html,body{margin:0}img{max-width:100%}[hidden]{display:none!important}

/* v4＝第三版的版面＋深藍金線版的莊重與動態（單一深色主題，刻意不做淺色）。
   Layout: 學 Dr.Legal MCP 頁的做法——系統字體、大量留白、1px 細線、白色橫帶與紙色交替、左對齊大標第二行上色、
   數字大而單位小、工具方塊選單、分組資料表。識別換成我們自己的：冷灰紙＋墨藍黑＋靛青。
   動態只留三處：首屏右側緩慢的關係網、數字跑表、切換面板淡入。 */
:root{
  color-scheme:dark;
  --paper:#0a1120; --band:#0f1829; --tint:#15213a; --ink:#ece7da; --sub:#a2abbd; --faint:#7a8498;
  --line:rgba(201,162,74,.22); --brand:#d2ab55; --brand-ink:#0a1120; --warn:#e59377;
  --f:"PingFang TC","Microsoft JhengHei","微軟正黑體","Noto Sans TC",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{background:var(--paper)}
body{background:var(--paper);color:var(--ink);font-family:var(--f);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.wide{max-width:1200px;margin:0 auto;padding-left:max(24px,env(safe-area-inset-left,0px));padding-right:max(24px,env(safe-area-inset-right,0px))}
h1,h2,h3,p{margin:0}
h1,h2{text-wrap:balance}
.eyebrow{font-size:12px;font-weight:650;letter-spacing:2px;color:var(--brand);text-transform:uppercase}
.sub{color:var(--sub)}
.tiny{font-size:12px;color:var(--faint)}
.tbd{color:var(--warn)}
.tbd::before{content:"待定"}
.tbd:not(:empty)::before{content:"待定："}

/* 頁首 */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:20;background:var(--band)}
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--band);border-bottom:1px solid var(--line)}
header .wide{display:flex;align-items:center;gap:20px;min-height:72px;flex-wrap:wrap;padding-block:10px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand svg{width:38px;height:38px}
.brand b{display:block;font-size:20px;font-weight:700;line-height:1.2;letter-spacing:.5px}
.brand small{display:block;font-size:11px;color:var(--faint);letter-spacing:1px;line-height:1.2}
.prod{padding-left:20px;border-left:1px solid var(--line);font-size:14px;color:var(--brand);font-weight:500}
header nav{margin-left:auto;display:flex;gap:28px;font-size:14px;font-weight:600;align-items:center}
header nav a{color:var(--ink)}
.btn{font:inherit;font-weight:600;display:inline-flex;align-items:center;gap:10px;border-radius:9px;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s}
.btn.primary{background:var(--brand);color:var(--brand-ink);border:1px solid var(--brand);padding:13px 23px}
.btn.primary:hover{text-decoration:none;transform:translateY(-1px);box-shadow:0 0 26px rgba(210,171,85,.4)}
.btn.small{padding:7px 16px;font-size:14px}
.btn.plain{background:var(--band);color:var(--ink);border:1px solid var(--line);padding:7px 16px;font-size:14px}

/* 首屏 */
.hero{position:relative;overflow:hidden}
.hero{background:radial-gradient(ellipse at 75% 35%,#182b52 0%,var(--paper) 62%)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.8;mask-image:linear-gradient(90deg,rgba(0,0,0,.12),#000 55%)}
.hero .wide{position:relative;pointer-events:none;padding-block:96px 80px;display:flex;flex-direction:column;gap:22px}
.hero h1{font-size:clamp(34px,5.1vw,52px);font-weight:700;line-height:1.5;letter-spacing:-1.5px}
.hero h1 em{font-style:normal;display:block;background:linear-gradient(100deg,#c9a24a 0%,#e6c878 40%,#fff4d0 50%,#e6c878 60%,#c9a24a 100%);background-size:250% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shine 7s linear infinite}
@keyframes shine{from{background-position:100% 0}to{background-position:-150% 0}}
.hero a,.hero .btn{pointer-events:auto}
.hero .lede{font-size:16px;color:var(--sub);max-width:46em}
.cta{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:6px}
.cta .text{font-size:14px;font-weight:500}
.checks{display:flex;gap:6px 24px;flex-wrap:wrap;list-style:none;padding:0;margin:0;font-size:12px;color:var(--sub)}
.checks li::before{content:"✓";margin-right:8px;color:var(--brand)}

/* 數字帶 */
.summary{background:var(--band);border-block:1px solid var(--line)}
.summary .grid{display:grid;grid-template-columns:repeat(4,1fr)}
.summary .cell{padding:22px 24px 18px;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:2px}
.summary .cell:first-child{border-left:0;padding-left:0}
.summary .k{font-size:12px;color:var(--sub)}
.summary .v{font-size:clamp(24px,2.9vw,34px);font-weight:600;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.4;letter-spacing:-.5px}
.summary .v small{font-size:12px;font-weight:400;color:var(--sub);margin-left:6px;letter-spacing:0}
.summary .d{font-size:12px;color:var(--sub)}
.summary .foot{border-top:1px solid var(--line);padding-block:10px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:11px;color:var(--faint)}

