/* ================================================================
   TaxSetu 2025 — Professional Fintech Edition
   Deep navy trust palette · surgical spacing · zero emoji-icon candies
   ================================================================ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#f4f1ec; --card:#ffffff; --card2:#faf8f4;
  --ink:#151210; --muted:#6b655c;
  --brand:#1f5bf0; --brand-deep:#14243f; --brand-soft:#eef3fe;
  --accent:#f26b1d; --accent-soft:#fff2e9;
  --serif:"Georgia","Times New Roman",serif;
  --green:#0e9f6e; --green-bg:#e9f8f2;
  --red:#df3b3b; --red-bg:#fdf0f0;
  --amber-bg:#fff7ec; --blue-bg:#eef3fe; --purple:#6d4aff;
  --border:#e8e3d9; --border-strong:#d3ccc0;
  --ring:rgba(31,91,240,.14);
  --shadow:0 1px 2px rgba(23,18,10,.04);
  --shadow-lg:0 18px 40px -16px rgba(23,18,10,.20);
  --radius:12px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
html[data-theme="dark"]{
  --bg:#0e0d0c; --card:#171412; --card2:#1b1815;
  --ink:#f0ece6; --muted:#a39a8e;
  --brand:#7b9fff; --brand-deep:#1d2b47; --brand-soft:#1c3560;
  --serif:"Georgia","Times New Roman",serif;
  --accent:#ff8c4d; --accent-soft:#241708;
  --green:#3ecf9a; --green-bg:#0c2019;
  --red:#ff7a75; --red-bg:#2a1616;
  --amber-bg:#221a0c; --blue-bg:#15203e;
  --border:#1e2740; --border-strong:#2b375a
  --ring:rgba(109,151,255,.16);
  --shadow:0 1px 2px rgba(0,0,0,.4);
  --shadow-lg:0 18px 40px -14px rgba(0,0,0,.55);
}
html{scroll-behavior:smooth}
body{
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.66; font-size:15px;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
::selection{background:var(--brand);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:rgba(120,135,170,.4);border-radius:99px;border:3px solid transparent;background-clip:content-box}
::-webkit-scrollbar-track{background:transparent}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
[id]{scroll-margin-top:74px}

/* ---------- Progress bar ---------- */
.progress-bar{position:fixed;top:0;left:0;height:2.5px;width:0;z-index:99;
  background:var(--brand);transition:width .1s linear}

/* ---------- Topbar ---------- */
.topbar{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:14px;
  padding:0 20px;height:60px;
  background:color-mix(in srgb,var(--card) 88%,transparent);
  -webkit-backdrop-filter:saturate(140%) blur(12px);backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--border);
}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:9px;
  border:1px solid var(--border);background:var(--card);color:var(--muted);cursor:pointer;flex:none;transition:.16s}
.icon-btn:hover{border-color:var(--border-strong);color:var(--ink)}
.theme-toggle .moon{display:none}
html[data-theme="dark"] .theme-toggle .moon{display:block}
html[data-theme="dark"] .theme-toggle .sun{display:none}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800}
.brand:hover{text-decoration:none}
.brand-badge{width:34px;height:34px;border-radius:9px;color:#fff;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-deep);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14)}
.brand-name{font-size:18px;letter-spacing:-.5px;font-weight:800}
.brand-name em{font-style:normal;color:var(--accent)}
.brand-name small{color:var(--muted);font-weight:600;font-size:10.5px;border:1px solid var(--border);
  border-radius:999px;padding:2px 8px;vertical-align:middle;letter-spacing:.06em;background:var(--card2)}
.searchwrap{position:relative;flex:1;max-width:500px;margin:0 auto;display:flex;align-items:center;gap:9px;
  background:var(--card2);border:1px solid var(--border);border-radius:9px;padding:8px 13px;color:var(--muted);
  transition:border-color .15s,box-shadow .15s,background .15s}
.searchwrap:focus-within{border-color:var(--brand);background:var(--card);box-shadow:0 0 0 3px var(--ring)}
.searchwrap input{flex:1;border:none;background:transparent;color:var(--ink);font-size:14px;outline:none;min-width:0}
.search-results{position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--card);border:1px solid var(--border);
  border-radius:12px;box-shadow:var(--shadow-lg);max-height:340px;overflow:auto;display:none;padding:5px}
.search-results.open{display:block;animation:pop .16s ease}
.search-results .sr-item{display:block;padding:10px 12px;border-radius:8px;color:var(--ink)}
.search-results .sr-item:hover{background:var(--brand-soft);text-decoration:none}
.search-results .sr-item b{font-size:13.5px;font-weight:650;letter-spacing:-.1px}
.search-results .sr-item span{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}
.search-results .sr-empty{padding:15px;color:var(--muted);font-size:13px;text-align:center}
@keyframes pop{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:none}}

