/* ================================================================
   NEXUS AI — Product Detail Page
   Design: Premium Enterprise SaaS / Futuristic & Trustworthy
================================================================ */

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    background: #070B14;
    color: #E8EDF5;
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    font-weight: 300;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a   { text-decoration: none; color: inherit; }
ul  { list-style: none; }
button { cursor: pointer; background: none; border: none; font-family: inherit; }

/* ── Variables ─────────────────────────────────────────────── */
:root {
    --dark:      #070B14;
    --surface:   #0E1321;
    --card:      #131C30;
    --border:    rgba(255,255,255,0.07);
    --accent:    #B7A189;
    --accent-d:  rgba(183,161,137,0.12);
    --positive:  #4ECCA3;
    --text:      #E8EDF5;
    --text-dim:  rgba(232,237,245,0.52);
    --light-bg:  #F4F6FB;
    --light-card:#FFFFFF;
    --light-text:#0A0E1A;
    --light-gray:#52576B;
    --light-bdr: #E4E8F0;
    --gold:      #B89B5E;
    --max-w:     1200px;
    --pad-x:     72px;
    --ease:      cubic-bezier(0.25,0.1,0.25,1);
    --ease-out:  cubic-bezier(0.16,1,0.3,1);
}

/* ── Layout ─────────────────────────────────────────────────── */
.nx-container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad-x); }
.nx-section   { padding: 120px 0; }
.nx-section--light { background: var(--light-bg); }
.nx-section--white { background: #fff; }

/* ── Header ──────────────────────────────────────────────────── */
.nx-header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--pad-x);
    height: 68px;
    background: rgba(7,11,20,0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.nx-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.58rem;
    letter-spacing: 0.28em;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
}
.nx-logo-mark {
    font-family: 'DM Serif Display', serif;
    font-style: italic;
    font-size: 1.3rem;
    font-weight: 400;
    color: #fff;
    letter-spacing: -0.02em;
}
.nx-logo-sep { color: var(--border); margin: 0 8px; }
.nx-product-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.6rem;
    letter-spacing: 0.3em;
    color: var(--accent);
    text-transform: uppercase;
    font-weight: 500;
}
.nx-product-badge::before {
    content: '';
    display: block;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent);
}
.nx-header-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nx-header-nav a {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: rgba(255,255,255,0.55);
    transition: color 0.3s;
}
.nx-header-nav a:hover { color: #fff; }
.nx-btn-contact {
    padding: 8px 24px;
    border: 1px solid rgba(183,161,137,0.4);
    color: var(--accent) !important;
    font-size: 0.68rem !important;
    letter-spacing: 0.18em !important;
    transition: background 0.3s, border-color 0.3s !important;
}
.nx-btn-contact:hover {
    background: var(--accent-d) !important;
    border-color: var(--accent) !important;
}

/* ── Kicker / Label ──────────────────────────────────────────── */
.nx-kicker {
    font-size: 0.58rem;
    font-weight: 500;
    letter-spacing: 0.42em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.nx-kicker::before {
    content: '';
    display: block;
    width: 28px; height: 1px;
    background: var(--accent);
    opacity: 0.6;
}
.nx-kicker--dark { color: #9A8270; }
.nx-kicker--dark::before { background: #9A8270; }

/* ── Reveal ──────────────────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.12s; }
.reveal-d2 { transition-delay: 0.24s; }
.reveal-d3 { transition-delay: 0.36s; }

/* ================================================================
   01 HERO
================================================================ */
.hero {
    min-height: 100svh;
    padding-top: 68px;
    display: flex;
    align-items: center;
    background: var(--dark);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 70% at 80% 50%, rgba(183,161,137,0.07) 0%, transparent 70%),
        radial-gradient(ellipse 40% 50% at 20% 80%, rgba(78,204,163,0.05) 0%, transparent 60%);
    pointer-events: none;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 64px;
    align-items: center;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 6px 16px;
    border: 1px solid rgba(183,161,137,0.3);
    font-size: 0.6rem;
    letter-spacing: 0.35em;
    color: var(--accent);
    text-transform: uppercase;
    font-weight: 500;
    margin-bottom: 36px;
}
.hero-tag span {
    display: block;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 6px var(--accent);
}
.hero-title {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(2.4rem, 4.5vw, 4.2rem);
    font-weight: 400;
    line-height: 1.12;
    color: #fff;
    letter-spacing: -0.01em;
    margin-bottom: 28px;
}
.hero-title em {
    font-style: italic;
    color: var(--accent);
}
.hero-desc {
    font-size: 0.92rem;
    color: var(--text-dim);
    line-height: 2;
    margin-bottom: 48px;
    max-width: 440px;
}

