:root {
  --ink: #0d1b2a;
  --ink-soft: #3d4d5c;
  --muted: #6b7a89;
  --line: #e6ebf1;
  --bg: #ffffff;
  --bg-soft: #f6f9fc;
  --brand: #1a5cff;
  --brand-dark: #0f3fbf;
  --accent: #0abf8f;
  --warn: #b23b3b;
  --shadow: 0 10px 40px rgba(13, 27, 42, 0.08);
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { overflow-wrap: break-word; }
h1, h2, h3 { overflow-wrap: break-word; hyphens: auto; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
a { color: var(--brand); text-decoration: none; }

/* NAV */
nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 18px; letter-spacing: -0.02em; }
.logo .dot { width: 12px; height: 12px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 4px rgba(26,92,255,0.15); }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a.text { font-size: 15px; font-weight: 600; color: var(--ink-soft); }
.nav-links a.text:hover { color: var(--ink); }
.nav-cta { font-size: 14px; font-weight: 600; padding: 9px 16px; border-radius: 9px; background: var(--ink); color: #fff; }
/* Hamburger (checkbox-hack, no JS) — hidden on desktop */
.nav-burger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; margin: -8px; }
.nav-burger span { display: block; width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .2s, opacity .2s; }

/* HERO */
.hero { padding: 72px 0 56px; background: radial-gradient(1200px 480px at 50% -10%, #eef4ff 0%, #ffffff 60%); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--brand-dark);
  background: #eaf1ff; border: 1px solid #d4e2ff; padding: 6px 13px; border-radius: 999px; margin-bottom: 22px;
}
h1 {
  font-size: clamp(34px, 5vw, 56px); line-height: 1.06; letter-spacing: -0.03em; font-weight: 800;
  max-width: 900px; margin: 0 auto 20px; text-align: center;
}
.sub {
  font-size: clamp(17px, 2.2vw, 21px); color: var(--ink-soft); max-width: 700px;
  margin: 0 auto 32px; text-align: center;
}
.hero-cta-row { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.btn-primary {
  display: inline-block; background: var(--brand); color: #fff; font-weight: 700; font-size: 17px;
  padding: 16px 30px; border-radius: 11px; border: none; cursor: pointer; transition: transform .12s ease, box-shadow .12s ease;
  box-shadow: 0 8px 22px rgba(26,92,255,0.28);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(26,92,255,0.34); }
.proof { font-size: 14px; color: var(--muted); }
.proof strong { color: var(--ink); }
.avatars { display: inline-flex; margin-right: 8px; vertical-align: middle; }
.avatars span {
  width: 24px; height: 24px; border-radius: 50%; border: 2px solid #fff; margin-left: -8px;
  background: linear-gradient(135deg, #1a5cff, #0abf8f); display: inline-block;
}
.logos { margin-top: 46px; text-align: center; }
.logos p { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
.logos-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 34px; opacity: .7; font-weight: 700; color: var(--ink-soft); font-size: 15px; }

/* SECTIONS */
section { padding: 76px 0; }
.section-tag { text-align: center; font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--brand); margin-bottom: 12px; }
h2 { font-size: clamp(26px, 3.6vw, 38px); line-height: 1.15; letter-spacing: -0.025em; text-align: center; max-width: 760px; margin: 0 auto 16px; font-weight: 800; }
.lede { text-align: center; color: var(--ink-soft); max-width: 680px; margin: 0 auto 48px; font-size: 18px; }

/* PROBLEM */
.problem { background: var(--bg-soft); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.card .ba { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.card .before { color: var(--warn); }
.card .after { color: var(--accent); }
.card h3 { font-size: 18px; margin: 10px 0 8px; letter-spacing: -0.01em; }
.card p { font-size: 15px; color: var(--ink-soft); }
.card .arrow { color: var(--muted); margin: 14px 0; font-size: 13px; font-weight: 600; }

