:root {
  --ink:#1c1c1e;--paper:#f8f7f4;--white:#ffffff;--mid:#6b6b6b;
  --rule:#d8d5cd;--rule-light:#ece9e2;
  --accent:#b5341c;--accent-bg:#fdf1ee;
  --blue:#1a3a5c;--blue-bg:#edf2f8;
  --green:#1a4228;--green-bg:#edf5f0;
  --amber:#6b3d00;--amber-bg:#fdf5e6;
  --serif:'Libre Baskerville',Georgia,serif;
  --sans:'Source Sans 3',system-ui,sans-serif;
  --mono:'Source Code Pro',monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}

header{background:var(--ink);color:var(--white);position:sticky;top:0;z-index:200;border-bottom:2px solid var(--accent)}
.hdr{max-width:1140px;margin:0 auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;height:56px}
.logo{font-family:var(--sans);font-weight:700;font-size:0.95rem;letter-spacing:.01em;color:var(--white);text-decoration:none;flex-shrink:0}
.logo span{color:#e09080;font-weight:400}
nav{display:flex;gap:2px}
nav a{color:#a8a8a8;text-decoration:none;font-size:0.78rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:6px 11px;border-radius:3px;transition:color .15s,background .15s}
nav a:hover{color:var(--white);background:rgba(255,255,255,.08)}

.hero{background:var(--ink);color:var(--white);padding:68px 28px 60px}
.hero-inner{max-width:780px;margin:0 auto}
.kicker{font-family:var(--mono);font-size:0.7rem;letter-spacing:.14em;text-transform:uppercase;color:#e09080;margin-bottom:18px}
.hero h1{font-family:var(--serif);font-size:clamp(1.9rem,4.5vw,3.1rem);font-weight:700;line-height:1.18;letter-spacing:-.015em;margin-bottom:22px}
.hero h1 em{font-style:italic;color:#e09080}
.hero-lead{font-size:1.05rem;color:#c0bdb6;line-height:1.7;max-width:620px;margin-bottom:30px}
.hero-legal{border-top:1px solid #2e2e2e;padding-top:18px;font-size:0.78rem;color:#666;line-height:1.55}
.hero-legal a{color:#a08080}

.hero-actions{display:flex;flex-direction:column;gap:10px;flex-shrink:0;min-width:220px}
.hero-btn{display:block;padding:12px 22px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:5px;color:#e0ddd6;font-family:var(--sans);font-weight:600;font-size:0.88rem;text-decoration:none;transition:background .15s,color .15s,border-color .15s;text-align:left}
.hero-btn:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.3)}

.urgent{background:var(--amber-bg);border-left:4px solid #c87000;padding:14px 0}
.urg-in{max-width:1140px;margin:0 auto;padding:0 28px;display:flex;gap:12px;align-items:flex-start}
.urgent p{font-size:0.85rem;color:var(--amber);line-height:1.55}
.urgent strong{font-weight:700}

.page{max-width:1140px;margin:0 auto;padding:0 28px 80px}
section{padding-top:60px;scroll-margin-top:68px}

.sec-label{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:0.67rem;letter-spacing:.16em;text-transform:uppercase;color:var(--mid);margin-bottom:10px}
.sec-label::after{content:'';flex:1;height:1px;background:var(--rule)}
h2{font-family:var(--serif);font-size:clamp(1.55rem,3vw,2.1rem);font-weight:700;letter-spacing:-.015em;line-height:1.22;margin-bottom:14px}
.lead{font-size:1rem;color:#3a3830;line-height:1.72;max-width:740px;margin-bottom:30px}
.lead a,.body-text a{color:var(--blue)}
.body-text{font-size:0.95rem;line-height:1.72;color:#3a3830;margin-bottom:18px}