/* ---------- Layout / Sidebar ---------- */
.layout{display:flex;min-height:calc(100vh - 60px);align-items:flex-start}
.sidebar{width:256px;flex:none;position:sticky;top:60px;height:calc(100vh - 60px);overflow:auto;
  background:var(--card);border-right:1px solid var(--border);padding:16px 12px;display:flex;flex-direction:column}
#sideNav{flex:1;display:flex;flex-direction:column;gap:1px}
.nav-sec{display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;text-align:left;
  background:none;border:none;cursor:pointer;font-family:inherit;
  font-size:10.5px;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);
  font-weight:700;margin:12px 0 2px;padding:6px 11px;border-radius:8px;transition:color .13s,background .13s}
.nsec:first-child .nav-sec{margin-top:0}
.nav-sec:hover{color:var(--ink);background:var(--card2)}
.nav-sec .chev{flex:none;transition:transform .22s ease;color:var(--border-strong)}
.nsec.closed .nav-sec .chev{transform:rotate(-90deg)}
.nsec-body{overflow:hidden;max-height:620px;opacity:1;transition:max-height .24s ease,opacity .18s ease}
.nsec.closed .nsec-body{max-height:0;opacity:0}
.nav-link{display:flex;align-items:center;gap:9px;padding:7.5px 11px 7.5px 13px;border-radius:8px;color:var(--muted);
  font-size:13.5px;font-weight:550;transition:background .13s,color .13s}
.nav-link:hover{background:var(--card2);color:var(--ink);text-decoration:none}
.nav-link.active{background:var(--brand-soft);color:var(--brand);font-weight:650}
.nav-link.active::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);flex:none}
.side-foot{margin-top:14px}
.comm-cta{display:flex;gap:10px;align-items:center;padding:12px 13px;border-radius:var(--radius);color:var(--ink);
  background:var(--brand-soft);border:1px solid color-mix(in srgb,var(--brand) 22%,var(--border));
  font-size:12.5px;line-height:1.4;font-weight:600;transition:.16s}
.comm-cta:hover{text-decoration:none;border-color:var(--brand);box-shadow:var(--shadow)}
.comm-cta-icon,.comm-cta-emoji{color:var(--brand);flex:none;display:flex;align-items:center}
.sidebar-backdrop{display:none}

.main{flex:1;min-width:0;padding:32px 36px 50px;outline:none}
.footer{margin-top:56px;padding-top:20px;border-top:1px solid var(--border);color:var(--muted);font-size:12.5px}
.footer-meta{margin-top:8px;font-size:12px}

/* ---------- Page & typography ---------- */
#page{max-width:960px;margin:0 auto;animation:fadeUp .3s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.page-head{margin-bottom:26px}
.page-kicker{display:inline-flex;align-items:center;gap:7px;font-size:11px;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--brand);margin-bottom:12px}
.page-kicker::before{content:"";width:14px;height:2px;background:var(--brand);border-radius:2px}
.page-title{font-size:clamp(25px,3.3vw,36px);line-height:1.16;letter-spacing:-.8px;font-weight:800}
.page-sub{color:var(--muted);margin-top:10px;font-size:15.5px;max-width:720px}
h2.sec-h{font-size:19px;margin:38px 0 14px;letter-spacing:-.4px;font-weight:750;display:flex;align-items:baseline;gap:12px}
h2.sec-h::after{content:"";flex:1;height:1px;background:var(--border);align-self:center}
h3{font-size:16px;margin:22px 0 8px;letter-spacing:-.2px;font-weight:700}
p{margin:11px 0}
ul,ol{padding-left:22px;margin:11px 0}
li{margin:6px 0}
code{font-family:var(--mono);font-size:.86em;background:var(--card2);border:1px solid var(--border);
  border-radius:5px;padding:1.5px 6px;color:var(--ink)}
.lead{font-size:17px;color:var(--ink);line-height:1.62}
strong,b{font-weight:700}

