/* ==========================================================================
   Netdata 中文官网 — 扁平专业官网风
   Brand palette: 白底 + 品牌绿 (#00A94F) 点缀，深灰文字
   Typography: 'Inter' + 系统中文字体，等宽字体仅用于代码
   原则：大量留白 · 细边框 · 轻阴影 · 无霓虹/发光/扫描线
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --nd-bg:           #FFFFFF;
  --nd-bg-2:         #F6F8F7;
  --nd-surface:      #FFFFFF;
  --nd-surface-2:    #FAFBFB;
  --nd-border:       #E6EBE8;
  --nd-border-hi:    #D3DCD7;

  --nd-text:         #111A15;
  --nd-text-2:       #3A4741;
  --nd-text-muted:   #6B7771;

  --nd-green:        #00A94F;
  --nd-green-2:      #008A40;
  --nd-green-dark:   #007A38;
  --nd-green-soft:   #E8F5EE;
  --nd-cyan:         #0B7F91;
  --nd-cyan-soft:    #E5F3F6;
  --nd-amber:        #C77800;
  --nd-red:          #D9364F;

  --nd-shadow-sm:    0 1px 2px rgba(16, 26, 21, 0.05);
  --nd-shadow-md:    0 6px 24px rgba(16, 26, 21, 0.08);
  --nd-shadow-lg:    0 16px 48px rgba(16, 26, 21, 0.12);

  --nd-radius:       8px;
  --nd-radius-lg:    14px;

  --nd-font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
                     'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --nd-font-mono:    'SFMono-Regular', 'JetBrains Mono', Consolas, 'Liberation Mono', monospace;
  --nd-font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
                     'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;

  --nd-max-w:        1160px;
  --nd-nav-h:        68px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--nd-font-body);
  background: var(--nd-bg);
  color: var(--nd-text);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; display: block; }
a { color: var(--nd-green-2); text-decoration: none; transition: color .18s; }
a:hover { color: var(--nd-green-dark); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }

/* Skip link for a11y */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--nd-green); color: #fff;
  padding: 8px 16px; z-index: 9999; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- Layout primitives ---------- */
.container {
  width: 100%; max-width: var(--nd-max-w);
  margin: 0 auto; padding: 0 24px;
  position: relative; z-index: 1;
}
.section { padding: 88px 0; position: relative; }
.section--tight { padding: 48px 0; }
.section--alt { background: var(--nd-bg-2); border-top: 1px solid var(--nd-border); border-bottom: 1px solid var(--nd-border); }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5 {
  font-family: var(--nd-font-display); font-weight: 700; line-height: 1.22;
  letter-spacing: -0.01em; color: var(--nd-text);
}
.h1 { font-size: clamp(2.3rem, 4.6vw, 3.4rem); font-weight: 800; letter-spacing: -0.02em; }
.h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
.h3 { font-size: clamp(1.2rem, 1.8vw, 1.45rem); }
.lead { font-size: clamp(1.05rem, 1.5vw, 1.2rem); color: var(--nd-text-2); }
.mono { font-family: var(--nd-font-mono); }
.text-muted { color: var(--nd-text-muted); }
.text-green { color: var(--nd-green-2); }
.text-cyan  { color: var(--nd-cyan); }

.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.02em;
  color: var(--nd-green-2);
  padding: 5px 14px; border-radius: 999px;
  background: var(--nd-green-soft);
  margin-bottom: 18px;
}
.section-head h2 { margin-bottom: 14px; }
.section-head p { color: var(--nd-text-2); font-size: 1.05rem; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--nd-border);
}
.site-header .container { display: flex; align-items: center; height: var(--nd-nav-h); gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand img, .brand svg { height: 34px; width: auto; }
.brand-name { font-family: var(--nd-font-display); font-weight: 700; font-size: 18px; letter-spacing: 0; color: var(--nd-text); }

.main-nav { flex: 1; display: flex; justify-content: center; gap: 2px; }
.main-nav a {
  position: relative;
  padding: 8px 15px;
  font-size: 14.5px; font-weight: 500;
  color: var(--nd-text-2);
  border-radius: var(--nd-radius);
  transition: all .18s ease;
}
.main-nav a:hover { color: var(--nd-text); background: var(--nd-bg-2); }
.main-nav a[aria-current="page"] { color: var(--nd-green-2); font-weight: 600; }

