/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #0a0a0a;
    --white: #ffffff;
    --orange: #FF6B00;
    --orange-light: #FF8C33;
    --orange-dark: #CC5500;
    --gray-100: #f5f5f5;
    --gray-200: #e0e0e0;
    --gray-400: #999999;
    --gray-600: #555555;
    --gray-800: #222222;

    --font-en: 'Inter', sans-serif;
    --font-ja: 'Noto Sans JP', sans-serif;

    --nav-h: 72px;
    --section-py: 120px;
    --container: 1200px;
    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-ja);
    background: var(--white);
    color: var(--black);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--orange); }

/* ===== CONTAINER ===== */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 40px;
}

/* ===== TYPOGRAPHY ===== */
.section-label {
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--orange);
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-en);
    font-size: clamp(40px, 5vw, 64px);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.02em;
    color: var(--black);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 100px;
    font-family: var(--font-en);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: all 0.3s var(--ease);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--orange);
    color: var(--white);
}
.btn-primary:hover {
    background: var(--orange-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 107, 0, 0.4);
}

.btn-ghost {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.3);
}
.btn-ghost:hover {
    border-color: var(--white);
    background: rgba(255,255,255,0.08);
}

/* ===== NAV ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: background 0.4s var(--ease), backdrop-filter 0.4s;
}

.nav.scrolled {
    background: rgba(10,10,10,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 40px;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-en);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--white);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    font-family: var(--font-en);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.2s;
}
.nav-links a:hover {
    color: var(--white);
}

.nav-cta {
    font-family: var(--font-ja);
    font-size: 13px;
    font-weight: 700;
    color: var(--white);
    background: var(--orange);
    padding: 10px 24px;
    border-radius: 100px;
    text-decoration: none;
    transition: all 0.3s var(--ease);
}
.nav-cta:hover {
    background: var(--orange-dark);
    transform: translateY(-1px);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    background: var(--black);
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,107,0,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,107,0,0.06) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

/* グロー */
.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255,107,0,0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 40px;
    padding-top: var(--nav-h);
}

.hero-eyebrow {
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--orange);
    margin-bottom: 32px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-bottom: 40px;
}

.hero-title-line {
    font-family: var(--font-en);
    font-size: clamp(64px, 10vw, 140px);
    font-weight: 900;
    line-height: 0.9;
    letter-spacing: -0.04em;
    color: var(--white);
    display: block;
    opacity: 0;
    transform: translateY(40px);
}
.hero-title-line:nth-child(1) { animation: fadeUp 0.8s var(--ease-out) 0.3s forwards; }
.hero-title-line:nth-child(2) { animation: fadeUp 0.8s var(--ease-out) 0.4s forwards; }
.hero-title-line:nth-child(3) { animation: fadeUp 0.8s var(--ease-out) 0.5s forwards; }

.hero-title-line.accent {
    color: var(--orange);
    -webkit-text-stroke: 0;
}

.hero-sub {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255,255,255,0.55);
    margin-bottom: 48px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s var(--ease-out) 0.6s forwards;
}

.hero-actions {
    display: flex;
    gap: 16px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s var(--ease-out) 0.7s forwards;
}

.hero-scroll {
    position: absolute;
    bottom: 48px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,0.3);
    font-family: var(--font-en);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.2em;
    opacity: 0;
    animation: fadeUp 1s var(--ease-out) 1.2s forwards;
}

.hero-scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, rgba(255,107,0,0.6), transparent);
    animation: scrollLine 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ===== STATEMENT ===== */
.statement {
    background: var(--white);
    padding: var(--section-py) 0;
    border-bottom: 1px solid var(--gray-200);
}

.statement-text {
    font-size: clamp(24px, 3vw, 44px);
    font-weight: 700;
    line-height: 1.6;
    letter-spacing: -0.01em;
    color: var(--black);
}

.statement-text em {
    font-style: normal;
    color: var(--orange);
}

/* ===== SERVICES ===== */
.services {
    background: var(--gray-100);
    padding: var(--section-py) 0;
}

.section-header {
    margin-bottom: 64px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
    cursor: default;
}

