:root{--navy:#16233A;--ink:#0D1B2A;--amber:#F5A623;--gold:#FFC64F;--sand:#FBF6EC;--slate:#5A6474;--cloud:#EAF0F7;--line:#E3D8BF;--green:#2FA96B}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:'Space Grotesk','Poppins',sans-serif;color:#1c2740;background:var(--sand);line-height:1.65}
[dir=rtl] body{font-family:'Tajawal',sans-serif}
a{color:#C97E12;text-decoration:none;font-weight:600}a:hover{text-decoration:underline}
.skip{position:fixed;left:-999px;top:8px;z-index:60;background:var(--amber);color:var(--navy);padding:10px 16px;border-radius:8px;font-weight:700}.skip:focus{left:8px}
.progress{position:fixed;top:0;inset-inline:0;height:3px;background:linear-gradient(90deg,var(--gold),var(--amber));width:0;z-index:40;transition:width .1s}
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:14px;background:var(--ink);padding:10px 18px;box-shadow:0 2px 12px rgba(13,27,42,.25)}
.topbar .brand img{height:34px;display:block}
.course-tag{color:var(--cloud);font-family:'Sora',sans-serif;font-weight:600;font-size:.95rem;opacity:.9}.course-tag:hover{color:var(--gold);text-decoration:none}
.search-btn{margin-inline-start:auto;background:rgba(255,255,255,.08);border:0;color:var(--sand);font-size:1rem;cursor:pointer;padding:7px 12px;border-radius:20px}
.search-btn:hover{background:var(--amber)}
.topbar .lang{color:var(--sand);background:rgba(255,255,255,.08);padding:7px 14px;border-radius:20px;font-size:.9rem;font-weight:700;white-space:nowrap}
.topbar .lang:hover{background:var(--amber);color:var(--navy);text-decoration:none}
.menu{display:none;background:none;border:0;color:var(--sand);font-size:1.5rem;cursor:pointer;padding:0 4px}
.backdrop{display:none;position:fixed;inset:0;background:rgba(13,27,42,.45);z-index:18}body.nav-open .backdrop{display:block}
.layout{display:flex;align-items:flex-start;max-width:1340px;margin:0 auto}
.sidebar{position:sticky;top:54px;flex:0 0 300px;height:calc(100vh - 54px);overflow-y:auto;padding:18px 16px;background:#fff;border-inline-end:1px solid var(--line)}
.progress-box{background:var(--sand);border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin:0 4px 14px}
.pb-top{display:flex;justify-content:space-between;font-size:.78rem;font-weight:700;color:var(--slate);font-family:'Sora',sans-serif}
.pb-bar{height:7px;background:#e7ddc9;border-radius:6px;margin-top:7px;overflow:hidden}
.pb-fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--green));transition:width .3s}
.nav-ov{display:block;padding:8px 12px;border-radius:10px;color:var(--navy);font-weight:700}
.nav-block{margin:16px 8px 6px;font-family:'Sora',sans-serif;font-weight:700;font-size:.76rem;letter-spacing:.5px;color:var(--slate);text-transform:uppercase}
.nav-week{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:10px;color:#2a3852;font-weight:500;font-size:.95rem}
.nav-week:hover,.nav-ov:hover{background:var(--cloud);text-decoration:none}
.nav-week .wk{flex:0 0 24px;height:24px;display:grid;place-items:center;background:var(--sand);border:1px solid var(--line);border-radius:7px;font-size:.8rem;font-weight:700;color:var(--slate)}
.nav-week.done .wk{background:var(--green);border-color:var(--green);color:#fff;font-size:0}
.nav-week.done .wk::after{content:"✓";font-size:.85rem}
.nav-week.active,.nav-ov.active{background:#FFF6E4;color:var(--navy);box-shadow:inset 3px 0 0 var(--amber)}
[dir=rtl] .nav-week.active,[dir=rtl] .nav-ov.active{box-shadow:inset -3px 0 0 var(--amber)}
.nav-week.active .wk{background:var(--amber);color:#fff;border-color:var(--amber)}
