/* ===========================
   CSS Variables
   =========================== */
*, *::before, *::after { box-sizing: border-box; }

:root {
    --c-bg:           #080c16;
    --c-surface:      #0e1424;
    --c-surface-2:    #141d30;
    --c-brand:        #e53935;
    --c-action:       #2f6df6;
    --c-action-dark:  #264fbb;
    --c-state:        #2d9d61;
    --c-warning:      #d98e04;
    --c-accent:       #e53935;
    --c-accent-dark:  #c62828;
    --c-accent-glow:  rgba(229, 57, 53, 0.18);
    --c-text-1:       #eaf0ff;
    --c-text-2:       #8a9bc0;
    --c-text-3:       #4d5e7a;
    --c-border:       rgba(255, 255, 255, 0.07);
    --radius-sm:      8px;
    --radius-md:      14px;
    --radius-lg:      22px;
    --shadow-card:    0 8px 40px rgba(0, 0, 0, 0.55);
    --ease:           cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================
   Base
   =========================== */
body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--c-text-1);
    line-height: 1.8;
    background-color: var(--c-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
}

/* ===========================
   Header
   =========================== */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(8, 12, 22, 0.82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--c-border);
    padding: 0;
}

/* ===========================
   Header (continued)
   =========================== */
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    margin: 0;
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.logo a {
    text-decoration: none;
    color: var(--c-text-1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo a::before {
    content: '';
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background-color: var(--c-accent);
    box-shadow: 0 0 8px var(--c-accent);
    animation: pulse-dot 2.4s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(0.75); }
}

.global-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.global-nav a {
    text-decoration: none;
    color: var(--c-text-2);
    font-weight: 500;
    font-size: 14px;
    padding: 6px 14px;
    border-radius: 6px;
    transition: all 0.22s var(--ease);
}

.global-nav a:hover {
    color: var(--c-text-1);
    background-color: rgba(255, 255, 255, 0.07);
}

.global-nav a[aria-current="page"] {
    color: var(--c-text-1);
    background-color: rgba(255, 255, 255, 0.1);
}

/* ===========================
   Hero
   =========================== */
.hero {
    position: relative;
    overflow: hidden;
    padding: 150px 0 130px;
    color: var(--c-text-1);
    background-color: var(--c-bg);
}

.hero-bg-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
    opacity: 0.22;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(8, 12, 22, 0.35) 0%,
        rgba(8, 12, 22, 0.60) 55%,
        rgba(8, 12, 22, 1.00) 100%
    );
    z-index: 2;
}

.hero::after {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(229, 57, 53, 0.10) 0%, transparent 70%);
    z-index: 2;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
}

.hero-text {
    max-width: 800px;
    margin: 0 auto;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--c-accent-glow);
    border: 1px solid rgba(229, 57, 53, 0.28);
    color: #ef9a9a;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 32px;
}

.hero h2 {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--c-text-1);
    margin: 0 0 24px;
}

.hero p {
    font-size: 1.1rem;
    color: var(--c-text-2);
    margin: 0 0 44px;
    line-height: 1.9;
}

.hero-keypoints {
    margin: 0 auto 30px;
    max-width: 760px;
    list-style: none;
    padding: 0;
    display: grid;
    gap: 8px;
    text-align: center;
}

.hero-keypoints li {
    margin: 0;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--c-border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--c-text-2);
    font-size: 14px;
    line-height: 1.7;
}

.hero-keypoints strong {
    color: var(--c-text-1);
    font-weight: 600;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--c-accent);
    color: #fff;
    padding: 14px 38px;
    text-decoration: none;
    border-radius: 100px;
    font-weight: 700;
    font-size: 16px;
    letter-spacing: 0.01em;
    transition: all 0.28s var(--ease);
    box-shadow: 0 4px 24px rgba(229, 57, 53, 0.42),
                inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.btn-primary:hover {
    background: var(--c-accent-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 36px rgba(229, 57, 53, 0.55),
                inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--c-border);
    color: var(--c-text-1);
    padding: 12px 20px;
    text-decoration: none;
    border-radius: 100px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s var(--ease);
    background: transparent;
}

.btn-secondary:hover {
    border-color: rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.04);
}

.note {
    font-size: 13px;
    color: var(--c-text-3);
    margin: 0;
}

.flow-strip {
    padding: 28px 0 22px;
    border-top: 1px solid var(--c-border);
    border-bottom: 1px solid var(--c-border);
    background: var(--c-surface);
}

.flow-strip-inner {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    max-width: 760px;
    margin: 0 auto;
}

.flow-item {
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    padding: 16px;
    text-align: center;
    transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.flow-item:hover {
    border-color: rgba(255, 255, 255, 0.16);
    transform: translateY(-2px);
}

.flow-item h2 {
    margin: 8px 0 8px;
    font-size: 17px;
    color: var(--c-text-1);
}

.flow-item p {
    margin: 0;
    color: var(--c-text-2);
    font-size: 14px;
    line-height: 1.7;
}

