/* Guo Zhixi — China-side Legal Risk & Due Diligence (EN)
   Self-contained, zero external dependencies, system fonts, responsive. */

:root{
  --navy:#0f2740;
  --navy-2:#16334f;
  --ink:#1a2330;
  --slate:#4a5568;
  --muted:#6b7686;
  --line:#e4e8ee;
  --bg:#ffffff;
  --bg-soft:#f6f8fb;
  --accent:#b08a3e;        /* muted gold */
  --accent-dark:#8f6d29;
  --ok:#2f6f4f;
  --maxw:1080px;
  --radius:10px;
  --shadow:0 1px 3px rgba(16,39,64,.06),0 8px 24px rgba(16,39,64,.06);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Noto Sans",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  font-size:17px;
}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;color:var(--navy);line-height:1.25;font-weight:600}
h1{font-size:2.15rem;margin:.2em 0 .4em}
h2{font-size:1.5rem;margin:1.6em 0 .5em}
h3{font-size:1.15rem;margin:1.3em 0 .3em}
p{margin:.6em 0}
a{color:var(--accent-dark);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.small{font-size:.9rem;color:var(--muted)}
.center{text-align:center}

/* Header / nav */
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:20}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;flex-direction:column;line-height:1.2}
.brand b{font-family:Georgia,serif;color:var(--navy);font-size:1.05rem}
.brand span{font-size:.78rem;color:var(--muted)}
.nav ul{list-style:none;display:flex;gap:20px;margin:0;padding:0;flex-wrap:wrap}
.nav a{color:var(--slate);font-size:.95rem}
.nav a:hover{color:var(--navy);text-decoration:none}
.nav .cta{display:inline-block;background:var(--navy);color:#fff;padding:8px 15px;border-radius:8px;font-size:.9rem}
.nav .cta:hover{background:var(--navy-2, #16334f);text-decoration:none}

/* Buttons */
.btn{display:inline-block;padding:12px 22px;border-radius:8px;font-weight:600;font-size:1rem;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--accent);color:#231a06}
.btn-primary:hover{background:var(--accent-dark);color:#fff;text-decoration:none}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--navy);text-decoration:none}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}

/* Hero */
.hero{background:linear-gradient(180deg,#0f2740,#16334f);color:#eaf0f7;padding:64px 0 56px}
.hero h1{color:#fff;max-width:20ch}
.hero .lead{font-size:1.2rem;color:#cdd8e6;max-width:60ch;margin-top:.4em}
.hero .eyebrow{letter-spacing:.14em;text-transform:uppercase;font-size:.75rem;color:var(--accent);font-weight:700}
.hero .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.hero .btn-ghost:hover{border-color:#fff}
.hero .fineprint{color:#9fb1c6;margin-top:14px}

/* Sections */
section{padding:46px 0}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{letter-spacing:.12em;text-transform:uppercase;font-size:.75rem;color:var(--accent-dark);font-weight:700}

/* Cards / grid */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card h3{margin-top:0}
.card .price{font-family:Georgia,serif;color:var(--navy);font-size:1.25rem;margin:.2em 0}
.card ul{margin:.5em 0 0;padding-left:1.1em}
.card li{margin:.25em 0}

/* Lists / checklists */
.check{list-style:none;padding:0;margin:1em 0}
.check li{position:relative;padding-left:28px;margin:.5em 0}
.check li:before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:700}

/* Callout */
.callout{background:#fbf7ee;border:1px solid #ecdcb6;border-left:4px solid var(--accent);border-radius:8px;padding:16px 18px;margin:20px 0}

/* Article body */
.article{max-width:760px}
.article h1{margin-top:.2em}
.meta{color:var(--muted);font-size:.9rem;margin-bottom:1.2em}
.article ul,.article ol{padding-left:1.3em}
.article li{margin:.35em 0}

/* Footer */
.site-footer{background:#0c2036;color:#b9c6d6;padding:40px 0 30px;margin-top:20px;font-size:.9rem}
.site-footer a{color:#dbe6f2}
.site-footer h4{color:#fff;font-family:Georgia,serif;margin:0 0 8px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:26px}
.footer-note{border-top:1px solid rgba(255,255,255,.12);margin-top:26px;padding-top:16px;color:#8ea1b6;font-size:.82rem}

/* Disclaimer strip */
.disclaimer{background:#f6f8fb;border-top:1px solid var(--line);color:var(--muted);font-size:.82rem;padding:18px 0}

/* Responsive */
@media (max-width:820px){
  body{font-size:16px}
  h1{font-size:1.8rem}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav{flex-wrap:wrap}
  .nav ul{gap:14px}
}