/* =============================================================
   共生社區 MutualHelp Community · style.css
   （網站由暨大社區福祉研究室 / 梁鎧麟團隊維護）
   品牌規格參見 CLAUDE.md §🎨 品牌視覺規格
   ============================================================= */

/* ---------- CSS 變數 ---------- */
:root {
  --color-primary: #3D5A3E;
  --color-primary-mid: #5A7A5C;
  --color-primary-light: #8AAB8B;
  --color-secondary: #8B6F47;
  --color-gold: #C9A84C;
  --color-bg: #FAF8F4;
  --color-dark: #1A1F1A;

  --font-zh-display: 'Noto Serif TC', serif;
  --font-en-display: 'Cormorant Garamond', serif;
  --font-body: 'Noto Sans TC', sans-serif;

  --container-max: 1180px;
  --header-h: 72px;
  --transition-base: 0.3s ease;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-dark);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-gold);
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--font-zh-display);
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin: 0 0 0.6em;
  line-height: 1.4;
}

p {
  margin: 0 0 1em;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ---------- Scroll-in 動效 ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  will-change: opacity, transform;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================================
   Header / Nav
   ============================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-primary);
}

.site-header__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 12px 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* 橫式 Logo */
.logo-h {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-primary);
}

.logo-h__mark {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.logo-h__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-h__zh {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 16px;
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.logo-h__en {
  font-family: var(--font-en-display);
  font-style: italic;
  font-weight: 300;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--color-primary-mid);
}

/* Primary nav */
.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 32px;
}

.primary-nav a {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  padding: 8px 4px;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.primary-nav a:hover {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
  transform: translateY(-2px);
}

/* Hamburger toggle（< 768px 才顯示） */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 8px;
  flex-direction: column;
  justify-content: space-between;
  align-items: stretch;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-primary);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* =============================================================
   Section 通用骨架
   ============================================================= */
.section {
  padding: 96px 0;
  border-bottom: 1px solid rgba(61, 90, 62, 0.08);
}

.section:last-of-type {
  border-bottom: none;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header__en {
  font-family: var(--font-en-display);
  font-style: italic;
  font-weight: 300;
  font-size: 18px;
  letter-spacing: 0.3em;
  color: var(--color-primary-mid);
  margin: 0 0 12px;
  text-transform: capitalize;
}

.section-header__zh {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 32px;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin: 0;
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}

.section-header__zh::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 48px;
  height: 1px;
  background: var(--color-gold);
}

/* 占位提示（Phase 1 暫用） */
.section-placeholder {
  text-align: center;
  font-family: var(--font-en-display);
  font-style: italic;
  color: var(--color-primary-light);
  letter-spacing: 0.2em;
  padding: 64px 0;
  font-size: 18px;
}

/* =============================================================
   Hero
   ============================================================= */
.hero {
  padding: 96px 0 80px;
  text-align: center;
}

.hero__inner {
  width: 100%;
}

.hero__logo {
  width: 140px;
  height: 140px;
  margin: 0 auto 32px;
  display: block;
}

.hero__title {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 64px;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  margin: 0 0 12px;
  line-height: 1.2;
  text-indent: 0.2em;     /* 抵消最後一字尾的 letter-spacing 視覺偏移 */
}

.hero__subtitle {
  font-family: var(--font-en-display);
  font-style: italic;
  font-weight: 300;
  font-size: 24px;
  letter-spacing: 0.3em;
  color: var(--color-primary-mid);
  margin: 0 0 36px;
}

.hero__tagline {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 17px;
  line-height: 2;
  letter-spacing: 0.1em;
  color: var(--color-dark);
  max-width: 640px;
  margin: 0 auto 56px;
}

.hero__missions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 880px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.mission-card {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.15);
  padding: 28px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.mission-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
}

.mission-card__icon {
  font-size: 32px;
  line-height: 1;
}

.mission-card__label {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  text-align: center;
  line-height: 1.6;
}

/* =============================================================
   Section 1 — 關於我們
   ============================================================= */

