/* ================================================================
   Landing V2 - 浅色商务蓝 + 金色辅助（与用户端/管理员页面统一）
   ================================================================ */
:root {
    --hero-bg: #fafafa;
    --hero-bg-2: #ffffff;
    --hero-accent: #2563eb;
    --hero-accent-2: #1e40af;
    --hero-gold: #d4a017;
    --hero-text: #18181b;
    --hero-text-2: #52525b;
    --hero-text-3: #a1a1aa;
    --hero-border: #e4e4e7;
    --hero-card: #ffffff;
    --hero-card-border: #e4e4e7;
    --hero-card-hover: #f4f4f5;
}

/* ===== 导航栏 ===== */
.nav-v2 {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,.8);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--hero-border);
    transition: all .3s ease;
}
.nav-v2.scrolled { background: rgba(255,255,255,.95); box-shadow: 0 4px 24px rgba(0,0,0,.06); }
.nav-v2-inner {
    max-width: 1200px; margin: 0 auto; padding: 0 2rem;
    height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.nav-v2-brand {
    display: flex; align-items: center; gap: .625rem;
    text-decoration: none; color: var(--hero-text);
    font-weight: 700; font-size: 1.0625rem; letter-spacing: -.01em;
}
.nav-v2-brand .brand-mark {
    width: 32px; height: 32px; border-radius: 8px;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    display: flex; align-items: center; justify-content: center;
    color: #fff; box-shadow: 0 2px 12px rgba(37,99,235,.25);
    transition: transform .3s ease;
}
.nav-v2-brand:hover .brand-mark { transform: scale(1.1) rotate(-5deg); }
.nav-v2-links { display: flex; align-items: center; gap: 2rem; }
.nav-v2-links a {
    font-size: .875rem; color: var(--hero-text-2); text-decoration: none;
    font-weight: 500; transition: color .2s ease; position: relative;
}
.nav-v2-links a::after {
    content: ""; position: absolute; bottom: -4px; left: 0; right: 0;
    height: 2px; background: linear-gradient(90deg, var(--hero-accent), var(--hero-accent-2));
    border-radius: 1px; transform: scaleX(0); transition: transform .3s ease;
}
.nav-v2-links a:hover { color: var(--hero-text); }
.nav-v2-links a:hover::after { transform: scaleX(1); }
.nav-v2-actions { display: flex; align-items: center; gap: .625rem; }
.nav-v2-toggle {
    display: none; background: none; border: none; color: var(--hero-text);
    cursor: pointer; padding: .25rem;
}

/* ===== 按钮 ===== */
.btn-v2 {
    display: inline-flex; align-items: center; justify-content: center;
    gap: .375rem; padding: .5rem 1.125rem;
    font-size: .875rem; font-weight: 600; font-family: inherit;
    border: none; border-radius: 8px; cursor: pointer;
    transition: all .2s ease; text-decoration: none;
    position: relative; overflow: hidden;
}
.btn-v2-primary {
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    color: #fff; box-shadow: 0 2px 12px rgba(37,99,235,.2);
}
.btn-v2-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(37,99,235,.3);
}
.btn-v2-primary::before {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,.2), transparent);
    opacity: 0; transition: opacity .2s ease;
}
.btn-v2-primary:hover::before { opacity: 1; }
.btn-v2-outline {
    background: transparent; color: var(--hero-text);
    border: 1px solid var(--hero-border);
}
.btn-v2-outline:hover {
    background: var(--hero-card-hover); border-color: var(--hero-text-3);
}
.btn-v2-gold {
    background: linear-gradient(135deg, var(--hero-gold), #b8860b);
    color: #fff; box-shadow: 0 2px 12px rgba(212,160,23,.25);
    animation: pulse-gold 2s ease-in-out infinite;
}
.btn-v2-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 24px rgba(212,160,23,.4);
}
@keyframes pulse-gold {
    0%, 100% { box-shadow: 0 2px 12px rgba(212,160,23,.25); }
    50% { box-shadow: 0 2px 24px rgba(212,160,23,.5); }
}
.btn-v2-lg { padding: .75rem 2rem; font-size: 1rem; }

