/* ==========================================================
   Onward Billing & Coding — Medical Billing & Coding Fundamentals
   ========================================================== */
:root{
  --ink:#0F1B2D; --ink-2:#1B2C47; --text:#16243A; --muted:#4D5B6E; --line:#E2E7EE;
  --accent:#0B7A6E; --accent-dark:#075E55; --accent-soft:#E3F3EF;
  --blue:#0C4F86; --blue-soft:#E8F0FA; --amber:#E9A23B; --amber-soft:#FDF1DE; --peach:#FBEAE1;
  --sand:#F7F4EE; --bg:#FBFBF8; --card:#FFFFFF;
  --ok:#17694F; --ok-soft:#E3F4EC; --bad:#A12B2B; --bad-soft:#FBE8E8;
  --radius:22px; --side:272px; --top:72px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.06),0 4px 14px rgba(15,27,45,.06);
  --shadow:0 2px 6px rgba(15,27,45,.05),0 18px 40px -12px rgba(15,27,45,.18);
  --shadow-lg:0 30px 70px -20px rgba(15,27,45,.35);
  --font:Inter,"SF Pro Text",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-display:Inter,"SF Pro Display",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;
}
*{box-sizing:border-box}
html{scroll-behavior:auto;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:
  radial-gradient(900px 500px at 105% -10%,#DDEFF0 0%,transparent 60%),
  radial-gradient(700px 500px at -10% 30%,#F6EEDF 0%,transparent 60%),var(--bg)}
a{color:var(--accent)}
a:hover{color:var(--accent-dark)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.86em;background:var(--blue-soft);color:var(--blue);padding:.1em .4em;border-radius:6px;white-space:nowrap}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.15;color:var(--ink);margin:0 0 .5em;letter-spacing:-.025em}
h1{font-size:clamp(2.1rem,4.4vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:750}
h3{font-size:1.15rem;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
[hidden]{display:none!important}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 12px;z-index:100;border-radius:8px}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:6px}
.muted{color:var(--muted)}

/* ---------- Header: glass bar, minimal nav ---------- */
.topbar{position:sticky;top:0;z-index:30;height:var(--top);display:flex;align-items:center;gap:14px;padding:0 28px;
  background:rgba(251,251,248,.72);backdrop-filter:saturate(1.6) blur(16px);-webkit-backdrop-filter:saturate(1.6) blur(16px);border-bottom:1px solid rgba(226,231,238,.8)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);margin-right:auto;min-width:0}
.brand svg{flex:none;filter:drop-shadow(0 6px 10px rgba(12,79,134,.25))}
.brand .wm{display:flex;flex-direction:column;line-height:1.05;min-width:0}
.brand .wm b{font-weight:750;font-size:1rem;letter-spacing:-.015em;color:var(--ink);white-space:nowrap}
.brand .wm i{font-style:normal;font-size:.68rem;font-weight:700;letter-spacing:.22em;color:var(--accent);margin-top:3px}
.brand .wm-short{display:none;font-weight:750;letter-spacing:-.01em;white-space:nowrap}
.brand .wm-short span{color:var(--accent)}
.menu-btn{display:none;background:#fff;border:1px solid var(--line);color:var(--ink);padding:8px;cursor:pointer;border-radius:12px;box-shadow:var(--shadow-sm)}
.top-links{display:flex;align-items:center;gap:4px}
.top-links a.tl{text-decoration:none;color:var(--ink);font-weight:600;font-size:.92rem;padding:9px 14px;border-radius:999px;transition:background .2s}
.top-links a.tl:hover,.top-links a.tl.active{background:rgba(15,27,45,.06)}