/* ---------- Cards & grids ---------- */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow);margin:15px 0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}
.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:16px 18px;box-shadow:var(--shadow);transition:border-color .15s,transform .15s}
.stat:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.stat .num{font-size:26px;font-weight:800;letter-spacing:-.6px;color:var(--ink);font-variant-numeric:tabular-nums}
.stat .num small{font-size:13px;color:var(--green);font-weight:700}
.stat .lbl{font-size:12.5px;color:var(--muted);margin-top:3px;line-height:1.45}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-radius:16px;padding:48px 40px;color:#fff;isolation:isolate;
  box-shadow:var(--shadow-lg);
  background:
    radial-gradient(700px 340px at 85% -30%,rgba(31,91,240,.35),transparent 60%),
    radial-gradient(520px 300px at -5% 110%,rgba(242,107,29,.16),transparent 60%),
    linear-gradient(120deg,#081630 0%,#0a1f4d 100%)}
.hero::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:42px 42px;
  -webkit-mask-image:radial-gradient(600px 340px at 78% 8%,#000 20%,transparent 75%);
  mask-image:radial-gradient(600px 340px at 78% 8%,#000 20%,transparent 75%)}
.hero::after{content:"";position:absolute;left:40px;right:40px;bottom:0;height:1px;z-index:2;
  background:linear-gradient(90deg,#f26b1d 0 33%,rgba(255,255,255,.9) 33% 66%,#22c07a 66% 100%);opacity:.5}
.hero .tag{position:relative;z-index:2;display:inline-flex;align-items:center;gap:8px;
  border:1px solid rgba(255,255,255,.25);color:#cfe0ff;
  border-radius:999px;font-size:11.5px;font-weight:650;padding:5px 14px;margin-bottom:18px;letter-spacing:.08em}
.hero .tag::before{content:"";width:6px;height:6px;border-radius:50%;background:#f26b1d;box-shadow:0 0 8px #f26b1d}
.hero h1{position:relative;z-index:2;font-size:clamp(28px,4.2vw,42px);letter-spacing:-1.3px;line-height:1.1;
  max-width:680px;font-weight:800}
.hero p{position:relative;z-index:2;margin-top:14px;color:#aebfe6;max-width:620px;font-size:16px}
.hero p b{color:#fff;font-weight:700}
.hero-btns{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;position:relative;z-index:2}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:9px;font-weight:700;font-size:14px;
  border:1px solid transparent;cursor:pointer;transition:transform .14s,box-shadow .14s,background .14s,border-color .14s;
  font-family:inherit;letter-spacing:-.1px}
.btn:hover{text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn.primary{color:#fff;background:var(--brand);box-shadow:0 6px 16px -6px rgba(31,91,240,.5)}
.btn.primary:hover{background:#1951d8;transform:translateY(-1px);box-shadow:0 10px 22px -8px rgba(31,91,240,.55)}
.hero .btn.primary{background:#fff;color:var(--brand-deep);box-shadow:0 8px 20px -8px rgba(0,0,0,.5)}
.hero .btn.primary:hover{background:#eef3fe}
.btn.ghost{background:rgba(255,255,255,.06);color:#e8eefc;border-color:rgba(255,255,255,.22)}
.btn.ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4)}
.btn.outline{background:var(--card);border-color:var(--border);color:var(--ink)}
.btn.outline:hover{border-color:var(--brand);color:var(--brand)}
.btn.small{padding:7px 14px;font-size:13px;border-radius:8px}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- Content components ---------- */
.ex{background:var(--green-bg);border:1px solid color-mix(in srgb,var(--green) 24%,var(--border));
  border-left:3px solid var(--green);border-radius:10px;padding:16px 18px;margin:17px 0}
.ex .ex-t{font-weight:750;color:var(--green);font-size:13px;letter-spacing:.02em;text-transform:uppercase;
  display:flex;align-items:center;gap:7px;margin-bottom:7px}
.note{background:var(--amber-bg);border:1px solid color-mix(in srgb,var(--accent) 26%,var(--border));
  border-left:3px solid var(--accent);border-radius:10px;padding:13px 17px;margin:17px 0;font-size:14px}
.note b{color:var(--accent)}
.blue-note{background:var(--blue-bg);border:1px solid color-mix(in srgb,var(--brand) 22%,var(--border));
  border-left:3px solid var(--brand);border-radius:10px;padding:13px 17px;margin:17px 0;font-size:14px}
.blue-note b{color:var(--brand)}
.pts{list-style:none;padding-left:0;margin:13px 0}
.pts li{position:relative;padding-left:28px;margin:9px 0}
.pts li::before{content:"✓";position:absolute;left:0;top:2px;width:18px;height:18px;border-radius:5px;
  background:var(--green-bg);border:1px solid color-mix(in srgb,var(--green) 30%,transparent);
  color:var(--green);font-size:11px;font-weight:900;display:flex;align-items:center;justify-content:center;line-height:18px}
.xpts li::before{content:"✕";background:var(--red-bg);color:var(--red);
  border-color:color-mix(in srgb,var(--red) 30%,transparent)}
.tblwrap{overflow-x:auto;margin:15px 0;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);background:var(--card)}
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px;min-width:520px}
.tbl th{background:var(--card2);text-align:left;padding:11px 15px;font-size:11px;text-transform:uppercase;
  letter-spacing:.07em;color:var(--muted);border-bottom:1px solid var(--border);white-space:nowrap;font-weight:700}
.tbl td{padding:11px 15px;border-bottom:1px solid var(--border);vertical-align:top}
.tbl tr:last-child td{border-bottom:none}
.tbl tbody tr{transition:background .12s}
.tbl tr:hover td{background:var(--card2)}
.tbl .r{text-align:right;font-variant-numeric:tabular-nums;font-family:var(--mono);font-size:13px}
.tbl .hl td{background:var(--brand-soft);font-weight:700}
.pill{display:inline-block;font-size:10px;font-weight:750;border-radius:5px;padding:2.5px 8px;letter-spacing:.06em;text-transform:uppercase}
.pill.new{background:var(--green-bg);color:var(--green)}
.pill.old2{background:var(--red-bg);color:var(--red)}
.pill.info{background:var(--brand-soft);color:var(--brand)}
.chip-row{display:flex;gap:8px;flex-wrap:wrap;margin:11px 0}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;border:1px solid var(--border);
  border-radius:8px;padding:5px 12px;color:var(--muted);background:var(--card);transition:.15s}
a.chip:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}
.vs{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:17px 0}
.vs .col{border-radius:var(--radius);padding:17px 19px;border:1px solid var(--border)}
.vs .col.old{background:var(--red-bg);border-color:color-mix(in srgb,var(--red) 20%,var(--border))}
.vs .col.new{background:var(--green-bg);border-color:color-mix(in srgb,var(--green) 22%,var(--border))}
.vs .col h4{font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:9px;display:flex;
  align-items:center;gap:8px;font-weight:700}
.vs .col.old h4{color:var(--red)}.vs .col.new h4{color:var(--green)}
.vs .col ul{padding-left:18px;font-size:14px}
.ratebar{display:flex;align-items:center;gap:11px;font-size:13.5px}
.ratebar .track{flex:none;width:120px;height:7px;border-radius:99px;background:var(--border);overflow:hidden}
.ratebar .fill{height:100%;border-radius:99px;background:var(--brand)}