/* ===== Hero 区域 ===== */
.hero-v2 {
    position: relative; min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: 120px 2rem 80px;
    overflow: hidden;
    background: var(--hero-bg);
}
.hero-v2-bg {
    position: absolute; inset: 0; z-index: 0;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(37,99,235,.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(30,64,175,.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(212,160,23,.04) 0%, transparent 70%);
}
.hero-v2-grid {
    position: absolute; inset: 0; z-index: 0;
    background-image:
        linear-gradient(rgba(0,0,0,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 80%);
}
.hero-v2-particles {
    position: absolute; inset: 0; z-index: 0;
}
.particle {
    position: absolute; width: 4px; height: 4px;
    background: var(--hero-accent); border-radius: 50%;
    opacity: .2; animation: float 15s infinite ease-in-out;
}
.particle:nth-child(2n) { background: var(--hero-accent-2); }
.particle:nth-child(3n) { background: var(--hero-gold); }
@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0; }
    10% { opacity: .3; }
    90% { opacity: .3; }
    100% { transform: translateY(-100vh) translateX(100px); opacity: 0; }
}
.hero-v2-content {
    position: relative; z-index: 1; text-align: center;
    max-width: 900px; margin: 0 auto;
}
.hero-v2-badge {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .375rem 1rem; margin-bottom: 1.5rem;
    background: var(--hero-card); border: 1px solid var(--hero-card-border);
    border-radius: 999px; font-size: .8125rem; color: var(--hero-text-2);
    animation: fadeInDown .8s ease both;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.hero-v2-badge .dot {
    width: 6px; height: 6px; background: var(--hero-accent);
    border-radius: 50%; animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .5; transform: scale(1.2); }
}
.hero-v2-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800; letter-spacing: -.03em;
    line-height: 1.1; margin-bottom: 1.5rem;
    color: var(--hero-text);
    animation: fadeInUp .8s ease .2s both;
}
.hero-v2-title .gradient-text {
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2), var(--hero-gold));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-v2-desc {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--hero-text-2); line-height: 1.7;
    max-width: 640px; margin: 0 auto 2.5rem;
    animation: fadeInUp .8s ease .4s both;
}
.hero-v2-actions {
    display: flex; align-items: center; justify-content: center;
    gap: 1rem; flex-wrap: wrap;
    animation: fadeInUp .8s ease .6s both;
}
.hero-v2-scroll {
    position: absolute; bottom: 2rem; left: 50%;
    transform: translateX(-50%); z-index: 1;
    display: flex; flex-direction: column; align-items: center;
    gap: .5rem; color: var(--hero-text-3); font-size: .75rem;
    animation: fadeIn 1s ease 1s both;
}
.hero-v2-scroll .mouse {
    width: 24px; height: 40px; border: 2px solid var(--hero-text-3);
    border-radius: 12px; position: relative;
}
.hero-v2-scroll .mouse::before {
    content: ""; position: absolute; top: 8px; left: 50%;
    transform: translateX(-50%); width: 4px; height: 8px;
    background: var(--hero-text-3); border-radius: 2px;
    animation: scroll-wheel 2s ease-in-out infinite;
}
@keyframes scroll-wheel {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ===== 数据展示 ===== */
.stats-v2 {
    position: relative; padding: 6rem 2rem;
    background: var(--hero-bg-2);
}
.stats-v2-inner {
    max-width: 1200px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
}
.stat-v2-item {
    text-align: center; padding: 2rem;
    background: var(--hero-card); border: 1px solid var(--hero-card-border);
    border-radius: 16px; transition: all .3s ease;
    opacity: 0; transform: translateY(30px);
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.stat-v2-item.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity .6s ease, transform .6s ease;
}
.stat-v2-item:hover {
    transform: translateY(-4px);
    border-color: rgba(37,99,235,.3);
    box-shadow: 0 8px 32px rgba(37,99,235,.12);
}
.stat-v2-num {
    font-size: 3rem; font-weight: 800;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: .5rem; font-variant-numeric: tabular-nums;
}
.stat-v2-label {
    font-size: .875rem; color: var(--hero-text-2);
    font-weight: 500;
}

/* ===== 区块通用 ===== */
.section-v2 {
    position: relative; padding: 6rem 2rem;
}
.section-v2-inner {
    max-width: 1200px; margin: 0 auto;
}
.section-v2-header {
    text-align: center; margin-bottom: 4rem;
}
.section-v2-label {
    display: inline-block; padding: .25rem .75rem;
    background: var(--hero-card); border: 1px solid var(--hero-card-border);
    border-radius: 999px; font-size: .75rem; color: var(--hero-accent);
    font-weight: 600; text-transform: uppercase; letter-spacing: .1em;
    margin-bottom: 1rem;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.section-v2-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800; letter-spacing: -.02em;
    margin-bottom: 1rem;
    color: var(--hero-text);
}
.section-v2-desc {
    font-size: 1.0625rem; color: var(--hero-text-2);
    max-width: 560px; margin: 0 auto; line-height: 1.7;
}