/* ---------- Layout ---------- */
.layout{display:flex;min-height:calc(100vh - var(--top))}
.sidebar{width:var(--side);flex:none;position:sticky;top:var(--top);height:calc(100vh - var(--top));overflow-y:auto;padding:22px 16px;display:flex;flex-direction:column;justify-content:space-between;
  background:rgba(255,255,255,.6);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-right:1px solid var(--line)}
.sidebar nav a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:12px;text-decoration:none;color:var(--text);font-size:.94rem;transition:background .2s,transform .2s}
.sidebar nav a:hover{background:#fff;box-shadow:var(--shadow-sm)}
.sidebar nav a.active{background:var(--ink);color:#fff;font-weight:600;box-shadow:0 8px 20px -8px rgba(15,27,45,.55)}
.sidebar nav a.active .ico,.sidebar nav a.active .pct{color:#CFE7E3}
.sidebar .ico{width:24px;height:24px;flex:none;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:var(--accent-soft);color:var(--accent-dark);font-size:.78rem;font-weight:700}
.sidebar nav a.active .ico{background:rgba(255,255,255,.14)}
.sidebar .pct{margin-left:auto;font-size:.76rem;color:var(--muted)}
.sidebar .done-mark{margin-left:auto;color:var(--ok);font-weight:800}
.sidebar a.done-mod .ico{background:var(--ok-soft);color:var(--ok)}
.nav-label{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin:18px 12px 6px}
.nav-label:first-child{margin-top:0}
.side-progress{margin-top:18px;padding:16px;font-size:.88rem;color:var(--muted);background:linear-gradient(140deg,#fff,var(--accent-soft));border:1px solid var(--line);border-radius:18px}
.side-progress strong{color:var(--ink)}
.scrim{position:fixed;inset:var(--top) 0 0 0;background:rgba(15,27,45,.35);backdrop-filter:blur(2px);z-index:19}
main{flex:1;min-width:0;outline:none}
.view{max-width:980px;margin:0 auto;padding:44px 36px 64px}
body.page-home .sidebar{display:none}
body.page-home .view{max-width:1200px;padding-top:28px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 22px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);font:inherit;font-size:.95rem;font-weight:650;text-decoration:none;cursor:pointer;line-height:1.2;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,background .2s,border-color .2s}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow);border-color:#C9D2DE;color:var(--ink)}
.btn-primary{background:linear-gradient(135deg,var(--ink-2),var(--ink));border-color:var(--ink);color:#fff}
.btn-primary:hover{color:#fff;background:linear-gradient(135deg,#24395C,var(--ink))}
.btn-accent{background:linear-gradient(135deg,#0B7A6E,var(--accent-dark));border-color:var(--accent-dark);color:#fff}
.btn-accent:hover{color:#fff;background:linear-gradient(135deg,#0B7A6E,#064E47)}
.btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.35);color:#fff;box-shadow:none}
.btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;border-color:rgba(255,255,255,.6)}
.btn-sm{min-height:38px;padding:8px 16px;font-size:.86rem}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.linkish{background:none;border:0;padding:6px 0;font:inherit;font-size:.9rem;color:inherit;text-decoration:underline;text-underline-offset:3px;cursor:pointer;font-weight:600}
.resume-note{font-size:.86rem;margin-top:10px;opacity:.85}

/* ---------- Eyebrow / chips ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.74rem;font-weight:750;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-dark);background:var(--accent-soft);padding:6px 12px;border-radius:999px;margin-bottom:14px}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}
.lead{font-size:1.14rem;color:var(--muted);max-width:640px}

/* ---------- Home hero (dark layered block) ---------- */
.home-hero{position:relative;overflow:hidden;border-radius:36px;padding:64px 56px 120px;color:#E9EEF5;
  background:radial-gradient(600px 380px at 85% 20%,rgba(22,163,143,.45),transparent 65%),radial-gradient(500px 360px at 10% 110%,rgba(233,162,59,.28),transparent 60%),linear-gradient(140deg,#14233B 0%,#0F1B2D 55%,#0B2B3E 100%);
  box-shadow:var(--shadow-lg);display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.home-hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:22px 22px;mask-image:linear-gradient(to bottom,#000,transparent 85%);-webkit-mask-image:linear-gradient(to bottom,#000,transparent 85%);pointer-events:none}
.home-hero > *{position:relative;z-index:1}
.home-hero h1{color:#fff;font-size:clamp(2.3rem,4.8vw,3.9rem);margin-bottom:18px}
.home-hero h1 em{font-style:normal;background:linear-gradient(90deg,#7FE0CF,#F6C25B);-webkit-background-clip:text;background-clip:text;color:transparent}
.home-hero .lead{color:#C4CFDD;font-size:1.16rem}
.home-hero .eyebrow{background:rgba(255,255,255,.1);color:#BFEDE4;border:1px solid rgba(255,255,255,.14)}
.home-hero .eyebrow::before{background:#7FE0CF}
.home-hero .btn-primary{background:#fff;color:var(--ink);border-color:#fff}
.home-hero .btn-primary:hover{background:#F1F5F9;color:var(--ink)}
.hero-points{list-style:none;margin:22px 0 28px;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.hero-points li{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;color:#DCE4EE;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);padding:7px 13px;border-radius:999px}
.hero-points li::before{content:"✓";color:#7FE0CF;font-weight:800}
.hero-art{position:relative;min-height:380px}
.hero-art svg.art{width:100%;height:auto;display:block;filter:drop-shadow(0 30px 40px rgba(0,0,0,.35))}
.glass{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);backdrop-filter:blur(14px) saturate(1.4);-webkit-backdrop-filter:blur(14px) saturate(1.4);box-shadow:0 18px 40px -14px rgba(0,0,0,.45)}
.chip{position:absolute;display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:16px;color:#fff;font-size:.84rem;font-weight:600;white-space:nowrap}
.chip small{display:block;font-weight:500;color:#C9D6E3;font-size:.72rem}
.chip .dot{width:30px;height:30px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:.9rem;flex:none}
.chip code{background:rgba(255,255,255,.9);color:var(--blue)}
.chip-1{top:6%;left:-6%}.chip-2{top:44%;right:-4%}.chip-3{bottom:2%;left:6%}
.float{animation:floaty 7s ease-in-out infinite}.float.d2{animation-delay:-2.3s}.float.d3{animation-delay:-4.6s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* stats overlapping the hero */
.stats{position:relative;z-index:2;margin:-78px 40px 0;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:14px;border-radius:28px;background:rgba(255,255,255,.75);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow)}
.stat{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px 20px}
.stat .n{font-family:var(--font-display);font-size:2rem;font-weight:800;letter-spacing:-.03em;color:var(--ink);line-height:1}
.stat .l{font-size:.86rem;color:var(--muted);margin-top:6px}
.stat:nth-child(1) .n{color:var(--accent)}.stat:nth-child(2) .n{color:var(--blue)}.stat:nth-child(3) .n{color:#A35F0B}

