*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --black: #000;
    --white: #fff;
    --gray-light: #f7f7f7;
    --g200: #e5e5e5;
    --g400: #999;
    --g500: #666;
    --gray-dark: #444;
    --g700: #333;
    --g900: #111;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --ease: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
::selection { background: var(--black); color: var(--white); }
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-left.visible {
    opacity: 1;
    transform: translateX(0);
}
.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-right.visible {
    opacity: 1;
    transform: translateX(0);
}
.reveal-scale {
    opacity: 0;
    transform: scale(0.92);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-scale.visible {
    opacity: 1;
    transform: scale(1);
}
.hero > * {
    animation: heroFadeIn 0.8s ease forwards;
    opacity: 0;
}
.hero-label { animation-delay: 0.1s; }
.hero-title { animation-delay: 0.25s; }
.hero-sub { animation-delay: 0.4s; }
.hero-desc { animation-delay: 0.55s; }
.hero-btns { animation-delay: 0.7s; }
.hero-scroll { animation-delay: 1.2s; }

@keyframes heroFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.service-card {
    will-change: transform;
}
.portfolio-thumb {
    overflow: hidden;
}
.portfolio-thumb img {
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.portfolio-item:hover .portfolio-thumb img {
    transform: scale(1.08);
}
.portfolio-overlay span {
    transform: translateY(6px);
    transition: transform 0.4s ease, opacity 0.4s ease;
}
.portfolio-item:hover .portfolio-overlay span {
    transform: translateY(0);
}
.navbar.scrolled .nav-container {
    height: 56px;
}
.navbar.scrolled .logo {
    font-size: 1.3rem;
}
section {
    transition: background 0.3s ease;
}

a { text-decoration: none; color: inherit; }

.container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
}
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--g200);
}
.nav-container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    font-size: 1.6rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    text-transform: lowercase;
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--g500);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color var(--ease);
}
.nav-links a:hover { color: var(--black); }
.menu-toggle {
    display: none;
    background: none; border: none;
    font-size: 1.5rem; cursor: pointer;
    color: var(--black);
}
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 64px 24px 80px;
}
.hero-inner {
    max-width: 820px;
    margin: 0 auto;
    width: 100%;
}
.hero-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--g400);
    margin-bottom: 24px;
    text-transform: uppercase;
}
.hero-title {
    font-size: clamp(5rem, 14vw, 10rem);
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.05em;
    margin-bottom: 8px;
}
.hero-sub {
    font-size: clamp(1.3rem, 3vw, 2rem);
    font-weight: 500;
    color: var(--g500);
    margin-bottom: 20px;
}
.hero-desc {
    font-size: 1.05rem;
    max-width: 520px;
    color: var(--g500);
    margin-bottom: 36px;
    line-height: 1.7;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    letter-spacing: 3px;
    color: var(--g400);
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%,100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}
.btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 32px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 2px solid var(--black);
    background: transparent;
    cursor: pointer;
    font-family: var(--font);
    transition: all var(--ease);
}
.btn-primary { background: var(--black); color: var(--white); }
.btn-primary:hover { background: transparent; color: var(--black); }
.btn-outline { color: var(--black); }
.btn-outline:hover { background: var(--black); color: var(--white); }
section { padding: 100px 0; }
.section-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--g400);
    margin-bottom: 12px;
    text-transform: uppercase;
}
.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 48px;
}
.outline {
    -webkit-text-stroke: 1.5px var(--black);
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}
.services { background: var(--gray-light); }
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-card {
    background: var(--white);
    padding: 48px 36px;
    border: 1px solid var(--g200);
    transition: all var(--ease);
}
.service-card:hover {
    border-color: var(--black);
    transform: translateY(-4px);
}
.service-number {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--g400);
    letter-spacing: 2px;
    display: block;
    margin-bottom: 16px;
}
.service-card h3 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}
.service-card p {
    font-size: 0.9rem;
    color: var(--g500);
    line-height: 1.7;
}
.tools-content { max-width: 700px; }

