/* ============================================================
   CK48 Reunion — Main CSS
   建中第48屆畢業30年重聚官方網站
   ============================================================ */

/* ── Design Tokens ──────────────────────────────────────────── */
:root {
  --color-primary:    #1F3A5F;
  --color-secondary:  #7A2E3A;
  --color-accent:     #B08D57;
  --color-bg:         #F7F3EE;
  --color-surface:    #FFFFFF;
  --color-text:       #222222;
  --color-text-muted: #666666;
  --color-border:     #DDDDDD;
  --color-primary-light: #2A4F82;
  --color-accent-light:  #C9A96E;

  --font-sans: 'Noto Sans TC', 'Inter', system-ui, -apple-system, sans-serif;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  --shadow-sm:  0 1px 4px rgba(0,0,0,.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.14);

  --transition: .25s ease;

  --container-max: 1200px;
  --container-md:  840px;
  --gap:           clamp(16px, 3vw, 40px);
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── Typography ─────────────────────────────────────────────── */
h1 { font-size: clamp(32px, 5vw, 56px); line-height: 1.2; font-weight: 700; }
h2 { font-size: clamp(26px, 3.5vw, 40px); line-height: 1.25; font-weight: 700; }
h3 { font-size: clamp(20px, 2.5vw, 28px); line-height: 1.3; font-weight: 600; }
h4 { font-size: clamp(18px, 2vw, 22px); line-height: 1.35; font-weight: 600; }
p  { line-height: 1.75; }

/* ── Layout helpers ─────────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gap);
}
.container--md {
  max-width: var(--container-md);
  margin-inline: auto;
  padding-inline: var(--gap);
}
.section {
  padding-block: clamp(56px, 8vw, 100px);
}
.section--alt { background: var(--color-surface); }
.section--dark {
  background: var(--color-primary);
  color: #fff;
}
.section--accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, #2d4f7a 100%);
  color: #fff;
}

/* ── Section Title ──────────────────────────────────────────── */
.section-title {
  text-align: center;
  margin-bottom: clamp(32px, 5vw, 56px);
}
.section-title__eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 10px;
}
.section-title__main {
  color: var(--color-primary);
  margin-bottom: 12px;
}
.section-dark .section-title__main,
.section--dark .section-title__main { color: #fff; }
.section-title__sub {
  font-size: 17px;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
}
.section--dark .section-title__sub { color: rgba(255,255,255,.7); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn--primary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--secondary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn--secondary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
}
.btn--outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.6);
}
.btn--outline-light:hover {
  background: rgba(255,255,255,.15);
  border-color: #fff;
}
.btn--lg { padding: 16px 36px; font-size: 17px; }
.btn--sm { padding: 8px 18px; font-size: 13px; }
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ── Badge / Tag ────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
}
.badge--primary   { background: var(--color-primary);   color: #fff; }
.badge--secondary { background: var(--color-secondary); color: #fff; }
.badge--accent    { background: var(--color-accent);    color: #fff; }
.badge--outline   { background: transparent; color: var(--color-primary); border: 1.5px solid var(--color-primary); }
.badge--light     { background: rgba(31,58,95,.1); color: var(--color-primary); }
.badge--news      { background: #EAF0F8; color: var(--color-primary); }

/* ── Header ─────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 68px;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gap);
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-logo__emblem {
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -.02em;
  flex-shrink: 0;
}
.header-logo__text { line-height: 1.2; }
.header-logo__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
}
.header-logo__sub {
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: .04em;
}
.header-nav { display: flex; align-items: center; gap: 4px; }
.header-nav__item {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.header-nav__item:hover,
.header-nav__item.active {
  color: var(--color-primary);
  background: rgba(31,58,95,.08);
}
.header-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.header-menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  border-radius: var(--radius-sm);
  flex-direction: column;
  gap: 5px;
  transition: background var(--transition);
}
.header-menu-btn:hover { background: rgba(31,58,95,.08); }
.header-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}
.header-menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header-menu-btn.open span:nth-child(2) { opacity: 0; }
.header-menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 68px; left: 0; right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  z-index: 999;
  overflow-y: auto;
  max-height: calc(100vh - 68px);
}
.mobile-menu.open { display: block; }
.mobile-menu__nav {
  padding: 12px var(--gap) 24px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mobile-menu__item {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  transition: background var(--transition), color var(--transition);
}
.mobile-menu__item:hover { background: rgba(31,58,95,.08); color: var(--color-primary); }
.mobile-menu__cta { padding: 12px var(--gap) 24px; border-top: 1px solid var(--color-border); }

