/* 版面：單欄閱讀為主，服務比較用兩欄；手機底部固定 LINE 按鈕 */
:root{
  --paper:#f4f6f2; --surface:#ffffff; --ink:#1c2a26; --muted:#56655f; --rule:#d7ddd6;
  --pine:#22483e; --pine-soft:#e3ece7; --grain:#a8761f; --line:#06c755; --line-ink:#ffffff;
  --tbd-bg:#fff1b8; --tbd-ink:#5c4400;
  --f-display:"Noto Serif TC","Songti TC","PMingLiU",serif;
  --f-body:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
  --wrap:1080px; --read:40rem;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#111916; --surface:#18221e; --ink:#e4ebe7; --muted:#9caba4; --rule:#2b3a34;
  --pine:#8cc4b1; --pine-soft:#1f302a; --grain:#dcae55; --tbd-bg:#4a3d10; --tbd-ink:#ffe59a; color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#111916; --surface:#18221e; --ink:#e4ebe7; --muted:#9caba4; --rule:#2b3a34;
  --pine:#8cc4b1; --pine-soft:#1f302a; --grain:#dcae55; --tbd-bg:#4a3d10; --tbd-ink:#ffe59a; color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.8;letter-spacing:.02em}
a{color:var(--pine)}
a:focus-visible,button:focus-visible{outline:3px solid var(--grain);outline-offset:2px}
img{max-width:100%}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:20px}
h1,h2,h3{font-family:var(--f-display);font-weight:700;line-height:1.35;text-wrap:balance;letter-spacing:.03em;margin:0}
h1{font-size:clamp(1.9rem,5vw,2.9rem)}
h2{font-size:clamp(1.45rem,3.4vw,1.9rem)}
h3{font-size:1.15rem}
p{margin:0}
.tbd{background:var(--tbd-bg);color:var(--tbd-ink);padding:0 .25em;border-radius:3px;font-size:.92em;white-space:normal}

/* header */
.site-head{background:var(--surface);border-bottom:1px solid var(--rule);position:sticky;top:env(safe-area-inset-top,0px);z-index:20}
.site-head .wrap{display:flex;align-items:center;gap:24px;min-height:64px;flex-wrap:wrap}
.logo{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:var(--ink)}
.logo b{font-family:var(--f-display);font-size:1.35rem;letter-spacing:.12em}
.logo small{color:var(--muted);font-size:.8rem;letter-spacing:.1em}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{text-decoration:none;color:var(--ink);padding:6px 12px;border-radius:999px;font-size:.95rem}
.nav a:hover{background:var(--pine-soft)}
.nav a[aria-current="page"]{background:var(--pine);color:var(--surface)}
@media (max-width:760px){
  .site-head .wrap{gap:0;padding-block:8px}
  .nav{margin:4px -20px 0;padding:0 14px;width:calc(100% + 40px);flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
  .nav a{white-space:nowrap;font-size:.9rem}
}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-weight:700;border-radius:10px;padding:12px 22px;font-size:1rem;border:2px solid transparent}
.btn-line{background:var(--line);color:var(--line-ink)}
.btn-line:hover{filter:brightness(.95)}
.btn-ghost{border-color:var(--pine);color:var(--pine)}
.btn-ghost:hover{background:var(--pine-soft)}
.btn-call{border-color:currentColor;color:inherit}
.pitch{background:var(--surface);border:1px solid var(--rule);border-left:6px solid var(--pine);border-radius:14px;padding:28px;display:flex;flex-direction:column;gap:14px;max-width:760px}
.pitch-eq{font-size:1.35rem;font-weight:800;color:var(--pine)}
.pitch ul{margin:0;padding-left:1.2em;display:flex;flex-direction:column;gap:6px}
.pitch-close{font-size:1.15rem;font-weight:700}
.btn-call-solid{background:var(--pine);color:#fff}
.plan.pro{max-width:760px}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}

/* sections */
main section{padding-block:56px}
main section + section{border-top:1px solid var(--rule)}
.eyebrow{font-size:.85rem;letter-spacing:.18em;color:var(--grain);font-weight:700;margin-bottom:10px}
.lead{font-size:1.1rem;color:var(--muted);max-width:var(--read)}
.stack{display:flex;flex-direction:column;gap:18px}
.prose{max-width:var(--read);display:flex;flex-direction:column;gap:16px}
.prose h2{margin-top:24px}
.prose ul,.prose ol{margin:0;padding-left:1.4em;display:flex;flex-direction:column;gap:6px}

/* hero */
.hero{padding-block:56px 48px}
.hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:48px;align-items:center}
.hero-grid > *{min-width:0}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr;gap:32px}}
.chores{background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:24px}
.chores h2{font-size:1.05rem;font-family:var(--f-body);letter-spacing:.06em;color:var(--muted);margin-bottom:12px}
.chores ul{list-style:none;margin:0;padding:0}
.chores li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px dashed var(--rule)}
.chores li:last-child{border-bottom:0}
.chores li span:last-child{color:var(--pine);font-weight:700;white-space:nowrap}

/* compare */
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}
@media (max-width:960px){.compare{grid-template-columns:1fr 1fr}}
@media (max-width:720px){.compare{grid-template-columns:1fr}}
.plan{background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:26px;display:flex;flex-direction:column;gap:14px;min-width:0}
.plan h3{font-size:1.4rem}
.plan .tag{font-size:.95rem;color:var(--muted)}
.plan dl{margin:0;display:grid;grid-template-columns:6.5em 1fr;gap:8px 12px}
.plan dt{color:var(--muted);font-size:.92rem}
.plan dd{margin:0}
.plan .btn{align-self:flex-start;margin-top:auto}