.nav-week.active.done .wk{background:var(--green);border-color:var(--green)}
.content{flex:1;min-width:0;max-width:820px;padding:34px 48px 60px}
.content h1,.content h2,.content h3{scroll-margin-top:74px}
.meta-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:6px}
.pill{background:#fff;border:1px solid var(--line);color:var(--slate);font-size:.78rem;font-weight:600;padding:4px 12px;border-radius:20px}
.content h1{font-family:'Sora',sans-serif;font-size:2.1rem;color:var(--navy);margin:.2em 0 .4em}
.content h2{font-family:'Sora',sans-serif;color:var(--navy);border-bottom:3px solid var(--amber);padding-bottom:6px;margin:1.6em 0 .6em;display:inline-block}
.content h3{color:#22406b;font-family:'Sora',sans-serif}
.content img{max-width:100%;height:auto;border-radius:10px}
.content blockquote{background:#FFF6E4;border-inline-start:5px solid var(--amber);margin:1em 0;padding:12px 18px;border-radius:8px}
.content table{border-collapse:collapse;width:100%;margin:1em 0;font-size:.95rem}
.content th,.content td{border:1px solid var(--line);padding:8px 12px;text-align:start}
.content th{background:var(--navy);color:var(--sand);font-family:'Sora',sans-serif}
.content tr:nth-child(even){background:#fff}
.content details{background:#F4F7FB;border:1px solid #dbe3ee;border-radius:10px;padding:10px 16px;margin:10px 0}
.content summary{cursor:pointer;font-weight:600;color:var(--navy)}
.content pre{position:relative;background:var(--ink);color:var(--cloud);padding:16px 18px;border-radius:12px;overflow:auto;direction:ltr;text-align:left}
.content pre code{font-family:'DejaVu Sans Mono',ui-monospace,monospace;font-size:.9rem}
.content :not(pre)>code{background:#eef2f7;color:var(--navy);padding:2px 6px;border-radius:5px;font-family:ui-monospace,monospace;font-size:.9em}
.content hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.content a.ext::after{content:"↗";font-size:.75em;vertical-align:super;opacity:.7;margin-inline-start:2px}
.copy{position:absolute;top:8px;inset-inline-end:8px;background:#24344f;color:var(--cloud);border:0;border-radius:7px;padding:5px 10px;font-size:.75rem;font-weight:700;cursor:pointer;opacity:0;transition:.15s;font-family:'Space Grotesk',sans-serif}
.content pre:hover .copy{opacity:1}.copy:hover{background:var(--amber);color:var(--navy)}
.lesson-actions{margin-top:34px}
.done-btn{display:inline-flex;align-items:center;gap:8px;background:#fff;border:2px solid var(--line);border-radius:26px;padding:10px 20px;font-weight:700;color:var(--slate);cursor:pointer;font-family:inherit;font-size:.95rem}
.done-btn:hover{border-color:var(--green)}
.done-btn .db-check{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;border:2px solid var(--line);font-size:.75rem;color:transparent}
.done-btn.is-done{border-color:var(--green);color:var(--green);background:#eaf7f0}
.done-btn.is-done .db-check{background:var(--green);border-color:var(--green);color:#fff}
.prevnext{display:flex;justify-content:space-between;gap:12px;margin-top:24px;border-top:1px solid var(--line);padding-top:20px}
.pn{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 18px;max-width:48%;font-weight:700;color:var(--navy)}
.pn:hover{border-color:var(--amber);text-decoration:none}.pn.next{margin-inline-start:auto;text-align:end}.pn-k{color:var(--amber);font-size:1.1rem}
.foot{margin-top:40px;color:var(--slate);font-size:.85rem;text-align:center}
.toc{position:sticky;top:74px;flex:0 0 210px;align-self:flex-start;max-height:calc(100vh - 90px);overflow-y:auto;padding:20px 14px;font-size:.86rem}
