/* KeepNest 存著先 官網：跟 App 同一套繪本墨線風（色票見 docs/PLAN.md §4.2） */
:root {
  --bg: #F7F3EA;
  --card: #FFFDF8;
  --ink: #24272C;
  --muted: #6B7077;
  --line: #E5DED0;
  --sage: #557F70;
  --sage-soft: #E1E9E3;
  --ochre: #C9973A;
  --ochre-soft: #F4E9CF;
  --ochre-ink: #7A5B1F;
  --wash: #DCC48E;
  --radius: 20px;
  color-scheme: light;
}
@font-face { font-family: "DM Sans"; src: url("/fonts/dmsans-bold.woff") format("woff"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Phosphor"; src: url("/fonts/phosphor-subset.woff") format("woff"); font-display: block; }
.ph { font-family: "Phosphor"; font-style: normal; font-weight: normal; line-height: 1; display: inline-block; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Segoe UI", sans-serif;
  line-height: 1.75;
  font-size: 16px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--sage); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; margin: 0 auto; padding: 0 16px; }

/* 頁首 */
header.top { position: sticky; top: 0; z-index: 10; background: rgba(247, 243, 234, .92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
header.top .bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 64px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; }
.brand img { width: 40px; height: auto; }
.brand b { font-family: "DM Sans", -apple-system, sans-serif; font-weight: 700; font-size: 21px; letter-spacing: -.4px; }
.brand small { font-size: 14px; color: var(--muted); font-weight: 600; }
nav.main { display: flex; gap: 18px; font-size: 15px; font-weight: 600; }
nav.main a { color: var(--ink); text-decoration: none; }
nav.main a:hover { color: var(--sage); }
@media (max-width: 640px) { nav.main .opt { display: none; } nav.main { gap: 14px; } .brand small { display: none; } }

/* 按鈕 */
.stores { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 10px; }
.store { display: inline-flex; align-items: center; gap: 10px; padding: 10px 18px; border-radius: 16px; border: 2px solid var(--ink); background: var(--card); color: var(--ink); text-decoration: none; line-height: 1.25; cursor: default; }
.store .ph { font-size: 26px; flex: none; }
.store span { display: flex; flex-direction: column; }
.store small { font-size: 12px; color: var(--muted); }
.store strong { font-size: 17px; }
.store em { font-style: normal; font-size: 12px; font-weight: 700; color: var(--ochre-ink); background: var(--ochre-soft); border-radius: 999px; padding: 2px 8px; margin-left: 4px; }
.fine { color: var(--muted); font-size: 14px; }

/* 首頁主視覺 */
.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; padding: 56px 16px 40px; }
.hero h1 { font-size: 46px; line-height: 1.22; margin: 8px 0 16px; letter-spacing: .5px; }
.hero .kicker { display: inline-block; font-weight: 700; color: var(--ochre-ink); background: var(--ochre-soft); border-radius: 999px; padding: 3px 12px; font-size: 14px; }
.hero p.lead { font-size: 18px; color: #3c4047; margin: 0; }
.phone { position: relative; width: min(320px, 78vw); margin: 0 auto; }
.phone .wash { position: absolute; inset: 14px -14px -14px 14px; border-radius: 44px; background: var(--wash); }
.phone .frame { position: relative; border: 8px solid var(--ink); border-radius: 44px; overflow: hidden; background: #fff; }
.phone .bird { position: absolute; right: 26px; top: -46px; width: 82px; }
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-top: 32px; gap: 48px; }
  .hero h1 { font-size: 34px; }
}

/* 區塊 */
section.block { padding: 56px 0; }
section.block.alt { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2.title { font-size: 32px; line-height: 1.3; margin: 0 0 10px; }
p.sub { color: var(--muted); margin: 0 0 28px; font-size: 17px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 820px) { .grid3, .grid2 { grid-template-columns: 1fr; } h2.title { font-size: 26px; } }
.feature { background: var(--card); border: 2px solid var(--ink); border-radius: var(--radius); padding: 22px; box-shadow: 6px 6px 0 var(--c, var(--wash)); }
section.block.alt .feature { background: var(--bg); }
.feature h3 { margin: 10px 0 6px; font-size: 19px; line-height: 1.4; }
.feature p { margin: 0; color: #3c4047; font-size: 15px; }
.feature .ic { width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; background: var(--c, var(--wash)); }
.feature .ic .ph { font-size: 24px; color: var(--ink); }

