*{box-sizing:border-box;margin:0;padding:0}
:root{--blue:#026eb9;--blue-d:#02558f;--blue-l:#e9f4fb;--ink:#16202b;--muted:#5a6b7c;
  --line:#e2e8f0;--bg:#fff;--bg2:#f5f9fd;--accent:#f5a623;--r:14px;--shadow:0 10px 30px rgba(2,110,185,.08)}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:15px;height:72px;flex-wrap:nowrap}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:19px;letter-spacing:.3px;
  flex:0 0 auto;white-space:nowrap}
.logo img{height:48px;width:auto;border-radius:9px;box-shadow:0 4px 14px rgba(2,110,185,.18);flex:0 0 auto}
.logo span{white-space:nowrap}
.logo small{display:block;font-size:10.5px;color:var(--muted);font-weight:500;letter-spacing:1.4px;white-space:nowrap}
nav{min-width:0;flex:0 1 auto}
nav ul{display:flex;gap:13px;list-style:none;font-size:13.8px;color:#33465a;flex-wrap:nowrap;white-space:nowrap}
nav ul li{white-space:nowrap}
nav ul a{padding:6px 0;border-bottom:2px solid transparent;white-space:nowrap}
nav ul a:hover{color:var(--blue);border-color:var(--blue)}
nav ul a.on{color:var(--blue);border-color:var(--blue);font-weight:700}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:9px;flex:0 0 auto;white-space:nowrap}
.tel{font-weight:700;color:var(--blue);font-size:13.8px;white-space:nowrap}
/* 頁首的 LINE 諮詢鈕縮小一號（2026-09-17：讓電話號碼與「聯絡我們」不再重疊） */
.nav-cta .btn-line{padding:8px 14px;font-size:13.2px;border-radius:9px}
.btn{display:inline-block;padding:11px 20px;border-radius:10px;font-weight:700;font-size:14.5px;
  transition:.18s;cursor:pointer;border:1px solid transparent;white-space:nowrap}
.btn-p{background:var(--blue);color:#fff}.btn-p:hover{background:var(--blue-d);transform:translateY(-1px)}
.btn-o{border-color:#c6d6e8;color:var(--blue)}.btn-o:hover{background:var(--blue-l)}
.btn-line{background:#06c755;color:#fff}.btn-line:hover{background:#05b34c;transform:translateY(-1px)}
.burger{display:none;background:none;border:0;font-size:22px;cursor:pointer}
/* hero (首頁) */
.hero{position:relative;overflow:hidden;background:
   radial-gradient(1100px 460px at 82% -12%, #dcebfb 0%, rgba(220,235,251,0) 62%),
   linear-gradient(180deg,#fbfdff,#f3f8fe)}
.hero .wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;padding:70px 22px 74px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  padding:6px 13px;border-radius:99px;font-size:13px;color:var(--blue);font-weight:600;box-shadow:var(--shadow)}
h1{font-size:28px;line-height:1.42;letter-spacing:-.2px;margin:16px 0 12px;font-weight:800}
h1 em{font-style:normal;color:var(--blue);border-bottom:5px solid #ffe6b8;white-space:nowrap}
.lede{font-size:14.5px;color:#43566b;max-width:34em}
.lede-list{display:grid;gap:3px;margin:4px 0;max-width:39em}
.lede-list .li{display:grid;grid-template-columns:19px 1fr;gap:6px;font-size:14.5px;color:#43566b;line-height:1.6}
.lede-list .li b{color:var(--blue);font-weight:800}
.hero-cta{display:flex;gap:13px;margin:26px 0 22px;flex-wrap:wrap}
.stats{display:flex;gap:34px;padding-top:20px;border-top:1px solid var(--line);flex-wrap:wrap}
.stats b{display:block;font-size:23px;color:var(--blue);font-weight:800}
.stats span{font-size:12.5px;color:var(--muted)}
.hero-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:17px 18px;box-shadow:0 14px 38px rgba(11,79,158,.10)}
.hero-card h3{font-size:13.5px;margin-bottom:9px;color:#33465a}
.rowline{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 0;border-top:1px dashed var(--line);font-size:13px;flex-wrap:wrap}
.rowline:first-of-type{border-top:0}
.pill{background:var(--blue-l);color:var(--blue);border-radius:99px;padding:2px 9px;font-size:11px;font-weight:700;white-space:nowrap;margin-left:auto}
.dot{width:8px;height:8px;border-radius:99px;background:#22b573;display:inline-block;margin-right:7px}
/* sections */
section{padding:76px 0}
.sec-head{max-width:46em;margin-bottom:36px}
.sec-head.wide{max-width:none}
.sec-head span{color:var(--blue);font-weight:700;font-size:13.5px;letter-spacing:2px}
h2{font-size:31px;margin:8px 0 10px;letter-spacing:-.3px}
