/* ============================================
   Ammonia Observatory — Master Stylesheet v3
   ============================================ */

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

:root {
  --teal-50:  #E1F5EE; --teal-100: #9FE1CB; --teal-200: #5DCAA5;
  --teal-400: #1D9E75; --teal-600: #0F6E56; --teal-800: #085041; --teal-900: #04342C;
  --gray-50:  #F1EFE8; --gray-100: #D3D1C7; --gray-200: #B4B2A9;
  --gray-400: #888780; --gray-600: #5F5E5A; --gray-800: #444441; --gray-900: #2C2C2A;
  --bg: #F8F7F3; --white: #ffffff;
  --font-sans:  'Instrument Sans', sans-serif;
  --font-serif: 'DM Serif Display', serif;
  --font-mono:  'DM Mono', monospace;
  --radius-sm: 3px; --radius-md: 6px; --radius-lg: 8px;
  --max-width: 1100px;
  --nav-h: 58px;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--gray-900); line-height: 1.6; font-size: 15px; }
a { color: inherit; }
img { max-width: 100%; display: block; }

/* ── Typography ── */
h1 { font-family: var(--font-serif); font-size: 48px; line-height: 1.1; letter-spacing: -0.02em; color: var(--gray-900); margin-bottom: 1.5rem; }
h1 em { font-style: italic; color: var(--teal-600); }
h2 { font-family: var(--font-serif); font-size: 32px; color: var(--gray-900); letter-spacing: -0.01em; margin-bottom: 0.75rem; line-height: 1.2; }
h3 { font-family: var(--font-serif); font-size: 22px; color: var(--gray-900); letter-spacing: -0.01em; line-height: 1.3; margin-bottom: 0.5rem; }
.section-label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--teal-600); margin-bottom: 0.75rem; display: block; }
.section-sub { color: var(--gray-600); max-width: 520px; margin-bottom: 2.5rem; font-size: 15px; }
blockquote { border-left: 3px solid var(--teal-200); padding-left: 1.25rem; margin: 1.5rem 0; font-family: var(--font-serif); font-size: 19px; color: var(--gray-800); line-height: 1.5; font-style: italic; }

/* ── Layout ── */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 2.5rem; }
section { padding: 4rem 2.5rem; max-width: var(--max-width); margin: 0 auto; }
.divider { height: 1px; background: var(--gray-100); }

/* ── Navigation ── */
nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 2.5rem; height: var(--nav-h);
  background: var(--bg); border-bottom: 1px solid var(--gray-100);
  position: sticky; top: 0; z-index: 200;
}
.logo { display: flex; align-items: baseline; gap: 10px; text-decoration: none; }
.logo-mark { font-family: var(--font-mono); font-size: 11px; font-weight: 500; color: var(--teal-600); letter-spacing: 0.12em; text-transform: uppercase; background: var(--teal-50); padding: 3px 8px; border-radius: var(--radius-sm); border: 1px solid var(--teal-100); }
.logo-name { font-family: var(--font-serif); font-size: 18px; color: var(--gray-900); letter-spacing: -0.01em; }

/* Primary nav links */
.nav-links { display: flex; gap: 0; list-style: none; align-items: stretch; height: 100%; }
.nav-links > li { position: relative; display: flex; align-items: center; }
.nav-links > li > a {
  text-decoration: none; font-size: 13px; color: var(--gray-600);
  letter-spacing: 0.02em; transition: color 0.15s;
  padding: 0 0.9rem; height: 100%; display: flex; align-items: center;
  white-space: nowrap;
}
.nav-links > li > a:hover,
.nav-links > li > a.active { color: var(--teal-600); }
.nav-links > li > a.active { border-bottom: 2px solid var(--teal-400); }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-toggle { cursor: pointer; gap: 4px; }
.nav-dropdown-toggle svg { width: 10px; height: 10px; stroke: currentColor; fill: none; stroke-width: 2; transition: transform 0.15s; }
.nav-dropdown:hover .nav-dropdown-toggle svg { transform: rotate(180deg); }
.dropdown-menu {
  display: none; position: absolute; top: calc(100% + 1px); left: 0;
  background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-md);
  min-width: 200px; padding: 6px; z-index: 300;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.nav-dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu a { display: block; padding: 8px 12px; font-size: 13px; color: var(--gray-600); text-decoration: none; border-radius: var(--radius-sm); transition: background 0.1s, color 0.1s; }
.dropdown-menu a:hover { background: var(--teal-50); color: var(--teal-800); }
.dropdown-divider { height: 1px; background: var(--gray-100); margin: 4px 0; }

