/* =============================================================
   FLOW — Unified Integration Layer
   Design: Stripe × Linear × Palantir / Silver / Node Networks
============================================================= */

/* ── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    background: #fff;
    color: #0E0F14;
    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 {
    --bg:        #FFFFFF;
    --bg-alt:    #F4F5F8;
    --bg-dark:   #0C0D12;
    --node-bg:   #181A22;
    --text:      #0E0F14;
    --gray:      #5A6070;
    --gray-lt:   #9BA3AF;
    --border:    #E2E5EA;
    --accent:    #B7A189;
    --accent-d:  rgba(183,161,137,0.1);
    --silver:    #C5C8D2;
    --connector: rgba(197,200,210,0.55);
    --node-line: rgba(183,161,137,0.4);
    --positive:  #2D9F5D;
    --shadow:    0 2px 20px rgba(14,15,20,0.06);
    --shadow-lg: 0 8px 48px rgba(14,15,20,0.1);
    --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 ─────────────────────────────────────────────────── */
.fl-container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad-x); }
.fl-section   { padding: 120px 0; }
.fl-section--alt  { background: var(--bg-alt); }
.fl-section--dark { background: var(--bg-dark); }

/* ── Kicker ──────────────────────────────────────────────────── */
.fl-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;
}
.fl-kicker::before {
    content: '';
    display: block;
    width: 28px; height: 1px;
    background: var(--accent);
    opacity: 0.6;
}
.fl-kicker--center { justify-content: center; }
.fl-kicker--dark   { color: rgba(183,161,137,0.7); }
.fl-kicker--dark::before { background: rgba(183,161,137,0.7); }

/* ── Reveal ──────────────────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(26px);
    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; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn-primary {
    display: inline-block;
    padding: 14px 40px;
    background: var(--text);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transition: background 0.3s, transform 0.2s;
}
.btn-primary:hover { background: var(--accent); }
.btn-primary:active { transform: scale(0.98); }
.btn-outline {
    display: inline-block;
    padding: 14px 32px;
    border: 1px solid var(--border);
    color: var(--gray);
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transition: border-color 0.3s, color 0.3s;
}
.btn-outline:hover { border-color: var(--text); color: var(--text); }
.btn-outline--light {
    border-color: rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.6);
}
.btn-outline--light:hover {
    border-color: rgba(255,255,255,0.5);
    color: #fff;
}

/* ================================================================
   HEADER
================================================================ */
.fl-header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 100;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--pad-x);
    background: rgba(255,255,255,0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.fl-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.58rem;
    letter-spacing: 0.28em;
    color: var(--gray-lt);
    text-transform: uppercase;
}
.fl-logo-mark {
    font-family: 'DM Serif Display', serif;
    font-style: italic;
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--text);
    letter-spacing: -0.02em;
}
.fl-logo-sep { color: var(--border); margin: 0 8px; }
.fl-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;
}
.fl-product-badge::before {
    content: '';
    display: block;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.fl-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}
.fl-nav a {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--gray);
    transition: color 0.3s;
}
.fl-nav a:hover { color: var(--text); }
.fl-nav-cta {
    padding: 8px 24px;
    border: 1px solid var(--border);
    color: var(--text) !important;
    transition: background 0.3s, color 0.3s !important;
}
.fl-nav-cta:hover {
    background: var(--text) !important;
    color: #fff !important;
    border-color: var(--text) !important;
}