/* VALUE STACK */
.stack { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.pillar { display: flex; gap: 16px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.pillar .icon { flex: none; width: 44px; height: 44px; border-radius: 11px; background: #eaf1ff; display: grid; place-items: center; font-size: 22px; }
.pillar h3 { font-size: 18px; margin-bottom: 6px; letter-spacing: -0.01em; }
.pillar p { font-size: 15px; color: var(--ink-soft); }
.pillar .metric { display: block; margin-top: 8px; font-size: 13px; font-weight: 700; color: var(--brand-dark); }

/* CAPTURE */
.capture { background: linear-gradient(160deg, #0d1b2a 0%, #12325e 100%); color: #fff; }
.capture .card-inner { max-width: 640px; margin: 0 auto; text-align: center; }
.capture .kit { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: #9dc0ff; background: rgba(26,92,255,0.18); padding: 6px 14px; border-radius: 999px; margin-bottom: 18px; }
.capture h2 { color: #fff; }
.capture .incentive { color: #c3d0de; font-size: 17px; margin: 14px auto 28px; max-width: 580px; }
form.signup { display: flex; gap: 10px; max-width: 480px; margin: 0 auto; }
form.signup input[type=email] {
  flex: 1; padding: 15px 16px; border-radius: 10px; border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08); color: #fff; font-size: 16px; font-family: inherit;
}
form.signup input::placeholder { color: #9fb0c2; }
form.signup input[type=email]:focus { outline: 2px solid var(--brand); background: rgba(255,255,255,0.14); }
form.signup button {
  background: var(--brand); color: #fff; border: none; font-weight: 700; font-size: 16px;
  padding: 15px 24px; border-radius: 10px; cursor: pointer; white-space: nowrap; transition: background .12s;
}
form.signup button:hover { background: #3d78ff; }
.fineprint { font-size: 13px; color: #8fa3b6; margin-top: 16px; }
.form-msg { margin-top: 16px; font-size: 15px; font-weight: 600; min-height: 22px; }
.form-msg.ok { color: #5fe0b8; }
.form-msg.err { color: #ff9d9d; }

/* FOOTER */
footer { padding: 44px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.foot-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }

/* ===== BLOG INDEX ===== */
.blog-head { padding: 64px 0 24px; background: radial-gradient(1000px 400px at 50% -20%, #eef4ff 0%, #ffffff 60%); text-align: center; }
.blog-head h1 { font-size: clamp(30px, 4.4vw, 46px); margin-bottom: 14px; }
.blog-head p { color: var(--ink-soft); font-size: 18px; max-width: 620px; margin: 0 auto; }
.blog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; padding: 40px 0 80px; }
.post-card {
  display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; background: #fff; transition: transform .12s ease, box-shadow .12s ease;
}
.post-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.post-card .cat { font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--brand); }
.post-card h2 { font-size: 21px; text-align: left; margin: 10px 0 10px; max-width: none; line-height: 1.25; }
.post-card p { font-size: 15px; color: var(--ink-soft); flex: 1; }
.post-card .read { margin-top: 16px; font-weight: 600; font-size: 14px; }

