/* ==========================================================================
   練息場數據引擎 · 架構規劃
   視覺系統：handbook/設計規範/練息場視覺系統.md（對外正式版）
   動效原則：afu-brain/skills/apple-design（WWDC Designing Fluid Interfaces）
   ========================================================================== */

:root {
  /* 品牌主色 */
  --color-black: #032639;
  --color-blue: #004D89;
  --color-gray-blue: #6694B8;

  --blue-900: #003864;
  --blue-700: #004D89;
  --blue-500: #6694B8;
  --blue-300: #B2CADC;
  --blue-200: #CCDCE8;
  --blue-100: #E5EDF3;

  --neutral-900: #274555;
  --neutral-700: #4B6472;
  --neutral-500: #6F838E;
  --neutral-300: #93A2AA;
  --neutral-200: #B7C1C6;
  --neutral-100: #DBE0E3;

  --accent-teal: #23CDA0;
  --accent-green: #42C01E;
  --accent-orange: #FF9925;
  --accent-yellow: #FFDC2D;
  --accent-peach: #F9B497;
  --accent-purple: #A29CF1;

  --bg-blue: #CCE0F7;
  --bg-mint: #D3F5EC;
  --bg-green: #F3FBE8;
  --bg-peach: #FFEBD3;
  --bg-yellow: #FFFBEA;
  --bg-pink: #FEF0EA;
  --bg-lavender: #E6E5FB;

  --font-heading: "jf-jinxuan", "金萱", "Songti TC", "Noto Serif TC", serif;
  --font-body: "Helvetica Neue", Helvetica, "PingFang TC", "Microsoft JhengHei", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;

  --radius: 16px;
  --radius-lg: 24px;
  --radius-sm: 10px;

  --shadow-sm: 0 1px 3px rgba(3, 38, 57, .06), 0 6px 18px rgba(3, 38, 57, .05);
  --shadow-md: 0 2px 6px rgba(3, 38, 57, .07), 0 14px 40px rgba(3, 38, 57, .08);
  --shadow-lg: 0 8px 24px rgba(3, 38, 57, .10), 0 40px 80px rgba(3, 38, 57, .14);

  /* 動效：預設臨界阻尼（無回彈）；只有帶動量的互動才給 bounce */
  --spring: cubic-bezier(.32, .72, 0, 1);
  --spring-bounce: cubic-bezier(.34, 1.4, .3, 1);
  --dur: .38s;
  --dur-fast: .22s;

  --page-max: 1560px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 100%;
  line-height: 1.65;
  color: var(--neutral-900);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  letter-spacing: .01em;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  color: var(--color-blue);
  margin: 0;
  font-weight: 600;
}
/* 字級光學：大字負字距＋緊行距；小字微正字距 */
h1 { font-size: clamp(1.9rem, 4.2vw, 2.9rem); line-height: 1.12; letter-spacing: -.022em; }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); line-height: 1.2;  letter-spacing: -.016em; }
h3 { font-size: clamp(1.1rem, 1.9vw, 1.35rem); line-height: 1.35; letter-spacing: -.01em; }

button { font: inherit; color: inherit; }

/* ── 有機流動色塊背景 ─────────────────────────────────────────── */
.blobs { position: fixed; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }
.blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .45; will-change: transform; }
.blob-1 { width: 46vw; height: 46vw; left: -14vw; top: -16vw;   background: var(--bg-blue);  animation: drift1 34s ease-in-out infinite; }
.blob-2 { width: 38vw; height: 38vw; right: -12vw; top: 22vh;   background: var(--bg-mint);  animation: drift2 42s ease-in-out infinite; }
.blob-3 { width: 30vw; height: 30vw; left: 32vw; bottom: -14vw; background: var(--bg-peach); animation: drift3 50s ease-in-out infinite; }
@keyframes drift1 { 0%,100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(4vw, 5vh, 0) scale(1.08); } }
@keyframes drift2 { 0%,100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(-5vw, -4vh, 0) scale(1.1); } }
@keyframes drift3 { 0%,100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(3vw, -6vh, 0) scale(.94); } }