/* ================================================================
   01 HERO
================================================================ */
.hero {
    min-height: 100svh;
    padding-top: 68px;
    display: flex;
    align-items: center;
    background: var(--bg);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 45% 50% at 85% 45%, rgba(183,161,137,0.05) 0%, transparent 70%);
    pointer-events: none;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 72px;
    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: 32px;
    background: rgba(183,161,137,0.05);
}
.hero-tag span {
    display: block;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--accent);
}
.hero-title {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(2.2rem, 4vw, 3.8rem);
    font-weight: 400;
    line-height: 1.14;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}
.hero-title em { font-style: italic; color: var(--accent); }
.hero-desc {
    font-size: 0.92rem;
    color: var(--gray);
    line-height: 2;
    margin-bottom: 40px;
    max-width: 440px;
}
.hero-stats {
    display: flex;
    gap: 36px;
    padding: 24px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 40px;
}
.stat-num {
    font-family: 'DM Serif Display', serif;
    font-size: 1.9rem;
    color: var(--text);
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 5px;
}
.stat-num em { font-style: normal; color: var(--accent); }
.stat-label { font-size: 0.65rem; color: var(--gray-lt); letter-spacing: 0.1em; }
.hero-ctas { display: flex; gap: 16px; }

/* ── Integration Network (Hero Right) ───────────────────────── */
.hero-right { }

.int-network {
    position: relative;
    width: 480px;
    height: 390px;
    margin: 0 auto;
}

/* SVG connector lines layer */
.int-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Central FLOW node */
.int-core {
    position: absolute;
    top: 168px; left: 177px;
    width: 126px; height: 54px;
    background: var(--text);
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2;
    box-shadow: 0 0 0 8px rgba(14,15,20,0.06), 0 8px 32px rgba(14,15,20,0.25);
}
.int-core-label {
    font-size: 0.48rem;
    letter-spacing: 0.28em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 3px;
}
.int-core-name {
    font-family: 'DM Serif Display', serif;
    font-style: italic;
    font-size: 1.1rem;
    color: #fff;
    letter-spacing: -0.01em;
    line-height: 1;
}

/* Service nodes */
.int-node {
    position: absolute;
    width: 90px; height: 40px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    z-index: 2;
    box-shadow: var(--shadow);
    font-size: 0.62rem;
    font-weight: 400;
    color: var(--text);
    letter-spacing: 0.04em;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.int-node:hover {
    border-color: rgba(183,161,137,0.45);
    box-shadow: 0 4px 24px rgba(14,15,20,0.1);
}
.int-node-icon { font-size: 0.9rem; }

/* Node positions */
.int-node--analytics { top: 18px;  left: 90px; }
.int-node--marketing { top: 18px;  left: 300px; }
.int-node--crm       { top: 128px; left: 8px; }
.int-node--database  { top: 224px; left: 8px; }
.int-node--cloud     { top: 128px; right: 8px; }
.int-node--ai        { top: 224px; right: 8px; }
.int-node--logistics { top: 332px; left: 90px; }
.int-node--payment   { top: 332px; left: 300px; }

/* Pulse animation on central node */
@keyframes intPulse {
    0%, 100% { box-shadow: 0 0 0 8px rgba(14,15,20,0.06), 0 8px 32px rgba(14,15,20,0.25); }
    50%       { box-shadow: 0 0 0 14px rgba(183,161,137,0.08), 0 8px 40px rgba(14,15,20,0.3); }
}
.int-core { animation: intPulse 3s ease-in-out infinite; }

/* Data packet animation on lines */
@keyframes dataFlow {
    0%   { stroke-dashoffset: 200; opacity: 0; }
    10%  { opacity: 1; }
    90%  { opacity: 1; }
    100% { stroke-dashoffset: 0; opacity: 0; }
}

/* ================================================================
   02 EVERYTHING CONNECTED
================================================================ */
.connected-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    text-align: center;
}
.connected-sub {
    font-size: 0.9rem;
    color: var(--gray);
    text-align: center;
    margin-bottom: 72px;
}

/* Large hub diagram */
.hub-diagram {
    position: relative;
    width: 680px;
    height: 500px;
    margin: 0 auto;
}
.hub-svg {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    pointer-events: none;
}
.hub-core {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 140px; height: 140px;
    background: var(--text);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    z-index: 2;
    box-shadow:
        0 0 0 20px rgba(14,15,20,0.04),
        0 0 0 40px rgba(14,15,20,0.02),
        0 16px 60px rgba(14,15,20,0.3);
}
.hub-core-label {
    font-size: 0.48rem;
    letter-spacing: 0.3em;
    color: var(--accent);
    text-transform: uppercase;
}
.hub-core-name {
    font-family: 'DM Serif Display', serif;
    font-style: italic;
    font-size: 1.4rem;
    color: #fff;
    letter-spacing: -0.01em;
    line-height: 1;
}
.hub-core-pulse {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: intPulse 2s ease-in-out infinite;
}