/* ===== 核心功能 ===== */
.features-v2 {
    background: var(--hero-bg-2);
}
.features-v2-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}
.feature-v2-card {
    position: relative; padding: 2rem;
    background: var(--hero-card); border: 1px solid var(--hero-card-border);
    border-radius: 16px; transition: all .3s ease;
    opacity: 0; transform: translateY(30px);
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.feature-v2-card.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity .6s ease, transform .6s ease;
}
.feature-v2-card:hover {
    transform: translateY(-8px);
    border-color: rgba(37,99,235,.3);
    box-shadow: 0 16px 48px rgba(37,99,235,.12);
}
.feature-v2-card::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: linear-gradient(90deg, transparent, var(--hero-accent), transparent);
    transform: scaleX(0); transition: transform .3s ease;
}
.feature-v2-card:hover::before { transform: scaleX(1); }
.feature-v2-icon {
    width: 48px; height: 48px; border-radius: 12px;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.25rem; color: #fff;
    box-shadow: 0 4px 16px rgba(37,99,235,.25);
    transition: transform .3s ease;
}
.feature-v2-card:hover .feature-v2-icon {
    transform: scale(1.1) rotate(-5deg);
}
.feature-v2-card h3 {
    font-size: 1.125rem; font-weight: 700;
    margin-bottom: .5rem; color: var(--hero-text);
}
.feature-v2-card p {
    font-size: .875rem; color: var(--hero-text-2);
    line-height: 1.65;
}

/* ===== 工作流程 ===== */
.workflow-v2 {
    background: var(--hero-bg);
}
.workflow-v2-steps {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem; position: relative;
}
.workflow-v2-steps::before {
    content: ""; position: absolute; top: 40px; left: 0; right: 0;
    height: 2px; background: linear-gradient(90deg, transparent, var(--hero-accent), transparent);
    opacity: .2;
}
.workflow-v2-step {
    position: relative; text-align: center;
    opacity: 0; transform: translateY(30px);
}
.workflow-v2-step.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity .6s ease, transform .6s ease;
}
.workflow-v2-step-num {
    width: 80px; height: 80px; margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 2rem; font-weight: 800; color: #fff;
    box-shadow: 0 8px 24px rgba(37,99,235,.25);
    position: relative; z-index: 1;
    transition: transform .3s ease;
}
.workflow-v2-step:hover .workflow-v2-step-num {
    transform: scale(1.1);
}
.workflow-v2-step h3 {
    font-size: 1.125rem; font-weight: 700;
    margin-bottom: .5rem; color: var(--hero-text);
}
.workflow-v2-step p {
    font-size: .875rem; color: var(--hero-text-2);
    line-height: 1.65;
}

/* ===== 技术优势 ===== */
.tech-v2 {
    background: var(--hero-bg-2);
}
.tech-v2-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.tech-v2-card {
    position: relative; padding: 2rem;
    background: var(--hero-card);
    border: 1px solid var(--hero-card-border);
    border-radius: 16px; transition: all .3s ease;
    opacity: 0; transform: translateY(30px);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.tech-v2-card.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity .6s ease, transform .6s ease;
}
.tech-v2-card::before {
    content: ""; position: absolute; top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(37,99,235,.08) 0%, transparent 70%);
    opacity: 0; transition: opacity .3s ease;
}
.tech-v2-card:hover::before { opacity: 1; }
.tech-v2-card:hover {
    transform: translateY(-4px);
    border-color: rgba(37,99,235,.3);
    box-shadow: 0 8px 32px rgba(37,99,235,.12);
}
.tech-v2-icon {
    width: 56px; height: 56px; border-radius: 14px;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.25rem; color: #fff;
    box-shadow: 0 4px 16px rgba(37,99,235,.25);
    position: relative; z-index: 1;
    transition: transform .3s ease;
}
.tech-v2-card:hover .tech-v2-icon {
    transform: scale(1.1) rotate(5deg);
}
.tech-v2-card h3 {
    font-size: 1.125rem; font-weight: 700;
    margin-bottom: .5rem; color: var(--hero-text);
    position: relative; z-index: 1;
}
.tech-v2-card p {
    font-size: .875rem; color: var(--hero-text-2);
    line-height: 1.65; position: relative; z-index: 1;
}