.toc-h{font-family:'Sora',sans-serif;font-weight:700;font-size:.72rem;letter-spacing:.5px;text-transform:uppercase;color:var(--slate);margin-bottom:8px}
.toc a{display:block;padding:5px 8px;border-radius:7px;color:#3a4a63;font-weight:500;border-inline-start:2px solid transparent}
.toc a:hover{background:#fff;text-decoration:none}
.toc a.active{color:var(--navy);border-inline-start-color:var(--amber);background:#FFF6E4}
.backtotop{position:fixed;bottom:22px;inset-inline-end:22px;width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;border:0;font-size:1.2rem;cursor:pointer;opacity:0;pointer-events:none;transition:.2s;z-index:25;box-shadow:0 4px 14px rgba(13,27,42,.3)}
.backtotop.show{opacity:1;pointer-events:auto}.backtotop:hover{background:var(--amber);color:var(--navy)}
/* search modal */
.search-modal{display:none;position:fixed;inset:0;z-index:50;background:rgba(13,27,42,.5);padding-top:10vh}
.search-modal.open{display:block}
.sm-panel{max-width:600px;margin:0 auto;background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.35);overflow:hidden}
.sm-input{width:100%;border:0;border-bottom:1px solid var(--line);padding:18px 22px;font-size:1.1rem;font-family:inherit;outline:none}
.sm-results{max-height:52vh;overflow-y:auto}
.sm-results a{display:flex;align-items:center;gap:10px;padding:12px 22px;color:var(--navy);border-bottom:1px solid #f1ece0}
.sm-results a:hover,.sm-results a.sel{background:#FFF6E4;text-decoration:none}
.sm-results .chip{flex:0 0 auto;background:var(--navy);color:var(--sand);font-size:.68rem;font-weight:700;padding:3px 8px;border-radius:20px}
.sm-results .chip.ar{background:var(--amber);color:var(--navy)}
.sm-empty{padding:22px;color:var(--slate)}
.sm-hint{padding:10px 22px;color:var(--slate);font-size:.78rem;background:var(--sand)}
/* account + auth */
.topbar .account-btn{color:var(--sand);background:rgba(255,255,255,.08);border:0;padding:7px 14px;border-radius:20px;font-size:.9rem;font-weight:700;cursor:pointer;font-family:inherit;white-space:nowrap;max-width:170px;overflow:hidden;text-overflow:ellipsis}
.topbar .account-btn:hover{background:var(--amber);color:var(--navy)}
.auth-modal{display:none;position:fixed;inset:0;z-index:55;background:rgba(13,27,42,.5);padding-top:12vh}
.auth-modal.open{display:block}
.am-panel{max-width:400px;margin:0 auto;background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.35);padding:26px}
.am-title{font-family:'Sora',sans-serif;font-weight:800;color:var(--navy);font-size:1.1rem;margin-bottom:16px}
.au-email,.au-pass{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:1rem;font-family:inherit;margin-bottom:10px;outline:none}
.au-email:focus,.au-pass:focus{border-color:var(--amber)}
.am-btns{display:flex;gap:10px;margin-top:6px}
.au-signin{flex:1;background:var(--amber);color:var(--navy);border:0;border-radius:10px;padding:12px;font-weight:800;cursor:pointer;font-family:inherit}
.au-signup{flex:1;background:#fff;color:var(--navy);border:2px solid var(--line);border-radius:10px;padding:12px;font-weight:700;cursor:pointer;font-family:inherit}
.au-signin:hover{filter:brightness(1.05)}.au-signup:hover{border-color:var(--amber)}
.au-msg{min-height:18px;color:#C0392B;font-size:.85rem;margin-top:10px}
.am-hint{color:var(--slate);font-size:.8rem;margin-top:8px}
/* course gating */
html.gating .layout{visibility:hidden}
html.locked .layout{display:none}
.gate-lock{display:none;position:fixed;inset:54px 0 0;z-index:22;background:var(--sand);align-items:center;justify-content:center;padding:24px}
html.locked .gate-lock{display:flex}
