/* Clean white foundation, retaining ISEI's refreshed layouts. */
:root{--bg:#fff;--panel:#fff;--line:#e1e7e9;--ink:#182e3c;--muted:#63717c;--lime:#d2f66b}body{background:#fff;color:var(--ink)}em{color:#487b26}.eyebrow{color:#53752f}.pill{color:#486035;border-color:#dce6d1}.announcement{background:#f2f8e8;color:#405234}.brand small{color:#63717c}header nav{color:#465864}header nav a:hover,header nav .current{color:#497624}.categories>a,.course-card,.panel{background:#fff;border-color:#e0e7e9;box-shadow:0 9px 35px #20354206}.categories span,.categories p{color:#667680}.categories b,.course-bottom span,.trust b{color:#517d2d}.outline{border-color:#cfdcc8;color:#304c2d}.outline:hover{background:#f4f9ee}.disciplines{background:#fff;border-color:#e1e7e9}.disciplines strong{color:#435564}.disciplines span{color:#77828b}.verify{background:#fff;border-color:#dbe5d5}.verify>span{color:#638b39}.cta{background:#f3f9e9;border:1px solid #e2edcf}.cta .button{background:#d2f66b;color:#22371d;border-color:#b7d957}.footer-grid a:not(.brand){color:#5e707d}.footer-bottom{color:#6c7c85}.panel input,.panel textarea,.panel select{background:#fff;border-color:#d4dfe4;color:#1c3442}.panel p a,.checkbox a{color:#3e6c2d}.password-toggle{color:#486c2a}.filters button{border-color:#dbe3e5;color:#526773}.filters .active{border-color:#badc7c}.catalog-tools input{background:#fff;border-color:#d6e1e5;color:#1a3342}.auth-art{color:#b4d977}.form-status,#auth-message{color:#9b3630}#auth-message{background:#fff4ee;border:1px solid #f0d4ca}.hero-visual{background:#f0f4ed}.feature>b,summary span{color:#5c8433}.about-image>span{background:#d2f66b}.tag{background:#f7fbea;color:#3e5c2f}.auth .panel{box-shadow:0 16px 55px #18334408}
/* Preserve the original full-bleed welcome/video section. */
.home__container{position:relative;isolation:isolate;display:flex;align-items:center;justify-content:center;min-height:650px;height:calc(100svh - 130px);max-height:1000px;width:100%;overflow:hidden;text-align:center;background:#fff}.hero-background{position:absolute;inset:0;z-index:-3}.hero-background>img,.hero-background>video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.hero-background>img{object-position:center}.hero-overlay{position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#081e33ad,#081e3373,#081e33a6)}.container__info{position:relative;width:min(1040px,calc(100% - 100px));padding:45px 0;color:#fff}.hero-kicker{display:inline-block;color:#fff;font-size:11px;font-weight:600;letter-spacing:.3em;margin-bottom:18px}.container__info h1{font-size:clamp(32px,4.2vw,64px);line-height:1.18;letter-spacing:.045em;font-weight:800;color:#ffdd00;text-wrap:balance;margin:10px 0 24px;text-shadow:0 2px 20px #0003}.container__info h2{font-size:clamp(22px,2.6vw,38px);font-weight:500;letter-spacing:.16em;color:#fff;margin:0 0 20px}.container__info p{color:#f0f4f7;font-size:16px;margin:0 0 34px}.container__info .button{background:#ffdd00;border-color:#ffdd00;color:#1b2a30;padding:15px 29px;gap:25px}.container__info .button:hover{background:#ffe95c}.hero-social{position:absolute;right:30px;top:50%;display:flex;align-items:center;justify-content:center;width:44px;height:44px;color:#fff;border:1px solid #ffffff66;border-radius:9px;background:#ffffff12}.hero-social svg{width:19px;height:19px}.hero-video-toggle{position:absolute;bottom:30px;right:30px;display:flex;gap:9px;align-items:center;padding:10px 14px;background:#102e3a70;color:white;border:1px solid #ffffff66;border-radius:7px;font-size:11px;backdrop-filter:blur(6px)}.hero-scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);font-size:10px;letter-spacing:.05em;color:#fff;display:flex;flex-direction:column;gap:4px}.hero-scroll span{font-size:21px}
