:root{--bg:#f6f9ff;--panel:#ffffff;--ink:#172554;--muted:#475569;--line:#dbeafe;--primary:#1e40af;--secondary:#16a34a;--accent:#eff6ff;--shadow:0 20px 44px rgba(30,64,175,.14);--radius-lg:28px;--container:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:radial-gradient(circle at top right,rgba(22,163,74,.10),transparent 24%),linear-gradient(180deg,#fff 0%,var(--bg) 100%);line-height:1.72}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}.container{width:min(var(--container),calc(100% - 32px));margin:0 auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header-inner,.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}.brand{display:flex;align-items:center;gap:12px;font-weight:800}.brand-badge{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#2563eb);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow)}.nav-links{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:.95rem}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 22px;border-radius:999px;font-weight:700}.button.primary{background:var(--primary);color:#fff;box-shadow:var(--shadow)}.button.ghost{background:#fff;border:1px solid var(--line)}.hero{padding:54px 0 28px}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px}.hero-card,.panel,.score-card,.content-card,.sidebar-box,.cta-box,.mini-card,.article-main{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow)}.hero-copy,.article-header,.article-body,.sidebar-box{padding:26px}.kicker{color:var(--secondary);font-weight:800;letter-spacing:.12em;text-transform:uppercase;font-size:.82rem}.hero h1,.article-header h1{font-size:clamp(2.1rem,4vw,4rem);line-height:1.08;margin:12px 0 14px;font-weight:900}.lede{font-size:1.06rem;color:#334155}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}.stats-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}.mini-card{padding:18px}.mini-card strong{display:block;font-size:1.45rem;color:var(--primary)}.hero-media img,.article-hero,.card-thumb{width:100%;aspect-ratio:1200/630;object-fit:cover;border-radius:var(--radius-lg)}.section{padding:26px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}.section-head h2{margin:6px 0 0;font-size:clamp(1.55rem,2vw,2.25rem)}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card-grid.two{grid-template-columns:repeat(2,1fr)}.card-body{padding:22px}.card-meta{font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;color:var(--secondary);font-weight:800}.score{display:inline-flex;margin-top:14px;padding:8px 12px;border-radius:999px;background:rgba(30,64,175,.1);color:var(--primary);font-weight:800}.split{display:grid;grid-template-columns:1fr 1fr;gap:20px}.article-shell{padding:36px 0 60px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.sidebar-sticky{position:sticky;top:92px}.article-body h2{margin-top:28px;font-size:1.55rem}.inline-visual{margin:20px 0;border-radius:22px;border:1px solid var(--line);box-shadow:var(--shadow)}.cta-box{padding:24px;margin:30px 0;background:linear-gradient(135deg,rgba(30,64,175,.08),rgba(22,163,74,.10))}.faq-block{padding-top:8px}details{border-top:1px solid var(--line);padding:14px 0}summary{cursor:pointer;font-weight:800}.footer{padding:28px 0 42px;color:var(--muted)}.footer-links{display:flex;gap:16px;flex-wrap:wrap}@media (max-width:960px){.hero-grid,.article-layout,.split,.card-grid,.card-grid.two{grid-template-columns:1fr}.nav-links{display:none}.stats-strip{grid-template-columns:1fr}}

/* === a11y-override v1 === */
/* 批量抬 CTA tap target 到 WCAG AA 44px，小字 12→14px */
.btn, a.btn, button.btn, .nav-cta, .cta, a.cta, button.cta,
[class*="btn-"], [class*="cta-"] {
  min-height: 44px;
  padding-top: 12px;
  padding-bottom: 12px;
  font-size: 15px;
  line-height: 1.3;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-text, .btn-text:hover { min-height: auto; padding-top: 6px; padding-bottom: 6px; }
.rank-body p, .rank-score small, small, .footer small, footer small,
.disclaimer, .copyright, .muted-small {
  font-size: 14px;
  line-height: 1.6;
}
@media (max-width: 600px) {
  .btn, .nav-cta, .cta, [class*="btn-"] {
    min-height: 48px;
    font-size: 16px;
    width: auto;
  }
}
/* === end a11y-override === */