/* Orbit nodes */
.hub-node {
    position: absolute;
    width: 108px; height: 44px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    font-size: 0.68rem;
    font-weight: 400;
    color: var(--text);
    z-index: 2;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s, border-color 0.3s;
}
.hub-node:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(183,161,137,0.4);
}
.hub-node-icon { font-size: 1rem; }

/* Hub node positions (centered in the 680×500 container, hub at 340,250) */
.hub-node--crm        { top: 22px;  left: 50px; }
.hub-node--erp        { top: 22px;  right: 50px; }
.hub-node--database   { top: 50%;   left: 0;  transform: translateY(-50%); }
.hub-node--cloud      { top: 50%;   right: 0; transform: translateY(-50%); }
.hub-node--ai         { bottom: 22px; left: 50px; }
.hub-node--payment    { bottom: 22px; right: 50px; }
.hub-node--analytics  { top: 0;  left: 50%; transform: translateX(-50%); }
.hub-node--logistics  { bottom: 0; left: 50%; transform: translateX(-50%); }
.hub-node--marketing  { top: 30%; left: 0; transform: translate(-10px,-50%); }

/* ================================================================
   03 ZERO FRICTION WORKFLOW
================================================================ */
.workflow-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}
.workflow-sub {
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 72px;
    max-width: 520px;
}

.workflow {
    display: flex;
    align-items: center;
    gap: 0;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: none;
}
.workflow::-webkit-scrollbar { display: none; }

.wf-step {
    flex-shrink: 0;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 22px;
    min-width: 130px;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
}
.wf-step-icon {
    font-size: 1.4rem;
    display: block;
    margin-bottom: 8px;
}
.wf-step-label {
    font-size: 0.55rem;
    letter-spacing: 0.28em;
    color: var(--accent);
    text-transform: uppercase;
    display: block;
    margin-bottom: 5px;
}
.wf-step-name {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text);
    letter-spacing: 0.02em;
}
.wf-step--start { background: var(--text); border-color: var(--text); }
.wf-step--start .wf-step-label { color: rgba(183,161,137,0.8); }
.wf-step--start .wf-step-name  { color: #fff; }
.wf-step--end { background: var(--text); border-color: var(--text); }
.wf-step--end .wf-step-label { color: rgba(183,161,137,0.8); }
.wf-step--end .wf-step-name  { color: #fff; }

.wf-connector {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 0 4px;
}
.wf-line {
    width: 32px; height: 1px;
    background: linear-gradient(90deg, var(--border), var(--accent), var(--border));
}
.wf-auto {
    font-size: 0.46rem;
    letter-spacing: 0.2em;
    color: var(--accent);
    text-transform: uppercase;
    white-space: nowrap;
}

/* ================================================================
   04 ENTERPRISE CONNECTIVITY
================================================================ */
.connect-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    text-align: center;
}
.connect-sub {
    font-size: 0.9rem;
    color: var(--gray);
    text-align: center;
    margin-bottom: 72px;
}
.connect-panels {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    align-items: center;
}
.connect-panel {
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 36px;
    min-height: 340px;
    position: relative;
    overflow: hidden;
}
.connect-panel--before { background: #fff; }
.connect-panel--after  { background: var(--text); }

.connect-panel-badge {
    font-size: 0.55rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    display: inline-block;
    padding: 4px 12px;
    border-radius: 100px;
    margin-bottom: 16px;
    font-weight: 500;
}
.connect-panel--before .connect-panel-badge {
    background: #FEF2F2;
    color: #E05C52;
    border: 1px solid rgba(224,92,82,0.2);
}
.connect-panel--after .connect-panel-badge {
    background: rgba(45,159,93,0.15);
    color: var(--positive);
    border: 1px solid rgba(45,159,93,0.25);
}
.connect-panel-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1.15rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 28px;
}
.connect-panel--before .connect-panel-title { color: var(--text); }
.connect-panel--after  .connect-panel-title { color: #fff; }

