/* ========================================
   大神出海 Dacern Overseas — Design System
   ======================================== */

/* --- CSS Variables --- */
:root {
    --color-bg-primary: #000000;
    --color-bg-secondary: #0a0a0a;
    --color-bg-tertiary: #141414;
    --color-bg-card: #111111;
    --color-bg-card-hover: #1a1a1a;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(255, 255, 255, 0.12);

    --color-accent: #dc2626;
    --color-accent-light: #ef4444;
    --color-accent-dark: #b91c1c;
    --color-accent-glow: rgba(220, 38, 38, 0.12);

    --color-blue: #3b82f6;
    --color-blue-light: #60a5fa;
    --color-teal: #14b8a6;
    --color-teal-light: #2dd4bf;
    --color-purple: #8b5cf6;
    --color-rose: #f43f5e;

    --color-text-primary: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;

    --font-en: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'WenQuanYi Micro Hei', system-ui, -apple-system, sans-serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 60px var(--color-accent-glow);

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --max-width: 1200px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-cn);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-cn);
    font-weight: 700;
    line-height: 1.3;
}

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

.section-header__tag {
    display: inline-block;
    font-family: var(--font-en);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--color-accent);
    background: var(--color-accent-glow);
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 16px;
    border: 1px solid rgba(220, 38, 38, 0.25);
}

.section-header__title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 900;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.section-header__desc {
    font-size: 17px;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-cn);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #0a0a0a;
    box-shadow: 0 4px 20px rgba(220, 38, 38, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(220, 38, 38, 0.45);
}

.btn--outline {
    background: transparent;
    color: var(--color-text-primary);
    border: 1.5px solid var(--color-border-light);
}

.btn--outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: var(--color-accent-glow);
}

.btn--sm {
    padding: 10px 24px;
    font-size: 14px;
}

.btn--full {
    width: 100%;
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-normal);
}

.nav--scrolled {
    background: rgba(6, 11, 20, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 0;
}

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

.nav__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.nav__logo-icon {
    width: auto;
    height: 52px;
    border-radius: 4px;
    object-fit: contain;
    flex-shrink: 0;
}

.nav__logo-text {
    font-size: 20px;
    font-weight: 800;
    font-family: var(--font-cn);
    color: var(--color-text-primary);
}

.nav__logo-sub {
    font-size: 11px;
    font-family: var(--font-en);
    color: var(--color-text-muted);
    letter-spacing: 1px;
    display: block;
}

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

.nav__link {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav__link:hover {
    color: var(--color-text-primary);
    background: rgba(255,255,255,0.05);
}

.nav__link--cta {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #0a0a0a !important;
    font-weight: 600;
    margin-left: 8px;
}

.nav__link--cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.nav__lang {
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 700;
    font-family: var(--font-en);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-left: 8px;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.nav__lang:hover {
    color: var(--color-text-primary);
    border-color: var(--color-accent);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-normal);
    border-radius: 2px;
}

.nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

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

.hero__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
}

.hero__glow--1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-accent-glow), transparent);
    top: -200px;
    right: -200px;
    animation: float 8s ease-in-out infinite;
}

.hero__glow--2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(220, 38, 38, 0.12), transparent);
    bottom: -100px;
    left: -100px;
    animation: float 6s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.1); }
}

.hero__particles {
    position: absolute;
    inset: 0;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 50%;
    opacity: 0;
    animation: particleFade 3s ease-in-out infinite;
}

@keyframes particleFade {
    0%, 100% { opacity: 0; transform: translateY(0); }
    50% { opacity: 0.6; transform: translateY(-20px); }
}

.hero__inner {
    position: relative;
    text-align: center;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-en);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: var(--color-accent);
    background: var(--color-accent-glow);
    padding: 8px 20px;
    border-radius: 24px;
    margin-bottom: 24px;
    border: 1px solid rgba(220, 38, 38, 0.2);
    animation: fadeInUp 0.8s ease;
}

.hero__badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero__title {
    font-size: clamp(36px, 7vw, 72px);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero__title-highlight {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: clamp(15px, 2vw, 18px);
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto 36px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero__actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero__stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero__stat {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px 16px;
    text-align: center;
}

.hero__stat-num {
    display: block;
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 800;
    font-family: var(--font-en);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}