/* ---------- Timeline ---------- */
.tl{position:relative;margin:22px 0;padding-left:26px}
.tl::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;border-radius:2px;background:var(--border)}
.tl-item{position:relative;padding:0 0 22px 16px}
.tl-item:last-child{padding-bottom:4px}
.tl-item::before{content:"";position:absolute;left:-26px;top:5px;width:13px;height:13px;border-radius:50%;
  background:var(--card);border:2.5px solid var(--brand)}
.tl-item.done::before{border-color:var(--green);background:var(--green)}
.tl-item .tl-date{font-size:11px;font-weight:750;color:var(--brand);text-transform:uppercase;letter-spacing:.07em}
.tl-item b{font-size:15px}
.tl-item p{margin:4px 0;font-size:14px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;margin:15px 0}
.faq-item{border-bottom:1px solid var(--border);transition:background .14s}
.faq-item:last-child{border-bottom:none}
.faq-q{width:100%;text-align:left;background:none;border:none;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;
  gap:14px;align-items:center;padding:16px 18px;font-size:14.5px;font-weight:650;font-family:inherit;letter-spacing:-.1px}
.faq-q:hover{color:var(--brand)}
.faq-q .plus{flex:none;width:24px;height:24px;border-radius:7px;border:1px solid var(--border);background:var(--card);
  display:flex;align-items:center;justify-content:center;font-size:15px;transition:.2s;color:var(--muted)}
.faq-item.open .plus{transform:rotate(45deg);background:var(--brand-deep);color:#fff;border-color:var(--brand-deep)}
.faq-item.open{background:var(--card)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .25s ease;padding:0 18px}
.faq-item.open .faq-a{max-height:600px;padding:0 18px 17px}
.faq-a p{font-size:14px;color:var(--muted)}
.faq-a p b{color:var(--ink)}

/* ---------- Calculator ---------- */
.calc{display:grid;grid-template-columns:350px 1fr;gap:18px;align-items:start}
.calc .panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.field{margin-bottom:15px}
.field label{display:block;font-size:13px;font-weight:650;margin-bottom:6px;color:var(--ink);letter-spacing:-.1px}
.field .hint{font-size:11.5px;color:var(--muted);font-weight:500}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--border);border-radius:8px;padding:9.5px 12px;
  font-size:14px;font-family:inherit;color:var(--ink);background:var(--card2);outline:none;
  transition:border-color .14s,box-shadow .14s,background .14s;caret-color:var(--brand)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);background:var(--card);box-shadow:0 0 0 3px var(--ring)}
.seg{display:flex;border:1px solid var(--border);border-radius:9px;overflow:hidden;background:var(--card2);padding:3px;gap:3px}
.seg button{flex:1;border:none;border-radius:6px;background:transparent;color:var(--muted);padding:8px 4px;font-size:13px;
  font-weight:600;cursor:pointer;font-family:inherit;transition:.15s}
.seg button.on{background:var(--brand-deep);color:#fff}
.result-card{border-radius:var(--radius);padding:20px;border:1px solid var(--border);background:var(--card)}
.result-card h4{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:9px;font-weight:700}
.result-big{font-size:32px;font-weight:800;letter-spacing:-.8px;color:var(--ink);font-variant-numeric:tabular-nums}
.verdict{background:var(--green-bg);border:1px solid color-mix(in srgb,var(--green) 28%,var(--border));
  border-radius:var(--radius);padding:17px 20px;display:flex;gap:14px;align-items:center;
  justify-content:space-between;flex-wrap:wrap}
.verdict .v-num{font-size:26px;font-weight:800;letter-spacing:-.5px;color:var(--green);font-variant-numeric:tabular-nums}
.mini-bars{display:flex;gap:11px;align-items:flex-end;height:116px;margin-top:12px}
.mini-bars .mb{flex:1;display:flex;flex-direction:column;align-items:center;gap:7px}
.mini-bars .mb .colb{width:100%;max-width:74px;border-radius:6px 6px 2px 2px;transition:height .45s cubic-bezier(.2,.7,.3,1.05)}
.mini-bars small{font-size:11.5px;color:var(--muted);text-align:center;line-height:1.3}