.gl-card{max-width:440px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px 30px;box-shadow:0 12px 40px rgba(13,27,42,.12)}
.gl-emoji{font-size:2.6rem;line-height:1}
.gl-title{font-family:'Sora',sans-serif;font-weight:800;color:var(--navy);font-size:1.3rem;margin:12px 0 8px}
.gl-msg{color:var(--slate);margin-bottom:22px;line-height:1.55}
.gl-btn{background:var(--amber);color:var(--navy);border:0;border-radius:24px;padding:12px 30px;font-weight:800;cursor:pointer;font-family:inherit;font-size:1rem}
.gl-btn:hover{filter:brightness(1.05)}
/* homepage */
.home{background:var(--ink);min-height:100vh}
.hero{text-align:center;padding:84px 20px 46px;background-image:linear-gradient(#0d1b2acc,#0d1b2acc),repeating-linear-gradient(60deg,#33507f22 0 1px,transparent 1px 34px),repeating-linear-gradient(-60deg,#33507f22 0 1px,transparent 1px 34px)}
.hero-logo{height:92px}.hero-tag{color:var(--amber);font-family:'Space Grotesk',sans-serif;letter-spacing:4px;font-weight:700;margin:24px 0 8px}
.hero-sub{color:var(--cloud);opacity:.85;margin:0}
.courses{max-width:960px;margin:0 auto;padding:14px 20px 50px;display:grid;grid-template-columns:1fr 1fr;gap:24px}
.course-card{background:#fff;border-radius:20px;padding:28px;position:relative}
.cc-badge{position:absolute;top:20px;inset-inline-end:20px;background:var(--amber);color:var(--navy);font-weight:800;font-size:.8rem;padding:4px 12px;border-radius:20px}
.course-card h3{font-family:'Sora',sans-serif;color:var(--navy);margin:.2em 0}
.cc-ar{font-family:'Tajawal',sans-serif;color:var(--slate);margin:.1em 0 .6em}
.cc-learn{color:#3a4a63;font-size:.92rem;margin:.2em 0 .5em}
.cc-badges{font-size:1.25rem;letter-spacing:3px;margin:.2em 0 1em}
.cc-links{display:flex;flex-direction:column;gap:8px}
.cc-links a{background:var(--sand);padding:10px 14px;border-radius:10px;color:var(--navy)}.cc-links a:hover{background:#FFF1D6;text-decoration:none}
.cc-links a.ar{font-family:'Tajawal',sans-serif;direction:rtl}
.home-foot{color:#6b7a90;text-align:center;padding:24px;font-size:.85rem}.hf-links{margin-top:6px}.hf-links a{color:#9fb2cc}
@media(max-width:1080px){.toc{display:none}}
@media(max-width:860px){
  .menu{display:block}.search-btn{margin-inline-start:auto}
  .sidebar{position:fixed;inset-block:54px 0;inset-inline-start:0;z-index:20;width:284px;flex-basis:284px;transform:translateX(-110%);transition:transform .22s}
  [dir=rtl] .sidebar{inset-inline-start:auto;inset-inline-end:0;transform:translateX(110%)}
  body.nav-open .sidebar{transform:translateX(0)}
  .content{padding:24px 20px 50px}.courses{grid-template-columns:1fr}.course-tag{display:none}
}
/* ============ LANDING PAGE ============ */
.home{background:var(--sand)}
.lp-nav{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:16px;background:var(--ink);padding:12px 26px;box-shadow:0 2px 14px rgba(13,27,42,.3)}
.lp-brand img{height:34px;display:block}
.lp-navlinks{display:flex;gap:22px;margin-inline-start:20px}
.lp-navlinks a{color:#cdd6e4;font-weight:600;font-size:.92rem}
.lp-navlinks a:hover{color:var(--gold);text-decoration:none}
.lang-toggle{margin-inline-start:auto;background:rgba(255,255,255,.08);color:var(--sand);border:0;border-radius:20px;padding:8px 15px;font-weight:700;cursor:pointer;font-family:inherit}
.lang-toggle:hover{background:var(--amber);color:var(--navy)}
.lp-nav .account-btn{background:var(--amber);color:var(--navy);border:0;border-radius:20px;padding:8px 18px;font-weight:800;cursor:pointer;font-family:inherit;white-space:nowrap}
.lp-nav .account-btn.nav-right{margin-inline-start:auto}