/* Before: scattered chips */
.before-chips {
    position: relative;
    height: 180px;
}
.before-chip {
    position: absolute;
    padding: 6px 14px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.6rem;
    color: var(--gray);
    white-space: nowrap;
    box-shadow: var(--shadow);
}
.before-chip:nth-child(1) { top: 0;    left: 20px;  transform: rotate(-3deg); }
.before-chip:nth-child(2) { top: 30px; right: 10px; transform: rotate(4deg); }
.before-chip:nth-child(3) { top: 70px; left: 0;     transform: rotate(-5deg); }
.before-chip:nth-child(4) { top: 80px; left: 110px; transform: rotate(2deg); }
.before-chip:nth-child(5) { top: 120px; right: 30px; transform: rotate(-4deg); }
.before-chip:nth-child(6) { top: 145px; left: 40px; transform: rotate(3deg); }

/* After: organized grid */
.after-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}
.after-chip {
    padding: 7px 0;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    font-size: 0.58rem;
    color: rgba(255,255,255,0.65);
    text-align: center;
    letter-spacing: 0.04em;
    transition: background 0.3s;
}
.after-chip:hover { background: rgba(255,255,255,0.12); }
.after-chip-dot {
    display: block;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--positive);
    margin: 0 auto 6px;
    animation: blink 2s ease-in-out infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.3; }
}

/* Arrow between panels */
.connect-arrow {
    width: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 0 12px;
}
.connect-arrow-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--border), var(--accent), var(--border));
}
.connect-arrow-icon {
    font-size: 1.4rem;
    color: var(--accent);
    line-height: 1;
}
.connect-arrow-label {
    font-size: 0.5rem;
    letter-spacing: 0.22em;
    color: var(--gray-lt);
    text-transform: uppercase;
    text-align: center;
    line-height: 1.6;
}

/* ================================================================
   05 REAL-TIME SYNCHRONIZATION
================================================================ */
.realtime-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.15;
    color: #fff;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}
.realtime-heading em { font-style: italic; color: var(--accent); }
.realtime-sub {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.45);
    margin-bottom: 64px;
}

/* Node network canvas */
.realtime-panel {
    background: #13141A;
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px;
    padding: 40px;
    position: relative;
    overflow: hidden;
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.04),
        0 32px 80px rgba(0,0,0,0.5);
}
.realtime-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(rgba(197,200,210,0.06) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
}

.realtime-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    z-index: 2;
    margin-bottom: 40px;
}
.rt-stat {
    background: rgba(255,255,255,0.04);
    padding: 36px 28px;
    text-align: center;
}
.rt-stat-value {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(2.4rem, 4vw, 3.8rem);
    font-weight: 400;
    color: #fff;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 12px;
    display: block;
}
.rt-stat-value em { font-style: normal; color: var(--accent); }
.rt-stat-label {
    font-size: 0.65rem;
    letter-spacing: 0.22em;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    display: block;
    margin-bottom: 6px;
}
.rt-stat-sub {
    font-size: 0.72rem;
    color: rgba(255,255,255,0.25);
    letter-spacing: 0.04em;
}

/* Mini node network visualization */
.realtime-network {
    position: relative;
    height: 180px;
    z-index: 1;
}
.rt-net-svg {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
}
.rt-node {
    position: absolute;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    color: rgba(255,255,255,0.4);
    z-index: 2;
}
.rt-node.active {
    background: rgba(183,161,137,0.15);
    border-color: rgba(183,161,137,0.4);
    color: var(--accent);
}
.rt-node-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
}
.rt-node.active .rt-node-dot {
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent);
    animation: intPulse 2s ease-in-out infinite;
}