.sec-head p{color:var(--muted);font-size:15.5px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:.2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0f3}
.ico{width:44px;height:44px;border-radius:12px;background:var(--blue-l);color:var(--blue);display:grid;place-items:center;font-size:20px;margin-bottom:14px}
.card h3{font-size:17px;margin-bottom:7px}
.card h4{font-size:16px;margin-bottom:6px;color:var(--blue)}
.card p{font-size:14px;color:var(--muted)}
ul.check{list-style:none;font-size:14.5px;color:#3d5063}
ul.check li{padding:7px 0 7px 26px;position:relative}
ul.check li:before{content:"\2713";position:absolute;left:0;color:#22b573;font-weight:800}
ul.plain{list-style:none;display:grid;gap:9px;font-size:15px;color:#3c4f62;margin-top:10px}
ul.plain li:before{content:"\25CF  ";color:var(--blue)}
/* brand tabs */
.tabs{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:22px}
.tab{border:1px solid var(--line);background:#fff;border-radius:99px;padding:9px 17px;font-size:14px;cursor:pointer;color:#3b4d61;font-weight:600}
.tab.on{background:var(--blue);border-color:var(--blue);color:#fff}
.brands{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.brand{border:1px solid var(--line);border-radius:11px;background:#fff;height:62px;display:grid;place-items:center;
  font-weight:800;color:#5d6f83;letter-spacing:.4px;font-size:15px;transition:.18s;text-align:center;padding:4px}
.brand:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-l)}
/* band / why */
.why{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
/* news */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news article{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;transition:.2s}
.news article:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.news .thumb{height:120px;background:linear-gradient(135deg,#026eb9,#4aa3dd);display:grid;place-items:center;
  color:#fff;font-weight:700;font-size:13px;letter-spacing:1px}
.news .body{padding:18px}
.news h4{font-size:15.5px;line-height:1.5}
.news time{font-size:12.5px;color:var(--muted)}
/* 內頁 */
.pagehero{background:linear-gradient(120deg,#053a63,#026eb9 70%,#1a86cf);color:#fff;padding:52px 0 56px}
.pagehero .k{color:#bfe3ff;font-weight:700;letter-spacing:2.4px;font-size:13px}
.pagehero h1{font-size:34px;margin:8px 0 10px}
.pagehero p{color:#dbeaf8;max-width:46em;font-size:16px}
.crumb{font-size:13px;color:#bfe3ff;margin-bottom:10px}
.crumb a{text-decoration:underline}
main{padding:56px 0}
.grid{display:grid;grid-template-columns:1.35fr .65fr;gap:44px}
h3.h{font-size:24px;margin:0 0 12px}
h3.h:not(:first-of-type){margin-top:36px}
p.lead{font-size:16.5px;color:#3c4f62;margin-bottom:12px}
p.body{font-size:15.5px;color:#3c4f62;margin-bottom:12px}
.side{border:1px solid var(--line);border-radius:var(--r);padding:22px;background:#fff;height:max-content}
.side h3{font-size:16px;margin-bottom:12px}
.side .item{padding:11px 0;border-top:1px dashed var(--line);font-size:14px;color:#42566a}
.side .item:first-of-type{border-top:0}
.side b{color:var(--blue);display:block;font-size:13px}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:14px}
/* 規格表（可橫向捲動） */
.specwrap{overflow-x:auto;margin:16px 0 6px;border:1px solid var(--line);border-radius:var(--r);background:#fff}
table.spec{border-collapse:collapse;width:100%;font-size:13.5px;min-width:620px}
table.spec th,table.spec td{border-bottom:1px solid var(--line);padding:9px 12px;text-align:left;white-space:nowrap;color:#3c4f62}
table.spec thead th{background:var(--blue-l);color:#0b3f66;font-weight:800}
table.spec tbody th{background:#fbfdff;font-weight:700;color:#33465a}
table.spec td.c{text-align:center}
table.spec tbody tr:hover{background:#f7fbff}
table.spec td.yes{color:#22b573;font-weight:800}
.tag{display:inline-block;background:var(--blue-l);color:var(--blue);border-radius:6px;padding:2px 9px;font-size:12.5px;font-weight:700;margin-bottom:8px}
.note{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.65}
