:root{--id-navy: #1D203A;--id-navy-900: #11142B;--id-navy-700: #1D203A;--id-navy-600: #2A2F55;--id-navy-500: #3A4072;--id-red: #ED1D25;--id-red-600: #C8141B;--id-red-700: #A60F15;--id-scarlet: #FE0345;--id-ink: #161A2E;--id-slate-800: #2C3142;--id-slate-700: #363C50;--id-slate-600: #4A5168;--id-slate-500: #6B7288;--id-slate-400: #8A91A6;--id-slate-300: #B9BFCE;--id-line: #E2E5EC;--id-line-soft: #EDEFF4;--id-mist: #F4F6FA;--id-bg: #E8EAED;--id-paper: #FFFFFF;--id-cyan: #38BDF8;--id-cyan-deep: #0E7FB0;--id-grid: rgba(56,189,248,.1);--id-grid-ink: rgba(29,32,58,.06);--id-success: #1F9D6B;--id-warning: #E6A100;--id-danger: #ED1D25;--id-info: #0E7FB0;--fg-1: var(--id-ink);--fg-2: var(--id-slate-600);--fg-3: var(--id-slate-400);--fg-on-dark: #EAF0F6;--fg-on-dark-2: #9DA6BE;--bg-1: var(--id-paper);--bg-2: var(--id-mist);--bg-dark: var(--id-navy-900);--font-display: "Zilla Slab", "Roboto Slab", Georgia, serif;--font-sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;--step-hero: clamp(2.75rem, 1.6rem + 4.4vw, 4.5rem);--step-h1: clamp(2.25rem, 1.6rem + 2.6vw, 3.25rem);--step-h2: clamp(1.75rem, 1.3rem + 1.6vw, 2.5rem);--step-h3: 1.5rem;--step-h4: 1.25rem;--step-lg: 1.125rem;--step-body: 1rem;--step-sm: .875rem;--step-xs: .75rem;--step-eyebrow:.8125rem;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 24px;--sp-6: 32px;--sp-7: 48px;--sp-8: 64px;--sp-9: 96px;--sp-10: 128px;--r-xs: 3px;--r-sm: 6px;--r-md: 10px;--r-lg: 16px;--r-xl: 24px;--r-pill: 999px;--sh-xs: 0 1px 2px rgba(17,20,43,.06);--sh-sm: 0 1px 2px rgba(17,20,43,.05), 0 2px 5px rgba(17,20,43,.05);--sh-md: 0 2px 4px rgba(17,20,43,.04), 0 5px 12px rgba(17,20,43,.06), 0 12px 26px rgba(17,20,43,.07);--sh-lg: 0 2px 6px rgba(17,20,43,.05), 0 10px 24px rgba(17,20,43,.09), 0 24px 50px rgba(17,20,43,.12);--sh-xl: 0 6px 14px rgba(17,20,43,.07), 0 22px 48px rgba(17,20,43,.14), 0 44px 88px rgba(17,20,43,.16);--sh-focus: 0 0 0 3px rgba(56,189,248,.4);--sh-lift-in: inset 0 1px 0 rgba(255,255,255,.66);--grad-navy-tile: linear-gradient(145deg, #2E3460, #14172E);--grad-card: linear-gradient(180deg, #ffffff, #fbfcfe);--ease: cubic-bezier(.22, .61, .36, 1);--ease-in-out: cubic-bezier(.65, 0, .35, 1);--dur-fast: .12s;--dur: .2s;--dur-slow: .36s;--container: 1200px;--container-wide: 1320px;--container-text: 720px}.id-eyebrow{font-family:var(--font-sans);font-size:var(--step-eyebrow);font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--id-red)}.id-hero{font-family:var(--font-display);font-size:var(--step-hero);font-weight:700;line-height:1.02;letter-spacing:-.01em;color:var(--fg-1);text-wrap:balance}.id-h1{font-family:var(--font-display);font-size:var(--step-h1);font-weight:700;line-height:1.08;letter-spacing:-.01em;color:var(--fg-1);text-wrap:balance}.id-h2{font-family:var(--font-display);font-size:var(--step-h2);font-weight:600;line-height:1.14;color:var(--fg-1);text-wrap:balance}.id-h3{font-family:var(--font-display);font-size:var(--step-h3);font-weight:600;line-height:1.2;color:var(--fg-1)}.id-h4{font-family:var(--font-sans);font-size:var(--step-h4);font-weight:600;line-height:1.3;color:var(--fg-1)}.id-lead{font-family:var(--font-sans);font-size:var(--step-lg);font-weight:400;line-height:1.6;color:var(--fg-2)}.id-body{font-family:var(--font-sans);font-size:var(--step-body);font-weight:400;line-height:1.65;color:var(--fg-1)}.id-small{font-family:var(--font-sans);font-size:var(--step-sm);line-height:1.5;color:var(--fg-2)}.id-caption{font-family:var(--font-sans);font-size:var(--step-xs);line-height:1.45;color:var(--fg-3)}.id-mono{font-family:var(--font-mono);font-size:var(--step-sm);letter-spacing:-.01em;color:var(--fg-2)}.id-kicker-mono{font-family:var(--font-mono);font-size:var(--step-xs);font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--id-cyan-deep)}*{box-sizing:border-box}html,body{margin:0}body{font-family:var(--font-sans);color:var(--fg-1);background:var(--id-mist);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font-family:inherit}:root{--ida-shell-h:68px;--ida-primary:var(--id-red);--ida-primary-600:var(--id-red-600);--ida-primary-700:var(--id-red-700)}[data-primary=navy]{--ida-primary:var(--id-navy);--ida-primary-600:var(--id-navy-600);--ida-primary-700:var(--id-navy-900)}.ida-app{min-height:100vh;display:flex;flex-direction:column;background:#fff}.ida-container{max-width:var(--container);margin:0 