.nav-cta { background: var(--teal-600) !important; color: var(--white) !important; padding: 7px 16px !important; border-radius: var(--radius-sm); font-weight: 500 !important; height: auto !important; margin-left: 0.5rem; transition: background 0.15s !important; }
.nav-cta:hover { background: var(--teal-800) !important; }

.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 4px; flex-direction: column; gap: 5px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--gray-800); border-radius: 2px; transition: 0.2s; }

/* ── Buttons ── */
.btn-primary { background: var(--gray-900); color: var(--white); padding: 11px 24px; border-radius: var(--radius-sm); text-decoration: none; font-size: 14px; font-weight: 500; transition: background 0.15s; cursor: pointer; border: none; font-family: var(--font-sans); display: inline-block; }
.btn-primary:hover { background: var(--teal-800); }
.btn-secondary { background: transparent; color: var(--gray-900); padding: 11px 24px; border-radius: var(--radius-sm); text-decoration: none; font-size: 14px; font-weight: 500; border: 1px solid var(--gray-200); transition: border-color 0.15s, color 0.15s; cursor: pointer; font-family: var(--font-sans); display: inline-block; }
.btn-secondary:hover { border-color: var(--teal-400); color: var(--teal-600); }
.btn-ghost { color: var(--gray-600); text-decoration: none; font-size: 13px; display: inline-flex; align-items: center; gap: 6px; transition: color 0.15s; cursor: pointer; background: none; border: none; font-family: var(--font-sans); padding: 0; }
.btn-ghost:hover { color: var(--teal-600); }

/* ── Badges ── */
.badge { font-size: 10px; font-family: var(--font-mono); padding: 2px 8px; border-radius: var(--radius-sm); font-weight: 500; letter-spacing: 0.04em; white-space: nowrap; }
.badge-active { background: var(--teal-50);  color: var(--teal-800); border: 1px solid var(--teal-100); }
.badge-dev    { background: #FEF3C7; color: #92400E; border: 1px solid #FDE68A; }
.badge-plan   { background: var(--gray-50);  color: var(--gray-600); border: 1px solid var(--gray-100); }
.badge-tag    { background: var(--teal-50);  color: var(--teal-800); border: 1px solid var(--teal-100); font-size: 11px; padding: 3px 10px; }

/* ── Hero ── */
.hero { padding: 5rem 2.5rem 4rem; max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.hero-eyebrow { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal-600); margin-bottom: 1.25rem; display: block; }
.hero-sub { font-size: 16px; color: var(--gray-600); line-height: 1.7; margin-bottom: 2rem; max-width: 440px; }
.hero-actions { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }

/* ── Hero Panel ── */
.hero-panel { background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-lg); padding: 1.75rem; }
.panel-header { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gray-400); margin-bottom: 1.25rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--gray-50); }
.stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.25rem; }
.stat-label { font-size: 11px; color: var(--gray-400); font-family: var(--font-mono); letter-spacing: 0.06em; margin-bottom: 4px; }
.stat-value { font-size: 22px; font-family: var(--font-serif); color: var(--gray-900); }
.stat-value span { font-size: 12px; font-family: var(--font-sans); color: var(--teal-600); margin-left: 4px; }
.project-list { border-top: 1px solid var(--gray-50); padding-top: 1rem; }
.project-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--gray-50); font-size: 13px; gap: 1rem; }
.project-item:last-child { border-bottom: none; }
.project-name { color: var(--gray-800); font-weight: 500; }
.project-loc { color: var(--gray-400); font-size: 11px; font-family: var(--font-mono); margin-top: 2px; }

/* ── Quick-access tiles (homepage) ── */
.quicklinks { display: grid; grid-template-columns: repeat(4,1fr); gap: 1rem; }
.quicklink-tile { background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-md); padding: 1.25rem 1.25rem 1rem; text-decoration: none; transition: border-color 0.15s, transform 0.15s; display: flex; flex-direction: column; gap: 0.5rem; }
.quicklink-tile:hover { border-color: var(--teal-200); transform: translateY(-2px); }
.quicklink-icon { width: 32px; height: 32px; background: var(--teal-50); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; }
.quicklink-icon svg { width: 16px; height: 16px; stroke: var(--teal-600); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.quicklink-title { font-size: 13px; font-weight: 600; color: var(--gray-900); }
.quicklink-desc  { font-size: 12px; color: var(--gray-400); line-height: 1.5; }