/* 技術文件單頁（.docs） */
.docs{display:grid;grid-template-columns:330px 1fr;gap:32px;align-items:start}
.docnav{border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;background:#fff;position:sticky;top:92px}
.docnav h3{font-size:15px;margin-bottom:10px}
.docnav a{display:grid;grid-template-columns:20px 1fr;gap:5px;padding:9px 0;border-top:1px dashed var(--line);
  font-size:13px;color:#3c4f62;line-height:1.55}
.docnav a b{color:var(--blue);font-weight:800}
.docnav a:first-of-type{border-top:0}
.docnav a:hover{color:var(--blue)}
article.doc{border-bottom:1px solid var(--line);padding-bottom:44px;margin-bottom:44px;scroll-margin-top:96px}
article.doc h3 .num{color:inherit}
article.doc:last-of-type{border-bottom:0;margin-bottom:0;padding-bottom:0}
article.doc h3{font-size:32px;line-height:1.35;margin-bottom:14px;display:grid;grid-template-columns:46px 1fr;gap:10px;
  align-items:baseline;background:#22b573;color:#0b1a10;padding:12px 18px;border-radius:10px}
article.doc .mtag{display:inline-block;background:var(--blue-l);color:var(--blue);border-radius:6px;padding:2px 9px;font-size:12px;font-weight:700;margin-bottom:10px}
article.doc p{font-size:15.5px;color:#3c4f62;line-height:1.9;margin-bottom:10px}
article.doc ul{margin:6px 0 12px 22px;font-size:15.5px;color:#3c4f62;line-height:1.9}
article.doc li{margin-bottom:4px}
article.doc pre{background:#f5f9fd;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:8px;
  padding:12px 15px;margin:10px 0 14px;overflow-x:auto;font-size:13.5px;line-height:1.7;color:#22405c;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap;word-break:break-word}
article.doc img{max-width:100%;border:1px solid var(--line);border-radius:10px;margin:8px 0 8px;display:block}
article.doc .cap{font-size:13px;color:var(--muted);margin-bottom:16px}
@media(max-width:980px){.docs{grid-template-columns:1fr}.docnav{position:static}}

.timeline{display:grid;gap:14px;margin-top:16px}
.tl{display:grid;grid-template-columns:96px 1fr;gap:16px;align-items:start;border-left:3px solid var(--blue);padding:4px 0 4px 16px}
.tl b{color:var(--blue);font-size:18px}
.tl span{color:#3c4f62;font-size:15px}
.cta{margin:44px 0 0;border-radius:20px;padding:34px;color:#fff;background:linear-gradient(120deg,#053a63,#026eb9);
  display:flex;justify-content:space-between;gap:20px;align-items:center;flex-wrap:wrap}
.cta h3{font-size:21px}
.cta .btn-p{background:var(--accent);color:#3a2a06}
/* contact */
.contact{background:linear-gradient(180deg,#053a63,#026eb9);color:#fff;border-radius:22px;padding:44px;display:grid;
  grid-template-columns:1fr 1fr;gap:40px;margin:0 22px}
.contact h2{color:#fff;font-size:31px}
.contact p,.contact li{color:#cfe0f3}
.contact .btn-p{background:var(--accent);color:#3a2a06}
form{display:grid;gap:12px}
input,select,textarea{width:100%;padding:12px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.10);color:#fff;font-size:14.5px;font-family:inherit}
input::placeholder,textarea::placeholder{color:#a9c3de}
select option{color:#16202b}
.note-line{font-size:13px;color:#9fc0e0;margin-top:4px}
/* footer */
footer{padding:40px 0 30px;border-top:1px solid var(--line);color:var(--muted);font-size:13.5px;background:#fafcfe}
.fcols{display:grid;grid-template-columns:1.3fr 1fr 1.2fr;gap:26px}
.fcols h4{font-size:14px;color:var(--ink);margin-bottom:10px}
.fcols ul{list-style:none;display:grid;gap:7px}
.fcols ul a:hover{color:var(--blue)}
.fbrand{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.fbrand img{height:44px;width:auto;border-radius:8px}
.copy{margin-top:26px;padding-top:16px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
/* 頁首分層收斂：先縮間距 → 再收電話 → 最後（≤980）才收選單。絕不讓文字換行 */
/* 基礎值已先縮一號（見上方 header 區），這裡再逐層收斂 */
@media(max-width:1320px){
  .nav{gap:13px}
  nav ul{gap:11px;font-size:13.4px}
  .nav-cta{gap:8px}
  .nav-cta .btn-line{padding:7px 11px;font-size:12.8px}
  .tel{font-size:13.2px}
}
@media(max-width:1240px){
  .tel{display:none}
  .nav{gap:12px}