/* ── 密碼門 ──────────────────────────────────────────────────── */
.gate {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-items: center; padding: 24px;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
}
.gate.is-out {
  opacity: 0; transform: scale(1.04); pointer-events: none;
  transition: opacity .5s var(--spring), transform .5s var(--spring), backdrop-filter .5s var(--spring);
  backdrop-filter: blur(0px); -webkit-backdrop-filter: blur(0px);
}
.gate-card {
  width: min(440px, 100%); background: #fff;
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  padding: 44px 38px 34px; text-align: center;
}
.gate-logo { height: 46px; width: auto; display: block; margin: 0 auto 24px; }
.gate h1 { font-size: 1.5rem; letter-spacing: -.012em; }
.gate .sub { color: var(--neutral-500); font-size: .875rem; margin: 8px 0 26px; }
.gate-field { position: relative; }
.gate input {
  width: 100%; padding: 15px 16px; font-size: 1.05rem; letter-spacing: .28em;
  text-align: center; font-family: var(--font-body);
  border: 1.5px solid var(--neutral-100); border-radius: var(--radius-sm);
  background: var(--blue-100); color: var(--color-black); outline: none;
  transition: border-color var(--dur-fast) ease, background var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.gate input:focus { border-color: var(--blue-500); background: #fff; box-shadow: 0 0 0 4px rgba(102,148,184,.16); }
.gate-err { color: #D2564E; font-size: .8rem; height: 20px; margin-top: 10px; opacity: 0; transition: opacity .2s ease; }
.gate-err.show { opacity: 1; }
.shake { animation: shake .38s ease; }
@keyframes shake { 0%,100%{transform:translateX(0)} 18%{transform:translateX(-9px)} 38%{transform:translateX(8px)} 60%{transform:translateX(-5px)} 82%{transform:translateX(3px)} }

/* ── 按鈕 ────────────────────────────────────────────────────── */
.btn {
  border: 0; cursor: pointer; border-radius: 999px;
  padding: 13px 26px; font-weight: 600; font-size: .95rem;
  background: var(--color-blue); color: #fff;
  box-shadow: 0 4px 14px rgba(0,77,137,.24);
  transition: transform .1s ease-out, box-shadow var(--dur-fast) var(--spring), background var(--dur-fast) ease;
}
.btn:hover { box-shadow: 0 8px 22px rgba(0,77,137,.3); }
.btn:active { transform: scale(.965); }      /* 反饋落在 pointer-down */
.btn-full { width: 100%; margin-top: 18px; }
.btn-ghost { background: #fff; color: var(--color-blue); border: 1.5px solid var(--blue-200); box-shadow: none; }
.btn-ghost:hover { background: var(--blue-100); box-shadow: none; }
.btn-sm { padding: 7px 14px; font-size: .76rem; border-radius: 999px; }

/* ── 應用外殼 ────────────────────────────────────────────────── */
.app { position: relative; z-index: 1; opacity: 0; }
.app.ready { opacity: 1; transition: opacity .6s ease .1s; }

/* ── 刊頭 ────────────────────────────────────────────────────── */
.masthead { position: relative; }
.mh-in { max-width: var(--page-max); margin: 0 auto; padding: 26px 24px 0; }
.mh-top { display: flex; align-items: flex-start; gap: 20px; }
.logo { height: 46px; width: auto; display: block; margin-right: auto; }
.mh-tools { display: flex; align-items: center; gap: 8px; flex: none; }
.mh-chip {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1.5px solid var(--blue-200); background: rgba(255,255,255,.8);
  border-radius: 999px; padding: 7px 15px; font-size: .78rem; color: var(--color-blue); font-weight: 600;
}
.mh-chip .n {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 18px; height: 18px; padding: 0 6px; border-radius: 999px;
  background: var(--accent-orange); color: #fff; font-size: .66rem; font-weight: 700; line-height: 1;
}
.mh-chip .n.done { background: var(--neutral-100); color: var(--neutral-500); }

.mh-title { padding: 24px 0 22px; }
.mh-title .eyebrow { font-size: .7rem; letter-spacing: .2em; color: var(--neutral-500); text-transform: uppercase; margin: 0 0 12px; }
.mh-title h1 { font-size: clamp(2.1rem, 4.6vw, 3.15rem); line-height: 1.1; letter-spacing: -.028em; margin: 0; }
.br-m { display: none; }
.mh-sub { margin: 14px 0 0; font-size: .84rem; color: var(--neutral-500); display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.mh-sub .sep { color: var(--neutral-200); }

