/* ============================================================
   OSGLI Landing v2 — Cockpit Identity
   Inspired by toeic.osee.co.id (navy + teal + amber, mono dial,
   part strip, dot-grid bg). Adapted for multi-exam platform:
   TOEFL ITP / TOEFL iBT / TOEIC — with live timer, dual-ring dial,
   and test-mode picker ring as signature elements.
   ============================================================ */

:root {
    --os-ink: #152033;
    --os-ink-soft: #334155;
    --os-muted: #64748B;
    --os-line: #D8E0EA;
    --os-canvas: #F4F7F5;
    --os-navy: #1C3557;
    --os-navy-2: #244D78;
    --os-teal: #0A7C71;
    --os-teal-2: #08695F;
    --os-teal-soft: #D9F1EC;
    --os-amber: #F2A51F;
    --os-amber-2: #C98310;
    --os-amber-soft: #FFF1CD;
    --os-blue: #2563EB;
    --os-blue-soft: #EFF6FF;
    --os-red: #DC2626;
    --os-red-soft: #FEF2F2;

    --os-radius: 18px;
    --os-radius-lg: 28px;
    --os-radius-sm: 10px;
    --os-shadow: 0 22px 60px rgba(21, 32, 51, 0.11);
    --os-shadow-soft: 0 10px 28px rgba(21, 32, 51, 0.08);
    --os-shadow-card: 0 2px 12px rgba(21, 32, 51, 0.06);
    --os-shadow-card-hover: 0 12px 32px rgba(21, 32, 51, 0.12);

    --os-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --os-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Consolas, monospace;
}

/* ---------- Global Resets ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    color: var(--os-ink);
    font-family: var(--os-font);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    background:
        linear-gradient(90deg, rgba(21, 32, 51, 0.045) 1px, transparent 1px),
        linear-gradient(180deg, rgba(21, 32, 51, 0.035) 1px, transparent 1px),
        radial-gradient(circle at 8% 6%, rgba(10, 124, 113, 0.16), transparent 32rem),
        radial-gradient(circle at 92% 4%, rgba(242, 165, 31, 0.14), transparent 30rem),
        var(--os-canvas);
    background-size: 40px 40px, 40px 40px, auto, auto, auto;
}

/* ---------- Container ---------- */
.os-shell {
    width: min(1160px, calc(100vw - 32px));
    margin: 0 auto;
}

/* ---------- Navbar — clean + sticky + glass ---------- */
.os-navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-bottom: 1px solid rgba(216, 224, 234, 0.7);
}

.os-navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 64px;
    padding: 0.6rem 0;
}

.os-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--os-ink);
    font-size: 1.15rem;
    font-weight: 800;
    text-decoration: none;
    letter-spacing: -0.01em;
}

.os-brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--os-navy), var(--os-teal));
    display: grid;
    place-items: center;
    color: #FFFFFF;
    font-weight: 900;
    box-shadow: 0 6px 18px rgba(10, 124, 113, 0.3);
}

.os-nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.os-nav-link {
    padding: 0.5rem 0.85rem;
    color: var(--os-ink-soft);
    font-weight: 600;
    font-size: 0.92rem;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.18s ease;
}

.os-nav-link:hover,
.os-nav-link.active {
    color: var(--os-teal);
    background: var(--os-teal-soft);
}

.os-nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.2rem;
    background: var(--os-teal);
    color: #FFFFFF;
    border-radius: 999px;
    font-weight: 800;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.18s ease;
    box-shadow: 0 8px 20px rgba(10, 124, 113, 0.3);
}

.os-nav-cta:hover {
    background: var(--os-teal-2);
    color: #FFFFFF;
    transform: translateY(-1px);
}

.os-nav-toggler {
    display: none;
    background: transparent;
    border: 1px solid var(--os-line);
    border-radius: 10px;
    padding: 0.4rem 0.55rem;
    color: var(--os-ink);
    cursor: pointer;
    font-size: 1rem;
}

