/* ============================================================
   founders.tw《創辦人》— 圓桌 × 深青金
   ------------------------------------------------------------
   視覺語言：俯瞰的圓桌。三席坐定，第四席留白＝你的位置。
   色系與提案簡報同源（teal #0A7E8C / gold #C49A3C）。
   Token 骨架沿用生態系慣例（builder 藍曬圖／empower 地形圖的姊妹站）。
   深淺色只靠 prefers-color-scheme，無 JS 切換器。
   ============================================================ */

:root {
  --paper: #f7f6f3;          /* 暖米紙 */
  --paper-raised: #ffffff;   /* 卡片 */
  --ink: #3d4450;            /* 正文 */
  --ink-strong: #1b2028;     /* 標題墨青 */
  --annot: #6b7280;          /* 次要註記 */
  --line: #e7e4dd;           /* 髮絲線 */
  --line-strong: #d3cfc4;
  --accent: #0a7e8c;         /* 深青：結構與行動 */
  --accent-hover: #086a76;
  --accent-ink: #ffffff;
  --gold: #c49a3c;           /* 金：座位與層級 */
  --gold-soft: rgba(196, 154, 60, 0.14);
  --teal-soft: rgba(10, 126, 140, 0.08);

  --font-display: 'Fraunces', 'Noto Serif TC', serif;
  --font-serif: 'Noto Serif TC', serif;
  --font-zh: 'Noto Sans TC', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #10151c;
    --paper-raised: #1a212b;
    --ink: #c3c9d2;
    --ink-strong: #eef1f5;
    --annot: #8a93a1;
    --line: #2a323e;
    --line-strong: #3a4452;
    --accent: #2fa8b8;
    --accent-hover: #4dbecb;
    --accent-ink: #0b1116;
    --gold: #d9b05e;
    --gold-soft: rgba(217, 176, 94, 0.16);
    --teal-soft: rgba(47, 168, 184, 0.1);
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-zh);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
  font-size: 19px;
  /* 桌面同心圓暈：極淡，俯視圓桌的光 */
  background-image:
    radial-gradient(ellipse 900px 420px at 50% -260px, var(--teal-soft) 0%, transparent 70%);
  background-repeat: no-repeat;
}

::selection { background: var(--gold-soft); color: var(--ink-strong); }

/* ---- 標註體（家族識別）---- */
.mono {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--annot);
}
.mono--accent { color: var(--accent); }
.mono--gold { color: var(--gold); }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
}
.brand-en {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--ink-strong);
}
.brand-zh {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--gold);
}
.site-nav { display: flex; gap: 22px; align-items: center; }
.site-nav a {
  font-size: 1rem;
  color: var(--ink);
  text-decoration: none;
}
.site-nav a:hover { color: var(--accent); }
.site-nav .nav-cta {
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}
.site-nav .nav-cta:hover { background: var(--accent-hover); color: var(--accent-ink); }
@media (max-width: 640px) {
  .site-nav a:not(.nav-cta) { display: none; }
}

/* ---- 版面容器 ---- */
.section { max-width: 1080px; margin: 0 auto; padding: 72px 24px; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { margin-bottom: 36px; }
.section-head .mono { display: block; margin-bottom: 10px; }
.section-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(1.7rem, 3.4vw, 2.35rem);
  color: var(--ink-strong);
  line-height: 1.4;
}
.section-lede { margin-top: 14px; max-width: none; color: var(--ink); }

/* ---- Hero ---- */
.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 24px 64px;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: center;
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; }
}
.hero-eyebrow { display: block; margin-bottom: 18px; }
.hero-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.35;
  color: var(--ink-strong);
}
.hero-title em {
  font-style: normal;
  color: var(--accent);
}
.hero-sub {
  margin-top: 20px;
  font-size: 1.18rem;
  max-width: 480px;
}
.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  font-size: 1.08rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-zh);
}
.btn:hover { background: var(--accent-hover); }
.btn--ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn--ghost:hover { background: var(--teal-soft); color: var(--accent); }