/* ===== ARTICLE ===== */
.article { max-width: 720px; margin: 0 auto; padding: 40px 24px 80px; }
.breadcrumb { font-size: 14px; color: var(--muted); margin-bottom: 22px; }
.article .cat { font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--brand); }
.article h1 { text-align: left; font-size: clamp(28px, 4vw, 42px); margin: 12px 0 18px; max-width: none; }
.article .meta { color: var(--muted); font-size: 14px; margin-bottom: 34px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.article h2 { text-align: left; font-size: clamp(22px, 3vw, 28px); max-width: none; margin: 40px 0 14px; }
.article p { font-size: 17px; color: var(--ink-soft); margin-bottom: 18px; }
.article ul { margin: 0 0 18px 22px; }
.article li { font-size: 17px; color: var(--ink-soft); margin-bottom: 8px; }
.article strong { color: var(--ink); }
.cta-box {
  background: var(--bg-soft); border: 1px solid var(--line); border-left: 4px solid var(--brand);
  border-radius: 12px; padding: 22px 24px; margin: 30px 0;
}
.cta-box p { margin-bottom: 12px; font-size: 16px; }
.cta-box a.btn {
  display: inline-block; background: var(--brand); color: #fff; font-weight: 700; font-size: 15px;
  padding: 11px 20px; border-radius: 9px;
}
.cta-box a.btn:hover { background: var(--brand-dark); }
.article-intro { font-size: 19px; color: var(--ink); margin-bottom: 22px; }
.quick-answer {
  position: relative; background: #eef4ff; border: 1px solid #d4e2ff; border-left: 4px solid var(--brand);
  border-radius: 12px; padding: 20px 24px; margin: 0 0 34px; font-size: 17px; color: var(--ink); line-height: 1.55;
}
.quick-answer .qa-label {
  display: block; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--brand-dark); margin-bottom: 8px;
}
.faq { margin-top: 46px; padding-top: 30px; border-top: 1px solid var(--line); }
.faq h2 { text-align: left; font-size: clamp(22px, 3vw, 28px); max-width: none; margin-bottom: 18px; }
.faq-item { border: 1px solid var(--line); border-radius: 10px; margin-bottom: 10px; background: #fff; overflow: hidden; }
.faq-item summary {
  cursor: pointer; padding: 16px 20px; font-weight: 600; font-size: 16px; color: var(--ink);
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; color: var(--brand); font-size: 22px; font-weight: 400; flex: none; }
.faq-item[open] summary::after { content: '−'; }
.faq-item[open] summary { border-bottom: 1px solid var(--line); }
.faq-item p { padding: 16px 20px; font-size: 16px; color: var(--ink-soft); margin: 0; }

.article-foot { margin-top: 50px; padding-top: 30px; border-top: 1px solid var(--line); }

/* ===== ACCOUNT / AUTH PAGE ===== */
.auth-page { max-width: 460px; margin: 0 auto; padding: 50px 24px 80px; }
.auth-page h1 { text-align: center; font-size: clamp(28px, 4vw, 38px); margin-bottom: 10px; max-width: none; }
.auth-intro { text-align: center; color: var(--ink-soft); margin-bottom: 28px; }
.auth-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; background: #fff; box-shadow: var(--shadow); }
.auth-loading { text-align: center; color: var(--muted); padding: 20px 0; }
.auth-tabs { display: flex; gap: 6px; background: var(--bg-soft); border-radius: 10px; padding: 5px; margin-bottom: 22px; }
.auth-tabs button { flex: 1; border: none; background: transparent; padding: 10px; border-radius: 8px; font-weight: 600; font-size: 15px; color: var(--ink-soft); cursor: pointer; font-family: inherit; }
.auth-tabs button.active { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(13,27,42,0.1); }
#auth-form { display: flex; flex-direction: column; gap: 12px; }
#auth-form input { padding: 13px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 16px; font-family: inherit; }
#auth-form input:focus { outline: 2px solid var(--brand); border-color: var(--brand); }
.auth-divider { display: flex; align-items: center; text-align: center; color: var(--muted); font-size: 13px; margin: 18px 0; }
.auth-divider::before, .auth-divider::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.auth-divider span { padding: 0 12px; }
.google-btn { width: 100%; display: flex; align-items: center; justify-content: center; gap: 10px; padding: 13px; border: 1px solid var(--line); border-radius: 10px; background: #fff; font-weight: 600; font-size: 15px; color: var(--ink); cursor: pointer; font-family: inherit; transition: background .12s; }
.google-btn:hover { background: var(--bg-soft); }
.google-btn:disabled, #auth-form input:disabled, #auth-form button:disabled { opacity: .55; cursor: not-allowed; }
.auth-msg { margin-top: 14px; font-size: 14px; font-weight: 500; min-height: 20px; text-align: center; }
.auth-msg.ok { color: var(--ink-soft); }
.auth-msg.err { color: var(--warn); }
#auth-signedin { text-align: center; }
.auth-check { width: 54px; height: 54px; margin: 0 auto 14px; border-radius: 50%; background: #edf9f3; color: var(--accent); display: grid; place-items: center; font-size: 26px; font-weight: 800; }
#auth-signedin p { margin-bottom: 18px; font-size: 17px; }