/* ---------- Eyebrow ---------- */
.os-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.5rem 0.9rem;
    color: var(--os-teal);
    border: 1px solid rgba(10, 124, 113, 0.2);
    border-radius: 999px;
    background: rgba(217, 241, 236, 0.6);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.os-eyebrow::before {
    content: "";
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--os-amber);
    box-shadow: 0 0 0 4px rgba(242, 165, 31, 0.18);
    animation: osPulse 2.4s ease-in-out infinite;
}

@keyframes osPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%      { opacity: 0.65; transform: scale(0.85); }
}

/* ============================================================
   HERO — split layout with live timer cockpit
   ============================================================ */
.os-hero {
    min-height: 720px;
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 4rem);
    padding: clamp(3rem, 6vw, 5rem) 0 4rem;
}

.os-hero-copy { max-width: 640px; }

.os-hero-title {
    margin: 0;
    color: var(--os-ink);
    font-size: clamp(2.6rem, 5.6vw, 4.4rem);
    font-weight: 800;
    line-height: 1.02;
    letter-spacing: -0.025em;
}

.os-hero-title span {
    background: linear-gradient(135deg, var(--os-teal), var(--os-amber));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.os-hero-lead {
    max-width: 540px;
    margin: 1.4rem 0 0;
    color: var(--os-ink-soft);
    font-size: clamp(1rem, 1.6vw, 1.18rem);
    line-height: 1.6;
    font-weight: 500;
}

.os-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.os-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 3.2rem;
    padding: 0 1.5rem;
    color: #FFFFFF;
    background: var(--os-teal);
    border-radius: 999px;
    font-weight: 800;
    font-size: 0.98rem;
    text-decoration: none;
    box-shadow: 0 14px 32px rgba(10, 124, 113, 0.28);
    transition: all 0.18s ease;
}

.os-btn-primary:hover {
    background: var(--os-teal-2);
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 18px 38px rgba(10, 124, 113, 0.35);
}

.os-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 3.2rem;
    padding: 0 1.5rem;
    color: var(--os-ink);
    background: #FFFFFF;
    border: 1px solid var(--os-line);
    border-radius: 999px;
    font-weight: 800;
    font-size: 0.98rem;
    text-decoration: none;
    transition: all 0.18s ease;
}

.os-btn-secondary:hover {
    border-color: var(--os-teal);
    color: var(--os-teal);
    transform: translateY(-2px);
    box-shadow: var(--os-shadow-soft);
}

.os-hero-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.6rem;
}

.os-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.85rem;
    color: var(--os-ink-soft);
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--os-line);
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
}

.os-chip i { color: var(--os-teal); font-size: 0.78rem; }

/* ---------- Hero Cockpit Panel ---------- */
.os-cockpit {
    border: 1px solid rgba(216, 224, 234, 0.9);
    border-radius: var(--os-radius-lg);
    background: rgba(255, 255, 255, 0.85);
    box-shadow: var(--os-shadow);
    overflow: hidden;
    backdrop-filter: blur(12px);
}

.os-cockpit-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.1rem 1.4rem;
    color: #FFFFFF;
    background: linear-gradient(135deg, var(--os-navy), var(--os-navy-2));
}

.os-cockpit-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.os-cockpit-title {
    margin-top: 0.25rem;
    font-size: 1.08rem;
    font-weight: 800;
    letter-spacing: -0.01em;
}

.os-cockpit-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    color: var(--os-teal);
    background: var(--os-teal-soft);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 800;
    white-space: nowrap;
}

.os-cockpit-tag.amber { color: #865700; background: var(--os-amber-soft); }
.os-cockpit-tag.blue  { color: var(--os-blue); background: var(--os-blue-soft); }

.os-cockpit-body {
    padding: 1.6rem;
}

/* Live timer block */
.os-timer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1.1rem;
    margin-bottom: 1.4rem;
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.06), rgba(220, 38, 38, 0.02));
    border: 1px solid rgba(220, 38, 38, 0.18);
    border-radius: var(--os-radius-sm);
}

