/* ======================================
   The Peak Guide — Editorial Theme
   Palette: Forest Green + Sky Blue
   Fonts: Noto Serif SC (display) + Noto Sans SC (body)
   ====================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700&family=Noto+Sans+SC:wght@300;400;500;600&display=swap');

:root {
  --color-primary: #1a3a2a;
  --color-primary-dark: #0f2418;
  --color-accent: #2d8a5e;
  --color-accent-light: #3da870;
  --color-sky: #4a90b8;
  --color-sky-light: #6bb3d4;
  --color-gold: #b8860b;
  --color-gold-light: #d4a82a;
  --color-bg: #f5f7f4;
  --color-bg-alt: #e8ede6;
  --color-bg-dark: #1a3a2a;
  --color-text: #1a3a2a;
  --color-text-light: #3d5c4a;
  --color-text-muted: #6a8575;
  --color-border: #c8d4c8;
  --color-white: #ffffff;
  --font-display: 'Noto Serif SC', 'Songti SC', serif;
  --font-body: 'Noto Sans SC', 'Heiti SC', sans-serif;
  --font-english-display: 'Noto Serif SC', serif;
  --font-english-body: 'Noto Sans SC', sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --radius: 4px;
  --shadow-sm: 0 1px 3px rgba(26, 58, 42, 0.08);
  --shadow-md: 0 4px 16px rgba(26, 58, 42, 0.12);
  --shadow-lg: 0 8px 32px rgba(26, 58, 42, 0.16);
  --transition: 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--color-accent); color: var(--color-white); }

/* ======================================
   NAVIGATION
   ====================================== */

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(26, 58, 42, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0 var(--space-lg);
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-brand {
  display: flex; align-items: center; gap: 0.75rem;
}

.nav-brand-icon {
  width: 36px; height: 36px;
}

.nav-brand-text {
  display: flex; flex-direction: column; line-height: 1.1;
}

.nav-brand-name {
  font-family: var(--font-display);
  font-size: 1.1rem; font-weight: 700;
  color: var(--color-gold-light);
  letter-spacing: 0.02em;
}

.nav-brand-sub {
  font-size: 0.65rem; color: rgba(212, 168, 42, 0.6);
  letter-spacing: 0.08em; text-transform: uppercase;
}

.nav-links {
  display: flex; align-items: center; gap: var(--space-md);
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem; color: rgba(255,255,255,0.75);
  text-decoration: none; letter-spacing: 0.03em;
  transition: color var(--transition);
  padding: 4px 0; border-bottom: 1px solid transparent;
}

.nav-links a:hover { color: var(--color-gold-light); }

.nav-right { display: flex; align-items: center; gap: var(--space-sm); }

.lang-toggle {
  background: transparent; border: 1px solid rgba(184,134,11,0.4);
  color: var(--color-gold-light); font-family: var(--font-body);
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em;
  padding: 5px 12px; border-radius: 2px; cursor: pointer;
  transition: all var(--transition);
}

.lang-toggle:hover {
  background: rgba(184,134,11,0.15); border-color: var(--color-gold);
}

.nav-cta {
  background: var(--color-accent); color: white;
  font-family: var(--font-body); font-size: 0.8rem; font-weight: 600;
  padding: 8px 20px; border-radius: 2px; text-decoration: none;
  letter-spacing: 0.04em; transition: background var(--transition);
}

.nav-cta:hover { background: var(--color-accent-light); }

.mobile-menu-btn {
  display: none; background: none; border: none; cursor: pointer;
  padding: 8px; flex-direction: column; gap: 5px;
}

.mobile-menu-btn span {
  display: block; width: 22px; height: 2px;
  background: var(--color-gold-light); transition: all var(--transition);
}

/* ======================================
   HERO
   ====================================== */

.hero {
  min-height: 100vh; display: flex; align-items: center;
  background: var(--color-primary-dark);
  position: relative; overflow: hidden;
  padding: 80px var(--space-lg) var(--space-xl);
}