.ticker{overflow:hidden;border-bottom:1px solid var(--line);padding-block:12px;mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.ticker .track{display:flex;gap:44px;width:max-content;animation:scroll 70s linear infinite;color:var(--sub);font-size:13px;letter-spacing:2px}
.ticker .track span::before{content:"◆";color:var(--brand);font-size:8px;margin-right:14px;vertical-align:middle}
@keyframes scroll{to{transform:translateX(-50%)}}
.demo{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:center}
.demo ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:20px;counter-reset:d}
.demo ol li{counter-increment:d;display:grid;grid-template-columns:34px 1fr;gap:14px}
.demo ol li::before{content:counter(d);width:30px;height:30px;border:1px solid var(--brand);color:var(--brand);display:grid;place-items:center;font-size:13px;font-weight:600;border-radius:50%}
.demo ol b{display:block;font-size:16px;font-weight:650}
.demo ol span{font-size:13px;color:var(--sub)}
.chat{background:var(--band);border:1px solid var(--line);border-radius:10px;padding:20px;display:flex;flex-direction:column;gap:12px;font-size:14px;min-height:300px;box-shadow:0 30px 80px rgba(0,0,0,.45),inset 0 1px 0 rgba(230,200,120,.14)}
.chat .bar{display:flex;justify-content:space-between;font-size:11px;color:var(--faint);border-bottom:1px solid var(--line);padding-bottom:10px}
.chat .me{align-self:flex-end;background:rgba(210,171,85,.14);border:1px solid var(--line);border-radius:10px 10px 2px 10px;padding:8px 14px;max-width:88%}
.chat .tool{font-size:12px;color:var(--brand);display:flex;gap:8px;align-items:center}
.chat .tool::before{content:"";width:11px;height:11px;border:2px solid var(--brand);border-top-color:transparent;border-radius:50%;animation:spin 1s linear infinite}
.chat .tool.done::before{animation:none;border-top-color:var(--brand)}
@keyframes spin{to{transform:rotate(360deg)}}
.chat .ai{display:flex;flex-direction:column;gap:6px;min-height:5.5em}
.chat .ref{font-size:13px;color:var(--brand);border-left:2px solid var(--brand);padding-left:10px}
.caret::after{content:"▍";color:var(--brand);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
section.sec{padding-block:60px}
.sec-head{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.sec-head h2{font-size:clamp(24px,3vw,30.7px);font-weight:650;letter-spacing:-.7px;line-height:1.5}
.sec-head p{font-size:14px;color:var(--sub)}

/* 工具選單 */
.tools{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-bottom:22px}
.tools button{font:inherit;background:var(--band);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:16px 8px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;transition:border-color .15s,background .15s,transform .15s}
.tools button:hover{transform:translateY(-2px);border-color:var(--brand)}
.tools button[aria-selected="true"]{background:var(--tint);border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand)}
.tools i{font-style:normal;font-size:22px;color:var(--brand);font-family:var(--mono);line-height:1.6}
.tools b{font-size:14px;font-weight:600}
.tools small{font-size:11px;color:var(--faint)}
.panel{background:var(--band);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.panel-head{padding:20px 24px;border-bottom:1px solid var(--line)}
.panel-head h3{font-size:20px;font-weight:600}
.panel-body{display:grid;grid-template-columns:1fr 1fr;gap:32px;padding:24px}
.panel-body.swap{animation:fade .35s ease}
@keyframes fade{from{opacity:.2;transform:translateY(4px)}to{opacity:1;transform:none}}
.urlbox{border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-top:14px}
.urlbox .t{display:flex;justify-content:space-between;padding:8px 14px;font-size:11px;color:var(--faint);border-bottom:1px solid var(--line);background:var(--paper)}
.urlbox .u{padding:14px;font-family:var(--mono);font-size:13px;background:var(--paper)}
.panel .note{font-size:12px;color:var(--sub);margin-top:14px;line-height:1.9}
ol.steps{list-style:none;margin:0;padding:0;counter-reset:s;display:flex;flex-direction:column;gap:14px;font-size:14px}
ol.steps li{counter-increment:s;display:grid;grid-template-columns:26px 1fr;gap:12px}
ol.steps li::before{content:counter(s);width:22px;height:22px;margin-top:3px;border-radius:50%;background:var(--tint);color:var(--brand);font-size:12px;font-weight:600;display:grid;place-items:center}