/* ── 黏頂導覽列 ──────────────────────────────────────────────── */
.navbar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(22px) saturate(180%); -webkit-backdrop-filter: blur(22px) saturate(180%);
}
.nav-in { max-width: var(--page-max); margin: 0 auto; padding: 0 24px; display: flex; align-items: flex-end; gap: 16px 24px; flex-wrap: wrap; }
.tabs { display: flex; gap: 2px; position: relative; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  position: relative; border: 0; background: none; cursor: pointer;
  padding: 13px 14px 15px; font-size: .92rem; white-space: nowrap;
  color: var(--neutral-500); font-weight: 500; display: inline-flex; align-items: center;
  transition: color var(--dur-fast) ease, transform .1s ease-out;
}
.tab:hover { color: var(--neutral-900); }
.tab:active { transform: scale(.97); }
.tab.on { color: var(--color-blue); font-weight: 600; }
.tab .pill {
  margin-left: 7px; font-size: .66rem; letter-spacing: .02em;
  background: var(--accent-orange); color: #fff;
  border-radius: 999px; padding: 2px 7px; font-weight: 700;
}
.tab .pill.done { background: var(--neutral-100); color: var(--neutral-500); }
.tab-ink {
  position: absolute; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--color-blue);
  transition: transform var(--dur) var(--spring), width var(--dur) var(--spring);
}
.topbar-edge { height: 1px; background: linear-gradient(90deg, transparent, var(--neutral-100) 20%, var(--neutral-100) 80%, transparent); }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-left: auto; padding-bottom: 11px; }
.sel {
  position: relative; display: inline-flex; align-items: center; gap: 7px;
  background: #fff; border: 1.5px solid var(--neutral-100); border-radius: 999px;
  padding: 7px 15px; font-size: .82rem; color: var(--neutral-700); cursor: pointer;
  transition: transform .1s ease-out, border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.sel:hover { border-color: var(--blue-300); box-shadow: var(--shadow-sm); }
.sel:active { transform: scale(.975); }

/* ── 文件三欄 ────────────────────────────────────────────────── */
.vpage { max-width: var(--page-max); margin: 0 auto; padding: 30px 24px 100px; position: relative; z-index: 1; }
.doc-wrap { display: grid; grid-template-columns: 240px minmax(0, 1fr) 336px; gap: 40px; align-items: start; }
@media (max-width: 1400px) { .doc-wrap { grid-template-columns: 210px minmax(0, 1fr) 310px; gap: 26px; } }
@media (max-width: 1180px) { .doc-wrap { grid-template-columns: 190px minmax(0, 1fr) 280px; gap: 18px; } }
@media (max-width: 1020px) { .doc-wrap { grid-template-columns: minmax(0, 1fr); } .doc-nav, .cmt-rail { position: static; max-height: none; } }

.doc-nav { position: sticky; top: 76px; display: grid; gap: 3px; }
.doc-nav .dn-lbl { font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--neutral-300); padding: 4px 12px 6px; }
.doc-nav button {
  border: 0; background: none; text-align: left; width: 100%; cursor: pointer;
  border-radius: var(--radius-sm); padding: 8px 12px; font-size: .8rem; color: var(--neutral-500);
  transition: background var(--dur-fast) ease, color var(--dur-fast) ease, transform .1s ease-out;
}
.doc-nav button:hover { background: var(--blue-100); color: var(--color-blue); }
.doc-nav button:active { transform: scale(.985); }
.doc-nav button.here { background: var(--blue-100); color: var(--color-blue); font-weight: 600; }
.doc-nav .dn-toc { max-height: 68vh; overflow: auto; scrollbar-width: thin; }

.doc-body { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 38px 56px 52px; min-width: 0; }
@media (max-width: 1180px) { .doc-body { padding: 30px 30px 44px; } }

.foot { max-width: 980px; margin: 34px auto 0; font-size: .76rem; line-height: 1.9; color: var(--neutral-500); }
.foot p { margin: 0 0 8px; }
.foot b { color: var(--neutral-700); }
.foot code { font-family: var(--font-mono); font-size: .9em; background: var(--blue-100); border-radius: 4px; padding: 1px 5px; color: var(--color-blue); }

