@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

:root {
  --color-canvas: #f7f7f4;
  --color-canvas-soft: #fafaf7;
  --color-surface-card: #ffffff;
  --color-surface-strong: #e6e5e0;
  --color-primary: #f54e00;
  --color-primary-active: #d04200;
  --color-ink: #26251e;
  --color-body: #5a5852;
  --color-body-strong: #26251e;
  --color-muted: #807d72;
  --color-muted-soft: #a09c92;
  --color-on-primary: #ffffff;
  --color-hairline: #e6e5e0;
  --color-hairline-soft: #efeee8;
  --color-hairline-strong: #cfcdc4;
  --color-semantic-success: #1f8a65;
  --color-semantic-error: #cf2d56;

  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-pill: 9999px;

  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-base: 16px;
  --spacing-md: 20px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 80px;
}

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

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

body {
  background-color: var(--color-canvas);
  color: var(--color-body);
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-ink);
  text-decoration: none;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

/* TOP NAV */
.site-nav {
  background-color: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.site-nav__logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.3px;
  line-height: 1;
}

.site-nav__logo span {
  color: var(--color-primary);
}

.site-nav__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.site-nav__menu a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-body);
  line-height: 1.4;
  transition: color 0.15s;
}

.site-nav__menu a:hover {
  color: var(--color-ink);
}

.site-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: var(--spacing-xs);
}

.site-nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 2px;
  transition: all 0.2s;
}

/* HERO */
.hero {
  padding: var(--spacing-section) 0;
  background-color: var(--color-canvas);
}

.hero__label {
  display: inline-block;
  background-color: var(--color-surface-strong);
  color: var(--color-ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--rounded-pill);
  margin-bottom: var(--spacing-lg);
}

.hero__title {
  font-size: 72px;
  font-weight: 400;
  color: var(--color-ink);
  line-height: 1.1;
  letter-spacing: -2.16px;
  max-width: 800px;
  margin-bottom: var(--spacing-lg);
}

.hero__desc {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-body);
  line-height: 1.5;
  max-width: 560px;
  margin-bottom: var(--spacing-xxl);
}

/* SECTION HEADINGS */
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--spacing-sm);
}

.section-title {
  font-size: 36px;
  font-weight: 400;
  color: var(--color-ink);
  line-height: 1.2;
  letter-spacing: -0.72px;
  margin-bottom: var(--spacing-base);
}

.section-title--md {
  font-size: 26px;
  letter-spacing: -0.325px;
  line-height: 1.25;
}

.section-desc {
  font-size: 16px;
  color: var(--color-body);
  line-height: 1.5;
  max-width: 600px;
  margin-bottom: var(--spacing-xxl);
}

.section-band {
  padding: var(--spacing-section) 0;
}

.section-band--alt {
  background-color: var(--color-canvas-soft);
}

/* CARDS */
.card-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.card-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.card-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.feature-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  transition: border-color 0.15s;
}

.feature-card:hover {
  border-color: var(--color-hairline-strong);
}

.feature-card__img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--rounded-md);
  margin-bottom: var(--spacing-base);
}

.feature-card__tag {
  display: inline-block;
  background-color: var(--color-surface-strong);
  color: var(--color-ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--rounded-pill);
  margin-bottom: var(--spacing-sm);
}

.feature-card__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}

.feature-card__title a {
  color: var(--color-ink);
}

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

.feature-card__excerpt {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.5;
  margin-bottom: var(--spacing-base);
}

.feature-card__meta {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.4;
}

/* ARTICLE PAGE */
.article-hero {
  padding: var(--spacing-xxl) 0 0;
}

.article-hero__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--spacing-sm);
}

.article-hero__title {
  font-size: 48px;
  font-weight: 400;
  color: var(--color-ink);
  line-height: 1.1;
  letter-spacing: -1.2px;
  margin-bottom: var(--spacing-base);
  max-width: 780px;
}

.article-hero__meta {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xxl);
}