.hero-stats {
    display: flex;
    gap: 36px;
    margin-bottom: 48px;
    padding-top: 36px;
    border-top: 1px solid var(--border);
}
.stat-num {
    font-family: 'DM Serif Display', serif;
    font-size: 2rem;
    font-weight: 400;
    color: #fff;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 6px;
}
.stat-num em { font-style: normal; color: var(--accent); }
.stat-label {
    font-size: 0.65rem;
    color: var(--text-dim);
    letter-spacing: 0.1em;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    align-items: center;
}
.btn-primary {
    display: inline-block;
    padding: 14px 40px;
    background: var(--accent);
    color: #070B14;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transition: opacity 0.3s, transform 0.2s;
}
.btn-primary:hover { opacity: 0.88; }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost {
    display: inline-block;
    padding: 14px 32px;
    border: 1px solid var(--border);
    color: rgba(255,255,255,0.6);
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transition: border-color 0.3s, color 0.3s;
}
.btn-ghost:hover { border-color: rgba(255,255,255,0.3); color: #fff; }

/* ── Dashboard Mockup ────────────────────────────────────────── */
.hero-right { position: relative; }
.dashboard {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.04),
        0 32px 80px rgba(0,0,0,0.6),
        0 0 120px rgba(183,161,137,0.06);
    position: relative;
}
.dashboard::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(183,161,137,0.4), transparent);
}

.dash-topbar {
    background: #0A1020;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
}
.dash-topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}
.dash-dot { width: 9px; height: 9px; border-radius: 50%; }
.dash-dot--r { background: #FF5F56; }
.dash-dot--y { background: #FEBC2E; }
.dash-dot--g { background: #27C93F; }
.dash-brand {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--accent);
    margin-left: 8px;
}
.dash-topbar-nav { display: flex; gap: 20px; }
.dash-topbar-nav span {
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.35);
}
.dash-topbar-nav span.active { color: var(--accent); }
.dash-avatar {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--positive));
}

.dash-body {
    padding: 18px;
    display: grid;
    grid-template-columns: 1fr 180px;
    grid-template-rows: auto 1fr;
    gap: 12px;
}

.dash-kpis {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}
.kpi-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 16px;
}
.kpi-label {
    font-size: 0.55rem;
    letter-spacing: 0.2em;
    color: var(--text-dim);
    text-transform: uppercase;
    display: block;
    margin-bottom: 8px;
}
.kpi-value {
    font-family: 'DM Serif Display', serif;
    font-size: 1.25rem;
    font-weight: 400;
    color: #fff;
    letter-spacing: -0.01em;
    display: block;
    line-height: 1;
    margin-bottom: 6px;
}
.kpi-change {
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 4px;
}
.kpi-change--up { color: var(--positive); }
.kpi-change--down { color: #FF6B6B; }

.dash-chart-wrap {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}
.dash-chart-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 14px;
}
.dash-chart-title {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.7);
}
.dash-chart-value {
    font-family: 'DM Serif Display', serif;
    font-size: 1.1rem;
    color: #fff;
    letter-spacing: -0.01em;
}
.dash-chart-badge {
    font-size: 0.55rem;
    padding: 3px 8px;
    background: rgba(78,204,163,0.15);
    color: var(--positive);
    border-radius: 100px;
    font-weight: 500;
}
.dash-chart-svg { width: 100%; height: 90px; }
.dash-chart-months {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
}
.dash-chart-months span {
    font-size: 0.5rem;
    color: var(--text-dim);
    letter-spacing: 0.06em;
}

.dash-side { display: flex; flex-direction: column; gap: 10px; }
.dash-risk {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.dash-risk-label {
    font-size: 0.52rem;
    letter-spacing: 0.2em;
    color: var(--text-dim);
    text-transform: uppercase;
    align-self: flex-start;
}
.dash-risk-gauge { position: relative; width: 72px; height: 72px; }
.gauge-num {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.gauge-num strong {
    font-family: 'DM Serif Display', serif;
    font-size: 1.2rem;
    color: var(--positive);
    line-height: 1;
}
.gauge-num small { font-size: 0.5rem; color: var(--text-dim); }
.dash-risk-status {
    font-size: 0.55rem;
    font-weight: 500;
    color: var(--positive);
    letter-spacing: 0.1em;
}