  nav ul{gap:10px;font-size:13px}
}
@media(max-width:1180px){
  .brdesk{display:none}
}
@media(max-width:980px){
  .hero .wrap{grid-template-columns:1fr;padding:52px 22px}
  h1{font-size:22px}
  h1 br{display:none}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .grid3,.grid2,.news,.cards{grid-template-columns:1fr}
  .brands{grid-template-columns:repeat(3,1fr)}
  .grid{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr;padding:30px;margin:0 14px}
  .fcols{grid-template-columns:1fr}
  nav ul{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;
    gap:0;padding:10px 22px 18px;border-bottom:1px solid var(--line)}
  nav ul.open{display:flex}
  nav ul li{padding:9px 0;border-bottom:1px solid var(--line)}
  .burger{display:block;margin-left:8px}
  .tel{display:none}
  .pagehero h1{font-size:26px}
}
@media(max-width:620px){
  .nav{gap:10px;height:64px}
  .logo{font-size:16px;gap:9px}
  .logo img{height:38px}
  .logo small{display:none}
  .btn{padding:9px 12px;font-size:13px}
  .nav-cta{gap:8px}
}
/* ===== 白天／黑夜主題切換（2026-09-16 新增）===== */
:root{color-scheme:light}
.themebtn{background:none;border:1px solid var(--line);border-radius:10px;width:40px;height:40px;padding:0;
  display:grid;place-items:center;font-size:17px;line-height:1;cursor:pointer;color:var(--ink);flex:0 0 auto;
  transition:.18s}
.themebtn:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-l)}
body{transition:background-color .25s ease,color .25s ease}
[data-theme="dark"]{color-scheme:dark;
  --blue:#4aa3dd;--blue-d:#3b93cd;--blue-l:#16283a;--ink:#e8f0f8;--muted:#9fb3c8;
  --line:#243a4f;--bg:#0e1620;--bg2:#131f2b;--shadow:0 10px 30px rgba(0,0,0,.45)}
[data-theme="dark"] header{background:rgba(14,22,32,.95)}
[data-theme="dark"] nav ul{color:#c7d6e4}
[data-theme="dark"] .btn-o{border-color:#3d6f96;color:#9ad4ff}
[data-theme="dark"] .btn-o:hover{background:#16283a}
[data-theme="dark"] input::placeholder,[data-theme="dark"] textarea::placeholder{color:#b6cde3}
[data-theme="dark"] .hero{background:
  radial-gradient(1100px 460px at 82% -12%, #12304a 0%, rgba(18,48,74,0) 62%),
  linear-gradient(180deg,#0e1620,#111d29)}
[data-theme="dark"] .eyebrow{background:#16232f}
[data-theme="dark"] .lede,[data-theme="dark"] .lede-list .li{color:#b9c9d8}
[data-theme="dark"] .hero-card,[data-theme="dark"] .card,[data-theme="dark"] .side,[data-theme="dark"] .tab,
[data-theme="dark"] .brand,[data-theme="dark"] .news article,[data-theme="dark"] .specwrap,
[data-theme="dark"] .docnav{background:#16212e}
[data-theme="dark"] .hero-card h3{color:#cfe0ee}
[data-theme="dark"] .card:hover{border-color:#2f4a63}
[data-theme="dark"] ul.check,[data-theme="dark"] ul.plain,[data-theme="dark"] p.lead,[data-theme="dark"] p.body,
[data-theme="dark"] .side .item,[data-theme="dark"] table.spec td,[data-theme="dark"] article.doc p,
[data-theme="dark"] article.doc ul,[data-theme="dark"] .tl span,[data-theme="dark"] .docnav a,
[data-theme="dark"] .tab,[data-theme="dark"] .brand{color:#b9c9d8}
[data-theme="dark"] table.spec tbody th{background:#1b2836;color:#cfe0ee}
[data-theme="dark"] table.spec thead th{color:#dbeaf8}
[data-theme="dark"] table.spec tbody tr:hover{background:#1b2836}
[data-theme="dark"] article.doc pre{background:#131f2b;color:#a9c7e0}
[data-theme="dark"] article.doc img{border-color:var(--line)}
[data-theme="dark"] footer{background:#0b131b}
[data-theme="dark"] .news .thumb{background:linear-gradient(135deg,#0b4a7d,#2f7fc0)}
[data-theme="dark"] .pill{background:#12324c;color:#8fd0ff}
[data-theme="dark"] .rowline{color:#c7d6e4}
[data-theme="dark"] footer .copy{color:#93a9bd}
[data-theme="dark"] .card p,[data-theme="dark"] .sec-head p,[data-theme="dark"] .note{color:#a8bccd}
@media(max-width:980px){[data-theme="dark"] nav ul{background:#16212e}}
/* 主題鈕的響應式尺寸放在主題區最後：前面的媒體查詢會被上面 .themebtn 蓋掉（順序坑） */
@media(max-width:1320px){.themebtn{width:36px;height:36px;font-size:15px;border-radius:9px}}
@media(max-width:620px){.themebtn{width:34px;height:34px;font-size:14px}}