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

:root {
  /* Palette — light & airy */
  --ink:        #111827;
  --ink-soft:   #374151;
  --muted:      #6B7280;
  --subtle:     #9CA3AF;
  --rule:       #E5E7EB;
  --surface:    #F9FAFB;
  --white:      #FFFFFF;
  --blue:       #2563EB;
  --blue-light: #3B82F6;
  --blue-pale:  #EFF6FF;
  --blue-mid:   #DBEAFE;
  --indigo:     #4F46E5;
  --hero-bg:    #F0F4FF;
  /* Nav dark strip */
  --nav-bg:     #0F172A;

  --radius:     10px;
  --radius-lg:  16px;
  --shadow-sm:  0 1px 4px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow:     0 4px 16px rgba(0,0,0,.07), 0 1px 4px rgba(0,0,0,.04);
  --shadow-lg:  0 12px 40px rgba(0,0,0,.10);

  --font-body:    'Plus Jakarta Sans', sans-serif;
  --font-serif:   'Instrument Serif', serif;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--ink-soft); background: var(--white); line-height: 1.65; overflow-x: hidden; font-weight: 400; font-size: 16px; }

/* ── NAV ───────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: 60px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 5vw;
  background: var(--nav-bg);
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.nav-logo {
  font-family: var(--font-body); font-weight: 600; font-size: 1.05rem;
  color: #fff; text-decoration: none; letter-spacing: -.01em;
  display: flex; align-items: center; gap: 8px;
}
.nav-logo-dot { width: 8px; height: 8px; border-radius: 50%; background: #60A5FA; }
.nav-links { display: flex; gap: 6px; list-style: none; align-items: center; }
.nav-links a {
  color: rgba(255,255,255,.6); text-decoration: none;
  font-size: .83rem; font-weight: 400; padding: 5px 12px; border-radius: 6px;
  transition: all .18s;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-gh {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--blue); color: #fff !important;
  padding: 6px 14px !important; border-radius: 7px !important;
  font-weight: 500 !important; font-size: .83rem !important;
}
.nav-gh:hover { background: var(--blue-light) !important; }
.nav-mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-mobile-toggle span { display: block; width: 20px; height: 1.5px; background: rgba(255,255,255,.7); margin: 4px 0; border-radius: 2px; transition: .2s; }

/* ── HERO ──────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  background: linear-gradient(160deg, #EFF6FF 0%, #F5F3FF 40%, #F0F9FF 100%);
  display: flex; align-items: center;
  padding: 100px 5vw 80px;
  position: relative; overflow: hidden;
}
.hero-blob-1 {
  position: absolute; width: 700px; height: 700px;
  top: -200px; right: -150px;
  background: radial-gradient(circle, rgba(99,102,241,.08) 0%, transparent 65%);
  pointer-events: none;
}
.hero-blob-2 {
  position: absolute; width: 500px; height: 500px;
  bottom: -100px; left: -50px;
  background: radial-gradient(circle, rgba(37,99,235,.07) 0%, transparent 65%);
  pointer-events: none;
}
.hero-layout {
  position: relative; display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center; max-width: 1180px; margin: 0 auto; width: 100%;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--white); border: 1px solid var(--rule);
  border-radius: 999px; padding: 4px 14px 4px 6px;
  font-size: .75rem; font-weight: 500; color: var(--blue);
  margin-bottom: 24px; box-shadow: var(--shadow-sm);
}
.hero-eyebrow-badge {
  background: var(--blue); color: #fff;
  font-size: .68rem; font-weight: 600; letter-spacing: .05em;
  padding: 2px 8px; border-radius: 999px; text-transform: uppercase;
}
.hero-eyebrow a.hero-author {
  color: inherit; text-decoration: none; font-weight: 500;
}
.hero-eyebrow a.hero-author:hover { text-decoration: underline; }
h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 4.2vw, 3.8rem);
  font-weight: 400; /* Instrument Serif — naturally elegant at 400 */
  line-height: 1.1; letter-spacing: -.01em;
  color: var(--ink); margin-bottom: 20px;
}
h1 em { font-style: italic; color: var(--blue); }
.hero-sub {
  font-size: 1.025rem; color: var(--muted); font-weight: 300;
  line-height: 1.75; margin-bottom: 36px; max-width: 460px;
}
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--blue); color: #fff; text-decoration: none;
  padding: 11px 24px; border-radius: var(--radius); font-weight: 500;
  font-size: .9rem; transition: all .2s; border: none; cursor: pointer;
  letter-spacing: -.01em;
}
.btn-primary:hover { background: var(--blue-light); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(37,99,235,.3); }
.btn-outline {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--white); color: var(--ink-soft); text-decoration: none;
  padding: 11px 24px; border-radius: var(--radius); font-weight: 400;
  font-size: .9rem; border: 1px solid var(--rule); transition: all .2s;
  letter-spacing: -.01em;
}
.btn-outline:hover { border-color: #CBD5E1; background: var(--surface); transform: translateY(-1px); }
.hero-stats {
  display: flex; gap: 32px; margin-top: 44px; padding-top: 32px;
  border-top: 1px solid rgba(0,0,0,.08);
}
.stat-val { font-family: var(--font-serif); font-size: 1.6rem; color: var(--ink); }
.stat-label { font-size: .75rem; color: var(--subtle); font-weight: 400; margin-top: 1px; }

