:root {
  --ink: #1a1410; --ink-2: #3a3129; --paper: #f4ecde; --paper-2: #efe4d0;
  --line: #d8cbb3; --ember: #c45c26; --ember-d: #9a3f14;
  --good: #2f6b45; --bad: #9b2c2c; --white: #fffaf3; --sky: #2c4a6e;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Figtree, system-ui, sans-serif; font-size: 17.5px; line-height: 1.65; }
a { color: var(--ember-d); }
p { max-width: 68ch; }
header.top { position: sticky; top: 0; z-index: 20; background: rgba(244,236,222,.96); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 58px; gap: 16px; }
.brand { font-family: Fraunces, serif; font-weight: 650; text-decoration: none; color: var(--ink); }
.menu { position: relative; }
.menu summary { list-style: none; cursor: pointer; font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); padding: 8px 10px; border: 1px solid var(--line); background: var(--white); }
.menu summary::-webkit-details-marker { display: none; }
.menu nav { position: absolute; right: 0; top: calc(100% + 6px); background: var(--white); border: 1px solid var(--line); min-width: 220px; padding: 8px 0; max-height: 70vh; overflow: auto; box-shadow: 0 12px 32px rgba(26,20,16,.12); }
.menu nav a { display: block; padding: 8px 14px; text-decoration: none; color: var(--ink); font-size: 14px; font-weight: 600; }
.menu nav a:hover { background: var(--paper-2); }
.hero { padding: 48px 0 20px; }
.kicker { font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--ember); }
h1,h2,h3,h4 { font-family: Fraunces, serif; letter-spacing: -.03em; line-height: 1.18; }
h1 { font-size: clamp(34px, 6vw, 56px); margin: 10px 0 16px; font-weight: 650; }
h2 { font-size: clamp(22px, 3.2vw, 30px); margin: 32px 0 10px; }
h3 { font-size: 20px; margin: 22px 0 8px; }
.lede { font-size: 19px; max-width: 640px; color: var(--ink-2); }
.cta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.btn { display: inline-flex; padding: 12px 16px; text-decoration: none; font-weight: 700; border: 1px solid var(--ink); }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.ghost { background: transparent; color: var(--ink); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 32px 0 8px; }
.stat { background: var(--white); border: 1px solid var(--line); padding: 16px; }
.stat b { display: block; font-family: Fraunces, serif; font-size: 24px; }
.stat span { font-size: 13px; color: var(--ink-2); }
.chapter-head { padding: 36px 0 8px; }
.lo { background: var(--paper-2); border: 1px solid var(--line); padding: 14px 16px; margin: 0 0 22px; }
.lo b { display: block; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ember); margin-bottom: 4px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 8px 8px 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
ul.check { list-style: none; padding: 0; }
ul.check li { padding: 7px 0; border-bottom: 1px dashed var(--line); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.do, .dont { padding: 14px 16px; border: 1px solid var(--line); }
.do { border-left: 4px solid var(--good); }
.dont { border-left: 4px solid var(--bad); }
.do h4, .dont h4 { margin: 0 0 8px; font-family: Figtree, sans-serif; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.do h4 { color: var(--good); }
.dont h4 { color: var(--bad); }
.note { background: var(--paper-2); border: 1px solid var(--line); padding: 14px 16px; }
.srcbox { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--sky); padding: 14px 16px; margin: 18px 0; }
.srcbox .who { font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--sky); margin-bottom: 6px; }
.embed { margin: 18px 0; }
.drill { background: var(--white); border: 1px dashed var(--ember); padding: 16px 18px; margin: 18px 0; }
.drill .n { font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--ember); }
.ex, .anti { padding: 14px 16px; margin: 14px 0; border: 1px solid var(--line); background: var(--white); }
.ex { border-left: 4px solid var(--good); }
.anti { border-left: 4px solid var(--bad); }
.ex b, .anti b { display: block; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 6px; }
.ex b { color: var(--good); }
.anti b { color: var(--bad); }
.pager { display: flex; justify-content: space-between; gap: 12px; padding: 16px 0 72px; font-weight: 700; }
footer { border-top: 1px solid var(--line); padding: 28px 0 48px; font-size: 14px; color: var(--ink-2); }
.done-bar { position: fixed; right: 16px; bottom: 16px; z-index: 30; background: var(--ink); color: var(--paper); padding: 10px 14px; font-size: 13px; font-weight: 700; }
.toc { list-style: none; padding: 0; margin: 0; }
.toc li { border-bottom: 1px solid var(--line); }
.toc a { display: flex; gap: 14px; padding: 14px 4px; text-decoration: none; color: inherit; }
.toc .num { font-family: Fraunces, serif; font-weight: 650; width: 42px; color: var(--ember); }
.syllabus { padding-bottom: 64px; }
@media (max-width: 800px) { .stats, .two { grid-template-columns: 1fr; } }
.tpl { background: var(--white); border: 1px solid var(--line); padding: 12px 16px; margin: 12px 0 18px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 14px; line-height: 1.55; white-space: pre-wrap; overflow-wrap: anywhere; }
.note b { display: block; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ember); margin-bottom: 4px; }
.nav-right { display: flex; align-items: center; gap: 10px; }
.pdf-link { font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; text-decoration: none; color: #fff; background: #0b6e6b; padding: 8px 12px; white-space: nowrap; }
.pdf-link:hover { background: #084f4d; }
@media (max-width: 480px) { .pdf-link { padding: 8px; font-size: 12px; } .brand { font-size: 15px; } }