/* Page offset for fixed header */
.page-top { padding-top: 68px; }

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,.85);
  padding-block: 56px 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-brand__emblem {
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
}
.footer-brand__name {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.footer-brand__sub { font-size: 12px; opacity: .7; }
.footer-brand__desc { font-size: 14px; line-height: 1.7; opacity: .75; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social__link {
  width: 38px;
  height: 38px;
  background: rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: background var(--transition);
}
.footer-social__link:hover { background: rgba(255,255,255,.2); }
.footer-col__title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.footer-nav { display: flex; flex-direction: column; gap: 8px; }
.footer-nav__item { font-size: 14px; opacity: .8; transition: opacity var(--transition); }
.footer-nav__item:hover { opacity: 1; }
.footer-info { font-size: 13px; display: flex; flex-direction: column; gap: 8px; opacity: .75; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  opacity: .65;
}
.footer-hashtag { color: var(--color-accent); font-weight: 600; opacity: 1; }

/* ── Hero（全寬視覺橫幅）────────────────────────────────────── */
.hero {
  position: relative;
  min-height: clamp(560px, 70vw, 820px);
  display: flex;
  align-items: center;
  background: #0d1f38;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(8,20,36,0.84) 0%,
    rgba(8,20,36,0.62) 50%,
    rgba(8,20,36,0.28) 100%
  );
}
.hero__content {
  position: relative;
  z-index: 1;
  padding-block: clamp(64px, 8vw, 100px);
  max-width: 860px;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .20em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 20px;
}
.hero__eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-accent);
  flex-shrink: 0;
}
.hero__title {
  font-size: clamp(36px, 5.5vw, 68px);
  font-weight: 800;
  line-height: 1.12;
  margin: 0 0 14px;
  color: #fff;
  letter-spacing: .01em;
}
.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}
.hero__slogan {
  font-size: clamp(15px, 1.6vw, 20px);
  color: rgba(255,255,255,.65);
  font-weight: 500;
  letter-spacing: .12em;
  margin-bottom: 40px;
}
.hero__cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn--accent {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn--accent:hover {
  background: #9a7a48;
  border-color: #9a7a48;
  color: #fff;
}
.btn--outline-white {
  background: transparent;
  border: 2px solid rgba(255,255,255,.50);
  color: #fff;
}
.btn--outline-white:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.85);
  color: #fff;
}
.btn--disabled,
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
  filter: grayscale(30%);
}
@media (max-width: 600px) {
  .hero__cta { flex-direction: column; }
  .hero__cta .btn { text-align: center; justify-content: center; }
}

/* ── Page Hero (inner pages) ────────────────────────────────── */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #2a4f7c 100%);
  color: #fff;
  padding-block: clamp(48px, 8vw, 88px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 80% at 80% 50%, rgba(176,141,87,.10) 0%, transparent 60%);
}
.page-hero__content { position: relative; z-index: 1; }
.page-hero__eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.page-hero__title { color: #fff; margin-bottom: 12px; }
.page-hero__sub { font-size: 17px; color: rgba(255,255,255,.7); max-width: 500px; margin-inline: auto; }


/* ── Homepage Event Strip（左欄資訊 + 右欄儀錶板）────────────── */
.home-event-strip {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding-block: clamp(40px, 5vw, 64px);
}
.home-event-strip__inner {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: clamp(32px, 4vw, 56px);
  align-items: start;
}

/* ── 左欄 ── */
.strip-left {
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 2.5vw, 28px);
}
.strip-left__eyebrow {
  font-size: 11px; font-weight: 700; letter-spacing: .18em;
  text-transform: uppercase; color: var(--color-accent);
}
.strip-left__title {
  font-size: clamp(26px, 3.2vw, 42px); font-weight: 800; color: #ffffff;
  line-height: 1.15; letter-spacing: .03em; margin: 0;
}
.strip-left__sub {
  font-size: clamp(14px, 1.3vw, 17px); font-weight: 600;
  color: rgba(255,255,255,.55); letter-spacing: .10em; margin: 0;
}