.hero__stat-label {
    font-size: 13px;
    color: var(--color-text-muted);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Strengths --- */
.strengths {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.strengths__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.strength-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.strength-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.strength-card:hover {
    transform: translateY(-4px);
    border-color: rgba(220, 38, 38, 0.3);
    box-shadow: var(--shadow-glow);
}

.strength-card:hover::before {
    opacity: 1;
}

.strength-card__icon {
    width: 40px;
    height: 40px;
    color: var(--color-accent);
    margin-bottom: 16px;
    flex-shrink: 0;
}

.strength-card__title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.strength-card__desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --- Services --- */
.services {
    padding: 100px 0;
}

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

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(220, 38, 38, 0.25);
    box-shadow: var(--shadow-lg);
    background: var(--color-bg-card-hover);
}

.service-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.service-card__num {
    font-family: var(--font-en);
    font-size: 48px;
    font-weight: 900;
    color: rgba(255,255,255,0.04);
}

.service-card__icon {
    width: 36px;
    height: 36px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.service-card__title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.service-card__desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    flex: 1;
}

.service-card__features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 24px;
}

.service-card__features li {
    font-size: 13px;
    color: var(--color-text-secondary);
    padding-left: 18px;
    position: relative;
}

.service-card__features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

.service-card__link {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent);
    transition: all var(--transition-fast);
    margin-top: auto;
}

.service-card__link:hover {
    color: var(--color-accent-light);
    gap: 8px;
}

/* --- Solutions --- */
.solutions {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.formula-banner {
    background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-bg-card));
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 48px;
    margin-bottom: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    flex-wrap: wrap;
}

.formula-banner__label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.formula-banner__formula {
    font-size: clamp(24px, 4vw, 42px);
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.formula-banner__desc {
    color: var(--color-text-secondary);
    font-size: 15px;
}

.formula-banner__stats {
    display: flex;
    gap: 32px;
}

.formula-banner__stat {
    text-align: center;
    background: rgba(0,0,0,0.3);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    border: 1px solid var(--color-border);
}

.formula-banner__num {
    display: block;
    font-family: var(--font-en);
    font-size: 28px;
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.formula-banner__stat span:last-child {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* Process */
.process {
    margin-bottom: 64px;
}

.process__title {
    text-align: center;
    font-size: 22px;
    margin-bottom: 40px;
}

.process__steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.process__step {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    transition: all var(--transition-normal);
}

.process__step:hover {
    transform: translateY(-4px);
    border-color: rgba(220, 38, 38, 0.3);
}

.process__step-num {
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.process__step-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.process__step h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}

.process__step p {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.process__arrow {
    font-size: 24px;
    color: var(--color-accent);
    font-weight: 700;
}

/* Cost Breakdown */
.cost-breakdown {
    margin-bottom: 64px;
}

.cost-breakdown__title {
    text-align: center;
    font-size: 24px;
    margin-bottom: 8px;
}

.cost-breakdown__subtitle {
    text-align: center;
    color: var(--color-accent);
    font-size: 15px;
    margin-bottom: 40px;
}

.cost-breakdown__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.cost-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition-normal);
}

.cost-card:hover {
    transform: translateY(-4px);
    border-color: rgba(220, 38, 38, 0.25);
}

.cost-card__icon {
    font-size: 28px;
    margin-bottom: 12px;
}

.cost-card h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cost-card ul {
    margin-bottom: 16px;
}

.cost-card li {
    font-size: 13px;
    color: var(--color-text-secondary);
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
}

.cost-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.cost-card strong {
    color: var(--color-accent);
}

.cost-card__note {
    font-size: 12px;
    color: var(--color-text-muted);
    font-style: italic;
    border-top: 1px solid var(--color-border);
    padding-top: 12px;
}

/* Why Cheap */
.why-cheap__title {
    text-align: center;
    font-size: 22px;
    margin-bottom: 32px;
}

.why-cheap__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.why-cheap__item {
    text-align: center;
    padding: 32px 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.why-cheap__item:hover {
    border-color: rgba(220, 38, 38, 0.25);
}

.why-cheap__icon {
    font-size: 40px;
    display: block;
    margin-bottom: 16px;
}

.why-cheap__item h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.why-cheap__item p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* --- Pricing --- */
.pricing {
    padding: 100px 0;
}