/* ---------- Sections ---------- */
.section{margin-top:88px}
.section-head{max-width:680px;margin-bottom:28px}
.section-head p{color:var(--muted);font-size:1.05rem;margin:0}
.section > h2{margin-bottom:16px}
.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;margin-bottom:18px;box-shadow:var(--shadow-sm)}
.card > h3:first-child{margin-top:0}

/* bento */
.bento{display:grid;grid-template-columns:repeat(6,1fr);grid-auto-rows:minmax(150px,auto);gap:16px}
.tile{position:relative;overflow:hidden;border-radius:26px;padding:26px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);transition:transform .3s,box-shadow .3s}
.tile:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.tile h3{margin:14px 0 6px}.tile p{margin:0;color:var(--muted);font-size:.95rem}
.tile .ti{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;background:#fff;box-shadow:var(--shadow-sm)}
.t-a{grid-column:span 3;grid-row:span 2;background:linear-gradient(160deg,var(--accent-soft),#fff 70%)}
.t-b{grid-column:span 3;background:linear-gradient(160deg,var(--blue-soft),#fff 80%)}
.t-c{grid-column:span 3;background:linear-gradient(160deg,var(--amber-soft),#fff 80%)}
.t-d,.t-e,.t-f{grid-column:span 2}
.t-e{background:linear-gradient(160deg,var(--peach),#fff 80%)}
.t-a .mini{margin-top:20px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 16px;box-shadow:var(--shadow)}
.t-a .mini .row{display:flex;justify-content:space-between;gap:10px;font-size:.88rem;padding:7px 0;border-top:1px dashed var(--line)}
.t-a .mini .row:first-child{border-top:0}
.tile .blob{position:absolute;right:-40px;bottom:-40px;width:150px;height:150px;border-radius:50%;background:radial-gradient(circle at 30% 30%,rgba(22,163,143,.25),transparent 70%)}

/* module grid on home */
.mod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.mod-card{position:relative;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--text);background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s;overflow:hidden}
.mod-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#C6D6E2;color:var(--text)}
.mod-card .top{display:flex;align-items:center;justify-content:space-between}
.mod-card .badge{width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;background:linear-gradient(140deg,#16A38F,#0C4F86);box-shadow:0 10px 18px -8px rgba(12,79,134,.6)}
.mod-card:nth-child(3n+2) .badge{background:linear-gradient(140deg,#2C6FB5,#1B2C47)}
.mod-card:nth-child(3n+3) .badge{background:linear-gradient(140deg,#E9A23B,#B5651D)}
.mod-card .meta{font-size:.8rem;color:var(--muted)}
.mod-card h3{margin:6px 0 0;font-size:1.06rem}
.mod-card p{margin:0;color:var(--muted);font-size:.9rem}
.mod-card .bar{margin-top:auto}

/* split / alternating */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split.rev > :first-child{order:2}
.panel{position:relative;border-radius:30px;padding:30px;min-height:300px;background:linear-gradient(150deg,#E5F1F6,#F7F4EE);border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden}
.panel.warm{background:linear-gradient(150deg,#FBEAE1,#F7F4EE 60%,#E3F3EF)}
.panel .stack{position:relative;display:grid;gap:12px}
.panel .pc{background:rgba(255,255,255,.8);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.95);border-radius:18px;padding:14px 16px;box-shadow:var(--shadow-sm);display:flex;gap:12px;align-items:flex-start}
.panel .pc:nth-child(2){margin-left:28px}.panel .pc:nth-child(3){margin-left:56px}.panel .pc:nth-child(4){margin-left:28px}
.panel .pc b{display:block;color:var(--ink)}.panel .pc span{font-size:.88rem;color:var(--muted)}
.panel .pc .ti{flex:none;width:36px;height:36px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--accent-soft)}
.panel .ring{position:absolute;border-radius:50%;border:1px solid rgba(12,79,134,.14)}
.checks{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.checks li{padding-left:34px;position:relative}
.checks li::before{content:"✓";position:absolute;left:0;top:1px;width:22px;height:22px;border-radius:7px;background:var(--accent-soft);color:var(--accent-dark);font-weight:800;font-size:.8rem;display:flex;align-items:center;justify-content:center}
.roles{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.roles .card{margin:0}.roles h3{margin-bottom:4px}.roles p{margin:0;color:var(--muted);font-size:.93rem}