/* ===== LEGAL PAGES ===== */
.legal h2 { text-align: left; font-size: clamp(20px, 2.6vw, 26px); max-width: none; margin: 36px 0 12px; }
.legal h3 { font-size: 18px; margin: 26px 0 10px; letter-spacing: -0.01em; }
.legal p, .legal li { font-size: 16px; }
.legal ul { margin: 0 0 18px 22px; }
.legal-source { color: var(--muted); font-size: 14px; margin-top: 30px; }

/* ===== INTERLINKING (related articles + tools inside an article) ===== */
.related-block { margin-top: 44px; padding-top: 30px; border-top: 1px solid var(--line); }
.related-block h3 { font-size: 15px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 16px; }
.related-list { display: grid; gap: 10px; margin-bottom: 30px; }
.related-list a {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 14px 18px; border: 1px solid var(--line); border-radius: 10px; background: #fff;
  font-weight: 600; color: var(--ink); transition: border-color .12s, background .12s;
}
.related-list a:hover { border-color: var(--brand); background: var(--bg-soft); }
.related-list a .arw { color: var(--brand); flex: none; }
.tool-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.tool-links a {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px;
  border: 1px solid #d4e2ff; border-radius: 10px; background: #f3f7ff; color: var(--ink); font-weight: 600;
}
.tool-links a:hover { background: #e9f1ff; }
.tool-links a .ic { font-size: 20px; flex: none; }
.tool-links a small { display: block; font-weight: 500; color: var(--muted); font-size: 12px; }

/* ===== TOOLS INDEX / SHOWCASE ===== */
.tools-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.tool-card {
  display: flex; flex-direction: column; gap: 6px; padding: 26px; border: 1px solid var(--line);
  border-radius: var(--radius); background: #fff; transition: transform .12s, box-shadow .12s;
}
.tool-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.tool-card .ic { font-size: 30px; }
.tool-card h3 { font-size: 19px; letter-spacing: -0.01em; }
.tool-card p { font-size: 15px; color: var(--ink-soft); flex: 1; }
.tool-card .go { margin-top: 12px; font-weight: 700; font-size: 14px; color: var(--brand); }
.tool-card.flag { border: 2px solid var(--brand); background: linear-gradient(180deg, #f4f8ff, #fff); }
.tool-card .flagtag { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: #fff; background: var(--brand); padding: 3px 9px; border-radius: 999px; align-self: flex-start; }

