*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:#0c0c0e;color:#e7e7e9;font-family:Arial,sans-serif;font-size:16px;line-height:1.7}a{color:#e6c887;text-underline-offset:4px}a:focus-visible{outline:3px solid #f2d797;outline-offset:5px}.skip{position:absolute;top:-100px}.skip:focus{top:12px;z-index:10;background:#111;padding:10px}header{padding:22px max(5vw,20px);display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid #34343a;background:#101014}header .brand{font-size:20px;font-weight:800;letter-spacing:1px;text-decoration:none;color:white}.brand span{display:block;font-size:12px;letter-spacing:4px;color:#b5b5be}nav{display:flex;flex-wrap:wrap;gap:24px}nav a{text-decoration:none;font-size:14px}nav [aria-current]{border-bottom:2px solid #e6c887}.intro{max-width:1180px;margin:auto;padding:65px 30px 55px;position:relative}.intro img{float:right;object-fit:contain}.eyebrow{font-size:13px;font-weight:bold;letter-spacing:2px;color:#d5b778}h1{font-size:clamp(36px,5vw,64px);line-height:1.1;letter-spacing:-2px;margin:22px 0}h1 em{font-style:normal;color:#d8c199}.intro>p:not(.eyebrow){max-width:660px;color:#bdbdc5;font-size:19px}.button{display:inline-block;background:#e4cc96;color:#161619;padding:13px 22px;text-decoration:none;font-weight:bold;border-radius:5px;margin:12px 16px 0 0}.download{display:inline-block;margin-top:12px}.layout{max-width:1180px;margin:auto;display:grid;grid-template-columns:260px minmax(0,1fr);gap:48px;padding:0 30px 70px}.contents{align-self:start;position:sticky;top:24px;border-top:1px solid #5f5135;padding-top:16px}.contents h2{font-size:16px;margin:0 0 14px}.contents a{display:flex;gap:12px;padding:9px 0;color:#c8c8d0;text-decoration:none;font-size:14px;line-height:1.4}.contents a:hover{color:#e6c887}.contents span{color:#d5b778;font-size:12px;min-width:20px}.lesson{border-top:1px solid #3a3a42;padding:32px 0 40px}.lesson h2{font-size:30px;line-height:1.25;margin:10px 0 24px}.lesson h3{font-size:19px;line-height:1.35;margin:25px 0 12px}.lesson p{color:#cbcad0;margin:0 0 18px}.note{padding:20px 22px;background:#1b1a17;border-left:3px solid #bc9b55;margin:23px 0}.note h3{color:#e6c887;font-size:16px;margin:0 0 10px}.note p{margin:0}.table-wrap{overflow-x:auto;margin:24px 0}table{width:100%;border-collapse:collapse;font-size:15px}th{text-align:left;background:#26231d;color:#e6c887}th,td{padding:14px;border-bottom:1px solid #37373c;vertical-align:top}td:first-child{width:27%;color:#f4f4f5}td{color:#c8c8d0}.references{padding-left:20px}.references li{margin-bottom:9px}.broker-link{font-weight:bold}footer{border-top:1px solid #34343a;padding:35px;text-align:center;color:#aaa;font-size:14px}@media(max-width:760px){header{align-items:flex-start;flex-direction:column;gap:12px}nav{gap:18px}.layout{display:block;padding:0 20px 40px}.contents{position:static;margin-bottom:30px}.contents a{padding:10px 0}.intro{padding:36px 20px}.intro img{width:46px;height:60px}.lesson h2{font-size:26px}.download{font-size:15px}th,td{padding:10px;font-size:14px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Expandable beginner topics */
.guide-hint{color:#bdbdc5;margin:0 0 18px;font-size:15px}
details.lesson{padding:0;margin:0 0 14px;border:1px solid #3a352b;border-radius:10px;background:#111113;overflow:hidden;scroll-margin-top:24px}
.lesson summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 24px;min-height:82px}
.lesson summary::-webkit-details-marker{display:none}
.lesson summary:hover{background:#1d1b16}
.lesson summary:focus-visible{outline:3px solid #e6c887;outline-offset:-4px}
.lesson-heading{display:block;min-width:0}.lesson-heading .eyebrow{display:block;font-size:11px;margin-bottom:8px;color:#d5b778}
.lesson-title{display:block;font-size:22px;font-weight:700;line-height:1.3;color:#eee}
.lesson-toggle{flex:none;color:#e6c887;font-size:28px;line-height:1;width:30px;text-align:center}
.lesson[open]{border-color:#b99b5c}.lesson[open]>summary{border-bottom:1px solid #3a352b;background:#201d16}
.lesson[open] .lesson-toggle{font-size:0}.lesson[open] .lesson-toggle::after{content:'−';font-size:28px}
.lesson-body{padding:24px}.lesson-body>:last-child{margin-bottom:0}
@media(max-width:760px){.contents a{border:1px solid #3a352b;border-radius:6px;padding:12px;margin-bottom:8px;background:#151416}.lesson summary{padding:18px 16px}.lesson-title{font-size:20px}.lesson-body{padding:20px 16px}.contents{margin-bottom:24px}}

.setup-example{margin:28px 0}.setup-example a{display:block}.setup-example img{display:block;width:100%;height:auto;border:1px solid #665332;border-radius:8px}.setup-example figcaption{font-size:13px;line-height:1.6;color:#bdbdc5;margin-top:10px}