/* ================================================================
   CTA
================================================================ */
.fl-cta {
    background: var(--bg);
    padding: 100px 0;
    text-align: center;
    border-top: 1px solid var(--border);
}
.fl-cta-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 400;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}
.fl-cta-heading em { font-style: italic; color: var(--accent); }
.fl-cta-sub { font-size: 0.92rem; color: var(--gray); margin-bottom: 48px; }
.fl-cta-btns { display: flex; gap: 16px; justify-content: center; }

/* ── Trial Scope ─────────────────────────────────────────────── */
.trial-scope {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    align-items: start;
    margin-top: 64px;
    padding-top: 48px;
    border-top: 1px solid var(--border);
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 64px;
}
.trial-path {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px 28px 24px;
}
.trial-path-badge {
    display: inline-block;
    font-size: 0.58rem;
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    padding: 4px 14px;
    border-radius: 100px;
    margin-bottom: 20px;
}
.trial-path-badge--a {
    background: rgba(45,159,93,0.1);
    border: 1px solid rgba(45,159,93,0.25);
    color: #1A5C38;
}
.trial-path-badge--b {
    background: rgba(183,161,137,0.12);
    border: 1px solid rgba(183,161,137,0.3);
    color: var(--accent);
}
.trial-list { list-style: none; padding: 0; }
.trial-list-item {
    font-size: 0.78rem;
    color: var(--gray);
    padding: 6px 0 6px 22px;
    border-bottom: 1px solid var(--border);
    position: relative;
    line-height: 1.7;
}
.trial-list-item:last-child { border-bottom: none; }
.trial-list-item--ok::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #2D9F5D;
    font-size: 0.75rem;
    font-weight: 600;
}
.trial-list-item--no::before {
    content: '×';
    position: absolute;
    left: 0;
    color: #9BA3AF;
    font-size: 0.78rem;
}
.trial-list-item--no { color: var(--gray-lt); }

.trial-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    font-size: 0.65rem;
    color: var(--gray-lt);
    letter-spacing: 0.1em;
    padding-top: 48px;
}

.trial-note {
    text-align: center;
    font-size: 0.72rem;
    color: var(--gray-lt);
    margin-top: 24px;
    line-height: 1.8;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ================================================================
   VOICES — Customer Testimonials
================================================================ */
.fl-voices { background: var(--bg-alt); padding: 120px 0; }

.voices-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    text-align: center;
}
.voices-sub {
    font-size: 0.9rem;
    color: var(--gray);
    text-align: center;
    margin-bottom: 72px;
}

.voices-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.voice-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 36px 36px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s, transform 0.3s;
}
.voice-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}
.voice-mark {
    font-family: 'DM Serif Display', serif;
    font-size: 4rem;
    line-height: 0.7;
    color: var(--accent);
    opacity: 0.4;
    user-select: none;
}
.voice-text {
    font-size: 0.88rem;
    color: var(--text);
    line-height: 2;
    flex: 1;
    letter-spacing: 0.01em;
}
.voice-metric {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(183,161,137,0.08);
    border: 1px solid rgba(183,161,137,0.2);
    border-radius: 100px;
    margin-bottom: 16px;
}
.voice-metric-num {
    font-family: 'DM Serif Display', serif;
    font-size: 1.3rem;
    color: var(--accent);
    letter-spacing: -0.02em;
    font-style: italic;
}
.voice-metric-label {
    font-size: 0.6rem;
    color: var(--gray);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.voice-author {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.voice-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--gray);
    letter-spacing: 0.04em;
    flex-shrink: 0;
}
.voice-name {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text);
    letter-spacing: 0.02em;
    margin-bottom: 3px;
}
.voice-role {
    font-size: 0.65rem;
    color: var(--gray-lt);
    letter-spacing: 0.06em;
}

/* ================================================================
   FAQ
================================================================ */
.fl-faq { background: var(--bg); padding: 120px 0; border-top: 1px solid var(--border); }

