@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@400;700;900&family=Noto+Sans+TC:wght@300;400;500;700&display=swap');

/* ══ 錨點修正：固定導覽列遮擋補償 ══ */
[id] { scroll-margin-top: 72px; }

/* ══ 變數 ══ */
:root {
  --pink:        #c9a040;
  --pink-light:  #f2d06b;
  --pink-dark:   #9a7520;
  --cyan:        #e02020;
  --cyan-dark:   #a01010;
  --yellow:      #ffe600;
  --bg:          #060910;
  --bg2:         #0a0d1e;
  --bg3:         #0f1228;
  --bg4:         #171c38;
  --border:      rgba(201,160,64,0.22);
  --border-hi:   rgba(201,160,64,0.6);
  --text:        #e8e6d0;
  --text-dim:    #b0a880;
  --text-muted:  #7a7050;
  --white:       #e8e6d0;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }
body {
  background: var(--bg);
  background-image:
    linear-gradient(rgba(201,160,64,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,160,64,.035) 1px, transparent 1px);
  background-size: 44px 44px;
  color: var(--text);
  font-family: 'Noto Sans TC', sans-serif;
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration:none; color:inherit; }
img { max-width:100%; display:block; }

::-webkit-scrollbar { width:5px; }
::-webkit-scrollbar-track { background:var(--bg2); }
::-webkit-scrollbar-thumb { background:var(--pink-dark); border-radius:3px; }

/* ══ 導覽列 ══ */
.topnav {
  position:fixed; top:0; left:0; right:0; z-index:900;
  background: rgba(6,9,16,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--pink);
  box-shadow: 0 2px 24px rgba(201,160,64,0.25);
  display:flex; align-items:center;
  height:56px; padding:0 24px;
}

.topnav-logo {
  font-family: 'Noto Serif TC', serif;
  font-size:15px; font-weight:700;
  color:var(--pink); letter-spacing:2px;
  white-space:nowrap; margin-right:24px;
  text-shadow: 0 0 14px rgba(201,160,64,0.6), 0 0 28px rgba(201,160,64,0.2);
  text-decoration:none;
}

.topnav-sep {
  width:1px; height:24px;
  background:var(--border); margin-right:24px; flex-shrink:0;
}

.topnav-links {
  display:flex; align-items:center; gap:2px; flex:1;
}

.topnav-link {
  padding:5px 11px;
  font-size:0.8rem; letter-spacing:1px;
  color:var(--text-dim);
  border-radius:3px;
  transition:all 0.2s;
  border:1px solid transparent;
  white-space:nowrap;
}

.topnav-link:hover, .topnav-link.active {
  color:var(--pink-light);
  border-color:var(--border);
  background:rgba(201,160,64,0.08);
}

.topnav-right { margin-left:auto; flex-shrink:0; }

.topnav-line-btn {
  padding:5px 14px;
  border:1px solid rgba(224,32,32,0.4);
  color:var(--cyan);
  font-size:0.78rem; letter-spacing:1px;
  border-radius:3px;
  transition:all 0.2s;
}
.topnav-line-btn:hover {
  background:rgba(224,32,32,0.1);
  box-shadow:0 0 10px rgba(224,32,32,0.25);
}

.hamburger {
  display:none; flex-direction:column; gap:5px;
  cursor:pointer; padding:4px; margin-left:16px;
}
.hamburger span {
  display:block; width:22px; height:2px;
  background:var(--pink); border-radius:2px;
}

/* ══ 浮動側欄 ══ */
.float-sidebar {
  position:fixed; right:0; top:50%;
  transform:translateY(-50%);
  z-index:800;
  display:flex; flex-direction:column; gap:4px;
}

.float-btn {
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  width:62px; height:68px;
  background:#0d0b1c;
  border:1px solid var(--border);
  border-right:none;
  border-left:3px solid var(--border);
  color:var(--text-dim);
  font-size:0.7rem; letter-spacing:1px;
  cursor:pointer; font-family:inherit;
  text-align:center;
  transition:all 0.22s;
  border-radius:8px 0 0 8px;
  white-space:nowrap;
  gap:5px;
  box-shadow:-2px 0 8px rgba(0,0,0,0.5);
}
.float-btn .fb-icon {
  font-size:1.45rem; line-height:1;
  display:block;
}
.float-btn .fb-icon img {
  width:26px; height:26px; object-fit:contain; display:block;
}
.float-btn .fb-label {
  font-size:0.65rem; letter-spacing:0.5px; line-height:1;
}