.lp-nav .account-btn:hover{filter:brightness(1.06)}
.lp-hero{background-color:var(--ink);background-image:linear-gradient(#0d1b2aee,#0d1b2aee),repeating-linear-gradient(60deg,#33507f22 0 1px,transparent 1px 34px),repeating-linear-gradient(-60deg,#33507f22 0 1px,transparent 1px 34px);color:var(--sand);display:flex;align-items:center;gap:40px;padding:64px 40px 74px;flex-wrap:wrap;justify-content:center}
.lp-hero-text{flex:1 1 440px;max-width:600px}
.lp-eyebrow{color:var(--gold);font-weight:700;letter-spacing:1px;font-size:.85rem}
.lp-h1{font-family:'Sora',sans-serif;font-weight:800;font-size:clamp(2rem,4.6vw,3.3rem);line-height:1.1;margin:14px 0 16px;color:#fff}
.lp-sub{color:#c7d2e2;font-size:1.08rem;max-width:54ch;margin:0 0 26px}
.lp-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{display:inline-block;background:var(--amber);color:var(--navy);border:0;border-radius:28px;padding:13px 28px;font-weight:800;font-size:1rem;cursor:pointer;font-family:inherit;box-shadow:0 8px 24px rgba(245,166,35,.35);transition:.15s}
.btn-primary:hover{filter:brightness(1.06);text-decoration:none;transform:translateY(-1px)}
.btn-ghost{display:inline-block;background:transparent;color:var(--sand);border:2px solid rgba(255,255,255,.35);border-radius:28px;padding:11px 26px;font-weight:700;font-size:1rem;cursor:pointer;font-family:inherit}
.btn-ghost:hover{border-color:var(--amber);color:var(--gold);text-decoration:none}
.btn-ghost.light{color:var(--navy);border-color:rgba(22,35,58,.3)}.btn-ghost.light:hover{border-color:var(--amber);color:#C97E12}
.lp-chips{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.lp-chips span.chip{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:20px;padding:7px 14px;font-size:.85rem;font-weight:600}
.ico{width:1em;height:1em;display:inline-block;vertical-align:middle;flex:0 0 auto}
.why-ico .ico{width:27px;height:27px}
.lp-chips .ico{width:16px;height:16px;color:var(--gold)}
.orbit .ico{width:26px;height:26px;color:#dbe4f0}
.lp-hero-art{position:relative;flex:0 0 260px;display:grid;place-items:center;min-height:260px}
.lp-hero-art img{width:200px;filter:drop-shadow(0 14px 30px rgba(0,0,0,.4))}
.orbit{position:absolute;font-size:1.6rem;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);width:52px;height:52px;border-radius:16px;display:grid;place-items:center;animation:float 4s ease-in-out infinite}
.orbit.o1{top:4%;inset-inline-start:6%}.orbit.o2{top:12%;inset-inline-end:2%;animation-delay:.6s}.orbit.o3{bottom:14%;inset-inline-start:0;animation-delay:1.2s}.orbit.o4{bottom:4%;inset-inline-end:10%;animation-delay:1.8s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.lp-stats{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;background:var(--navy);padding:20px;color:var(--sand)}
.lp-stats div{text-align:center;min-width:104px;padding:6px 16px}
.lp-stats b{display:block;font-family:'Sora',sans-serif;font-size:1.8rem;color:var(--gold);direction:ltr}
.lp-stats span{font-size:.84rem;color:#c7d2e2}
.lp-sec{max-width:1080px;margin:0 auto;padding:62px 24px}
.lp-h2{font-family:'Sora',sans-serif;font-weight:800;color:var(--navy);font-size:clamp(1.5rem,3vw,2.1rem);text-align:center;margin:0 0 8px}
.lp-lead{text-align:center;color:var(--slate);max-width:60ch;margin:0 auto 30px}
.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-top:28px}
.why-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 22px;transition:.18s}
.why-card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(13,27,42,.1)}
.why-ico{width:52px;height:52px;border-radius:14px;background:#FFF4E0;display:grid;place-items:center;color:var(--amber)}