/* course map */
.map{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px}
.map a{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:16px;background:#fff;border:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:600;font-size:.92rem;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}
.map a:hover{transform:translateY(-2px);box-shadow:var(--shadow);color:var(--ink)}
.map a span{width:28px;height:28px;flex:none;border-radius:9px;display:flex;align-items:center;justify-content:center;background:var(--blue-soft);color:var(--blue);font-size:.8rem;font-weight:800}

/* facts */
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.fact{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow-sm)}
.fact .k{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}
.fact .v{font-weight:650;margin-top:4px;color:var(--ink)}
.fact.price .v{font-size:1.5rem;color:var(--accent-dark)}

/* enroll: dark glass card */
.enroll-card{display:grid;grid-template-columns:1.3fr .7fr;gap:28px;align-items:center;overflow:hidden;color:#DCE4EE;border:0!important;padding:40px!important;
  background:radial-gradient(420px 260px at 100% 0%,rgba(22,163,143,.45),transparent 70%),radial-gradient(380px 240px at 0% 100%,rgba(233,162,59,.25),transparent 70%),linear-gradient(140deg,#1B2C47,#0F1B2D)!important;box-shadow:var(--shadow-lg)!important}
.enroll-card h2{color:#fff}
.enroll-card .eyebrow{background:rgba(255,255,255,.1);color:#BFEDE4}
.enroll-card .eyebrow::before{background:#7FE0CF}
.enroll-card small{display:block;color:#B8C5D4;margin-top:8px}
.enroll-card .price-box{border-radius:22px;padding:24px}
.enroll-card .price{font-family:var(--font-display);font-size:2.6rem;font-weight:800;color:#fff;line-height:1;letter-spacing:-.03em}
.enroll-card .btn-accent{background:linear-gradient(135deg,#7FE0CF,#3FBFAA);color:#062A26;border-color:#7FE0CF;width:100%}

/* contact & cta */
.cta{text-align:center;border-radius:32px!important;padding:48px 28px!important;background:linear-gradient(140deg,#E3F3EF,#E8F0FA 60%,#FDF1DE)!important;border:1px solid var(--line)}

/* ---------- Syllabus list ---------- */
.syl{list-style:none;margin:0;padding:0}
.syl li{display:flex;gap:18px;padding:22px 0;border-top:1px solid var(--line)}
.syl li:first-child{border-top:0;padding-top:4px}
.syl .num{flex:none;width:44px;height:44px;border-radius:14px;background:linear-gradient(140deg,#16A38F,#0C4F86);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;box-shadow:0 10px 18px -8px rgba(12,79,134,.6)}
.syl h3{margin:6px 0 4px}
.syl p{margin:0 0 6px;color:var(--muted)}
.syl .topics{font-size:.88rem;color:var(--muted)}
.syl a.go{font-weight:700;font-size:.92rem;text-decoration:none}
.page-head{position:relative;overflow:hidden;border-radius:30px;padding:40px;margin-bottom:24px;background:linear-gradient(140deg,#E3F3EF,#E8F0FA 55%,#FDF1DE);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.page-head::after{content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;background:radial-gradient(circle,rgba(12,79,134,.16),transparent 70%)}
.page-head .lead{margin:0}

/* ---------- Progress ---------- */
.bar{height:10px;background:#E8EDF3;border-radius:99px;overflow:hidden}
.bar > span{display:block;height:100%;background:linear-gradient(90deg,#16A38F,#2C6FB5);border-radius:99px;transition:width .5s}
.prog-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.prog-item{display:grid;grid-template-columns:1fr auto;gap:6px 16px;align-items:center;text-decoration:none;color:var(--text);background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px 18px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}
.prog-item:hover{transform:translateY(-2px);box-shadow:var(--shadow);color:var(--text)}
.prog-item .bar{grid-column:1 / -1}
.prog-item small{color:var(--muted)}
.cert{border-radius:20px;padding:18px 22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm)}
.cert.ok{background:var(--ok-soft);border-color:#B9DCCB}
.cert strong{display:block;margin-bottom:2px;color:var(--ink)}
.diagram{background:linear-gradient(160deg,#fff,#F3F7FA);border:1px solid var(--line);border-radius:28px;padding:24px;text-align:center;box-shadow:var(--shadow)}
.diagram svg{width:100%;max-width:560px;height:auto}