.cooperation-models {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.coop-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    position: relative;
}

.coop-card:hover {
    transform: translateY(-4px);
}

.coop-card--featured {
    border-color: rgba(220, 38, 38, 0.4);
    background: linear-gradient(180deg, rgba(220,38,38,0.08), var(--color-bg-card));
    box-shadow: var(--shadow-glow);
    transform: scale(1.03);
}

.coop-card--featured:hover {
    transform: scale(1.03) translateY(-4px);
}

.coop-card__tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 12px;
    margin-bottom: 16px;
    background: rgba(255,255,255,0.05);
    color: var(--color-text-muted);
    width: fit-content;
}

.coop-card__tag--hot {
    background: rgba(244, 63, 94, 0.15);
    color: var(--color-rose);
}

.coop-card__title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.coop-card__desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 16px;
}

.coop-card__duration {
    font-size: 13px;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 20px;
    padding: 8px 16px;
    background: var(--color-accent-glow);
    border-radius: var(--radius-sm);
    text-align: center;
}

/* Pricing Table */
.pricing-table-wrapper {
    margin-bottom: 48px;
}

.pricing-table__title {
    text-align: center;
    font-size: 22px;
    margin-bottom: 24px;
}

.pricing-table {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.pricing-table table {
    width: 100%;
    border-collapse: collapse;
}

.pricing-table thead {
    background: var(--color-bg-tertiary);
}

.pricing-table th {
    padding: 16px 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent);
    text-align: left;
}

.pricing-table td {
    padding: 14px 20px;
    font-size: 14px;
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border);
}

.pricing-table tbody tr:hover {
    background: rgba(255,255,255,0.02);
}

.pricing-table td strong {
    color: var(--color-text-primary);
}

/* Asset Promise */
.asset-promise {
    background: linear-gradient(135deg, rgba(220,38,38,0.07), rgba(239,68,68,0.07));
    border: 1px solid rgba(220, 38, 38, 0.2);
    border-radius: var(--radius-xl);
    padding: 36px 40px;
    display: flex;
    gap: 24px;
    align-items: center;
}

.asset-promise__icon {
    font-size: 48px;
    flex-shrink: 0;
}

.asset-promise__content h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.asset-promise__content p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.asset-promise__content strong {
    color: var(--color-accent);
}

/* --- Seeding Packages Pricing --- */
.seeding-pricing {
    margin-bottom: 64px;
}

.seeding-pricing__title {
    text-align: center;
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 8px;
}

.seeding-pricing__subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 14px;
    margin-bottom: 40px;
}

.seeding-pricing__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.seed-plan {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.seed-plan:hover {
    transform: translateY(-6px);
    border-color: rgba(220, 38, 38, 0.3);
    box-shadow: var(--shadow-lg);
}

.seed-plan--featured {
    border-color: rgba(220, 38, 38, 0.4);
    background: linear-gradient(180deg, rgba(220,38,38,0.06), var(--color-bg-card));
    box-shadow: 0 0 60px rgba(220, 38, 38, 0.08);
    transform: scale(1.03);
}

.seed-plan--featured:hover {
    transform: scale(1.03) translateY(-6px);
}

.seed-plan--addon {
    border-style: dashed;
    border-color: rgba(255, 255, 255, 0.15);
    background: linear-gradient(180deg, rgba(255,255,255,0.02), var(--color-bg-card));
}

.seed-plan__ribbon {
    position: absolute;
    top: 16px;
    right: -30px;
    background: var(--color-accent);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 36px;
    transform: rotate(45deg);
    z-index: 1;
}

.seed-plan__header {
    margin-bottom: 20px;
}

.seed-plan__badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 4px 12px;
    border-radius: 10px;
    margin-bottom: 10px;
    background: rgba(255,255,255,0.06);
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

.seed-plan__badge--hot {
    background: rgba(220, 38, 38, 0.15);
    color: var(--color-accent);
}

.seed-plan__badge--premium {
    background: rgba(220, 38, 38, 0.1);
    color: var(--color-accent-light);
}

.seed-plan__badge--addon {
    background: rgba(255,255,255,0.04);
    color: var(--color-text-muted);
    border: 1px dashed rgba(255,255,255,0.1);
}

.seed-plan h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.seed-plan__subtitle {
    font-size: 13px;
    color: var(--color-text-muted);
}