/* ---- Hero 圓桌 SVG ---- */
.table-svg { width: 100%; height: auto; display: block; }
.table-svg .tbl-ring { stroke: var(--line-strong); fill: none; }
.table-svg .tbl-top { fill: var(--paper-raised); stroke: var(--line-strong); }
.table-svg .tbl-grain { stroke: var(--line); fill: none; }
.table-svg .seat-chair { fill: var(--paper-raised); stroke: var(--accent); stroke-width: 2; }
.table-svg .seat-dot { fill: var(--accent); }
.table-svg .seat-open .seat-chair {
  stroke: var(--gold);
  stroke-dasharray: 5 4;
  fill: var(--gold-soft);
}
.table-svg text {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.06em;
  fill: var(--annot);
}
.table-svg .seat-label-strong {
  fill: var(--ink-strong);
  font-family: var(--font-zh);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.table-svg .seat-label-gold { fill: var(--gold); font-weight: 600; }
.table-svg .furniture { fill: var(--annot); opacity: 0.8; font-size: 14px; }

/* 逐席入場 */
.seat { opacity: 0; animation: seat-in 0.5s ease-out forwards; }
.seat-1 { animation-delay: 0.15s; }
.seat-2 { animation-delay: 0.45s; }
.seat-3 { animation-delay: 0.75s; }
.seat-4 { animation-delay: 1.15s; }
@keyframes seat-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .seat { opacity: 1; animation: none; }
  html { scroll-behavior: auto; }
}

/* ---- 卡片群 ---- */
.card-grid { display: grid; gap: 20px; }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px) {
  .card-grid--3, .card-grid--2 { grid-template-columns: 1fr; }
}
.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 26px 26px 24px;
}
.card .mono { display: block; margin-bottom: 12px; }
.card h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--ink-strong);
  margin-bottom: 10px;
  line-height: 1.5;
}
.card p { font-size: 1.05rem; color: var(--ink); }
.card .card-note { margin-top: 12px; font-size: 0.95rem; color: var(--annot); }

/* 三個座位卡：金徽記 */
.seat-card { border-top: 3px solid var(--gold); }
.seat-card .seat-no {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}
.seat-card .seat-role {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.4rem;
  color: var(--ink-strong);
  margin: 6px 0 2px;
}
.seat-card .seat-name { font-size: 1.05rem; color: var(--accent); font-weight: 700; margin-bottom: 12px; }

/* ---- 方案 ---- */
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
@media (max-width: 860px) { .plan-grid { grid-template-columns: 1fr; } }
.plan {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
}
.plan--featured { border: 2px solid var(--gold); position: relative; }
.plan--featured::before {
  content: '創始期主力';
  position: absolute;
  top: -12px;
  left: 24px;
  padding: 2px 12px;
  border-radius: 999px;
  background: var(--gold);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.plan .plan-tier { margin-bottom: 8px; }
.plan .plan-name {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.45rem;
  color: var(--ink-strong);
}
.plan .plan-price {
  margin: 14px 0 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.9rem;
  color: var(--ink-strong);
}
.plan .plan-price small { font-size: 0.95rem; font-weight: 400; color: var(--annot); }
.plan .plan-origin { font-size: 0.95rem; color: var(--annot); }
.plan .plan-origin s { color: var(--annot); }
.plan ul { list-style: none; margin: 18px 0 0; flex: 1; }
.plan ul li {
  padding: 8px 0 8px 26px;
  position: relative;
  font-size: 1.02rem;
  border-top: 1px dashed var(--line);
}
.plan ul li::before {
  content: '◆';
  position: absolute;
  left: 2px;
  color: var(--gold);
  font-size: 0.7rem;
  top: 11px;
}
.plan .plan-cap { margin-top: 16px; font-size: 0.93rem; color: var(--annot); }

