/* FvTradingSystem — style.css */
:root{
  --bg:#0b0f1a; --bg2:#101625; --panel:#151d31; --panel2:#1a2440;
  --text:#e8ecf5; --muted:#9aa5bd; --gold:#d4a843; --gold2:#f0c96a;
  --red:#e05555; --green:#3fbf7f; --line:#25314e;
  --maxw:1160px; --radius:14px;
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono','Courier New',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;font-size:17px}
img{max-width:100%;display:block}
a{color:var(--gold2);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ---------- NAV ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(11,15,26,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:background .3s}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:1.15rem;letter-spacing:.5px;color:var(--text)}
.logo span{color:var(--gold)}
.nav ul{display:flex;gap:26px;list-style:none;align-items:center}
.nav ul a{color:var(--muted);font-size:.92rem;font-weight:500}
.nav ul a:hover,.nav ul a.active{color:var(--gold2);text-decoration:none}
.lang-switch{border:1px solid var(--line);border-radius:8px;padding:4px 10px;font-size:.8rem!important;color:var(--text)!important}
.burger{display:none;background:none;border:none;color:var(--text);font-size:1.6rem;cursor:pointer}
@media(max-width:900px){
  .burger{display:block}
  .nav ul{display:none;position:absolute;top:64px;left:0;right:0;background:var(--bg2);flex-direction:column;padding:18px;border-bottom:1px solid var(--line)}
  .nav ul.open{display:flex}
}

/* ---------- HERO / PARALLAX ---------- */
.parallax{position:relative;background-size:cover;background-position:center;background-attachment:fixed;overflow:hidden}
@media(max-width:900px),(hover:none){.parallax{background-attachment:scroll}}
.parallax::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,15,26,.78),rgba(11,15,26,.9))}
.hero{min-height:96vh;display:flex;align-items:center}
.hero .container{position:relative;z-index:2}
.hero h1{font-size:clamp(2.3rem,5.5vw,4.2rem);line-height:1.12;font-weight:800;max-width:820px}
.hero h1 em{color:var(--gold);font-style:normal}
.hero p.lead{margin:22px 0 34px;font-size:clamp(1.05rem,2vw,1.3rem);color:var(--muted);max-width:640px}
.kicker{display:inline-block;font-family:var(--mono);font-size:.8rem;letter-spacing:2px;text-transform:uppercase;color:var(--gold);border:1px solid var(--gold);border-radius:99px;padding:5px 14px;margin-bottom:22px}
.band{min-height:46vh;display:flex;align-items:center;text-align:center}
.band .container{position:relative;z-index:2}
.band blockquote{font-size:clamp(1.3rem,3vw,2rem);font-weight:700;max-width:840px;margin:0 auto;line-height:1.35}
.band cite{display:block;margin-top:14px;color:var(--gold);font-style:normal;font-family:var(--mono);font-size:.85rem}

/* ---------- BUTTONS ---------- */
.btn{display:inline-block;padding:13px 28px;border-radius:10px;font-weight:700;font-size:.95rem;transition:transform .15s,box-shadow .15s;cursor:pointer;border:none}
.btn:hover{transform:translateY(-2px);text-decoration:none}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#161616}
.btn-gold:hover{box-shadow:0 8px 28px rgba(212,168,67,.35)}
.btn-ghost{border:1.5px solid var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--gold)}
.btn-row{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- SECTIONS ---------- */
section.block{padding:90px 0}
section.block.alt{background:var(--bg2)}
h2.sec{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:800;margin-bottom:14px}
h2.sec span{color:var(--gold)}
p.sub{color:var(--muted);max-width:720px;margin-bottom:44px;font-size:1.05rem}
.center{text-align:center}.center p.sub{margin-left:auto;margin-right:auto}

/* ---------- NUMBERS STRIP ---------- */
.numbers{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:18px;margin-top:10px}
.num{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px 20px;text-align:center}
.num b{display:block;font-size:2rem;font-weight:800;color:var(--gold2);font-family:var(--mono)}
.num.bad b{color:var(--red)}
.num small{color:var(--muted);font-size:.82rem;line-height:1.4;display:block;margin-top:6px}

/* ---------- CARDS ---------- */
.grid{display:grid;gap:24px}
.grid.c2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.grid.c3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:border-color .2s,transform .2s;display:flex;flex-direction:column}
.card:hover{border-color:var(--gold);transform:translateY(-4px)}
.card h3{font-size:1.2rem;margin-bottom:10px}
.card p{color:var(--muted);font-size:.95rem;flex:1}
.card .tag{display:inline-block;font-family:var(--mono);font-size:.7rem;letter-spacing:1.5px;text-transform:uppercase;color:var(--gold);margin-bottom:12px}
.card a.more{margin-top:16px;font-weight:600;font-size:.9rem}
.card .cover{border-radius:10px;margin:-12px -12px 18px;border:1px solid var(--line);aspect-ratio:16/9;object-fit:cover;width:calc(100% + 24px);max-width:none}

/* ---------- SPLIT ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
@media(max-width:860px){.split{grid-template-columns:1fr}}
.split img{border-radius:var(--radius);border:1px solid var(--line)}
.checklist{list-style:none;margin:20px 0}
.checklist li{padding:9px 0 9px 34px;position:relative;color:var(--muted)}
.checklist li::before{content:"✓";position:absolute;left:0;color:var(--gold);font-weight:800}
.checklist li b{color:var(--text)}
.xlist li::before{content:"✕";color:var(--red)}