.os-timer-live {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--os-red);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.os-timer-live::before {
    content: "";
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--os-red);
    box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.22);
    animation: osPulse 1.4s ease-in-out infinite;
}

.os-timer-clock {
    font-family: var(--os-mono);
    color: var(--os-ink);
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
}

.os-timer-meta {
    color: var(--os-muted);
    font-size: 0.78rem;
    font-weight: 600;
}

/* Dual-ring dial (Listening + Reading) */
.os-dial-row {
    display: grid;
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 1.4rem;
    align-items: center;
}

.os-dial {
    position: relative;
    width: 168px;
    height: 168px;
}

.os-dial-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    box-shadow: inset 0 0 0 1px rgba(216, 224, 234, 0.85);
}

.os-dial-ring.outer {
    background:
        radial-gradient(circle at center, #FFFFFF 0 56%, transparent 57%),
        conic-gradient(var(--os-teal) 0 42%, var(--os-amber) 42% 78%, #DCE5EE 78% 100%);
}

.os-dial-ring.inner {
    inset: 16px;
    background:
        radial-gradient(circle at center, #FFFFFF 0 60%, transparent 61%),
        conic-gradient(var(--os-blue) 0 38%, #DCE5EE 38% 100%);
}

.os-dial-center {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    text-align: center;
}

.os-dial-score {
    color: var(--os-ink);
    font-family: var(--os-mono);
    font-size: 1.95rem;
    font-weight: 700;
    line-height: 1;
}

.os-dial-score small {
    display: block;
    margin-top: 0.3rem;
    color: var(--os-muted);
    font-family: var(--os-font);
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.os-dial-stack {
    display: grid;
    gap: 0.55rem;
}

.os-dial-stat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.65rem 0.85rem;
    background: #FFFFFF;
    border: 1px solid var(--os-line);
    border-radius: var(--os-radius-sm);
}

.os-dial-stat-label {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--os-ink);
    font-size: 0.84rem;
    font-weight: 800;
}

.os-dial-stat-label i { color: var(--os-teal); font-size: 0.75rem; }
.os-dial-stat.amber .os-dial-stat-label i { color: var(--os-amber); }
.os-dial-stat.blue  .os-dial-stat-label i { color: var(--os-blue); }

.os-dial-stat-value {
    font-family: var(--os-mono);
    color: var(--os-ink);
    font-weight: 700;
}

.os-dial-bar {
    height: 0.45rem;
    margin-top: 0.45rem;
    border-radius: 999px;
    background: #EDF2F7;
    overflow: hidden;
}

.os-dial-bar > span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: var(--os-teal);
}

.os-dial-stat.amber .os-dial-bar > span { background: var(--os-amber); }
.os-dial-stat.blue  .os-dial-bar > span { background: var(--os-blue); }

/* Section navigator strip (test parts) */
.os-parts {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 0.4rem;
    padding: 1.3rem 1.6rem 1.6rem;
    border-top: 1px solid rgba(216, 224, 234, 0.6);
}

.os-part {
    min-height: 3.4rem;
    display: grid;
    place-items: center;
    gap: 0.15rem;
    padding: 0.45rem 0.3rem;
    color: var(--os-ink);
    border: 1px solid var(--os-line);
    border-radius: 0.7rem;
    background: #FFFFFF;
    text-align: center;
    transition: all 0.18s ease;
}

.os-part strong {
    font-family: var(--os-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--os-ink);
}

.os-part span {
    color: var(--os-muted);
    font-size: 0.62rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.os-part.active {
    border-color: rgba(10, 124, 113, 0.4);
    background: var(--os-teal-soft);
}

.os-part.active strong { color: var(--os-teal); }

.os-part.answered {
    background: var(--os-teal);
    border-color: var(--os-teal);
}

.os-part.answered strong,
.os-part.answered span { color: #FFFFFF; }

/* ============================================================
   TEST MODE PICKER (signature element — ring chooser)
   ============================================================ */
.os-mode-section { padding: clamp(2rem, 5vw, 3.5rem) 0 1rem; }