/* Original dropdown categories with responsive, keyboard accessible menus. */
.site-header{position:relative;z-index:20;background:#fff;max-width:none;padding:0 max(30px,calc((100% - 1280px)/2));gap:22px}.site-header nav{gap:22px}.dropdown-trigger{display:inline-flex;gap:6px;align-items:center;border:0;background:none;color:#465864;padding:36px 0;font-size:12px;white-space:nowrap}.dropdown-trigger[aria-expanded=true]{color:#457127}.dropdown-trigger span{transition:transform .2s}.dropdown-trigger[aria-expanded=true] span{transform:rotate(180deg)}.nav-dropdown{position:relative}.mega-menu{position:absolute;top:100%;left:-24px;display:flex;gap:35px;width:max-content;max-width:calc(100vw - 60px);padding:27px;border:1px solid #e2e8eb;border-top:3px solid #b4db6b;border-radius:0 0 13px 13px;background:#fff;box-shadow:0 20px 45px #17304316}.nav-group{min-width:175px;display:flex;flex-direction:column;gap:4px}.nav-group>strong{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:#69813f;padding:0 9px 10px}.nav-group>a{display:block;padding:8px 9px;border-radius:5px;color:#3f5563;font-size:12px}.nav-group>a:hover{background:#f3f9eb;color:#3e6428}.profile-link{display:flex;align-items:center;justify-content:center;color:#4e6470;padding:8px}.mobile-account{display:none}.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.info-grid .panel h2{font-size:27px}.info-grid .panel{scroll-margin-top:25px}.info-grid .outline{margin:8px 8px 0 0}.info-grid p{font-size:14px}
/* Familiar provider marks, separate from the site's accent colors. */
.social{gap:12px}.social>a{position:relative;min-height:46px;padding:11px 20px;border-radius:4px;font:500 14px/20px Arial,sans-serif;letter-spacing:.1px;box-shadow:none;transition:background .2s,box-shadow .2s}.provider-icon{width:20px;height:20px;flex:0 0 20px;object-fit:contain}.social .provider-google{background:#fff;border:1px solid #747775;color:#1f1f1f}.social .provider-google:hover{background:#f8faff;box-shadow:0 1px 3px #3c404326}.social .provider-facebook{background:#1877f2;border:1px solid #1877f2;color:#fff}.social .provider-facebook:hover{background:#166fe5;border-color:#166fe5}.social>a .provider-icon{position:absolute;left:14px}.social>a>span{padding:0 16px}.social>a:focus-visible{outline:3px solid #6896d8;outline-offset:3px}
@media(max-width:1200px){.site-header{padding:0 25px;gap:15px}.site-header nav{gap:16px}.site-header .brand{font-size:25px}.site-header .brand img{width:40px;height:40px}.site-header .signup{padding:11px 15px}.dropdown-trigger{font-size:11px}.mega-menu{gap:18px;padding:22px}.nav-group{min-width:160px}}
@media(min-width:801px) and (max-width:1100px){.site-header{height:85px}.site-header .menu{display:block;margin-left:auto;background:none;border:0;color:#243f4f;font-size:23px}.site-header nav{display:none;position:absolute;top:85px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:20px 30px;max-height:calc(100svh - 85px);overflow:auto;gap:0;border-bottom:1px solid #dce5e8}.site-header nav.open{display:flex}.site-header .mobile-account{display:block}.site-header nav>a{padding:12px}.nav-dropdown{width:100%}.dropdown-trigger{width:100%;justify-content:space-between;padding:13px 12px;font-size:13px}.mega-menu{position:static;width:100%;max-width:none;box-shadow:none;border:0;border-left:2px solid #cee79d;border-radius:0;gap:20px;padding:15px;margin:0 12px 10px;flex-wrap:wrap}}