/* ---- 引言（精神）---- */
.creed {
  background: var(--ink-strong);
  border-radius: 18px;
  padding: 56px 48px;
  color: #e8e4da;
}
@media (max-width: 640px) { .creed { padding: 40px 24px; } }
.creed .mono { color: var(--gold); margin-bottom: 18px; display: block; }
.creed blockquote {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
  line-height: 1.7;
  border: none;
}
.creed blockquote em { font-style: normal; color: var(--gold); }
.creed .creed-note { margin-top: 22px; font-size: 1.08rem; color: #a9b0ba; max-width: 620px; }
@media (prefers-color-scheme: dark) {
  .creed { background: var(--paper-raised); border: 1px solid var(--line-strong); color: var(--ink); }
  .creed blockquote { color: var(--ink-strong); }
  .creed .creed-note { color: var(--annot); }
}

/* ---- 時間軸（consult 流程／about 合作史）---- */
.timeline { list-style: none; }
.timeline li {
  position: relative;
  padding: 0 0 28px 34px;
  border-left: 1px solid var(--line-strong);
  margin-left: 8px;
}
.timeline li:last-child { border-left-color: transparent; padding-bottom: 0; }
.timeline li::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 4px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--accent);
}
.timeline .tl-time { display: block; margin-bottom: 4px; }
.timeline .tl-title { font-weight: 700; color: var(--ink-strong); }
.timeline .tl-desc { font-size: 1.02rem; color: var(--ink); margin-top: 2px; }

/* ---- FAQ ---- */
.faq-list { max-width: 760px; }
.faq-list details {
  border-top: 1px solid var(--line);
  padding: 4px 0;
}
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary {
  cursor: pointer;
  padding: 16px 0;
  font-weight: 700;
  color: var(--ink-strong);
  list-style: none;
  position: relative;
  padding-right: 32px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: '＋';
  position: absolute;
  right: 4px;
  color: var(--accent);
  font-weight: 400;
}
.faq-list details[open] summary::after { content: '－'; }
.faq-list .faq-body { padding: 0 0 18px; font-size: 1.05rem; max-width: 680px; }

/* ---- 候補表單 ---- */
.cta-panel {
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  padding: 48px;
  max-width: 720px;
  margin: 0 auto;
}
@media (max-width: 640px) { .cta-panel { padding: 32px 22px; } }
.cta-panel .section-title { font-size: 1.5rem; }
.cta-panel .cta-note { margin: 12px 0 26px; font-size: 1.05rem; }
.lead-form .field { margin-bottom: 16px; }
.lead-form label {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink-strong);
  margin-bottom: 6px;
}
.lead-form input[type='text'],
.lead-form input[type='email'] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--paper);
  color: var(--ink-strong);
  font-size: 1rem;
  font-family: var(--font-zh);
}
.lead-form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }
.lead-form .btn { width: 100%; margin-top: 6px; }
.form-msg { margin-top: 12px; font-size: 1rem; min-height: 1.4em; }
.form-msg.ok { color: var(--accent); }
.form-msg.err { color: #c0392b; }
.form-privacy { margin-top: 14px; font-size: 0.9rem; color: var(--annot); }

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
}
.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 24px 48px;
}
.footer-inner .mono { display: block; margin-bottom: 10px; }
.eco-links { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-bottom: 24px; }
.eco-links a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--annot);
  text-decoration: none;
}
.eco-links a:hover { color: var(--accent); }
.footer-copy { font-size: 0.9rem; color: var(--annot); }

/* ---- 通用 ---- */
.center { text-align: center; }
.gold-text { color: var(--gold); }
.accent-text { color: var(--accent); }
a.text-link { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a.text-link:hover { color: var(--accent-hover); }

/* 404 */
.notfound {
  min-height: 55vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 24px;
}
.notfound h1 {
  font-family: var(--font-display);
  font-size: 3.4rem;
  color: var(--ink-strong);
}
.notfound p { margin: 12px 0 26px; color: var(--annot); }

/* ============================================================
   圓桌討論區（/forum/）
   ============================================================ */

.member-bar { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.linkish {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.linkish:hover { color: var(--accent-hover); }