/* ── Features Grid ── */
.features-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
.feature-card { background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-md); padding: 1.5rem; transition: border-color 0.15s; }
.feature-card:hover { border-color: var(--teal-200); }
.feature-icon { width: 32px; height: 32px; background: var(--teal-50); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; }
.feature-icon svg { width: 16px; height: 16px; stroke: var(--teal-600); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.feature-title { font-size: 14px; font-weight: 600; color: var(--gray-900); margin-bottom: 0.5rem; }
.feature-desc  { font-size: 13px; color: var(--gray-600); line-height: 1.6; }

/* ── News Grid ── */
.news-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 1.5rem; }
.news-card { background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-md); padding: 1.5rem; display: flex; flex-direction: column; gap: 0.75rem; text-decoration: none; transition: border-color 0.15s; }
.news-card:hover { border-color: var(--teal-200); }
.news-card.featured { border-color: var(--teal-100); background: #FAFDF9; }
.news-tag { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal-600); }
.news-title { font-family: var(--font-serif); font-size: 17px; color: var(--gray-900); line-height: 1.35; }
.news-card:not(.featured) .news-title { font-size: 14px; font-family: var(--font-sans); font-weight: 500; }
.news-excerpt { font-size: 13px; color: var(--gray-600); line-height: 1.65; }
.news-meta { font-size: 11px; color: var(--gray-400); font-family: var(--font-mono); margin-top: auto; }

/* ── Newsletter ── */
.newsletter-strip { background: var(--gray-900); padding: 3rem 2.5rem; }
.newsletter-inner { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.newsletter-inner h2 { color: var(--white); font-size: 28px; margin-bottom: 0.5rem; }
.newsletter-inner > div > p { color: var(--gray-400); font-size: 14px; }
.subscribe-form { display: flex; gap: 0.75rem; }
.subscribe-form input { flex: 1; min-width: 0; padding: 11px 16px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15); border-radius: var(--radius-sm); font-size: 14px; color: var(--white); font-family: var(--font-sans); outline: none; transition: border-color 0.15s; }
.subscribe-form input::placeholder { color: rgba(255,255,255,0.35); }
.subscribe-form input:focus { border-color: var(--teal-400); }
.btn-subscribe { background: var(--teal-400); color: var(--white); padding: 11px 20px; border-radius: var(--radius-sm); border: none; font-size: 14px; font-weight: 500; cursor: pointer; font-family: var(--font-sans); white-space: nowrap; transition: background 0.15s; }
.btn-subscribe:hover { background: var(--teal-600); }
.sub-note { font-size: 11px; color: rgba(255,255,255,0.3); margin-top: 0.75rem; font-family: var(--font-mono); letter-spacing: 0.04em; }
.success-msg { display: none; color: var(--teal-200); font-size: 13px; font-family: var(--font-mono); margin-top: 0.75rem; letter-spacing: 0.04em; }

/* ── About ── */
.about-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 3rem; align-items: start; }
.about-aside { background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-md); padding: 1.5rem; }
.about-aside-header { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gray-400); margin-bottom: 1rem; }
.about-stat { padding: 1rem 0; border-bottom: 1px solid var(--gray-50); }
.about-stat:last-child { border-bottom: none; padding-bottom: 0; }
.about-stat-label { font-size: 11px; color: var(--gray-400); font-family: var(--font-mono); letter-spacing: 0.06em; margin-bottom: 4px; }
.about-stat-value { font-size: 13px; color: var(--gray-800); font-weight: 500; }
.about-stat-value a { color: var(--teal-600); text-decoration: none; }
.about-body p { font-size: 15px; color: var(--gray-600); line-height: 1.8; margin-bottom: 1rem; }
.about-body p:last-child { margin-bottom: 0; }

/* ── Principles ── */
.principles-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; margin-top: 2rem; }
.principle-card { border-left: 3px solid var(--teal-200); padding-left: 1.25rem; }
.principle-title { font-size: 14px; font-weight: 600; color: var(--gray-900); margin-bottom: 0.4rem; }
.principle-desc  { font-size: 13px; color: var(--gray-600); line-height: 1.6; }