/* ---------- Community ---------- */
.comm-head{display:flex;gap:14px;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;margin-bottom:6px}
.comm-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0}
.ctab{border:1px solid var(--border);background:var(--card);color:var(--muted);border-radius:8px;padding:7.5px 14px;
  font-size:12.5px;font-weight:600;cursor:pointer;font-family:inherit;transition:.15s}
.ctab:hover{border-color:var(--border-strong);color:var(--ink)}
.ctab.on{background:var(--brand-deep);color:#fff;border-color:var(--brand-deep)}
.thread{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;margin:12px 0;
  box-shadow:var(--shadow);display:flex;gap:14px;cursor:pointer;transition:border-color .15s,transform .15s,box-shadow .15s}
.thread:hover{border-color:var(--border-strong);transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.avatar{width:40px;height:40px;border-radius:9px;flex:none;display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:14px;box-shadow:inset 0 1px 0 rgba(255,255,255,.18)}
.thread-body{flex:1;min-width:0}
.thread-title{font-size:15px;font-weight:700;line-height:1.35;letter-spacing:-.15px}
.thread-meta{font-size:12px;color:var(--muted);margin-top:4px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.thread-excerpt{font-size:13.5px;color:var(--muted);margin-top:7px;display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden}
.thread-stats{display:flex;gap:14px;margin-top:10px;font-size:12.5px;color:var(--muted);align-items:center}
.cat{font-size:9.5px;font-weight:800;border-radius:5px;padding:2.5px 8px;letter-spacing:.07em;text-transform:uppercase;
  background:var(--brand-soft);color:var(--brand)}
.like-btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);background:var(--card);color:var(--muted);
  border-radius:999px;padding:4px 12px;font-size:12px;font-weight:650;cursor:pointer;font-family:inherit;transition:.14s}
.like-btn:hover{border-color:var(--red);color:var(--red)}
.like-btn.liked{background:var(--red-bg);color:var(--red);border-color:color-mix(in srgb,var(--red) 35%,var(--border))}
.cmt{display:flex;gap:12px;margin:15px 0}
.cmt .avatar{width:32px;height:32px;font-size:12px;border-radius:8px}
.cmt-body{flex:1;min-width:0;background:var(--card2);border:1px solid var(--border);border-radius:10px;padding:11px 15px}
.cmt-head{font-size:12.5px;color:var(--muted);display:flex;gap:9px;align-items:baseline;flex-wrap:wrap}
.cmt-head b{color:var(--ink);font-size:13px}
.cmt-text{font-size:14px;margin-top:5px;white-space:pre-wrap;word-wrap:break-word}
.cmt-actions{display:flex;gap:14px;margin-top:9px;font-size:12px;font-weight:700;color:var(--muted)}
.cmt-actions button{border:none;background:none;color:var(--muted);font-size:12px;font-weight:700;cursor:pointer;font-family:inherit;padding:0}
.cmt-actions button:hover{color:var(--brand)}
.cmt-actions .lk.liked{color:var(--red)}
.reply-list{margin-left:44px;border-left:2px solid var(--border);padding-left:15px}
.composer textarea{width:100%;resize:vertical;min-height:82px}
.guidelines{border:1px dashed var(--border-strong);border-radius:var(--radius);padding:14px 16px;background:var(--card2);
  font-size:13px;color:var(--muted)}
.guidelines b{color:var(--ink)}
.poll .opt{position:relative;border:1px solid var(--border);border-radius:9px;padding:10px 14px;margin:8px 0;cursor:pointer;
  font-size:13.5px;font-weight:600;overflow:hidden;background:var(--card2);transition:border-color .14s}
.poll .opt .pf{position:absolute;left:0;top:0;bottom:0;background:var(--brand-soft);transition:width .5s ease}
.poll .opt .txt{position:relative;display:flex;justify-content:space-between}
.poll .opt:hover{border-color:var(--brand)}
.localnote{font-size:12px;color:var(--muted);background:var(--amber-bg);border:1px solid color-mix(in srgb,var(--accent) 24%,var(--border));
  border-radius:9px;padding:10px 14px;margin:12px 0}

.comm-grid{display:grid;grid-template-columns:1fr 320px;gap:15px;align-items:start}
@media (max-width:1080px){.comm-grid{grid-template-columns:1fr}}

/* ---------- Modal / toast ---------- */
.modal-backdrop{position:fixed;inset:0;background:rgba(8,13,28,.55);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal-backdrop.open{display:flex}
.modal{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:26px;max-width:400px;width:100%;
  box-shadow:var(--shadow-lg);animation:pop .2s ease}
.modal h3{margin-bottom:8px}
.modal p{font-size:14px;color:var(--muted)}
.modal input{width:100%;margin:14px 0;border:1px solid var(--border);border-radius:8px;padding:11px 13px;font-size:15px;
  background:var(--card2);color:var(--ink);outline:none;font-family:inherit}
.modal input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--ring)}
.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,70px);background:#0d1526;color:#fff;
  border-radius:9px;padding:11px 20px;font-size:13.5px;font-weight:600;z-index:120;
  opacity:0;transition:.25s ease;pointer-events:none;max-width:90vw;box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- Converter widget ---------- */
.convert-out{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-top:15px}
.convert-out .cbox{border-radius:10px;padding:16px;border:1px solid var(--border);background:var(--card)}
.convert-out .cbox h5{font-size:11px;text-transform:uppercase;letter-spacing:.07em;margin-bottom:7px;font-weight:700}

/* ---------- SEO / AdSense / extras ---------- */
.ad-slot{border:1.5px dashed var(--border-strong);background:var(--card2);border-radius:10px;
  display:flex;align-items:center;justify-content:center;margin:24px 0;min-height:100px;
  color:var(--muted);font-size:9.5px;font-weight:700;letter-spacing:.24em;text-transform:uppercase;opacity:.75}
.side-ad{min-height:250px;margin:15px 0 0;position:sticky;top:76px}
@media (max-width:1260px){.side-ad{display:none}}
.crumbs{font-size:12.5px;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.review-note{margin-top:28px;padding:11px 15px;border-radius:9px;background:var(--card2);
  border:1px solid var(--border);font-size:12.5px;color:var(--muted)}
.rel-card{display:block;color:var(--ink);margin:0;transition:border-color .15s,transform .15s,box-shadow .15s}
.rel-card:hover{text-decoration:none;border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.rel-card b{display:block;font-size:14px;letter-spacing:-.1px;font-weight:700}
.rel-card span{display:block;font-size:12.5px;color:var(--muted);margin-top:6px;line-height:1.5}
.consent{position:fixed;bottom:18px;left:18px;z-index:110;max-width:360px;animation:fadeUp .3s ease}
.consent-box{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:17px 19px;box-shadow:var(--shadow-lg)}
.consent-box p{margin:0}
.consent-txt{font-size:12.5px;color:var(--muted);margin-top:7px!important;line-height:1.55}
.consent-btns{display:flex;gap:10px;margin-top:13px}
@media (max-width:520px){.consent{left:12px;right:12px;max-width:none;bottom:12px}}