/* 活動方塊 */
.event-info-boxes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(10px, 1.5vw, 16px);
}
.event-info-box {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(176,141,87,.35);
  border-radius: var(--radius-md);
  padding: clamp(14px, 1.8vw, 20px);
  transition: background var(--transition);
}
.event-info-box:hover { background: rgba(255,255,255,.12); }
.event-info-box__tag {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .08em;
  color: var(--color-accent); background: rgba(176,141,87,.12);
  border: 1px solid rgba(176,141,87,.30); border-radius: 20px;
  padding: 2px 10px; margin-bottom: 10px;
}
.event-info-box__date {
  font-size: clamp(14px, 1.5vw, 17px); font-weight: 800; color: #fff;
  line-height: 1.1; font-variant-numeric: tabular-nums; margin-bottom: 4px;
}
.event-info-box__time { font-size: 12px; font-weight: 600; color: rgba(255,255,255,.65); margin-bottom: 6px; }
.event-info-box__place { font-size: clamp(12px, 1.1vw, 14px); color: rgba(255,255,255,.65); line-height: 1.5; white-space: nowrap; }

/* 倒數計時器（左欄，左對齊） */
.home-countdown { }
.home-countdown__label {
  font-size: 11px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--color-accent); margin-bottom: 14px;
}
.home-countdown__timer {
  display: flex; align-items: center;
  gap: clamp(6px, 1.2vw, 14px);
}
.home-cd-unit { text-align: center; }
.home-cd-num {
  display: block;
  font-size: clamp(52px, 7vw, 88px); font-weight: 800; color: #fff;
  line-height: 1; font-variant-numeric: tabular-nums; min-width: 2ch;
}
.home-cd-lbl {
  font-size: 12px; color: rgba(255,255,255,.40);
  margin-top: 8px; letter-spacing: .1em; text-transform: uppercase;
}
.home-cd-sep {
  font-size: clamp(36px, 5vw, 64px); font-weight: 700; color: var(--color-accent);
  line-height: 1; padding-bottom: 24px; flex-shrink: 0;
}
.home-countdown__sub {
  margin-top: 14px; font-size: 11px; font-weight: 600; letter-spacing: .18em;
  color: rgba(255,255,255,.28); text-transform: uppercase;
}

/* ── 右欄 ── */
.strip-right {
  display: flex; flex-direction: column; gap: 0;
  border-left: 1px solid rgba(255,255,255,.10);
  padding-left: clamp(24px, 3vw, 40px);
}

/* 統計儀錶板 */
.strip-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  margin-bottom: 28px;
}
.strip-stat {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(16px, 2vw, 28px) 14px;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.strip-stat:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.strip-stat__num {
  font-size: clamp(32px, 3.5vw, 52px); font-weight: 800;
  color: var(--color-primary); line-height: 1; font-variant-numeric: tabular-nums;
}
.strip-stat:last-child .strip-stat__num { color: var(--color-secondary); }
.strip-stat__lbl {
  font-size: 12px; color: var(--color-text-muted);
  margin-top: 8px; letter-spacing: .04em; font-weight: 500;
}

/* 社群連結 */
.strip-social {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 20px; margin-bottom: 20px;
}
.strip-social__label {
  font-size: 11px; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--color-accent); margin-bottom: 10px;
}
.strip-social__links { display: flex; flex-direction: column; gap: 8px; }
.strip-social-link {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; color: rgba(255,255,255,.80);
  text-decoration: none; padding: 8px 13px; border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,.10); background: rgba(255,255,255,.05);
  transition: all var(--transition);
}
.strip-social-link:hover { color: #fff; transform: translateX(2px); }
.strip-social-link__icon { font-size: 15px; flex-shrink: 0; }
.strip-social-link--fb { background: rgba(24,119,242,.12); border-color: rgba(24,119,242,.25); }
.strip-social-link--fb:hover { background: rgba(24,119,242,.25); border-color: rgba(24,119,242,.45); }
.strip-social-link--dc { background: rgba(88,101,242,.12); border-color: rgba(88,101,242,.25); }
.strip-social-link--dc:hover { background: rgba(88,101,242,.25); border-color: rgba(88,101,242,.45); }

/* 校友報到 CTA */
.strip-checkin {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  text-align: center;
  max-width: 480px;
  margin-inline: auto;
}
.strip-checkin__desc {
  font-size: 13px; color: var(--color-text-muted); line-height: 1.65; margin-bottom: 16px;
}
.strip-checkin__btn { display: inline-block; text-align: center; }

/* RWD for strip */
@media (max-width: 600px) {
  .strip-stats { grid-template-columns: 1fr 1fr; }
  .event-info-boxes { gap: 8px; }
  .event-info-box { padding: 12px; }
  .event-info-box__date { font-size: 13px; }
  .strip-social { display: flex; flex-direction: column; }
}