.nav-cta { display: flex; gap: 12px; align-items: center; flex-shrink: 0; }
.nav-status {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 12.5px; font-weight: 500;
  color: var(--nd-text-2); padding: 5px 12px;
  border: 1px solid var(--nd-border-hi); border-radius: 999px;
  background: var(--nd-surface);
}
.nav-status::before {
  content: ''; width: 7px; height: 7px; background: var(--nd-green);
  border-radius: 50%;
}

/* Mobile menu toggle */
.nav-toggle { display: none; }
.nav-toggle button {
  width: 40px; height: 40px;
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px;
  border: 1px solid var(--nd-border-hi); border-radius: var(--nd-radius);
  background: var(--nd-surface);
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--nd-text); transition: .25s; border-radius: 2px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 960px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; top: var(--nd-nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--nd-bg); border-bottom: 1px solid var(--nd-border);
    padding: 8px; transform: translateY(-150%); transition: transform .3s ease;
    max-height: calc(100vh - var(--nd-nav-h)); overflow-y: auto;
    box-shadow: var(--nd-shadow-md);
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { padding: 14px 16px; }
  .nav-status { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--nd-font-body); font-size: 15px; font-weight: 600;
  letter-spacing: 0; text-transform: none;
  padding: 13px 26px; border-radius: var(--nd-radius);
  border: 1px solid transparent; background: var(--nd-bg-2); color: var(--nd-text);
  cursor: pointer; transition: all .2s ease; position: relative;
  text-decoration: none;
}
.btn:hover { background: var(--nd-border); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--nd-green); color: #FFFFFF; }
.btn--primary:hover { background: var(--nd-green-2); box-shadow: var(--nd-shadow-md); }
.btn--lg { padding: 16px 32px; font-size: 16px; }
.btn--ghost { background: var(--nd-surface); border-color: var(--nd-border-hi); color: var(--nd-text-2); }
.btn--ghost:hover { border-color: var(--nd-green); color: var(--nd-green-2); background: var(--nd-green-soft); }
.btn--block { display: flex; width: 100%; }

.btn svg { width: 17px; height: 17px; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 88px 0 60px; overflow: hidden; }
.hero .container { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero-content h1 { margin-bottom: 18px; }
.hero-content .lead { margin-bottom: 30px; max-width: 540px; }

.hero-meta { display: flex; flex-wrap: wrap; gap: 14px 26px; margin-bottom: 34px; }
.hero-meta .meta-item {
  display: flex; align-items: center; gap: 9px;
  font-size: 14px; font-weight: 500;
  color: var(--nd-text-2);
}
.hero-meta .meta-item svg { width: 17px; height: 17px; color: var(--nd-green); flex-shrink: 0; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }

/* Hero terminal / install card */
.hero-visual { position: relative; }
.terminal {
  background: #0F1B14;
  border: 1px solid #263229;
  border-radius: var(--nd-radius-lg);
  overflow: hidden;
  box-shadow: var(--nd-shadow-lg);
}
.terminal-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: #16211A;
  border-bottom: 1px solid #263229;
  font-family: var(--nd-font-mono); font-size: 12px; color: #9AB3A2;
}
.terminal-dot { width: 12px; height: 12px; border-radius: 50%; }
.terminal-dot.r { background: #FF5F56; }
.terminal-dot.y { background: #FFBD2E; }
.terminal-dot.g { background: #27C93F; }
.terminal-title { margin-left: 12px; }
.terminal-body {
  padding: 20px 22px; font-family: var(--nd-font-mono);
  font-size: 13px; line-height: 1.8; min-height: 260px;
}
.terminal-body .t-prompt { color: #4ADE80; }
.terminal-body .t-cmd { color: #F1F5F2; }
.terminal-body .t-out { color: #9AB3A2; }
.terminal-body .t-ok { color: #4ADE80; }
.terminal-body .t-warn { color: #FBBF24; }
.terminal-body .cursor { display: inline-block; width: 8px; height: 16px; background: #4ADE80; animation: blink 1s steps(2) infinite; vertical-align: text-bottom; }