.faq-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    text-align: center;
}
.faq-sub {
    font-size: 0.9rem;
    color: var(--gray);
    text-align: center;
    margin-bottom: 72px;
}
.faq-list {
    max-width: 760px;
    margin: 0 auto;
}
.faq-item {
    border-top: 1px solid var(--border);
}
.faq-item:last-child { border-bottom: 1px solid var(--border); }

.faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 28px 0;
    cursor: pointer;
    list-style: none;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text);
    letter-spacing: 0.01em;
    line-height: 1.6;
    transition: color 0.25s;
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q::after {
    content: '+';
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--accent);
    flex-shrink: 0;
    transition: transform 0.3s var(--ease-out);
    line-height: 1;
}
.faq-item[open] .faq-q { color: var(--accent); }
.faq-item[open] .faq-q::after { transform: rotate(45deg); }

.faq-a {
    padding: 0 0 28px;
    font-size: 0.84rem;
    color: var(--gray);
    line-height: 2;
    max-width: 640px;
}

/* ================================================================
   FOOTER
================================================================ */
.fl-footer {
    background: var(--text);
    padding: 48px 0;
}
.fl-footer-inner { display: flex; justify-content: space-between; align-items: center; }
.fl-footer-copy { font-size: 0.62rem; letter-spacing: 0.1em; color: rgba(255,255,255,0.2); }
.fl-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;
}
.fl-footer-back:hover { color: var(--accent); border-color: var(--accent); }

/* ================================================================
   07 MAIL SYSTEM
================================================================ */
.mail-heading {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}
.mail-heading em { font-style: italic; color: var(--accent); }
.mail-sub {
    font-size: 0.9rem;
    color: var(--gray);
    line-height: 2;
    margin-bottom: 72px;
    max-width: 640px;
}

/* ── Flow Diagram ──────────────────────────────────────────── */
.mail-flow {
    display: flex;
    align-items: center;
    gap: 0;
    max-width: 900px;
    margin: 0 auto 80px;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 4px;
}
.mail-flow::-webkit-scrollbar { display: none; }

.mf-step {
    flex-shrink: 0;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px 22px;
    min-width: 148px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s, border-color 0.3s;
}
.mf-step:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(183,161,137,0.3);
}
.mf-step--hub {
    background: var(--text);
    border-color: var(--text);
    box-shadow: 0 8px 32px rgba(14,15,20,0.2);
}
.mf-step--hub .mf-tag  { color: rgba(183,161,137,0.8); }
.mf-step--hub .mf-name { color: #fff; }
.mf-step--hub .mf-desc { color: rgba(255,255,255,0.4); }
.mf-step--sm {
    min-width: 140px;
    padding: 18px 18px;
}

.mf-icon {
    font-size: 1.4rem;
    display: block;
    margin-bottom: 10px;
}
.mf-tag {
    font-size: 0.5rem;
    letter-spacing: 0.28em;
    color: var(--accent);
    text-transform: uppercase;
    display: block;
    margin-bottom: 6px;
}
.mf-name {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text);
    letter-spacing: 0.01em;
    margin-bottom: 6px;
}
.mf-desc {
    font-size: 0.72rem;
    color: var(--gray-lt);
    line-height: 1.6;
}

/* ── Connector (linear) ───────────────────────────────────── */
.mf-conn {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 0 6px;
}
.mf-conn-line {
    width: 36px;
    height: 1px;
    background: linear-gradient(90deg, var(--border), var(--accent), var(--border));
}
.mf-conn-label {
    font-size: 0.44rem;
    letter-spacing: 0.2em;
    color: var(--accent);
    text-transform: uppercase;
    white-space: nowrap;
}

/* ── Fork connector (SVG) ─────────────────────────────────── */
.mf-conn--fork {
    flex-direction: row;
    align-items: center;
    padding: 0;
    align-self: stretch;
}
.mf-fork-svg {
    width: 56px;
    height: 100%;
    min-height: 200px;
    flex-shrink: 0;
}
.mf-conn--fork .mf-conn-label { display: none; }

