/* ═══════════════════════════════════════════════════════════════
   features.css — Product Features Page Styles
   Extends main.css; all variables defined in main.css are reused.
   ═══════════════════════════════════════════════════════════════ */

/* ─── Page Hero (matches download page dl-hero style) ────────── */
.feat-hero {
    padding: 120px 40px 56px;
    background: linear-gradient(160deg, #f5f4ff 0%, #eef2ff 40%, #f8f9fa 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.feat-hero::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -80px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(99,102,241,0.12) 0%, transparent 70%);
    pointer-events: none;
}

.feat-hero-inner {
    max-width: 820px;
    margin: 0 auto;
    position: relative;
}

/* Small top badge */
.feat-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary-solid);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: 40px;
    padding: 5px 14px;
    font-size: 0.82rem;
    font-weight: 500;
    margin-bottom: 18px;
}

.feat-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.4rem);
    font-weight: 800;
    font-style: italic;
    color: var(--text-dark);
    line-height: 1.15;
    margin-bottom: 18px;
}

.feat-hero-inner > p {
    font-size: 1.05rem;
    color: var(--text-light);
    max-width: 640px;
    margin: 0 auto 28px;
    line-height: 1.7;
}

/* Stats row */
.feat-hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 30px;
}

.feat-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 28px;
}

.feat-stat-num {
    font-family: var(--font-heading);
    font-size: 1.9rem;
    font-weight: 800;
    font-style: italic;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    line-height: 1.1;
}

.feat-stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.feat-stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border-color);
}

/* Feature category quick-jump chips */
.feat-hero-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.feat-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 18px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 40px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-main);
    transition: all 0.2s ease;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.feat-chip:hover {
    border-color: var(--primary-solid);
    color: var(--primary-solid);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79,70,229,0.12);
}

.feat-chip i {
    font-size: 0.9rem;
}

/* ─── Common Section Wrapper ─────────────────────────────────── */
.feat-section {
    padding: 96px 0;
    background: var(--bg-white);
}

.feat-section--gray {
    background: var(--bg-gray);
}

.feat-section-head {
    text-align: center;
    margin-bottom: 56px;
}

.feat-section-head h2 {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 800;
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 14px;
    line-height: 1.2;
}

.feat-section-head p {
    font-size: 1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.feat-label-small {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--primary-solid);
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: 20px;
    padding: 5px 14px;
    margin-bottom: 18px;
}

.feat-cta-center {
    text-align: center;
    margin-top: 40px;
}

/* ─── Section 1: Highlights Grid ────────────────────────────── */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.hl-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    background: var(--bg-white);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.hl-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.08);
}

.hl-card--accent {
    background: linear-gradient(135deg, #f2f2ff 0%, #e9ebff 100%);
    border-color: rgba(99,102,241,0.22);
}

.hl-card--wide {
    grid-column: span 2;
    display: flex;
    align-items: flex-start;
    gap: 24px;
}

.hl-card-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: rgba(99,102,241,0.1);
    color: var(--primary-solid);
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-bottom: 18px;
}

.hl-card--wide .hl-card-icon {
    margin-bottom: 0;
    margin-top: 2px;
}

.hl-card-body {
    flex: 1;
}

.hl-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.hl-card p {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.75;
}

.hl-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.83rem;
    font-weight: 600;
    color: var(--primary-solid);
    margin-top: 14px;
    transition: gap 0.2s ease;
}

.hl-link:hover { gap: 10px; }
.hl-link i { font-size: 0.75rem; }

.hl-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 16px;
}

.hl-tags span {
    font-family: 'Courier New', monospace;
    font-size: 0.75rem;
    background: rgba(99,102,241,0.1);
    color: var(--primary-solid);
    border: 1px solid rgba(99,102,241,0.2);
    padding: 3px 10px;
    border-radius: 4px;
}

/* Stats inside wide highlight card */
.hl-stats-row {
    display: flex;
    gap: 40px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(99,102,241,0.15);
}

.hl-stat-num {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    font-style: italic;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    display: block;
    line-height: 1;
    margin-bottom: 4px;
}

.hl-stat-label {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ─── Section 2: Rule Engine Flow Diagram ───────────────────── */
.rule-engine-flow {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 52px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.ref-node {
    flex: 1;
    min-width: 140px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-top: 3px solid var(--border-color);
    border-radius: 10px;
    padding: 20px 16px;
    text-align: center;
    transition: border-top-color 0.25s ease;
}

.ref-node--highlight {
    border-top-color: var(--primary-solid);
    background: linear-gradient(135deg, #f5f5ff 0%, #edefff 100%);
}

.ref-node-icon {
    width: 36px;
    height: 36px;
    background: rgba(99,102,241,0.1);
    color: var(--primary-solid);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    margin: 0 auto 10px;
}