.os-mode-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.os-mode-card {
    position: relative;
    padding: 1.4rem;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid var(--os-line);
    border-radius: var(--os-radius);
    text-align: center;
    text-decoration: none;
    color: var(--os-ink);
    transition: all 0.22s ease;
    overflow: hidden;
}

.os-mode-card::before {
    content: "";
    position: absolute;
    top: -40%;
    right: -40%;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: conic-gradient(from 90deg, transparent 0 280deg, rgba(10, 124, 113, 0.08) 280deg 360deg);
    transition: transform 0.4s ease;
}

.os-mode-card:hover {
    transform: translateY(-4px);
    border-color: rgba(10, 124, 113, 0.4);
    box-shadow: var(--os-shadow-card-hover);
}

.os-mode-card:hover::before { transform: rotate(45deg) scale(1.15); }

.os-mode-icon {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    margin: 0 auto 0.85rem;
    border-radius: 50%;
    background: var(--os-teal-soft);
    color: var(--os-teal);
    font-size: 1.3rem;
    position: relative;
}

.os-mode-icon.amber { background: var(--os-amber-soft); color: #865700; }
.os-mode-icon.blue  { background: var(--os-blue-soft);  color: var(--os-blue); }

.os-mode-icon::after {
    content: "";
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1.5px dashed rgba(10, 124, 113, 0.3);
    animation: osSpin 12s linear infinite;
}

@keyframes osSpin { to { transform: rotate(360deg); } }

.os-mode-name {
    font-size: 1.02rem;
    font-weight: 800;
    color: var(--os-ink);
    margin-bottom: 0.2rem;
}

.os-mode-sub {
    color: var(--os-muted);
    font-size: 0.82rem;
    font-weight: 600;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.os-section { padding: clamp(3.5rem, 7vw, 5.5rem) 0; }

.os-section-head {
    text-align: center;
    margin-bottom: 2.5rem;
}

.os-section-title {
    margin: 0.5rem 0 0.75rem;
    font-size: clamp(1.7rem, 3.6vw, 2.4rem);
    font-weight: 800;
    color: var(--os-ink);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.os-section-subtitle {
    margin: 0 auto;
    max-width: 620px;
    color: var(--os-ink-soft);
    font-size: 1rem;
    line-height: 1.6;
}

/* ============================================================
   PRICING — 3 test cards + 1 platform card
   ============================================================ */
.os-pricing-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 1.5rem;
    align-items: stretch;
}

.os-pricing-tests {
    display: grid;
    gap: 0.85rem;
}

.os-test-card {
    padding: 1.4rem 1.5rem;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--os-line);
    border-radius: var(--os-radius);
    box-shadow: var(--os-shadow-card);
    transition: all 0.22s ease;
    position: relative;
    overflow: hidden;
}

.os-test-card::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--os-teal);
}

.os-test-card.ibt::after    { background: var(--os-blue); }
.os-test-card.toeic::after  { background: var(--os-amber); }

.os-test-card:hover {
    transform: translateX(4px);
    box-shadow: var(--os-shadow-card-hover);
}

.os-test-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.6rem;
}

.os-test-name {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--os-ink);
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.os-test-name i {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    font-size: 0.85rem;
    background: var(--os-teal-soft);
    color: var(--os-teal);
}

.os-test-card.ibt .os-test-name i    { background: var(--os-blue-soft);  color: var(--os-blue); }
.os-test-card.toeic .os-test-name i  { background: var(--os-amber-soft); color: #865700; }

.os-test-price {
    font-family: var(--os-mono);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--os-ink);
    white-space: nowrap;
}

.os-test-detail {
    color: var(--os-ink-soft);
    font-size: 0.9rem;
    font-weight: 500;
    margin: 0;
}