/* ---------- Module view ---------- */
.mod-head{position:relative;overflow:hidden;border-radius:30px;padding:40px 40px 34px;margin-bottom:8px;color:#DCE4EE;
  background:radial-gradient(420px 260px at 100% 0%,rgba(22,163,143,.5),transparent 70%),radial-gradient(360px 220px at 0% 120%,rgba(233,162,59,.3),transparent 70%),linear-gradient(140deg,#1B2C47,#0F1B2D);box-shadow:var(--shadow-lg)}
.mod-head::after{content:attr(data-num);position:absolute;right:28px;bottom:-40px;font-family:var(--font-display);font-size:13rem;font-weight:800;line-height:1;color:rgba(255,255,255,.06);pointer-events:none}
.mod-head h1{color:#fff;font-size:clamp(1.9rem,3.6vw,2.8rem)}
.mod-head .lead{color:#C4CFDD}
.mod-head .eyebrow{background:rgba(255,255,255,.1);color:#BFEDE4}
.mod-head .eyebrow::before{background:#7FE0CF}
.mod-head .bar{margin:18px 0 8px;max-width:420px;background:rgba(255,255,255,.14)}
.mod-head small.muted{color:#B8C5D4}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 18px;padding:12px;border-radius:22px;background:rgba(255,255,255,.7);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.toc a{font-size:.84rem;padding:7px 13px;border:1px solid var(--line);border-radius:99px;background:#fff;text-decoration:none;color:var(--ink);transition:border-color .2s,background .2s}
.toc a:hover{border-color:var(--accent)}
.toc a.done{border-color:#B9DCCB;background:var(--ok-soft)}
.lesson{scroll-margin-top:calc(var(--top) + 16px)}
.lesson-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px}
.lesson-head h3{margin:0;font-size:1.28rem}
.lesson p{max-width:760px}
.obj{background:linear-gradient(150deg,#E3F3EF,#fff 70%)}
.obj ul{margin:0;padding-left:1.2em}.obj li{margin:.3em 0}
.tbl{overflow-x:auto;margin:6px 0 16px;border:1px solid var(--line);border-radius:16px;background:#fff}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th,td{text-align:left;padding:11px 13px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:#F3F6F9;font-weight:700;color:var(--muted);font-size:.76rem;text-transform:uppercase;letter-spacing:.06em}
tr:last-child td{border-bottom:0}
tbody tr:nth-child(even) td{background:#FBFCFD}
ul.clean{margin:0;padding-left:1.2em}ul.clean li{margin:.35em 0}
ol.steps{list-style:none;counter-reset:s;margin:0;padding:0}
ol.steps li{counter-increment:s;position:relative;padding:0 0 16px 48px}
ol.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:11px;background:linear-gradient(140deg,#16A38F,#0C4F86);color:#fff;font-size:.85rem;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 14px -8px rgba(12,79,134,.7)}
ol.steps li:not(:last-child)::after{content:"";position:absolute;left:15px;top:36px;bottom:4px;width:2px;background:var(--line)}
ol.steps strong{display:block;color:var(--ink)}
ol.steps span{color:var(--muted);font-size:.95rem}
.mistakes{position:relative;border-radius:22px;padding:22px 24px 18px 24px;margin-bottom:18px;background:linear-gradient(150deg,#FDF1DE,#FBEAE1);border:1px solid #F1DCC0;box-shadow:var(--shadow-sm)}
.mistakes strong.t{display:flex;align-items:center;gap:8px;color:#8A4B06;font-size:.76rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:8px}
.mistakes strong.t::before{content:"!";width:22px;height:22px;border-radius:7px;background:#E9A23B;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem}
.mistakes ul{margin:0;padding-left:1.2em}.mistakes li{margin:.35em 0}
.ex-card .scn{background:var(--blue-soft);border:1px solid #D5E3F3;border-radius:16px;padding:12px 16px;margin:6px 0 12px}
.ex-card ol{margin:0 0 12px;padding-left:1.3em}.ex-card ol li{margin:.25em 0}
.ex-card .ans{background:var(--ok-soft);border-radius:14px;padding:11px 16px;margin:0}
.ex-item+.ex-item{margin-top:20px;padding-top:20px;border-top:1px dashed var(--line)}
.ex-item h4{margin:0 0 8px;font-size:1.02rem;color:var(--blue)}
.summary-card{background:linear-gradient(150deg,#E8F0FA,#fff 70%)}
.summary-card ul{margin:0;padding-left:1.2em}.summary-card li{margin:.35em 0}
.mark{white-space:nowrap}
.mark[aria-pressed="true"]{background:var(--ok-soft);border-color:#B9DCCB;color:var(--ok)}
.notes{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line)}
.notes label{display:block;font-weight:650;font-size:.88rem;margin-bottom:6px;color:var(--ink)}
.notes textarea{width:100%;min-height:92px;resize:vertical;padding:12px 14px;border:1px solid var(--line);border-radius:14px;font:inherit;font-size:.95rem;background:#FBFCFD;color:var(--text)}
.notes textarea:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 4px var(--accent-soft)}
.notes .saved{font-size:.8rem;color:var(--muted);margin-top:4px;min-height:1.2em}
.flash{width:100%;min-height:180px;border:1px solid #D5E3F3;border-radius:22px;padding:28px;display:flex;flex-direction:column;justify-content:center;gap:8px;text-align:left;font:inherit;color:var(--ink);cursor:pointer;margin-bottom:14px;background:linear-gradient(150deg,#E8F0FA,#E3F3EF);box-shadow:var(--shadow);transition:transform .25s}
.flash:hover{transform:translateY(-2px)}
.flash .side{font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}
.flash .term{font-size:1.6rem;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.flash .def{font-size:1.08rem}
details.gloss{margin-top:16px}
details.gloss summary{cursor:pointer;font-weight:700;color:var(--accent-dark)}
.q-text{font-size:1.1rem;font-weight:700;color:var(--ink);margin-bottom:14px}
.opts{display:grid;gap:10px;margin-bottom:14px}
.opt{text-align:left;min-height:50px;padding:12px 16px;border:1px solid var(--line);border-radius:14px;background:#fff;font:inherit;color:var(--text);cursor:pointer;box-shadow:var(--shadow-sm);transition:border-color .2s,transform .2s}
.opt:hover:not([disabled]){border-color:var(--accent);transform:translateX(2px)}
.opt[disabled]{cursor:default}
.opt.correct{background:var(--ok-soft);border-color:var(--ok);color:var(--ok);font-weight:650}
.opt.wrong{background:var(--bad-soft);border-color:var(--bad);color:var(--bad)}
.feedback{padding:13px 16px;border-radius:14px;margin-bottom:14px}
.feedback.ok{background:var(--ok-soft)}.feedback.no{background:var(--bad-soft)}
.feedback b{display:block;color:var(--ink)}
.score{display:flex;gap:24px;flex-wrap:wrap;font-size:.9rem;color:var(--muted);margin:6px 0 14px}
.score b{color:var(--ink)}
.sq{margin:0 0 14px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:#FBFCFD}
.sq ol{margin:6px 0 8px;padding-left:1.4em}
.sq details summary{cursor:pointer;font-weight:650;color:var(--accent-dark)}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:36px;flex-wrap:wrap}
.faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 20px;margin-bottom:10px;box-shadow:var(--shadow-sm)}
.faq summary{cursor:pointer;font-weight:650;color:var(--ink)}
.faq details[open]{box-shadow:var(--shadow)}
.faq details p{margin:10px 0 0;color:var(--muted)}
.sources-list{margin:0;padding:0;list-style:none}.sources-list li{padding:12px 0;border-top:1px solid var(--line)}.sources-list li:first-child{border-top:0}
.sources-list strong{color:var(--ink)}.sources-list small{display:block;color:var(--muted);overflow-wrap:anywhere}

