/* ======================================
   World Report - Style (Light Theme)
   ====================================== */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --color-primary: #1a3a5c;
  --color-accent: #4a6cf7;
  --color-accent-dark: #3a56d4;
  --color-accent-light: #eef2ff;
  --color-orange: #e8614d;
  --color-purple: #7c5cbf;
  --color-cyan: #0ea5e9;
  --color-green: #22c55e;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-bg: #ffffff;
  --color-bg-gray: #f8fafc;
  --color-bg-hero: #f0f4ff;
  --color-border: #e2e8f0;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;
  --max-width: 1100px;
  --header-height: 64px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-jp);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo { height: 28px; width: auto; }

.header__nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.header__brand {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

a.header__brand:hover { opacity: 0.7; }

.header__nav-link {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  transition: color 0.3s;
}

.header__nav-link:hover { color: var(--color-accent); }

/* ---------- Hero (Light) ---------- */
.hero {
  margin-top: var(--header-height);
  padding: 100px 24px 80px;
  background: linear-gradient(135deg, var(--color-bg-hero) 0%, #e0ecff 50%, #f0f4ff 100%);
  color: var(--color-text);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(74,108,247,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(14,165,233,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero__inner { max-width: var(--max-width); margin: 0 auto; position: relative; z-index: 1; }

.hero__label {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.hero__title {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.hero__description {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

/* ---------- Features ---------- */
.features { padding: 80px 24px; background: var(--color-bg); }
.features__inner { max-width: var(--max-width); margin: 0 auto; }

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.features__card {
  background: var(--color-bg-gray);
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: transform 0.3s, box-shadow 0.3s;
}

.features__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.features__icon {
  width: 36px; height: 36px;
  margin: 0 auto 16px;
  color: var(--color-accent);
}

.features__icon svg { width: 100%; height: 100%; }
.features__card-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: var(--color-primary); }
.features__card-text { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.8; }

/* ---------- Articles Section ---------- */
.articles { padding: 80px 24px; background: var(--color-bg-gray); }
.articles__inner { max-width: var(--max-width); margin: 0 auto; }

.articles__label {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.articles__heading { font-size: 1.6rem; font-weight: 700; margin-bottom: 32px; color: var(--color-primary); }

.articles__filter { display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap; }

.articles__filter-btn {
  font-family: var(--font-jp);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all 0.3s;
}

.articles__filter-btn:hover,
.articles__filter-btn.is-active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.articles__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ---------- Article Card ---------- */
.article-card {
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: #fff;
  transition: transform 0.3s, box-shadow 0.3s;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.article-card__thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg-gray);
}

.article-card__thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

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

.article-card__date {
  position: absolute;
  top: 12px; left: 12px;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(26,58,92,0.8);
  color: #fff;
  padding: 3px 10px;
  border-radius: 4px;
}

.article-card__body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-card__tags { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }

.article-card__tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 12px;
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.article-card__tag--free {
  background: #dcfce7;
  color: #16a34a;
}

.article-card__title {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.article-card__excerpt {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.article-card__price {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
}

.article-card__price--free {
  color: var(--color-green);
}

/* ---------- Article Detail ---------- */
.article-detail {
  margin-top: var(--header-height);
  padding: 60px 24px 80px;
  background: var(--color-bg);
}

.article-detail__inner { max-width: 760px; margin: 0 auto; }

.article-detail__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.article-detail__date {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-light);
}

.article-detail__tags { display: flex; gap: 6px; }

.article-detail__title {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.article-detail__subtitle {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.article-detail__hero-img {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 40px;
}

.article-detail__hero-img img { width: 100%; }

/* Free banner */
.article-detail__free-banner {
  background: linear-gradient(135deg, #ecfdf5, #d1fae5);
  border: 1px solid #a7f3d0;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 40px;
}

.article-detail__free-banner p {
  font-size: 0.9rem;
  color: #065f46;
  margin: 0;
}

/* Article content */
.article-detail__content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
  color: var(--color-primary);
}

.article-detail__content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.article-detail__content p {
  font-size: 0.95rem;
  line-height: 2;
  margin-bottom: 20px;
  color: var(--color-text);
}

.article-detail__content img { border-radius: 8px; margin: 24px 0; }

.article-detail__content ul,
.article-detail__content ol { padding-left: 1.5em; margin-bottom: 20px; }

