/* RAT mint 頁（10/30）：下水道市政標示——深綠水泥底、噴漆鏤空字、老鼠尾巴粉紅當重點色。
   標題和數字 Big Shoulders Stencil Display，內文 Public Sans。只有看板數字開場時滾動一次 */
:root {
  --sewer: #22302a;
  --concrete: #2d3a33;
  --slab: #34413a;
  --moss: #8fa07f;
  --ink: #e8ecdf;
  --dim: #b4bfaa;
  --tail: #f2a3b3;
  --tail-deep: #d9798d;
  --warn: #ff7a5c;
  --line: #4a5a50;
  --radius-s: 6px;
  --radius-l: 14px;
  --stencil: "Big Shoulders Stencil Display", "Arial Narrow", Impact, sans-serif;
  --body: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
/* 有 display 的元素加了 hidden 也要真的藏起來（付費選項在選「免費」時被 display:flex 蓋過，10/30 截圖抓到） */
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--sewer); color: var(--ink); font: 400 17px/1.6 var(--body);
  /* 水泥牆的細縫：很淡的橫向磚縫，不搶內容 */
  background-image: repeating-linear-gradient(0deg, transparent 0 63px, rgba(0, 0, 0, .09) 63px 64px);
}
a { color: var(--tail); text-underline-offset: 3px; }
a:hover { color: #ffc4cf; }
:focus-visible { outline: 3px solid var(--tail); outline-offset: 3px; border-radius: 4px; }
code { font: 500 .92em/1 ui-monospace, Consolas, monospace; background: var(--slab); padding: 2px 6px; border-radius: 4px; }
.stencil { font-family: var(--stencil); font-weight: 900; letter-spacing: .01em; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--tail); color: var(--sewer); padding: 8px 12px; border-radius: var(--radius-s); z-index: 10; }
.skip:focus { left: 16px; }

/* ---------- 頂列 ---------- */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px clamp(16px, 4vw, 48px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 900 30px/1 var(--stencil); }
.top nav { display: flex; gap: clamp(12px, 2.4vw, 28px); flex-wrap: wrap; justify-content: flex-end; }
.top nav a { color: var(--dim); text-decoration: none; font-weight: 500; font-size: 15px; }
.top nav a:hover { color: var(--ink); }

main { max-width: 1120px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 48px); }
section { padding: clamp(48px, 8vw, 88px) 0; border-bottom: 1px solid var(--line); }
section:last-child { border-bottom: 0; }
h2 { font: 800 clamp(34px, 5vw, 52px)/1.02 var(--stencil); margin: 0 0 10px; }
h3 { font: 800 26px/1.1 var(--stencil); margin: 0 0 14px; }
.sub { color: var(--dim); max-width: 62ch; margin: 0 0 32px; }

/* ---------- 開頭：大字＋看板 ---------- */
.hero { display: grid; grid-template-columns: 1fr; gap: clamp(28px, 4vw, 44px); padding-top: clamp(40px, 7vw, 80px); }
.hero h1 { font: 800 clamp(44px, 8vw, 92px)/.92 var(--stencil); margin: 0 0 22px; max-width: 13ch; }
.hero h1 .stencil { color: var(--tail); font-size: 1.32em; display: block; line-height: .82; }
.lede { font-size: clamp(18px, 2vw, 21px); max-width: 52ch; margin: 0 0 16px; }
.status { margin: 0; color: var(--moss); font-weight: 700; }
.status.warn { color: var(--warn); }
.trade { margin: 14px 0 0; }
.trade a { display: inline-block; background: var(--tail); color: #2a1a1e; text-decoration: none; font-weight: 700; padding: 12px 20px; border-radius: var(--radius-s); }
.trade a:hover { background: #ffbdca; color: #2a1a1e; }

.board {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  background: var(--concrete); border: 2px solid var(--line); border-radius: var(--radius-l); overflow: hidden;
}
.gauge { padding: clamp(18px, 3vw, 30px); border-right: 2px dashed var(--line); }
.gauge:nth-child(3) { border-right: 0; }
.gauge-num { margin: 0; font-size: clamp(54px, 9vw, 104px); line-height: .9; color: var(--ink); font-variant-numeric: tabular-nums; }
.gauge:first-child .gauge-num { color: var(--tail); }
.gauge-label { margin: 8px 0 0; color: var(--dim); font-size: 15px; line-height: 1.35; }
.gauge-label .of { display: block; color: var(--moss); font-size: 13px; }
/* 下水道管：已鑄的份數（免費粉紅、付費苔綠）沿著管子流到 10,000 */
.pipe { grid-column: 1 / -1; height: 18px; margin: 0 clamp(18px, 3vw, 30px); background: var(--sewer); border: 2px solid var(--line); border-radius: 999px; overflow: hidden; display: flex; }
.pipe i { display: block; height: 100%; width: 0; }
#pipe-free { background: var(--tail); }
#pipe-paid { background: var(--moss); }
.pipe-key { grid-column: 1 / -1; margin: 10px clamp(18px, 3vw, 30px) clamp(18px, 3vw, 26px); color: var(--dim); font-size: 14px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }
.k { display: inline-block; width: 12px; height: 12px; border-radius: 3px; }
.k.free { background: var(--tail); }
.k.paid { background: var(--moss); margin-left: 6px; }
.pipe-note { margin-left: auto; color: var(--moss); }