.float-btn:hover {
  width:70px;
  background:#1a0d20;
  color:#fff;
}

/* 贊助 — 粉色 */
.float-btn.sponsor {
  color:var(--pink);
  border-left-color:var(--pink);
  box-shadow:-2px 0 10px rgba(201,160,64,0.25);
}
.float-btn.sponsor:hover {
  background:#200010;
  color:var(--pink-light);
  border-left-color:var(--pink-light);
  box-shadow:-4px 0 16px rgba(201,160,64,0.45);
}

/* 禮包 — 黃色 */
.float-btn.gift {
  color:var(--yellow);
  border-left-color:var(--yellow);
  box-shadow:-2px 0 10px rgba(255,230,0,0.18);
}
.float-btn.gift:hover {
  background:#1a1600;
  color:#fff176;
  border-left-color:#fff176;
  box-shadow:-4px 0 16px rgba(255,230,0,0.35);
}

/* LINE — 綠色 */
.float-btn.line-btn {
  color:#00c300;
  border-left-color:#00c300;
  box-shadow:-2px 0 10px rgba(0,195,0,0.2);
}
.float-btn.line-btn:hover {
  background:#001a00;
  color:#69f069;
  border-left-color:#69f069;
  box-shadow:-4px 0 16px rgba(0,195,0,0.4);
}

/* ══ Modal ══ */
.float-modal {
  display:none; position:fixed;
  inset:0; z-index:1000;
  background:rgba(0,0,0,0.75);
  align-items:center; justify-content:center;
  backdrop-filter:blur(4px);
}
.float-modal.open { display:flex; }

.float-modal-box {
  background:var(--bg3);
  border:1px solid var(--border-hi);
  border-radius:4px;
  padding:28px 28px 24px;
  max-width:420px; width:90%;
  position:relative;
  box-shadow:0 20px 60px rgba(0,0,0,0.8), 0 0 40px rgba(201,160,64,0.1);
}

.modal-close {
  position:absolute; top:14px; right:16px;
  color:var(--text-dim); cursor:pointer;
  font-size:18px; line-height:1;
  transition:color 0.2s;
}
.modal-close:hover { color:var(--pink); }

.modal-title {
  font-family:'Noto Serif TC',serif;
  font-size:1.1rem; font-weight:700;
  color:var(--pink); letter-spacing:2px;
  margin-bottom:16px;
  padding-bottom:12px;
  border-bottom:1px solid var(--border);
}

.modal-body {
  font-size:0.85rem; line-height:1.8;
  color:var(--text);
}
.modal-body p { margin-bottom:6px; }
.modal-body strong { color:var(--pink-light); }
.modal-body hr { border:none; border-top:1px solid var(--border); margin:12px 0; }

.modal-btn {
  display:block; margin-top:20px;
  padding:10px 20px; text-align:center;
  border:1px solid var(--pink);
  color:var(--pink); font-size:0.85rem;
  letter-spacing:2px; border-radius:3px;
  transition:all 0.2s; cursor:pointer;
  font-family:inherit; background:transparent;
}
.modal-btn:hover {
  background:var(--pink); color:#fff;
  box-shadow:0 0 20px rgba(201,160,64,0.4);
}

/* ══ Hero ══ */
.hero {
  position:relative; height:580px;
  overflow:hidden; margin-top:56px;
  display:flex; align-items:center; justify-content:center;
}

.hero-bg {
  position:absolute; inset:-40px;
  background-size:cover; background-position:center;
  will-change:transform;
  background-image: linear-gradient(180deg,
    rgba(6,9,16,0.3) 0%,
    rgba(6,9,16,0.65) 60%,
    rgba(6,9,16,1) 100%),
    url('images/banner_main.png');
}

.hero-placeholder-bg {
  background-image: linear-gradient(135deg, #1a0820 0%, #060910 50%, #0a0618 100%) !important;
}

.hero-content {
  position:relative; z-index:2;
  text-align:center; padding:0 24px;
}

.hero-badge {
  display:inline-block;
  padding:4px 14px;
  border:1px solid rgba(201,160,64,0.4);
  color:var(--pink-light);
  font-size:0.7rem; letter-spacing:3px;
  margin-bottom:20px; border-radius:2px;
  background:rgba(201,160,64,0.08);
}