/* ── Countdown ──────────────────────────────────────────────── */
.countdown-section {
  background: var(--color-primary);
  padding-block: 48px;
}
.countdown-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
.countdown-label {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.countdown-timer {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 24px);
}
.countdown-unit {
  text-align: center;
  min-width: 80px;
}
.countdown-unit__num {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  color: #fff;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.countdown-unit__label {
  font-size: 12px;
  color: rgba(255,255,255,.55);
  margin-top: 6px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.countdown-sep {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 22px;
}
.countdown-event {
  font-size: 16px;
  color: rgba(255,255,255,.7);
}
.countdown-event strong { color: var(--color-accent); }

/* ── News Card ──────────────────────────────────────────────── */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}
.news-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card__img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: linear-gradient(135deg, #e8e2d8 0%, #d4c9b8 100%);
}
.news-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.news-card:hover .news-card__img img { transform: scale(1.04); }
.news-card__img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  background: linear-gradient(135deg, #e8e2d8 0%, #d4c9b8 100%);
}
.news-card__body {
  padding: 20px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.news-card__date {
  font-size: 12px;
  color: var(--color-text-muted);
}
.news-card__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}
.news-card__summary {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 16px;
}
.news-card__link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}
.news-card__link:hover { gap: 8px; }

/* ── Timeline ───────────────────────────────────────────────── */
.timeline { position: relative; }
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--color-border) 5%, var(--color-border) 95%, transparent);
  transform: translateX(-50%);
}
.timeline-item {
  display: grid;
  grid-template-columns: 1fr 48px 1fr;
  gap: 0;
  margin-bottom: 48px;
  align-items: start;
}
.timeline-item:nth-child(odd) .timeline-item__content { grid-column: 1; text-align: right; padding-right: 40px; }
.timeline-item:nth-child(odd) .timeline-item__dot     { grid-column: 2; }
.timeline-item:nth-child(odd) .timeline-item__spacer  { grid-column: 3; }
.timeline-item:nth-child(even) .timeline-item__spacer { grid-column: 1; }
.timeline-item:nth-child(even) .timeline-item__dot    { grid-column: 2; }
.timeline-item:nth-child(even) .timeline-item__content { grid-column: 3; text-align: left; padding-left: 40px; }
.timeline-item__dot {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 6px;
}
.timeline-item__dot-inner {
  width: 16px;
  height: 16px;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--color-accent);
  flex-shrink: 0;
}
.timeline-item--highlight .timeline-item__dot-inner {
  width: 20px;
  height: 20px;
  background: var(--color-secondary);
  box-shadow: 0 0 0 3px var(--color-secondary);
}
.timeline-item__content { padding-top: 2px; }
.timeline-item__date {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: .04em;
  margin-bottom: 4px;
}
.timeline-item__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.timeline-item__desc { font-size: 14px; color: var(--color-text-muted); line-height: 1.65; }
.timeline-item__spacer { min-height: 1px; }

/* Timeline simple (homepage) */
.timeline-simple { display: flex; flex-direction: column; gap: 0; }
.timeline-simple-item {
  display: flex;
  gap: 20px;
  padding-bottom: 28px;
  position: relative;
}
.timeline-simple-item::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 16px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.timeline-simple-item:last-child::before { display: none; }
.timeline-simple__dot {
  width: 16px;
  height: 16px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 4px;
  box-shadow: 0 0 0 3px rgba(176,141,87,.25);
}
.timeline-simple__body {}
.timeline-simple__date { font-size: 12px; font-weight: 600; color: var(--color-accent); margin-bottom: 2px; }
.timeline-simple__title { font-size: 16px; font-weight: 600; color: var(--color-primary); margin-bottom: 4px; }
.timeline-simple__desc { font-size: 14px; color: var(--color-text-muted); }

/* ── Photo Card / Gallery ───────────────────────────────────── */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.photo-grid--3 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.photo-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  background: #e0d9cf;
}
.photo-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.photo-card:hover img { transform: scale(1.06); }
.photo-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,28,52,.7) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}
.photo-card:hover .photo-card__overlay { opacity: 1; }
.photo-card__info {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 12px 14px;
  color: #fff;
  transform: translateY(4px);
  transition: transform var(--transition);
}
.photo-card:hover .photo-card__info { transform: translateY(0); }
.photo-card__title { font-size: 14px; font-weight: 600; }
.photo-card__cat { font-size: 12px; opacity: .75; margin-top: 2px; }
.photo-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  background: linear-gradient(135deg, #e8e0d4 0%, #d5c9b5 100%);
  transition: background .3s ease;
}
.photo-card:hover .photo-placeholder { background: linear-gradient(135deg, #ddd4c4 0%, #c8baa2 100%); }