.callout{border-radius:5px;padding:22px 26px;margin:28px 0}
.c-red{background:var(--accent-bg);border-left:4px solid var(--accent)}
.c-blue{background:var(--blue-bg);border-left:4px solid var(--blue)}
.c-green{background:var(--green-bg);border-left:4px solid var(--green)}
.c-amber{background:var(--amber-bg);border-left:4px solid #c87000}
.c-tag{font-family:var(--mono);font-size:0.66rem;letter-spacing:.13em;text-transform:uppercase;font-weight:500;margin-bottom:8px}
.c-red .c-tag{color:var(--accent)}.c-blue .c-tag{color:var(--blue)}.c-green .c-tag{color:var(--green)}.c-amber .c-tag{color:var(--amber)}
.callout h3{font-family:var(--serif);font-size:1.08rem;font-weight:700;margin-bottom:8px}
.callout p,.callout li{font-size:0.9rem;line-height:1.68;color:#1e1e1e}
.callout ul,.callout ol{padding-left:20px;margin-top:8px}
.callout li{margin-bottom:5px}
.callout a{color:inherit;text-decoration:underline;text-underline-offset:2px}
.c-blue a{color:var(--blue)}.c-green a{color:var(--green)}.c-amber a{color:var(--amber)}.c-red a{color:var(--accent)}

.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;margin-top:24px}
.card{background:var(--white);border:1px solid var(--rule);border-radius:5px;padding:22px}
.card-num{font-family:var(--mono);font-size:0.68rem;color:var(--mid);letter-spacing:.06em;margin-bottom:10px}
.card h3{font-family:var(--serif);font-size:1.05rem;font-weight:700;margin-bottom:8px;line-height:1.3}
.card p{font-size:0.87rem;color:#3a3830;line-height:1.65}
.card a{color:var(--blue)}

.table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--rule);border-radius:5px}
table{width:100%;border-collapse:collapse;font-size:0.86rem}
thead{background:var(--ink);color:var(--white)}
thead th{padding:11px 16px;text-align:left;font-family:var(--mono);font-size:0.68rem;font-weight:500;letter-spacing:.07em;text-transform:uppercase}
tbody tr{border-bottom:1px solid var(--rule-light)}
tbody tr:last-child{border-bottom:none}
tbody tr:nth-child(even){background:rgba(0,0,0,.02)}
tbody td{padding:11px 16px;color:#2a2820;vertical-align:top;line-height:1.5}
td.val{font-weight:700;color:var(--accent)}
td.ref{font-family:var(--mono);font-size:0.79rem}
td.ref a{color:var(--blue)}

.accordion{border:1px solid var(--rule);border-radius:5px;overflow:hidden;margin:22px 0}
.acc-item{border-bottom:1px solid var(--rule-light)}
.acc-item:last-child{border-bottom:none}
.acc-trig{width:100%;background:var(--white);border:none;padding:16px 20px;text-align:left;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;transition:background .15s}
.acc-trig:hover{background:#faf9f6}
.acc-left{display:flex;align-items:center;gap:13px}
.acc-id{font-family:var(--mono);font-size:0.68rem;color:var(--mid);flex-shrink:0}
.acc-title{font-weight:600;font-size:0.92rem;color:var(--ink)}
.acc-arrow{font-size:0.72rem;color:var(--mid);transition:transform .2s;flex-shrink:0}
.acc-trig.open .acc-arrow{transform:rotate(180deg)}
.acc-body{display:none;padding:18px 20px 20px;background:#faf9f6;border-top:1px solid var(--rule-light)}
.acc-body.open{display:block}
.acc-body p{font-size:0.88rem;line-height:1.72;color:#2e2c28}
.acc-body p+p{margin-top:10px}
.acc-body ul{padding-left:20px;margin-top:8px}
.acc-body li{font-size:0.88rem;line-height:1.65;color:#2e2c28;margin-bottom:5px}
.acc-body a{color:var(--blue)}

.steps{margin:24px 0}
.step{display:flex;gap:18px;position:relative}
.step::before{content:'';position:absolute;left:18px;top:38px;bottom:0;width:1px;background:var(--rule)}
.step:last-child::before{display:none}
.step-n{width:38px;height:38px;border-radius:50%;background:var(--ink);color:var(--white);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:0.72rem;font-weight:500;flex-shrink:0;position:relative;z-index:1}
.step-body{padding-bottom:28px;flex:1}
.step-body h4{font-weight:700;font-size:0.97rem;margin-bottom:5px;padding-top:7px}
.step-body p{font-size:0.87rem;color:#3a3830;line-height:1.65}