auto;padding:0 32px;width:100%}.ida-container.wide{max-width:var(--container-wide)}.ida-main{flex:1 0 auto}.ida-fadein{animation:idaFade var(--dur-slow) var(--ease) both}@keyframes idaFade{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.ida-btn{font-family:var(--font-sans);font-weight:600;font-size:15px;line-height:1;border-radius:var(--r-sm);padding:12px 20px;border:1.5px solid transparent;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:all var(--dur) var(--ease);white-space:nowrap;text-align:center}.ida-btn svg{width:17px;height:17px}.ida-btn-primary{background:var(--ida-primary);color:#fff}.ida-btn-primary:hover{background:var(--ida-primary-600)}.ida-btn-primary:active{background:var(--ida-primary-700);transform:translateY(1px)}.ida-btn-navy{background:var(--id-navy);color:#fff}.ida-btn-navy:hover{background:var(--id-navy-600)}.ida-btn-outline{background:#fff;color:var(--id-navy);border-color:var(--id-slate-300)}.ida-btn-outline:hover{border-color:var(--id-navy)}.ida-btn-ghost{background:transparent;color:var(--id-navy);border-color:transparent}.ida-btn-ghost:hover{background:var(--id-mist)}.ida-btn-ondark{background:transparent;color:#fff;border-color:#ffffff52}.ida-btn-ondark:hover{border-color:#fff;background:#ffffff1a}.ida-btn-sm{padding:9px 15px;font-size:13.5px}.ida-btn-lg{padding:15px 26px;font-size:16px}.ida-btn-block{width:100%}.ida-btn:disabled{background:var(--id-slate-300);color:#fff;border-color:transparent;cursor:not-allowed;transform:none}.ida-link{color:var(--ida-primary);font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px}.ida-link svg{width:16px;height:16px;transition:transform var(--dur) var(--ease)}.ida-link:hover svg{transform:translate(4px)}.ida-eyebrow{font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--ida-primary);display:inline-flex;align-items:center;gap:9px}.ida-eyebrow.on-dark{color:#fff}.ida-eyebrow:before{content:"";width:22px;height:2px;background:var(--ida-primary);flex:none}.ida-eyebrow.on-dark:before{background:var(--ida-primary)}.ida-chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--id-slate-600);background:var(--id-mist);border:1px solid var(--id-line);border-radius:var(--r-pill);padding:5px 12px;white-space:nowrap}.ida-chip svg{width:14px;height:14px}.ida-chip.selectable{cursor:pointer;transition:all var(--dur) var(--ease);background:#fff}.ida-chip.selectable:hover{border-color:var(--id-navy);color:var(--id-navy)}.ida-chip.active{background:var(--id-navy);border-color:var(--id-navy);color:#fff}.ida-badge{display:inline-flex;align-items:center;gap:5px;font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;padding:4px 9px;border-radius:var(--r-xs)}.ida-badge svg{width:12px;height:12px}.ida-badge-free{background:#1f9d6b1f;color:var(--id-success)}.ida-badge-paid{background:#ed1d251a;color:var(--id-red)}.ida-badge-soon{background:var(--id-mist);color:var(--id-slate-400);border:1px solid var(--id-line)}.ida-badge-new{background:var(--id-navy);color:#fff}.ida-badge-live{background:#1f9d6b24;color:var(--id-success)}.ida-stars{display:inline-flex;align-items:center;gap:3px;color:#e6a100}.ida-stars svg{width:15px;height:15px;fill:currentColor}.ida-rate{font-weight:700;color:var(--id-navy)}.ida-muted{color:var(--id-slate-400)}.ida-meta{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--id-slate-600)}.ida-meta