/* ── Contact Form ── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
.contact-info p { font-size: 15px; color: var(--gray-600); line-height: 1.8; margin-bottom: 1.5rem; }
.contact-detail { display: flex; flex-direction: column; gap: 0.75rem; }
.contact-detail-item { display: flex; align-items: center; gap: 0.75rem; font-size: 13px; color: var(--gray-800); }
.contact-detail-item svg { width: 16px; height: 16px; stroke: var(--teal-600); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.contact-form { background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-md); padding: 2rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 12px; font-family: var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--gray-600); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 14px; background: var(--bg); border: 1px solid var(--gray-100); border-radius: var(--radius-sm); font-size: 14px; color: var(--gray-900); font-family: var(--font-sans); outline: none; transition: border-color 0.15s; appearance: none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--teal-400); }
.form-group textarea { resize: vertical; min-height: 120px; line-height: 1.6; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-success { display: none; text-align: center; padding: 2rem; }
.form-success-icon { width: 48px; height: 48px; background: var(--teal-50); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 1rem; }
.form-success-icon svg { width: 20px; height: 20px; stroke: var(--teal-600); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ── Blog / Insights ── */
.page-hero { padding: 4rem 2.5rem 3rem; max-width: var(--max-width); margin: 0 auto; border-bottom: 1px solid var(--gray-100); }
.blog-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 3rem; align-items: start; }
.blog-main { display: flex; flex-direction: column; gap: 1.5rem; }
.blog-card { background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-md); padding: 1.75rem; text-decoration: none; display: flex; flex-direction: column; gap: 0.75rem; transition: border-color 0.15s; }
.blog-card:hover { border-color: var(--teal-200); }
.blog-card.featured { border-color: var(--teal-100); background: #FAFDF9; }
.blog-card-meta { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.blog-card h3 { font-family: var(--font-serif); font-size: 20px; color: var(--gray-900); line-height: 1.3; margin: 0; }
.blog-card p { font-size: 14px; color: var(--gray-600); line-height: 1.7; }
.blog-card-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 0.25rem; padding-top: 0.75rem; border-top: 1px solid var(--gray-50); }
.read-time { font-size: 11px; color: var(--gray-400); font-family: var(--font-mono); }
.read-more { font-size: 12px; color: var(--teal-600); font-family: var(--font-mono); letter-spacing: 0.04em; }
.blog-sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-card { background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-md); padding: 1.25rem; }
.sidebar-card-title { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gray-400); margin-bottom: 1rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--gray-50); }
.sidebar-item { display: flex; flex-direction: column; gap: 3px; padding: 8px 0; border-bottom: 1px solid var(--gray-50); text-decoration: none; transition: color 0.15s; }
.sidebar-item:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-item:hover .sidebar-item-title { color: var(--teal-600); }
.sidebar-item-title { font-size: 13px; color: var(--gray-800); font-weight: 500; line-height: 1.4; }
.sidebar-item-meta  { font-size: 11px; color: var(--gray-400); font-family: var(--font-mono); }
.topic-tags { display: flex; flex-wrap: wrap; gap: 6px; }

/* ── Tracker tables (projects pages) ── */
.tracker-controls { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; margin-bottom: 1.5rem; }
.tracker-controls input { flex:1; min-width:180px; padding:9px 14px; background:var(--white); border:1px solid var(--gray-100); border-radius:var(--radius-sm); font-size:13px; color:var(--gray-900); font-family:var(--font-sans); outline:none; transition:border-color 0.15s; }
.tracker-controls input:focus { border-color: var(--teal-400); }
.tracker-controls select { padding:9px 32px 9px 14px; background:var(--white); border:1px solid var(--gray-100); border-radius:var(--radius-sm); font-size:13px; color:var(--gray-900); font-family:var(--font-sans); outline:none; cursor:pointer; appearance:none; background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888780' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position:right 10px center; }
.result-count { font-family:var(--font-mono); font-size:11px; color:var(--gray-400); letter-spacing:0.06em; margin-left:auto; }
.tracker-table-wrap { background:var(--white); border:1px solid var(--gray-100); border-radius:var(--radius-md); overflow:hidden; }
.tracker-table { width:100%; border-collapse:collapse; font-size:13px; }
.tracker-table th { font-family:var(--font-mono); font-size:10px; letter-spacing:0.1em; text-transform:uppercase; color:var(--gray-400); padding:12px 16px; text-align:left; background:var(--gray-50); border-bottom:1px solid var(--gray-100); white-space:nowrap; }
.tracker-table td { padding:12px 16px; border-bottom:1px solid var(--gray-50); vertical-align:middle; }
.tracker-table tr:last-child td { border-bottom:none; }
.tracker-table tr:hover td { background:#FAFDF9; }
.project-cell-name { font-weight:500; color:var(--gray-900); margin-bottom:2px; }
.project-cell-dev  { font-size:11px; color:var(--gray-400); font-family:var(--font-mono); }
.cap-val { font-family:var(--font-mono); font-size:12px; color:var(--gray-800); }
.no-results { text-align:center; padding:3rem; color:var(--gray-400); font-family:var(--font-mono); font-size:12px; letter-spacing:0.06em; }
.stat-cards { display:grid; grid-template-columns:repeat(3,auto); gap:1rem; margin-bottom:2rem; width:fit-content; }