.hero-title {
  font-family:'Noto Serif TC',serif;
  font-weight:900; line-height:1.1;
  margin-bottom:12px;
}

.hero-title span {
  display:block; font-size:3.2rem;
  color:var(--pink);
  text-shadow:0 0 40px rgba(201,160,64,0.7),
              0 0 80px rgba(201,160,64,0.3),
              0 0 120px rgba(201,160,64,0.1);
  letter-spacing:8px;
}

.hero-tagline {
  font-size:0.9rem; letter-spacing:3px;
  color:var(--text-dim); margin-bottom:24px;
}

.hero-divider {
  width:60px; height:2px;
  background:linear-gradient(90deg, #9a7520, #f2d06b, #9a7520);
  margin:0 auto 24px;
  border-radius:1px;
}

.hero-stats {
  display:inline-flex; align-items:center; gap:0;
  border:1px solid rgba(201,160,64,0.3);
  border-radius:4px; overflow:hidden;
  background:rgba(6,9,16,0.8);
  backdrop-filter:blur(6px);
}

.hero-stat {
  padding:12px 24px; text-align:center;
}

.hero-stat-val {
  font-family:'Noto Serif TC',serif;
  font-size:1.4rem; font-weight:700;
  color:var(--pink-light); line-height:1;
  margin-bottom:4px;
}

.hero-stat-label {
  font-size:0.7rem; letter-spacing:2px;
  color:var(--text-dim);
}

.hero-stat-sep {
  width:1px; height:40px;
  background:rgba(201,160,64,0.2); flex-shrink:0;
}

/* ══ 區塊通用 ══ */
.section { padding:64px 0; }
.section-alt { background:var(--bg2); }

.container {
  max-width:1200px; margin:0 auto; padding:0 24px;
}

.section-header {
  text-align:center; margin-bottom:44px;
  background:rgba(6,9,16,0.72);
  border:1px solid rgba(201,160,64,0.2);
  border-radius:10px;
  padding:22px 28px;
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
}

.section-eyebrow {
  font-size:0.7rem; letter-spacing:5px;
  color:var(--text-muted); margin-bottom:10px;
}

.section-title {
  font-family:'Noto Serif TC',serif;
  font-size:1.6rem; font-weight:700;
  letter-spacing:4px;
  background: linear-gradient(90deg, #c9a040, #f2d06b, #c9a040);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  filter: none;
}

.section-line {
  width:48px; height:2px;
  background:linear-gradient(90deg, #9a7520, #f2d06b, #9a7520);
  margin:16px auto 0;
  border-radius:1px;
}

/* ══ 圖片版塊 ══ */
.section-image {
  width:100%;
  border:1px solid var(--border);
  border-radius:4px; overflow:hidden;
  margin-bottom:36px;
  box-shadow:0 4px 30px rgba(0,0,0,0.5);
}
.section-image img { width:100%; display:block; }

.img-placeholder {
  width:100%; height:220px;
  background:var(--bg3);
  display:flex; align-items:center; justify-content:center;
  color:var(--text-muted); font-size:0.82rem; letter-spacing:2px;
  border:1px dashed rgba(201,160,64,0.15);
}

/* ══ 公告卡片 ══ */
.ann-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(260px,1fr));
  gap:16px; margin-bottom:32px;
}

.ann-card {
  background:var(--bg3);
  border:1px solid var(--border);
  border-top:3px solid var(--pink);
  border-radius:4px; padding:18px 20px;
  transition:border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  display:block;
}
.ann-card:hover {
  border-color:var(--border-hi);
  transform:translateY(-3px);
  box-shadow:0 8px 24px rgba(201,160,64,0.15);
}

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

.ann-tag {
  font-size:0.68rem; letter-spacing:1px;
  padding:2px 8px; border-radius:2px;
}
.tag-event { background:rgba(201,160,64,0.15); color:var(--pink); border:1px solid rgba(201,160,64,0.3); }
.tag-new   { background:rgba(224,32,32,0.1);   color:var(--cyan); border:1px solid rgba(224,32,32,0.3); }
.tag-sys   { background:rgba(255,230,0,0.08);   color:var(--yellow); border:1px solid rgba(255,230,0,0.25); }