.ref-node--highlight .ref-node-icon {
    background: rgba(99,102,241,0.18);
}

.ref-node-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.ref-node-desc {
    font-size: 0.76rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.ref-arrow {
    color: var(--border-color);
    font-size: 0.8rem;
    padding: 0 8px;
    flex-shrink: 0;
}

/* Outcomes cluster */
.ref-outcomes {
    flex: 1;
    min-width: 130px;
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.ref-outcome {
    display: flex;
    align-items: center;
    gap: 8px;
    border-radius: 7px;
    padding: 8px 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.ref-outcome i { font-size: 0.75rem; }

.ref-outcome span {
    font-size: 0.72rem;
    font-weight: 400;
    margin-left: auto;
    opacity: 0.65;
}

.ref-outcome--direct  { background: #0d1f0d; border: 1px solid #1e3c1e; color: #4caf50; }
.ref-outcome--proxy   { background: #0d0d22; border: 1px solid #2a2a55; color: #7c6af7; }
.ref-outcome--reject  { background: #1f0d0d; border: 1px solid #3c1e1e; color: #e53935; }

/* Rule Types Grid */
.rule-types-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.rt-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 24px;
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.rt-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0,0,0,0.07);
}

.rt-card--featured {
    grid-column: span 2;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background: linear-gradient(135deg, #f2f2ff, #eaecff);
    border-color: rgba(99,102,241,0.2);
}

.rt-icon {
    width: 44px;
    height: 44px;
    background: rgba(99,102,241,0.1);
    color: var(--primary-solid);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    margin-bottom: 14px;
}

.rt-card--featured .rt-icon { margin-bottom: 0; margin-top: 2px; }
.rt-card--featured .rt-body { flex: 1; }

.rt-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 14px;
}

.rt-types {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.rt-type {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.rt-type code {
    font-family: 'Courier New', monospace;
    font-size: 0.76rem;
    background: rgba(99,102,241,0.1);
    color: var(--primary-solid);
    border: 1px solid rgba(99,102,241,0.18);
    padding: 2px 8px;
    border-radius: 4px;
    white-space: nowrap;
    flex-shrink: 0;
}

.rt-type span {
    font-size: 0.82rem;
    color: var(--text-light);
    line-height: 1.55;
}

.rt-type span em {
    font-style: normal;
    color: var(--primary-solid);
    font-weight: 500;
}

/* ─── Section 3: Protocol Grid ───────────────────────────────── */
.proto-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.proto-card {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 24px;
    background: var(--bg-white);
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.proto-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0,0,0,0.07);
}

.proto-card--highlight {
    grid-column: span 1;
    background: linear-gradient(135deg, #f5f5ff, #edefff);
    border-color: rgba(99,102,241,0.2);
}

.proto-card--new {
    border-color: rgba(34,197,94,0.3);
}

.proto-card-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 12px;
}

.proto-icon {
    width: 40px;
    height: 40px;
    background: rgba(99,102,241,0.1);
    color: var(--primary-solid);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.proto-card--new .proto-icon {
    background: rgba(34,197,94,0.1);
    color: #16a34a;
}

.proto-card-head h3 {
    font-size: 0.97rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.proto-badge {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 2px 8px;
    border-radius: 20px;
    background: rgba(99,102,241,0.1);
    color: var(--primary-solid);
    border: 1px solid rgba(99,102,241,0.2);
}

.proto-badge--new {
    background: rgba(34,197,94,0.1);
    color: #16a34a;
    border-color: rgba(34,197,94,0.25);
}

.proto-card > p {
    font-size: 0.84rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 14px;
}

.proto-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.proto-tags span {
    font-size: 0.7rem;
    background: var(--bg-gray);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2px 8px;
}

/* ─── Section 4: Proxy Groups ────────────────────────────────── */
.pg-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.pg-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    background: var(--bg-white);
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.pg-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0,0,0,0.07);
}

.pg-card--primary {
    background: linear-gradient(135deg, #f2f2ff, #eaecff);
    border-color: rgba(99,102,241,0.25);
}

.pg-card-top {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.pg-icon {
    width: 48px;
    height: 48px;
    background: rgba(99,102,241,0.12);
    color: var(--primary-solid);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.pg-card-top h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.pg-type {
    font-family: 'Courier New', monospace;
    font-size: 0.74rem;
    background: rgba(0,0,0,0.05);
    color: var(--text-muted);
    padding: 2px 8px;
    border-radius: 4px;
}

.pg-card > p {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.72;
    margin-bottom: 18px;
}

.pg-features {
    display: flex;
    flex-direction: column;
    gap: 9px;
    list-style: none;
}

.pg-features li {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 0.84rem;
    color: var(--text-main);
}