/* 1-1 intro */
.about-intro {
  margin-bottom: 80px;
}

.about-intro__paragraph {
  max-width: 820px;
  margin: 0 auto 56px;
  font-size: 17px;
  line-height: 2;
  color: var(--color-dark);
  letter-spacing: 0.05em;
}

.mission-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding: 0;
  list-style: none;
}

.mission-detail {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.15);
  padding: 28px 28px 32px;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.mission-detail:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
}

.mission-detail__icon {
  font-size: 28px;
  line-height: 1;
  display: inline-block;
  margin-bottom: 12px;
}

.mission-detail__title {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 18px;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin: 0 0 12px;
}

.mission-detail__text {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--color-dark);
  margin: 0;
}

/* 1-2 團隊組織 */
.org-section {
  margin-bottom: 80px;
}

.sub-heading {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  text-align: center;
  margin: 0 0 36px;
  position: relative;
  padding-bottom: 12px;
}

.sub-heading::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 32px;
  height: 1px;
  background: var(--color-gold);
}

.org-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  padding: 0;
  list-style: none;
}

.org-card {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.12);
  border-left: 4px solid var(--color-primary);
  padding: 24px 28px;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.org-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
  border-left-color: var(--color-gold);
}

.org-card__name {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 16px;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin: 0 0 14px;
  line-height: 1.6;
}

.org-card__people {
  margin: 0;
}

.org-person {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 12px;
  font-size: 14px;
  line-height: 1.8;
}

.org-person dt {
  color: var(--color-dark);
  font-weight: 400;
}

.org-person dd {
  margin: 0;
  color: var(--color-primary-mid);
  letter-spacing: 0.05em;
}

/* 多名成員共用同職稱：用 chip 排版（chip 不可斷字，超寬自動 flex-wrap） */
.org-person--chips dt {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 5px;
  align-items: center;
}

.member-chip {
  white-space: nowrap;
  display: inline-block;
  padding: 2px 8px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--color-dark);
  background: rgba(61, 90, 62, 0.05);
  border: 1px solid rgba(61, 90, 62, 0.18);
  border-radius: 3px;
}

/* 1-3 Profile Card */
.profile-card {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.12);
  padding: 48px;
  max-width: 980px;
  margin: 0 auto;
}

.profile-card__header {
  display: flex;
  align-items: center;
  gap: 32px;
  border-bottom: 1px solid rgba(61, 90, 62, 0.12);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.profile-card__photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-primary);
  flex-shrink: 0;
  display: block;
}

.profile-card__intro {
  flex: 1;
  min-width: 0;
}

.profile-card__name {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 28px;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin: 0 0 8px;
}

.profile-card__name-en {
  font-family: var(--font-en-display);
  font-style: italic;
  font-weight: 300;
  font-size: 20px;
  letter-spacing: 0.2em;
  color: var(--color-primary-mid);
  margin-left: 12px;
}

.profile-card__title {
  font-size: 14px;
  color: var(--color-primary-mid);
  letter-spacing: 0.08em;
  margin: 0;
}

.profile-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 40px;
  margin-bottom: 40px;
}

.profile-block__title {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 16px;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 3px solid var(--color-gold);
}

.profile-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.profile-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--color-dark);
}

.profile-list li::before {
  content: "・";
  position: absolute;
  left: 0;
  color: var(--color-primary-mid);
}

.profile-expertise {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--color-dark);
  margin: 0;
  letter-spacing: 0.05em;
}

.profile-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.profile-link {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
  border: 1px solid rgba(61, 90, 62, 0.2);
  color: var(--color-primary);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.profile-link:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
  color: var(--color-primary);
}

.profile-link__label {
  font-family: var(--font-en-display);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--color-primary-mid);
}

.profile-link__value {
  font-size: 13px;
  color: var(--color-dark);
  margin-top: 2px;
}

/* 著作 accordion */
.profile-publications {
  margin-bottom: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(61, 90, 62, 0.12);
}