.ann-date { font-size:0.75rem; color:var(--text-muted); }

.ann-card-title {
  font-size:0.9rem; color:var(--white);
  margin-bottom:8px; font-weight:500;
  line-height:1.5;
}

.ann-card-excerpt {
  font-size:0.78rem; color:var(--text-dim); line-height:1.6;
  margin-bottom:10px;
}

.ann-card-more { font-size:0.75rem; color:var(--pink); }

/* ══ 職業卡片 ══ */
.class-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(180px,1fr));
  gap:16px; margin-bottom:28px;
}

.class-card {
  background:var(--bg3);
  border:1px solid var(--border);
  border-top:3px solid var(--cyan);
  border-radius:4px; padding:24px 18px;
  text-align:center;
  transition:border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.class-card:hover {
  border-color:var(--border-hi);
  transform:translateY(-4px);
  box-shadow:0 8px 24px rgba(224,32,32,0.15);
}

.class-icon { font-size:2rem; margin-bottom:12px; }

.class-name {
  font-family:'Noto Serif TC',serif;
  font-size:1rem; color:var(--cyan);
  letter-spacing:2px; margin-bottom:8px;
}

.class-desc {
  font-size:0.78rem; color:var(--text-dim); line-height:1.6;
}

/* ══ 伺服器資訊 ══ */
.server-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(300px,1fr));
  gap:20px;
}

.server-card {
  background:var(--bg3);
  border:1px solid var(--border);
  border-top:3px solid var(--pink);
  border-radius:4px; padding:24px;
  box-shadow:0 4px 20px rgba(201,160,64,0.08);
}

.server-card-name {
  font-family:'Noto Serif TC',serif;
  font-size:1.2rem; color:var(--pink);
  letter-spacing:3px; margin-bottom:4px;
}

.server-card-sub {
  font-size:0.7rem; letter-spacing:3px;
  color:var(--text-muted); margin-bottom:20px;
}

.server-info-row {
  display:flex; justify-content:space-between;
  padding:8px 0;
  border-bottom:1px solid rgba(255,255,255,0.05);
  font-size:0.82rem;
}

.server-info-key { color:var(--text-dim); }
.server-info-val { color:var(--white); }
.server-info-val.highlight { color:var(--pink-light); font-weight:700; }

/* ══ 遊戲特色錨點列 ══ */
.feature-nav {
  display:flex; flex-wrap:wrap; gap:6px;
  justify-content:center;
  padding:16px 24px;
  background:var(--bg2);
  border-bottom:1px solid var(--border);
  position:sticky; top:56px; z-index:100;
}

.feature-nav a {
  padding:5px 12px;
  border:1px solid var(--border);
  color:var(--text-dim);
  font-size:0.75rem; border-radius:3px;
  letter-spacing:1px; transition:all 0.2s;
}
.feature-nav a:hover {
  border-color:var(--pink);
  color:var(--pink);
  background:rgba(201,160,64,0.07);
}

.feature-section {
  padding:60px 0;
  border-bottom:1px solid rgba(201,160,64,0.06);
}
.feature-section:last-child { border-bottom:none; }

/* ══ 表格 ══ */
table { width:100%; border-collapse:collapse; margin-bottom:28px; }
th {
  background:var(--bg3);
  color:var(--pink); padding:11px 16px;
  text-align:left; font-size:0.8rem; letter-spacing:2px;
  border-bottom:2px solid var(--pink);
}
td {
  background:var(--bg2);
  padding:10px 16px; font-size:0.82rem;
  border-bottom:1px solid rgba(255,255,255,0.04);
}
tr:hover td { background:var(--bg3); }

/* ══ 按鈕 ══ */
/* ── 返回遊戲特色（頁頂靜態連結） ── */
.sticky-back {
  margin-bottom:24px;
}
.sticky-back a {
  display:inline-flex;align-items:center;gap:7px;
  background:#0a0d1e;
  border:1px solid rgba(201,160,64,0.5);
  border-radius:6px;
  padding:7px 16px;
  color:var(--pink);font-size:.8rem;font-weight:600;letter-spacing:1px;
  text-shadow:0 1px 4px rgba(0,0,0,0.9);
  box-shadow:0 2px 10px rgba(0,0,0,0.6);
  transition:background .2s,border-color .2s;
}
.sticky-back a:hover {
  background:#12173a;
  border-color:var(--pink);
}