/* ── Markdown 排版 ───────────────────────────────────────────── */
.md { font-size: .88rem; line-height: 1.85; color: var(--neutral-900); }
.md > *:first-child { margin-top: 0; }
.md h1 { font-size: 1.62rem; letter-spacing: -.022em; margin: 0 0 6px; }
.md h2 { font-size: 1.2rem; margin: 38px 0 12px; padding-top: 24px; border-top: 1px solid var(--neutral-100); color: var(--color-blue); }
.md h2:first-of-type { border-top: 0; padding-top: 0; }
.md h3 { font-size: 1.02rem; margin: 26px 0 8px; }
.md h4 { font-size: .9rem; margin: 18px 0 6px; color: var(--neutral-700); font-family: var(--font-body); font-weight: 700; }
.md p { margin: 0 0 12px; }
.md ul, .md ol { margin: 0 0 14px; padding-left: 22px; }
.md li { margin-bottom: 5px; }
.md strong { color: var(--color-blue); }
.md hr { border: 0; border-top: 1px solid var(--neutral-100); margin: 28px 0; }
.md blockquote {
  margin: 0 0 16px; padding: 15px 20px; background: var(--bg-yellow);
  border-radius: var(--radius-sm); border-left: 3px solid var(--accent-orange);
}
.md blockquote p:last-child { margin-bottom: 0; }
.md code { font-family: var(--font-mono); font-size: .82em; background: var(--blue-100); border-radius: 5px; padding: 2px 6px; color: var(--color-blue); }
.md pre {
  background: #16242E; color: #E6EEF3; border-radius: var(--radius);
  padding: 18px 20px; overflow-x: auto; margin: 0 0 16px; font-size: .78rem; line-height: 1.7;
}
.md pre code { background: none; color: inherit; padding: 0; font-size: 1em; }
.md pre .cmt { color: #7FA3B5; }
.md .tbl-scroll { overflow-x: auto; margin: 0 0 18px; scrollbar-width: thin; }
.md table { border-collapse: collapse; font-size: .82rem; width: 100%; min-width: 460px; }
.md th, .md td { padding: 10px 13px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--neutral-100); }
.md thead th { color: var(--neutral-500); font-weight: 500; font-size: .76rem; border-bottom: 1.5px solid var(--neutral-200); white-space: nowrap; }
.md tbody tr { transition: background var(--dur-fast) ease; }
.md tbody tr:hover { background: var(--blue-100); }
.md a { color: var(--color-blue); }
.md h1 + p, .md .doc-meta { color: var(--neutral-500); }

/* ── 架構圖元件 ──────────────────────────────────────────────── */
.dg {
  margin: 4px 0 22px; padding: 26px 26px 24px;
  border-radius: var(--radius-lg); background: linear-gradient(165deg, #FAFCFE, #F1F6FA);
  border: 1px solid var(--blue-100); overflow-x: auto; scrollbar-width: thin;
}
.dg-cap { font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--neutral-300); margin-bottom: 16px; }
.dg-layer { margin-bottom: 6px; }
.dg-lname { display: flex; align-items: baseline; gap: 9px; margin-bottom: 9px; }
.dg-lname b { font-family: var(--font-heading); font-size: .95rem; color: var(--color-blue); letter-spacing: -.01em; }
.dg-lname i { font-style: normal; font-size: .72rem; color: var(--neutral-500); }
.dg-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 8px; }
.dg-node {
  background: #fff; border: 1px solid var(--blue-200); border-radius: var(--radius-sm);
  padding: 11px 13px; font-size: .8rem; color: var(--neutral-900); line-height: 1.45;
  box-shadow: 0 1px 2px rgba(3,38,57,.04);
  transition: transform var(--dur) var(--spring), box-shadow var(--dur) var(--spring), border-color var(--dur-fast) ease;
}
.dg-node:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); border-color: var(--blue-500); }
.dg-node small { display: block; font-size: .68rem; color: var(--neutral-500); margin-top: 2px; }
.dg-node.soon { border-style: dashed; color: var(--neutral-500); }
/* 用 .svc 不用 .app：頁面本體的容器就叫 .app（開場淡入時 opacity:0），撞名會讓這幾格整個看不見 */
.dg-node.svc { background: var(--bg-mint); border-color: #9BE3CE; }
.dg-node.core { background: var(--color-blue); border-color: var(--color-blue); color: #fff; }
.dg-node.core small { color: rgba(255,255,255,.72); }
/* 可點的格子＝已經有站可以看的。用 <a> 但長得跟其他格一樣，只多一個 ↗ 與一行狀態 */
a.dg-node.lk { display: block; text-decoration: none; position: relative; padding-right: 22px; }
a.dg-node.lk::after {
  content: "↗"; position: absolute; top: 9px; right: 9px;
  font-size: .7rem; color: var(--blue-500);
  transition: transform var(--dur) var(--spring);
}
a.dg-node.lk:hover::after { transform: translate(1px, -1px); }
a.dg-node.lk em {
  display: block; font-style: normal; font-size: .62rem; letter-spacing: .04em;
  color: var(--color-blue); margin-top: 5px;
}