/* ---------- Responsive ---------- */
#menuBtn{display:none}
@media (max-width:1080px){
  .grid4{grid-template-columns:repeat(2,1fr)}
  .calc{grid-template-columns:1fr}
}
@media (max-width:880px){
  #menuBtn{display:inline-flex}
  .sidebar{position:fixed;left:0;top:0;bottom:0;transform:translateX(-105%);transition:transform .25s ease;z-index:80;width:278px;height:100vh}
  .sidebar.open{transform:none;box-shadow:0 0 60px rgba(0,0,0,.35)}
  .sidebar-backdrop.show{display:block;position:fixed;inset:0;background:rgba(8,13,28,.5);z-index:70}
  .main{padding:22px 16px 36px}
  .grid2,.grid3,.grid4,.vs,.convert-out{grid-template-columns:1fr}
  .hero{padding:32px 22px}
  .hero::after{left:22px;right:22px}
  .searchwrap input::placeholder{font-size:12.5px}
  .brand-name small{display:none}
}
@media (max-width:420px){
  .topbar{padding:0 12px;gap:10px}
  .hero{padding:28px 20px}
  .hero::after{left:20px;right:20px}
}
@media print{
  .topbar,.sidebar,.footer,.hero-btns,.toc-wrap,.top-btn,.rail-fab,.palette-backdrop{display:none!important}
  body{background:#fff}
  .main{padding:0}
}

/* ================================================================
   Interactive navigation components
   ================================================================ */

/* ---------- kbd chips ---------- */
.kbd{display:inline-flex;align-items:center;justify-content:center;min-width:22px;height:21px;padding:0 6px;
  font-family:inherit;font-size:10.5px;font-weight:650;color:var(--muted);
  background:var(--card);border:1px solid var(--border);border-bottom-width:2px;border-radius:6px;line-height:1}

/* ---------- Topbar search trigger ---------- */
.search-trigger{cursor:pointer;text-align:left;font-family:inherit;font-size:14px;color:var(--muted);padding-right:10px}
.search-trigger:hover{border-color:var(--border-strong);background:var(--card)}
.search-trigger-txt{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media (max-width:640px){.search-trigger .kbd{display:none}}

/* ---------- Command palette ---------- */
.palette-backdrop{position:fixed;inset:0;z-index:150;display:none;justify-content:center;align-items:flex-start;
  padding:12vh 16px 20px;background:rgba(8,13,28,.45);
  -webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}
.palette-backdrop.open{display:flex}
.palette{width:min(620px,100%);background:var(--card);border:1px solid var(--border);border-radius:16px;
  box-shadow:var(--shadow-lg);overflow:hidden;animation:palIn .18s cubic-bezier(.2,.7,.3,1)}
@keyframes palIn{from{opacity:0;transform:translateY(-12px) scale(.985)}to{opacity:1;transform:none}}
.palette-input{display:flex;align-items:center;gap:11px;padding:15px 16px;border-bottom:1px solid var(--border);color:var(--muted)}
.palette-input input{flex:1;min-width:0;border:none;background:transparent;outline:none;color:var(--ink);
  font-size:15.5px;font-family:inherit}
.palette-input input::placeholder{color:var(--muted)}
.palette-results{max-height:52vh;overflow:auto;padding:7px}
.pal-item{display:block;padding:11px 12px;border-radius:10px;color:var(--ink);transition:background .1s}
.pal-item:hover{text-decoration:none}
.pal-item b{display:block;font-size:14px;font-weight:650;letter-spacing:-.1px}
.pal-item span{display:block;font-size:12.5px;color:var(--muted);margin-top:3px;line-height:1.45;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pal-item.at{background:var(--brand-soft)}
.pal-item.at b{color:var(--brand)}
.pal-hint,.pal-empty{padding:22px 16px;text-align:center;font-size:13.5px;color:var(--muted)}
.palette-foot{display:flex;gap:18px;flex-wrap:wrap;padding:10px 16px;border-top:1px solid var(--border);
  font-size:11.5px;color:var(--muted)}
.palette-foot span{display:inline-flex;align-items:center;gap:5px}

/* ---------- Sidebar: hide-menu button + floating restore tab ---------- */
.rail-collapse{display:flex;align-items:center;gap:8px;width:100%;margin-bottom:11px;padding:8px 11px;
  border:1px solid var(--border);border-radius:8px;background:var(--card);color:var(--muted);
  font-family:inherit;font-size:12.5px;font-weight:650;cursor:pointer;transition:.15s}
.rail-collapse:hover{color:var(--ink);border-color:var(--border-strong)}
.rail-fab{display:none;position:fixed;left:0;top:44%;z-index:60;padding:13px 13px 13px 9px;border:none;
  border-radius:0 12px 12px 0;background:var(--brand-deep);color:#fff;cursor:pointer;
  box-shadow:var(--shadow-lg);transition:padding .16s}
.rail-fab:hover{padding-right:17px}
@media (min-width:881px){
  body.no-rail .sidebar{display:none}
  body.no-rail .rail-fab{display:flex}
}

/* ---------- On-this-page TOC rail ---------- */
.content-wrap.has-toc{display:grid;grid-template-columns:minmax(0,1fr) 215px;gap:38px;align-items:start}
.toc-wrap{display:none}
@media (min-width:1241px){.toc-wrap{display:block}}
.toc{position:sticky;top:78px;max-height:calc(100vh - 100px);overflow:auto;
  border-left:2px solid var(--border);padding-left:15px}
.toc-title{font-size:11px;font-weight:750;text-transform:uppercase;letter-spacing:.09em;color:var(--ink);margin-bottom:9px}
.toc-link{display:block;font-size:12.5px;color:var(--muted);padding:5px 0;line-height:1.42;
  border-left:2px solid transparent;margin-left:-17px;padding-left:15px;transition:color .14s,border-color .14s}
.toc-link:hover{color:var(--brand);text-decoration:none}
.toc-link.at{color:var(--brand);font-weight:650;border-left-color:var(--brand)}
.toc-sub{margin-left:-17px;padding-left:27px;font-size:12px;padding-top:3.5px;padding-bottom:3.5px}
/* heading anchor links */
h2.sec-h{position:relative}
.hlink{position:absolute;left:-24px;top:0;opacity:0;transition:opacity .16s;text-decoration:none;
  color:var(--brand);font-weight:700;font-size:15px}
.hlink::after{content:"#"}
h2.sec-h:hover .hlink,.hlink:focus{opacity:1}
.hlink:hover{text-decoration:none}