/* ---------- Footer ---------- */
.footer{position:relative;margin-top:40px;color:#B8C5D4;background:radial-gradient(500px 260px at 90% 0%,rgba(22,163,143,.25),transparent 70%),linear-gradient(160deg,#14233B,#0F1B2D)}
.footer a{color:#BFEDE4}
.footer-inner{max-width:1100px;margin:0 auto;padding:48px 36px 48px;font-size:.86rem}
.footer-brand{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:20px;color:#fff}
.footer-brand .brand{color:#fff}.footer-brand .brand .wm b{color:#fff}.footer-brand .brand .wm i{color:#7FE0CF}
.footer-h{font-size:.76rem;text-transform:uppercase;letter-spacing:.12em;color:#fff;margin:0 0 8px}
.footer-small{font-size:.8rem;margin:0;color:#9FB0C3}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 18px;margin:0 0 22px}.foot-links a{font-weight:650;text-decoration:none}
.bottom-nav{display:none}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* ---------- Responsive ---------- */
@media (max-width:1100px){.chip-1{left:0}.chip-2{right:0}}
@media (max-width:980px){
  :root{font-size:16px}
  .menu-btn{display:inline-flex}
  .resume-top{display:none}
  .sidebar{position:fixed;left:0;top:var(--top);z-index:20;transform:translateX(-100%);visibility:hidden;background:rgba(255,255,255,.96);transition:transform .25s}
  body.nav-open .sidebar{transform:none;visibility:visible;box-shadow:0 20px 50px rgba(15,27,45,.25);display:flex}
  body.page-home .sidebar{display:flex}
  .view{padding:28px 18px 40px}
  .home-hero{grid-template-columns:1fr;padding:44px 28px 110px}
  .hero-art{min-height:0;max-width:460px;margin:0 auto;width:100%}
  .stats{grid-template-columns:repeat(2,1fr);margin:-80px 12px 0}
  .split,.split.rev{grid-template-columns:1fr;gap:28px}.split.rev > :first-child{order:0}
  .bento{grid-template-columns:1fr 1fr}.t-a,.t-b,.t-c{grid-column:span 2;grid-row:auto}.t-d,.t-e,.t-f{grid-column:span 1}
  .enroll-card{grid-template-columns:1fr}
  .footer-inner{padding:32px 18px 110px}
  .bottom-nav{display:flex;position:fixed;bottom:10px;left:10px;right:10px;z-index:25;border-radius:22px;background:rgba(255,255,255,.82);backdrop-filter:blur(16px) saturate(1.5);-webkit-backdrop-filter:blur(16px) saturate(1.5);border:1px solid rgba(226,231,238,.9);box-shadow:0 14px 34px -10px rgba(15,27,45,.35);padding:4px 4px calc(4px + env(safe-area-inset-bottom))}
  .bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:7px 0 7px;font-size:.7rem;font-weight:600;text-decoration:none;color:var(--muted);border-radius:16px;min-width:0}
  .bottom-nav a span{font-size:1.05rem;line-height:1}
  .bottom-nav a.active{color:#fff;background:var(--ink)}
  .lesson-head{flex-direction:column}
  .toc{flex-wrap:nowrap;overflow-x:auto;margin-right:-18px;border-radius:18px 0 0 18px}
  .toc a{flex:none}
  .tbl table{min-width:520px}
  .sidebar{padding-bottom:110px}
}
@media (max-width:600px){
  :root{font-size:17px;--top:64px}
  html,body{width:100%;max-width:100%;overflow-x:hidden}
  .topbar{padding:0 12px;gap:8px}
  .brand .wm{display:none}.brand .wm-short{display:inline}
  .brand svg{width:34px;height:34px}
  .top-links a.tl{padding:7px 10px;font-size:.84rem}.top-links a.hide-sm{display:none}
  .view{padding:16px 12px 110px}
  body.page-home .view{padding-top:12px}
  .home-hero{border-radius:28px;padding:32px 20px 100px}
  .home-hero h1{font-size:2.15rem}
  .chip{font-size:.76rem;padding:8px 10px}.chip .dot{width:26px;height:26px}
  .chip-1{left:-2%;top:0}.chip-2{right:-2%}.chip-3{left:2%}
  .stats{margin:-76px 6px 0;padding:10px;gap:10px}
  .stat{padding:14px}.stat .n{font-size:1.6rem}
  .section{margin-top:60px}
  .bento{grid-template-columns:1fr}.t-a,.t-b,.t-c,.t-d,.t-e,.t-f{grid-column:auto}
  .roles{grid-template-columns:1fr}
  .card{padding:20px 18px}
  .mod-head,.page-head{padding:28px 20px;border-radius:24px}
  .mod-head::after{font-size:8rem;bottom:-24px}
  .enroll-card{padding:28px 20px!important}
  .panel{padding:20px}.panel .pc:nth-child(n){margin-left:0}
  .btn,.opt{white-space:normal}
  .tbl table{min-width:0;width:100%;font-size:.86rem;table-layout:fixed}
  .tbl th,.tbl td{padding:9px 7px;overflow-wrap:anywhere}
  code{white-space:normal;overflow-wrap:anywhere}
  .footer-inner{padding:28px 16px 120px}
}
@media print{
  .topbar,.sidebar,.bottom-nav,.notes,.mark,.scrim{display:none!important}
  body::before{display:none}
  .float{animation:none}
  .card,.tile,.mod-card{break-inside:avoid}
}
.chip.glass{background:rgba(15,27,45,.66);border-color:rgba(255,255,255,.22)}