.board-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.board-tabs button {
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 8px 18px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--ink);
  cursor: pointer;
}
.board-tabs button:hover { border-color: var(--accent); color: var(--accent); }
.board-tabs .tab-active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.post-list { list-style: none; }
.post-list li {
  padding: 18px 4px;
  border-top: 1px solid var(--line);
}
.post-list li:last-child { border-bottom: 1px solid var(--line); }
.post-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink-strong);
  text-decoration: none;
  line-height: 1.5;
}
.post-title:hover { color: var(--accent); }
.pin-badge {
  display: inline-block;
  background: var(--gold-soft);
  color: var(--gold);
  padding: 1px 10px;
  border-radius: 999px;
  margin-right: 8px;
  font-size: 0.75rem;
}
.post-meta {
  font-size: 0.82rem;
  color: var(--annot);
  margin-top: 6px;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  align-items: center;
}

.pagination { display: flex; gap: 8px; margin-top: 26px; align-items: center; }
.pagination button {
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  padding: 6px 13px;
  border-radius: 8px;
  font-family: var(--font-mono);
  color: var(--ink);
  cursor: pointer;
}
.pagination button:disabled { opacity: 0.4; cursor: default; }
.pagination .pg-active { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.composer { max-width: 760px; }
.composer-row { display: flex; gap: 16px; flex-wrap: wrap; }
.composer select,
.composer textarea,
.composer input[type='text'],
.composer input[type='url'] {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--paper);
  color: var(--ink-strong);
  font-size: 1rem;
  font-family: var(--font-zh);
}
.composer select:focus,
.composer textarea:focus,
.composer input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}
.composer label {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink-strong);
  margin-bottom: 6px;
}
.composer .field { margin-bottom: 16px; }
.composer .btn { margin-top: 4px; }

.post-body { max-width: 760px; }
.post-body p { margin: 0 0 1em; }
.post-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

.reply-list { list-style: none; max-width: 760px; }
.reply-list li { padding: 18px 0; border-top: 1px solid var(--line); }

.post-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
#like-btn.liked { background: var(--teal-soft); }

.share-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 1.6rem; }
.share-btn {
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  color: var(--ink);
  padding: 5px 13px;
  border-radius: 999px;
  font-size: 0.75rem;
  cursor: pointer;
  text-decoration: none;
}
.share-btn:hover { border-color: var(--accent); color: var(--accent); }
.share-label { color: var(--annot); }

/* ---- 後臺相容層（admin 頁沿用 empower class 名，內部工具最小樣式）---- */
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.page-hero { padding: 56px 0 24px; }
.page-hero h1 { font-family: var(--font-serif); font-weight: 900; font-size: 2rem; color: var(--ink-strong); }
.eyebrow { display: block; margin-bottom: 8px; color: var(--accent); }
.breadcrumb { color: var(--annot); text-decoration: none; }
.section-lead { max-width: 640px; color: var(--ink); margin-top: 10px; }
.section-alt { padding: 40px 0 72px; }
.section-note { color: var(--annot); font-size: 0.95rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .grid-3 { grid-template-columns: 1fr; } }
.card-label { display: block; margin-bottom: 8px; }
.admin-table-wrap { overflow-x: auto; }
.admin-table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
.admin-table th, .admin-table td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.admin-table th { background: var(--paper-raised); font-family: var(--font-mono); font-size: 0.78rem; }
.logo { display: flex; align-items: center; gap: 8px; text-decoration: none; }
.logo-mark { color: var(--gold); }
.logo-text { font-family: var(--font-mono); font-weight: 500; color: var(--ink-strong); }
.logo-tld { color: var(--accent); }
.footer-brand .footer-tagline { color: var(--annot); font-size: 0.85rem; }
.footer-nav { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-nav a { color: var(--annot); text-decoration: none; font-family: var(--font-mono); font-size: 0.85rem; }
.btn-ghost {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 999px;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font-zh);
}
.btn-ghost:hover { background: var(--teal-soft); }