/* POSWEB 官網
   設計主軸：POS 的「日結單」。首頁的收據是唯一的視覺重點，其餘保持安靜。
   色彩：墨藍（文字、按鈕）、白（頁面）、感熱紙灰綠（收據與區塊底）、印章紅（只用在「加印」與錯誤訊息） */

:root {
  --ink: #15263B;
  --ink-2: #2B3D52;
  --muted: #586675;
  --paper: #FFFFFF;
  --thermal: #EEF2EE;
  --thermal-2: #E3E9E4;
  --rule: #D5DCD7;
  --stamp: #B42318;
  --focus: #1D5FD1;
  --sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", "Heiti TC", sans-serif;
  --mono: "IBM Plex Mono", "Noto Sans TC", ui-monospace, monospace;
  --wrap: 1160px;
  --gutter: clamp(16px, 4vw, 40px);
  --space: clamp(64px, 9vw, 112px);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 17px; line-height: 1.8; font-weight: 400;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--ink); text-underline-offset: 4px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 2px; }
p { margin: 0 0 1em; max-width: 36em; }
h1, h2, h3, h4 { margin: 0; color: var(--ink); line-height: 1.3; font-weight: 700; }
h1 { word-break: keep-all; overflow-wrap: anywhere; text-wrap: balance; font-size: clamp(2.1rem, 4.4vw, 3.5rem); font-weight: 900; line-height: 1.22; letter-spacing: -0.005em; }
h2 { font-size: clamp(1.6rem, 2.8vw, 2.25rem); font-weight: 900; line-height: 1.3; }
h3 { font-size: 1.2rem; }
ul, ol { margin: 0; padding: 0; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }
.muted { color: var(--muted); }
.lead { font-size: 1.15rem; line-height: 1.85; color: var(--ink-2); }

/* ---------- 頁首 ---------- */
.site-head { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--rule); backdrop-filter: saturate(1.4) blur(6px); }
.site-head .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 900; font-size: 1.25rem; letter-spacing: .02em; }
.brand svg { width: 30px; height: 30px; }
.nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav a { text-decoration: none; font-size: .98rem; color: var(--ink-2); padding: 6px 0; border-bottom: 2px solid transparent; }
.nav a:hover { border-bottom-color: var(--rule); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--ink); font-weight: 700; }
.nav .btn { padding: 9px 18px; border-bottom: 0; color: #fff; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--rule); border-radius: 6px; padding: 8px 12px; font: inherit; color: var(--ink); }
@media (max-width: 920px) {
  .nav-toggle { display: inline-block; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 68px; background: #fff; border-bottom: 1px solid var(--rule);
         flex-direction: column; align-items: stretch; gap: 0; padding: 8px var(--gutter) 20px; margin: 0; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--thermal-2); }
  .nav .btn { margin-top: 12px; text-align: center; }
}

/* ---------- 按鈕 ---------- */
.btn { display: inline-block; background: var(--ink); color: #fff; text-decoration: none; font-weight: 700; padding: 13px 24px; border-radius: 6px; border: 2px solid var(--ink); font-size: 1rem; line-height: 1.4; cursor: pointer; font-family: inherit; }
.btn:hover { background: var(--ink-2); border-color: var(--ink-2); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--thermal); }
.btn.light { background: #fff; color: var(--ink); border-color: #fff; }
.btn.light:hover { background: var(--thermal); }
.btns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* ---------- 首頁 Hero：收據 ---------- */
.hero { padding: clamp(48px, 7vw, 88px) 0 clamp(56px, 7vw, 88px); }
.hero h1 { font-size: clamp(2rem, 3.6vw, 3rem); }
.br-wide { display: none; }
@media (min-width: 1100px) { .br-wide { display: inline; } }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(300px, .7fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
.hero h1 { margin-bottom: 24px; }
.proof { margin-top: 28px; font-size: .95rem; color: var(--muted); border-left: 3px solid var(--rule); padding-left: 12px; }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } }

.printer { position: relative; max-width: 360px; margin-left: auto; margin-right: auto; }
.printer-slot { height: 18px; background: var(--ink); border-radius: 9px; position: relative; z-index: 2; box-shadow: inset 0 -5px 0 #0c1827; }
.printer-mouth { overflow: hidden; margin: -9px 14px 0; padding-top: 9px; }
.receipt {
  font-family: var(--mono); font-size: 14px; line-height: 1.75; color: #22313F;
  background: var(--thermal); padding: 26px 22px 34px;
  --tooth: 9px;
  -webkit-mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) 50% / calc(var(--tooth) * 2) 100%;
          mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) 50% / calc(var(--tooth) * 2) 100%;
  animation: print 1.6s cubic-bezier(.25,.8,.3,1) .25s both;
}
@keyframes print { from { transform: translateY(-101%); } to { transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) { .receipt { animation: none; } }
.receipt .r-title { text-align: center; font-weight: 500; letter-spacing: .08em; }
.receipt .r-sub { text-align: center; color: var(--muted); font-size: 12.5px; }
.receipt .r-cut { border-top: 1.5px dashed #9AA8A0; margin: 12px 0; }
.receipt dl { margin: 0; }
.receipt .r-row { display: flex; gap: 8px; align-items: baseline; }
.receipt .r-row dt { white-space: nowrap; }
.receipt .r-row .r-dots { flex: 1; border-bottom: 1.5px dotted #A9B6AE; transform: translateY(-4px); min-width: 12px; }
.receipt .r-row dd { margin: 0; white-space: nowrap; font-variant-numeric: tabular-nums; }
.receipt .r-note { margin: -2px 0 6px 1.2em; font-size: 12.5px; color: var(--muted); }
.stamp { display: inline-block; color: var(--stamp); border: 2px solid var(--stamp); border-radius: 4px; padding: 0 8px; font-weight: 700; letter-spacing: .12em; transform: rotate(-3deg); margin: 4px 0 10px; font-family: var(--sans); font-size: 14px; }
.receipt .r-foot { text-align: center; font-size: 12px; color: var(--muted); margin-top: 6px; }

/* ---------- 區塊 ---------- */
.section { padding: var(--space) 0; }
.section.tint { background: var(--thermal); }
.section.ink { background: var(--ink); color: #fff; }
.section.ink h2, .section.ink h3, .section.ink a { color: #fff; }
.section.ink p { color: #D9E1EA; }
.sec-head { margin-bottom: clamp(32px, 4vw, 48px); }
.sec-head h2 { margin-bottom: 14px; }
.sec-head p { color: var(--muted); }
.section.ink .sec-head p { color: #C9D3DE; }

/* 三件事不用改：直線分隔的三欄，不做卡片 */
.three { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ink); }
.three > div { padding: 26px 28px 8px 0; }
.three > div + div { padding-left: 28px; border-left: 1px solid var(--rule); }
.three h3 { font-size: 1.35rem; font-weight: 900; margin-bottom: 10px; }
.three p { color: var(--ink-2); }
@media (max-width: 760px) {
  .three { grid-template-columns: 1fr; }
  .three > div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
}

/* 角色表 */
.roles { border-top: 2px solid var(--ink); }
.roles > div { display: grid; grid-template-columns: 200px 1fr; gap: 24px; padding: 20px 0; border-bottom: 1px solid var(--rule); }
.roles dt { font-weight: 900; font-size: 1.1rem; }
.roles dd { margin: 0; color: var(--ink-2); }
@media (max-width: 640px) { .roles > div { grid-template-columns: 1fr; gap: 4px; } }

/* 產業索引：像帳簿的一列一列 */
.ledger { border-top: 2px solid var(--ink); }
.ledger a { display: grid; grid-template-columns: minmax(180px, 280px) 1fr auto; gap: 24px; align-items: baseline; padding: 20px 0; border-bottom: 1px solid var(--rule); text-decoration: none; }
.ledger a:hover .l-go { text-decoration: underline; }
.ledger a:hover { background: linear-gradient(90deg, var(--thermal), transparent 70%); }
.ledger .l-name { font-weight: 900; font-size: 1.15rem; }
.ledger .l-tag { color: var(--ink-2); }
.ledger .l-go { font-size: .95rem; color: var(--ink); white-space: nowrap; }
@media (max-width: 760px) { .ledger a { grid-template-columns: 1fr; gap: 4px; } }

/* 有順序的步驟 */
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: s; }
.steps.n3 { grid-template-columns: repeat(3, 1fr); }
.steps.n1 { grid-template-columns: 1fr; }
.steps.n1 > li { padding: 0 0 22px; }
.steps.n1 > li + li { padding: 22px 0; border-left: 0; border-top: 1px solid rgba(127,140,150,.35); }
.steps > li { counter-increment: s; padding: 0 24px 0 0; position: relative; }
.steps > li::before { content: counter(s); display: block; font-size: 2.6rem; font-weight: 900; line-height: 1; margin-bottom: 14px; color: var(--ink); }
.steps > li + li { padding-left: 24px; border-left: 1px solid var(--rule); }
.section.ink .steps > li + li, .section.tint .steps > li + li { border-left-color: rgba(127,140,150,.35); }
.section.ink .steps > li::before { color: #fff; }
.steps h3 { margin-bottom: 4px; }
.steps .when { font-size: .92rem; color: var(--muted); margin-bottom: 8px; }
.section.ink .steps .when { color: #B9C5D2; }
.steps p { font-size: .98rem; }
@media (max-width: 860px) {
  .steps { grid-template-columns: 1fr; }
  .steps > li { padding: 0 0 24px 0; }
  .steps > li + li { padding: 24px 0; border-left: 0; border-top: 1px solid var(--rule); }
}