.flow-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 4px 10px;
}

.flow-step.is-action {
    color: #dbe6ff;
    background: rgba(47, 109, 246, 0.3);
    border: 1px solid rgba(47, 109, 246, 0.6);
}

.flow-step.is-state {
    color: #d8f5e5;
    background: rgba(45, 157, 97, 0.28);
    border: 1px solid rgba(45, 157, 97, 0.58);
}

.flow-step.is-warning {
    color: #ffe7ba;
    background: rgba(217, 142, 4, 0.28);
    border: 1px solid rgba(217, 142, 4, 0.58);
}

.quick-check {
    padding: 46px 0 20px;
}

.quick-check-title {
    margin: 0 0 14px;
    font-size: 24px;
    color: var(--c-text-1);
    letter-spacing: -0.02em;
}

.quick-check-list {
    margin: 0;
    padding-left: 22px;
    color: var(--c-text-2);
}

.quick-check-list li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.install-panel {
    margin-top: 70px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    background: var(--c-surface-2);
    padding: 24px;
    text-align: center;
}

.install-panel h2 {
    margin: 0 0 10px;
    font-size: 22px;
    color: var(--c-text-1);
}

.install-panel p {
    margin: 0;
    color: var(--c-text-2);
    font-size: 15px;
    line-height: 1.8;
}

.install-actions {
    margin-top: 18px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

/* ===========================
   Features
   =========================== */
.features {
    padding: 110px 0 90px;
    background: var(--c-bg);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-eyebrow {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--c-accent);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--c-text-1);
    margin: 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 72px;
    margin-bottom: 110px;
}

.feature-item:last-child {
    margin-bottom: 0;
}

.feature-reverse {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
}

.feature-number {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--c-accent);
    margin-bottom: 16px;
    opacity: 0.75;
}

.feature-text h3 {
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--c-text-1);
    margin: 0 0 16px;
    line-height: 1.35;
}

.feature-text p {
    font-size: 15px;
    color: var(--c-text-2);
    line-height: 1.9;
    margin: 0;
}

.feature-image {
    flex: 1;
}

.feature-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card), 0 0 0 1px var(--c-border);
    transition: transform 0.38s var(--ease), box-shadow 0.38s var(--ease);
}

.feature-image img:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.65), 0 0 0 1px rgba(229, 57, 53, 0.2);
}

/* ===========================
   Footer
   =========================== */
footer {
    background-color: var(--c-surface);
    border-top: 1px solid var(--c-border);
    padding: 52px 0 32px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 48px;
    margin-bottom: 44px;
}

.footer-brand {
    max-width: 260px;
}

.footer-logo {
    font-size: 17px;
    font-weight: 700;
    color: var(--c-text-1);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    text-decoration: none;
}

.footer-logo::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--c-accent);
    flex-shrink: 0;
}

.footer-brand p {
    font-size: 13px;
    color: var(--c-text-3);
    margin: 0;
    line-height: 1.7;
}

.footer-nav-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-nav-title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--c-text-3);
    margin-bottom: 10px;
}

.footer-nav-group a {
    color: var(--c-text-2);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
    padding: 2px 0;
}

.footer-nav-group a:hover {
    color: var(--c-text-1);
}

.footer-bottom {
    border-top: 1px solid var(--c-border);
    padding-top: 24px;
    font-size: 13px;
    color: var(--c-text-3);
    text-align: center;
}

/* ===========================
   Inner pages (FAQ / Terms)
   =========================== */
.faq-page,
.terms-page {
    background-color: var(--c-bg);
}

.page-hero {
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    padding: 64px 0 56px;
    text-align: center;
}

.page-eyebrow {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--c-accent);
    margin-bottom: 10px;
}

.page-title {
    font-size: clamp(1.7rem, 3vw, 2.3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--c-text-1);
    margin: 0;
}

.page-content {
    max-width: 760px;
    margin: 0 auto;
    padding: 72px 24px 88px;
}

/* FAQ */
.faq-page .page-content {
    max-width: 980px;
}

.faq-hero-lead {
    margin: 16px auto 0;
    max-width: 760px;
    color: var(--c-text-2);
    font-size: 15px;
}

.faq-keypoints {
    margin: 24px auto 0;
    max-width: 760px;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
    text-align: left;
}

.faq-keypoints li {
    margin: 0;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--c-border);
    color: var(--c-text-2);
    background: rgba(255, 255, 255, 0.02);
    line-height: 1.7;
}

.faq-keypoints strong {
    color: var(--c-text-1);
    font-weight: 600;
}

.intent-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 52px;
}

.intent-card {
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    background: var(--c-surface);
    padding: 18px;
    min-height: 170px;
    transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.intent-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.16);
}

.intent-card h2 {
    margin: 8px 0 8px;
    font-size: 18px;
    line-height: 1.4;
    color: var(--c-text-1);
}

.intent-card p {
    margin: 0;
    color: var(--c-text-2);
    font-size: 14px;
    line-height: 1.7;
    overflow-wrap: anywhere;
}