.pub-list {
  margin: 0;
  padding: 0 0 0 24px;
  list-style: decimal;
}

.pub-item {
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-dark);
  margin-bottom: 18px;
}

.pub-item__cite {
  margin: 0 0 6px;
}

.pub-item__cite em {
  font-style: italic;
  color: var(--color-primary);
}

.pub-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 13px;
}

.pub-doi {
  font-family: var(--font-en-display);
  font-style: italic;
  color: var(--color-primary-mid);
  letter-spacing: 0.05em;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.pub-doi:hover {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
}

.pub-item--hidden {
  display: none;
}

.pub-list.is-expanded .pub-item--hidden {
  display: list-item;
}

.tag {
  display: inline-block;
  padding: 2px 10px;
  font-family: var(--font-zh-display);
  font-size: 12px;
  letter-spacing: 0.1em;
  border-radius: 2px;
  line-height: 1.6;
}

.tag--ssci {
  background: var(--color-gold);
  color: #fff;
}

.tag--role {
  background: transparent;
  border: 1px solid var(--color-primary-mid);
  color: var(--color-primary-mid);
}

.tag--upcoming {
  background: var(--color-secondary);
  color: #fff;
  margin-left: 8px;
}

.pub-toggle {
  display: block;
  margin: 20px auto 0;
  padding: 10px 24px;
  font-family: var(--font-zh-display);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  background: transparent;
  border: 1px solid var(--color-primary);
  transition: transform var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.pub-toggle:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* 專書 + 計畫 */
.profile-books,
.profile-projects {
  margin-bottom: 32px;
}

.book-list,
.project-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.book-list li,
.project-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--color-dark);
  margin-bottom: 6px;
}

.book-list li::before,
.project-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-gold);
  font-weight: 400;
}

.project-list li strong {
  color: var(--color-primary);
  font-weight: 400;
}

/* =============================================================
   Section 2 — 研發案例
   ============================================================= */
.rd-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding: 0;
  list-style: none;
}

.rd-card {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.15);
  padding: 32px 32px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.rd-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
}

.rd-card--featured {
  grid-column: span 2;
  border-left: 4px solid var(--color-gold);
}

.rd-card__num {
  font-family: var(--font-en-display);
  font-style: italic;
  font-weight: 300;
  font-size: 36px;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  line-height: 1;
  display: block;
  margin-bottom: 8px;
}

.rd-card__title {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin: 0 0 16px;
  line-height: 1.5;
}

.rd-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0;
  margin: 0 0 16px;
  list-style: none;
}

.rd-tag {
  font-family: var(--font-en-display);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border: 1px solid var(--color-primary-light);
  color: var(--color-primary-mid);
  line-height: 1.6;
  border-radius: 2px;
}

.rd-card__desc {
  font-size: 14px;
  line-height: 1.95;
  color: var(--color-dark);
  margin: 0 0 20px;
  flex-grow: 1;
}

.rd-status {
  align-self: flex-start;
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 13px;
  letter-spacing: 0.15em;
  padding: 5px 14px;
  color: #fff;
  border-radius: 2px;
}

.rd-status--live {
  background: var(--color-gold);
}

/* =============================================================
   Section 3 — 共生社區理念（Tabs）
   ============================================================= */
.tab-bar {
  display: flex;
  justify-content: center;
  gap: 0;
  border-bottom: 1px solid rgba(61, 90, 62, 0.18);
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 16px;
  letter-spacing: 0.18em;
  color: var(--color-primary-mid);
  padding: 14px 28px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  margin-bottom: -1px;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.tab-btn:hover {
  color: var(--color-gold);
}

.tab-btn.is-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-gold);
}

.tab-panel {
  animation: tabFadeIn 0.4s ease;
}

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Tab A — 概念卡 */
.concept-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
}

.concept-card {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.12);
  padding: 32px;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.concept-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
}