/* ===== 免费模式说明 ===== */
.free-v2 {
    background: var(--hero-bg);
}
.free-v2-card {
    max-width: 720px; margin: 0 auto; padding: 3rem 2rem;
    background: linear-gradient(135deg, var(--hero-card), var(--hero-bg-2));
    border: 2px solid var(--hero-gold);
    border-radius: 20px; text-align: center;
    box-shadow: 0 8px 32px rgba(212,160,23,.15);
    opacity: 0; transform: translateY(30px);
}
.free-v2-card.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity .6s ease, transform .6s ease;
}
.free-v2-badge {
    display: inline-block; padding: .5rem 1.5rem;
    background: linear-gradient(135deg, var(--hero-gold), #b8860b);
    color: #fff; font-size: .875rem; font-weight: 700;
    border-radius: 999px; margin-bottom: 1.5rem;
    box-shadow: 0 4px 16px rgba(212,160,23,.3);
}
.free-v2-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800; color: var(--hero-text);
    margin-bottom: 1rem; letter-spacing: -.02em;
}
.free-v2-desc {
    font-size: 1.0625rem; color: var(--hero-text-2);
    line-height: 1.7; margin-bottom: 2rem;
}
.free-v2-features {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem; margin-bottom: 2rem;
    text-align: left;
}
.free-v2-feature {
    display: flex; align-items: flex-start; gap: .75rem;
}
.free-v2-feature-icon {
    width: 40px; height: 40px; border-radius: 10px;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    display: flex; align-items: center; justify-content: center;
    color: #fff; flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(37,99,235,.2);
}
.free-v2-feature-content h4 {
    font-size: .9375rem; font-weight: 700;
    color: var(--hero-text); margin-bottom: .25rem;
}
.free-v2-feature-content p {
    font-size: .8125rem; color: var(--hero-text-2);
    line-height: 1.5;
}
.free-v2-note {
    padding: 1rem 1.5rem;
    background: var(--hero-bg-2); border: 1px solid var(--hero-border);
    border-radius: 12px; font-size: .875rem; color: var(--hero-text-2);
    line-height: 1.7;
}
.free-v2-note strong {
    color: var(--hero-gold); font-weight: 700;
}

/* ===== 用户评价 ===== */
.testimonials-v2 {
    background: var(--hero-bg-2);
}
.testimonials-v2-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}
.testimonial-v2-card {
    padding: 2rem;
    background: var(--hero-card); border: 1px solid var(--hero-card-border);
    border-radius: 16px; transition: all .3s ease;
    opacity: 0; transform: translateY(30px);
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.testimonial-v2-card.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity .6s ease, transform .6s ease;
}
.testimonial-v2-card:hover {
    transform: translateY(-4px);
    border-color: rgba(37,99,235,.3);
    box-shadow: 0 8px 32px rgba(37,99,235,.12);
}
.testimonial-v2-text {
    font-size: .9375rem; color: var(--hero-text-2);
    line-height: 1.7; margin-bottom: 1.5rem;
    font-style: italic;
}
.testimonial-v2-author {
    display: flex; align-items: center; gap: .75rem;
}
.testimonial-v2-avatar {
    width: 40px; height: 40px; border-radius: 50%;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 700; font-size: .875rem;
}
.testimonial-v2-info h4 {
    font-size: .875rem; font-weight: 700;
    color: var(--hero-text); margin-bottom: .125rem;
}
.testimonial-v2-info p {
    font-size: .75rem; color: var(--hero-text-3);
}