.tools-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 32px;
}
.tools-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 40px;
}
.tools-list span {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--g700);
    padding: 10px 0;
    border-bottom: 1px solid var(--g200);
}
.tools-quote {
    font-size: 1.05rem;
    font-style: italic;
    color: var(--g500);
    line-height: 1.7;
    padding: 24px 0;
    border-top: 2px solid var(--black);
    max-width: 600px;
}
.portfolio { background: var(--gray-light); }
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.portfolio-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--g200);
}
.portfolio-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}
.portfolio-item:hover .portfolio-thumb img { transform: scale(1.05); }
.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--ease);
}
.portfolio-item:hover .portfolio-overlay { opacity: 1; }
.portfolio-overlay span {
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    border-bottom: 1px solid var(--white);
    padding-bottom: 4px;
}
.portfolio-more { margin-top: 40px; text-align: center; }
.collab-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 680px;
}
.collab-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    border: 1px solid var(--g200);
    transition: all var(--ease);
}
.collab-card:hover { border-color: var(--black); }
.collab-avatar {
    width: 64px; height: 64px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--g200);
}
.collab-avatar img { width: 100%; height: 100%; object-fit: cover; }
.collab-info h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 2px; }
.collab-info span { font-size: 0.85rem; color: var(--g400); }
.reviews { background: var(--white); }
.rv-wrap { max-width: 700px; margin-bottom: 40px; }
.rv-card { padding: 20px 0; border-bottom: 1px solid var(--g200); }
.rv-card:last-child { border-bottom: none; }
.rv-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.rv-name { font-weight: 700; font-size: .9rem; }
.rv-date { font-size: .75rem; color: #999; }
.rv-stars { font-size: 1.1rem; letter-spacing: 2px; color: #ccc; cursor: pointer; }
.rv-stars .on { color: #000; }
.rv-text { font-size: .9rem; line-height: 1.6; color: var(--g500); margin-bottom: 6px; }
.rv-reply { margin-left: 20px; padding: 12px 16px; background: var(--gray-light); border-left: 2px solid var(--black); font-size: .85rem; color: var(--gray-dark); }
.rv-reply strong { font-weight: 600; color: var(--black); }
.rv-form { max-width: 500px; }
.rv-empty { font-style: italic; font-size: .9rem; color: var(--g400); }

.modal { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center; }
.modal-bg { position: absolute; inset: 0; background: rgba(0,0,0,.6); }
.modal-box { position: relative; background: var(--white); width: 100%; max-width: 380px; padding: 40px 32px 32px; }
.modal-x { position: absolute; top: 12px; right: 16px; background: none; border: none; font-size: 1.2rem; cursor: pointer; color: #999; transition: color .3s; font-family: var(--font); }
.modal-x:hover { color: #000; }
.modal-tabs { display: flex; gap: 0; margin-bottom: 24px; border-bottom: 1px solid var(--g200); }
.mtab { flex: 1; padding: 10px; background: none; border: none; font-family: var(--font); font-size: .85rem; font-weight: 600; color: var(--g400); cursor: pointer; transition: all .3s; border-bottom: 2px solid transparent; }
.mtab.ac { color: var(--black); border-bottom-color: var(--black); }
.modal-in { width: 100%; padding: 12px 14px; border: 2px solid var(--g200); font-family: var(--font); font-size: .9rem; outline: none; margin-bottom: 12px; transition: border-color .3s; }
.modal-in:focus { border-color: var(--black); }
.modal-err { font-size: .8rem; color: #cc0000; min-height: 20px; margin-top: 8px; text-align: center; }
#loginForm, #registerForm { display: flex; flex-direction: column; }
.contact { text-align: center; }
.contact-content { max-width: 600px; margin: 0 auto; }
.contact-content h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 40px;
}
.contact-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}
.contact-social {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
    justify-content: center;
}
.contact-social a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--g500);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color var(--ease);
}
.contact-social a:hover { color: var(--black); }
.footer { padding: 24px; border-top: 1px solid var(--g200); }
.footer-container {
    max-width: 1160px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-copy, .footer-top { font-size: 0.8rem; color: var(--g400); }
.footer-top { transition: color var(--ease); }
.footer-top:hover { color: var(--black); }

@media (max-width: 1024px) {
    .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .menu-toggle { display: block; }
    .nav-links.active {
        display: flex; flex-direction: column;
        position: absolute; top: 64px; left: 0; right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--g200);
        padding: 20px 24px; gap: 16px; align-items: flex-start;
    }
    .services-grid { grid-template-columns: 1fr; }
    .portfolio-grid { grid-template-columns: 1fr; }
    .collab-grid { grid-template-columns: 1fr; }
    section { padding: 64px 0; }
    .footer-container { flex-direction: column; gap: 8px; text-align: center; }
    .hero-title { font-size: 4rem; }
    .hero-btns { flex-direction: column; }
    .hero-btns .btn { width: 100%; justify-content: center; }
}