/* Platform fee card */
.os-platform-card {
    padding: 1.6rem;
    background: linear-gradient(160deg, var(--os-navy), var(--os-teal));
    border-radius: var(--os-radius);
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.os-platform-card::before {
    content: "";
    position: absolute;
    bottom: -40%;
    left: -30%;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(242, 165, 31, 0.35), transparent 65%);
    pointer-events: none;
}

.os-platform-eyebrow {
    color: var(--os-amber);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.os-platform-price {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    margin-bottom: 0.5rem;
    position: relative;
}

.os-platform-currency {
    font-size: 1.05rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.7);
}

.os-platform-amount {
    font-family: var(--os-mono);
    font-size: 2.6rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1;
}

.os-platform-suffix {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    font-weight: 700;
}

.os-platform-note {
    margin: 0 0 1.2rem;
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.88rem;
    font-weight: 500;
}

.os-platform-features {
    list-style: none;
    margin: 0 0 1.5rem;
    padding: 0;
    display: grid;
    gap: 0.55rem;
    flex: 1;
}

.os-platform-features li {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.88rem;
    font-weight: 600;
}

.os-platform-features i { color: var(--os-amber); font-size: 0.85rem; }

.os-platform-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.95rem 1.2rem;
    background: var(--os-amber);
    color: var(--os-ink);
    border-radius: 999px;
    font-weight: 800;
    font-size: 0.98rem;
    text-decoration: none;
    box-shadow: 0 12px 28px rgba(242, 165, 31, 0.4);
    transition: all 0.18s ease;
    position: relative;
}

.os-platform-cta:hover {
    background: #E09415;
    color: var(--os-ink);
    transform: translateY(-2px);
}

/* ============================================================
   FEATURES — 4-col grid with numbered badges
   ============================================================ */
.os-features-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.os-feature-card {
    position: relative;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--os-line);
    border-radius: var(--os-radius);
    box-shadow: var(--os-shadow-card);
    transition: all 0.22s ease;
}

.os-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--os-shadow-card-hover);
    border-color: rgba(10, 124, 113, 0.3);
}

.os-feature-num {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    color: var(--os-line);
    font-family: var(--os-mono);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.os-feature-icon {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    margin-bottom: 1rem;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--os-teal), var(--os-teal-2));
    color: #FFFFFF;
    font-size: 1.1rem;
    box-shadow: 0 8px 18px rgba(10, 124, 113, 0.25);
}

.os-feature-card:nth-child(2) .os-feature-icon { background: linear-gradient(135deg, var(--os-blue), #1D4ED8); box-shadow: 0 8px 18px rgba(37, 99, 235, 0.25); }
.os-feature-card:nth-child(3) .os-feature-icon { background: linear-gradient(135deg, var(--os-amber), var(--os-amber-2)); box-shadow: 0 8px 18px rgba(242, 165, 31, 0.3); }
.os-feature-card:nth-child(4) .os-feature-icon { background: linear-gradient(135deg, var(--os-red), #B91C1C); box-shadow: 0 8px 18px rgba(220, 38, 38, 0.25); }

.os-feature-title {
    margin: 0 0 0.45rem;
    font-size: 1.02rem;
    font-weight: 800;
    color: var(--os-ink);
    letter-spacing: -0.01em;
}

.os-feature-desc {
    margin: 0;
    color: var(--os-ink-soft);
    font-size: 0.88rem;
    line-height: 1.55;
}

/* ============================================================
   SCORE JOURNEY — steps with conic connectors
   ============================================================ */
.os-journey {
    position: relative;
    background: rgba(255, 255, 255, 0.55);
    border-radius: var(--os-radius-lg);
    padding: clamp(1.5rem, 3vw, 2.5rem);
    border: 1px solid var(--os-line);
    box-shadow: var(--os-shadow-soft);
}

.os-steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.75rem;
    position: relative;
}

.os-step {
    position: relative;
    padding: 1.4rem 1.2rem;
    text-align: center;
    background: #FFFFFF;
    border: 1px solid var(--os-line);
    border-radius: var(--os-radius);
}