/* HubSpot CRM ノード */
.mf-step--crm {
    border-color: rgba(255,122,0,0.25);
    background: rgba(255,122,0,0.03);
}
.mf-step--crm .mf-tag { color: #E07020; }

/* ── Fork outputs ─────────────────────────────────────────── */
.mf-outputs {
    display: flex;
    flex-direction: column;
    gap: 14px;
    flex-shrink: 0;
}

/* ── Body: 2-col layout ───────────────────────────────────── */
.mail-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.mail-body-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--text);
    letter-spacing: -0.01em;
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

/* ── Setup Steps ──────────────────────────────────────────── */
.mail-setup {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 36px 32px;
    box-shadow: var(--shadow);
}
.setup-steps {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0;
}
.setup-step {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}
.setup-step:last-child { border-bottom: none; padding-bottom: 0; }
.step-num {
    flex-shrink: 0;
    font-family: 'DM Serif Display', serif;
    font-style: italic;
    font-size: 1.1rem;
    color: var(--accent);
    line-height: 1.4;
    letter-spacing: -0.01em;
    min-width: 28px;
}
.step-text strong {
    display: block;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 4px;
    letter-spacing: 0.01em;
}
.step-text p {
    font-size: 0.76rem;
    color: var(--gray);
    line-height: 1.8;
}
.step-text code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.72rem;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 6px;
    color: var(--accent);
}

/* ── Includes ─────────────────────────────────────────────── */
.mail-includes {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 36px 32px;
}
.includes-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-bottom: 24px;
}
.inc-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}
.inc-item:last-child { border-bottom: none; }
.inc-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 2px;
}
.inc-item strong {
    display: block;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 4px;
    letter-spacing: 0.01em;
}
.inc-item p {
    font-size: 0.76rem;
    color: var(--gray);
    line-height: 1.8;
}
.inc-item code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.72rem;
    background: var(--border);
    border-radius: 4px;
    padding: 1px 6px;
    color: var(--accent);
}
.inc-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.inc-badge {
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: #1A5C38;
    background: rgba(45,159,93,0.08);
    border: 1px solid rgba(45,159,93,0.2);
    border-radius: 100px;
    padding: 4px 12px;
}

/* ================================================================
   RESPONSIVE
================================================================ */
@media (max-width: 1100px) {
    :root { --pad-x: 48px; }
    .hero-inner { grid-template-columns: 1fr; gap: 56px; }
    .int-network { width: 100%; max-width: 480px; }
    .hub-diagram { width: 100%; max-width: 680px; }
}
@media (max-width: 768px) {
    :root { --pad-x: 24px; }
    .fl-section { padding: 80px 0; }
    .fl-nav { display: none; }
    .hero-stats { flex-wrap: wrap; gap: 20px; }
    .hero-ctas { flex-direction: column; }
    .int-network { transform: scale(0.85); transform-origin: center top; height: 330px; }
    .hub-diagram { height: 400px; }
    .hub-node { width: 88px; font-size: 0.6rem; }
    .hub-core  { width: 110px; height: 110px; }
    .connect-panels { grid-template-columns: 1fr; gap: 16px; }
    .connect-arrow { width: auto; flex-direction: row; padding: 8px 0; }
    .connect-arrow-line { width: 48px; height: 1px; }
    .realtime-stats { grid-template-columns: 1fr; }
    .fl-cta-btns { flex-direction: column; align-items: center; }
    .trial-scope { grid-template-columns: 1fr; gap: 16px; }
    .trial-divider { padding: 0; }
    .voices-grid { grid-template-columns: 1fr; }
    .fl-footer-inner { flex-direction: column; gap: 16px; text-align: center; }
    /* Mail System */
    .mail-flow { gap: 0; }
    .mf-step { min-width: 120px; padding: 18px 14px; }
    .mf-step--sm { min-width: 120px; }
    .mf-fork-svg { width: 44px; height: 120px; }
    .mail-body { grid-template-columns: 1fr; gap: 20px; }
    .mail-sub { margin-bottom: 48px; }
}