.dg-flow {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  margin: 14px 0; font-size: .76rem; color: var(--color-blue); font-weight: 600;
}
.dg-flow::before, .dg-flow::after {
  content: ""; flex: 1; height: 1px; max-width: 140px;
  background: linear-gradient(90deg, transparent, var(--blue-300));
}
.dg-flow::after { background: linear-gradient(90deg, var(--blue-300), transparent); }
.dg-flow .ar { font-size: .95rem; line-height: 1; }
.dg-flow.plain { color: var(--neutral-500); font-weight: 500; }

.dg-core {
  background: var(--color-blue); color: #fff; border-radius: var(--radius);
  padding: 18px 22px; text-align: center; box-shadow: 0 10px 30px rgba(0,77,137,.22);
}
.dg-core b { font-family: var(--font-heading); font-size: 1.05rem; display: block; margin-bottom: 4px; }
.dg-core span { font-size: .78rem; color: rgba(255,255,255,.82); }

/* 兩把鎖 */
.dg-locks { display: grid; grid-template-columns: 1fr auto 1fr; gap: 14px; align-items: stretch; }
@media (max-width: 720px) { .dg-locks { grid-template-columns: 1fr; } .dg-arrow { transform: rotate(90deg); } }
.dg-lock { background: #fff; border-radius: var(--radius); padding: 18px 20px; border: 1px solid var(--blue-200); }
.dg-lock.b { background: var(--bg-lavender); border-color: #CFCBF3; }
.dg-lock h5 { font-family: var(--font-heading); font-size: .98rem; margin: 0 0 3px; }
.dg-lock .kk { display: block; font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--neutral-300); margin-bottom: 8px; }
.dg-lock ul { margin: 0; padding-left: 16px; font-size: .78rem; line-height: 1.75; color: var(--neutral-700); }
.dg-lock li.no { color: var(--neutral-300); }
.dg-lock li.no::marker { color: var(--neutral-200); }
.dg-arrow { display: grid; place-items: center; align-content: center; gap: 3px; padding: 0 4px; }
.dg-arrow .a { font-size: 1.3rem; color: var(--color-blue); line-height: 1; }
.dg-arrow .t { font-size: .66rem; color: var(--neutral-500); white-space: nowrap; }
.dg-foot { margin-top: 14px; font-size: .76rem; color: var(--neutral-700); text-align: center; line-height: 1.75; }
.dg-foot b { color: var(--color-blue); }

/* 分級階梯 */
.dg-tiers { display: grid; gap: 8px; }
.dg-tier { display: grid; grid-template-columns: 88px minmax(0,1fr); gap: 14px; align-items: start; border-radius: var(--radius); padding: 14px 18px; }
@media (max-width: 620px) { .dg-tier { grid-template-columns: 1fr; gap: 4px; } }
.dg-tier .lv { font-family: var(--font-heading); font-size: 1.02rem; letter-spacing: -.01em; }
.dg-tier b { display: block; font-size: .84rem; margin-bottom: 2px; }
.dg-tier p { margin: 0; font-size: .77rem; line-height: 1.7; }
.dg-tier.l0 { background: var(--bg-pink);      color: #A8453A; }
.dg-tier.l1 { background: var(--bg-peach);     color: #91541A; }
.dg-tier.l2 { background: var(--bg-mint);      color: #0E7A60; }
.dg-tier.l3 { background: var(--bg-lavender);  color: #574BA8; }