.why-card h3{font-family:'Sora',sans-serif;color:var(--navy);margin:12px 0 8px;font-size:1.1rem}
.why-card p{color:var(--slate);margin:0;font-size:.95rem}
.lp-journey{background:#fff;max-width:none;border-block:1px solid var(--line)}
.lp-journey>*{max-width:1080px;margin-inline:auto}
.jr-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.jr-step{background:var(--sand);border:1px solid var(--line);border-radius:14px;padding:20px;display:flex;flex-direction:column;gap:4px}
.jr-n{width:44px;height:44px;border-radius:12px;background:#FFF4E0;display:grid;place-items:center;color:var(--amber);margin-bottom:8px}
.jr-n .ico{width:24px;height:24px}
.jr-step b{color:var(--navy);font-family:'Sora',sans-serif}
.jr-step span{color:var(--slate);font-size:.9rem}
.courses-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-top:8px}
.course-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;position:relative;text-align:start}
.course-card:hover{box-shadow:0 16px 40px rgba(13,27,42,.12)}
.cc-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.cc-badge{background:var(--amber);color:var(--navy);font-weight:800;font-size:.8rem;padding:4px 12px;border-radius:20px}
.cc-num{color:var(--slate);font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.5px}
.course-card h3{font-family:'Sora',sans-serif;color:var(--navy);margin:.2em 0 .1em;font-size:1.25rem}
.cc-ar{font-family:'Tajawal',sans-serif;color:var(--slate);margin:0 0 .6em}
.cc-learn{color:#3a4a63;font-size:.94rem;margin:.2em 0 .7em}
.cc-badges{display:flex;flex-wrap:wrap;gap:8px;margin:.4em 0 1.1em}
.cc-badges .ico{width:32px;height:32px;padding:6px;box-sizing:border-box;color:var(--amber);background:#FFF4E0;border-radius:9px}
.cc-links{display:flex;flex-direction:column;gap:8px}
.cc-links a{background:var(--sand);padding:11px 15px;border-radius:10px;color:var(--navy);font-weight:700;text-align:center}
.cc-links a:hover{background:#FFF1D6;text-decoration:none}
.cc-ar-link{font-family:'Tajawal',sans-serif}
.course-card.soon{border-style:dashed;background:#FAF6EC}
.course-card.soon .cc-badge{background:var(--slate);color:#fff}
.cc-soon-tag{display:inline-block;background:var(--slate);color:#fff;font-weight:800;font-size:.78rem;letter-spacing:.5px;padding:6px 15px;border-radius:20px;margin-top:8px}
.lp-how-sec .how-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px;margin-top:22px}
.how-step{text-align:center;padding:18px}
.how-n{display:inline-grid;place-items:center;width:46px;height:46px;border-radius:50%;background:var(--navy);color:var(--gold);font-family:'Sora',sans-serif;font-weight:800;font-size:1.2rem;margin-bottom:10px}
.how-step b{display:block;color:var(--navy);font-family:'Sora',sans-serif;margin-bottom:4px}
.how-step span{color:var(--slate);font-size:.92rem}
.lp-tools{text-align:center}
.tools-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:8px}
.tool-chip{background:#fff;border:1px solid var(--line);border-radius:22px;padding:10px 20px;font-weight:700;color:var(--navy)}
.lp-final{background-color:var(--ink);background-image:linear-gradient(#0d1b2aee,#0d1b2aee),repeating-linear-gradient(60deg,#33507f22 0 1px,transparent 1px 34px);color:var(--sand);text-align:center;padding:66px 24px}
.lp-final h2{font-family:'Sora',sans-serif;font-size:clamp(1.6rem,3vw,2.3rem);margin:0 0 10px;color:#fff}
.lp-final p{color:#c7d2e2;margin:0 0 24px}
.lp-final .lp-cta{justify-content:center}
.lp-foot{background:var(--navy);color:#9fb2cc;text-align:center;padding:40px 24px}
.lp-foot-logo{height:38px}