svg{width:15px;height:15px;color:var(--id-slate-400)}.ida-ph{position:relative;overflow:hidden;background:repeating-linear-gradient(135deg,rgba(29,32,58,.05) 0 10px,transparent 10px 20px),var(--id-mist);display:flex;align-items:center;justify-content:center;color:var(--id-slate-400)}.ida-ph .lbl{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--id-slate-400);background:#ffffffb3;padding:4px 10px;border-radius:var(--r-pill);backdrop-filter:blur(2px)}.ida-ph.dark{background:repeating-linear-gradient(135deg,rgba(56,189,248,.08) 0 10px,transparent 10px 20px),var(--id-navy-900)}.ida-ph.dark .lbl{color:#9db0d6;background:#11142b8c}.ida-ph.circuit{background:var(--id-navy-900) url(/assets/brand/hero-circuit.png) center/cover}.ida-avatar{border-radius:50%;object-fit:cover;background:var(--id-navy-600);flex:none;display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-display);font-weight:700}.ida-nav{position:sticky;top:0;z-index:60;background:#ffffffe6;backdrop-filter:blur(14px);border-bottom:1px solid var(--id-line)}.ida-nav-inner{display:flex;align-items:center;gap:22px;height:var(--ida-shell-h)}.ida-brand{display:flex;align-items:center;gap:11px;cursor:pointer}.ida-brand img{height:30px;display:block}.ida-brand .div{width:1px;height:22px;background:var(--id-line)}.ida-brand .ac{font-family:var(--font-display);font-weight:700;font-size:19px;color:var(--id-navy);letter-spacing:-.01em}.ida-nav-links{display:flex;gap:4px;margin-left:6px}.ida-nav-links a{font-size:14.5px;font-weight:500;color:var(--id-slate-800);padding:8px 12px;border-radius:var(--r-sm);cursor:pointer;transition:all var(--dur) var(--ease)}.ida-nav-links a:hover{color:var(--id-navy);background:var(--id-mist)}.ida-nav-links a.active{color:var(--id-navy);font-weight:600}.ida-nav-search{margin-left:auto;display:flex;align-items:center;gap:9px;background:var(--id-mist);border:1px solid var(--id-line);border-radius:var(--r-pill);padding:8px 14px;min-width:220px;color:var(--id-slate-400);cursor:text;transition:border-color var(--dur) var(--ease)}.ida-nav-search:hover{border-color:var(--id-slate-300)}.ida-nav-search svg{width:16px;height:16px}.ida-nav-search span{font-size:13.5px}.ida-nav-cta{display:flex;gap:10px;align-items:center}.ida-nav-right{margin-left:auto;display:flex;gap:10px;align-items:center}.ida-icon-btn{width:38px;height:38px;border-radius:var(--r-sm);border:1px solid transparent;background:transparent;display:flex;align-items:center;justify-content:center;color:var(--id-slate-600);cursor:pointer;position:relative;transition:all var(--dur) var(--ease)}.ida-icon-btn:hover{background:var(--id-mist);color:var(--id-navy)}.ida-icon-btn svg{width:20px;height:20px}.ida-icon-btn .dot{position:absolute;top:7px;right:8px;width:7px;height:7px;border-radius:50%;background:var(--id-red);border:1.5px solid #fff}.ida-nav-avatar{width:38px;height:38px;font-size:14px;cursor:pointer;border:2px solid transparent;transition:border-color var(--dur) var(--ease)}.ida-nav-avatar:hover{border-color:var(--id-slate-300)}.ida-burger{display:none;background:none;border:0;cursor:pointer;color:var(--id-navy);margin-left:auto}.ida-mobile-menu{display:none}.ida-nav-mainsite{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:500;color:var(--id-slate-500);padding:8px 11px;border-radius:var(--r-sm);white-space:nowrap;transition:all var(--dur) var(--ease)}.ida-nav-mainsite:hover{color:var(--id-navy);background:var(--id-mist)}.ida-nav-mainsite svg{width:14px;height:14px;color:var(--id-slate-400)}.ida-nav-mainsite:hover svg{color:var(--id-navy)}@media(max-width:900px){.ida-nav-mainsite{display:none}}.ida-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px}.ida-form-grid .full{grid-column:1 / -1}.ida-form-grid