/* FDE 區塊 */
.split { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

/* CTA */
.cta { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end; }
.cta h2 { margin-bottom: 12px; }
@media (max-width: 760px) { .cta { grid-template-columns: 1fr; } }

/* ---------- 內頁 ---------- */
.page-head { padding: clamp(48px, 7vw, 80px) 0 clamp(32px, 4vw, 48px); border-bottom: 1px solid var(--rule); }
.page-head .crumb { font-size: .92rem; color: var(--muted); margin-bottom: 14px; }
.page-head .crumb a { color: var(--muted); }
.page-head h1 { max-width: 20em; margin-bottom: 18px; }

/* 功能頁：左側索引＋右側內容 */
.with-index { display: grid; grid-template-columns: 220px 1fr; gap: clamp(32px, 5vw, 72px); }
.index-nav { position: sticky; top: 96px; align-self: start; font-size: .95rem; }
.index-nav a { display: block; padding: 6px 0 6px 12px; border-left: 2px solid var(--rule); text-decoration: none; color: var(--ink-2); }
.index-nav a:hover { border-left-color: var(--ink); color: var(--ink); }
@media (max-width: 860px) { .with-index { grid-template-columns: 1fr; } .index-nav { position: static; display: flex; flex-wrap: wrap; gap: 6px 16px; } .index-nav a { border-left: 0; padding: 0; text-decoration: underline; } }
.group { padding: 8px 0 44px; border-top: 2px solid var(--ink); margin-bottom: 8px; }
.group h2 { font-size: 1.5rem; margin: 18px 0 8px; }
.group > p { color: var(--ink-2); }
.ticks { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 32px; margin-top: 18px; }
.ticks li { padding-left: 22px; position: relative; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: .72em; width: 9px; height: 9px; border: 2px solid var(--ink); border-radius: 50%; }
@media (max-width: 640px) { .ticks { grid-template-columns: 1fr; } }

/* 產業頁：問題 → 做法 對照 */
.pairs { border-top: 2px solid var(--ink); }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-bottom: 1px solid var(--rule); }
.pair > div { padding: 24px 28px 20px 0; }
.pair > div + div { padding-left: 28px; border-left: 1px solid var(--rule); background: linear-gradient(90deg, var(--thermal), transparent); }
.pair .k { font-size: .9rem; color: var(--muted); margin-bottom: 6px; }
.pair h3 { margin-bottom: 8px; }
.pair p { margin: 0; }
@media (max-width: 760px) { .pair { grid-template-columns: 1fr; } .pair > div + div { padding: 16px 16px 20px; border-left: 0; } }

.kpis { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 2px solid var(--ink); }
.kpis > div { padding: 20px 20px 4px 0; }
.kpis > div + div { padding-left: 20px; border-left: 1px solid var(--rule); }
.kpis dt { color: var(--muted); font-size: .95rem; }
.kpis dd { margin: 4px 0 0; font-size: 1.4rem; font-weight: 900; }
@media (max-width: 760px) { .kpis { grid-template-columns: 1fr 1fr; } .kpis > div:nth-child(3) { padding-left: 0; border-left: 0; } }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.tags li { border: 1px solid var(--ink); border-radius: 999px; padding: 4px 14px; font-size: .95rem; }

/* 表格（FDE 流程） */
.table-wrap { overflow-x: auto; border-top: 2px solid var(--ink); }
table.flow { border-collapse: collapse; width: 100%; min-width: 720px; font-size: .97rem; }
table.flow th { text-align: left; font-weight: 700; font-size: .9rem; color: var(--muted); padding: 12px 16px 10px 0; border-bottom: 1px solid var(--rule); }
table.flow td { vertical-align: top; padding: 16px 16px 16px 0; border-bottom: 1px solid var(--rule); line-height: 1.7; }
table.flow td:first-child { font-weight: 700; width: 18%; }
table.flow td:last-child { font-weight: 700; width: 22%; }

details.ind { border-bottom: 1px solid var(--rule); }
details.ind:first-of-type { border-top: 2px solid var(--ink); }
details.ind summary { cursor: pointer; padding: 18px 0; font-weight: 900; font-size: 1.15rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
details.ind summary::-webkit-details-marker { display: none; }
details.ind summary::after { content: "展開"; font-weight: 400; font-size: .92rem; color: var(--muted); }
details.ind[open] summary::after { content: "收合"; }
details.ind .table-wrap { border-top: 0; margin-bottom: 24px; }