.concept-card__num {
  font-family: var(--font-en-display);
  font-style: italic;
  font-weight: 300;
  font-size: 32px;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 8px;
  line-height: 1;
}

.concept-card__title {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin: 0 0 14px;
  line-height: 1.5;
}

.concept-card p {
  font-size: 14.5px;
  line-height: 2;
  color: var(--color-dark);
  letter-spacing: 0.03em;
  margin: 0;
}

.concept-cite {
  max-width: 880px;
  margin: 24px auto 0;
  padding: 20px 28px;
  border-left: 4px solid var(--color-gold);
  background: rgba(201, 168, 76, 0.06);
  font-size: 14px;
  line-height: 1.95;
  color: var(--color-dark);
}

.concept-cite strong {
  color: var(--color-primary);
  font-weight: 400;
}

/* Tab B — 案例卡 */
.case-region-heading {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 18px;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  text-align: center;
  margin: 16px 0 32px;
}

.case-region-heading--tw {
  margin-top: 56px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
}

.case-card {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.12);
  padding: 24px 26px;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.case-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
}

.case-card--featured {
  border-left: 4px solid var(--color-gold);
}

.case-card header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.case-card__flag {
  font-size: 20px;
  line-height: 1;
}

.case-card__region {
  font-family: var(--font-zh-display);
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--color-primary-mid);
}

.case-card__name {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin: 0 0 8px;
  line-height: 1.5;
}

.case-card__type {
  font-size: 13px;
  color: var(--color-secondary);
  letter-spacing: 0.08em;
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(61, 90, 62, 0.18);
}

.case-card__points {
  margin: 0;
  padding: 0;
  list-style: none;
}

.case-card__points li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.case-card__points li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-gold);
}

/* Tab C — 數字牆 */
.stat-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px 24px;
  margin: 32px 0;
  padding: 0;
  list-style: none;
}

.stat-tile {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.12);
  padding: 40px 24px 32px;
  text-align: center;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.stat-tile:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
}

.stat-tile__num {
  font-family: var(--font-en-display);
  font-style: italic;
  font-weight: 300;
  font-size: 64px;
  color: var(--color-gold);
  letter-spacing: 0.02em;
  line-height: 1;
  margin: 0 0 14px;
}

.stat-tile__plus {
  font-size: 36px;
  vertical-align: super;
  line-height: 1;
}

.stat-tile__label {
  font-family: var(--font-zh-display);
  font-size: 14px;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin: 0 0 4px;
}

.stat-tile__unit {
  font-size: 12px;
  color: var(--color-primary-mid);
  letter-spacing: 0.1em;
  margin: 0;
}

/* =============================================================
   Section 4 — 實作工具
   ============================================================= */
.tool-form {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.15);
  padding: 40px;
  margin-bottom: 40px;
  max-width: 980px;
  margin-inline: auto;
}

.tool-header {
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid rgba(61, 90, 62, 0.12);
}

.tool-header__num {
  font-family: var(--font-en-display);
  font-style: italic;
  font-weight: 300;
  font-size: 20px;
  color: var(--color-gold);
  letter-spacing: 0.2em;
  margin: 0 0 6px;
}

.tool-header__title {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin: 0 0 14px;
  line-height: 1.5;
}

.tool-header__desc {
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-primary-mid);
  margin: 0;
  letter-spacing: 0.03em;
}

.tool-fields {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px 32px;
}

#toolForm3 .tool-fields {
  grid-template-columns: 1fr;
  gap: 24px;
}

.field {
  display: flex;
  flex-direction: column;
}

.field label {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 14.5px;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  padding-left: 10px;
  border-left: 3px solid var(--color-gold);
  margin-bottom: 6px;
}

.field__hint {
  font-size: 12.5px;
  color: var(--color-primary-mid);
  margin: 0 0 8px;
  line-height: 1.65;
  letter-spacing: 0.03em;
}

.field textarea {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-dark);
  padding: 12px 14px;
  background: var(--color-bg);
  border: 1px solid rgba(61, 90, 62, 0.2);
  resize: vertical;
  min-height: 64px;
  width: 100%;
  box-sizing: border-box;
  transition: border-color var(--transition-base), background var(--transition-base);
}

