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

:root {
  --color-primary: #6b8f71;
  --color-primary-dark: #4d6b53;
  --color-text: #1c1c1c;
  --color-text-light: #666;
  --color-bg: #fff;
  --color-bg-alt: #f7f8f5;
  --color-bg-warm: #eef1ea;
  --color-border: #e2e6df;
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1100px;
  --radius: 12px;
  --shadow: 0 2px 16px rgba(0,0,0,0.05);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.09);
  --transition: 0.25s ease;
}

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

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

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 60px 0;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.section-sub {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 36px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary-dark);
}

.nav {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  z-index: 99;
}

.nav.open {
  display: flex;
}

.nav a {
  font-size: 1.1rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav a:hover {
  color: var(--color-primary);
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero */
.hero {
  padding: 60px 0 80px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-text);
}

.hero p {
  font-size: 1rem;
  color: var(--color-text-light);
  max-width: 520px;
  margin: 0 auto 28px;
}

.hero-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  min-width: 44px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.btn-sm {
  min-height: 38px;
  padding: 6px 18px;
  font-size: 0.85rem;
}

/* Categories */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.cat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 24px 12px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all var(--transition);
  text-align: center;
}

.cat-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.cat-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
}

.cat-icon svg {
  width: 100%;
  height: 100%;
}

.cat-card h3 {
  font-size: 0.9rem;
  font-weight: 600;
}

.cat-card span {
  font-size: 0.76rem;
  color: var(--color-text-light);
}

/* Top Picks */
.picks {
  background: var(--color-bg);
}

.pick-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.pick-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.pick-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.pick-img {
  width: 100%;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pick-img svg {
  width: 65%;
  height: 65%;
}

.pick-info {
  padding: 16px;
}

.pick-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-bg-warm);
  padding: 2px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
}

.pick-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.pick-info > p {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.pick-price {
  margin-bottom: 12px;
}

.pick-price span {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* Features */
.features {
  background: var(--color-bg-alt);
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

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

.feature-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto 12px;
  color: var(--color-primary);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-item h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

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

/* About */
.about-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.about-text p {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.about-text .btn {
  margin-top: 8px;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat {
  text-align: center;
  padding: 24px 12px;
  background: var(--color-bg-warm);
  border-radius: var(--radius);
}

.stat-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 4px;
}

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

/* Newsletter */
.newsletter {
  text-align: center;
  background: var(--color-primary);
  color: #fff;
}

.newsletter h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.newsletter p {
  font-size: 0.9rem;
  opacity: 0.9;
  margin-bottom: 24px;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 440px;
  margin: 0 auto;
}

.newsletter-form input {
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 8px;
  border: none;
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
}

.newsletter-form .btn {
  background: var(--color-text);
  border-color: var(--color-text);
  color: #fff;
}

.newsletter-form .btn:hover {
  opacity: 0.9;
}

/* FAQ */
.faq {
  background: var(--color-bg-alt);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.faq-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Article cards */
.articles {
  background: var(--color-bg);
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.article-card {
  display: block;
  padding: 24px 20px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all var(--transition);
}

.article-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.article-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-bg-warm);
  padding: 2px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
}

.article-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
}

.article-card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 10px;
}

.article-cta {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

/* Responsive Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Article table */
.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: 20px 0 28px;
}

.article-table thead {
  background: var(--color-bg-warm);
}

.article-table th {
  text-align: left;
  padding: 10px 12px;
  font-weight: 600;
  font-size: 0.8rem;
}

.article-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
}

.article-table tbody tr:hover {
  background: var(--color-bg-alt);
}

/* Active nav link */
.nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* Footer */
.footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-bottom: 36px;
}

.footer-col h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}

.footer-col p {
  font-size: 0.82rem;
  line-height: 1.6;
}

.footer-col a {
  display: block;
  font-size: 0.82rem;
  margin-bottom: 6px;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 16px;
  text-align: center;
  font-size: 0.78rem;
}

.footer-bottom a {
  opacity: 0.7;
  transition: opacity var(--transition);
}

.footer-bottom a:hover {
  opacity: 1;
}

/* Page Hero */
.page-hero {
  background: var(--color-bg-alt);
  padding: 60px 0;
  text-align: center;
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* Article Meta */
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--color-text-light);
}

.article-meta-dot {
  width: 3px;
  height: 3px;
  background: var(--color-border);
  border-radius: 50%;
}

/* Card Meta */
.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.76rem;
  color: #999;
  margin-bottom: 8px;
}

.page-content {
  padding: 60px 0;
}

.page-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  margin-top: 36px;
}

.page-content h2:first-child {
  margin-top: 0;
}

.page-content p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: -12px;
}

.contact-form input,
.contact-form textarea {
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--color-primary);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-info-item h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

/* To Top Button */
.to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(107,143,113,0.3);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: all var(--transition);
  z-index: 50;
}

.to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.to-top:hover {
  background: var(--color-primary-dark);
}

.to-top svg {
  width: 20px;
  height: 20px;
}

/* Toast */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text);
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  z-index: 200;
  opacity: 0;
  transition: opacity var(--transition);
}

.toast.show {
  opacity: 1;
}

/* Tablet */
@media (min-width: 640px) {
  .hero h1 { font-size: 2.8rem; }
  .cat-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .pick-grid { grid-template-columns: repeat(2, 1fr); }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .section-title { font-size: 2rem; }
  .newsletter-form { flex-direction: row; }
  .newsletter-form input { flex: 1; }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .about-inner { grid-template-columns: 1fr 1fr; align-items: center; }
}

/* Desktop */
@media (min-width: 900px) {
  .section { padding: 80px 0; }
  .nav { display: flex; position: static; flex-direction: row; background: none; gap: 32px; }
  .nav a { font-size: 0.88rem; }
  .nav-toggle { display: none; }
  .hero { padding: 80px 0 100px; }
  .hero h1 { font-size: 3.2rem; }
  .hero p { font-size: 1.1rem; }
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .pick-grid { grid-template-columns: repeat(3, 1fr); }
  .article-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(4, 1fr); }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .page-hero h1 { font-size: 2.5rem; }
}