.hero-bg-pattern {
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-gradient {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(26,58,42,0.95) 0%, rgba(15,36,24,0.85) 50%, rgba(26,58,42,0.9) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative; z-index: 1;
  max-width: 800px;
}

.hero-location {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,255,255,0.6); margin-bottom: var(--space-md);
}

.hero-location svg { color: var(--color-sky-light); }

.hero-heading {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700; line-height: 1.15;
  color: var(--color-white); margin-bottom: var(--space-md);
  display: flex; flex-wrap: wrap; align-items: baseline;
  gap: 0.3em;
}

.hero-heading span:first-child {
  color: rgba(255,255,255,0.85);
  font-weight: 400;
}

.hero-heading-accent {
  color: var(--color-gold-light) !important;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.15rem; color: rgba(255,255,255,0.7);
  max-width: 600px; line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.hero-meta {
  display: flex; gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.hero-meta-item {
  font-size: 0.8rem; color: rgba(255,255,255,0.5);
  letter-spacing: 0.05em;
}

.hero-meta-item::before {
  content: '';
  display: inline-block; width: 4px; height: 4px;
  background: var(--color-accent); border-radius: 50%;
  margin-right: var(--space-sm); vertical-align: middle;
}

.hero-meta-item:first-child::before { display: none; }

.hero-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--color-accent); color: white;
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
  padding: 14px 28px; border-radius: 2px; text-decoration: none;
  letter-spacing: 0.03em; transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(45, 138, 94, 0.3);
}

.hero-cta:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(45, 138, 94, 0.4);
}

.hero-cta svg { transition: transform var(--transition); }
.hero-cta:hover svg { transform: translateX(4px); }

.hero-scroll {
  position: absolute; bottom: var(--space-lg);
  left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(255,255,255,0.4); font-size: 0.7rem; letter-spacing: 0.1em;
  text-decoration: none; text-transform: uppercase;
  transition: color var(--transition);
}

.hero-scroll:hover { color: var(--color-gold-light); }
.hero-scroll svg { animation: bounce 2s infinite; }

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(6px); }
  60% { transform: translateY(3px); }
}

/* ======================================
   STATS BAR
   ====================================== */

.stats-bar {
  background: var(--color-primary);
  padding: var(--space-lg) var(--space-lg);
}

.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md); max-width: 1000px; margin: 0 auto;
}

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

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem; font-weight: 700;
  color: var(--color-gold-light); line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.75rem; color: rgba(255,255,255,0.6);
  letter-spacing: 0.08em; text-transform: uppercase;
}

/* ======================================
   INTRODUCTION
   ====================================== */

.intro {
  padding: var(--space-2xl) var(--space-lg);
}

.intro-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl); max-width: 1100px; margin: 0 auto;
  align-items: center;
}

.intro-label {
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent); margin-bottom: var(--space-sm);
}

.intro-heading {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700; color: var(--color-primary);
  margin-bottom: var(--space-md); line-height: 1.3;
}

.intro-text p {
  font-size: 1rem; color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.intro-cta {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--color-accent); font-size: 0.9rem; font-weight: 600;
  text-decoration: none; letter-spacing: 0.03em;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 2px; transition: all var(--transition);
}

.intro-cta:hover { color: var(--color-accent-light); border-color: var(--color-accent-light); }

.intro-image-wrap {
  position: relative; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-lg);
}

.intro-img {
  width: 100%; height: 360px; object-fit: cover;
  display: block; transition: transform 0.6s ease;
}

.intro-image-wrap:hover .intro-img { transform: scale(1.03); }

/* ======================================
   ARTICLES
   ====================================== */

.articles-section {
  background: var(--color-bg-alt);
  padding: var(--space-2xl) var(--space-lg);
}

.section-container { max-width: 860px; margin: 0 auto; }

.section-header {
  text-align: center; margin-bottom: var(--space-xl);
}

.section-label {
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent); margin-bottom: var(--space-sm);
}

.section-heading {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 700; color: var(--color-primary);
}

.article-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden; margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.article-card-image {
  width: 100%; height: 260px; object-fit: cover;
  display: block;
}