.dash-ai-reco {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px;
    flex: 1;
}
.ai-reco-label {
    font-size: 0.52rem;
    letter-spacing: 0.2em;
    color: var(--accent);
    text-transform: uppercase;
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
}
.ai-reco-item {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}
.ai-reco-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.ai-reco-icon {
    width: 18px; height: 18px;
    border-radius: 4px;
    background: var(--accent-d);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    flex-shrink: 0;
    margin-top: 1px;
}
.ai-reco-text { font-size: 0.58rem; color: rgba(255,255,255,0.6); line-height: 1.6; }
.ai-reco-text strong { color: #fff; display: block; }

.dash-chat {
    margin: 0 18px 18px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px;
}
.chat-msgs { margin-bottom: 10px; display: flex; flex-direction: column; gap: 8px; }
.chat-msg { display: flex; gap: 8px; align-items: flex-start; }
.chat-msg--user { flex-direction: row-reverse; }
.chat-avatar {
    width: 22px; height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg, #7A6355, #B7A189);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.5rem;
    color: #fff;
}
.chat-avatar--ai { background: linear-gradient(135deg, var(--positive), #9A8270); }
.chat-bubble {
    padding: 7px 11px;
    border-radius: 10px;
    font-size: 0.6rem;
    line-height: 1.5;
    max-width: 80%;
}
.chat-bubble--user {
    background: rgba(183,161,137,0.18);
    color: rgba(255,255,255,0.85);
    border-bottom-right-radius: 2px;
}
.chat-bubble--ai {
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.75);
    border-bottom-left-radius: 2px;
}
.chat-bubble--ai strong { color: var(--positive); }
.chat-input {
    display: flex;
    gap: 8px;
    align-items: center;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 12px;
}
.chat-input-text { font-size: 0.58rem; color: var(--text-dim); flex: 1; }
.chat-send {
    width: 20px; height: 20px;
    background: var(--accent);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.5rem;
    color: #070B14;
    flex-shrink: 0;
}

/* ================================================================
   02 PROBLEM
================================================================ */
.problem-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--light-text);
    letter-spacing: -0.01em;
    margin-bottom: 16px;
}
.problem-sub {
    font-size: 0.9rem;
    color: var(--light-gray);
    line-height: 2;
    margin-bottom: 72px;
    max-width: 520px;
}
.problem-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.problem-card {
    background: var(--light-card);
    border: 1px solid var(--light-bdr);
    padding: 40px 36px;
    box-shadow: 0 2px 24px rgba(10,14,26,0.06);
    transition: box-shadow 0.35s var(--ease), transform 0.35s var(--ease);
}
.problem-card:hover {
    box-shadow: 0 8px 40px rgba(10,14,26,0.1);
    transform: translateY(-4px);
}
.problem-card-num {
    font-size: 0.55rem;
    letter-spacing: 0.32em;
    color: #9A8270;
    font-weight: 500;
    margin-bottom: 20px;
    display: block;
}
.problem-icon {
    width: 48px; height: 48px;
    margin-bottom: 24px;
    background: #F5F0EA;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.problem-icon svg { width: 22px; height: 22px; }
.problem-card-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--light-text);
    margin-bottom: 14px;
    letter-spacing: -0.01em;
}
.problem-card-desc { font-size: 0.85rem; color: var(--light-gray); line-height: 2; }

/* ================================================================
   03 SOLUTION
================================================================ */
.solution { background: var(--dark); position: relative; overflow: hidden; }
.solution::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(183,161,137,0.05) 0%, transparent 70%);
    pointer-events: none;
}
.solution-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    color: #fff;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}
.solution-heading em { font-style: italic; color: var(--accent); }
.solution-sub { font-size: 0.9rem; color: var(--text-dim); margin-bottom: 80px; max-width: 480px; }