/* 編號步驟：驗算五關 / 同意流程 / 路線圖 */
.dg-steps { display: grid; gap: 10px; counter-reset: st; }
.dg-step {
  display: grid; grid-template-columns: 32px minmax(0,1fr) auto; gap: 14px; align-items: start;
  background: #fff; border-radius: var(--radius); padding: 14px 18px; border: 1px solid var(--blue-100);
  transition: transform var(--dur) var(--spring), box-shadow var(--dur) var(--spring);
}
.dg-step:hover { transform: translateX(3px); box-shadow: var(--shadow-sm); }
@media (max-width: 620px) { .dg-step { grid-template-columns: 32px minmax(0,1fr); } .dg-step .out { grid-column: 2; } }
.dg-step .no {
  width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center;
  background: var(--color-blue); color: #fff; font-size: .8rem; font-weight: 700; font-family: var(--font-body);
}
.dg-step b { display: block; font-size: .86rem; color: var(--color-blue); margin-bottom: 2px; }
.dg-step p { margin: 0; font-size: .78rem; line-height: 1.7; color: var(--neutral-700); }
.dg-step .out {
  flex: none; font-size: .72rem; color: var(--neutral-500); background: var(--blue-100);
  border-radius: 999px; padding: 4px 11px; white-space: nowrap; align-self: center;
}
.dg-step .out.warn { background: var(--bg-peach); color: #A75F09; }
.dg-step .out.ok { background: var(--bg-mint); color: #0E7A60; }
.dg-step .when { font-size: .7rem; color: var(--neutral-500); letter-spacing: .02em; }

/* 路線圖 */
.dg-road { display: grid; gap: 0; }
.dg-road .rd {
  display: grid; grid-template-columns: 26px minmax(0,1fr); gap: 16px; align-items: start;
  padding: 0 0 22px; position: relative;
}
.dg-road .rd:last-child { padding-bottom: 0; }
.dg-road .rd::before {
  content: ""; position: absolute; left: 12.5px; top: 22px; bottom: 0; width: 1.5px; background: var(--blue-200);
}
.dg-road .rd:last-child::before { display: none; }
.dg-road .dot {
  width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center;
  background: #fff; border: 2px solid var(--color-blue); color: var(--color-blue);
  font-size: .72rem; font-weight: 700; z-index: 1;
}
.dg-road .rd.now .dot { background: var(--color-blue); color: #fff; }
.dg-road .rc { padding-top: 1px; }
.dg-road .rc .rh { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.dg-road .rc b { font-size: .9rem; color: var(--color-blue); }
.dg-road .rc .when { font-size: .72rem; color: var(--neutral-500); background: var(--blue-100); border-radius: 999px; padding: 2px 10px; }
.dg-road .rc p { margin: 3px 0 0; font-size: .79rem; line-height: 1.7; color: var(--neutral-700); }

/* ── 會前共筆留言（像 Figma：選字就能留言，右欄看討論串）──────── */
.doc-body ::selection { background: #FFF0B8; }

.cpin {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 20px; height: 20px; padding: 0 6px; margin-left: 8px;
  vertical-align: middle; border: 0; cursor: pointer;
  border-radius: 10px 10px 10px 3px;
  background: var(--accent-yellow); color: #7A5A00;
  font-size: .7rem; font-weight: 700; line-height: 1;
  transition: transform .12s ease-out, box-shadow var(--dur-fast) ease;
}
.cpin:hover { box-shadow: 0 3px 10px rgba(3,38,57,.16); }
.cpin:active { transform: scale(.9); }
.cpin.done { background: var(--neutral-100); color: var(--neutral-500); }

.sel-cmt {
  position: absolute; z-index: 60; transform: translateX(-50%);
  display: inline-flex; align-items: center; gap: 5px;
  border: 0; cursor: pointer; padding: 7px 13px; border-radius: 999px;
  background: var(--color-blue); color: #fff; font-size: .78rem; font-weight: 600;
  box-shadow: 0 6px 18px rgba(3,38,57,.24);
  animation: selPop var(--dur-fast) cubic-bezier(.22,1,.36,1) both;
}
.sel-cmt[hidden] { display: none; }        /* class 的 display 會蓋掉瀏覽器的 [hidden]，要自己補一條 */
.sel-cmt .sc-i { font-size: .82rem; }
.sel-cmt:active { transform: translateX(-50%) scale(.94); }
@keyframes selPop { from { opacity: 0; transform: translateX(-50%) translateY(4px) scale(.94); } }
@media (prefers-reduced-motion: reduce) { .sel-cmt { animation: none; } }