.article-card-body { padding: var(--space-lg); }

.article-card-meta {
  font-size: 0.75rem; color: var(--color-text-muted);
  letter-spacing: 0.05em; margin-bottom: var(--space-sm);
}

.article-card-title {
  font-family: var(--font-display);
  font-size: 1.35rem; font-weight: 600;
  color: var(--color-primary); margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.article-card-excerpt {
  font-size: 0.95rem; color: var(--color-text-light);
  line-height: 1.7; margin-bottom: var(--space-md);
}

.article-expand {
  background: transparent; border: 1px solid var(--color-border);
  color: var(--color-accent); font-family: var(--font-body);
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.05em;
  padding: 8px 16px; border-radius: 2px; cursor: pointer;
  transition: all var(--transition);
}

.article-expand:hover {
  background: var(--color-accent); color: white;
  border-color: var(--color-accent);
}

.article-extra {
  max-height: 0; overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.article-extra.open { max-height: 800px; padding-top: var(--space-md); }

.article-extra p {
  font-size: 0.95rem; color: var(--color-text-light);
  line-height: 1.8; margin-bottom: var(--space-md);
}

/* ======================================
   TIPS SECTION
   ====================================== */

.tips-section {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-white);
}

.tips-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg); max-width: 1000px; margin: 0 auto;
}

.tip-card {
  background: var(--color-bg);
  border-radius: var(--radius); padding: var(--space-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.tip-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.tip-icon {
  width: 40px; height: 40px; background: var(--color-accent);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-md);
}

.tip-icon svg { width: 20px; height: 20px; color: white; }

.tip-title {
  font-family: var(--font-display);
  font-size: 1.1rem; font-weight: 600;
  color: var(--color-primary); margin-bottom: var(--space-sm);
}

.tip-desc {
  font-size: 0.9rem; color: var(--color-text-muted);
  line-height: 1.6;
}

/* ======================================
   SEASONAL SECTION
   ====================================== */

.seasonal-section {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-alt);
}

.seasonal-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md); max-width: 1100px; margin: 0 auto;
}

.season-card {
  background: var(--color-white);
  border-radius: var(--radius); padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.season-name {
  font-family: var(--font-display);
  font-size: 1.2rem; font-weight: 700;
  color: var(--color-primary); margin-bottom: 0.25rem;
}

.season-period {
  font-size: 0.8rem; color: var(--color-accent);
  letter-spacing: 0.05em; margin-bottom: var(--space-md);
}

.season-tips {
  font-size: 0.9rem; color: var(--color-text-muted);
  line-height: 1.6;
}

/* ======================================
   NEWSLETTER
   ====================================== */

.newsletter-section {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-primary);
}

.newsletter-content {
  max-width: 600px; margin: 0 auto;
  text-align: center;
}

.newsletter-label {
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent); margin-bottom: var(--space-sm);
}

.newsletter-heading {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 700;
  color: var(--color-white); margin-bottom: var(--space-sm);
}

.newsletter-subtitle {
  font-size: 1rem; color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-lg);
}

.newsletter-form {
  display: grid; gap: var(--space-md); max-width: 400px; margin: 0 auto;
}

.newsletter-form input[type="text"],
.newsletter-form input[type="email"] {
  width: 100%; padding: 12px 16px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  color: var(--color-white); font-family: var(--font-body);
  font-size: 0.95rem; border-radius: 2px;
  transition: border-color var(--transition);
}

.newsletter-form input::placeholder { color: rgba(255,255,255,0.5); }
.newsletter-form input:focus { outline: none; border-color: var(--color-accent); }

.newsletter-consent {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.8rem; color: rgba(255,255,255,0.6);
  text-align: left;
}

.newsletter-consent input { margin-top: 3px; accent-color: var(--color-accent); }

.newsletter-form button {
  background: var(--color-accent); color: white;
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
  padding: 12px 24px; border: none; border-radius: 2px;
  cursor: pointer; transition: background var(--transition);
}

.newsletter-form button:hover { background: var(--color-accent-light); }

.newsletter-success, .newsletter-error {
  padding: var(--space-md);
  border-radius: var(--radius); font-size: 0.9rem;
  display: none;
}

