-family:"IBM Plex Mono",monospace}
.k{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}
.ico{width:52px;height:52px;border-radius:13px;background:linear-gradient(135deg,var(--primary),var(--cyan));color:#fff;display:grid;place-items:center;font-size:23px;margin-bottom:14px}
.ico--soft{background:var(--tint);color:var(--primary)}

/* ---- stat ---- */
.stat{border-top:3px solid var(--primary)}
.stat b{font-family:var(--serif);font-size:40px;color:var(--primary-dd);line-height:1}
.stat span{font-size:13.5px;color:var(--muted)}

/* ---- hero ---- */
.hero{position:relative;overflow:hidden;padding:78px 0 66px;background:radial-gradient(900px 460px at 90% 0%,rgba(6,182,212,.12),transparent 55%),radial-gradient(780px 460px at 0% 30%,rgba(37,99,235,.12),transparent 55%),var(--section)}
.hero__in{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero__art{position:relative}
.hero__art img{border-radius:20px;border:1px solid var(--card-line);box-shadow:0 30px 70px -22px rgba(37,99,235,.4)}
.hero__float{position:absolute;left:-16px;bottom:26px;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border:1px solid var(--card-line);border-radius:13px;padding:11px 15px;box-shadow:0 16px 40px -18px rgba(15,23,42,.4);display:flex;flex-direction:column}
.hero__float b{font-size:22px;color:var(--primary);font-family:var(--serif)}
.hero__float span{font-size:11.5px;color:var(--muted)}
.online{display:inline-flex;align-items:center;gap:9px;font-size:13px;color:var(--ok);background:#ECFDF5;border:1px solid #A7F3D0;border-radius:99px;padding:7px 13px}
.online i{width:8px;height:8px;border-radius:50%;background:#10B981;box-shadow:0 0 0 4px rgba(16,185,129,.2);animation:pulse 1.8s infinite}
@keyframes pulse{50%{opacity:.45}}

/* ---- footer ---- */
footer{background:#0F172A;color:#CBD5E1;padding:54px 0 30px}
footer a{color:#DBEAFE}
.foot{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:34px}
.foot h3{color:#fff;font-size:14px;font-family:var(--font);letter-spacing:.06em}
.foot a{display:block;font-size:14px;color:#94A3B8;padding:5px 0}
.foot a:hover{color:#fff}
.foot__bar{border-top:1px solid #1E293B;margin-top:34px;padding-top:22px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:#64748B}

/* ---- form ---- */
.form{display:grid;gap:13px}
label{font-size:13px;color:var(--muted)}
input:not([type="checkbox"]):not([type="radio"]),textarea,select{width:100%;font-family:var(--font);font-size:15px;color:var(--text);background:#fff;border:1px solid #CBD5E1;border-radius:11px;padding:12px 14px;outline:none;transition:.18s}
input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.14)}
.consent{display:flex;gap:8px;font-size:12px;color:var(--muted);line-height:1.5;align-items:flex-start}
.consent input{width:16px;flex:none;margin-top:2px}

/* ---- article typography ---- */
.article{max-width:768px;margin-inline:auto}
.article p{font-size:17px;line-height:1.95;color:#1E293B}
.article h2{font-size:26px;margin:40px 0 14px;padding-top:10px}
.article h2 .n{color:var(--cyan);font-size:15px;margin-right:7px}
.article__head{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:var(--muted);padding-bottom:18px;margin-bottom:22px;border-bottom:1px solid var(--card-line)}
.article__cta{font-size:17px;font-weight:500;color:var(--text)}
.article__cta a{text-decoration:underline;text-underline-offset:4px}
.h60{background:linear-gradient(180deg,#F8FAFC,#fff);border:1px solid var(--card-line);border-left:4px solid var(--cyan);border-radius:0 14px 14px 0;padding:18px 22px;margin:28px 0}
.hook{background:linear-gradient(135deg,#EFF6FF,#ECFEFF);border:1px solid var(--line);border-radius:18px;padding:28px;text-align:center;margin:38px 0}
.fission{border:1.5px dashed var(--primary);background:var(--tint);border-radius:18px;padding:26px;text-align:center;margin:38px 0}
.share-row{display:flex;flex-wrap:wrap;gap:11px;justify-content:center;margin-top:16px}
.share-btn{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:500;padding:11px 18px;border-radius:11px;color:#fff;background:#10B981;border:0;cursor:pointer;text-decoration:none;font-family:var(--font);transition:.18s}
.share-btn:hover{opacity:.95;filter:saturate(1.1)}
.share-btn--in{background:#0A66C2}.share-btn--fb{background:#1877F2}.share-btn--copy{background:#334155}
.share-btn--x{background:#000}
.leadmag{background:#0F172A;color:#E2E8F0;border-radius:20px;padding:34px;display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:center;margin:40px 0}
.magnet input{background:#1E293B;border-color:#334155;color:#fff}
.magnet input::placeholder{color:#64748B}
.related{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:16px}
.related a{display:block;background:#fff;border:1px solid var(--card-line);border-radius:12px;padding:15px 17px;font-size:14.5px;color:var(--text);font-weight:500}
.related a:hover{border-color:var(--line);background:var(--tint)}
.favbar{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;padding:16px 0;border-top:1px solid var(--card-line);border-bottom:1px solid var(--card-line);margin:36px 0}
.favbtn{background:#fff;border:1px solid var(--card-line);border-radius:99px;padding:9px 16px;font-size:14px;cursor:pointer;font-family:var(--font);color:var(--muted);transition:.2s}
.favbtn.on{background:#FEF9C3;border-color:#FACC15;color:var(--text)}