.os-step-num {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    margin: 0 auto 0.75rem;
    border-radius: 50%;
    background: var(--os-ink);
    color: #FFFFFF;
    font-family: var(--os-mono);
    font-weight: 700;
    font-size: 0.95rem;
    position: relative;
    z-index: 2;
}

.os-step-icon {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    margin: 0 auto 0.6rem;
    border-radius: 10px;
    background: var(--os-teal-soft);
    color: var(--os-teal);
    font-size: 0.95rem;
}

.os-step-title {
    margin: 0 0 0.3rem;
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--os-ink);
}

.os-step-desc {
    margin: 0;
    color: var(--os-muted);
    font-size: 0.82rem;
    line-height: 1.5;
}

/* Connector lines between steps */
.os-steps::before {
    content: "";
    position: absolute;
    top: 28px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--os-line) 0 6px, transparent 6px 12px);
    z-index: 1;
}

/* ============================================================
   TESTIMONIALS — single-row marquee, unique quotes
   ============================================================ */
.os-testimonials-wrap {
    overflow: hidden;
    mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.os-testimonials-track {
    display: flex;
    gap: 1rem;
    width: max-content;
    animation: osMarquee 60s linear infinite;
}

.os-testimonials-track:hover { animation-play-state: paused; }

@keyframes osMarquee {
    to { transform: translateX(-50%); }
}

.os-quote {
    width: 360px;
    flex-shrink: 0;
    padding: 1.4rem;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--os-line);
    border-radius: var(--os-radius);
    box-shadow: var(--os-shadow-card);
}

.os-quote-mark {
    color: var(--os-teal);
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.os-quote-text {
    margin: 0 0 1rem;
    color: var(--os-ink-soft);
    font-size: 0.92rem;
    line-height: 1.55;
    font-style: italic;
}

.os-quote-author {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.os-quote-avatar {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--os-teal), var(--os-blue));
    color: #FFFFFF;
    font-weight: 800;
    font-size: 0.78rem;
    flex-shrink: 0;
}

.os-quote-meta strong {
    display: block;
    color: var(--os-ink);
    font-size: 0.85rem;
    font-weight: 800;
}

.os-quote-meta span {
    color: var(--os-muted);
    font-size: 0.74rem;
    font-weight: 600;
}

/* ============================================================
   FAQ
   ============================================================ */
.os-faq-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 1.5rem;
    align-items: start;
}

.os-faq-list {
    display: grid;
    gap: 0.65rem;
}

.os-faq-item {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--os-line);
    border-radius: var(--os-radius-sm);
    overflow: hidden;
    transition: all 0.18s ease;
}

.os-faq-item.open {
    border-color: rgba(10, 124, 113, 0.4);
    box-shadow: var(--os-shadow-card);
}

.os-faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.2rem;
    background: transparent;
    border: 0;
    color: var(--os-ink);
    font-weight: 700;
    font-size: 0.95rem;
    text-align: left;
    cursor: pointer;
    transition: all 0.18s ease;
}

.os-faq-q:hover { color: var(--os-teal); }

.os-faq-icon {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--os-teal-soft);
    color: var(--os-teal);
    font-size: 0.78rem;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.os-faq-item.open .os-faq-icon { transform: rotate(45deg); }

.os-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    color: var(--os-ink-soft);
    font-size: 0.9rem;
    line-height: 1.6;
    padding: 0 1.2rem;
}

.os-faq-item.open .os-faq-a {
    max-height: 320px;
    padding: 0 1.2rem 1.1rem;
}

.os-faq-side {
    position: sticky;
    top: 100px;
    padding: 1.6rem;
    background: linear-gradient(160deg, var(--os-navy), var(--os-teal));
    color: #FFFFFF;
    border-radius: var(--os-radius);
    box-shadow: var(--os-shadow);
    position: relative;
    overflow: hidden;
}

.os-faq-side::before {
    content: "";
    position: absolute;
    top: -40%;
    right: -30%;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(242, 165, 31, 0.25), transparent 70%);
}