.newsletter-success {
  background: rgba(45, 138, 94, 0.2);
  color: var(--color-accent-light); border: 1px solid var(--color-accent);
}

.newsletter-error {
  background: rgba(200, 50, 50, 0.2);
  color: #e57373; border: 1px solid #c9362b;
}

/* ======================================
   FAQ SECTION
   ====================================== */

.faq-section {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-white);
}

.faq-content { max-width: 700px; margin: 0 auto; }

.faq-label {
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent); margin-bottom: var(--space-sm);
}

.faq-heading {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 700;
  color: var(--color-primary); margin-bottom: var(--space-xl);
  text-align: center;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
}

.faq-question {
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; list-style: none;
  font-family: var(--font-display);
  font-size: 1.05rem; font-weight: 600;
  color: var(--color-primary);
}

.faq-question::-webkit-details-marker { display: none; }

.faq-icon {
  width: 24px; height: 24px; flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 0.95rem; color: var(--color-text-light);
  line-height: 1.7;
}

.faq-answer.open { max-height: 300px; padding-top: var(--space-md); }

/* ======================================
   FOOTER
   ====================================== */

.footer {
  background: var(--color-primary-dark);
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
}

.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl); max-width: 1100px; margin: 0 auto var(--space-xl);
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 1.3rem; font-weight: 700;
  color: var(--color-gold-light); margin-bottom: var(--space-sm);
}

.footer-brand-desc {
  font-size: 0.9rem; color: rgba(255,255,255,0.6);
  line-height: 1.6; margin-bottom: var(--space-md);
}

.footer-col-title {
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-gold-light); margin-bottom: var(--space-md);
}

.footer-links { list-style: none; }

.footer-links li { margin-bottom: 0.5rem; }

.footer-links a {
  font-size: 0.9rem; color: rgba(255,255,255,0.6);
  text-decoration: none; transition: color var(--transition);
}

.footer-links a:hover { color: var(--color-white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-lg);
  max-width: 1100px; margin: 0 auto;
}

.footer-disclaimer {
  font-size: 0.8rem; color: rgba(255,255,255,0.4);
  line-height: 1.6; margin-bottom: var(--space-md);
}

.footer-copyright {
  font-size: 0.8rem; color: rgba(255,255,255,0.4);
  text-align: center;
}

/* ======================================
   ABOUT PAGE
   ====================================== */

.page-hero {
  background: var(--color-primary-dark);
  padding: 120px var(--space-lg) var(--space-xl);
  text-align: center;
}

.page-hero-label {
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--color-accent); margin-bottom: var(--space-sm);
}

.page-hero-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700; color: var(--color-white);
  margin-bottom: var(--space-md);
}

.page-hero-subtitle {
  font-size: 1.1rem; color: rgba(255,255,255,0.7);
  max-width: 600px; margin: 0 auto;
}

.about-section {
  padding: var(--space-2xl) var(--space-lg);
}

.about-content {
  max-width: 700px; margin: 0 auto;
}

.about-content p {
  font-size: 1rem; color: var(--color-text-light);
  line-height: 1.8; margin-bottom: var(--space-md);
}

.about-section-heading {
  font-family: var(--font-display);
  font-size: 1.5rem; font-weight: 700;
  color: var(--color-primary); margin: var(--space-xl) 0 var(--space-md);
}

/* ======================================
   FADE UP ANIMATIONS
   ====================================== */

.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }

/* ======================================
   RESPONSIVE
   ====================================== */

@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .tips-grid { grid-template-columns: repeat(2, 1fr); }
  .seasonal-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: flex; }

  .hero-heading {
    flex-direction: column; gap: 0;
  }

  .intro-grid {
    grid-template-columns: 1fr;
  }

  .intro-image-wrap { order: -1; }

  .tips-grid { grid-template-columns: 1fr; }
  .seasonal-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-number { font-size: 1.8rem; }
  .hero-meta { flex-direction: column; gap: var(--space-xs); }
  .hero-meta-item::before { display: none; }
}