.lp-foot-tag{color:var(--gold);margin:12px 0;font-weight:600}
.lp-foot-links{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-bottom:10px}
.lp-foot-links a{color:#c7d2e2}
.lp-copy{font-size:.82rem;color:#6b7a90}
/* ---- enhanced auth modal ---- */
.am-panel{max-width:420px;margin:0 auto;background:#fff;border-radius:20px;padding:28px 26px 22px;position:relative;box-shadow:0 24px 70px rgba(0,0,0,.35)}
.am-close{position:absolute;top:10px;inset-inline-end:14px;background:none;border:0;font-size:1.7rem;line-height:1;color:var(--slate);cursor:pointer}
.am-close:hover{color:var(--navy)}
.am-head{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.am-spark{width:52px;height:52px;flex:0 0 auto}
.am-title{font-family:'Sora',sans-serif;font-weight:800;color:var(--navy);font-size:1.25rem}
.am-sub{color:var(--slate);font-size:.9rem}
.au-field{display:block;margin-bottom:14px}
.au-lab{display:block;font-weight:700;font-size:.82rem;color:var(--slate);margin-bottom:6px}
.au-email,.au-pass{width:100%;border:1.5px solid var(--line);border-radius:11px;padding:12px 14px;font-size:1rem;font-family:inherit;outline:none;background:var(--sand);margin-bottom:0}
.au-email:focus,.au-pass:focus{border-color:var(--amber);background:#fff}
.au-passwrap{position:relative;display:block}
.au-passwrap .au-pass{padding-inline-end:42px}
.au-eye{position:absolute;top:50%;inset-inline-end:8px;transform:translateY(-50%);background:none;border:0;font-size:1.1rem;cursor:pointer;padding:4px;line-height:1}
.au-signin{width:100%;background:var(--amber);color:var(--navy);border:0;border-radius:12px;padding:13px;font-weight:800;font-size:1rem;cursor:pointer;font-family:inherit;margin-top:4px;position:relative;min-height:48px}
.au-signin:hover{filter:brightness(1.05)}
.au-signin[disabled]{opacity:.85;cursor:default}
.au-spin{display:none;width:18px;height:18px;border:3px solid rgba(22,35,58,.35);border-top-color:var(--navy);border-radius:50%;position:absolute;top:50%;left:50%;margin:-9px 0 0 -9px;animation:spin .7s linear infinite}
.au-signin.is-loading .au-txt{visibility:hidden}
.au-signin.is-loading .au-spin{display:block}
@keyframes spin{to{transform:rotate(360deg)}}
.au-msg{min-height:20px;font-size:.9rem;font-weight:600;margin-top:10px;text-align:center}
.am-hint{color:var(--slate);font-size:.8rem;margin-top:12px;text-align:center;line-height:1.5}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:6px}
.js-anim .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.js-anim .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.js-anim .reveal{opacity:1;transform:none;transition:none}}
.lp-faq{max-width:820px}
.faq-list{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:2px 20px;transition:box-shadow .15s}
.faq-item[open]{box-shadow:0 10px 30px rgba(13,27,42,.08)}
.faq-item summary{cursor:pointer;font-family:'Sora',sans-serif;font-weight:700;color:var(--navy);padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.5rem;color:var(--amber);font-weight:400;line-height:1}
.faq-item[open] summary::after{content:"–"}
.faq-item p{margin:0 0 16px;color:var(--slate);line-height:1.6}
@media(max-width:760px){
  .lp-navlinks{display:none}
  .lp-hero{padding:44px 22px 54px;gap:24px}
  .lp-hero-art{flex-basis:180px;min-height:180px}.lp-hero-art img{width:140px}
  .lp-sec{padding:48px 20px}
}
@media print{.topbar,.sidebar,.toc,.prevnext,.backtotop,.progress,.backdrop,.menu,.skip,.lesson-actions,.search-modal,.auth-modal,.gate-lock{display:none!important}.content{max-width:100%;padding:0}body{background:#fff}}