@media (max-width: 880px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}

/* ---------- Stats strip ---------- */
.stats-strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0; padding: 40px 0;
  border-top: 1px solid var(--nd-border); border-bottom: 1px solid var(--nd-border);
  background: var(--nd-bg);
}
.stat {
  text-align: center; padding: 12px;
  border-right: 1px solid var(--nd-border);
}
.stat:last-child { border-right: 0; }
.stat .num {
  font-family: var(--nd-font-display); font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800; color: var(--nd-text); letter-spacing: -0.02em;
}
.stat .num .suffix, .stat .num [data-suffix] { color: var(--nd-green); }
.stat .label { font-size: 12.5px; letter-spacing: 0.02em; color: var(--nd-text-muted); margin-top: 4px; font-weight: 500; }
@media (max-width: 720px) {
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--nd-border); }
}

/* ---------- Card grid ---------- */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

/* ---------- Feature / scenario card ---------- */
.card {
  position: relative;
  background: var(--nd-surface);
  border: 1px solid var(--nd-border);
  border-radius: var(--nd-radius-lg);
  padding: 28px;
  transition: all .2s ease;
  box-shadow: var(--nd-shadow-sm);
}
.card:hover {
  border-color: var(--nd-border-hi);
  transform: translateY(-3px);
  box-shadow: var(--nd-shadow-md);
}

.card-icon {
  width: 52px; height: 52px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--nd-green-soft); border-radius: 12px;
  margin-bottom: 18px;
}
.card-icon svg { width: 26px; height: 26px; color: var(--nd-green-2); }
.card h3 { font-size: 1.18rem; margin-bottom: 10px; color: var(--nd-text); }
.card p { color: var(--nd-text-2); font-size: 0.95rem; }
.card .card-tag {
  display: inline-block; margin-top: 16px;
  font-size: 12px; font-weight: 600;
  color: var(--nd-cyan); letter-spacing: 0.01em;
}
.card .card-meta {
  display: flex; gap: 12px; flex-wrap: wrap; margin-top: 14px;
  padding-top: 14px; border-top: 1px solid var(--nd-border);
}
.card .card-meta span {
  font-size: 12px; font-weight: 500;
  color: var(--nd-text-muted); display: inline-flex; align-items: center; gap: 4px;
}

/* Numbered card variant */
.card--numbered .card-num {
  position: absolute; top: 22px; right: 24px;
  font-family: var(--nd-font-display); font-size: 2.2rem;
  color: var(--nd-border-hi); font-weight: 800;
}

/* ---------- Reviews ---------- */
.review-card {
  position: relative;
  background: var(--nd-surface);
  border: 1px solid var(--nd-border);
  border-radius: var(--nd-radius-lg);
  padding: 26px;
  box-shadow: var(--nd-shadow-sm);
}
.review-card .quote-mark {
  position: absolute; top: 14px; right: 18px;
  font-family: Georgia, serif; font-size: 3rem;
  color: var(--nd-green-soft); line-height: 1;
}
.review-card .review-text { color: var(--nd-text-2); font-size: 0.97rem; margin-bottom: 18px; font-style: normal; }
.review-card .review-meta { display: flex; align-items: center; gap: 14px; }
.review-card .avatar {
  width: 44px; height: 44px;
  background: var(--nd-green-2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--nd-font-display); font-weight: 700; color: #fff;
  font-size: 14px;
}
.review-card .reviewer-name { font-weight: 600; color: var(--nd-text); font-size: 0.95rem; }
.review-card .reviewer-role { font-size: 11.5px; color: var(--nd-text-muted); letter-spacing: 0.01em; font-weight: 500; }
.review-card .stars { display: inline-flex; gap: 2px; color: var(--nd-amber); margin-bottom: 12px; }
.review-card .stars svg { width: 15px; height: 15px; }

