/* ============================================================
   China TradeMark Pro — design system
   Pure static HTML/CSS. Self-contained brand identity.
   ============================================================ */
:root{
  --paper:#FBF7F0;
  --surface:#FFFFFF;
  --surface-2:#F3ECE0;
  --ink:#15110D;
  --muted:#6E655C;
  --accent:#E23A57;       /* rose-red — China nod, energetic */
  --accent-ink:#B81E3C;
  --teal:#0E7C7B;         /* trust / process */
  --line:#E6DDD0;
  --radius:18px;
  --radius-sm:12px;
  --maxw:1120px;
  --shadow:0 18px 40px -24px rgba(21,17,13,.35);
  --font:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--paper);
  color:var(--ink);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--accent-ink);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}
.center{text-align:center}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  background:var(--accent);color:#fff;font-weight:700;
  padding:14px 26px;border-radius:999px;border:none;cursor:pointer;
  font-size:16px;letter-spacing:.2px;transition:.18s;
}
.btn:hover{background:var(--accent-ink);text-decoration:none;transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink);border:2px solid var(--ink)}
.btn.ghost:hover{background:var(--ink);color:#fff}
.btn.teal{background:var(--teal)}
.btn.teal:hover{background:#0a5d5c}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,247,240,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink)}
.brand .mark{
  width:38px;height:38px;border-radius:10px;background:var(--accent);
  color:#fff;display:grid;place-items:center;font-weight:900;font-size:18px;
}
.brand small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:1.5px}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--ink);font-weight:600;font-size:15px}
.nav-links a:hover{color:var(--accent-ink);text-decoration:none}
.nav-cta{display:flex;align-items:center;gap:14px}
#navtoggle{display:none}
@media(max-width:860px){
  .nav{height:64px}
  .nav-links{
    position:absolute;top:64px;left:0;right:0;background:var(--paper);
    flex-direction:column;gap:0;padding:8px 24px 20px;border-bottom:1px solid var(--line);
    display:none;
  }
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);width:100%}
  #navtoggle{display:block;background:none;border:none;cursor:pointer;padding:10px 4px 10px 10px}
  #navtoggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0}
  #navbox:checked ~ .nav-links{display:flex}
  .brand{font-size:16px;gap:8px;min-width:0}
  .brand .mark{width:32px;height:32px;border-radius:8px;font-size:15px;flex:none}
  .brand small{font-size:9px;letter-spacing:1px}
  .nav-cta{gap:6px}
  .nav-cta .btn{padding:9px 14px;font-size:13.5px;white-space:nowrap}
}
@media(max-width:480px){
  .brand{font-size:14.5px}
  .brand small{display:none}
  .nav-cta .btn{padding:8px 12px;font-size:13px}
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(1200px 500px at 85% -10%,rgba(226,58,87,.12),transparent 60%),
  radial-gradient(900px 500px at -10% 110%,rgba(14,124,123,.12),transparent 60%),
  var(--paper);
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding:72px 24px 80px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:13px;letter-spacing:1.5px;
  text-transform:uppercase;color:var(--accent-ink);background:rgba(226,58,87,.1);
  padding:7px 14px;border-radius:999px}
.hero h1{font-size:54px;line-height:1.05;margin:22px 0 18px;letter-spacing:-1px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p.lead{font-size:20px;color:var(--muted);max-width:34em}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-stats{display:flex;gap:30px;margin-top:38px;flex-wrap:wrap}
.hero-stats .s b{display:block;font-size:30px;line-height:1}
.hero-stats .s span{font-size:13px;color:var(--muted)}

/* hero visual card */
.hero-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow)}
.hero-card h3{font-size:18px;margin-bottom:6px}
.hero-card .price{font-size:46px;font-weight:900;color:var(--accent);letter-spacing:-1px}
.hero-card .price small{font-size:16px;color:var(--muted);font-weight:600}
.hero-card ul{list-style:none;margin:18px 0 22px}
.hero-card li{padding:9px 0 9px 30px;position:relative;border-bottom:1px dashed var(--line);font-size:15px}
.hero-card li:before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:900}
@media(max-width:860px){
  .hero-grid{grid-template-columns:1fr;padding:44px 24px 52px}
  .hero h1{font-size:clamp(31px,8.6vw,40px)}
  .hero p.lead{font-size:18px}
  .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}
  .hero-stats .s b{font-size:24px}
  .hero-stats .s span{font-size:12px}
}

/* ---------- Sections ---------- */
section{padding:78px 0}
.section-head{max-width:680px;margin:0 auto 44px;text-align:center}
.section-head .eyebrow{margin-bottom:14px}
.section-head h2{font-size:38px;letter-spacing:-.5px;line-height:1.1}
.section-head p{color:var(--muted);font-size:18px;margin-top:12px}
.alt{background:var(--surface)}

/* why cards */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  transition:.18s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card .ico{width:46px;height:46px;border-radius:12px;background:var(--surface-2);display:grid;
  place-items:center;font-size:22px;margin-bottom:16px}
.card h3{font-size:20px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
@media(max-width:860px){.why-grid{grid-template-columns:1fr}}

/* service list */
.svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.svc{display:flex;gap:16px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:20px}
.svc .tag{font-size:12px;font-weight:800;letter-spacing:.5px;color:var(--teal);background:rgba(14,124,123,.1);
  padding:4px 10px;border-radius:999px;white-space:nowrap}
.svc h4{font-size:17px;margin-bottom:4px}
.svc p{color:var(--muted);font-size:14px}
@media(max-width:860px){.svc-grid{grid-template-columns:1fr}}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;position:relative}
.step:before{counter-increment:step;content:counter(step);position:absolute;top:-16px;left:24px;
  width:38px;height:38px;border-radius:50%;background:var(--accent);color:#fff;font-weight:900;
  display:grid;place-items:center;box-shadow:var(--shadow)}
.step h4{margin-top:14px;font-size:18px}
.step p{color:var(--muted);font-size:14px}
@media(max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}

