:root {
  --ds-orange: #FF6B35;
  --ds-orange-dark: #E85321;
  --ds-purple: #6C4CE0;
  --ds-purple-dark: #4F35B0;
  --ds-ink: #1A1730;
  --ds-ink-soft: #4A4560;
  --ds-bg: #FAFAFC;
  --ds-card: #FFFFFF;
  --ds-border: #ECEAF5;
  --ds-success: #1FA97C;
  --ds-danger: #E24B4B;
  --ds-radius: 14px;
  --ds-shadow: 0 8px 24px rgba(26, 23, 48, 0.08);
  --ds-gradient: linear-gradient(135deg, var(--ds-orange) 0%, var(--ds-purple) 100%);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Arial, sans-serif;
  color: var(--ds-ink);
  background: var(--ds-bg);
  line-height: 1.6;
}

a { color: var(--ds-purple); text-decoration: none; }
a:hover { color: var(--ds-purple-dark); }

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

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 252, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--ds-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.main-nav a {
  color: var(--ds-ink-soft);
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
}

.main-nav a:hover { color: var(--ds-ink); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

@media (max-width: 980px) {
  .header-actions .btn-secondary { display: none; }
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background: var(--ds-gradient);
  color: #fff;
  box-shadow: 0 6px 18px rgba(255, 107, 53, 0.28);
}

.btn-primary:hover { filter: brightness(1.05); color: #fff; }

.btn-secondary {
  background: #fff;
  color: var(--ds-ink);
  border: 2px solid var(--ds-border);
}

.btn-secondary:hover { border-color: var(--ds-purple); color: var(--ds-purple); }

.btn-block { width: 100%; }

/* Hero */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  background:
    radial-gradient(circle at 15% 20%, rgba(255,107,53,0.10), transparent 45%),
    radial-gradient(circle at 85% 15%, rgba(108,76,224,0.12), transparent 45%);
}

.eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: #FFF1EA;
  color: var(--ds-orange-dark);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.3px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.12;
  margin: 0 0 18px;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.hero h1 span {
  background: var(--ds-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: 18px;
  color: var(--ds-ink-soft);
  max-width: 620px;
  margin: 0 auto 34px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections */
.section {
  padding: 72px 0;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 46px;
}

.section-head h2 {
  font-size: clamp(26px, 4vw, 36px);
  margin: 0 0 12px;
}

.section-head p {
  color: var(--ds-ink-soft);
  font-size: 16px;
  margin: 0;
}

.section-alt { background: #F5F3FC; }

/* Grid cards */
.grid {
  display: grid;
  gap: 22px;
}

.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 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-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--ds-card);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius);
  padding: 28px;
  box-shadow: var(--ds-shadow);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--ds-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  margin-bottom: 18px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 19px;
}

.card p {
  margin: 0;
  color: var(--ds-ink-soft);
  font-size: 15px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.tool-card .tool-link {
  margin-top: auto;
  font-weight: 700;
  font-size: 14px;
  color: var(--ds-orange-dark);
}

/* Stats row */
.stats-row {
  display: flex;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
  margin-top: 44px;
}

.stat { text-align: center; }
.stat .num {
  font-size: 32px;
  font-weight: 800;
  background: var(--ds-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat .label { font-size: 14px; color: var(--ds-ink-soft); }

/* Form */
.form-card {
  background: var(--ds-card);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius);
  box-shadow: var(--ds-shadow);
  padding: 40px;
  max-width: 640px;
  margin: 0 auto;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
}

.field { margin-bottom: 16px; }

.field label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
}

.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1.5px solid var(--ds-border);
  font-size: 15px;
  font-family: inherit;
  background: #fff;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--ds-purple);
}

.form-note {
  font-size: 13px;
  color: var(--ds-ink-soft);
  margin-top: 14px;
  text-align: center;
}

.alert {
  padding: 14px 18px;
  border-radius: 10px;
  font-size: 14px;
  margin-bottom: 20px;
}

.alert-success { background: #E9F9F2; color: #147A55; border: 1px solid #BEEBD9; }
.alert-error { background: #FDECEC; color: #B93030; border: 1px solid #F6C6C6; }

/* Blog post body */
.blog-body { font-size: 17px; line-height: 1.75; color: var(--ds-ink); }
.blog-body h2 { font-size: 26px; margin: 36px 0 14px; }
.blog-body h3 { font-size: 21px; margin: 28px 0 12px; }
.blog-body p { margin: 0 0 18px; }
.blog-body ul, .blog-body ol { margin: 0 0 18px; padding-left: 24px; }
.blog-body li { margin-bottom: 8px; }
.blog-body a { text-decoration: underline; }
.blog-body img { border-radius: 12px; margin: 20px 0; }
.blog-body blockquote {
  margin: 20px 0;
  padding: 14px 20px;
  border-left: 4px solid var(--ds-purple);
  background: #F5F3FC;
  border-radius: 0 10px 10px 0;
  color: var(--ds-ink-soft);
}
.blog-body code {
  background: #F5F3FC;
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 15px;
}

/* Footer */
.site-footer {
  background: var(--ds-ink);
  color: #C9C6DB;
  padding: 52px 0 28px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

@media (max-width: 780px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

.footer-grid h4 {
  color: #fff;
  font-size: 14px;
  margin: 0 0 14px;
}

.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: #C9C6DB; font-size: 14px; }
.footer-links a:hover { color: #fff; }

.footer-bottom {
  padding-top: 24px;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* Tool pages */
.tool-page-head {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 30px;
}

.tool-result {
  margin-top: 24px;
  padding: 24px;
  border-radius: var(--ds-radius);
  background: #F5F3FC;
  border: 1px solid var(--ds-border);
}

.score-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  font-weight: 800;
  font-size: 20px;
  color: #fff;
}

.score-good { background: var(--ds-success); }
.score-mid { background: var(--ds-orange); }
.score-bad { background: var(--ds-danger); }

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.tag {
  background: #fff;
  border: 1px solid var(--ds-border);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
}

.issue-row {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--ds-border);
  font-size: 14px;
}
.issue-row:last-child { border-bottom: none; }

.badge-ok { color: var(--ds-success); font-weight: 700; }
.badge-warn { color: var(--ds-orange-dark); font-weight: 700; }
.badge-bad { color: var(--ds-danger); font-weight: 700; }

.mobile-nav-toggle { display: none; }

@media (max-width: 780px) {
  .main-nav { display: none; }
  .mobile-nav-toggle { display: inline-block; }
}