/* ---------- Logos / partners strip ---------- */
.partners {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 16px 28px;
  opacity: 1;
}
.partner {
  font-size: 14px; font-weight: 600;
  color: var(--nd-text-muted); letter-spacing: 0.02em;
  border: 1px solid var(--nd-border); background: var(--nd-surface);
  padding: 8px 18px; border-radius: 999px;
  transition: all .2s;
}
.partner:hover { color: var(--nd-green-2); border-color: var(--nd-green); }

/* ---------- Code blocks ---------- */
.code-block {
  background: #0F1B14; border: 1px solid #263229;
  border-radius: var(--nd-radius); padding: 18px 22px;
  font-family: var(--nd-font-mono); font-size: 13px;
  color: #F1F5F2; overflow-x: auto; position: relative;
}
.code-block .c-prompt { color: #4ADE80; user-select: none; }
.code-block .c-comment { color: #9AB3A2; }
.code-block .c-key { color: #7DD3FC; }
.code-block .c-str { color: #FBBF24; }
.code-block .copy-btn {
  position: absolute; top: 10px; right: 10px;
  font-family: var(--nd-font-mono); font-size: 11px;
  color: #9AB3A2; padding: 4px 10px;
  border: 1px solid #263229; border-radius: 6px;
  background: #16211A; transition: .2s;
}
.code-block .copy-btn:hover { color: #4ADE80; border-color: #4ADE80; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--nd-border); border-radius: var(--nd-radius-lg); }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
table th, table td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--nd-border); }
table th { background: var(--nd-bg-2); font-size: 12.5px; letter-spacing: 0.02em; color: var(--nd-text-2); font-weight: 600; }
table tr:last-child td { border-bottom: 0; }
table tr:hover td { background: var(--nd-bg-2); }
table td .check { color: var(--nd-green-2); font-weight: 700; }
table td .cross { color: var(--nd-red); }

/* ---------- Feature row (alternating image/text) ---------- */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 56px 0; border-bottom: 1px solid var(--nd-border); }
.feature-row:last-child { border-bottom: 0; }
.feature-row .visual { position: relative; min-height: 280px; }
.feature-row.reverse .visual { order: 2; }
.feature-row h3 { margin-bottom: 16px; }
.feature-row p { color: var(--nd-text-2); margin-bottom: 16px; }
.feature-row ul.checklist { display: grid; gap: 9px; margin-top: 16px; }
.feature-row ul.checklist li {
  display: flex; align-items: flex-start; gap: 10px; color: var(--nd-text-2); font-size: 0.95rem;
}
.feature-row ul.checklist li::before {
  content: ''; width: 16px; height: 16px; margin-top: 4px;
  background: var(--nd-green-soft);
  border-radius: 50%;
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23008A40' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
  background-size: 11px; background-position: center; background-repeat: no-repeat;
}
@media (max-width: 880px) { .feature-row { grid-template-columns: 1fr; gap: 32px; padding: 40px 0; } .feature-row.reverse .visual { order: 0; } }

/* ---------- Mock panel (dashboard preview) ---------- */
.mock-panel {
  background: var(--nd-surface);
  border: 1px solid var(--nd-border);
  border-radius: var(--nd-radius-lg);
  padding: 22px; position: relative; overflow: hidden;
  box-shadow: var(--nd-shadow-md);
}
.mock-panel .panel-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.mock-panel .panel-head h4 { font-size: 13px; color: var(--nd-text-2); letter-spacing: 0.02em; font-weight: 600; }
.mock-panel .panel-head .panel-status {
  font-size: 12px; color: var(--nd-green-2); display: flex; gap: 6px; align-items: center; font-weight: 600;
}
.mock-panel .panel-status::before { content: ''; width: 7px; height: 7px; background: var(--nd-green); border-radius: 50%; }

.chart-mock { display: grid; gap: 14px; }
.chart-row { display: flex; align-items: end; gap: 4px; height: 80px; }
.chart-bar { flex: 1; background: var(--nd-green); border-radius: 3px 3px 0 0; opacity: 0.9; min-height: 8px; transition: opacity .2s; }
.chart-bar:hover { opacity: 1; }
.chart-row.alt .chart-bar { background: var(--nd-cyan); }