/* ---------- Back to top ---------- */
.top-btn{position:fixed;right:18px;bottom:18px;z-index:95;width:42px;height:42px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;background:var(--card);color:var(--ink);
  border:1px solid var(--border);box-shadow:var(--shadow-lg);cursor:pointer;
  opacity:0;transform:translateY(10px);pointer-events:none;transition:.22s}
.top-btn.show{opacity:1;transform:none;pointer-events:auto}
.top-btn:hover{border-color:var(--brand);color:var(--brand)}
@media (max-width:880px){.top-btn{right:14px;bottom:14px}}

/* ---------- Rich footer ---------- */
.footer{margin-top:52px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:26px;margin-bottom:24px}
.foot-brandname{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:800;letter-spacing:-.4px;color:var(--ink);margin-bottom:10px}
.foot-brandname .brand-badge{width:30px;height:30px;font-size:16px;border-radius:8px}
.foot-brandname em{font-style:normal;color:var(--accent)}
.foot-brand p{font-size:13px;color:var(--muted);margin:7px 0;line-height:1.55}
.foot-disc{font-size:11.5px!important}
.foot-col h5{font-size:11px;font-weight:750;text-transform:uppercase;letter-spacing:.09em;color:var(--ink);margin:4px 0 10px}
.foot-col a{display:block;color:var(--muted);font-size:13px;padding:3.5px 0;transition:color .13s}
.foot-col a:hover{color:var(--brand);text-decoration:none}
.foot-base{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;
  border-top:1px solid var(--border);padding-top:15px;font-size:12px;color:var(--muted)}
@media (max-width:880px){.foot-grid{grid-template-columns:1fr 1fr;gap:18px}}

@media (max-width:640px){
  .palette-backdrop{padding-top:8vh}
}

/* ================================================================
   CARD-DRIVEN DESIGN (Bento home + Chapter cards)
   ================================================================ */

/* ---------- Bento grid (homepage) ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.bc{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:26px;
  box-shadow:var(--shadow);position:relative;overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
a.bc{color:var(--ink)}
a.bc:hover{text-decoration:none;transform:translateY(-3px);box-shadow:0 24px 50px -18px rgba(23,18,10,.28);border-color:var(--border-strong)}
.bc-3{grid-column:span 3}.bc-4{grid-column:span 4}.bc-5{grid-column:span 5}
.bc-6{grid-column:span 6}.bc-7{grid-column:span 7}.bc-8{grid-column:span 8}
.bc-h{font-size:17px;font-weight:800;letter-spacing:-.3px;margin-bottom:8px}
.bc p{font-size:13.5px;color:var(--muted);margin:6px 0;line-height:1.55}
.bc-sub-h{grid-column:span 12;font-size:19px;font-weight:800;letter-spacing:-.4px;
  display:flex;align-items:baseline;gap:12px;margin-top:14px}
.bc-sub-h::after{content:"";flex:1;height:1px;background:var(--border);align-self:center}

/* hero tile */
.bc-hero{grid-column:span 8;display:flex;flex-direction:column;justify-content:center;color:#f4f0e8;
  background:radial-gradient(500px 260px at 90% -10%,rgba(242,107,29,.25),transparent 60%),
    linear-gradient(118deg,#131110 0%,#1c1713 100%);border-color:#131110;min-height:380px}
.bc-tag{display:inline-flex;align-items:center;gap:8px;align-self:flex-start;
  border:1px solid rgba(244,240,232,.28);color:#e8dfd0;border-radius:999px;
  font-size:10.5px;font-weight:750;letter-spacing:.09em;padding:6px 14px;margin-bottom:20px}
.bc-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.bc-hero h1{font-family:var(--serif);font-size:clamp(30px,3.8vw,44px);line-height:1.12;letter-spacing:-1px;font-weight:700}
.bc-hero h1 em{font-style:italic;color:#ffb47e}
.bc-hero p{color:#c9c0b4;font-size:15.5px;max-width:520px;margin-top:14px}
.bc-hero p b{color:#f4f0e8}
.bc-hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn-white{display:inline-flex;align-items:center;gap:8px;background:#f4f0e8;color:#151210;border-radius:10px;
  padding:11px 20px;font-size:14px;font-weight:750;transition:.15s}
.btn-white:hover{background:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-line{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(244,240,232,.35);color:#f4f0e8;
  border-radius:10px;padding:11px 20px;font-size:14px;font-weight:650;transition:.15s}
.btn-line:hover{border-color:rgba(244,240,232,.75);background:rgba(244,240,232,.07);text-decoration:none}