.pg-features li i {
    color: #22c55e;
    font-size: 0.76rem;
    flex-shrink: 0;
}

/* ─── Section 5: TUN Mode ────────────────────────────────────── */
.tun-layout {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 72px;
    align-items: center;
}

.tun-intro {
    font-size: 0.925rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 18px;
}

.tun-intro code {
    font-family: 'Courier New', monospace;
    font-size: 0.84rem;
    background: rgba(0,0,0,0.05);
    padding: 1px 6px;
    border-radius: 3px;
    color: var(--primary-solid);
}

.tun-benefits {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-top: 28px;
}

.tun-benefit {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.tun-benefit > i {
    width: 34px;
    height: 34px;
    background: rgba(99,102,241,0.1);
    color: var(--primary-solid);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.tun-benefit > div {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.tun-benefit strong {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-dark);
}

.tun-benefit span {
    font-size: 0.84rem;
    color: var(--text-light);
    line-height: 1.5;
}

/* TUN Visual Diagram */
.tun-visual {
    background: var(--bg-gray);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 30px;
}

.tun-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.tun-layer {
    width: 100%;
    border-radius: 10px;
    padding: 16px 18px;
    text-align: center;
}

.tun-layer--app {
    background: #f8f9fa;
    border: 1px solid var(--border-color);
}

.tun-layer--tun {
    background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(99,102,241,0.08));
    border: 1px solid rgba(99,102,241,0.3);
}

.tun-layer--engine {
    background: linear-gradient(135deg, rgba(79,70,229,0.12), rgba(67,56,202,0.08));
    border: 1px solid rgba(79,70,229,0.25);
}

.tun-layer-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.tun-layer-sub {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
}

.tun-apps {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.tun-apps span {
    font-size: 0.74rem;
    color: var(--text-light);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 4px 10px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.tun-apps span i { color: var(--primary-solid); }

.tun-arrow-down {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 6px 0;
    opacity: 0.5;
}

.tun-split {
    width: 100%;
    padding-top: 10px;
}

.tun-split-line {
    width: 1px;
    height: 16px;
    background: var(--border-color);
    margin: 0 auto 12px;
}

.tun-split-paths {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.tun-path {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 8px;
    padding: 10px;
    font-size: 0.82rem;
    font-weight: 600;
}

.tun-path--direct { background: #0d1f0d; border: 1px solid #1e3c1e; color: #4caf50; }
.tun-path--proxy  { background: #0d0d22; border: 1px solid #2a2a55; color: #7c6af7; }

/* ─── Section 6: Platform Cards ──────────────────────────────── */
.platform-cards {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.plat-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 26px 20px;
    background: var(--bg-white);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.plat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 40px rgba(0,0,0,0.08);
}

.plat-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 14px;
    flex-shrink: 0;
}

.plat-icon--windows { background: rgba(0,120,212,0.1); color: #0078d4; }
.plat-icon--mac     { background: rgba(0,0,0,0.07); color: #333; }
.plat-icon--android { background: rgba(61,220,132,0.12); color: #3ddc84; }
.plat-icon--ios     { background: rgba(0,0,0,0.07); color: #555; }
.plat-icon--linux   { background: rgba(252,177,23,0.12); color: #c47f00; }

.plat-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.plat-client {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.plat-client strong {
    color: var(--primary-solid);
}

.plat-specs {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 20px;
    width: 100%;
}

.plat-specs li {
    font-size: 0.78rem;
    color: var(--text-light);
    text-align: left;
    padding-left: 14px;
    position: relative;
}

.plat-specs li::before {
    content: '·';
    position: absolute;
    left: 0;
    color: var(--primary-solid);
    font-weight: 700;
}

.plat-dl-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-solid);
    border: 1px solid rgba(99,102,241,0.3);
    border-radius: 6px;
    padding: 8px 16px;
    background: rgba(99,102,241,0.05);
    transition: all 0.22s ease;
    width: 100%;
    justify-content: center;
    margin-top: auto;
}

.plat-dl-btn:hover {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
}

/* ─── Section 7: Open Source ─────────────────────────────────── */
.oss-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 52px;
}

.oss-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px;
    background: var(--bg-white);
    transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.oss-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0,0,0,0.07);
}

.oss-card--wide {
    grid-column: span 2;
}

.oss-card--dark {
    background: linear-gradient(135deg, #1e1b4b 0%, #2d2a7a 100%);
    border-color: rgba(99,102,241,0.3);
}

.oss-card.oss-card--dark h3 {
    color: #fff;
}

.oss-card.oss-card--dark p {
    color: rgba(255,255,255,0.85);
}

.oss-card.oss-card--dark .btn-outline {
    color: #fff;
    border-color: rgba(255,255,255,0.45);
    background: rgba(255,255,255,0.08);
}