.metric-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--nd-border); font-family: var(--nd-font-mono); font-size: 12px; }
.metric-row:last-child { border-bottom: 0; }
.metric-row .m-label { color: var(--nd-text-muted); }
.metric-row .m-value { color: var(--nd-green-2); }
.metric-row .m-value.warn { color: var(--nd-amber); }

/* ---------- Steps ---------- */
.steps { display: grid; gap: 20px; counter-reset: step; }
.step-item {
  display: grid; grid-template-columns: 64px 1fr; gap: 20px; align-items: start;
  padding: 24px; background: var(--nd-surface);
  border: 1px solid var(--nd-border); border-radius: var(--nd-radius-lg);
  box-shadow: var(--nd-shadow-sm);
}
.step-num {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--nd-font-display); font-size: 1.25rem; font-weight: 700;
  color: var(--nd-green-2); border-radius: 12px;
  background: var(--nd-green-soft);
}
.step-item h4 { font-size: 1.1rem; margin-bottom: 6px; }
.step-item p { color: var(--nd-text-2); font-size: 0.95rem; }

/* ---------- CTA banner ---------- */
.cta-banner {
  position: relative;
  padding: 64px 48px;
  background: linear-gradient(135deg, #008A40, #00A94F);
  border-radius: var(--nd-radius-lg);
  text-align: center;
  overflow: hidden;
  color: #fff;
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 { margin-bottom: 16px; color: #fff; }
.cta-banner p { color: rgba(255, 255, 255, 0.92); max-width: 580px; margin: 0 auto 28px; }
.cta-banner .tag { border-color: rgba(255,255,255,.4); color: #fff; background: rgba(255,255,255,.12); }
.cta-banner .hero-cta { justify-content: center; }
.cta-banner .btn--primary { background: #fff; color: var(--nd-green-dark); }
.cta-banner .btn--primary:hover { background: var(--nd-green-soft); color: var(--nd-green-dark); box-shadow: none; }
.cta-banner .btn--ghost { background: transparent; border-color: rgba(255,255,255,.5); color: #fff; }
.cta-banner .btn--ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; color: #fff; }

/* ---------- Footer ---------- */
.site-footer {
  background: #0F1B14;
  color: #B8C7BE;
  padding: 64px 0 24px;
  margin-top: 80px;
}
.site-footer a { color: #B8C7BE; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 48px; margin-bottom: 40px; }
.footer-brand img, .footer-brand svg { height: 38px; margin-bottom: 14px; }
.footer-brand p { color: #8EA398; font-size: 0.92rem; max-width: 320px; }
.footer-col h5 { font-size: 13px; letter-spacing: 0.02em; color: #fff; margin-bottom: 18px; font-weight: 600; }
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { color: #8EA398; font-size: 0.92rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  padding-top: 24px; border-top: 1px solid #263229;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  font-size: 12.5px; color: #8EA398;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid #263229; border-radius: var(--nd-radius);
  color: #8EA398; transition: .2s;
}
.footer-social a:hover { border-color: var(--nd-green); color: #fff; }
.footer-social svg { width: 16px; height: 16px; }