.cmt-rail { position: sticky; top: 76px; max-height: calc(100vh - 96px); overflow: auto; scrollbar-width: thin; display: grid; gap: 10px; align-content: start; padding-right: 2px; }
.cr-head { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 16px 16px 14px; display: grid; gap: 9px; }
.cr-title { display: flex; align-items: baseline; gap: 8px; font-size: .95rem; font-weight: 600; color: var(--neutral-900); }
.cr-title .cr-n { font-size: .72rem; font-weight: 500; color: var(--neutral-500); }
.cr-sub { font-size: .74rem; line-height: 1.7; color: var(--neutral-500); }
.cr-sub b { color: var(--neutral-700); }
.cr-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.cr-seg { display: inline-flex; background: var(--blue-100); border-radius: 999px; padding: 2px; }
.cr-seg button { border: 0; background: none; cursor: pointer; border-radius: 999px; padding: 5px 11px; font-size: .74rem; color: var(--neutral-500); transition: background var(--dur-fast) ease, color var(--dur-fast) ease; }
.cr-seg button.on { background: #fff; color: var(--color-blue); font-weight: 600; box-shadow: 0 1px 3px rgba(3,38,57,.1); }
.cr-me { border: 1px solid var(--neutral-100); background: none; cursor: pointer; border-radius: 999px; padding: 5px 11px; font-size: .74rem; color: var(--neutral-700); max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cr-me:hover { border-color: var(--blue-300); color: var(--color-blue); }
.cr-new { width: 100%; border: 1px dashed var(--neutral-100); background: none; cursor: pointer; border-radius: var(--radius-sm); padding: 9px; font-size: .78rem; color: var(--neutral-500); transition: background var(--dur-fast) ease, color var(--dur-fast) ease, transform .1s ease-out; }
.cr-new:hover { background: var(--blue-100); color: var(--color-blue); border-color: var(--blue-200); }
.cr-new:active { transform: scale(.985); }
.cr-empty { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 26px 18px; text-align: center; font-size: .78rem; line-height: 1.8; color: var(--neutral-500); }
.cr-err { background: #FFF6E8; border-radius: var(--radius-sm); padding: 12px 14px; font-size: .74rem; line-height: 1.7; color: #8A5A0B; }
.cr-err b { display: block; margin-bottom: 2px; }
.cr-err code { background: rgba(0,0,0,.06); padding: 1px 5px; border-radius: 4px; }

.cmt-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); padding: 14px 15px 10px; display: grid; gap: 9px; }
.cmt-card.done { opacity: .62; }
.cmt-card.composing { box-shadow: 0 0 0 2px var(--accent-yellow), var(--shadow-sm); }
.cmt-card.flash { animation: cmtFlash 1.1s ease-out; }
@keyframes cmtFlash { 0%, 40% { box-shadow: 0 0 0 2px var(--accent-yellow), var(--shadow-sm); } 100% { box-shadow: var(--shadow-sm); } }
@media (prefers-reduced-motion: reduce) { .cmt-card.flash { animation: none; } }
.cc-quote { border-left: 3px solid var(--blue-200); padding: 1px 0 1px 9px; font-size: .74rem; line-height: 1.65; color: var(--neutral-500); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.cc-sect { font-size: .72rem; color: var(--color-blue); font-weight: 600; }
.cc-sect.dimmed { color: var(--neutral-300); font-weight: 500; }
.cc-msg { display: flex; gap: 8px; align-items: flex-start; }
.cc-msg.re { padding-left: 14px; border-left: 1px solid var(--neutral-100); margin-left: 11px; }
.cc-av { flex: 0 0 auto; width: 24px; height: 24px; border-radius: 50%; background: var(--blue-100); color: var(--color-blue); font-size: .7rem; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; }
.cc-msg.re .cc-av { width: 20px; height: 20px; font-size: .64rem; }
.cc-in { min-width: 0; flex: 1; }
.cc-meta { display: flex; align-items: baseline; gap: 6px; }
.cc-meta b { font-size: .78rem; color: var(--neutral-900); font-weight: 600; }
.cc-meta i { font-style: normal; font-size: .68rem; color: var(--neutral-300); }
.cc-x { margin-left: auto; border: 0; background: none; cursor: pointer; font-size: .68rem; color: var(--neutral-300); opacity: 0; transition: opacity var(--dur-fast) ease; }
.cc-msg:hover .cc-x { opacity: 1; }
.cc-x:hover { color: #C7522A; }
.cc-body { font-size: .8rem; line-height: 1.72; color: var(--neutral-700); margin-top: 2px; overflow-wrap: anywhere; }
.cc-form { display: grid; gap: 7px; }
.cc-form textarea, .cc-name {
  width: 100%; border: 1px solid var(--neutral-100); border-radius: var(--radius-sm);
  padding: 9px 11px; font: inherit; font-size: .8rem; line-height: 1.65; color: var(--neutral-900);
  background: #fff; resize: vertical; transition: border-color var(--dur-fast) ease;
}
.cc-form textarea:focus, .cc-name:focus { outline: none; border-color: var(--blue-300); }
.cc-acts { display: flex; gap: 7px; }
.cc-foot { display: flex; align-items: center; gap: 4px; border-top: 1px solid var(--neutral-100); padding-top: 6px; margin-top: 1px; }
.cc-foot button { border: 0; background: none; cursor: pointer; border-radius: var(--radius-sm); padding: 5px 8px; font-size: .72rem; color: var(--neutral-500); transition: background var(--dur-fast) ease, color var(--dur-fast) ease; }
.cc-foot button:hover { background: var(--blue-100); color: var(--color-blue); }
.cc-by { margin-left: auto; font-size: .68rem; color: var(--accent-green); }