/* 看圖操作：畫出來的示意畫面，自動輪播 */
.shots{border-top:1px solid var(--line);padding:20px 24px 24px}
.shots-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:baseline;margin-bottom:14px}
.shots-head b{font-size:14px}
.shots-head button{font:inherit;font-size:12px;background:none;border:1px solid var(--line);color:var(--sub);border-radius:999px;padding:2px 12px;cursor:pointer}
.frames{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.frame{background:var(--paper);border:1px solid var(--line);border-radius:10px;overflow:hidden;cursor:pointer;transition:border-color .3s,box-shadow .3s,opacity .3s;opacity:.55;text-align:left;font:inherit;color:inherit;padding:0;display:flex;flex-direction:column}
.frame.on{opacity:1;border-color:var(--brand);box-shadow:0 0 0 1px var(--brand),0 18px 40px rgba(0,0,0,.4)}
.win{height:190px;position:relative;font-size:11px;display:grid;grid-template-columns:64px 1fr;background:#f6f6f3;color:#2a2a2a}
.win.term{display:block;background:#11151c;color:#cfd6e2;font-family:var(--mono);padding:26px 14px 0;line-height:1.9}
.win::before{content:"● ● ●";position:absolute;top:4px;left:8px;font-size:7px;letter-spacing:2px;color:#b9b9b2}
.side{background:#ecece7;padding:22px 6px 0;display:flex;flex-direction:column;gap:6px}
.side i{height:6px;border-radius:3px;background:#d3d3cb;display:block}
.side i.sel{background:#8a8a80}
.pane{padding:22px 12px 0;display:flex;flex-direction:column;gap:7px;min-width:0}
.pane h4{margin:0;font-size:12px;font-weight:650;color:#1d1d1d}
.pane .li{display:flex;justify-content:space-between;align-items:center;border:1px solid #ddddd5;border-radius:5px;padding:4px 8px;background:#fff}
.pane .fld{border:1px solid #ccccc4;border-radius:5px;padding:4px 8px;background:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pane .fld small{display:block;font-size:9px;color:#8a8a80}
.pane .bt{align-self:flex-end;background:#2a2a2a;color:#fff;border-radius:5px;padding:3px 10px}
.pane .me{align-self:flex-end;background:#e4e4dc;border-radius:8px;padding:4px 8px;max-width:95%}
.pane .badge{align-self:flex-start;border:1px solid #c9a24a;color:#8a6a1c;border-radius:999px;padding:1px 8px;background:#fff8e6}
.pane .ans{border-left:2px solid #c9a24a;padding-left:6px;color:#444}
.hit{position:relative;outline:2px solid #d2ab55;outline-offset:2px;border-radius:5px}
.frame.on .hit::after{content:"";position:absolute;right:-6px;bottom:-8px;width:14px;height:14px;border-radius:50%;background:rgba(210,171,85,.9);box-shadow:0 0 0 0 rgba(210,171,85,.7);animation:tap 1.3s infinite}
@keyframes tap{70%{box-shadow:0 0 0 12px rgba(210,171,85,0)}100%{box-shadow:0 0 0 0 rgba(210,171,85,0)}}
.shot{display:block;width:100%;height:190px;object-fit:cover;object-position:right top;background:#fff}
.shot.s3{object-fit:contain}
.shot.term{object-fit:contain;object-position:left top;background:#11151c}
.cap{padding:10px 12px;font-size:12px;color:var(--sub);display:grid;grid-template-columns:22px 1fr;gap:8px;border-top:1px solid var(--line)}
.cap span{width:20px;height:20px;border-radius:50%;background:var(--tint);color:var(--brand);display:grid;place-items:center;font-weight:600;font-size:11px}
.frame.on .cap{color:var(--ink)}

/* 資料分組 */
.catalog{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.group{background:var(--band);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.group.full{grid-column:1/-1}
.group-head{background:var(--tint);padding:16px 24px;display:grid;grid-template-columns:28px 1fr;row-gap:2px}
.group-head span{font-size:12px;color:var(--brand);font-weight:600;align-self:center}
.group-head h3{font-size:18px;font-weight:650}
.group-head p{grid-column:2;font-size:12px;color:var(--sub)}
.cols{display:flex;justify-content:space-between;padding:8px 24px;font-size:11px;color:var(--faint);border-bottom:1px solid var(--line)}
.row{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:16px 24px;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:0}
.row b{display:block;font-size:14px;font-weight:650}
.row small{display:block;font-size:12px;color:var(--sub)}
.row .n{font-size:18px;font-weight:600;font-variant-numeric:tabular-nums;white-space:nowrap}
.row .n small{display:inline;font-size:11px;font-weight:400;margin-left:5px}