@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- Download modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(13, 20, 16, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0; transition: opacity .2s ease;
}
.modal-overlay.open { display: flex; opacity: 1; }
.modal {
  width: 100%; max-width: 720px;
  background: var(--nd-surface);
  border: 1px solid var(--nd-border);
  border-radius: var(--nd-radius-lg);
  padding: 36px;
  position: relative;
  box-shadow: var(--nd-shadow-lg);
  transform: scale(0.96); transition: transform .2s ease;
}
.modal-overlay.open .modal { transform: scale(1);   left: 0;
  right: 0;
  top: 0;
  bottom: 0;}
  button { outline: none } 
.modal-close {
  position: absolute; top: 14px; right: 14px;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--nd-border-hi); border-radius: var(--nd-radius);
  color: var(--nd-text-muted); font-size: 20px; transition: .2s;
  background: var(--nd-surface);
}
.modal-close:hover { border-color: var(--nd-red); color: var(--nd-red); }
.modal-head { text-align: center; margin-bottom: 28px; }
.modal-head .eyebrow {
  display: inline-flex; align-items: center;
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.02em;
  color: var(--nd-green-2); background: var(--nd-green-soft);
  padding: 4px 12px; border-radius: 999px; margin-bottom: 12px;
}
.modal-head h3 { font-size: 1.6rem; margin-bottom: 8px; }
.modal-head p { color: var(--nd-text-2); font-size: 0.95rem; }
.qr-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 24px; }
.qr-item {
  text-align: center; padding: 22px 16px;
  background: var(--nd-bg-2); border: 1px solid var(--nd-border);
  border-radius: var(--nd-radius-lg);
}
.qr-item .qr-img {
  width: 180px; height: 180px; margin: 0 auto 14px;
  background: #fff; border-radius: var(--nd-radius);
  border: 1px solid var(--nd-border);
  padding: 8px; display: flex; align-items: center; justify-content: center;
}
.qr-item .qr-img img { width: 100%; height: 100%; }
.qr-item h4 { font-size: 13px; color: var(--nd-text); letter-spacing: 0.01em; margin-bottom: 4px; font-weight: 600; }
.qr-item p { font-size: 12px; color: var(--nd-text-muted); }
.modal-foot { text-align: center; padding-top: 18px; border-top: 1px solid var(--nd-border); }
.modal-foot p { font-size: 12.5px; color: var(--nd-text-muted); }
.modal-foot .platforms { display: flex; justify-content: center; gap: 16px; margin-top: 12px; flex-wrap: wrap; }
.modal-foot .platforms span { font-size: 12px; color: var(--nd-green-2); letter-spacing: 0.01em; font-weight: 600; }

@media (max-width: 560px) {
  .modal { padding: 24px 18px; }
  .qr-grid { grid-template-columns: 1fr; }
  .qr-item .qr-img { width: 160px; height: 160px; }
}

/* ---------- Page header (sub pages) ---------- */
.page-hero {
  position: relative; padding: 64px 0 40px;
  border-bottom: 1px solid var(--nd-border);
  background: linear-gradient(180deg, var(--nd-green-soft), var(--nd-bg));
}
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb {
  font-size: 13px; color: var(--nd-text-muted); margin-bottom: 16px;
  display: flex; gap: 8px; align-items: center;
}
.breadcrumb a { color: var(--nd-text-2); }
.breadcrumb a:hover { color: var(--nd-green-2); }
.breadcrumb svg { width: 12px; height: 12px; opacity: 0.5; }
.page-hero h1 { font-size: clamp(1.9rem, 3.6vw, 2.6rem); margin-bottom: 14px; font-weight: 800; letter-spacing: -0.02em; }
.page-hero p { color: var(--nd-text-2); max-width: 720px; }

/* ---------- Tag / pill ---------- */
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.01em;
  padding: 4px 12px; border-radius: 999px;
  border: 1px solid var(--nd-border-hi); color: var(--nd-text-2);
  background: var(--nd-surface);
}
.tag.tag-green { border-color: transparent; color: var(--nd-green-2); background: var(--nd-green-soft); }
.tag.tag-cyan  { border-color: transparent; color: var(--nd-cyan); background: var(--nd-cyan-soft); }
.tag.tag-amber { border-color: transparent; color: var(--nd-amber); background: #FDF3E3; }

/* ---------- Misc animations ---------- */
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* Reveal on scroll — content is visible by default for SEO/no-JS users.
   JS enhances with a subtle fade-in only when IntersectionObserver is supported. */
.reveal { opacity: 1; transform: translateY(0); transition: opacity .5s ease, transform .5s ease; }
.js-enabled .reveal:not(.visible):not(.no-reveal) {
  opacity: 0;
  transform: translateY(20px);
}
@media (prefers-reduced-motion: reduce) {
  .js-enabled .reveal:not(.visible):not(.no-reveal) { opacity: 1; transform: none; transition: none; }
  .cursor { animation: none !important; }
}
.reveal.visible { opacity: 1 !important; transform: translateY(0) !important; }

/* ---------- Print friendly fallback ---------- */
@media print {
  .modal-overlay { display: none !important; }
}