.course-10e{
  --course:#2F6957;
  --course-deep:#1E493D;
  --course-soft:#E5EFEA;
  --course-line:#C7D9D1;
  --course-ink:#17252B;
  --course-muted:#607178;
  background:#F0F3F0;
}
.course-10e .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid #D9E0DC}
.course-10e .course-topbar{max-width:1240px;padding:16px 24px;gap:22px}
.course-brand{display:flex;align-items:center;gap:14px;min-width:290px}
.brand-mark{width:48px;height:48px;border-radius:12px;background:var(--course-soft);color:var(--course-deep);display:grid;place-items:center;border:1px solid var(--course-line);flex:0 0 auto}
.brand-mark svg{width:31px;height:31px}
.course-brand .eyebrow,.section-kicker,.card-label{font-size:.72rem;font-weight:800;letter-spacing:.12em;color:var(--course);text-transform:uppercase}
.course-brand h1{font-size:1.22rem;line-height:1.15;margin:2px 0 1px}
.course-brand p{font-size:.9rem;margin:0;color:var(--course-muted)}
.course-nav{gap:6px;align-items:center}
.course-nav button{border:0;background:transparent;border-radius:8px;padding:8px 10px;color:#33474F;font-size:.92rem;font-weight:600}
.course-nav button:hover{background:#F1F5F2;color:var(--course-deep)}
.course-nav button.primary{background:var(--course);color:#fff}
.course-nav .student-access{border:1px solid var(--course-line);margin-left:4px}
.course-main{max-width:1240px;margin:28px auto 0;padding:0 24px 56px}
.course-hero{position:relative;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);overflow:hidden;background:#fff;border:1px solid #D8E0DC;border-radius:22px;min-height:360px;box-shadow:0 14px 36px rgba(33,61,50,.06)}
.course-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(47,105,87,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(47,105,87,.045) 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(to right,transparent 15%,#000 100%);pointer-events:none}
.hero-copy{position:relative;z-index:2;padding:48px 52px;align-self:center}
.course-tag{display:inline-flex;border:1px solid var(--course-line);background:var(--course-soft);color:var(--course-deep);border-radius:999px;padding:5px 10px;font-size:.72rem;font-weight:800;letter-spacing:.11em}
.course-hero h2{font-size:clamp(2.2rem,5vw,4rem);line-height:1;margin:18px 0 8px;letter-spacing:-.04em}
.hero-course{font-size:1.32rem;font-weight:700;color:var(--course);margin:0 0 18px}
.hero-text{max-width:660px;font-size:1.05rem;color:#52636A;margin:0;line-height:1.7}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.hero-actions button{min-width:128px}
.hero-technical{position:relative;z-index:1;display:grid;place-items:center;color:var(--course);background:linear-gradient(145deg,#F3F8F5,#E4EFE9);border-left:1px solid var(--course-line);min-height:360px}
.hero-technical::after{content:"MECHATRONICS";position:absolute;right:-52px;bottom:52px;transform:rotate(-90deg);font-size:.67rem;letter-spacing:.34em;font-weight:800;color:rgba(47,105,87,.42)}
.hero-technical svg{width:min(86%,360px);opacity:.86}
.home-intro{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:end;margin:44px 2px 20px}
.home-intro h2,.section-heading h2{font-size:1.8rem;margin:5px 0 0;letter-spacing:-.025em}
.home-intro p{margin:0;color:var(--course-muted);max-width:520px;justify-self:end}
.portal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.portal-card{display:flex;flex-direction:column;min-height:275px;background:#fff;border:1px solid #D9E0DC;border-radius:16px;padding:22px;box-shadow:0 8px 22px rgba(23,37,43,.035);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.portal-card:hover{transform:translateY(-2px);border-color:#BFD2C9;box-shadow:0 12px 26px rgba(23,37,43,.06)}
.portal-card-private{background:linear-gradient(145deg,#F9FBFA,#EEF5F1);border-color:var(--course-line)}
.portal-icon{width:42px;height:42px;display:grid;place-items:center;background:var(--course-soft);border-radius:10px;color:var(--course);margin-bottom:22px}
.portal-icon svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.portal-card h3{font-size:1.25rem;margin:5px 0 8px}
.portal-card p{color:var(--course-muted);margin:0 0 22px;font-size:.94rem;line-height:1.6}
.portal-card button{margin-top:auto;align-self:flex-start;border-radius:8px;font-size:.9rem}
.content-section{padding-top:6px}
.section-heading{margin:4px 0 24px;padding-bottom:18px;border-bottom:1px solid #D8E0DC}
.section-heading h2{font-size:2rem}
.section-heading p{margin:5px 0 0;color:var(--course-muted)}
.course-10e .card{border-radius:14px;border-color:#D8E0DC;box-shadow:none;padding:20px}
.course-10e .card:hover{border-color:#BBCFC6}
.course-10e .card h3{font-size:1.08rem}
.course-10e .card .meta{font-size:.82rem;letter-spacing:.01em}
.course-10e .btn,.course-10e button{border-radius:8px}
.course-10e button.primary,.course-10e .btn.primary{background:var(--course);border-color:var(--course)}
.course-10e button.primary:hover,.course-10e .btn.primary:hover{background:var(--course-deep);border-color:var(--course-deep)}
.student-login{max-width:540px;margin:30px auto;padding:30px;border-radius:18px;border-color:#D5DFDA;box-shadow:0 12px 34px rgba(23,37,43,.045)}
.student-login h2{font-size:1.7rem;margin:5px 0 6px}
.student-login>p{color:var(--course-muted);margin:0 0 20px}
.student-login input{padding:12px 13px;border-radius:8px}
.private-area{background:#fff;border:1px solid #D8E0DC;border-radius:18px;padding:26px}
.private-head{padding-bottom:18px;border-bottom:1px solid #E2E7E4;margin-bottom:26px}
.private-head h2{margin:6px 0 0}
.private-subtitle{color:var(--course-muted);margin:2px 0 0}
.private-section-title{margin:28px 0 14px}
.private-section-title h3{margin:4px 0 0;font-size:1.28rem}
.course-footer{max-width:1240px;margin:0 auto;border-top:1px solid #D6DEDA;padding:26px 24px 34px;display:flex;justify-content:space-between;gap:18px;align-items:center;text-align:left}
.course-footer div{display:flex;flex-direction:column;gap:2px}.course-footer strong{color:#33474F}.course-footer span,.course-footer p{font-size:.84rem;color:#7B8A8F;margin:0}
@media(max-width:1050px){.portal-grid{grid-template-columns:repeat(2,1fr)}.course-hero{grid-template-columns:1fr 320px}.hero-copy{padding:40px}.course-nav{width:100%;overflow:auto;flex-wrap:nowrap;padding-bottom:2px}.course-nav button{white-space:nowrap}}
@media(max-width:760px){.course-topbar{padding:13px 16px}.course-main{padding:0 15px 40px;margin-top:18px}.brand-mark{width:42px;height:42px}.course-hero{grid-template-columns:1fr}.hero-copy{padding:34px 26px}.hero-technical{display:none}.home-intro{grid-template-columns:1fr;gap:8px;margin-top:32px}.home-intro p{justify-self:start}.portal-grid{grid-template-columns:1fr}.portal-card{min-height:auto}.course-footer{flex-direction:column;align-items:flex-start;padding:22px 16px 30px}.course-hero h2{font-size:2.4rem}.section-heading h2{font-size:1.7rem}}