@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800;900&display=swap');

:root{
  --bg:#0e0c1a; --panel:#171430; --panel-2:#1e1a3d; --card:#16132e;
  --line:rgba(150,130,255,.13);
  --text:#ece9ff; --muted:rgba(200,195,235,.6); --dim:rgba(180,175,220,.36);
  --yellow:#f5e003; --yr:245,224,3;
  --violet:#8b6dff; --vr:139,109,255;
  --green:#2bd66f;
  --link:#6db8ff;
  --r:16px; --r2:22px; --pad:18px; --hdr:62px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Manrope',system-ui,sans-serif;font-size:15px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}

.bg{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(ellipse 60% 45% at 80% 0%,rgba(139,109,255,.16) 0%,transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 90%,rgba(245,224,3,.05) 0%,transparent 55%),
    var(--bg);}

/* HEADER */
.hdr{position:sticky;top:0;z-index:100;height:var(--hdr);background:rgba(14,12,26,.88);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.hdr__inner{max-width:1180px;margin:0 auto;height:100%;padding:0 var(--pad);display:flex;align-items:center;gap:14px}
.hdr__logo img{height:28px;width:auto}
.hdr__nav{display:none;list-style:none;flex:1;justify-content:center;gap:3px}
.hdr__nav a{padding:8px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--muted);transition:.15s}
.hdr__nav a:hover,.hdr__nav a.active{color:var(--yellow);background:rgba(var(--yr),.1)}
.hdr__cta{margin-left:auto;padding:9px 22px;border-radius:999px;background:var(--yellow);color:#0e0c1a;font-weight:800;font-size:13px;white-space:nowrap;transition:.15s}
.hdr__cta:hover{filter:brightness(1.08)}
.burger{width:38px;height:38px;border:1px solid var(--line);border-radius:12px;background:transparent;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;margin-left:auto}
.burger__line{width:18px;height:2px;background:var(--yellow);border-radius:2px}

.side{position:fixed;inset:0 0 0 auto;width:272px;z-index:200;background:var(--panel);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .25s;padding:20px 0 40px}
.side.open{transform:translateX(0)}
.side__close{position:absolute;top:14px;right:14px;width:36px;height:36px;background:var(--panel-2);border:none;border-radius:12px;cursor:pointer;display:grid;place-content:center}
.side__close::before,.side__close::after{content:'';position:absolute;width:14px;height:2px;background:var(--muted)}
.side__close::before{transform:rotate(45deg)}.side__close::after{transform:rotate(-45deg)}
.side nav{margin-top:56px;padding:0 12px}
.side nav a{display:flex;gap:10px;padding:13px 15px;border-radius:12px;font-weight:600;font-size:14px;color:var(--muted)}
.side nav a.active,.side nav a:hover{color:var(--yellow);background:rgba(var(--yr),.1)}
.overlay{position:fixed;inset:0;z-index:150;background:rgba(0,0,0,.6);display:none}
.overlay.show{display:block}

.page{max-width:860px;margin:0 auto;padding:34px var(--pad) 80px}

/* HERO */
.hero{margin-bottom:28px}
.hero h1{font-size:clamp(24px,4vw,36px);font-weight:800;line-height:1.18;margin-bottom:14px;color:#fff;letter-spacing:-.01em}
.hero h1 .hl{color:var(--yellow)}
.hero__meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:16px;font-size:12.5px;color:var(--dim)}
.hero__meta .by{color:var(--muted);font-weight:600}
.hero__meta time{color:var(--muted)}
.hero__lead{font-size:16px;color:var(--muted)}
.lead-rest{display:none}.hero__lead.open .lead-rest{display:inline}
.lead-toggle{display:inline-block;margin-left:6px;background:none;border:none;cursor:pointer;font-family:inherit;font-size:inherit;font-weight:700;color:var(--yellow);text-decoration:underline;text-underline-offset:3px}
.lead-toggle:hover{color:#fff}

/* STATS */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:30px}
@media(min-width:560px){.stats{grid-template-columns:repeat(6,1fr)}}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 12px;text-align:center}
.stat__val{font-size:20px;font-weight:900;color:var(--yellow);line-height:1;margin-bottom:5px}
.stat__lbl{font-size:10.5px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em}