/* ── Highlight Cards ────────────────────────────────────────── */
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.highlight-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}
.highlight-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.highlight-card__icon {
  font-size: 40px;
  margin-bottom: 16px;
  display: block;
}
.highlight-card__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}
.highlight-card__desc { font-size: 14px; color: var(--color-text-muted); line-height: 1.6; }

/* ── Find Classmates ────────────────────────────────────────── */
.find-form-wrap {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: clamp(28px, 4vw, 48px);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  max-width: 640px;
  margin-inline: auto;
}
.form-grid { display: grid; gap: 20px; }
.form-grid--2 { grid-template-columns: 1fr 1fr; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}
.form-field label span { color: var(--color-secondary); }
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(31,58,95,.1);
}
.form-control.error { border-color: var(--color-secondary); }
.form-control--error { border-color: var(--color-secondary) !important; box-shadow: 0 0 0 3px rgba(122,46,58,.10) !important; }
.form-field__error {
  display: none;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-secondary);
  margin-top: -2px;
}
.form-control--select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.form-hint { font-size: 12px; color: var(--color-text-muted); }
.form-error-msg { font-size: 12px; color: var(--color-secondary); }

/* Status boxes */
.status-box {
  border-radius: var(--radius-lg);
  padding: 24px;
  display: none;
  gap: 16px;
  align-items: flex-start;
}
.status-box.show { display: flex; }
.status-box--success { background: #EBF5F0; border: 1.5px solid #5BAD85; }
.status-box--error   { background: #FDF0F0; border: 1.5px solid var(--color-secondary); }
.status-box__icon { font-size: 28px; flex-shrink: 0; margin-top: 2px; }
.status-box__title { font-size: 16px; font-weight: 700; color: var(--color-text); margin-bottom: 4px; }
.status-box__desc  { font-size: 14px; color: var(--color-text-muted); }

/* ── FAQ Accordion ──────────────────────────────────────────── */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--color-primary); }
.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition);
}
.faq-item.open .faq-item__question { color: var(--color-primary); }
.faq-item__icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(31,58,95,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
  transition: transform var(--transition), background var(--transition);
  color: var(--color-primary);
}
.faq-item.open .faq-item__icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: #fff;
}
.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}
.faq-item.open .faq-item__answer { max-height: 400px; }
.faq-item__answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ── CTA Banner ─────────────────────────────────────────────── */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, #2a4a6e 100%);
  border-radius: var(--radius-xl);
  padding: clamp(40px, 6vw, 72px);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 80% 50%, rgba(176,141,87,.15) 0%, transparent 60%);
}
.cta-banner__content { position: relative; z-index: 1; }
.cta-banner__title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.cta-banner__sub {
  font-size: 17px;
  color: rgba(255,255,255,.75);
  margin-bottom: 32px;
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: 32px;
}
.cta-section { padding-block: clamp(48px, 8vw, 100px); }

/* ── Shop ───────────────────────────────────────────────────── */
.shop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.product-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.product-card__img {
  aspect-ratio: 1/1;
  background: linear-gradient(135deg, #e8e2d8 0%, #d4c9b8 100%);
  overflow: hidden;
}
.product-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.product-card:hover .product-card__img img { transform: scale(1.04); }
.product-card__img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
}
.product-card__body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-card__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 6px;
}
.product-card__desc { font-size: 14px; color: var(--color-text-muted); margin-bottom: 12px; flex: 1; }
.product-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.product-card__price {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-secondary);
}
.product-card__price span { font-size: 14px; font-weight: 400; color: var(--color-text-muted); }

/* ── Tabs ───────────────────────────────────────────────────── */
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 28px; }
.tab-btn {
  padding: 8px 18px;
  border-radius: 24px;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.tab-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.tab-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Pagination ─────────────────────────────────────────────── */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 48px;
}
.page-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.page-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.page-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.page-btn--wide { width: auto; padding-inline: 14px; }