/* Hero screenshot */
.hero-shot {
  background: #fff; border: 1px solid var(--rule); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(37,99,235,.06);
  overflow: hidden;
}
.shot-bar {
  background: #F8FAFC; padding: 10px 14px;
  display: flex; align-items: center; gap: 6px;
  border-bottom: 1px solid var(--rule);
}
.shot-dot { width: 9px; height: 9px; border-radius: 50%; }
.shot-dot.r { background: #FC8181; }
.shot-dot.y { background: #F6AD55; }
.shot-dot.g { background: #68D391; }
.shot-url { flex: 1; text-align: center; font-size: .66rem; color: var(--subtle); font-family: 'Courier New', monospace; }
.hero-shot img { display: block; width: 100%; }
.shot-fallback {
  width: 100%; aspect-ratio: 16/10; display: none;
  align-items: center; justify-content: center; flex-direction: column;
  gap: 8px; background: var(--surface); color: var(--subtle); font-size: .82rem;
}
.shot-fallback a { color: var(--blue); text-decoration: none; }

/* ── SECTIONS ──────────────────────────────────────── */
section { padding: 88px 5vw; }
.container { max-width: 1140px; margin: 0 auto; }
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .72rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--blue); margin-bottom: 14px;
}
.section-label::before { content:''; width:16px; height:1px; background:var(--blue); }
h2 {
  font-family: var(--font-serif); font-size: clamp(1.8rem, 2.8vw, 2.6rem);
  font-weight: 400; line-height: 1.18; letter-spacing: -.01em;
  color: var(--ink); margin-bottom: 14px;
}
h2 em { font-style: italic; color: var(--blue); }
.lead { font-size: 1.025rem; color: var(--muted); font-weight: 300; line-height: 1.75; max-width: 560px; }
.center { text-align: center; }
.center .lead { margin: 0 auto; }
.section-divider { border: none; border-top: 1px solid var(--rule); margin: 0; }

/* ── PROBLEM ───────────────────────────────────────── */
#problem { background: var(--surface); }
.problem-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 16px; margin-top: 48px; }
.problem-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 24px;
  border: 1px solid var(--rule); box-shadow: var(--shadow-sm);
  position: relative; overflow: hidden;
}
.problem-card::after { content:''; position:absolute; top:0; left:0; right:0; height:2px; background:linear-gradient(90deg,#FDA4AF,#FCA5A5); }
.p-icon { font-size: 1.4rem; margin-bottom: 12px; }
.problem-card h3 { font-size: .9rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.problem-card p { font-size: .84rem; color: var(--muted); line-height: 1.6; font-weight: 300; }

/* ── FEATURES ──────────────────────────────────────── */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px,1fr)); gap: 16px; margin-top: 48px; }
.feature-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 24px;
  border: 1px solid var(--rule); box-shadow: var(--shadow-sm);
  transition: all .24s;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--blue-mid); }
.f-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--blue-pale); display: flex; align-items: center; justify-content: center;
  font-size: 1.15rem; margin-bottom: 14px;
}
.feature-card h3 { font-size: .9rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.feature-card p { font-size: .84rem; color: var(--muted); line-height: 1.6; font-weight: 300; }