/* ===== TOOL APP (interactive) ===== */
.tool-app { max-width: 720px; margin: 0 auto; padding: 30px 24px 80px; }
.tool-app .breadcrumb { font-size: 14px; color: var(--muted); margin-bottom: 20px; }
.tool-app h1 { text-align: left; font-size: clamp(28px, 4vw, 40px); margin-bottom: 12px; max-width: none; }
.tool-app .intro { font-size: 18px; color: var(--ink-soft); margin-bottom: 30px; }
.tool-panel { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: #fff; box-shadow: var(--shadow); }
.q { margin-bottom: 22px; }
.q:last-child { margin-bottom: 0; }
.q .label { font-weight: 600; font-size: 16px; margin-bottom: 10px; display: block; }
.opts { display: flex; flex-wrap: wrap; gap: 8px; }
.opts label {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 15px; border: 1px solid var(--line);
  border-radius: 999px; cursor: pointer; font-size: 15px; font-weight: 500; transition: all .12s; background: #fff;
}
.opts label:hover { border-color: var(--brand); }
.opts input { accus-color: var(--brand); }
.opts input { accent-color: var(--brand); }
.opts input:checked + span { color: var(--brand-dark); font-weight: 700; }
.opts label:has(input:checked) { border-color: var(--brand); background: #eef4ff; }
.checklist { display: grid; gap: 4px; }
.checklist label {
  display: flex; align-items: flex-start; gap: 12px; padding: 12px 14px; border-radius: 10px; cursor: pointer;
  font-size: 15px; border: 1px solid transparent; transition: background .12s;
}
.checklist label:hover { background: var(--bg-soft); }
.checklist label:has(input:checked) { background: #eef7f2; }
.checklist input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--accent); flex: none; }
.tool-app input[type=date], .tool-app input[type=number], .tool-app select {
  width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 16px;
  font-family: inherit; color: var(--ink); background: #fff;
}
.tool-app input:focus, .tool-app select:focus { outline: 2px solid var(--brand); border-color: var(--brand); }
.tool-btn {
  margin-top: 24px; width: 100%; background: var(--brand); color: #fff; border: none; font-weight: 700;
  font-size: 16px; padding: 15px; border-radius: 11px; cursor: pointer; transition: background .12s;
}
.tool-btn:hover { background: var(--brand-dark); }
.tool-result { margin-top: 26px; display: none; }
.tool-result.show { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.result-card { border-radius: var(--radius); padding: 26px; border: 1px solid var(--line); }
.result-card.low { background: #edf9f3; border-color: #bfe6d3; }
.result-card.medium { background: #fff7ea; border-color: #f0dcae; }
.result-card.high { background: #fdecec; border-color: #f2c3c3; }
.result-card.neutral { background: var(--bg-soft); }
.result-badge { display: inline-block; font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; padding: 5px 12px; border-radius: 999px; margin-bottom: 12px; color: #fff; }
.result-badge.low { background: var(--accent); }
.result-badge.medium { background: #d9950a; }
.result-badge.high { background: var(--warn); }
.result-badge.neutral { background: var(--muted); }
.result-card h3 { font-size: 22px; margin-bottom: 6px; }
.result-card .big { font-size: 40px; font-weight: 800; letter-spacing: -0.02em; margin: 6px 0; }
.result-card ul { margin: 14px 0 0 20px; }
.result-card li { font-size: 15px; margin-bottom: 7px; }
.meter { height: 12px; background: #e6ebf1; border-radius: 999px; overflow: hidden; margin: 14px 0; }
.meter > span { display: block; height: 100%; border-radius: 999px; transition: width .5s ease; }
.date-out { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 6px; }
.date-out .d { flex: 1; min-width: 200px; border: 1px solid var(--line); border-radius: 12px; padding: 18px; background: #fff; }
.date-out .d .lbl { font-size: 13px; color: var(--muted); font-weight: 600; }
.date-out .d .val { font-size: 24px; font-weight: 800; margin: 4px 0; }
.date-out .d a { font-size: 14px; font-weight: 600; }
.tool-note { font-size: 13px; color: var(--muted); margin-top: 18px; }

@media (max-width: 780px) {
  .cards, .stack, .blog-grid, .tools-grid, .tool-links { grid-template-columns: 1fr; }
  form.signup { flex-direction: column; }

  /* Collapsible mobile nav */
  .nav-inner { position: relative; }
  .nav-burger { display: flex; }
  .nav-links {
    display: none; position: absolute; top: calc(100% + 1px); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 6px 24px 16px; box-shadow: var(--shadow);
  }
  .nav-toggle:checked ~ .nav-links { display: flex; }
  .nav-links a.text { display: block; padding: 14px 2px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav-links a.nav-cta { text-align: center; margin-top: 12px; padding: 14px; font-size: 15px; }
  /* burger → X when open */
  .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Tighter vertical rhythm on phones */
  section { padding: 48px 0; }
  .hero { padding: 44px 0 40px; }
  .logos { margin-top: 32px; }
  .lede { margin-bottom: 34px; }
}

@media (max-width: 480px) {
  .wrap { padding: 0 18px; }
  .btn-primary { width: 100%; }
  .card, .pillar, .post-card, .tool-card, .auth-card, .tool-panel { padding: 20px; }
  .logos-row { gap: 20px; row-gap: 12px; }
  .article, .tool-app, .auth-page { padding-left: 18px; padding-right: 18px; }
}