/* ---------- 步驟 ---------- */
.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; display: grid; gap: 18px; }
.step { counter-increment: s; position: relative; background: var(--concrete); border-radius: var(--radius-l); padding: 26px 26px 26px 92px; }
.step::before { content: counter(s); position: absolute; left: 26px; top: 18px; font: 900 56px/1 var(--stencil); color: var(--tail); }
label { display: block; font-weight: 700; margin-bottom: 8px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
input {
  flex: 1 1 260px; min-width: 0; background: var(--sewer); color: var(--ink); border: 2px solid var(--line); border-radius: var(--radius-s);
  padding: 12px 14px; font: 500 16px/1.2 var(--body);
}
input::placeholder { color: #7f8c78; }
input:focus { border-color: var(--tail); outline: none; }
.btn {
  background: var(--tail); color: #2a1a1e; border: 0; border-radius: var(--radius-s); padding: 12px 20px;
  font: 700 16px/1.2 var(--body); cursor: pointer;
}
.btn:hover { background: #ffbdca; }
.btn:disabled { opacity: .55; cursor: progress; }
.btn.ghost { background: transparent; color: var(--ink); border: 2px solid var(--line); padding: 8px 16px; font-size: 20px; }
.btn.ghost:hover { border-color: var(--tail); }

.look { margin-top: 18px; }
.look-who { margin: 0 0 12px; font-weight: 700; word-break: break-all; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 0; }
.facts div { background: var(--sewer); border-radius: var(--radius-s); padding: 10px 12px; }
.facts dt { color: var(--dim); font-size: 13px; }
.facts dd { margin: 2px 0 0; font-weight: 700; font-variant-numeric: tabular-nums; }
.yes { color: var(--tail); }
.no { color: var(--warn); }
.err { color: var(--warn); font-weight: 700; margin: 12px 0 0; }

.routes { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.route {
  text-align: left; background: var(--sewer); color: var(--ink); border: 2px solid var(--line); border-radius: var(--radius-s);
  padding: 16px 18px; cursor: pointer; font: inherit; display: grid; gap: 4px;
}
.route.on { border-color: var(--tail); box-shadow: inset 6px 0 0 var(--tail); }
.route-name { font: 800 24px/1 var(--stencil); }
.route-desc { color: var(--dim); font-size: 15px; }
.paid-opts { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; margin-top: 16px; }
.stepper { display: flex; align-items: center; gap: 12px; }
.stepper output { font: 900 40px/1 var(--stencil); min-width: 2ch; text-align: center; }
.pay { display: flex; gap: 8px; }
.chip { background: transparent; color: var(--ink); border: 2px solid var(--line); border-radius: 999px; padding: 8px 16px; font: 700 15px/1 var(--body); cursor: pointer; }
.chip.on { background: var(--moss); border-color: var(--moss); color: var(--sewer); }
.cost { margin: 0; color: var(--dim); flex-basis: 100%; }

.copytext {
  margin: 0 0 14px; background: var(--sewer); border: 2px dashed var(--line); border-radius: var(--radius-s);
  padding: 18px 20px; font-size: 17px; line-height: 1.6; white-space: pre-wrap; word-break: break-word; user-select: all;
}
.route-note { margin: 0 0 12px; color: var(--warn); font-weight: 700; }
.hint { color: var(--dim); font-size: 15px; margin: 14px 0 0; max-width: 68ch; }

/* ---------- 規則 ---------- */
.notice { border: 2px solid var(--warn); border-radius: var(--radius-l); padding: 20px 24px; margin-bottom: 28px; background: rgba(255, 122, 92, .07); max-width: 78ch; }
.notice p { margin: 0; }
.notice-title { font: 800 26px/1.15 var(--stencil); color: var(--warn); margin-bottom: 8px !important; }
.rule-list { margin: 0; padding-left: 22px; display: grid; gap: 12px; max-width: 78ch; }
.rule-list li::marker { color: var(--tail); }
.rule-list b { color: var(--ink); }
.fine { color: var(--dim); font-size: 14px; margin: 24px 0 0; max-width: 72ch; }

/* ---------- 合約 ---------- */
.addrs { margin: 0; display: grid; gap: 10px; }
.addrs div { display: grid; grid-template-columns: 180px 1fr; gap: 10px; align-items: baseline; }
.addrs dt { color: var(--dim); }
.addrs dd { margin: 0; word-break: break-all; font-variant-numeric: tabular-nums; }

.foot { border-top: 1px solid var(--line); color: var(--moss); text-align: left; padding: 24px clamp(16px, 4vw, 48px); font-size: 14px; }
.foot p { margin: 0; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: var(--sewer); padding: 12px 18px; border-radius: var(--radius-s); font-weight: 700; max-width: calc(100vw - 32px); }

@media (max-width: 760px) {
  .board { grid-template-columns: 1fr; }
  .gauge { border-right: 0; border-bottom: 2px dashed var(--line); }
  .gauge:nth-child(3) { border-bottom: 0; }
  .step { padding: 70px 18px 20px; }
  .step::before { left: 18px; top: 14px; font-size: 46px; }
  .addrs div { grid-template-columns: 1fr; gap: 2px; }
  .pipe-note { margin-left: 0; flex-basis: 100%; }
  .top nav a[href="#contracts"] { display: none; }
}