.service-card::before {
    content: attr(data-index);
    position: absolute;
    top: 24px;
    right: 28px;
    font-family: var(--font-en);
    font-size: 80px;
    font-weight: 900;
    color: var(--gray-100);
    line-height: 1;
    transition: color 0.4s;
    pointer-events: none;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 32px 64px rgba(0,0,0,0.1);
}

.service-card:hover::before {
    color: rgba(255,107,0,0.08);
}

.service-card-inner {
    padding: 48px;
}

.service-icon {
    width: 48px;
    height: 48px;
    color: var(--orange);
    margin-bottom: 24px;
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.service-desc {
    font-size: 14px;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 24px;
}

.service-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-list li {
    font-size: 13px;
    color: var(--gray-600);
    padding-left: 16px;
    position: relative;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--orange);
}

/* ===== MEMBERS ===== */
.members {
    background: var(--black);
    padding: var(--section-py) 0;
}

.members .section-title {
    color: var(--white);
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.member-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 20px;
    padding: 40px;
    transition: border-color 0.3s, transform 0.3s var(--ease);
}

.member-card:hover {
    border-color: var(--orange);
    transform: translateY(-4px);
}

.member-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--orange), var(--orange-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.member-avatar-inner {
    font-family: var(--font-en);
    font-size: 28px;
    font-weight: 800;
    color: var(--white);
}

.member-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 6px;
}

.member-role {
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--orange);
    margin-bottom: 16px;
}

.member-bio {
    font-size: 13px;
    line-height: 1.8;
    color: rgba(255,255,255,0.5);
}

/* ===== CONTACT ===== */
.contact {
    background: var(--white);
    padding: var(--section-py) 0;
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-title {
    font-family: var(--font-en);
    font-size: clamp(40px, 5vw, 64px);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.contact-desc {
    font-size: 15px;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 32px;
}

.contact-link {
    font-family: var(--font-en);
    font-size: 14px;
    font-weight: 600;
    color: var(--orange);
    text-decoration: none;
    border-bottom: 1px solid var(--orange);
    padding-bottom: 2px;
    transition: opacity 0.2s;
}
.contact-link:hover { opacity: 0.7; }

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 16px 20px;
    background: var(--gray-100);
    border: 1px solid transparent;
    border-radius: 12px;
    font-family: var(--font-ja);
    font-size: 14px;
    color: var(--black);
    outline: none;
    transition: border-color 0.2s, background 0.2s;
    appearance: none;
    -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--orange);
    background: var(--white);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

.form-group textarea {
    resize: vertical;
}

.btn-submit {
    background: var(--black);
    color: var(--white);
    border: none;
    padding: 18px 40px;
    font-size: 15px;
    font-family: var(--font-ja);
    font-weight: 700;
    width: 100%;
    justify-content: center;
    border-radius: 12px;
    cursor: pointer;
    gap: 12px;
    transition: background 0.3s, transform 0.2s;
}

.btn-submit svg {
    width: 18px;
    height: 18px;
}

.btn-submit:hover {
    background: var(--orange);
    transform: translateY(-2px);
}

.form-sent {
    text-align: center;
    font-size: 14px;
    color: var(--orange);
    font-weight: 700;
    display: none;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--black);
    padding: 48px 0;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-logo {
    font-family: var(--font-en);
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--white);
}

.footer-copy {
    font-size: 12px;
    color: rgba(255,255,255,0.3);
    font-family: var(--font-en);
}

.footer-nav {
    display: flex;
    gap: 32px;
}

.footer-nav a {
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: rgba(255,255,255,0.4);
    text-decoration: none;
    transition: color 0.2s;
}
.footer-nav a:hover { color: var(--white); }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    :root { --section-py: 80px; }

    .container { padding: 0 24px; }
    .nav-inner { padding: 0 24px; }
    .nav-links { display: none; }

    .services-grid { grid-template-columns: 1fr; }
    .members-grid { grid-template-columns: 1fr; }
    .contact-inner { grid-template-columns: 1fr; gap: 48px; }
    .footer-inner { flex-direction: column; gap: 24px; text-align: center; }

    .hero-content { padding: 0 24px; padding-top: var(--nav-h); }
    .hero-actions { flex-direction: column; }

    .service-card-inner { padding: 32px; }
    .service-card::before { font-size: 60px; }
}