.article-hero__img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--rounded-lg);
  border: 1px solid var(--color-hairline);
  margin-bottom: var(--spacing-section);
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding-bottom: var(--spacing-section);
}

.article-body h2 {
  font-size: 26px;
  font-weight: 400;
  color: var(--color-ink);
  line-height: 1.25;
  letter-spacing: -0.325px;
  margin: var(--spacing-xxl) 0 var(--spacing-base);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.3;
  margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.article-body p {
  font-size: 16px;
  color: var(--color-body);
  line-height: 1.5;
  margin-bottom: var(--spacing-base);
}

.article-body ul,
.article-body ol {
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-base);
}

.article-body li {
  font-size: 16px;
  color: var(--color-body);
  line-height: 1.5;
  margin-bottom: var(--spacing-xs);
}

.article-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body .note-block {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-left: 3px solid var(--color-ink);
  border-radius: 0 var(--rounded-md) var(--rounded-md) 0;
  padding: var(--spacing-base) var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  font-size: 15px;
  color: var(--color-body-strong);
}

.article-body .img-block {
  margin: var(--spacing-xl) 0;
}

.article-body .img-block img {
  width: 100%;
  border-radius: var(--rounded-lg);
  border: 1px solid var(--color-hairline);
}

.article-body .img-block figcaption {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.4;
  margin-top: var(--spacing-xs);
  text-align: center;
}

.article-body .sources-list {
  border-top: 1px solid var(--color-hairline);
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-xxl);
  list-style: none;
  padding-left: 0;
}

.article-body .sources-list li {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xs);
}

.article-body .sources-list a {
  color: var(--color-muted);
  text-decoration: underline;
}

/* DIVIDER */
.divider {
  border: none;
  border-top: 1px solid var(--color-hairline);
  margin: 0;
}

/* CONTACT FORM */
.contact-section {
  padding: var(--spacing-section) 0;
}

.form-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  max-width: 600px;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--rounded-md);
  padding: 12px 16px;
  height: 44px;
  font-size: 16px;
  font-family: inherit;
  color: var(--color-ink);
  transition: border-color 0.15s;
  outline: none;
}

.form-group textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
}

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

.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-semantic-error);
}

.form-error {
  font-size: 13px;
  color: var(--color-semantic-error);
  margin-top: 4px;
  display: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  line-height: 1.0;
  padding: 10px 18px;
  height: 40px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  transition: background-color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-success {
  display: none;
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-left: 3px solid var(--color-semantic-success);
  border-radius: 0 var(--rounded-md) var(--rounded-md) 0;
  padding: var(--spacing-base) var(--spacing-lg);
  font-size: 15px;
  color: var(--color-semantic-success);
  margin-top: var(--spacing-base);
}

/* COOKIE BANNER */
#cookie-banner {
  display: none;
  position: fixed;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-ink);
  color: var(--color-canvas);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-base) var(--spacing-xl);
  max-width: 620px;
  width: calc(100% - var(--spacing-xl) * 2);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-base);
  box-shadow: none;
}

#cookie-banner.hidden {
  display: none !important;
}

.cookie-text {
  font-size: 14px;
  line-height: 1.4;
  color: var(--color-canvas);
}

.cookie-text a {
  color: var(--color-canvas);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.cookie-actions {
  display: flex;
  gap: var(--spacing-xs);
  flex-shrink: 0;
}

.btn-cookie-accept {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  padding: 8px 16px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  transition: background-color 0.15s;
}

.btn-cookie-accept:hover {
  background-color: var(--color-primary-active);
}

.btn-cookie-reject {
  background-color: transparent;
  color: var(--color-muted-soft);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  padding: 8px 16px;
  border-radius: var(--rounded-md);
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  transition: border-color 0.15s;
}

.btn-cookie-reject:hover {
  border-color: rgba(255,255,255,0.4);
  color: var(--color-canvas);
}

/* FOOTER */
.site-footer {
  background-color: var(--color-canvas);
  border-top: 1px solid var(--color-hairline);
  padding: 64px 0 48px;
}

