:root {
    font-family: 'Hind Siliguri', system-ui, sans-serif;
    color: #143a1c;
    background: #f5f8fc;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
}

a {
    color: inherit;
    text-decoration: none;
}

.shell {
    max-width: 1160px;
    margin: auto;
    padding: 0 22px;
}

/* =========================
   HEADER
========================= */

.site-header {
    background: #fff;
    border-bottom: 1px solid #e4ebf4;
}

.header-inner {
    min-height: 82px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 13px;
    font-size: 23px;
    font-weight: 800;
    color: #173668;
}

.brand img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.brand small {
    display: block;
    font-size: 11px;
    line-height: 1.3;
    color: #667991;
    font-weight: 600;
}

/* =========================
   NAVIGATION
========================= */

.main-nav {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.main-nav a {
    padding: 10px 15px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 700;
}

.main-nav a:hover,
.main-nav a[aria-current=page] {
    background: #eaf1ff;
    color: #245ac6;
}

.main-nav .nav-admin {
    border: 1px solid #cfdbef;
}

/* =========================
   EYEBROW TEXT
========================= */

.eyebrow {
    color: #2c67d8;
    font-weight: 800;
    font-size: 13px;
    letter-spacing: .08em;
    text-transform: uppercase;
}

/* =========================
   HERO SECTION
========================= */

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(310px, .88fr);
    gap: 44px;
    align-items: center;
    padding: 68px 0 56px;
}

.hero h1 {
    font-size: clamp(36px, 4vw, 60px);
    line-height: 1.15;
    letter-spacing: -.035em;
    margin: 16px 0 17px;
    color: #132e61;
}

.hero p {
    font-size: 17px;
    line-height: 1.85;
    color: #566982;
    max-width: 590px;
    margin: 0 0 27px;
}

/* =========================
   BUTTONS
========================= */

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 19px;
    border-radius: 11px;
    font-size: 15px;
    font-weight: 800;
    min-height: 48px;
}

.button-primary {
    background: #255bd1;
    color: white;
    box-shadow: 0 9px 20px rgba(37, 91, 209, .2);
}

.button-primary:hover {
    background: #164bb9;
}

.button-secondary {
    background: #fff;
    border: 1px solid #cfdbeb;
    color: #24416b;
}

.button-secondary:hover {
    background: #edf3fb;
}

/* =========================
   HERO RIGHT PANEL
========================= */

.hero-panel {
    background: linear-gradient(150deg, #1c3978, #2461d9);
    border-radius: 28px;
    padding: 31px;
    min-height: 345px;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: 0 24px 50px rgba(25, 65, 145, .2);
}

.hero-panel:before {
    content: '';
    position: absolute;
    width: 310px;
    height: 310px;
    border: 1px solid #ffffff35;
    border-radius: 50%;
    right: -125px;
    top: -130px;
    box-shadow:
        0 0 0 45px #ffffff0e,
        0 0 0 100px #ffffff09;
}

.hero-panel > * {
    position: relative;
}

.hero-panel .mark {
    width: 54px;
    height: 54px;
    border-radius: 15px;
    background: #ffffff25;
    display: grid;
    place-items: center;
    font-size: 27px;
}

.hero-panel h2 {
    font-size: 29px;
    line-height: 1.35;
    max-width: 320px;
    margin: 55px 0 10px;
}

.hero-panel p {
    color: #e3edff;
    font-size: 15px;
    line-height: 1.7;
    margin: 0;
}

.panel-chips {
    display: flex;
    gap: 9px;
    flex-wrap: wrap;
    margin-top: 26px;
}

.panel-chips span {
    padding: 7px 11px;
    background: #ffffff24;
    border: 1px solid #ffffff26;
    border-radius: 100px;
    font-size: 12px;
}

/* =========================
   GENERAL SECTION
========================= */

.section {
    padding: 25px 0 56px;
}

.section-head {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 20px;
    margin-bottom: 20px;
}

.section-head h2 {
    font-size: 27px;
    margin: 5px 0;
    color: #152f61;
}

.section-head p {
    margin: 0;
    color: #64758c;
}

/* =========================
   NOTICE BOARD
========================= */

.notice-zone .public-notice-wrapper {
    max-width: none;
    margin: 0;
    background: white;
    border: 1px solid #e0e8f3;
    box-shadow: 0 9px 28px #183a6b0a;
    border-radius: 18px;
}

