*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #faf8f5; --bg-card: #ffffff; --bg-muted: #f5f0eb; --border: #e0dbd5;
  --text: #111111; --text-muted: #666666; --text-light: #999999;
  --accent: #111111; --accent-fg: #ffffff;
  --radius-lg: 12px; --radius-md: 8px; --radius-sm: 5px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --max-w: 860px; --max-w-post: 680px;
}
html { scroll-behavior: smooth; }
body { font-family: var(--font); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
a:hover { opacity: 0.7; }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.site-header { border-bottom: 1px solid var(--border); background: var(--bg-card); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.logo { font-size: 15px; font-weight: 600; text-decoration: none; color: var(--text); letter-spacing: -0.01em; }
.site-header nav { display: flex; gap: 28px; }
.site-header nav a { font-size: 14px; font-weight: 500; text-decoration: none; color: var(--text-muted); transition: color 0.15s; }
.site-header nav a:hover { color: var(--text); opacity: 1; }
.hero { padding: 64px 0 48px; text-align: center; }
.hero--small { padding: 48px 0 36px; }
.hero h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 14px; }
.hero-sub { font-size: 1.05rem; color: var(--text-muted); max-width: 560px; margin: 0 auto; line-height: 1.6; }
.tool-section { padding: 0 0 64px; }
.tool-wrap { max-width: 560px; margin: 0 auto; padding: 0 24px; }
#sg-card { border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; background: var(--bg-card); }
#sg-head { background: var(--bg-muted); border-bottom: 1px solid var(--border); padding: 13px 20px; font-size: 14px; font-weight: 600; color: var(--text); }
#sg-body { padding: 24px 20px; display: flex; flex-direction: column; gap: 18px; }
.sg-lbl { font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-light); margin-bottom: 5px; }
#sg-name-val { font-size: 21px; font-weight: 600; color: var(--text); transition: opacity 0.15s; }
.sg-val { font-size: 14.5px; color: var(--text); line-height: 1.5; transition: opacity 0.15s; }
.sg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.sg-ruled { border-top: 1px solid var(--border); padding-top: 18px; }
.sg-btns { display: flex; gap: 8px; }
.sg-btn-gen { flex: 1; padding: 10px 16px; font-family: var(--font); font-size: 13.5px; font-weight: 500; color: var(--accent-fg); background: var(--accent); border: 1px solid var(--accent); border-radius: var(--radius-md); cursor: pointer; transition: opacity 0.15s; }
.sg-btn-gen:hover { opacity: 0.75; }
.sg-btn-copy { padding: 10px 18px; font-family: var(--font); font-size: 13.5px; font-weight: 500; color: var(--text-muted); background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); cursor: pointer; transition: background 0.15s, color 0.15s; }
.sg-btn-copy:hover { background: var(--bg-muted); color: var(--text); }
#sg-fb { font-size: 12.5px; color: var(--text-light); min-height: 16px; margin-top: -6px; }
.sg-fade { opacity: 0 !important; }
.info-section { padding: 0 0 72px; }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.info-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 24px; }
.info-icon { display: block; font-size: 18px; margin-bottom: 12px; color: var(--text-muted); }
.info-card h2 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.info-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
.blog-cta { background: var(--bg-muted); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 56px 0; }
.blog-cta-inner { max-width: 560px; text-align: center; }
.blog-cta-label { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-light); margin-bottom: 10px; }
.blog-cta h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.01em; }
.blog-cta p { font-size: 15px; color: var(--text-muted); margin-bottom: 24px; }
.btn-primary, .btn-secondary { display: inline-block; font-family: var(--font); font-size: 14px; font-weight: 500; padding: 10px 22px; border-radius: var(--radius-md); text-decoration: none; cursor: pointer; transition: opacity 0.15s, background 0.15s; }
.btn-primary { background: var(--accent); color: var(--accent-fg); border: 1px solid var(--accent); }
.btn-primary:hover { opacity: 0.75; color: var(--accent-fg); }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-card); opacity: 1; }
.blog-listing { padding: 48px 0 64px; }
.blog-listing-inner { max-width: var(--max-w-post); }
.post-card { padding: 32px 0; border-bottom: 1px solid var(--border); }
.post-card:first-child { border-top: 1px solid var(--border); }
.post-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.post-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; background: var(--bg-muted); color: var(--text-muted); padding: 3px 8px; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.post-date { font-size: 13px; color: var(--text-light); }
.post-card h2 { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; line-height: 1.3; letter-spacing: -0.01em; }
.post-card h2 a { text-decoration: none; }
.post-card h2 a:hover { text-decoration: underline; text-underline-offset: 3px; opacity: 1; }
.post-card p { font-size: 14.5px; color: var(--text-muted); margin-bottom: 14px; line-height: 1.6; }
.read-more { font-size: 13.5px; font-weight: 500; text-decoration: none; color: var(--text); }
.read-more:hover { text-decoration: underline; text-underline-offset: 3px; opacity: 1; }
.post-article { padding: 48px 0 80px; }
.post-container { max-width: var(--max-w-post); }
.breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-light); margin-bottom: 32px; }
.breadcrumb a { text-decoration: none; color: var(--text-muted); }
.breadcrumb a:hover { color: var(--text); opacity: 1; }
.post-header { margin-bottom: 32px; }
.post-header h1 { font-size: clamp(1.5rem, 3.5vw, 2rem); font-weight: 700; line-height: 1.25; letter-spacing: -0.02em; margin: 12px 0 16px; }
.post-intro { font-size: 1.05rem; color: var(--text-muted); line-height: 1.7; border-left: 3px solid var(--border); padding-left: 16px; }
.post-tool-cta { background: var(--bg-muted); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 14px 18px; font-size: 14px; margin-bottom: 36px; }
.post-tool-cta a { font-weight: 500; }
.post-body h2 { font-size: 1.15rem; font-weight: 600; margin: 36px 0 12px; letter-spacing: -0.01em; }
.post-body p { font-size: 15.5px; line-height: 1.75; color: var(--text); margin-bottom: 16px; }
.post-tool-cta--end { background: var(--bg-muted); border-radius: var(--radius-lg); padding: 32px 28px; margin-top: 52px; text-align: center; }
.post-tool-cta-label { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-light); margin-bottom: 8px; }
.post-tool-cta--end h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 10px; }
.post-tool-cta--end p { font-size: 14.5px; color: var(--text-muted); margin-bottom: 20px; }
.post-back { margin-top: 32px; font-size: 14px; }
.post-back a { text-decoration: none; font-weight: 500; }
.post-back a:hover { text-decoration: underline; opacity: 1; }
.site-footer { border-top: 1px solid var(--border); padding: 32px 0; background: var(--bg-card); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-inner p { font-size: 13.5px; color: var(--text-muted); }
.site-footer nav { display: flex; gap: 20px; }
.site-footer nav a { font-size: 13.5px; color: var(--text-muted); text-decoration: none; }
.site-footer nav a:hover { color: var(--text); opacity: 1; }
@media (max-width: 640px) { .info-grid { grid-template-columns: 1fr; } .sg-grid { grid-template-columns: 1fr; } .hero { padding: 40px 0 32px; } .tool-section { padding-bottom: 48px; } }
@media (max-width: 480px) { .footer-inner { flex-direction: column; text-align: center; } .sg-btns { flex-direction: column; } .sg-btn-gen { flex: unset; } }