.field textarea:focus {
  outline: none;
  border-color: var(--color-gold);
  background: #fff;
}

.field textarea::placeholder {
  color: rgba(61, 90, 62, 0.5);
  font-style: italic;
}

.tool-actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.action-btn {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.15em;
  padding: 12px 28px;
  color: var(--color-primary);
  background: transparent;
  border: 1px solid var(--color-primary);
  cursor: pointer;
  transition: transform var(--transition-base), border-color var(--transition-base), color var(--transition-base), background var(--transition-base);
}

.action-btn:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.action-btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.action-btn--primary:hover {
  background: var(--color-primary-mid);
  color: #fff;
  border-color: var(--color-gold);
}

/* 工具預覽列表（暫不開放完整表單） */
.tools-subtitle {
  text-align: center;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 15.5px;
  color: var(--color-primary-mid);
  letter-spacing: 0.08em;
  max-width: 680px;
  margin: -16px auto 48px;
  line-height: 1.85;
}

.tool-preview-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.tool-preview {
  background: #fff;
  border: 1px solid rgba(61, 90, 62, 0.12);
  border-left: 4px solid var(--color-primary);
  padding: 24px 28px 22px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.tool-preview:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
  border-left-color: var(--color-gold);
}

.tool-preview__num {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin: 0 0 4px;
}

.tool-preview__title {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 18px;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin: 0 0 6px;
  line-height: 1.5;
}

.tool-preview__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-dark);
  margin: 0;
}

.tool-preview__hint {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--color-primary-mid);
  letter-spacing: 0.03em;
  margin: 14px 0 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(61, 90, 62, 0.18);
}

.tool-preview__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  padding: 7px 16px;
  background: var(--color-primary);
  color: #fff !important;
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 13px;
  letter-spacing: 0.12em;
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  transition: transform var(--transition-base), background var(--transition-base), border-color var(--transition-base);
}

.tool-preview__cta:hover {
  transform: translateY(-2px);
  background: var(--color-primary-mid);
  border-color: var(--color-gold);
  color: #fff !important;
}

.tool-preview__cta svg {
  width: 16px;
  height: 16px;
  color: #fff;
  flex-shrink: 0;
}

/* =============================================================
   Footer
   ============================================================= */
.site-footer {
  background: var(--color-dark);
  color: var(--color-bg);
  padding-top: 64px;
}

.site-footer h3 {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 16px;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  margin: 0 0 16px;
}

.site-footer p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(250, 248, 244, 0.85);
  margin: 0 0 8px;
}

.site-footer a {
  color: rgba(250, 248, 244, 0.85);
}

.site-footer a:hover {
  color: var(--color-gold);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

/* Footer 品牌欄 */
.site-footer__brand .logo-h__mark--inverse {
  width: 56px;
  height: 56px;
  margin-bottom: 16px;
}

.site-footer__zh {
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 18px;
  letter-spacing: 0.15em;
  color: var(--color-bg);
  margin: 0 0 4px;
}

.site-footer__en {
  font-family: var(--font-en-display);
  font-style: italic;
  font-weight: 300;
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--color-gold);
  margin: 0 0 16px;
}

.site-footer__maintainer {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(250, 248, 244, 0.65);
  margin: 0 0 4px;
}

.site-footer__copy {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(250, 248, 244, 0.55);
  margin-top: 12px;
}

/* Footer 快速連結 */
.site-footer__links ul {
  margin-bottom: 24px;
}

.site-footer__links li {
  margin-bottom: 8px;
}

.site-footer__partners {
  font-size: 13px;
  line-height: 1.9;
}

/* LINE 按鈕 */
.line-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 12px 20px;
  background: var(--color-primary);
  color: #fff !important;
  border-radius: 4px;
  font-family: var(--font-zh-display);
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.1em;
  border: 1px solid var(--color-primary);
  transition: transform var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