.article-detail__content li {
  font-size: 0.95rem;
  line-height: 2;
  margin-bottom: 4px;
}

/* Back link */
.article-detail__back {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.article-detail__back-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-accent);
  transition: opacity 0.3s;
}

.article-detail__back-link:hover { opacity: 0.7; }

/* Upsell */
.article-detail__upsell {
  margin-top: 60px;
  padding: 32px;
  background: var(--color-bg-gray);
  border-radius: 12px;
}

.article-detail__upsell h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-primary);
}

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

.article-detail__upsell-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  transition: border-color 0.3s, transform 0.3s;
}

.article-detail__upsell-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.article-detail__upsell-country {
  font-size: 0.9rem;
  font-weight: 600;
}

.article-detail__upsell-price {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent);
}

/* ---------- Paywall ---------- */
.paywall {
  position: relative;
  margin-top: -40px;
}

.paywall__blur {
  height: 120px;
  background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,1));
  pointer-events: none;
}

.paywall__content {
  text-align: center;
  padding: 40px 32px;
  background: var(--color-bg-gray);
  border-radius: 16px;
  border: 2px solid var(--color-border);
}

.paywall__icon {
  width: 48px; height: 48px;
  margin: 0 auto 16px;
  color: var(--color-text-light);
}

.paywall__icon svg { width: 100%; height: 100%; }

.paywall__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.paywall__description {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.paywall__toc {
  text-align: left;
  max-width: 480px;
  margin: 0 auto 28px;
  padding: 20px 24px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.paywall__toc h4 {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.paywall__toc ul {
  list-style: none;
  padding: 0;
}

.paywall__toc li {
  font-size: 0.8rem;
  color: var(--color-text-light);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}

.paywall__toc li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.paywall__price-box {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
}

.paywall__price {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.paywall__format {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.paywall__btn {
  display: inline-block;
  padding: 16px 48px;
  background: var(--color-accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  transition: background 0.3s, transform 0.3s;
}

.paywall__btn:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}

.paywall__note {
  font-size: 0.75rem;
  color: #94a3b8;
  margin-top: 12px;
}

/* ---------- CTA (Light) ---------- */
.cta {
  padding: 80px 24px;
  background: linear-gradient(135deg, var(--color-bg-hero) 0%, #dbeafe 100%);
  color: var(--color-text);
  text-align: center;
}

.cta__inner { max-width: var(--max-width); margin: 0 auto; }

.cta__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.cta__description {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 32px;
}

.cta__btn {
  display: inline-block;
  padding: 14px 40px;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  transition: background 0.3s, transform 0.3s;
}

.cta__btn:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}

/* ---------- Footer ---------- */
.footer {
  padding: 48px 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  background: var(--color-bg);
}

.footer__inner { max-width: var(--max-width); margin: 0 auto; }

.footer__top {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer__logo { height: 24px; width: auto; }

.footer__brand {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
}

.footer__link {
  font-size: 0.8rem;
  color: var(--color-text-light);
  transition: color 0.3s;
}

.footer__link:hover { color: var(--color-accent); }

.footer__copy {
  font-family: var(--font-en);
  font-size: 0.75rem;
  color: #94a3b8;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .hero { padding: 70px 20px 60px; }
  .hero__title { font-size: 1.5rem; }
  .hero__description { font-size: 0.85rem; }
  .hero__description br { display: none; }

  .features__grid { grid-template-columns: 1fr; gap: 16px; }
  .features__card { padding: 24px 20px; }

  .articles__grid { grid-template-columns: 1fr; gap: 16px; }
  .articles__heading { font-size: 1.3rem; }

  .article-detail__title { font-size: 1.3rem; }
  .article-detail__content h2 { font-size: 1.1rem; }

  .article-detail__upsell-grid { grid-template-columns: 1fr; }

  .paywall__content { padding: 32px 20px; }
  .paywall__price { font-size: 1.6rem; }
  .paywall__btn { padding: 14px 32px; font-size: 0.9rem; }

  .cta__title { font-size: 1.2rem; }
  .cta__description { font-size: 0.85rem; }
  .cta__description br { display: none; }

  .footer__links { flex-direction: column; gap: 12px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .articles__grid { grid-template-columns: repeat(2, 1fr); }
}