.os-faq-side h3 {
    position: relative;
    margin: 0 0 0.5rem;
    font-size: 1.15rem;
    font-weight: 800;
}

.os-faq-side p {
    position: relative;
    margin: 0 0 1rem;
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.88rem;
}

.os-faq-side a {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--os-amber);
    font-weight: 800;
    text-decoration: none;
}

/* ============================================================
   FINAL CTA
   ============================================================ */
.os-cta-box {
    padding: clamp(2rem, 4vw, 3rem);
    background: linear-gradient(135deg, var(--os-navy) 0%, var(--os-teal) 100%);
    border-radius: var(--os-radius-lg);
    color: #FFFFFF;
    text-align: center;
    box-shadow: var(--os-shadow);
    position: relative;
    overflow: hidden;
}

.os-cta-box::before {
    content: "";
    position: absolute;
    top: -30%;
    right: -10%;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(242, 165, 31, 0.22), transparent 70%);
}

.os-cta-box::after {
    content: "";
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.18), transparent 70%);
}

.os-cta-eyebrow {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.9rem;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.os-cta-title {
    position: relative;
    margin: 0 0 0.6rem;
    font-size: clamp(1.6rem, 3.5vw, 2.3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.os-cta-desc {
    position: relative;
    margin: 0 auto 1.5rem;
    max-width: 560px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.98rem;
    line-height: 1.55;
}

.os-cta-actions {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.os-cta-amber {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    background: var(--os-amber);
    color: var(--os-ink);
    border-radius: 999px;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 12px 28px rgba(242, 165, 31, 0.4);
    transition: all 0.18s ease;
}

.os-cta-amber:hover {
    background: #E09415;
    color: var(--os-ink);
    transform: translateY(-2px);
}

.os-cta-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;
    font-weight: 800;
    text-decoration: none;
    transition: all 0.18s ease;
}

.os-cta-ghost:hover {
    background: rgba(255, 255, 255, 0.18);
    color: #FFFFFF;
}

/* ============================================================
   FOOTER — minimal, dark
   ============================================================ */
.os-footer {
    background: #0F172A;
    color: rgba(255, 255, 255, 0.7);
    padding: 3rem 0 1.5rem;
}

.os-footer h5 {
    color: #FFFFFF;
    font-size: 0.95rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

.os-footer a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    font-size: 0.88rem;
    transition: color 0.18s ease;
}

.os-footer a:hover { color: var(--os-amber); }

.os-footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.45rem;
}

.os-footer-bottom {
    margin-top: 2rem;
    padding-top: 1.3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.78rem;
    text-align: center;
    line-height: 1.6;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 991.98px) {
    .os-hero {
        grid-template-columns: 1fr;
        min-height: auto;
        padding-top: 2.5rem;
    }

    .os-pricing-layout {
        grid-template-columns: 1fr;
    }

    .os-features-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .os-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .os-steps::before { display: none; }

    .os-faq-grid {
        grid-template-columns: 1fr;
    }

    .os-faq-side { position: static; }

    .os-mode-grid {
        grid-template-columns: 1fr;
    }

    .os-nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0.25rem;
        padding: 1rem;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--os-line);
    }

    .os-nav-links.open { display: flex; }

    .os-nav-toggler { display: inline-flex; }

    .os-dial-row {
        grid-template-columns: 130px minmax(0, 1fr);
        gap: 1rem;
    }

    .os-dial { width: 130px; height: 130px; }
    .os-dial-score { font-size: 1.55rem; }

    .os-parts { grid-template-columns: repeat(7, minmax(0, 1fr)); padding: 1rem 1rem 1.2rem; }
    .os-part strong { font-size: 0.82rem; }
    .os-part span { font-size: 0.56rem; }
}

@media (max-width: 575.98px) {
    .os-features-grid {
        grid-template-columns: 1fr;
    }

    .os-steps {
        grid-template-columns: 1fr;
    }

    .os-platform-amount { font-size: 2.1rem; }
}