.seed-plan__price {
    text-align: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 16px;
}

.seed-plan__currency {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-secondary);
    vertical-align: top;
}

.seed-plan__amount {
    font-size: 42px;
    font-weight: 900;
    font-family: var(--font-en);
    color: var(--color-text-primary);
    line-height: 1;
}

.seed-plan__period {
    font-size: 14px;
    color: var(--color-text-muted);
}

.seed-plan__volume {
    text-align: center;
    margin-bottom: 12px;
}

.seed-plan__volume-num {
    display: block;
    font-size: 28px;
    font-weight: 800;
    font-family: var(--font-en);
    color: var(--color-accent);
}

.seed-plan__volume-label {
    font-size: 13px;
    color: var(--color-text-muted);
}

.seed-plan__accounts {
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    padding: 8px;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-sm);
}

.seed-plan__features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 24px;
    flex: 1;
}

.seed-plan__features li {
    font-size: 12px;
    color: var(--color-text-muted);
    padding-left: 16px;
    position: relative;
    line-height: 1.5;
}

.seed-plan__features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
    font-size: 10px;
}

.seeding-pricing__note {
    display: flex;
    align-items: center;
    gap: 16px;
    background: rgba(220, 38, 38, 0.06);
    border: 1px solid rgba(220, 38, 38, 0.15);
    border-radius: var(--radius-md);
    padding: 20px 24px;
}

.seeding-pricing__note-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.seeding-pricing__note p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.seeding-pricing__note strong {
    color: var(--color-accent);
}

/* --- Cases --- */
.cases {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

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

.case-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition-normal);
}

.case-card:hover {
    transform: translateY(-4px);
    border-color: rgba(220, 38, 38, 0.25);
    box-shadow: var(--shadow-md);
}

.case-card__tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 4px 10px;
    background: var(--color-accent-glow);
    color: var(--color-accent);
    border-radius: 10px;
    margin-bottom: 12px;
}

.case-card__title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.case-card__desc {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.case-card__results {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.case-card__result {
    font-size: 12px;
    color: var(--color-text-muted);
    background: rgba(255,255,255,0.03);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.case-card__result strong {
    color: var(--color-accent);
    font-family: var(--font-en);
}

/* --- Team --- */
.team {
    padding: 100px 0;
}

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

.team-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
}

.team-card:hover {
    transform: translateY(-4px);
    border-color: rgba(220, 38, 38, 0.2);
}

.team-card__avatar {
    width: 56px;
    height: 56px;
    background: var(--color-bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 16px;
    border: 2px solid var(--color-border);
}

.team-card__name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.team-card__role {
    display: block;
    font-size: 13px;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: 12px;
}

.team-card__bio {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* --- Client Types --- */
.client-types {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.client-types__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.client-type-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-normal);
}

.client-type-card:hover {
    transform: translateY(-3px);
    border-color: rgba(220, 38, 38, 0.2);
}

.client-type-card__icon {
    font-size: 32px;
    display: block;
    margin-bottom: 12px;
}

.client-type-card h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 8px;
}

.client-type-card p {
    font-size: 12px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* --- FAQ --- */
.faq {
    padding: 100px 0;
}

.faq__grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
}

.faq-item:hover {
    border-color: rgba(220, 38, 38, 0.2);
}

.faq-item__q {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.faq-item__q h3 {
    font-size: 18px;
    font-weight: 700;
    padding-top: 2px;
}

.faq-item__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 16px;
    font-weight: 800;
    font-family: var(--font-en);
    flex-shrink: 0;
    background: rgba(220, 38, 38, 0.12);
    color: var(--color-accent);
}

.faq-item__icon--a {
    background: rgba(34, 197, 94, 0.12);
    color: #22c55e;
}

.faq-item__a {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding-left: 52px;
}

.faq-item__a p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

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

.faq-item__a strong {
    color: var(--color-text-primary);
}

.faq-item__a ul,
.faq-item__a ol {
    margin-bottom: 12px;
    padding-left: 20px;
}

.faq-item__a li {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 6px;
}

.faq-item__a li::marker {
    color: var(--color-accent);
}

/* --- Contact --- */
.contact {
    padding: 100px 0;
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact__info h3 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 16px;
}

.contact__info-desc {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 36px;
}