/* ==========================================================
   Onward additions: brand, public landing, gate, welcome
   ========================================================== */
.brand img{flex:none;width:40px;height:40px;filter:drop-shadow(0 6px 10px rgba(12,79,134,.25))}
.top-link{font-weight:650;font-size:.92rem;text-decoration:none;color:var(--ink);padding:9px 14px;border-radius:999px;white-space:nowrap}
.top-link:hover{background:rgba(15,27,45,.06);color:var(--ink)}
.enter-top{display:none}
body.locked .enter-top{display:inline-flex}
body.locked .sidebar,body.locked .scrim,body.locked .menu-btn,body.locked .resume-top,body.locked .bottom-nav,body.locked .unlocked-only,body.locked .contact-top{display:none!important}
body.public .sidebar{display:none}
.small{font-size:.9rem}
.btn-lg{min-height:52px;padding:14px 28px;font-size:1.02rem}

/* hero extras */
.home-hero .price-line{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin:0 0 22px;color:#C4CFDD}
.home-hero .price-line .price{font-family:var(--font-display);font-size:2.2rem;font-weight:800;color:#fff;letter-spacing:-.03em;line-height:1}
.home-hero .enter-line,.home-hero .resume-note{color:#C4CFDD}
.home-hero .enter-line a{color:#BFEDE4}
.pay-note{margin:10px 0 0;font-size:.88rem;color:var(--amber);font-weight:650}
.enter-line{margin:16px 0 0;font-size:.95rem;color:var(--muted)}
.enter-line a{font-weight:700}
.stats .stat .l{line-height:1.35}