/* ── Region nav (project pages) ── */
.region-subnav { background:var(--white); border-bottom:1px solid var(--gray-100); overflow-x:auto; }
.region-subnav-inner { max-width:var(--max-width); margin:0 auto; padding:0 2.5rem; display:flex; gap:0; white-space:nowrap; }
.region-subnav a { font-size:12px; font-family:var(--font-mono); padding:0.75rem 1rem; color:var(--gray-400); text-decoration:none; border-bottom:2px solid transparent; display:inline-block; letter-spacing:0.06em; transition:color 0.15s; }
.region-subnav a:hover { color:var(--teal-600); }
.region-subnav a.active { color:var(--teal-600); border-bottom-color:var(--teal-400); }

/* ── Footer ── */
.footer-wrap { border-top: 1px solid var(--gray-100); }
footer { padding: 2rem 2.5rem; display: flex; justify-content: space-between; align-items: center; max-width: var(--max-width); margin: 0 auto; flex-wrap: wrap; gap: 1rem; }
footer p { font-size: 12px; color: var(--gray-400); font-family: var(--font-mono); }
.footer-logo { display: flex; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.footer-links { display: flex; gap: 1.5rem; list-style: none; flex-wrap: wrap; }
.footer-links a { font-size: 12px; color: var(--gray-400); text-decoration: none; font-family: var(--font-mono); transition: color 0.15s; }
.footer-links a:hover { color: var(--teal-600); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 2.5rem; padding: 3rem 1.5rem; }
  h1 { font-size: 36px; } h2 { font-size: 26px; }
  .hero-sub { max-width: 100%; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr 1fr; }
  .newsletter-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .about-grid { grid-template-columns: 1fr; }
  .principles-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .quicklinks { grid-template-columns: 1fr 1fr; }
  section { padding: 3rem 1.5rem; }
  .page-hero { padding: 3rem 1.5rem 2rem; }
}

@media (max-width: 700px) {
  nav { padding: 0 1.5rem; }
  .nav-links { display: none; flex-direction: column; position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0; background: var(--bg); padding: 1.5rem; gap: 0; overflow-y: auto; z-index: 199; border-top: 1px solid var(--gray-100); }
  .nav-links.open { display: flex; }
  .nav-links > li { width: 100%; border-bottom: 1px solid var(--gray-50); }
  .nav-links > li > a { padding: 1rem 0; width: 100%; height: auto; }
  .dropdown-menu { position: static; box-shadow: none; border: none; padding: 0 0 0 1rem; background: transparent; display: block; }
  .dropdown-menu a { padding: 8px 0; font-size: 13px; }
  .hamburger { display: flex; }
  h1 { font-size: 28px; } h2 { font-size: 22px; }
  .features-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .principles-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .subscribe-form { flex-direction: column; }
  .newsletter-strip { padding: 2rem 1.5rem; }
  footer { flex-direction: column; align-items: flex-start; }
  .footer-links { gap: 1rem; }
  .quicklinks { grid-template-columns: 1fr 1fr; }
  .blog-card-footer { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  section { padding: 2.5rem 1.5rem; }
  .page-hero { padding: 2.5rem 1.5rem 2rem; }
  .tracker-table th:nth-child(4), .tracker-table td:nth-child(4) { display: none; }
  .tracker-table th:nth-child(5), .tracker-table td:nth-child(5) { display: none; }
}