/* SECTION */
.section{margin-bottom:38px}
.section h2{font-size:clamp(18px,2.7vw,24px);font-weight:800;margin-bottom:14px;color:#fff;display:flex;align-items:center;gap:11px}
.section h2::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--yellow);flex-shrink:0;box-shadow:0 0 12px rgba(var(--yr),.6)}
.section h3{font-size:16px;font-weight:800;margin:22px 0 8px;color:var(--violet)}
.section p{margin-bottom:12px;color:rgba(230,228,255,.8)}
.section p:last-child{margin-bottom:0}
.section strong{color:#fff;font-weight:700}
.section ul,.section ol{padding-left:20px;margin-bottom:12px}
.section li{margin-bottom:6px;color:rgba(230,228,255,.8)}
.ilink{color:var(--link);text-decoration:underline;text-underline-offset:3px;font-weight:600}
.ilink:hover{color:var(--yellow)}

/* TABLE */
.tbl-wrap{overflow-x:auto;margin:16px 0;border-radius:var(--r);border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{background:var(--panel-2);color:var(--yellow);font-weight:700;text-align:left;padding:11px 14px;white-space:nowrap;font-size:12px;text-transform:uppercase;letter-spacing:.04em}
td{padding:10px 14px;border-bottom:1px solid var(--line);color:rgba(230,228,255,.8)}
tr:last-child td{border-bottom:none}
tr:nth-child(even) td{background:rgba(139,109,255,.04)}

/* FAQ */
.faq__item{border:1px solid var(--line);border-radius:var(--r);margin-bottom:8px;background:var(--card);overflow:hidden}
.faq__q{width:100%;background:none;border:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:16px 18px;gap:12px;text-align:left;font-family:inherit;font-size:14.5px;font-weight:700;color:var(--text)}
.faq__q:hover{color:var(--yellow)}
.faq__icon{flex-shrink:0;width:24px;height:24px;border-radius:8px;background:rgba(var(--yr),.12);display:grid;place-content:center;transition:.2s;font-size:15px;color:var(--yellow);font-style:normal}
.faq__item.open .faq__icon{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .3s}
.faq__item.open .faq__a{max-height:1000px}
.faq__a-inner{padding:0 18px 16px;font-size:14px;color:var(--muted);line-height:1.7}

/* CARDS */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin:16px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;transition:.2s}
.card:hover{border-color:rgba(var(--vr),.4);transform:translateY(-2px)}
.card__icon{font-size:24px;margin-bottom:10px}
.card__title{font-size:14px;font-weight:800;margin-bottom:5px;color:#fff}
.card__text{font-size:13px;color:var(--muted);line-height:1.55}

/* STEPS */
.steps{counter-reset:s;display:flex;flex-direction:column;gap:10px;margin:16px 0}
.step{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.step__num{counter-increment:s;flex-shrink:0;width:30px;height:30px;border-radius:10px;background:var(--violet);color:#fff;display:grid;place-content:center;font-size:14px;font-weight:800;margin-top:2px}
.step__num::before{content:counter(s)}
.step__title{font-size:14px;font-weight:800;margin-bottom:3px;color:#fff}
.step__text{font-size:13px;color:var(--muted)}

/* NOTICE */
.notice{background:rgba(var(--vr),.08);border:1px solid rgba(var(--vr),.25);border-left:3px solid var(--violet);border-radius:var(--r);padding:14px 16px;font-size:13.5px;color:rgba(230,228,255,.78);margin:20px 0}
.notice strong{color:var(--violet)}

/* INTERNAL LINKS */
.internal-links{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}
.internal-links a{padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-size:13px;font-weight:600;color:var(--muted);transition:.15s}
.internal-links a:hover{color:var(--yellow);border-color:rgba(var(--yr),.3)}

/* BREADCRUMB */
.breadcrumb{display:flex;gap:6px;align-items:center;font-size:12px;color:var(--dim);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--link);font-weight:600}

/* FIGURE */
.article-figure{margin:22px 0;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);line-height:0}
.article-figure img{width:100%}