.intent-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 4px 10px;
}

.intent-badge.is-action {
    color: #dbe6ff;
    background: rgba(47, 109, 246, 0.3);
    border: 1px solid rgba(47, 109, 246, 0.6);
}

.intent-badge.is-state {
    color: #d8f5e5;
    background: rgba(45, 157, 97, 0.28);
    border: 1px solid rgba(45, 157, 97, 0.58);
}

.intent-badge.is-warning {
    color: #ffe7ba;
    background: rgba(217, 142, 4, 0.28);
    border: 1px solid rgba(217, 142, 4, 0.58);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.faq-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-section-title {
    font-size: 18px;
    margin: 0 0 6px;
    color: var(--c-text-1);
    letter-spacing: -0.01em;
}

.faq-item {
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    background: var(--c-surface);
    padding: 22px 24px;
}

.faq-item:last-of-type {
    border-bottom: 1px solid var(--c-border);
}

.question {
    font-size: 16px;
    font-weight: 600;
    color: var(--c-text-1);
    margin: 0 0 12px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    line-height: 1.55;
}

.question::before {
    content: "Q";
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    background: var(--c-brand);
    color: #fff;
    border-radius: 7px;
    font-size: 12px;
    font-weight: 700;
    margin-top: 2px;
}

.answer {
    font-size: 15px;
    color: var(--c-text-2);
    line-height: 1.9;
    padding-left: 0;
    margin: 0;
    overflow-wrap: anywhere;
}

.answer p {
    margin: 0 0 10px;
}

.answer p:last-child {
    margin-bottom: 0;
}

.answer ol,
.answer ul {
    margin: 0;
    padding-left: 22px;
}

.support-panel {
    margin-top: 52px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 24px;
    background: var(--c-surface-2);
}

.support-panel h2 {
    margin: 0 0 10px;
    font-size: 18px;
    color: var(--c-text-1);
}

.support-panel p {
    margin: 0;
    color: var(--c-text-2);
    font-size: 14px;
    line-height: 1.8;
}

.support-actions {
    margin-top: 18px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.faq-page .btn-primary {
    background: var(--c-action);
    box-shadow: 0 4px 22px rgba(47, 109, 246, 0.45),
                inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.faq-page .btn-primary:hover {
    background: var(--c-action-dark);
    box-shadow: 0 10px 34px rgba(47, 109, 246, 0.58),
                inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.btn-center {
    text-align: center;
    margin-top: 64px;
}

/* Terms */
.terms-content {
    max-width: 760px;
    margin: 0 auto;
    padding: 72px 24px 88px;
}

.terms-hero-lead {
    margin: 16px auto 0;
    max-width: 760px;
    color: var(--c-text-2);
    font-size: 15px;
}

.terms-important {
    margin-bottom: 24px;
    border: 1px solid rgba(217, 142, 4, 0.45);
    border-radius: var(--radius-md);
    background: rgba(217, 142, 4, 0.1);
    padding: 18px;
}

.terms-important-title {
    margin: 0 0 10px;
    font-size: 17px;
    color: #ffe7ba;
}

.terms-important ul {
    margin: 0;
    padding-left: 20px;
}

.terms-important li {
    color: #ffefcf;
    margin-bottom: 6px;
    line-height: 1.75;
}

.terms-toc {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 34px;
}

.terms-toc a {
    text-decoration: none;
    color: var(--c-text-2);
    font-size: 14px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    transition: all 0.2s var(--ease);
}

.terms-toc a:hover {
    color: var(--c-text-1);
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.03);
}

.terms-enacted {
    text-align: right;
    margin-top: 48px;
    color: var(--c-text-3);
    font-size: 14px;
}

.terms-actions {
    text-align: center;
    margin-top: 56px;
}

.terms-content h1 {
    font-size: 1.9rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--c-text-1);
    margin: 0 0 48px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--c-border);
}

.terms-content h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--c-text-1);
    margin: 44px 0 14px;
    padding: 0 0 0 13px;
    border-left: 3px solid var(--c-accent);
    background: none;
}

.terms-content p {
    font-size: 15px;
    color: var(--c-text-2);
    margin-bottom: 16px;
    text-align: justify;
    line-height: 1.9;
}

.terms-content ol {
    margin-bottom: 20px;
    padding-left: 22px;
}

.terms-content li {
    font-size: 15px;
    color: var(--c-text-2);
    margin-bottom: 10px;
    line-height: 1.85;
}

.terms-content strong {
    color: var(--c-text-1);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 768px) {
    .feature-item,
    .feature-reverse {
        flex-direction: column;
        gap: 36px;
    }

    .feature-text {
        text-align: center;
    }

    .footer-inner {
        flex-direction: column;
        gap: 32px;
    }

    .hero {
        padding: 110px 0 90px;
    }

    .intent-grid {
        grid-template-columns: 1fr;
    }

    .faq-item {
        padding: 18px;
    }

    .flow-strip-inner,
    .terms-toc {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .header-container {
        flex-direction: column;
        height: auto;
        padding: 14px 0;
        gap: 12px;
    }

    .global-nav a {
        font-size: 13px;
        padding: 5px 10px;
    }
}