/* ── Lightbox ───────────────────────────────────────────────── */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.9);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}
.lightbox-overlay.open { display: flex; }
.lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}
.lightbox-inner img { max-width: 90vw; max-height: 80vh; border-radius: var(--radius-md); object-fit: contain; }
.lightbox-close {
  position: absolute;
  top: -40px; right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 32px;
  line-height: 1;
  cursor: pointer;
}
.lightbox-caption {
  text-align: center;
  color: rgba(255,255,255,.75);
  margin-top: 12px;
  font-size: 14px;
}

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb__sep { opacity: .5; }

/* ── Quantity control ───────────────────────────────────────── */
.qty-control {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  width: fit-content;
}
.qty-btn {
  width: 40px;
  height: 40px;
  background: var(--color-bg);
  border: none;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  transition: background var(--transition);
}
.qty-btn:hover { background: rgba(31,58,95,.1); }
.qty-num {
  width: 48px;
  height: 40px;
  text-align: center;
  border: none;
  border-left: 1.5px solid var(--color-border);
  border-right: 1.5px solid var(--color-border);
  font-size: 16px;
  font-weight: 600;
  background: var(--color-surface);
  color: var(--color-text);
}

/* ── Misc utilities ─────────────────────────────────────────── */
.text-center { text-align: center; }
.text-muted  { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.mt-auto { margin-top: auto; }
.mt-4  { margin-top: 16px; }
.mt-8  { margin-top: 32px; }
.mt-12 { margin-top: 48px; }
.mb-4  { margin-bottom: 16px; }
.mb-8  { margin-bottom: 32px; }
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-block: 32px;
}
.center-btn { display: flex; justify-content: center; margin-top: 36px; }

/* ── RWD ────────────────────────────────────────────────────── */
@media (max-width: 1023px) {
  .header-nav { display: none; }
  .header-actions .btn { display: none; }
  .header-menu-btn { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .timeline::before { left: 20px; }
  .timeline-item {
    grid-template-columns: 40px 1fr !important;
    grid-template-rows: auto;
  }
  .timeline-item:nth-child(odd) .timeline-item__content,
  .timeline-item:nth-child(even) .timeline-item__content {
    grid-column: 2;
    text-align: left;
    padding-left: 24px;
    padding-right: 0;
  }
  .timeline-item:nth-child(odd) .timeline-item__dot,
  .timeline-item:nth-child(even) .timeline-item__dot {
    grid-column: 1;
    grid-row: 1;
    justify-content: center;
  }
  .timeline-item:nth-child(odd) .timeline-item__spacer,
  .timeline-item:nth-child(even) .timeline-item__spacer { display: none; }
  /* Hero: tablet — shrink image, keep side by side */
  .hero { grid-template-columns: 55fr 45fr; min-height: auto; }
  .hero__banner-panel { min-height: 560px; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .hero__cd-num { font-size: 28px; }
}
@media (max-width: 767px) {
  /* Hero: mobile — stack vertically */
  .hero {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    min-height: auto;
  }
  .hero__banner-panel {
    height: clamp(240px, 56vw, 380px);
    min-height: unset;
  }
  /* 手機版：下方漸深，與 Dashboard 融合 */
  .hero__banner-panel .hero__banner-overlay {
    background: linear-gradient(
      to bottom,
      rgba(10,25,41,0.04) 0%,
      rgba(10,25,41,0.08) 60%,
      rgba(10,25,41,0.55) 100%
    );
  }
  .hero__dashboard {
    padding: 28px 20px 32px;
  }
  .hero__stats { grid-template-columns: repeat(4, 1fr); gap: 6px; }
  .hero__stat { padding: 10px 4px; }
  .hero__stat-num { font-size: 18px; }
  .hero__stat-label { font-size: 9px; }
  .hero__title { font-size: clamp(22px, 6vw, 30px); }
  .hero__cd-num { font-size: 26px; }
  .hero__cta { flex-direction: row; }
  .hero__cta .btn { flex: 1; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .news-grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .highlight-grid { grid-template-columns: 1fr 1fr; }
  .form-grid--2 { grid-template-columns: 1fr; }
  .shop-grid { grid-template-columns: 1fr 1fr; }
  .countdown-unit { min-width: 56px; }
  .countdown-unit__num { font-size: 28px; }
  .tabs { gap: 6px; }
}
@media (max-width: 480px) {
  .photo-grid { grid-template-columns: 1fr; }
  .highlight-grid { grid-template-columns: 1fr; }
  .shop-grid { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .hero__cta { flex-direction: column; }
  .hero__cta .btn { width: 100%; }
}