.site-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: var(--spacing-xxl);
}

.footer-brand__logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.3px;
  margin-bottom: var(--spacing-base);
  display: block;
}

.footer-brand__logo span {
  color: var(--color-primary);
}

.footer-brand__desc {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.5;
  max-width: 280px;
}

.footer-col__title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--color-ink);
  margin-bottom: var(--spacing-base);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-col ul a {
  font-size: 14px;
  color: var(--color-body);
  transition: color 0.15s;
}

.footer-col ul a:hover {
  color: var(--color-ink);
}

.site-footer__bottom {
  max-width: 1200px;
  margin: var(--spacing-xxl) auto 0;
  padding: var(--spacing-base) var(--spacing-xl) 0;
  border-top: 1px solid var(--color-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-size: 13px;
  color: var(--color-muted);
}

.footer-disclaimer {
  font-size: 13px;
  color: var(--color-muted-soft);
  max-width: 500px;
  text-align: right;
}

/* PAGE HEADER */
.page-header {
  padding: var(--spacing-section) 0 var(--spacing-xxl);
  border-bottom: 1px solid var(--color-hairline);
}

.page-header__title {
  font-size: 48px;
  font-weight: 400;
  color: var(--color-ink);
  line-height: 1.1;
  letter-spacing: -1.2px;
  margin-bottom: var(--spacing-base);
}

.page-header__desc {
  font-size: 16px;
  color: var(--color-body);
  line-height: 1.5;
  max-width: 600px;
}

.page-content {
  max-width: 860px;
  margin: 0 auto;
  padding: var(--spacing-section) var(--spacing-xl);
}

.page-content h2 {
  font-size: 26px;
  font-weight: 400;
  color: var(--color-ink);
  letter-spacing: -0.325px;
  line-height: 1.25;
  margin: var(--spacing-xxl) 0 var(--spacing-base);
}

.page-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.page-content p {
  font-size: 16px;
  color: var(--color-body);
  line-height: 1.5;
  margin-bottom: var(--spacing-base);
}

.page-content ul,
.page-content ol {
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-base);
}

.page-content li {
  font-size: 16px;
  color: var(--color-body);
  line-height: 1.5;
  margin-bottom: var(--spacing-xs);
}

.page-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* BREADCRUMB */
.breadcrumb {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: var(--spacing-base);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.breadcrumb a {
  color: var(--color-muted);
}

.breadcrumb a:hover {
  color: var(--color-ink);
}

.breadcrumb__sep {
  color: var(--color-muted-soft);
}

/* RELATED ARTICLES */
.related-section {
  padding: var(--spacing-section) 0;
  border-top: 1px solid var(--color-hairline);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero__title {
    font-size: 56px;
    letter-spacing: -1.4px;
  }

  .card-grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 768px) {
  .site-nav__menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    flex-direction: column;
    padding: var(--spacing-base) var(--spacing-xl);
    gap: var(--spacing-base);
  }

  .site-nav__menu.open {
    display: flex;
  }

  .site-nav__hamburger {
    display: flex;
  }

  .hero__title {
    font-size: 36px;
    letter-spacing: -0.9px;
  }

  .section-title {
    font-size: 28px;
  }

  .article-hero__title {
    font-size: 32px;
    letter-spacing: -0.5px;
  }

  .page-header__title {
    font-size: 32px;
  }

  .card-grid--3,
  .card-grid--2 {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__bottom {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }

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

  .container {
    padding: 0 var(--spacing-base);
  }
}

@media (max-width: 640px) {
  .hero__title {
    font-size: 28px;
    letter-spacing: -0.5px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  #cookie-banner {
    flex-direction: column;
    align-items: flex-start;
    bottom: 0;
    border-radius: var(--rounded-lg) var(--rounded-lg) 0 0;
    left: 0;
    right: 0;
    transform: none;
    width: 100%;
  }

  .form-card {
    padding: var(--spacing-xl);
  }
}