/* === a11y-override v2 === */
/* R2 mobile 深修：image overlay 吃色 / 灰字對比 / 圖片變形 */

/* 1. image overlay 文字防吃色：凡是疊在圖片上嘅文字都加 text-shadow 同漸層罩 */
.hero, .hero-card, .card-image, .guide-card, [class*="card-"] {
  position: relative;
}
.hero h1, .hero h2, .hero p,
.card-image + *, .guide-card h3, .guide-card p,
[class*="overlay"], [class*="-on-image"] {
  text-shadow: 0 1px 3px rgba(0,0,0,0.6), 0 0 8px rgba(0,0,0,0.4);
}
.hero::after, .guide-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.45) 100%);
  pointer-events: none;
  border-radius: inherit;
}
.hero > *, .guide-card > * { position: relative; z-index: 1; }

/* 2. 灰字對比：所有淺灰字統一抬到 #555 (7:1+) */
.muted, .text-muted, .sub, .secondary-text,
[class*="muted"], [class*="-small"], small, .footer small, footer small,
.meta, .card-meta, .label-small, .caption {
  color: #555555 !important;
}
/* --text-muted token 亦強制更新 */
:root {
  --text-muted: #555555 !important;
  --text-secondary: #444444 !important;
}

/* 3. 圖片寬高比鎖定：避免手機下被縱向拉伸 */
.hero img, .card img, .card-image img, .guide-card img,
[class*="-image"] img, article img, .thumb img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  width: 100%;
  height: auto;
  display: block;
}
.logo img, .icon img, .avatar img { aspect-ratio: auto; }

/* 4. 手機專屬加強 */
@media (max-width: 600px) {
  .hero h1, .hero h2 { text-shadow: 0 2px 4px rgba(0,0,0,0.75); }
  img { max-width: 100%; height: auto; }
}
/* === end a11y-override v2 === */

/* === hero-upgrade v1 === */
/* Hero 視覺升級：漸層遮罩 + 微光 + glow CTA */

.hero {
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: -50%;
  width: 200%;
  height: 100%;
  background: radial-gradient(
    ellipse at 30% 20%,
    rgba(242, 181, 68, 0.06) 0%,
    transparent 50%
  );
  pointer-events: none;
  animation: hero-shimmer 12s ease-in-out infinite;
}
@keyframes hero-shimmer {
  0%, 100% { transform: translateX(-5%); opacity: 0.6; }
  50% { transform: translateX(5%); opacity: 1; }
}

.hero h1 {
  background: linear-gradient(135deg, var(--primary, #17324D) 0%, #2a5a8a 50%, var(--primary, #17324D) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: hero-title-shine 6s ease-in-out infinite;
}
@keyframes hero-title-shine {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero .button,
.hero .btn,
.hero .btn-primary,
.hero a[class*="button"] {
  position: relative;
  box-shadow: 0 0 20px rgba(242, 181, 68, 0.3), 0 4px 12px rgba(0,0,0,0.2);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.hero .button:hover,
.hero .btn:hover,
.hero .btn-primary:hover,
.hero a[class*="button"]:hover {
  box-shadow: 0 0 30px rgba(242, 181, 68, 0.5), 0 6px 20px rgba(0,0,0,0.3);
  transform: translateY(-2px);
}

.hero-image,
.hero img:not(.brand-mark):not([class*="icon"]) {
  transition: transform 0.6s ease;
}
.hero:hover .hero-image,
.hero:hover img:not(.brand-mark):not([class*="icon"]) {
  transform: scale(1.03);
}

.hero-section { position: relative; overflow: hidden; }
.hero-section::before {
  content: "";
  position: absolute;
  top: 0; left: -50%; width: 200%; height: 100%;
  background: radial-gradient(ellipse at 30% 20%, rgba(242,181,68,0.06) 0%, transparent 50%);
  pointer-events: none;
  animation: hero-shimmer 12s ease-in-out infinite;
}

@media (max-width: 600px) {
  .hero { padding: 40px 0 36px; }
  .hero h1 { font-size: 28px; line-height: 1.3; }
  .hero .lede { font-size: 15px; }
}
/* === end hero-upgrade === */