/* ── SCREENSHOTS ───────────────────────────────────── */
#screenshots { background: #F8FAFF; }
.screen-card {
  background: var(--white); border: 1px solid var(--rule); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow); margin-top: 48px;
  transition: box-shadow .3s;
}
.screen-card:hover { box-shadow: var(--shadow-lg); }
.screen-hdr {
  padding: 12px 18px; background: var(--surface); border-bottom: 1px solid var(--rule);
  display: flex; align-items: center; gap: 8px;
}
.screen-hdr .dots { display: flex; gap: 5px; }
.screen-hdr-title { font-size: .78rem; font-weight: 500; color: var(--muted); margin-left: 8px; }
.screen-hdr-tag {
  margin-left: auto; background: var(--blue-pale); color: var(--blue);
  border-radius: 999px; padding: 2px 10px; font-size: .66rem; font-weight: 600;
  letter-spacing: .04em; text-transform: uppercase;
}
.screen-card img { display: block; width: 100%; }
.screen-img-err {
  width: 100%; aspect-ratio: 21/9; display: none;
  align-items: center; justify-content: center; flex-direction: column;
  gap: 8px; background: var(--surface); color: var(--subtle); font-size: .82rem;
}
.screen-img-err a { color: var(--blue); text-decoration: none; }
.screen-feats {
  padding: 16px 20px; display: flex; gap: 18px; flex-wrap: wrap;
  border-top: 1px solid var(--rule);
}
.sf { display: flex; align-items: center; gap: 5px; font-size: .8rem; color: var(--muted); font-weight: 400; }
.sf::before { content: '✓'; color: var(--blue); font-weight: 600; }
.demo-strip {
  margin-top: 24px; background: var(--blue-pale); border: 1px solid var(--blue-mid);
  border-radius: var(--radius-lg); padding: 22px 28px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px;
}
.demo-strip h3 { font-size: .95rem; font-weight: 500; color: var(--ink); margin-bottom: 3px; }
.demo-strip p { font-size: .84rem; color: var(--muted); font-weight: 300; }

/* ── HOW IT WORKS ──────────────────────────────────── */
#how { background: var(--surface); }
.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 16px; margin-top: 48px; }
.step-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 24px;
  border: 1px solid var(--rule); box-shadow: var(--shadow-sm);
}
.step-num {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--blue-pale); display: flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 600; color: var(--blue); margin-bottom: 14px;
}
.step-card h3 { font-size: .9rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.step-card p { font-size: .84rem; color: var(--muted); line-height: 1.6; font-weight: 300; }
.workflow-viz {
  display: flex; align-items: center; margin-top: 36px;
  background: var(--white); border: 1px solid var(--rule); border-radius: var(--radius-lg);
  padding: 20px 24px; overflow-x: auto; gap: 0; box-shadow: var(--shadow-sm);
}
.wf-node { flex: 1; text-align: center; min-width: 80px; }
.wf-bubble {
  width: 36px; height: 36px; border-radius: 50%; margin: 0 auto 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: .7rem; font-weight: 600; color: #fff;
}
.wf-name { font-size: .66rem; color: var(--muted); font-weight: 400; line-height: 1.3; }
.wf-sub { font-size: .58rem; color: var(--subtle); }
.wf-arrow { color: var(--rule); flex-shrink: 0; padding: 0 4px; margin-bottom: 20px; font-size: .9rem; }

/* ── USER GUIDE ────────────────────────────────────── */
#guide {
  background: var(--white);
}
.guide-intro { display: grid; grid-template-columns: 1fr 2fr; gap: 64px; align-items: start; margin-top: 56px; }
.guide-toc {
  position: sticky; top: 80px;
  background: var(--surface); border: 1px solid var(--rule);
  border-radius: var(--radius-lg); padding: 20px 20px;
}
.guide-toc-title { font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.guide-toc-list { list-style: none; }
.guide-toc-list li { border-bottom: 1px solid var(--rule); }
.guide-toc-list li:last-child { border-bottom: none; }
.guide-toc-list a {
  display: block; padding: 9px 0; font-size: .83rem; font-weight: 400;
  color: var(--muted); text-decoration: none; transition: color .18s;
}
.guide-toc-list a:hover { color: var(--blue); }
.guide-toc-list a.active { color: var(--blue); font-weight: 500; }

.guide-content { }
.guide-section { margin-bottom: 64px; }
.guide-section:last-child { margin-bottom: 0; }
.guide-section-title {
  font-family: var(--font-serif); font-size: 1.55rem; font-weight: 400;
  color: var(--ink); margin-bottom: 6px; line-height: 1.25;
}
.guide-section-sub { font-size: .875rem; color: var(--muted); font-weight: 300; margin-bottom: 28px; line-height: 1.65; }
.guide-rule { border: none; border-top: 1px solid var(--rule); margin: 36px 0; }