.solution-diagram {
    position: relative;
    width: 560px;
    height: 440px;
    margin: 0 auto;
}
.diag-center {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 164px; height: 164px;
    background: linear-gradient(135deg, rgba(183,161,137,0.18), rgba(78,204,163,0.12));
    border: 1px solid rgba(183,161,137,0.35);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    z-index: 2;
    box-shadow: 0 0 60px rgba(183,161,137,0.12), 0 0 0 16px rgba(183,161,137,0.04);
}
.diag-center-label {
    font-size: 0.52rem;
    letter-spacing: 0.28em;
    color: var(--accent);
    text-transform: uppercase;
    font-weight: 500;
}
.diag-center-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1rem;
    color: #fff;
    font-weight: 400;
    text-align: center;
    line-height: 1.3;
}
.diag-center-pulse {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--positive);
    box-shadow: 0 0 10px var(--positive);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(0.8); }
}
.diag-svg {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    pointer-events: none;
}
.diag-node {
    position: absolute;
    width: 110px;
    padding: 14px 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    z-index: 2;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.diag-node:hover {
    border-color: rgba(183,161,137,0.3);
    box-shadow: 0 0 20px rgba(183,161,137,0.08);
}
.diag-node--tl { top: 20px; left: 20px; }
.diag-node--tr { top: 20px; right: 20px; }
.diag-node--bl { bottom: 20px; left: 20px; }
.diag-node--br { bottom: 20px; right: 20px; }
.diag-node-icon { font-size: 1rem; margin-bottom: 8px; display: block; }
.diag-node-label {
    font-size: 0.52rem;
    letter-spacing: 0.18em;
    color: var(--text-dim);
    text-transform: uppercase;
    display: block;
    margin-bottom: 3px;
}
.diag-node-name { font-size: 0.75rem; font-weight: 500; color: rgba(255,255,255,0.85); }

/* ================================================================
   04 FEATURES
================================================================ */
.features-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--light-text);
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}
.features-sub { font-size: 0.9rem; color: var(--light-gray); margin-bottom: 72px; max-width: 480px; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
    background: var(--light-card);
    border: 1px solid var(--light-bdr);
    padding: 0 0 36px;
    overflow: hidden;
    transition: box-shadow 0.35s, transform 0.35s;
}
.feature-card:hover {
    box-shadow: 0 8px 40px rgba(10,14,26,0.09);
    transform: translateY(-4px);
}
.feature-preview {
    background: #0A1020;
    height: 160px;
    padding: 16px;
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
}
.feature-preview::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0; height: 40px;
    background: linear-gradient(to bottom, transparent, #0A1020);
}
.fp-bars { display: flex; align-items: flex-end; gap: 6px; height: 100%; padding-bottom: 8px; }
.fp-bar {
    flex: 1;
    background: rgba(183,161,137,0.25);
    border-radius: 3px 3px 0 0;
    position: relative;
    transition: background 0.3s;
}
.fp-bar.active { background: var(--accent); }
.fp-bar::after {
    content: '';
    position: absolute;
    top: -1px; left: 0; right: 0;
    height: 2px;
    background: rgba(255,255,255,0.3);
    border-radius: 1px;
}
.fp-chat { display: flex; flex-direction: column; gap: 8px; }
.fp-chat-item { display: flex; gap: 8px; align-items: flex-start; }
.fp-chat-item--right { flex-direction: row-reverse; }
.fp-chat-dot {
    width: 18px; height: 18px;
    border-radius: 50%;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--accent), var(--positive));
}
.fp-chat-bubble {
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 0.52rem;
    color: rgba(255,255,255,0.7);
    max-width: 75%;
    line-height: 1.5;
}
.fp-chat-bubble--left { background: rgba(255,255,255,0.06); border-bottom-left-radius: 2px; }
.fp-chat-bubble--right { background: rgba(183,161,137,0.2); border-bottom-right-radius: 2px; }
.fp-reco { display: flex; flex-direction: column; gap: 6px; }
.fp-reco-item {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 6px;
    padding: 8px 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.fp-reco-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.fp-reco-dot--1 { background: var(--positive); }
.fp-reco-dot--2 { background: var(--accent); }
.fp-reco-dot--3 { background: #FFB347; }
.fp-reco-text { font-size: 0.52rem; color: rgba(255,255,255,0.6); line-height: 1.4; }
.fp-reco-score { margin-left: auto; font-size: 0.55rem; font-weight: 600; color: var(--positive); white-space: nowrap; }