.plain-list { list-style: none; border-top: 2px solid var(--ink); }
.plain-list li { padding: 16px 0; border-bottom: 1px solid var(--rule); }
.plain-list li strong { display: block; margin-bottom: 2px; }

.note { font-size: .95rem; color: var(--muted); margin-top: 20px; }

/* ---------- 表單 ---------- */
.form-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
@media (max-width: 900px) { .form-layout { grid-template-columns: 1fr; } }
form .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
form .full { grid-column: 1 / -1; }
@media (max-width: 640px) { form .grid { grid-template-columns: 1fr; } }
.field label, .field .label { display: block; font-weight: 700; font-size: .97rem; margin-bottom: 6px; }
.field .req { color: var(--stamp); font-weight: 400; margin-left: 4px; font-size: .9rem; }
.field input[type=text], .field input[type=email], .field input[type=tel], .field select, .field textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink); background: #fff;
  border: 1.5px solid #B9C3BD; border-radius: 6px; padding: 11px 12px; line-height: 1.5;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid var(--focus); outline-offset: 1px; border-color: var(--ink); }
.field .err { color: var(--stamp); font-size: .92rem; margin-top: 6px; display: none; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--stamp); }
.field.invalid .err { display: block; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips label { display: inline-flex; align-items: center; gap: 8px; border: 1.5px solid #B9C3BD; border-radius: 999px; padding: 6px 14px; font-weight: 400; cursor: pointer; margin: 0; }
.chips input { accent-color: var(--ink); width: 16px; height: 16px; }
.chips label:has(input:checked) { border-color: var(--ink); background: var(--thermal); }
.consent { gap: 10px; align-items: flex-start; }
.consent input { margin-top: 7px; width: 18px; height: 18px; accent-color: var(--ink); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-msg { margin-top: 16px; padding: 12px 14px; border-left: 3px solid var(--stamp); background: #FBEFEE; display: none; }
.form-msg.show { display: block; }
.done { display: none; border-top: 2px solid var(--ink); padding-top: 24px; }
.done.show { display: block; }
.done h2 { margin-bottom: 12px; }
.aside-box { background: var(--thermal); padding: 28px; border-radius: 4px; }
.aside-box h2 { font-size: 1.3rem; margin-bottom: 16px; }
.aside-box .steps > li { padding: 0 0 18px; }
.aside-box .steps > li + li { padding: 18px 0; border-left: 0; border-top: 1px solid rgba(127,140,150,.35); }
.aside-box .steps > li::before { font-size: 1.6rem; margin-bottom: 6px; }
.contact-lines { margin-top: 24px; font-size: .98rem; }
.contact-lines div { padding: 4px 0; }

/* 隱私權政策等長文 */
.prose { max-width: 46em; }
.prose h2 { font-size: 1.35rem; margin: 40px 0 12px; }
.prose ul { padding-left: 1.3em; margin-bottom: 1em; }
.prose li { margin-bottom: 6px; }

/* ---------- 頁尾 ---------- */
.site-foot { border-top: 1px solid var(--rule); padding: 48px 0 40px; font-size: .95rem; color: var(--ink-2); }
.site-foot .wrap { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; }
.site-foot h2 { font-size: 1rem; margin-bottom: 10px; }
.site-foot ul { list-style: none; }
.site-foot li { padding: 3px 0; }
.site-foot .legal { grid-column: 1 / -1; border-top: 1px solid var(--rule); padding-top: 20px; font-size: .88rem; color: var(--muted); }
.site-foot .legal p { max-width: none; margin: 0 0 4px; }
@media (max-width: 760px) { .site-foot .wrap { grid-template-columns: 1fr; } }

/* 版面工具（CSP 不允許 inline style，一律用 class） */
.section.flush-top { padding-top: 0; }
.section.tight-top { padding-top: 48px; }
.page-head.no-rule { border-bottom: 0; }
.foot-tag { margin-top: 12px; }
.small { font-size: .92rem; }
h2.mb { margin-bottom: 16px; }
h3.mt { margin-top: 44px; margin-bottom: 4px; }
.section.ink .btn.light { color: var(--ink); }
.section.ink .btn.light:hover { color: var(--ink); }
a[href^="tel:"] { white-space: nowrap; }
.field label.consent { display: flex; font-weight: 400; }