/* Code blocks in guide */
.code-wrap {
  background: #0F172A; border-radius: var(--radius-lg); overflow: hidden;
  margin: 20px 0; box-shadow: var(--shadow);
}
.code-top {
  padding: 9px 16px; background: rgba(255,255,255,.04);
  border-bottom: 1px solid rgba(255,255,255,.07);
  display: flex; align-items: center; justify-content: space-between;
}
.code-filename { font-size: .72rem; color: rgba(255,255,255,.4); font-family: 'Courier New', monospace; }
.code-lang { font-size: .66rem; color: rgba(255,255,255,.25); text-transform: uppercase; letter-spacing: .08em; }
.code-wrap pre {
  padding: 18px 20px; font-family: 'Courier New', monospace;
  font-size: .82rem; line-height: 1.8; color: #CBD5E1; overflow-x: auto; white-space: pre;
}
.ck { color: #93C5FD; }   /* key */
.cs { color: #A5F3FC; }   /* string */
.cv { color: #FCA5A5; }   /* boolean/value */
.cm { color: #475569; }   /* comment */
.cc { color: #86EFAC; }   /* cyan highlight */

/* Callout boxes */
.callout {
  border-radius: var(--radius); padding: 16px 18px; margin: 20px 0;
  display: flex; gap: 12px; align-items: flex-start;
  font-size: .875rem; line-height: 1.6;
}
.callout-icon { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }
.callout-body h4 { font-size: .85rem; font-weight: 600; margin-bottom: 3px; }
.callout-body p { font-weight: 300; }
.callout.tip { background: #F0FDF4; border: 1px solid #BBF7D0; color: #166534; }
.callout.info { background: var(--blue-pale); border: 1px solid var(--blue-mid); color: #1E40AF; }
.callout.warn { background: #FFFBEB; border: 1px solid #FDE68A; color: #92400E; }

/* Guide step list */
.guide-steps { list-style: none; margin: 16px 0; }
.guide-steps li {
  display: flex; gap: 14px; padding: 14px 0;
  border-bottom: 1px solid var(--rule); align-items: flex-start;
}
.guide-steps li:last-child { border-bottom: none; }
.gs-num {
  width: 24px; height: 24px; flex-shrink: 0;
  background: var(--blue-pale); border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: .72rem; font-weight: 600; color: var(--blue);
}
.gs-body { flex: 1; }
.gs-title { font-size: .875rem; font-weight: 600; color: var(--ink); margin-bottom: 3px; }
.gs-desc { font-size: .84rem; color: var(--muted); font-weight: 300; line-height: 1.6; }
code.inline { font-family: 'Courier New', monospace; font-size: .82em; background: #F1F5F9; color: var(--blue); padding: 1px 6px; border-radius: 4px; }

/* Feature table */
.guide-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: .84rem; }
.guide-table th { background: var(--surface); text-align: left; padding: 10px 14px; font-weight: 600; color: var(--ink); border-bottom: 2px solid var(--rule); font-size: .78rem; }
.guide-table td { padding: 10px 14px; border-bottom: 1px solid var(--rule); color: var(--ink-soft); font-weight: 300; }
.guide-table tr:last-child td { border-bottom: none; }
.guide-table code { font-family: 'Courier New', monospace; font-size: .82em; background: #F1F5F9; color: var(--blue); padding: 1px 5px; border-radius: 4px; }
.tag-req { background: #FEF2F2; color: #DC2626; font-size: .68rem; padding: 2px 7px; border-radius: 4px; font-weight: 600; }
.tag-opt { background: #F0FDF4; color: #16A34A; font-size: .68rem; padding: 2px 7px; border-radius: 4px; font-weight: 600; }

/* Guide 2-col layout for short items */
.guide-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 16px 0; }
@media(max-width:680px){ .guide-2col { grid-template-columns: 1fr; } }
.mini-card {
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 16px; font-size: .84rem;
}
.mini-card h4 { font-size: .84rem; font-weight: 600; color: var(--ink); margin-bottom: 4px; display: flex; align-items: center; gap: 7px; }
.mini-card p { color: var(--muted); font-weight: 300; line-height: 1.55; }

/* ── USE CASES ─────────────────────────────────────── */
#usecases { background: var(--surface); }
.uc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px,1fr)); gap: 16px; margin-top: 48px; }
.uc-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 24px;
  border: 1px solid var(--rule); box-shadow: var(--shadow-sm);
  display: flex; gap: 16px; transition: all .24s;
}
.uc-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.uc-icon { width: 44px; height: 44px; flex-shrink: 0; border-radius: var(--radius); background: var(--blue-pale); display: flex; align-items: center; justify-content: center; font-size: 1.25rem; }
.uc-card h3 { font-size: .9rem; font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.uc-card p { font-size: .84rem; color: var(--muted); line-height: 1.6; font-weight: 300; }