.feature-card-body { padding: 0 28px; }
.feature-num {
    font-size: 0.55rem;
    letter-spacing: 0.32em;
    color: #9A8270;
    font-weight: 500;
    display: block;
    margin-bottom: 12px;
}
.feature-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--light-text);
    letter-spacing: -0.01em;
    margin-bottom: 6px;
}
.feature-title-en {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    color: #999;
    text-transform: uppercase;
    margin-bottom: 14px;
    display: block;
}
.feature-desc { font-size: 0.84rem; color: var(--light-gray); line-height: 2; }

/* ================================================================
   05 USE CASES
================================================================ */
.usecase { background: var(--dark); }
.usecase-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    color: #fff;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}
.usecase-sub { font-size: 0.9rem; color: var(--text-dim); margin-bottom: 56px; max-width: 480px; }

.usecase-scroll {
    overflow-x: auto;
    scrollbar-width: none;
    cursor: grab;
    -webkit-overflow-scrolling: touch;
    margin: 0 calc(-1 * var(--pad-x));
    padding: 0 var(--pad-x);
}
.usecase-scroll:active { cursor: grabbing; }
.usecase-scroll::-webkit-scrollbar { display: none; }
.usecase-track { display: flex; gap: 18px; width: max-content; padding-right: calc(var(--pad-x) + 18px); }
.usecase-card {
    width: 280px;
    flex-shrink: 0;
    background: var(--card);
    border: 1px solid var(--border);
    padding: 32px 28px;
    position: relative;
    overflow: hidden;
    transition: border-color 0.35s, box-shadow 0.35s;
    cursor: default;
}
.usecase-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(183,161,137,0.06), transparent);
    opacity: 0;
    transition: opacity 0.35s;
}
.usecase-card:hover { border-color: rgba(183,161,137,0.25); box-shadow: 0 0 30px rgba(183,161,137,0.06); }
.usecase-card:hover::before { opacity: 1; }
.usecase-icon { font-size: 1.8rem; margin-bottom: 20px; display: block; }
.usecase-cat {
    font-size: 0.55rem;
    letter-spacing: 0.32em;
    color: var(--accent);
    text-transform: uppercase;
    font-weight: 500;
    display: block;
    margin-bottom: 10px;
}
.usecase-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1.15rem;
    font-weight: 400;
    color: #fff;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
}
.usecase-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.usecase-tag {
    font-size: 0.58rem;
    padding: 4px 10px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.09);
    color: var(--text-dim);
    letter-spacing: 0.06em;
    border-radius: 100px;
}

/* ================================================================
   CTA
================================================================ */
.nx-cta {
    background: linear-gradient(135deg, #0A1020, #0E1A35);
    padding: 100px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}
.nx-cta-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 400;
    color: #fff;
    letter-spacing: -0.01em;
    margin-bottom: 20px;
}
.nx-cta-heading em { font-style: italic; color: var(--accent); }
.nx-cta-sub { font-size: 0.92rem; color: var(--text-dim); margin-bottom: 48px; }
.nx-cta-btns { display: flex; gap: 16px; justify-content: center; }

/* ================================================================
   FOOTER
================================================================ */
.nx-footer {
    background: #040709;
    padding: 48px 0;
    border-top: 1px solid var(--border);
}
.nx-footer-inner { display: flex; justify-content: space-between; align-items: center; }
.nx-footer-copy { font-size: 0.62rem; letter-spacing: 0.1em; color: rgba(255,255,255,0.2); }
.nx-footer-back {
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    color: rgba(255,255,255,0.4);
    border-bottom: 1px solid rgba(255,255,255,0.15);
    padding-bottom: 2px;
    transition: color 0.3s, border-color 0.3s;
}
.nx-footer-back:hover { color: var(--accent); border-color: var(--accent); }

/* ================================================================
   RESPONSIVE
================================================================ */
@media (max-width: 1024px) {
    :root { --pad-x: 48px; }
    .hero-inner { grid-template-columns: 1fr; gap: 56px; }
    .hero-right { max-width: 600px; }
}
@media (max-width: 768px) {
    :root { --pad-x: 24px; }
    .nx-section { padding: 80px 0; }
    .problem-cards { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .solution-diagram { width: 100%; height: 360px; }
    .diag-node { width: 90px; }
    .diag-center { width: 130px; height: 130px; }
    .nx-header-nav { display: none; }
    .hero-stats { flex-wrap: wrap; gap: 24px; }
    .nx-cta-btns { flex-direction: column; align-items: center; }
}