/* 左右兩欄段落 */
.about{background:var(--tint)}
.split{display:grid;grid-template-columns:1fr 1.3fr;gap:56px;padding-block:55px}
.split h2{font-size:clamp(24px,3vw,30.7px);font-weight:650;letter-spacing:-.7px;line-height:1.5;margin-top:10px}
.split .left p{font-size:14px;color:var(--sub);margin-top:14px;max-width:30em}
.uses{display:flex;flex-direction:column;gap:22px}
.uses div{display:grid;grid-template-columns:28px 1fr;gap:14px}
.uses svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.6;margin-top:3px}
.uses b{display:block;font-size:15px;font-weight:650}
.uses span{font-size:13px;color:var(--sub)}
.letter{background:var(--band);border:1px solid var(--line);border-left:2px solid var(--brand);border-radius:10px;padding:30px 34px;max-width:780px;display:flex;flex-direction:column;gap:14px;font-size:15px;line-height:2}
.letter .sig{font-weight:650;margin-top:6px}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-size:14px;font-weight:600}
.faq summary::marker{color:var(--brand);font-size:11px}
.faq p{font-size:14px;color:var(--sub);margin-top:8px;padding-left:16px}
.legal{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.legal .group ul{margin:0;padding:18px 24px 20px 42px;display:flex;flex-direction:column;gap:8px;font-size:14px}

footer{background:var(--band);border-top:1px solid var(--line)}
footer .wide{padding-block:26px;font-size:12px;color:var(--faint);display:flex;flex-direction:column;gap:6px}

/* 登入 */
dialog{border:1px solid var(--brand);border-radius:12px;padding:28px;width:min(420px,calc(100% - 32px));background:var(--band);color:var(--ink);position:relative;box-shadow:0 24px 60px rgba(20,28,45,.25)}
dialog[open]{animation:fade .25s ease}
dialog::backdrop{background:rgba(16,20,28,.5)}
.dlg{display:flex;flex-direction:column;gap:12px}
.dlg h2{font-size:22px;font-weight:650;letter-spacing:-.5px}
.oauth{font:inherit;font-weight:500;display:flex;align-items:center;justify-content:center;gap:10px;padding:11px;border:1px solid var(--line);border-radius:9px;background:#fff;color:#1f1f1f;cursor:pointer}
.oauth svg{width:18px;height:18px}
.or{display:flex;align-items:center;gap:10px;color:var(--faint);font-size:12px}
.or::before,.or::after{content:"";flex:1;border-top:1px solid var(--line)}
input[type=email]{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:var(--paper);color:var(--ink)}
.x{position:absolute;top:10px;right:14px;font-size:22px;background:none;border:0;color:var(--faint);cursor:pointer}
.mock{margin-top:14px;padding-top:10px;border-top:1px dashed var(--line)}
.acct{display:flex;flex-direction:column;gap:12px}
.acct b{display:block;font-size:18px;color:var(--brand)}

@media (max-width:900px){
  header nav a{display:none}
  .prod{display:none}
  .hero canvas{opacity:.35}
  .demo{grid-template-columns:1fr}
  .frames{grid-template-columns:1fr}
  .summary .grid{grid-template-columns:1fr 1fr}
  .summary .cell:nth-child(3){border-left:0;padding-left:0}
  .summary .cell:nth-child(n+3){border-top:1px solid var(--line)}
  .tools{grid-template-columns:repeat(3,1fr)}
  .panel-body,.catalog,.split,.legal{grid-template-columns:1fr}
  .split{gap:28px}
  .hero .wide{padding-block:44px 40px}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

header nav a.on{color:var(--brand)}
.page-head{padding-block:64px 8px}
.page-head h1{font-size:clamp(30px,4.4vw,44px);font-weight:700;letter-spacing:-1px;line-height:1.4;margin-top:8px}
.page-head p{color:var(--sub);margin-top:10px;max-width:46em}
.next{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding-block:20px 10px}
.next a{display:block;background:var(--band);border:1px solid var(--line);border-radius:10px;padding:22px;color:var(--ink);transition:border-color .2s,transform .2s}
.next a:hover{text-decoration:none;border-color:var(--brand);transform:translateY(-2px)}
.next b{display:block;font-size:17px;margin-bottom:4px}.next span{font-size:13px;color:var(--sub)}
.next i{font-style:normal;color:var(--brand);float:right}
.doc{max-width:780px}.doc h2{font-size:20px;margin:28px 0 8px}.doc ul{padding-left:1.3em;display:flex;flex-direction:column;gap:8px}
footer .links{display:flex;gap:20px;flex-wrap:wrap}
footer .links a{color:var(--sub)}
@media (max-width:900px){.next{grid-template-columns:1fr}header nav a{display:inline}header nav{gap:14px;font-size:13px;flex-wrap:wrap;margin-left:0;width:100%}}