/* ---------- ARTICLE ---------- */
.article-hero{padding:150px 0 50px;background:var(--bg2);border-bottom:1px solid var(--line)}
.article-hero h1{font-size:clamp(1.9rem,4vw,3rem);line-height:1.2;max-width:880px}
.article-meta{color:var(--muted);font-family:var(--mono);font-size:.82rem;margin:18px 0 0;display:flex;gap:18px;flex-wrap:wrap}
article.post{max-width:780px;margin:0 auto;padding:60px 22px 90px}
article.post h2{font-size:1.6rem;margin:48px 0 16px;color:var(--gold2)}
article.post h3{font-size:1.2rem;margin:34px 0 12px}
article.post p{margin-bottom:20px}
article.post ul,article.post ol{margin:0 0 20px 24px}
article.post li{margin-bottom:10px}
article.post blockquote{border-left:3px solid var(--gold);padding:14px 22px;margin:26px 0;background:var(--panel);border-radius:0 10px 10px 0;color:var(--muted);font-style:italic}
article.post strong{color:var(--gold2)}
article.post table{width:100%;border-collapse:collapse;margin:26px 0;font-size:.92rem}
article.post th,article.post td{border:1px solid var(--line);padding:10px 14px;text-align:left}
article.post th{background:var(--panel);color:var(--gold2)}
pre{background:#0a0e18;border:1px solid var(--line);border-radius:10px;padding:20px;overflow-x:auto;margin:26px 0;font-family:var(--mono);font-size:.82rem;line-height:1.6;color:#c9d4ea}
code{font-family:var(--mono);font-size:.85em;background:var(--panel);padding:2px 7px;border-radius:5px;color:var(--gold2)}
pre code{background:none;padding:0;color:inherit}
.prompt-box{background:linear-gradient(135deg,#141c33,#1a2440);border:1px solid var(--gold);border-radius:12px;padding:24px;margin:26px 0;position:relative}
.prompt-box::before{content:"PROMPT";position:absolute;top:-11px;left:18px;background:var(--gold);color:#161616;font-family:var(--mono);font-size:.68rem;font-weight:800;letter-spacing:2px;padding:3px 12px;border-radius:99px}
.prompt-box p{margin:0;font-family:var(--mono);font-size:.88rem;color:#dfe6f5;white-space:pre-wrap}
.warn{background:rgba(224,85,85,.08);border:1px solid rgba(224,85,85,.4);border-radius:12px;padding:20px 24px;margin:26px 0}
.warn b{color:var(--red)}
.note{background:rgba(63,191,127,.07);border:1px solid rgba(63,191,127,.35);border-radius:12px;padding:20px 24px;margin:26px 0}
.note b{color:var(--green)}

/* ---------- CALCULATORS ---------- */
.calc{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px;margin:30px 0}
.calc h3{color:var(--gold2);margin-bottom:6px}
.calc p.hint{color:var(--muted);font-size:.88rem;margin-bottom:20px}
.calc .row{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.calc label{flex:1;min-width:150px;font-size:.85rem;color:var(--muted)}
.calc input{width:100%;margin-top:6px;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:11px 14px;color:var(--text);font-family:var(--mono);font-size:1rem}
.calc input:focus{outline:none;border-color:var(--gold)}
.calc .result{margin-top:18px;padding:18px;border-radius:10px;background:var(--bg);border:1px dashed var(--line);font-family:var(--mono);font-size:1rem}
.calc .result b{font-size:1.4rem}
.ok{color:var(--green)}.ko{color:var(--red)}.mid{color:var(--gold2)}

/* ---------- CONTACT FORM ---------- */
.calc textarea{width:100%;margin-top:6px;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:11px 14px;color:var(--text);font-family:var(--font);font-size:1rem;resize:vertical;line-height:1.5}
.calc textarea:focus{outline:none;border-color:var(--gold)}
.calc .row label[data-full]{flex:1 1 100%}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-feedback{margin-bottom:20px;padding:14px 18px;border-radius:10px;font-size:.92rem}
.form-feedback.ok{background:rgba(63,191,127,.1);border:1px solid rgba(63,191,127,.4)}
.form-feedback.ko{background:rgba(224,85,85,.1);border:1px solid rgba(224,85,85,.4)}

/* ---------- BLOG INDEX ---------- */
.post-list{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}

/* ---------- FOOTER ---------- */
footer{background:#080b13;border-top:1px solid var(--line);padding:60px 0 30px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
@media(max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
footer h4{font-size:.85rem;text-transform:uppercase;letter-spacing:1.5px;color:var(--gold);margin-bottom:14px}
footer ul{list-style:none}
footer li{margin-bottom:9px}
footer a{color:var(--muted);font-size:.9rem}
footer a:hover{color:var(--gold2)}
.foot-brand p{color:var(--muted);font-size:.88rem;margin-top:12px;max-width:320px}
.disclaimer{border-top:1px solid var(--line);padding-top:24px;color:#6b7590;font-size:.75rem;line-height:1.6}
.disclaimer b{color:#8f99b4}

/* ---------- REVEAL ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}

/* ---------- MISC ---------- */
.toc{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px 26px;margin:26px 0;columns:2;column-gap:40px;font-size:.9rem}
@media(max-width:700px){.toc{columns:1}}
.toc li{margin-bottom:6px;color:var(--muted)}
.breadcrumb{font-family:var(--mono);font-size:.78rem;color:var(--muted);margin-bottom:14px}
.hr-gold{border:none;height:2px;width:64px;background:var(--gold);margin:0 0 26px}
.center .hr-gold{margin:0 auto 26px}