select.ida-input{appearance:none;-webkit-appearance:none}@media(max-width:560px){.ida-form-grid{grid-template-columns:1fr}}.ida-hero{position:relative;overflow:hidden}.ida-hero.dark{background:var(--id-navy-900)}.ida-hero.dark .ida-hero-bg{position:absolute;inset:0;background:url(/assets/brand/hero-circuit.png) center right/cover no-repeat;opacity:.9}.ida-hero.dark .ida-hero-scrim{position:absolute;inset:0;background:linear-gradient(100deg,#0a0c1c 6%,#0a0c1cdb 46%,#0a0c1c59 84%)}.ida-hero-inner{position:relative;padding:84px 0 88px;max-width:660px}.ida-hero h1{font-family:var(--font-display);font-weight:700;font-size:clamp(2.5rem,1.6rem+2.9vw,3.5rem);line-height:1.04;letter-spacing:-.015em;margin:20px 0 0;text-wrap:balance}.ida-hero.dark h1{color:#fff}.ida-hero.dark h1 .accent{color:var(--id-red)}.ida-hero p.lead{font-size:18px;line-height:1.6;max-width:530px;margin:20px 0 30px}.ida-hero.dark p.lead{color:#c3cce0}.ida-hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}.ida-hero-stats{display:flex;gap:34px;margin-top:44px;flex-wrap:wrap}.ida-hero-stat .n{font-family:var(--font-display);font-weight:700;font-size:26px;line-height:1}.ida-hero.dark .ida-hero-stat .n{color:#fff}.ida-hero-stat .l{font-size:13px;margin-top:5px}.ida-hero.dark .ida-hero-stat .l{color:#8f9abb}.ida-hero.light{background:var(--id-mist);border-bottom:1px solid var(--id-line)}.ida-hero.light h1{color:var(--id-navy)}.ida-hero.light h1 .accent{color:var(--id-red)}.ida-hero.light p.lead{color:var(--id-slate-600)}.ida-hero.light .ida-hero-stat .n{color:var(--id-navy)}.ida-hero.light .ida-hero-stat .l{color:var(--id-slate-400)}.ida-hero.light .ida-hero-inner{max-width:none;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:72px 0}.ida-hero.light .ida-hero-copy{max-width:560px}.ida-hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--sh-lg);border:1px solid var(--id-line)}.ida-section{padding:76px 0}.ida-section.tight{padding:52px 0}.ida-section.tint{background:var(--id-mist)}.ida-section.navy{background:var(--id-navy-900);position:relative;overflow:hidden}.ida-grid-bg:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(56,189,248,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(56,189,248,.07) 1px,transparent 1px);background-size:42px 42px;mask-image:radial-gradient(ellipse at 50% 40%,#000,transparent 78%);pointer-events:none}.ida-shead{max-width:660px;margin-bottom:36px}.ida-shead.center{margin-left:auto;margin-right:auto;text-align:center}.ida-shead h2{font-family:var(--font-display);font-weight:700;font-size:clamp(1.8rem,1.4rem+1.4vw,2.4rem);line-height:1.12;color:var(--id-navy);margin:12px 0 0;letter-spacing:-.01em;text-wrap:balance}.ida-shead.on-dark h2{color:#fff}.ida-shead p{font-size:16.5px;line-height:1.6;color:var(--id-slate-600);margin:12px 0 0}.ida-shead.on-dark p{color:#a7b0cc}.ida-shead-row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}.ida-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.ida-cards.dense{grid-template-columns:repeat(4,1fr);gap:16px}.ida-cards.two{grid-template-columns:repeat(2,1fr)}.ida-ccard{background:#fff;border:1px solid var(--id-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-xs);transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);cursor:pointer;display:flex;flex-direction:column}.ida-ccard:hover{box-shadow:var(--sh-md);transform:translateY(-4px);border-color:var(--id-slate-300)}.ida-ccard.soon{cursor:default;opacity:.92}.ida-ccard.soon:hover{transform:none;box-shadow:var(--sh-xs);border-color:var(--id-line)}.ida-ccard-thumb{position:relative;aspect-ratio:16/9;background:var(--id-navy-900)}.ida-ccard-thumb .ida-ph{position:absolute;inset:0}.ida-ccard-thumb .tt{position:absolute;top:12px;left:12px;display:flex;gap:7px}.ida-ccard-thumb .lvl{position:absolute;bottom:12px;left:12px;font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:#fff;background:#11142b99;padding:4px 