/* ── 通用彈窗 ────────────────────────────────────────────────── */
.modal { position: fixed; inset: 0; z-index: 90; display: none; place-items: center; padding: 24px; }
.modal.on { display: grid; }
.modal-scrim { position: absolute; inset: 0; background: rgba(3,38,57,.34); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.modal-card {
  position: relative; width: min(520px, 100%); background: #fff;
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden;
  animation: mIn .4s var(--spring) both;
}
@keyframes mIn { from { opacity: 0; transform: translateY(14px) scale(.97); } }
.m-head { padding: 22px 26px 4px; display: flex; gap: 14px; align-items: flex-start; }
.m-head .grow { flex: 1; }
.m-head .eyebrow { font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--neutral-500); margin-bottom: 6px; }
.m-head h3 { font-size: 1.15rem; }
.m-head p { margin: 4px 0 0; font-size: .82rem; color: var(--neutral-500); }
.m-x { border: 0; background: none; cursor: pointer; font-size: 1.4rem; line-height: 1; color: var(--neutral-300); padding: 0 2px; }
.m-x:hover { color: var(--neutral-700); }
.m-body { padding: 14px 26px 4px; font-size: .85rem; line-height: 1.8; color: var(--neutral-700); }
.m-foot { padding: 18px 26px 24px; display: flex; gap: 9px; flex-wrap: wrap; }

/* ── 響應式 ──────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .vpage, .mh-in, .nav-in { padding-left: 16px; padding-right: 16px; }
  .mh-title { padding: 18px 0 16px; }
  .br-m { display: block; }
  .doc-body { padding: 24px 20px 32px; }
  .doc-nav .dn-toc { max-height: 160px; }
  .filters { margin-left: 0; }
  .dg { padding: 18px 16px; }
}

/* ── 無障礙：三個獨立訊號 ────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .navbar, .gate { background: #fff; backdrop-filter: none; -webkit-backdrop-filter: none; }
  .modal-scrim { backdrop-filter: none; -webkit-backdrop-filter: none; background: rgba(3,38,57,.5); }
}
@media (prefers-contrast: more) {
  .doc-body, .cr-head, .cmt-card, .dg-node, .dg-step { border: 1.5px solid var(--neutral-300); }
  .md { color: var(--color-black); }
}

@media print {
  .navbar, .blobs, .cmt-rail, .cpin, .sel-cmt, .doc-nav, .mh-tools, .modal { display: none !important; }
  .doc-wrap { grid-template-columns: 1fr; }
  .doc-body { box-shadow: none; padding: 0; }
  .dg { break-inside: avoid; }
  .masthead { border-bottom: 1.5px solid var(--neutral-200); padding-bottom: 10px; }
}