/* ── INSTALLATION ──────────────────────────────────── */
#installation { background: var(--white); }
.install-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 16px; margin-top: 48px; }
.install-card {
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius-lg);
  padding: 24px; transition: border-color .2s;
}
.install-card:hover { border-color: var(--blue-mid); }
.install-card h3 { font-size: .9rem; font-weight: 600; color: var(--ink); margin-bottom: 14px; }
.code-block {
  background: #0F172A; border-radius: var(--radius); padding: 14px 16px;
  font-family: 'Courier New', monospace; font-size: .79rem; color: #94A3B8;
  line-height: 1.75; margin: 12px 0;
}
.code-block .cmd { color: #CBD5E1; }
.code-block .cmt { color: #475569; }
.ist { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 10px; font-size: .84rem; color: var(--muted); }
.ist-n {
  width: 20px; height: 20px; flex-shrink: 0;
  background: var(--blue-pale); border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  font-size: .66rem; font-weight: 600; color: var(--blue);
}

/* ── FAQ ───────────────────────────────────────────── */
#faq { background: var(--surface); }
.faq-list { margin-top: 48px; max-width: 720px; }
.faq-item { background: var(--white); border-radius: var(--radius); border: 1px solid var(--rule); margin-bottom: 8px; overflow: hidden; }
.faq-q {
  width: 100%; background: none; border: none; padding: 16px 20px;
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; text-align: left; font-family: var(--font-body);
  font-size: .875rem; font-weight: 500; color: var(--ink); transition: background .18s;
}
.faq-q:hover { background: var(--surface); }
.faq-ch { transition: transform .26s; font-style: normal; color: var(--muted); }
.faq-item.open .faq-ch { transform: rotate(180deg); }
.faq-a { padding: 0 20px; max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .18s; font-size: .875rem; color: var(--muted); line-height: 1.7; font-weight: 300; }
.faq-item.open .faq-a { max-height: 220px; padding: 0 20px 16px; }

/* ── CTA ───────────────────────────────────────────── */
#cta {
  background: linear-gradient(135deg, #1E3A8A 0%, #1D4ED8 50%, #2563EB 100%);
  text-align: center; color: #fff; padding: 88px 5vw;
  position: relative; overflow: hidden;
}
#cta::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
}
#cta h2 { color: #fff; position: relative; font-size: clamp(1.8rem,3vw,2.8rem); }
#cta .lead { color: rgba(255,255,255,.65); margin: 0 auto 36px; position: relative; font-weight: 300; }
.cta-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; position: relative; }
.btn-white {
  display: inline-flex; align-items: center; gap: 7px;
  background: #fff; color: var(--blue); text-decoration: none;
  padding: 11px 24px; border-radius: var(--radius); font-weight: 500; font-size: .9rem;
  transition: all .2s;
}
.btn-white:hover { background: #EFF6FF; transform: translateY(-1px); }
.btn-ghost-white {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(255,255,255,.1); color: #fff; text-decoration: none;
  padding: 11px 24px; border-radius: var(--radius); font-weight: 400; font-size: .9rem;
  border: 1px solid rgba(255,255,255,.2); transition: all .2s;
}
.btn-ghost-white:hover { background: rgba(255,255,255,.18); transform: translateY(-1px); }

/* ── FOOTER ────────────────────────────────────────── */
footer { background: var(--nav-bg); padding: 44px 5vw 28px; }
.footer-inner { max-width: 1140px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-logo { font-weight: 500; font-size: 1rem; color: #fff; display: flex; align-items: center; gap: 7px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: rgba(255,255,255,.4); text-decoration: none; font-size: .82rem; transition: color .18s; }
.footer-links a:hover { color: rgba(255,255,255,.75); }
.footer-copy { font-size: .75rem; color: rgba(255,255,255,.22); width: 100%; text-align: center; margin-top: 20px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.06); font-weight: 300; }
.footer-copy a { color: rgba(255,255,255,.5); text-decoration: none; }
.footer-copy a:hover { color: rgba(255,255,255,.85); text-decoration: underline; }

/* ── RESPONSIVE ────────────────────────────────────── */
@media(max-width:980px) {
  .hero-layout { grid-template-columns: 1fr; }
  .hero-shot { display: none; }
  .guide-intro { grid-template-columns: 1fr; }
  .guide-toc { position: static; }
  nav .nav-links li:not(:last-child) { display: none; }
}
@media(max-width:600px) {
  section { padding: 60px 5vw; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
}

/* ── ANIMATIONS ────────────────────────────────────── */
.fade-in { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.fade-in.visible { opacity: 1; transform: none; }