/* today tile */
.bc-today{grid-column:span 4;display:flex;flex-direction:column}
.bc-chip{align-self:flex-start;font-size:10px;font-weight:800;letter-spacing:.1em;color:#fff;
  background:linear-gradient(92deg,var(--accent),#ff8f47);border-radius:5px;padding:3.5px 9px;margin-bottom:14px}
.bc-big-date{font-family:var(--serif);font-size:38px;line-height:1.05;font-weight:700;letter-spacing:-.5px}
.bc-row,.bc-row.hot{display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:11px 4px;border-bottom:1px solid var(--border);font-size:13px}
.bc-row:last-child{border-bottom:none}
.bc-row span{color:var(--muted)}
.bc-row b{font-weight:650}
.bc-row.hot{margin:8px -10px;border:none;background:var(--accent-soft);
  border:1px solid color-mix(in srgb,var(--accent) 30%,var(--border));border-radius:12px;padding:12px 14px}
.bc-row.hot b{color:var(--accent)}
.bc-lead{font-size:14px!important;color:var(--ink)!important}
.bc-note{font-size:12px!important;margin-top:12px!important;padding-top:10px;border-top:1px dashed var(--border)}

/* stat tiles */
.bc-stat{display:block;padding:24px 26px;min-height:150px}
.bc-stat::after{content:"↗";position:absolute;top:16px;right:18px;font-size:15px;color:var(--border-strong);transition:.18s}
.bc-stat:hover::after{color:var(--accent);transform:translate(2px,-2px)}
.bc-num{font-family:var(--serif);font-size:42px;font-weight:700;letter-spacing:-1px;line-height:1.05;
  font-variant-numeric:tabular-nums}
.bc-num small{font-size:14px;font-family:-apple-system,"Segoe UI",Roboto,sans-serif;font-weight:800;color:var(--green);margin-left:8px}
.bc-num-hot{color:var(--accent)}
.bc-lbl{font-size:13px;color:var(--ink);font-weight:650;margin-top:8px;line-height:1.4}
.bc-lbl span{display:block;color:var(--muted);font-weight:500;font-size:12px;margin-top:2px}

/* tool tiles */
.bc-tool{min-height:210px;display:flex;flex-direction:column}
.bc-glyph{position:absolute;top:6px;right:18px;font-family:var(--serif);font-size:88px;font-weight:700;
  line-height:1;color:transparent;-webkit-text-stroke:1.5px var(--border-strong);opacity:.85;transition:.2s}
.bc-tool:hover .bc-glyph{-webkit-text-stroke:1.5px var(--accent)}
.bc-go2{margin-top:auto;padding-top:14px;font-size:13px;font-weight:750;color:var(--brand)}

/* link rows + comm */
.bcard-link{min-height:128px}
.bcard-link::after{content:"→";position:absolute;top:18px;right:20px;font-size:16px;font-weight:700;
  color:var(--border-strong);transition:.18s}
.bcard-link:hover::after{color:var(--accent);transform:translateX(4px)}
.bc-comm{display:flex;align-items:center;gap:26px;justify-content:space-between;color:#f4f0e8;
  background:linear-gradient(120deg,#14243f,#1d2f52);border-color:#14243f}
.bc-comm .bc-h{font-size:20px;color:#f4f0e8}
.bc-comm p{color:#b9c6e2}
.bc-comm .btn-white{flex:none}
.bc-tl .tl{margin:6px 0 0}

@media (max-width:1080px){
  .bc-3{grid-column:span 6}
  .bc-4,.bc-5{grid-column:span 6}
  .bc-hero,.bc-today,.bc-6,.bc-7{grid-column:span 12}
}
@media (max-width:640px){
  .bc-3{grid-column:span 12}
  .bc-stat{min-height:0}
  .bc-hero{min-height:0}
  .bc-comm{flex-direction:column;align-items:flex-start;gap:16px}
}

/* ---------- Chapter cards (articles) ---------- */
.sec-card{position:relative;background:var(--card);border:1px solid var(--border);border-radius:20px;
  padding:28px 30px 22px;margin:22px 0;box-shadow:var(--shadow);overflow:hidden}
.sec-card>.sec-h{margin-top:0}
.sec-num{position:absolute;top:-14px;right:8px;font-family:var(--serif);font-size:118px;font-weight:700;
  line-height:1;color:transparent;-webkit-text-stroke:1.5px color-mix(in srgb,var(--accent) 55%,var(--border));
  opacity:.5;pointer-events:none;user-select:none}
@media (max-width:640px){.sec-card{padding:22px 18px 18px}.sec-num{font-size:84px;top:-8px}}

/* ---------- TOC as floating card ---------- */
.toc{position:sticky;top:78px;max-height:calc(100vh - 100px);overflow:auto;
  background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);
  padding:16px 15px;border-left:1px solid var(--border)}
.toc-title{font-size:10.5px;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:var(--ink);
  margin-bottom:9px;padding-bottom:9px;border-bottom:1px solid var(--border)}
.toc-link{display:block;font-size:12.5px;color:var(--muted);padding:5px 9px;line-height:1.42;
  border-radius:7px;border-left:none;margin-left:0;transition:color .13s,background .13s}
.toc-link:hover{color:var(--brand);background:var(--card2);text-decoration:none}
.toc-link.at{color:var(--brand);font-weight:650;background:var(--brand-soft)}
.toc-sub{margin-left:0;padding-left:21px;font-size:12px}

/* ---------- Sidebar links get card-pop ---------- */
.nav-link{border:1px solid transparent}
.nav-link:hover{background:var(--card2);border-color:var(--border);box-shadow:var(--shadow)}
.nav-link.active{background:var(--card);border-color:var(--border);box-shadow:var(--shadow);
  color:var(--brand);font-weight:700}