.sev-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin:24px 0}
.sev{background:var(--white);border:1px solid var(--rule);border-radius:5px;padding:18px 20px}
.sev-tag{font-family:var(--mono);font-size:0.68rem;letter-spacing:.1em;text-transform:uppercase;font-weight:500;padding:3px 8px;border-radius:3px;display:inline-block;margin-bottom:10px}
.sev.minor .sev-tag{background:var(--green-bg);color:var(--green)}
.sev.inter .sev-tag{background:var(--amber-bg);color:var(--amber)}
.sev.major .sev-tag{background:var(--accent-bg);color:var(--accent)}
.sev h4{font-weight:700;font-size:0.93rem;margin-bottom:6px}
.sev p{font-size:0.83rem;color:#3a3830;line-height:1.6}
.out{list-style:none;padding:0;margin-top:8px}
.out li{font-size:0.82rem;color:#3a3830;line-height:1.55;margin-bottom:4px;padding-left:14px;position:relative}
.out li::before{content:'→';position:absolute;left:0;color:var(--mid)}

.chklist{display:flex;flex-direction:column;gap:9px;margin:22px 0}
.ci{display:flex;align-items:flex-start;gap:13px;background:var(--white);border:1px solid var(--rule);border-radius:5px;padding:13px 15px}
.ci-box{width:20px;height:20px;border:2px solid var(--rule);border-radius:4px;flex-shrink:0;margin-top:1px;cursor:pointer;transition:all .15s;display:flex;align-items:center;justify-content:center;font-size:0.72rem;color:transparent}
.ci-box.ticked{background:var(--green);border-color:var(--green);color:white}
.ci-text{flex:1}
.ci-title{font-weight:600;font-size:0.88rem;margin-bottom:2px}
.ci-desc{font-size:0.81rem;color:var(--mid);line-height:1.5}
.ci-desc a{color:var(--blue)}
.ci-pri{font-family:var(--mono);font-size:0.63rem;letter-spacing:.08em;text-transform:uppercase;padding:3px 7px;border-radius:3px;flex-shrink:0;margin-top:1px}
.p-c{background:var(--accent-bg);color:var(--accent)}
.p-i{background:var(--amber-bg);color:var(--amber)}
.p-u{background:var(--blue-bg);color:var(--blue)}

.letter{background:var(--white);border:1px solid var(--rule);border-radius:5px;overflow:hidden;margin:22px 0}
.ltr-hd{background:var(--ink);color:var(--white);padding:12px 18px;display:flex;align-items:center;justify-content:space-between}
.ltr-lbl{font-family:var(--mono);font-size:0.69rem;color:#a8a8a8;text-transform:uppercase;letter-spacing:.09em}
.copy-btn{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:var(--white);padding:5px 11px;border-radius:3px;font-family:var(--mono);font-size:0.68rem;cursor:pointer;letter-spacing:.05em;transition:background .15s}
.copy-btn:hover{background:rgba(255,255,255,.2)}
.ltr-body{padding:28px 32px;font-family:Georgia,serif;font-size:0.89rem;line-height:1.82;color:#111}
.ltr-body p{margin-bottom:14px}
.ltr-body p:last-child{margin-bottom:0}
.ph{background:#fff9c4;padding:1px 4px;border-radius:3px;font-style:italic;font-size:0.83rem;color:#5a3c00}

.sources{background:var(--white);border:1px solid var(--rule);border-radius:5px;padding:22px 24px;margin:32px 0 0}
.sources h3{font-family:var(--serif);font-size:1rem;font-weight:700;margin-bottom:14px}
.src-list{list-style:none;padding:0}
.src-list li{font-size:0.82rem;color:var(--mid);line-height:1.55;margin-bottom:8px;padding-left:18px;position:relative}
.src-list li::before{content:'→';position:absolute;left:0;color:var(--rule)}
.src-list a{color:var(--blue);text-decoration:none}
.src-list a:hover{text-decoration:underline}

.toc{background:var(--white);border:1px solid var(--rule);border-radius:6px;padding:22px 28px 18px;margin-bottom:44px}
.toc-title{font-family:var(--mono);font-size:0.67rem;letter-spacing:.16em;text-transform:uppercase;color:var(--mid);margin-bottom:12px}
.toc>ol{list-style:none;counter-reset:toc-l1;padding:0}
.toc>ol>li{counter-increment:toc-l1;margin-bottom:6px}
.toc>ol>li>a::before{content:counter(toc-l1) ". ";font-family:var(--mono);font-size:0.82em;color:var(--mid)}
.toc>ol>li>a{font-family:var(--serif);font-size:0.95rem;font-weight:600;color:var(--ink);text-decoration:none}
.toc>ol>li>a:hover{color:var(--accent)}
.toc ol ol{list-style:none;counter-reset:toc-l2;padding-left:22px;margin-top:4px}
.toc ol ol li{counter-increment:toc-l2;margin-bottom:2px}
.toc ol ol li a::before{content:counter(toc-l1) "." counter(toc-l2) " ";font-family:var(--mono);font-size:0.78em;color:var(--mid)}
.toc ol ol li a{font-size:0.85rem;color:#3a3830;text-decoration:none}
.toc ol ol li a:hover{color:var(--accent)}