/* ---- accordion ---- */
.acc{border-bottom:1px solid var(--card-line)}
.acc__q{width:100%;display:flex;gap:16px;align-items:center;justify-content:space-between;background:none;border:0;text-align:left;padding:18px 4px;cursor:pointer;font-family:var(--font);font-size:17.5px;font-weight:500;color:var(--text)}
.acc__ic{width:26px;height:26px;flex:none;border:1px solid var(--card-line);border-radius:50%;display:grid;place-items:center;color:var(--primary);transition:.25s}
.acc.open .acc__ic{transform:rotate(45deg);background:var(--primary);color:#fff;border-color:var(--primary)}
.acc__a{display:none;padding:0 46px 20px 4px;color:var(--muted);font-size:15.5px}
.acc.open .acc__a{display:block}

/* ---- pricing ---- */
.plan{display:flex;flex-direction:column;gap:0}
.plan .price{font-family:var(--serif);font-size:44px;color:var(--primary-dd);line-height:1;margin:6px 0 4px}
.plan ul{list-style:none;padding:0;margin:22px 0;display:grid;gap:11px;flex:1}
.plan li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.plan li::before{content:"✓";color:var(--primary);font-weight:700;flex:none}
.plan--ft{border-color:var(--primary);box-shadow:0 22px 50px -20px rgba(37,99,235,.4)}
.ribbon{position:absolute;top:16px;right:-38px;transform:rotate(45deg);background:linear-gradient(135deg,var(--primary),var(--cyan));color:#fff;font-size:11.5px;padding:5px 42px;letter-spacing:.06em;font-family:"IBM Plex Mono",monospace}

/* ---- table ---- */
table{width:100%;border-collapse:collapse;font-size:15px}
th{text-align:left;color:var(--primary-dd);font-size:12.5px;font-weight:500;text-transform:uppercase;letter-spacing:.08em;padding:13px 12px;border-bottom:2px solid var(--line)}
td{padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:top}
tr:hover td{background:var(--section)}

/* ---- responsive system ---- */
.duo{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.leadmag{grid-template-columns:1.05fr .95fr}
.leadmag .magnet{grid-template-columns:1fr 1fr}
@media (max-width:960px){
 .nav__links{position:absolute;top:64px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--card-line);padding:10px 20px 18px;gap:2px;box-shadow:0 24px 40px -18px rgba(15,23,42,.25);overflow:visible;white-space:normal}
 .nav__links a{padding:10px 12px}
 .nav__links.open{display:flex}
 .nav__burger{display:grid;place-items:center}
 .duo,.hero__in{grid-template-columns:1fr;gap:28px}
 .duo{align-items:start}
 .hero{padding:52px 0 44px}
 .hero__art{max-width:560px;margin-inline:auto}
 .hero__float{left:8px;bottom:12px}
 .leadmag{grid-template-columns:1fr;padding:24px}
 .foot{grid-template-columns:1fr 1fr}
 .card{padding:22px 18px}
}
@media (max-width:720px){
 body{font-size:15px;line-height:1.7}
 section{padding:44px 0}
 h1{font-size:clamp(26px,7.5vw,34px)} h2{font-size:clamp(21px,5.4vw,26px)}
 .wrap{width:calc(100% - 30px)}
 .article p{font-size:16.5px;line-height:1.9}
 .plan .price{font-size:34px}
 .stat b{font-size:30px}
 .foot{grid-template-columns:1fr}
 .favbar{flex-direction:column;align-items:flex-start;gap:10px}
 .related{grid-template-columns:1fr}
 table{font-size:13.5px} th,td{padding:10px 9px}
 .hook,.fission{padding:20px 16px}
 .leadmag .magnet{grid-template-columns:1fr}
 .h60{padding:14px 16px}
}
@media (max-width:400px){ .nav__in{gap:8px} .brand small{display:none} }

/* ---- 暖色系主題 v29（鵝黃・由 i18n.js 挂 data-theme="warm"，選單切換＋localStorage 記憶） ---- */
html[data-theme="warm"]{
  --bg:#FFFDF4;--section:#FCF5DF;--tint:#FBF2CF;
  --card-line:#EFE6C5;--line:rgba(146,104,20,.18);
}
html[data-theme="warm"] .card,html[data-theme="warm"] .plan{background:#FFFDF4}
html[data-theme="warm"] .nav{background:rgba(255,253,244,.86)}
html[data-theme="warm"] .btn--ghost{background:#FFFDF4}
html[data-theme="warm"] .acc__a{background:#FFFDF4}