/* timeline */
.timeline{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:10px}
.tl{background:var(--surface-2);border-radius:var(--radius);padding:26px;border:1px solid var(--line)}
.tl h4{display:flex;align-items:center;gap:10px;font-size:18px;margin-bottom:14px}
.tl h4 .dot{width:12px;height:12px;border-radius:50%}
.tl.legal .dot{background:var(--accent)}
.tl.practical .dot{background:var(--teal)}
.tl ul{list-style:none}
.tl li{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:15px}
.tl li span:last-child{font-weight:700;white-space:nowrap}
.tl .total{border:none;margin-top:6px;padding-top:14px;font-size:16px}
.tl .total span:last-child{color:var(--accent-ink)}
@media(max-width:860px){.timeline{grid-template-columns:1fr}}

/* pricing table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
table{width:100%;border-collapse:collapse;min-width:560px}
th,td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--line);font-size:15px}
thead th{background:var(--surface-2);font-size:13px;letter-spacing:.5px;text-transform:uppercase;color:var(--muted)}
tbody tr:last-child td{border-bottom:none}
td.price{font-weight:800;color:var(--accent-ink);white-space:nowrap}
.note{font-size:13px;color:var(--muted)}

/* FAQ */
details.faq{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  margin-bottom:12px;padding:4px 20px}
details.faq summary{cursor:pointer;font-weight:700;font-size:17px;padding:16px 0;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary:after{content:"+";font-size:22px;color:var(--accent);font-weight:900}
details.faq[open] summary:after{content:"–"}
details.faq p{padding:0 0 18px;color:var(--muted)}

/* forms */
.form-card{max-width:620px;margin:0 auto;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-weight:700;font-size:14px;margin-bottom:7px}
.field input,.field textarea,.field select{
  width:100%;padding:13px 15px;border:1.5px solid var(--line);border-radius:var(--radius-sm);
  font-family:inherit;font-size:15px;background:var(--paper);color:var(--ink)}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--accent)}
.field textarea{resize:vertical;min-height:120px}
.form-note{font-size:13px;color:var(--muted);margin-top:14px;text-align:center}
.contact-split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info h3{font-size:20px;margin-bottom:8px}
.contact-info p{color:var(--muted);margin-bottom:18px}
.contact-box{background:var(--surface-2);border-radius:var(--radius-sm);padding:18px;margin-bottom:14px}
.contact-box b{display:block;font-size:13px;color:var(--muted);letter-spacing:.5px;text-transform:uppercase}
.contact-box a{font-size:18px;font-weight:800;color:var(--ink)}
.copybtn{margin-left:10px;font-size:12px;border:1px solid var(--line);background:#fff;border-radius:8px;
  padding:4px 10px;cursor:pointer}
@media(max-width:860px){.contact-split{grid-template-columns:1fr}}

/* CTA band */
.cta-band{background:var(--ink);color:#fff;border-radius:var(--radius);padding:54px 40px;text-align:center}
.cta-band h2{font-size:34px;margin-bottom:12px}
.cta-band p{color:#cfc7bd;max-width:46em;margin:0 auto 26px}
.cta-band .btn{background:var(--accent)}
.cta-band .btn:hover{background:var(--accent-ink)}

/* footer */
.site-footer{background:var(--ink);color:#cfc7bd;padding:54px 0 30px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:24px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.5px}
.site-footer a{color:#cfc7bd;display:block;padding:5px 0;font-size:14px}
.site-footer a:hover{color:#fff}
.site-footer .brand{color:#fff;margin-bottom:14px}
.site-footer .brand small{color:#9a9189}
.foot-bottom{border-top:1px solid #2c2620;margin-top:36px;padding-top:20px;font-size:13px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#9a9189}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}.foot-grid>div:first-child{grid-column:1/-1}}

/* ---------- Mobile fine-tuning ---------- */
@media(max-width:560px){
  .wrap{padding:0 18px}
  section{padding:56px 0}
  .hero-grid{padding:36px 18px 44px}
  .hero-cta{flex-direction:column;gap:12px}
  .hero-cta .btn{justify-content:center}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:27px}
  .section-head p{font-size:16px}
  .eyebrow{font-size:11px;letter-spacing:1px;padding:6px 12px}
  .hero-card{padding:22px}
  .hero-card .price{font-size:38px}
  .card{padding:22px}
  .svc{padding:16px}
  .step{padding:20px}
  .tl{padding:20px}
  .banner{padding:14px 16px}
  details.faq{padding:4px 16px}
  details.faq summary{font-size:15.5px}
  .cta-band{padding:38px 22px}
  .cta-band h2{font-size:26px}
  .cta-band p{font-size:15px}
  .form-card{padding:26px 18px}
  .btn{padding:13px 22px;font-size:15px}
  .table-wrap{-webkit-overflow-scrolling:touch}
}
@media(max-width:480px){
  .foot-grid{grid-template-columns:1fr}
  .site-footer a{word-break:break-word}
}

/* misc */
.banner{background:var(--surface-2);border:1px dashed var(--line);border-radius:var(--radius-sm);
  padding:16px 20px;font-size:14px;color:var(--muted);margin-top:34px}
.kicker{font-weight:800;color:var(--teal);letter-spacing:1px;text-transform:uppercase;font-size:13px}
.pill{display:inline-block;font-size:12px;font-weight:700;padding:4px 11px;border-radius:999px;
  background:rgba(14,124,123,.12);color:var(--teal)}
.pill.warn{background:rgba(226,58,87,.12);color:var(--accent-ink)}