/* section heads */
.section-head .eyebrow{margin-bottom:12px}
.mod-card .meta{text-align:right}

/* enroll card */
.enroll-card ul.clean{color:#DCE4EE}
.enroll-card ul.ticks{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:8px}
.enroll-card ul.ticks li{display:flex;gap:10px;align-items:flex-start}
.enroll-card ul.ticks li::before{content:"✓";color:#7FE0CF;font-weight:800}
.enroll-card .price-box{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16)}
.enroll-card .price-box .muted{color:#B8C5D4}
.enroll-card .enter-line{color:#B8C5D4}
.enroll-card .enter-line a{color:#BFEDE4}
.enroll-card .btn-accent:hover{color:#062A26;background:linear-gradient(135deg,#9BE9DB,#4FCCB7)}

/* callout (study note) */
.callout{border-radius:22px;padding:20px 24px;margin-bottom:18px;background:linear-gradient(150deg,#FDF1DE,#FBEAE1);border:1px solid #F1DCC0;box-shadow:var(--shadow-sm)}
.callout strong{display:flex;align-items:center;gap:8px;color:#8A4B06;font-size:.76rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:8px}
.callout strong::before{content:"✎";width:22px;height:22px;border-radius:7px;background:#E9A23B;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem}

/* sources */
.sources a{display:block;padding:12px 0;border-top:1px solid var(--line);text-decoration:none;font-weight:650}
.sources a:first-child{border-top:0}
.sources small{display:block;color:var(--muted);font-weight:400}

/* gate + welcome */
.gate,.welcome{max-width:560px}
.gate-card{margin-top:12px;padding:36px}
.gate-card h1{font-size:clamp(1.8rem,3vw,2.3rem)}
.gate-card label{display:block;font-weight:650;font-size:.92rem;margin:18px 0 6px;color:var(--ink)}
.gate-card input{width:100%;min-height:50px;padding:12px 16px;border:1px solid var(--line);border-radius:14px;font:inherit;font-size:1rem;background:#FBFCFD;color:var(--text)}
.gate-card input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 4px var(--accent-soft)}
.gate-err{margin:8px 0 0;color:var(--bad);font-size:.9rem;font-weight:600}
.welcome-hero{display:block;padding:44px 40px 40px;margin-top:12px}
.welcome-hero h1{font-size:clamp(1.9rem,3.6vw,2.6rem)}
.welcome-hero label{display:block;font-weight:700;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:#BFEDE4;margin:22px 0 8px}
.welcome-hero .small{color:#B8C5D4}
.pw-box{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px 14px 20px;border-radius:18px;background:rgba(255,255,255,.1);border:1px dashed rgba(127,224,207,.6)}
.pw-box code{font-size:1.35rem;font-weight:700;background:none;color:#fff;padding:0;white-space:normal;word-break:break-all;letter-spacing:.02em}
.pw-box .btn{background:#fff;color:var(--ink);border-color:#fff}
.welcome-hero .btn-primary{width:100%;margin-top:18px}
body.public .footer-inner{padding-bottom:48px}

@media (max-width:980px){
  .contact-top{display:none}
  body.locked .footer-inner,body.public .footer-inner{padding-bottom:40px}
  body.locked .view,body.public .view{padding-bottom:40px}
}
@media (max-width:600px){
  .brand img{width:34px;height:34px}
  .brand .wm-short{font-size:.98rem}
  .top-link{padding:7px 8px;font-size:.86rem}
  .home-hero .btn-row .btn{flex:1 1 auto}
  .home-hero .price-line .price{font-size:1.9rem}
  .hero-art{margin-top:8px}
  .enroll-card .price{font-size:2.2rem}
  .gate-card{padding:26px 20px}
  .welcome-hero{padding:30px 20px 28px;border-radius:28px}
  .btn-lg{width:100%}
}
.view.landing{max-width:1200px;padding-top:28px}
@media (max-width:600px){
  /* readable tables on phones: no mid-word breaks; swipe sideways if a table is wide */
  .tbl{-webkit-overflow-scrolling:touch}
  .tbl table{min-width:0;width:100%;table-layout:auto;font-size:.84rem}
  .tbl th,.tbl td{padding:9px 8px;overflow-wrap:normal;word-break:normal;hyphens:manual}
  .tbl th{letter-spacing:.03em;font-size:.7rem}
  .tbl code{white-space:nowrap}
}
.mod-grid{grid-template-columns:repeat(auto-fill,minmax(205px,1fr))}
.mod-card .top{gap:10px}
.mod-card .meta{font-size:.76rem;line-height:1.3}