/* 網站外殼：導覽、首頁、說明頁。色彩與落點工具共用同一組色票（淺色紙張系，刻意單一亮色主題） */
:root{
  --bg:#faf8f2; --surface:#ffffff; --surface-2:#f3f1e8;
  --ink:#2b2a25; --ink-2:#5f5e54; --muted:#8a887d;
  --line:#e7e4d7; --accent:#4a7ba6; --accent-2:#c6742a; --accent-2-soft:#fbeedd;
  color-scheme: light;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{margin:0; background:var(--bg); color:var(--ink); font-family:'Noto Sans TC', system-ui, -apple-system, "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif; font-size:15px; line-height:1.7;}
h1,h2,h3{font-family:'Noto Serif TC','Noto Sans TC',serif; font-weight:700; margin:0; text-wrap:balance; line-height:1.35;}
a{color:var(--accent);}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent); outline-offset:2px;}
[hidden]{display:none!important;}
.skip{position:absolute; left:-999px; top:0; background:var(--ink); color:#fff; padding:8px 14px; z-index:100;}
.skip:focus{left:8px; top:8px;}

/* 導覽 */
.site-head{position:sticky; top:0; z-index:40; background:rgba(250,248,242,.94); backdrop-filter:blur(8px); border-bottom:1px solid var(--line);}
.site-head-in{max-width:1180px; margin:0 auto; padding:10px 16px; display:flex; flex-wrap:wrap; align-items:center; gap:6px 22px;}
.brand{display:inline-flex; align-items:center; gap:9px; text-decoration:none; color:var(--ink); font-family:'Noto Serif TC',serif; font-weight:700; font-size:17px;}
.brand-mark{display:inline-grid; place-items:center; width:30px; height:30px; border-radius:8px; background:var(--accent); color:#faf8f2; font-size:17px; line-height:1;}
.site-nav{display:flex; flex-wrap:wrap; gap:2px 6px; margin-left:auto;}
.site-nav a{padding:6px 11px; border-radius:99px; text-decoration:none; color:var(--ink-2); font-size:14px; font-weight:500;}
.site-nav a:hover{background:var(--surface-2); color:var(--ink);}
.site-nav a[aria-current="page"]{background:var(--surface-2); color:var(--accent); font-weight:700;}
@media (max-width:560px){ .site-nav{margin-left:0; width:100%;} .site-nav a{padding:5px 9px; font-size:13.5px;} }

/* 版心 */
main{display:block; min-height:60vh;}
.wrap-s{max-width:980px; margin:0 auto; padding-inline:16px;}

/* 首頁 */
.hero{padding-block:clamp(36px,7vw,84px) clamp(28px,5vw,56px); background:linear-gradient(180deg,#f3f1e8 0,var(--bg) 100%); border-bottom:1px solid var(--line);}
.eyebrow{margin:0 0 10px; font-size:13px; font-weight:600; letter-spacing:.14em; color:var(--accent-2);}
.hero h1{font-size:clamp(28px,5.4vw,46px); color:var(--ink); margin-bottom:16px;}
.lead{font-size:clamp(15.5px,2.2vw,18px); color:var(--ink-2); max-width:44em; margin:0 0 24px;}
.cta-row{display:flex; flex-wrap:wrap; gap:12px; margin-bottom:12px;}
.btn-cta{display:inline-flex; align-items:center; padding:11px 22px; border-radius:99px; font-weight:600; font-size:15.5px; text-decoration:none; color:var(--accent); background:var(--surface); border:1.5px solid var(--accent);}
.btn-cta.primary{background:var(--accent); color:#fff;}
.btn-cta:hover{filter:brightness(.95);}
.fine{font-size:12.5px; color:var(--muted); margin:6px 0 0;}
.sec{padding-block:clamp(30px,5vw,56px);}
.sec.alt{background:var(--surface-2); border-block:1px solid var(--line);}
.sec h2{font-size:clamp(21px,3.2vw,28px); margin-bottom:22px; color:var(--ink);}
.two{display:grid; grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr)); gap:18px;}
.feat{background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:22px 22px 20px; min-width:0; display:flex; flex-direction:column; gap:8px;}
.feat-tag{margin:0; font-size:12px; font-weight:600; color:var(--accent-2); letter-spacing:.06em;}
.feat h3{font-size:22px; color:var(--accent);}
.feat p{margin:0; color:var(--ink-2);}
.tick{list-style:none; margin:4px 0 6px; padding:0; display:flex; flex-direction:column; gap:7px; color:var(--ink-2); font-size:14px;}
.tick li{position:relative; padding-left:22px;}
.tick li::before{content:""; position:absolute; left:2px; top:.6em; width:10px; height:6px; border-left:2px solid var(--accent); border-bottom:2px solid var(--accent); transform:rotate(-45deg) translateY(-50%);}
.text-link{margin-top:auto; padding-top:6px; font-weight:600; text-decoration:none;}
.text-link:hover{text-decoration:underline;}
.steps{list-style:none; margin:0; padding:0; display:grid; grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr)); gap:16px;}
.steps li{display:flex; gap:14px; align-items:flex-start; min-width:0;}
.steps .n{flex:none; width:34px; height:34px; border-radius:50%; background:var(--accent); color:#fff; display:grid; place-items:center; font-weight:700; font-family:'Noto Serif TC',serif;}
.steps h3{font-size:17px; margin-bottom:4px;}
.steps p{margin:0; color:var(--ink-2); font-size:14px;}
.notes{display:grid; grid-template-columns:repeat(auto-fit,minmax(min(100%,270px),1fr)); gap:18px 28px;}
.notes h3{font-size:16.5px; margin-bottom:6px; color:var(--ink);}
.notes p{margin:0; color:var(--ink-2); font-size:14px;}

/* 內頁文章 */
.prose{padding-block:clamp(24px,4vw,44px) 56px; max-width:760px;}
.prose h1{font-size:clamp(26px,4vw,34px); margin-bottom:14px;}
.prose h2{font-size:21px; margin:34px 0 10px; padding-top:6px; scroll-margin-top:70px;}
.prose p,.prose li{color:var(--ink-2);}
.prose li{margin-bottom:6px;}
.prose strong{color:var(--ink);}
.toc{display:flex; flex-wrap:wrap; gap:6px 10px; margin:0 0 6px;}
.toc a{padding:4px 12px; border:1px solid var(--line); border-radius:99px; background:var(--surface); font-size:13.5px; text-decoration:none;}
.faq details{background:var(--surface); border:1px solid var(--line); border-radius:12px; padding:0 16px; margin-bottom:10px;}
.faq summary{cursor:pointer; padding:13px 0; font-weight:600; color:var(--ink); list-style:none; display:flex; justify-content:space-between; gap:12px;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"＋"; color:var(--accent); flex:none;}
.faq details[open] summary::after{content:"－";}
.faq details p{margin:0 0 14px;}

/* 頁尾 */
.site-foot{border-top:1px solid var(--line); background:var(--surface-2); padding-block:22px calc(26px + env(safe-area-inset-bottom,0px)); margin-top:24px;}
.site-foot-in{max-width:1180px; margin:0 auto; padding-inline:16px; font-size:12.5px; color:var(--ink-2); line-height:1.75;}
.site-foot p{margin:0 0 8px;}
.foot-links{display:flex; flex-wrap:wrap; gap:4px 18px;}
.foot-links span{color:var(--muted);}

@media (prefers-reduced-motion:no-preference){ .btn-cta{transition:filter .15s;} }