/* ── 返回遊戲特色浮動按鈕 ── */
#backToFeature {
  position:fixed;bottom:96px;right:20px;z-index:999;
  width:58px;height:36px;border-radius:18px;
  background:rgba(201,160,64,0.2);
  border:1.5px solid rgba(201,160,64,0.7);
  color:var(--pink);font-size:.7rem;font-weight:700;letter-spacing:.5px;
  cursor:pointer;transition:opacity .3s,transform .2s,background .2s;
  opacity:0;pointer-events:none;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 2px 12px rgba(201,160,64,0.2);
  white-space:nowrap;
}
#backToFeature.visible { opacity:1;pointer-events:auto; }
#backToFeature:hover {
  background:rgba(201,160,64,0.35);
  transform:translateY(-3px);
  box-shadow:0 4px 16px rgba(201,160,64,0.35);
}

/* ── 回到頂部按鈕 ── */
#backToTop {
  position:fixed;bottom:28px;right:20px;z-index:999;
  width:58px;height:58px;border-radius:50%;
  background:rgba(201,160,64,0.2);
  border:2px solid rgba(201,160,64,0.85);
  color:var(--pink);font-size:1.8rem;font-weight:700;
  cursor:pointer;transition:opacity .3s,transform .2s,background .2s;
  opacity:0;pointer-events:none;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 2px 16px rgba(201,160,64,0.25);
}
#backToTop.visible { opacity:1;pointer-events:auto; }
#backToTop:hover {
  background:rgba(201,160,64,0.35);
  transform:translateY(-4px);
  box-shadow:0 6px 24px rgba(201,160,64,0.4);
}

.btn-outline {
  display:inline-block; padding:9px 24px;
  border:1px solid rgba(201,160,64,0.4);
  background:var(--bg2);
  color:var(--text-dim); font-size:0.8rem; letter-spacing:2px;
  border-radius:3px; transition:all 0.2s;
}
.btn-outline:hover {
  border-color:var(--pink); color:var(--pink);
  background:rgba(201,160,64,0.08);
}

.btn-primary {
  display:inline-block; padding:12px 32px;
  background:var(--pink); color:#fff;
  font-size:0.9rem; letter-spacing:3px;
  border-radius:3px; transition:all 0.2s;
  font-family:inherit; font-weight:700;
  border:none; cursor:pointer;
}
.btn-primary:hover {
  background:var(--pink-light);
  box-shadow:0 0 24px rgba(201,160,64,0.5);
  transform:translateY(-2px);
}

.btn-blue {
  display:inline-block; padding:12px 32px;
  border:1px solid var(--cyan); color:var(--cyan);
  font-size:0.9rem; letter-spacing:3px;
  border-radius:3px; transition:all 0.2s;
  font-family:inherit; background:transparent; cursor:pointer;
}
.btn-blue:hover {
  background:var(--cyan); color:var(--bg);
  box-shadow:0 0 20px rgba(224,32,32,0.35);
}

.text-center { text-align:center; }

/* ══ Footer ══ */
footer {
  background:var(--bg2);
  border-top:2px solid var(--pink);
  box-shadow:0 -2px 20px rgba(201,160,64,0.12);
  padding:48px 24px 24px;
}

.footer-inner {
  max-width:1200px; margin:0 auto;
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(160px,1fr));
  gap:32px; margin-bottom:40px;
}

.footer-col-title {
  font-family:'Noto Serif TC',serif;
  font-size:0.85rem; color:var(--pink);
  letter-spacing:2px; margin-bottom:14px;
}

.footer-links { list-style:none; }
.footer-links li { margin-bottom:8px; }
.footer-links a {
  font-size:0.78rem; color:var(--text-muted);
  transition:color 0.2s; letter-spacing:1px;
}
.footer-links a:hover { color:var(--pink); }

.footer-copy {
  max-width:1200px; margin:0 auto;
  padding-top:24px; border-top:1px solid var(--border);
  font-size:0.73rem; color:var(--text-muted);
  letter-spacing:1px; line-height:2;
  text-align:center;
}

/* ══ 導覽下拉選單 ══ */
.topnav-dropdown {
  position: relative;
}

.topnav-dropdown > .topnav-link {
  cursor: pointer;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: rgba(6,9,16,0.98);
  border: 1px solid var(--border);
  border-top:2px solid var(--pink);
  border-radius: 4px;
  min-width: 160px;
  z-index: 999;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.6), 0 4px 16px rgba(201,160,64,0.1);
}