/* steps */
.steps{list-style:none;margin:28px 0 0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
@media (max-width:900px){.steps{grid-template-columns:1fr}}
.steps li{counter-increment:s;display:flex;flex-direction:column;gap:6px;min-width:0}
.steps li::before{content:counter(s);font-family:var(--f-display);font-size:1.6rem;color:var(--grain);font-weight:700;line-height:1}
@media (max-width:900px){.steps li{display:grid;grid-template-columns:2.2rem 1fr;column-gap:8px}.steps li::before{grid-row:span 2}}
.steps b{font-size:1.02rem}
.steps p{color:var(--muted);font-size:.95rem}

/* grid of promises */
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 40px;margin-top:28px}
@media (max-width:720px){.grid2{grid-template-columns:1fr}}
.grid2 > div{display:flex;flex-direction:column;gap:6px;min-width:0}
.grid2 p{color:var(--muted)}

/* areas */
.areas{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.areas span{border:1px solid var(--rule);background:var(--surface);border-radius:999px;padding:6px 16px}
.areas a{border:1px solid var(--pine);background:var(--pine-soft);border-radius:999px;padding:6px 16px;text-decoration:none;font-weight:700}
.areas small{display:block;width:100%;color:var(--muted)}

/* faq */
.faq{display:flex;flex-direction:column;gap:0;margin-top:20px;max-width:var(--read)}
.faq details{border-bottom:1px solid var(--rule);padding-block:14px}
.faq summary{cursor:pointer;font-weight:700;list-style-position:outside}
.faq details p{margin-top:8px;color:var(--muted)}

/* table */
.table-scroll{overflow-x:auto;margin-top:8px}
table{border-collapse:collapse;width:100%;min-width:480px;background:var(--surface);font-size:.97rem}
th,td{border:1px solid var(--rule);padding:10px 14px;text-align:left;vertical-align:top}
thead th{background:var(--pine-soft)}

/* flow diagram */
.flow{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:8px}
.flow .node{background:var(--surface);border:1px solid var(--rule);border-radius:10px;padding:10px 16px;font-weight:700}
.flow .node.us{background:var(--pine);color:var(--surface);border-color:var(--pine)}
.flow .arrow{color:var(--muted);font-size:.9rem}

/* cards (articles / case template) */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:24px}
@media (max-width:720px){.cards{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--rule);border-radius:14px;padding:22px;display:flex;flex-direction:column;gap:8px;min-width:0;text-decoration:none;color:var(--ink)}
a.card:hover{border-color:var(--pine)}
.card .meta{font-size:.85rem;color:var(--muted);letter-spacing:.06em}
.card .status{font-size:.8rem;font-weight:700;color:var(--grain)}
.card p{color:var(--muted)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:28px}
@media (max-width:760px){.contact-grid{grid-template-columns:1fr}}
.contact-grid > *{min-width:0}
.qr{aspect-ratio:1;max-width:220px;width:100%;border:1px solid var(--rule);border-radius:12px;display:grid;place-items:center;padding:10px;background:#fff}
.qr img{width:100%;height:auto;display:block}
.checklist{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.checklist li{background:var(--surface);border:1px solid var(--rule);border-radius:10px;padding:12px 16px}
.checklist b{display:block}
.checklist span{color:var(--muted);font-size:.95rem}

/* cta band */
.cta-band{background:var(--pine);color:var(--surface)}
.cta-band h2{color:var(--surface)}
.cta-band p{opacity:.9;margin-top:8px}
.cta-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
:root[data-theme="dark"] .cta-band,:root[data-theme="dark"] .cta-band h2{color:var(--paper)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .cta-band,:root:not([data-theme="light"]) .cta-band h2{color:var(--paper)}}

/* footer */
.site-foot{padding-block:40px 48px;font-size:.92rem;color:var(--muted);border-top:1px solid var(--rule)}
.site-foot .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
@media (max-width:720px){.site-foot .wrap{grid-template-columns:1fr}}
.site-foot b{color:var(--ink)}
.site-foot dl{margin:8px 0 0;display:grid;grid-template-columns:auto 1fr;gap:4px 14px}
.site-foot dd{margin:0}
.foot-links{display:flex;flex-direction:column;gap:6px}
.foot-area{font-weight:700}
.foot-sub{color:var(--muted)}

/* mobile LINE bar */
.line-bar{display:none}
@media (max-width:760px){
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom,0px))}
  .line-bar{display:block;position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--surface);border-top:1px solid var(--rule);padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px))}
  .line-bar{display:grid!important;grid-template-columns:1fr 1fr;gap:10px}
  .line-bar .btn{width:100%;justify-content:center;padding:12px 10px}
}
.article hr{border:0;border-top:1px solid var(--rule);margin:8px 0;width:100%}
.refs{font-size:.88rem;color:var(--muted);word-break:break-all}
.refs h3{font-size:1rem;margin-bottom:6px}
.refs ul{gap:4px}
.ba{margin:24px 0 0}
.ba-pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:720px){.ba-pair{grid-template-columns:1fr}}
.ba-pair > div{position:relative;border-radius:12px;overflow:hidden;background:var(--surface)}
.ba-pair img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.ba-pair span{position:absolute;left:10px;top:10px;background:rgba(0,0,0,.6);color:#fff;font-size:.85rem;font-weight:700;padding:4px 10px;border-radius:999px}
.ba-pair span.after{background:var(--accent,#1f4a3d)}
.byline{font-size:.9rem;color:var(--muted)}
.breadcrumb{font-size:.88rem;color:var(--muted);margin-bottom:14px}
.breadcrumb a{color:var(--muted)}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}