.contact__items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact__item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact__item-icon {
    font-size: 24px;
    width: 48px;
    height: 48px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact__item strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 2px;
}

.contact__item p {
    font-size: 14px;
    color: var(--color-text-muted);
}

.contact__qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    margin-top: 4px;
    background: rgba(255,255,255,0.03);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
}

.contact__qr-img {
    width: 120px;
    height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #fff;
    border-radius: var(--radius-sm);
    padding: 8px;
}

.contact__qr-label {
    font-size: 11px;
    color: #666;
    text-align: center;
}

.contact__qr-hint {
    font-size: 11px;
    color: var(--color-text-muted);
    text-align: center;
}

.contact__form-wrapper {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.contact__form h4 {
    font-size: 20px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    font-family: var(--font-cn);
    color: var(--color-text-primary);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

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

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

/* --- Back to Top --- */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(220, 38, 38, 0.35);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(220, 38, 38, 0.5);
}

/* --- Mobile Bottom CTA --- */
.mobile-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 998;
    padding: 10px 20px;
    padding-bottom: max(10px, env(safe-area-inset-bottom));
    background: linear-gradient(0deg, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.85) 80%, transparent 100%);
}

.mobile-cta__btn {
    display: block;
    width: 100%;
    text-align: center;
    padding: 14px;
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(220, 38, 38, 0.35);
    transition: all 0.2s;
}

.mobile-cta__btn:active {
    transform: scale(0.98);
}

/* --- Nav Active State --- */
.nav__link.active {
    color: var(--color-accent) !important;
    background: rgba(220, 38, 38, 0.1);
}

/* --- Brand Wall --- */
.brand-wall {
    padding: 80px 0;
    background: var(--color-bg-secondary);
}

.brand-wall__grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 32px 48px;
}

.brand-wall__item {
    font-size: 20px;
    font-weight: 800;
    font-family: var(--font-en);
    color: var(--color-text-muted);
    opacity: 0.5;
    transition: all 0.3s;
    letter-spacing: 1px;
}

.brand-wall__item:hover {
    opacity: 1;
    color: var(--color-text-primary);
}

/* --- Footer --- */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 64px 0 32px;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer__brand {
    /* style */
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 16px;
    margin-bottom: 16px;
}

.footer__desc {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.footer__col h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.footer__col ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer__col li,
.footer__col a {
    font-size: 13px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer__col a:hover {
    color: var(--color-accent);
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    font-size: 13px;
    color: var(--color-text-muted);
}

.footer__tagline {
    color: var(--color-accent);
    font-weight: 600;
}

/* --- Scroll Animations --- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .strengths__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cost-breakdown__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cooperation-models {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }

    .coop-card--featured {
        transform: scale(1);
    }

    .coop-card--featured:hover {
        transform: translateY(-4px);
    }

    .seeding-pricing__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .seed-plan--featured {
        transform: scale(1);
    }

    .seed-plan--featured:hover {
        transform: scale(1) translateY(-6px);
    }

    .cases__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .team__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .client-types__grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav__logo-icon {
        height: 40px;
    }

    .mobile-cta {
        display: block;
    }

    .back-to-top {
        bottom: 80px;
        right: 16px;
    }

    .footer {
        padding-bottom: 80px;
    }

    .nav__links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 8px;
        transition: right var(--transition-normal);
        border-left: 1px solid var(--color-border);
    }

    .nav__links.active {
        right: 0;
    }

    .nav__toggle {
        display: flex;
        z-index: 1001;
    }

    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .formula-banner {
        flex-direction: column;
        text-align: center;
    }

    .formula-banner__stats {
        flex-wrap: wrap;
        justify-content: center;
    }

    .cost-breakdown__grid {
        grid-template-columns: 1fr;
    }

    .process__steps {
        flex-direction: column;
        align-items: center;
    }

    .process__arrow {
        transform: rotate(90deg);
    }

    .process__step {
        max-width: 100%;
        width: 100%;
    }

    .why-cheap__grid {
        grid-template-columns: 1fr;
    }

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

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

    .client-types__grid {
        grid-template-columns: 1fr;
    }

    .seeding-pricing__grid {
        grid-template-columns: 1fr;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer__bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

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

    .btn {
        width: 100%;
    }

    .asset-promise {
        flex-direction: column;
        text-align: center;
    }
}