.oss-card.oss-card--dark .btn-outline:hover {
    color: #fff;
    border-color: rgba(255,255,255,0.85);
    background: rgba(255,255,255,0.15);
}


.oss-card-inner {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.oss-icon {
    width: 52px;
    height: 52px;
    background: rgba(255,255,255,0.12);
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.oss-icon--sm {
    width: 44px;
    height: 44px;
    background: rgba(99,102,241,0.1);
    color: var(--primary-solid);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.oss-body { flex: 1; }

.oss-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.oss-card p {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.75;
}

/* Stats row */
.oss-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    background: var(--bg-gray);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 36px 0;
}

.oss-stat {
    flex: 1;
    text-align: center;
}

.oss-stat-num {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 800;
    font-style: italic;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    line-height: 1;
    margin-bottom: 8px;
}

.oss-stat-label {
    font-size: 0.84rem;
    color: var(--text-light);
}

.oss-stat-divider {
    width: 1px;
    height: 56px;
    background: var(--border-color);
    flex-shrink: 0;
}

/* ─── Final CTA Section ──────────────────────────────────────── */
.feat-cta-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.feat-cta-box {
    position: relative;
    background: linear-gradient(135deg, #1e1b4b 0%, #3730a3 55%, #4f46e5 100%);
    border-radius: 18px;
    padding: 72px 60px;
    text-align: center;
    overflow: hidden;
}

.feat-cta-deco {
    position: absolute;
    top: -80px;
    right: -80px;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.07) 0%, transparent 70%);
    pointer-events: none;
}

.feat-cta-box h2 {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 800;
    font-style: italic;
    color: #fff;
    margin-bottom: 14px;
}

.feat-cta-box p {
    font-size: 1rem;
    color: rgba(255,255,255,0.65);
    max-width: 480px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.feat-cta-btns {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.btn-outline--light {
    color: rgba(255,255,255,0.85);
    border-color: rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.05);
}

.btn-outline--light:hover {
    color: #fff;
    border-color: rgba(255,255,255,0.7);
    background: rgba(255,255,255,0.12);
}

.feat-cta-platforms {
    display: flex;
    justify-content: center;
    gap: 22px;
    flex-wrap: wrap;
}

.feat-cta-platforms span {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.45);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ─── Responsive Breakpoints ─────────────────────────────────── */
@media (max-width: 1100px) {
    .platform-cards {
        grid-template-columns: repeat(3, 1fr);
    }
    .platform-cards .plat-card:nth-child(4),
    .platform-cards .plat-card:nth-child(5) {
        grid-column: span 1;
    }
}

@media (max-width: 992px) {
    .highlights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .hl-card--wide {
        grid-column: span 2;
    }
    .proto-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .proto-card--highlight {
        grid-column: span 1;
    }
    .rule-types-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .rt-card--featured {
        grid-column: span 2;
    }
    .tun-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .oss-grid {
        grid-template-columns: 1fr;
    }
    .oss-card--wide {
        grid-column: span 1;
    }
    .oss-card-inner {
        flex-direction: column;
    }
    .platform-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .feat-hero {
        padding: 100px 24px 44px;
    }
    .feat-hero h1 {
        font-size: 2rem;
    }
    .feat-hero-chips {
        gap: 8px;
    }
    .feat-chip {
        padding: 7px 13px;
        font-size: 0.82rem;
    }
    .feat-hero-stats {
        gap: 0;
    }
    .feat-stat {
        padding: 0 14px;
    }
    .feat-stat-num {
        font-size: 1.5rem;
    }
    .feat-section {
        padding: 64px 0;
    }
    .feat-section-head h2 {
        font-size: 1.9rem;
    }
    .highlights-grid {
        grid-template-columns: 1fr;
    }
    .hl-card--wide {
        grid-column: span 1;
        flex-direction: column;
    }
    .proto-grid {
        grid-template-columns: 1fr;
    }
    .pg-grid {
        grid-template-columns: 1fr;
    }
    .rule-types-grid {
        grid-template-columns: 1fr;
    }
    .rt-card--featured {
        grid-column: span 1;
        flex-direction: column;
    }
    .rule-engine-flow {
        min-width: 600px;
    }
    .platform-cards {
        grid-template-columns: 1fr 1fr;
    }
    .oss-stats {
        flex-direction: column;
        gap: 28px;
        padding: 36px 24px;
    }
    .oss-stat-divider {
        width: 56px;
        height: 1px;
    }
    .feat-cta-box {
        padding: 48px 28px;
    }
    .feat-cta-box h2 {
        font-size: 1.8rem;
    }
    .feat-cta-btns {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .platform-cards {
        grid-template-columns: 1fr;
    }
    .hl-stats-row {
        gap: 24px;
    }
}