/* ── BONUS CALCULATOR ── */
.calc{background:linear-gradient(160deg,var(--panel),var(--panel-2));border:1px solid rgba(var(--yr),.25);border-radius:var(--r2);padding:24px;margin:24px 0;position:relative;overflow:hidden}
.calc::before{content:'';position:absolute;top:-40px;right:-40px;width:160px;height:160px;border-radius:50%;background:radial-gradient(circle,rgba(var(--yr),.12),transparent 70%)}
.calc__head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.calc__title{font-size:18px;font-weight:800;color:#fff}
.calc__badge{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:#0e0c1a;background:var(--yellow);padding:3px 10px;border-radius:999px}
.calc__sub{font-size:13px;color:var(--muted);margin-bottom:20px}
.calc__field{margin-bottom:16px}
.calc__label{display:flex;justify-content:space-between;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:8px}
.calc__label b{color:var(--yellow);font-size:15px}
.calc__input{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px;color:#fff;font-family:inherit;font-size:15px;font-weight:600}
.calc__input:focus{outline:none;border-color:var(--yellow)}
.calc__range{width:100%;-webkit-appearance:none;height:6px;border-radius:3px;background:var(--bg);outline:none;margin-top:4px}
.calc__range::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--yellow);cursor:pointer;border:3px solid var(--panel)}
.calc__range::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--yellow);cursor:pointer;border:3px solid var(--panel)}
.calc__row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.calc__select{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px;color:#fff;font-family:inherit;font-size:14px;font-weight:600;cursor:pointer}
.calc__select:focus{outline:none;border-color:var(--yellow)}
.calc__results{margin-top:20px;border-top:1px dashed var(--line);padding-top:18px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.calc__res{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px}
.calc__res-lbl{font-size:11px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px}
.calc__res-val{font-size:21px;font-weight:900;color:var(--yellow);line-height:1.1}
.calc__res-val small{font-size:13px;color:var(--muted);font-weight:600}
.calc__res.wide{grid-column:1/-1}
.calc__res.accent{border-color:rgba(var(--yr),.3);background:rgba(var(--yr),.05)}
.calc__note{font-size:11.5px;color:var(--dim);margin-top:14px;line-height:1.6}

/* AUTHOR */
.author-section{margin:44px 0 24px;border-top:1px solid var(--line);padding-top:26px}
.author-section__title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--dim);margin-bottom:14px}
.author-card{display:flex;gap:14px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;max-width:360px}
.author-card__avatar{width:46px;height:46px;border-radius:12px;flex-shrink:0;display:grid;place-content:center;font-size:15px;font-weight:800;color:#0e0c1a;background:var(--yellow)}
.author-card__name{font-size:14px;font-weight:800;color:#fff}
.author-card__role{font-size:12px;color:var(--muted);margin-top:2px}
.author-card__date{font-size:11.5px;color:var(--dim);margin-top:3px}

/* FOOTER */
.ft{background:var(--panel);border-top:1px solid var(--line);padding:34px var(--pad) 22px}
.ft__inner{max-width:1180px;margin:0 auto;display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;align-items:center}
.ft__nav{display:flex;flex-wrap:wrap;gap:6px 18px}
.ft__nav a{font-size:13px;color:var(--muted);font-weight:600}
.ft__nav a:hover{color:var(--yellow)}
.ft__bottom{max-width:1180px;margin:18px auto 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;border-top:1px solid var(--line);padding-top:18px}
.ft__logos{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.ft__logos img{height:22px;opacity:.5;filter:brightness(0) invert(1);transition:.15s}
.ft__logos img:hover{opacity:.85}
.ft__legal{flex:1;font-size:11.5px;color:var(--dim);line-height:1.6;max-width:600px}
.ft__copy{font-size:11.5px;color:var(--dim);width:100%;margin-top:4px}
p.disclaimer{font-size:12.5px;color:var(--dim);font-style:italic;margin-top:16px}

@media(min-width:768px){.hdr__nav{display:flex}.burger{display:none}:root{--hdr:64px}.hdr__logo img{height:30px}}
@media(min-width:1024px){.page{padding:46px 24px 100px}}