.hr{height:1px;background:var(--rule);margin:60px 0 0}

code{font-family:var(--mono);font-size:0.82em;background:rgba(0,0,0,.06);padding:1px 5px;border-radius:3px}

.formula{font-family:var(--mono);font-size:0.92rem;line-height:1.8;background:var(--white);border:1px solid var(--rule);border-left:3px solid var(--blue);border-radius:4px;padding:14px 20px;margin:16px 0 20px;color:var(--ink);overflow-x:auto}

footer{background:var(--ink);color:#666;padding:40px 28px;margin-top:80px}
.foot{max-width:1140px;margin:0 auto}
footer p{font-size:0.8rem;line-height:1.65;margin-bottom:8px}
footer p:last-child{margin-bottom:0}
footer a{color:#a0a0a0}
footer strong{color:#b0b0b0}

/* Contact page */
.form-group{margin-bottom:20px}
label{display:block;font-weight:600;font-size:0.88rem;margin-bottom:6px;color:var(--ink)}
input,textarea,select{width:100%;font-family:var(--sans);font-size:0.92rem;padding:10px 14px;border:1px solid var(--rule);border-radius:5px;background:var(--white);color:var(--ink);line-height:1.5;transition:border-color .15s}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--blue)}
textarea{resize:vertical;min-height:140px}
select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b6b6b' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.btn{display:inline-block;font-family:var(--sans);font-weight:600;font-size:0.92rem;padding:12px 28px;border:none;border-radius:5px;cursor:pointer;transition:background .15s,transform .1s}
.btn-primary{background:var(--ink);color:var(--white)}
.btn-primary:hover{background:#333}
.btn-primary:active{transform:scale(0.98)}
.btn:disabled{opacity:0.5;cursor:not-allowed}
.alert{padding:14px 18px;border-radius:5px;font-size:0.9rem;line-height:1.55;margin-bottom:20px;display:none}
.alert-success{background:var(--green-bg);border-left:4px solid var(--green);color:var(--green)}

/* Stats bar */
.stats-bar{background:#1a3a5c;color:#dde8f4;border-bottom:1px solid #2a4a6c}
.stats-grid{max-width:1140px;margin:0 auto;padding:0 28px;display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
.stat{padding:18px 20px;border-right:1px solid #2a4a6c}
.stat:last-child{border-right:none}
.stat-label{font-family:var(--mono);font-size:0.6rem;letter-spacing:.14em;text-transform:uppercase;color:#7aadce;margin-bottom:5px}
.stat-value{font-family:var(--serif);font-size:2.1rem;font-weight:700;line-height:1;margin-bottom:5px;color:#fff}
.stat-desc{font-size:0.76rem;color:#8ab8d4;line-height:1.45}
.stat-desc a{color:#7ab8d4;text-decoration:underline;text-underline-offset:2px}

@media(max-width:680px){
  .hdr{height:auto;padding:12px 20px;flex-direction:column;align-items:flex-start}
  nav{gap:2px;flex-wrap:wrap}
  .hero{padding:48px 20px 44px}
  .hero-inner{gap:28px !important}
  .hero-actions{min-width:0 !important;width:100%}
  .hero-btn{text-align:center}
  .page{padding:0 20px 60px}
  .stats-grid{grid-template-columns:1fr 1fr;padding:0 20px}
  .stat{border-right:none;border-bottom:1px solid #2a4a6c;padding:16px 12px}
  .stat:nth-child(odd){border-right:1px solid #2a4a6c}
  .stat:nth-last-child(-n+2){border-bottom:none}
  .stat-value{font-size:1.6rem}
}

@media(max-width:400px){
  .stats-grid{grid-template-columns:1fr}
  .stat{border-right:none !important}
  .stat:last-child{border-bottom:none}
}