/* 三步驟 */
.step { text-align: center; }
.step img { width: 100%; max-width: 300px; margin: 0 auto 8px; }
.step b { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--ink); color: var(--bg); font-size: 15px; margin-right: 6px; }
.step h3 { font-size: 19px; margin: 8px 0 4px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }

/* 實機畫面：手機左右滑、桌機格狀 */
.shots { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.shots figure { margin: 0; }
.shots img { border: 5px solid var(--ink); border-radius: 26px; background: #fff; }
.shots figcaption { text-align: center; font-size: 14px; font-weight: 600; margin-top: 8px; }
@media (max-width: 980px) {
  .shots { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 12px; margin: 0 -16px; padding-left: 16px; padding-right: 16px; }
  .shots figure { flex: 0 0 62%; max-width: 240px; scroll-snap-align: center; }
}

/* 方案 */
.plan { background: var(--card); border: 2px solid var(--ink); border-radius: var(--radius); padding: 22px; }
.plan h3 { margin: 0 0 2px; font-size: 20px; }
.plan .tag { color: var(--muted); font-size: 14px; margin: 0 0 12px; }
.plan ul { margin: 0; padding-left: 20px; }
.plan li { margin: 0 0 6px; font-size: 15px; }
.plan.hl { box-shadow: 6px 6px 0 var(--sage); }

/* 常見問答 */
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 4px 18px; margin: 0 0 10px; }
.faq summary { cursor: pointer; font-weight: 700; padding: 12px 0; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 10px; font-size: 22px; color: var(--sage); }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 0 0 14px; color: #3c4047; }

/* 指南卡片 */
.guide-card { display: block; background: var(--card); border: 2px solid var(--ink); border-radius: var(--radius); padding: 20px 22px; text-decoration: none; color: var(--ink); box-shadow: 6px 6px 0 var(--c, var(--wash)); }
.guide-card h3 { margin: 0 0 6px; font-size: 18px; line-height: 1.45; }
.guide-card p { margin: 0; color: var(--muted); font-size: 15px; }

/* 文章、法律頁 */
article, main.doc { padding: 40px 0 24px; }
article h1, main.doc h1 { font-size: 34px; line-height: 1.3; margin: 8px 0 10px; }
article h2, main.doc h2 { font-size: 23px; line-height: 1.4; margin: 36px 0 10px; }
article h3, main.doc h3 { font-size: 18px; margin: 22px 0 6px; }
article p, article li, main.doc p, main.doc li { margin: 0 0 12px; }
article ul, article ol, main.doc ul { padding-left: 22px; margin: 0 0 14px; }
.crumbs { font-size: 14px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.meta { color: var(--muted); font-size: 14px; margin-bottom: 20px; }
.summary { background: var(--sage-soft); border-radius: var(--radius); padding: 18px 20px; margin: 18px 0 8px; }
.summary ul { margin: 0; }
.note { background: var(--ochre-soft); border-radius: 16px; padding: 12px 16px; margin: 12px 0; }
.cta { background: var(--sage-soft); border-radius: var(--radius); padding: 22px 24px; margin: 32px 0; }
.cta h2, .cta h3 { margin-top: 0; }
table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 16px; overflow: hidden; margin: 10px 0 14px; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-top: 1px solid var(--line); vertical-align: top; }
thead th { border-top: none; background: var(--sage-soft); font-weight: 700; }
.table-scroll { overflow-x: auto; }
hr { border: none; border-top: 1px solid var(--line); margin: 48px 0 24px; }
nav.lang a { color: var(--sage); text-decoration: none; font-weight: 600; font-size: 14px; }
nav.lang a + a::before { content: "・"; color: var(--muted); margin: 0 4px; }

/* 頁尾 */
footer.site { border-top: 1px solid var(--line); padding: 32px 0 48px; color: var(--muted); font-size: 14px; margin-top: 24px; }
footer.site .cols { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
footer.site nav { display: flex; flex-wrap: wrap; gap: 6px 16px; }
footer.site a { color: var(--ink); text-decoration: none; font-weight: 600; }
@media (max-width: 480px) { article h1, main.doc h1 { font-size: 27px; } table { font-size: 14px; } }