.topnav-dropdown.open .dropdown-menu {
  display: block;
}

.dropdown-menu a {
  display: block;
  padding: 9px 16px;
  font-size: 0.78rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  transition: all 0.15s;
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.dropdown-menu a:last-child { border-bottom: none; }

.dropdown-menu a:hover {
  background: rgba(201,160,64,0.08);
  color: var(--pink-light);
  padding-left: 20px;
}

/* ══ 遊戲特色卡片格線 ══ */
.feature-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.feature-card {
  display: block;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-top: 3px solid var(--pink);
  border-radius:4px;
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hi);
  box-shadow: 0 12px 32px rgba(201,160,64,0.2);
}

.feature-card-img {
  width: 100%;
  overflow: hidden;
  background: var(--bg3);
}

.feature-card-img img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: unset;
  transition: transform 0.4s;
}

.feature-card:hover .feature-card-img img {
  transform: scale(1.05);
}

.feature-card-body {
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.feature-card-num {
  font-family: 'Noto Serif TC', serif;
  font-size: 1.4rem;
  font-weight: 900;
  color: rgba(201,160,64,0.2);
  line-height: 1;
  min-width: 32px;
}

.feature-card-title {
  flex: 1;
  font-size: 0.9rem;
  color: var(--white);
  letter-spacing: 1px;
}

.feature-card-arrow {
  font-size: 0.75rem;
  color: var(--pink);
  white-space: nowrap;
}

/* ══ 特色內頁 ══ */
.feature-detail {
  max-width: 960px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}

.feature-detail-img {
  width: 100%;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 40px;
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.feature-detail-img img { width: 100%; display: block; }

.feature-detail-content {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--pink);
  border-radius: 4px;
  padding: 32px;
}

.feature-detail-content h3 {
  font-family: 'Noto Serif TC', serif;
  font-size: 1.1rem;
  color: var(--pink);
  letter-spacing: 3px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.feature-detail-content p {
  font-size: 0.88rem;
  line-height: 1.9;
  color: var(--text);
  margin-bottom: 12px;
}

.feature-detail-content ul {
  padding-left: 0;
  list-style: none;
}

.feature-detail-content ul li {
  font-size: 0.85rem;
  color: var(--text);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  letter-spacing: 0.5px;
}

.feature-detail-content ul li::before {
  content: '▸ ';
  color: var(--pink);
}

.feature-nav-btns {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
  gap: 12px;
}

/* ══ RWD ══ */
@media (max-width:960px) {
  .topnav-links {
    display:none; position:absolute;
    top:56px; left:0; right:0;
    background:rgba(6,9,16,0.98);
    flex-direction:column; padding:12px 16px;
    border-bottom:2px solid var(--pink);
  }
  .topnav-links.open { display:flex; }
  .hamburger { display:flex; }
  .hero { height:440px; }
  .hero-title span { font-size:2.2rem; }
  .float-sidebar { display:none; }
}

@media (max-width:600px) {
  .hero-stats { flex-wrap:wrap; }
  .hero-stat-sep { display:none; }
  .footer-inner { grid-template-columns:1fr 1fr; }
}

/* ══ 視差背景修正：確保所有內容容器不透明 ══ */
.feature-card        { background:var(--bg2); }
.class-card          { background:var(--bg3); }
.ann-card            { background:var(--bg3); }
.page-tab-content,
.tab-content         { background:var(--bg);  }
.info-box,
.notice-box          { background:var(--bg2); }

/* ══ A: 浮動左側 TOC ══ */
.toc-panel {
  position:fixed; left:20px; top:50%;
  transform:translateY(-50%);
  z-index:700; width:148px;
  background:var(--bg2);
  border:1px solid var(--border);
  border-left:3px solid var(--pink);
  border-radius:4px;
  padding:14px 0;
  opacity:0; pointer-events:none;
  transition:opacity 0.3s;
  box-shadow:4px 0 20px rgba(201,160,64,0.1);
}
.toc-panel.visible { opacity:1; pointer-events:auto; }
.toc-title {
  font-size:0.6rem; letter-spacing:3px; text-transform:uppercase;
  color:var(--pink); padding:0 14px 10px;
  border-bottom:1px solid var(--border);
  margin-bottom:8px;
}
.toc-link {
  display:block;
  padding:7px 14px 7px 14px;
  font-size:0.73rem; letter-spacing:0.5px;
  color:var(--text-muted);
  transition:all 0.2s;
  border-left:2px solid transparent;
  cursor:pointer; line-height:1.4;
}
.toc-link:hover { color:var(--text); background:rgba(201,160,64,0.04); }
.toc-link.active {
  color:var(--pink);
  border-left-color:var(--pink);
  background:rgba(201,160,64,0.07);
}
@media (max-width:1280px) { .toc-panel { display:none; } }