@media(max-width:800px){.site-header{padding:0 20px;gap:14px;background:#fff}.site-header .menu{color:#243f4f}.site-header nav{background:#fff;align-items:stretch;gap:0;max-height:calc(100svh - 80px);overflow:auto;padding:15px 20px}.site-header nav>a{padding:12px;color:#425a67}.mobile-account{display:block}.profile-link{display:none}.dropdown-trigger{width:100%;justify-content:space-between;padding:13px 12px;font-size:13px}.mega-menu{position:static;width:calc(100% - 24px);max-width:none;box-shadow:none;border:0;border-left:2px solid #cee79d;border-radius:0;gap:20px;padding:15px;margin:0 12px 10px;flex-direction:column}.nav-group{min-width:0}.site-header .nav-group a{padding:8px;font-size:12px}.home__container{height:calc(100svh - 115px);min-height:580px;max-height:850px}.container__info{width:calc(100% - 50px);padding-bottom:70px}.container__info h1{font-size:clamp(28px,6vw,45px);letter-spacing:.025em}.container__info h2{font-size:21px;letter-spacing:.12em}.container__info p{font-size:13px;max-width:380px;margin:0 auto 28px}.hero-kicker{font-size:9px}.hero-social{top:auto;bottom:25px;right:auto;left:20px;width:36px;height:36px}.hero-video-toggle{right:20px;bottom:25px;padding:8px 10px;font-size:10px}.hero-scroll{bottom:22px;font-size:9px}.info-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.home__container video{display:none}}

/* Clearer navigation and a softer, more spacious dropdown. */
.site-header nav>a,.site-header .dropdown-trigger{font-size:16px;font-weight:700;letter-spacing:.005em;color:#263e4b}
.site-header nav{gap:26px}
.site-header .dropdown-trigger{gap:8px;padding:33px 0;cursor:pointer;transition:color .18s ease}
.site-header .dropdown-trigger>span{font-size:13px;color:#739044}
.site-header nav>a:hover,.site-header .dropdown-trigger:hover,.site-header .dropdown-trigger[aria-expanded=true]{color:#527c29}
.site-header .header-actions>a{font-size:14px;font-weight:700}
.site-header .mega-menu{gap:24px;padding:24px;border:1px solid #e0e9d7;border-top:3px solid #b4d96d;border-radius:18px;background:linear-gradient(145deg,#fff 55%,#f7faef);box-shadow:0 18px 50px #1e3b2524,0 4px 12px #1e3b2509}
.site-header .nav-group{min-width:185px;gap:5px}
.site-header .nav-group+ .nav-group{border-left:1px solid #e2e9dc;padding-left:20px}
.site-header .nav-group>strong{font-size:11px;font-weight:800;letter-spacing:.12em;color:#6b843f;padding:5px 12px 12px;margin-bottom:3px;border-bottom:1px solid #e4ebdc}
.site-header .nav-group>a{position:relative;padding:11px 14px;font-size:14px;line-height:1.45;font-weight:600;border:1px solid transparent;border-radius:10px;color:#354d5a;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease}
.site-header .nav-group>a:hover{background:#eaf4d9;border-color:#d7e7bf;color:#355d20;transform:translateX(3px)}
.site-header a:focus-visible,.site-header button:focus-visible{outline:3px solid #95bd55;outline-offset:4px;border-radius:7px}
@media(min-width:1101px) and (max-width:1300px){.site-header nav{gap:17px}.site-header nav>a,.site-header .dropdown-trigger{font-size:14px}.site-header .mega-menu{gap:18px;padding:20px}.site-header .nav-group{min-width:165px}.site-header .nav-group+ .nav-group{padding-left:15px}.site-header .nav-dropdown:last-of-type .mega-menu{left:auto;right:0}}
@media(max-width:1100px){.site-header nav{gap:3px}.site-header nav>a,.site-header .dropdown-trigger{font-size:16px;padding:14px 12px}.site-header .mega-menu{width:calc(100% - 12px);max-width:100%;margin:2px 6px 12px;padding:18px;border:1px solid #e0e9d7;border-left:3px solid #b4d96d;border-radius:12px;box-shadow:none;gap:18px}.site-header .nav-group{min-width:0;flex:1}.site-header .nav-group+ .nav-group{border-left:0;padding-left:0}.site-header .nav-group>a{font-size:14px;padding:11px 12px}.site-header .nav-group>strong{font-size:11px}}
@media(prefers-reduced-motion:reduce){.site-header .nav-group>a,.site-header .dropdown-trigger{transition:none}.site-header .nav-group>a:hover{transform:none}}