9px;border-radius:var(--r-xs);backdrop-filter:blur(3px)}.ida-ccard-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}.ida-ccard .track{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--id-slate-400);margin-bottom:9px}.ida-ccard h3{font-family:var(--font-display);font-weight:600;font-size:18.5px;line-height:1.22;color:var(--id-navy);margin:0 0 8px;text-wrap:balance}.ida-ccard .desc{font-size:13.5px;line-height:1.55;color:var(--id-slate-600);margin:0 0 16px;flex:1}.ida-ccard-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:14px;border-top:1px solid var(--id-line-soft)}.ida-ccard-foot .price{font-family:var(--font-display);font-weight:700;font-size:17px;color:var(--id-navy)}.ida-ccard-foot .price small{font-family:var(--font-sans);font-weight:500;font-size:12px;color:var(--id-slate-400)}.ida-ccard-meta{display:flex;align-items:center;gap:14px;margin:0 0 14px;font-size:12.5px;color:var(--id-slate-500)}.ida-progress{height:6px;border-radius:var(--r-pill);background:var(--id-line);overflow:hidden}.ida-progress>i{display:block;height:100%;border-radius:var(--r-pill);background:var(--ida-primary)}.ida-progress.green>i{background:var(--id-success)}.ida-path{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;position:relative}.ida-path-step{background:#fff;border:1px solid var(--id-line);border-radius:var(--r-md);padding:18px 16px;position:relative;transition:all var(--dur) var(--ease)}.ida-path-step:hover{border-color:var(--id-slate-300);box-shadow:var(--sh-sm)}.ida-path-step .n{font-family:var(--font-mono);font-size:11px;color:var(--ida-primary);font-weight:500}.ida-path-step h4{font-family:var(--font-display);font-weight:600;font-size:15.5px;color:var(--id-navy);margin:8px 0 5px;line-height:1.2}.ida-path-step p{font-size:12.5px;line-height:1.45;color:var(--id-slate-500);margin:0}.ida-path-step 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svg{width:30px;height:30px;color:#fff;margin-left:4px}.ida-scrub{position:absolute;left:0;right:0;bottom:0;padding:14px 18px;background:linear-gradient(0deg,rgba(0,0,0,.6),transparent);display:flex;align-items:center;gap:14px;color:#fff}.ida-scrub .bar{flex:1;height:4px;border-radius:var(--r-pill);background:#ffffff47;overflow:hidden;cursor:pointer}.ida-scrub .bar>i{display:block;height:100%;background:var(--id-red);border-radius:var(--r-pill)}.ida-scrub .tm{font-family:var(--font-mono);font-size:12px}.ida-scrub svg{width:18px;height:18px;cursor:pointer}.ida-lesson-head{padding:20px 28px;border-bottom:1px solid var(--id-line)}.ida-lesson-head .pt{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ida-primary)}.ida-lesson-head h1{font-family:var(--font-display);font-weight:700;font-size:22px;color:var(--id-navy);margin:6px 0 0}.ida-ltabs{display:flex;gap:2px;padding:0 28px;border-bottom:1px solid var(--id-line);background:#fff}.ida-ltab{padding:14px 16px;font-size:14px;font-weight:600;color:var(--id-slate-500);border-bottom:2px solid transparent;margin-bottom:-1px;cursor:pointer;transition:all var(--dur) var(--ease)}.ida-ltab.active{color:var(--id-navy);border-color:var(--id-red)}.ida-ltab:hover{color:var(--id-navy)}.ida-lbody{padding:26px 28px;overflow:auto}.ida-lbody p{font-size:15px;line-height:1.7;color:var(--id-slate-700);max-width:640px}.ida-lfoot{margin-top:auto;padding:16px 28px;border-top:1px solid var(--id-line);display:flex;justify-content:space-between;align-items:center;background:#fff}.ida-rail{background:#fff;border-left:1px solid var(--id-line);display:flex;flex-direction:column;overflow:hidden}.ida-rail-head{padding:18px 20px;border-bottom:1px solid var(--id-line)}.ida-rail-head h3{font-family:var(--font-display);font-weight:700;font-size:16px;color:var(--id-navy);margin:0 0 8px}.ida-rail-head 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