/* Landing page — split layout (left 2 / right 1) per spec section 7 */
.landing {
    min-height: calc(100vh - 80px);
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    padding: 3rem 2.5rem;
    align-items: stretch;
}

.landing .left {
    color: var(--c-text);
    display: flex; flex-direction: column; justify-content: center;
    padding-right: 1rem;
}
.landing .left h1 {
    font-size: clamp(2rem, 4.5vw, 3.4rem);
    font-weight: 800;
    line-height: 1.1;
    margin: 0 0 1rem 0;
    text-shadow: 0 4px 20px rgba(0,0,0,0.25);
}
.landing .left h1 .accent {
    background: linear-gradient(90deg, var(--c-accent) 0%, #fcd34d 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.landing .left p.lead {
    font-size: 1.2rem; color: var(--c-text-dim);
    margin: 0 0 2rem 0; max-width: 540px;
}
.landing .features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);   /* fixed 2 × 2 layout */
    gap: 1.25rem;
    margin-top: 1.25rem;
    max-width: 720px;                        /* was 580px → ~+24% */
}
.landing .feature {
    background: rgba(9, 52, 66, 0.7);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    padding: 1.55rem;                        /* was 1.25rem → +24% */
    backdrop-filter: blur(8px);
    min-height: 175px;                       /* was 140px → +25% */
}
.landing .feature .icon {
    font-size: 2rem;                         /* was 1.6rem → +25% */
    margin-bottom: 0.5rem;
}
.landing .feature h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;                      /* was 1rem → +25% */
}
.landing .feature p {
    margin: 0;
    font-size: 1.05rem;                      /* was 0.9rem → +17% */
    line-height: 1.45;
    color: var(--c-text-dim);
}

.landing .right {
    display: flex; flex-direction: column; gap: 1rem;
}
.landing .right .panel {
    background: var(--c-form-bg);
    color: var(--c-form-text);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.landing .right .panel h2 {
    margin: 0 0 1.25rem 0; font-size: 1.4rem; color: var(--c-form-text);
}
.landing .tabs {
    display: flex; gap: 0; margin-bottom: 1.5rem;
    border-bottom: 2px solid #e2e8f0;
}
.landing .tabs button {
    flex: 1; padding: 0.7rem 0;
    background: transparent; border: none;
    font-weight: 600; font-size: 0.95rem; cursor: pointer;
    color: #64748b;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}
.landing .tabs button.active {
    color: var(--c-bg-to);
    border-bottom-color: var(--c-bg-to);
}
.landing .tab-pane { display: none; }
.landing .tab-pane.active { display: block; }

@media (max-width: 980px) {
    .landing { grid-template-columns: 1fr; padding: 2rem 1.25rem; }
    .landing .left { padding-right: 0; text-align: center; }
    .landing .features { margin-left: auto; margin-right: auto; }
}
@media (max-width: 640px) {
    .landing .features { grid-template-columns: 1fr; }
    .landing .feature { min-height: auto; }
}