.notice-zone .public-notice-header {
    background: #fff;
    color: #173668;
    border-bottom: 1px solid #e7edf5;
    padding: 18px 23px;
    font-size: 18px;
}

.notice-zone .public-notice-card {
    padding: 17px 23px;
}

.notice-zone .public-notice-title {
    color: #193b76;
    margin-bottom: 3px;
}

.notice-zone .public-notice-body {
    line-height: 1.65;
}

.notice-empty {
    background: #fff;
    border: 1px solid #e2eaf5;
    border-radius: 16px;
    padding: 23px;
    color: #617187;
}

/* =========================
   INTRODUCTION
========================= */

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 20px;
}

.surface {
    background: #fff;
    border: 1px solid #e2eaf5;
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 8px 30px #183a6b08;
}

.surface h3 {
    margin: 0 0 13px;
    font-size: 20px;
    color: #173668;
}

.surface p {
    color: #617187;
    line-height: 1.65;
}

/* =========================
   CONTACTS
========================= */

.contacts {
    display: grid;
    gap: 8px;
}

.contacts a {
    color: #2557ad;
    font-weight: 700;
}

/* =========================
   TEACHERS
========================= */

.teachers {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.teacher {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 10px 12px;
    background: #f5f8fd;
    border-radius: 12px;
    min-width: 185px;
    flex: 1;
}

.teacher img {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
}

.teacher strong {
    display: block;
    font-size: 13px;
}

.teacher small {
    color: #718099;
    font-size: 11px;
}

/* =========================
   PAGE TITLE
========================= */

.page-title {
    padding: 50px 0 28px;
}

.page-title h1 {
    font-size: clamp(32px, 4vw, 49px);
    line-height: 1.2;
    margin: 9px 0;
    color: #142f61;
}

.page-title p {
    color: #60728c;
    font-size: 17px;
    margin: 0;
}

/* =========================
   QUICK CARDS
========================= */

.quick-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 17px;
    margin-bottom: 36px;
}

.quick-card {
    display: flex;
    min-height: 175px;
    flex-direction: column;
    justify-content: space-between;
    background: #fff;
    border: 1px solid #e2eaf4;
    border-radius: 18px;
    padding: 22px;
    box-shadow: 0 8px 24px #1e3a6509;
    transition: transform .2s, box-shadow .2s;
}

.quick-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 30px #1e3a651c;
}

.quick-card .icon {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: #eaf1ff;
    color: #245acd;
    font-size: 20px;
}

.quick-card strong {
    font-size: 19px;
    color: #17335f;
    display: block;
}

.quick-card small {
    font-size: 13px;
    color: #61728a;
}

.quick-card .arrow {
    float: right;
    color: #255bd1;
}

/* =========================
   QUOTE
========================= */

.quote {
    border-left: 3px solid #2e63d0;
    padding: 12px 18px;
    background: #ecf3ff;
    border-radius: 0 12px 12px 0;
    color: #284472;
    margin-bottom: 45px;
}

/* =========================
   FOOTER
========================= */

.footer {
    border-top: 1px solid #e1eaf4;
    padding: 22px 0 32px;
    color: #728098;
    font-size: 13px;
}

.footer .shell {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    flex-wrap: wrap;
}

/* ==================================================
   TABLET RESPONSIVE DESIGN
   Screen width 850px or smaller
================================================== */

@media (max-width: 850px) {

    .hero {
        grid-template-columns: 1fr;
        padding: 44px 0;
    }

    .hero-panel {
        min-height: 250px;
    }

    .hero-panel h2 {
        margin: 35px 0 10px;
    }

    .intro-grid {
        grid-template-columns: 1fr;
    }

    .quick-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==================================================
   MOBILE RESPONSIVE DESIGN
   Screen width 580px or smaller
================================================== */

@media (max-width: 580px) {

    .shell {
        padding: 0 17px;
    }

    .header-inner {
        padding: 13px 0;
        align-items: flex-start;
        flex-direction: column;
        gap: 11px;
    }

    .main-nav {
        gap: 3px;
    }

    .main-nav a {
        font-size: 12px;
        padding: 7px 9px;
    }

    .hero h1 {
        font-size: 38px;
    }

    .hero {
        gap: 25px;
    }

    .hero-panel {
        padding: 24px;
    }

    .section {
        padding-bottom: 36px;
    }

    .section-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 5px;
    }

    .quick-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .quick-card {
        min-height: 130px;
    }

    .page-title {
        padding: 38px 0 24px;
    }
}