/* ══ C: Tab 系統 ══ */
.tab-wrap { }
.tab-nav {
  display:flex; flex-wrap:wrap; gap:0;
  border-bottom:2px solid var(--border);
  margin-bottom:28px;
  position:sticky;
  top:56px;
  z-index:80;
  background:rgba(6,9,16,0.95);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.tab-indicator {
  position:absolute; bottom:-2px; height:2px;
  background:var(--pink);
  border-radius:2px;
  transition:left .22s cubic-bezier(.4,0,.2,1), width .22s cubic-bezier(.4,0,.2,1);
  pointer-events:none;
  box-shadow:0 0 8px rgba(201,160,64,.6);
}
.tab-btn {
  padding:9px 16px;
  font-size:0.78rem; letter-spacing:1px;
  color:var(--text-muted);
  background:rgba(6,9,16,0.75);
  border:none; border-bottom:2px solid transparent;
  margin-bottom:-2px;
  cursor:pointer; font-family:inherit;
  transition:all 0.2s; white-space:nowrap;
}
.tab-btn:hover { color:var(--text); background:rgba(6,9,16,0.9); }
.tab-btn.active {
  color:var(--pink);
  border-bottom-color:var(--pink);
  background:rgba(6,9,16,0.9);
}
.tab-panel { display:none; }
.tab-panel.active { display:block; }

/* ══ F: Accordion ══ */
.accordion {
  margin-bottom:8px;
  border:1px solid var(--border);
  border-radius:4px;
  overflow:hidden;
}
.accordion-hd {
  display:flex; align-items:center; justify-content:space-between;
  padding:13px 18px;
  background:var(--bg3);
  cursor:pointer;
  transition:background 0.2s;
  user-select:none;
}
.accordion-hd:hover { background:var(--bg4); }
.accordion-hd.open { border-bottom:1px solid var(--border); }
.accordion-label {
  font-size:0.88rem; font-weight:600;
  color:var(--text); letter-spacing:1px;
  display:flex; align-items:center; gap:8px;
}
.accordion-arrow {
  color:var(--pink); font-size:0.7rem;
  transition:transform 0.25s; flex-shrink:0;
}
.accordion-hd.open .accordion-arrow { transform:rotate(180deg); }
.accordion-bd {
  display:none;
  background:var(--bg2);
  padding:20px 18px;
}
.accordion-bd.open { display:block; }

/* ══ Left TOC Sidebar ══ */
.page-layout{display:block}
.left-toc{position:fixed;left:10px;top:300px;width:160px;z-index:50;background:var(--bg2);border-radius:10px;border:1px solid var(--border);padding:0;overflow:hidden;max-height:calc(100vh - 320px);overflow-y:auto}
.left-toc::-webkit-scrollbar{width:3px}.left-toc::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.left-toc-heading{font-size:.72em;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--text-muted);padding:12px 14px 10px;border-bottom:1px solid var(--border);background:var(--bg3)}
.left-toc-btn{display:block;padding:10px 14px;font-size:.82em;font-weight:700;letter-spacing:.3px;color:var(--text-muted);text-decoration:none;border-left:3px solid transparent;border-top:none;border-right:none;border-bottom:none;background:none;width:100%;text-align:left;cursor:pointer;transition:color .2s,border-left-color .2s,background .2s;font-family:inherit;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.left-toc-btn+.left-toc-btn{border-top:1px solid rgba(255,255,255,.04)}
.left-toc-btn:hover{color:var(--text);border-left-color:rgba(201,169,110,.4);background:rgba(255,255,255,.02)}
.left-toc-btn.active{color:var(--accent);border-left-color:var(--accent);background:rgba(201,169,110,.06)}
.page-main{display:block}
@media(max-width:900px){.left-toc{display:none}}