.line-button:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
  color: #fff !important;
  background: var(--color-primary-mid);
}

.line-button__icon {
  width: 20px;
  height: 20px;
  color: #fff;
  flex-shrink: 0;
}

/* Footer 底欄 */
.site-footer__bottom {
  border-top: 1px solid rgba(61, 90, 62, 0.5);
  padding: 24px 0;
  text-align: center;
}

.site-footer__bottom p {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(250, 248, 244, 0.5);
  margin: 0;
}

/* =============================================================
   響應式（≤ 768px）
   ============================================================= */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-primary);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
  }

  .primary-nav.is-open {
    max-height: 360px;
  }

  .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 16px;
  }

  .primary-nav a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid rgba(61, 90, 62, 0.15);
  }

  .primary-nav a:hover {
    transform: none;
  }

  .logo-h__zh {
    font-size: 15px;
  }

  .logo-h__en {
    font-size: 11px;
  }

  .hero {
    padding: 64px 0 56px;
  }

  .hero__logo {
    width: 100px;
    height: 100px;
    margin-bottom: 24px;
  }

  .hero__title {
    font-size: 40px;
    letter-spacing: 0.15em;
  }

  .hero__subtitle {
    font-size: 18px;
    margin-bottom: 28px;
  }

  .hero__tagline {
    font-size: 15px;
    margin-bottom: 40px;
  }

  .hero__missions {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .mission-detail-grid,
  .org-grid,
  .rd-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .rd-card,
  .rd-card--featured {
    grid-column: auto;
    padding: 24px 22px;
  }

  .rd-card__title {
    font-size: 17px;
  }

  .tab-bar {
    gap: 0;
  }

  .tab-btn {
    padding: 12px 16px;
    font-size: 14px;
    letter-spacing: 0.1em;
  }

  .concept-grid,
  .case-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .concept-card,
  .case-card {
    padding: 24px 20px;
  }

  .stat-wall {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 16px;
  }

  .stat-tile__num {
    font-size: 48px;
  }

  .stat-tile__plus {
    font-size: 28px;
  }

  .tool-form {
    padding: 24px 20px;
  }

  .tool-header__title {
    font-size: 18px;
  }

  .tool-fields {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .tool-preview {
    padding: 20px 22px;
  }

  .tool-preview__cta {
    align-self: stretch;
    justify-content: center;
  }

  .profile-card {
    padding: 28px 20px;
  }

  .profile-card__header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
  }

  .profile-card__photo {
    width: 120px;
    height: 120px;
  }

  .profile-card__name {
    font-size: 22px;
  }

  .profile-card__name-en {
    font-size: 16px;
    display: block;
    margin-left: 0;
    margin-top: 4px;
  }

  .profile-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .org-person {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .section {
    padding: 64px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-header__zh {
    font-size: 24px;
  }

  .section-header__en {
    font-size: 15px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* =============================================================
   列印
   ============================================================= */
@media print {
  .site-header,
  .site-footer,
  .nav-toggle {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .section {
    page-break-inside: avoid;
    padding: 16px 0;
    border: none;
  }

  /* 列印工具 3 焦點模式（表單目前已下架，規則保留待 uncomment 啟用） */
  body.is-printing-tool .hero,
  body.is-printing-tool .section--about,
  body.is-printing-tool .section--cases,
  body.is-printing-tool .section--concept,
  body.is-printing-tool .section-header,
  body.is-printing-tool .tools-subtitle,
  body.is-printing-tool .tool-preview-list,
  body.is-printing-tool #toolForm1,
  body.is-printing-tool #toolForm2,
  body.is-printing-tool .tool-actions {
    display: none !important;
  }

  body.is-printing-tool .tool-form {
    border: 1px solid #333;
    padding: 24px;
    max-width: 100%;
  }

  body.is-printing-tool .field textarea {
    background: #fff;
    border: 1px solid #999;
    color: #000;
    min-height: 72px;
  }
}