/* ===== FAQ ===== */
.faq-v2 {
    background: var(--hero-bg);
}
.faq-v2-list {
    max-width: 720px; margin: 0 auto;
    display: flex; flex-direction: column; gap: 1rem;
}
.faq-v2-item {
    background: var(--hero-card); border: 1px solid var(--hero-card-border);
    border-radius: 12px; overflow: hidden;
    transition: all .3s ease;
    opacity: 0; transform: translateY(20px);
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
}
.faq-v2-item.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity .6s ease, transform .6s ease;
}
.faq-v2-item:hover {
    border-color: rgba(37,99,235,.2);
    box-shadow: 0 4px 16px rgba(37,99,235,.08);
}
.faq-v2-question {
    width: 100%; padding: 1.25rem 1.5rem;
    background: none; border: none; text-align: left;
    font-size: .9375rem; font-weight: 600; color: var(--hero-text);
    cursor: pointer; display: flex; align-items: center; justify-content: space-between;
    transition: color .2s ease;
}
.faq-v2-question:hover {
    color: var(--hero-accent);
}
.faq-v2-question .icon {
    width: 20px; height: 20px; flex-shrink: 0;
    transition: transform .3s ease;
}
.faq-v2-item.active .faq-v2-question .icon {
    transform: rotate(180deg);
}
.faq-v2-answer {
    max-height: 0; overflow: hidden;
    transition: max-height .3s ease, padding .3s ease;
}
.faq-v2-item.active .faq-v2-answer {
    max-height: 300px;
}
.faq-v2-answer-content {
    padding: 0 1.5rem 1.25rem;
    font-size: .875rem; color: var(--hero-text-2);
    line-height: 1.7;
}

/* ===== CTA ===== */
.cta-v2 {
    position: relative; padding: 6rem 2rem;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    overflow: hidden;
}
.cta-v2::before {
    content: ""; position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.cta-v2-inner {
    position: relative; z-index: 1; text-align: center;
    max-width: 640px; margin: 0 auto;
}
.cta-v2-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800; color: #fff;
    margin-bottom: 1rem; letter-spacing: -.02em;
}
.cta-v2-desc {
    font-size: 1.0625rem; color: rgba(255,255,255,.9);
    margin-bottom: 2rem; line-height: 1.7;
}

/* ===== Footer ===== */
.footer-v2 {
    padding: 4rem 2rem 2rem;
    background: var(--hero-bg-2);
    border-top: 1px solid var(--hero-border);
}
.footer-v2-inner {
    max-width: 1200px; margin: 0 auto;
}
.footer-v2-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem; margin-bottom: 3rem;
}
.footer-v2-brand {
    display: flex; flex-direction: column; gap: 1rem;
}
.footer-v2-brand .brand-mark {
    width: 40px; height: 40px; border-radius: 10px;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    display: flex; align-items: center; justify-content: center;
    color: #fff; box-shadow: 0 2px 12px rgba(37,99,235,.25);
}
.footer-v2-brand p {
    font-size: .875rem; color: var(--hero-text-3);
    line-height: 1.6;
}
.footer-v2-col h4 {
    font-size: .875rem; font-weight: 700;
    color: var(--hero-text); margin-bottom: 1rem;
}
.footer-v2-col ul {
    list-style: none; display: flex; flex-direction: column; gap: .5rem;
}
.footer-v2-col a {
    font-size: .875rem; color: var(--hero-text-3);
    text-decoration: none; transition: color .2s ease;
}
.footer-v2-col a:hover {
    color: var(--hero-accent);
}
.footer-v2-bottom {
    padding-top: 2rem; border-top: 1px solid var(--hero-border);
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 1rem;
}
.footer-v2-bottom p {
    font-size: .8125rem; color: var(--hero-text-3);
}
.footer-v2-social {
    display: flex; gap: 1rem;
}
.footer-v2-social a {
    width: 36px; height: 36px; border-radius: 8px;
    background: var(--hero-card); border: 1px solid var(--hero-card-border);
    display: flex; align-items: center; justify-content: center;
    color: var(--hero-text-3); transition: all .2s ease;
}
.footer-v2-social a:hover {
    background: var(--hero-accent); color: #fff;
    border-color: var(--hero-accent);
}

/* ===== 动画 ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .nav-v2-links { display: none; }
    .nav-v2-toggle { display: block; }
    .nav-v2-links.open {
        display: flex; flex-direction: column;
        position: absolute; top: 64px; left: 0; right: 0;
        background: rgba(255,255,255,.98);
        padding: 1rem 2rem; gap: 1rem;
        border-bottom: 1px solid var(--hero-border);
        box-shadow: 0 4px 24px rgba(0,0,0,.06);
    }
    .hero-v2 { padding: 100px 1.5rem 60px; }
    .hero-v2-actions { flex-direction: column; width: 100%; }
    .hero-v2-actions .btn-v2 { width: 100%; max-width: 320px; }
    .stats-v2 { padding: 4rem 1.5rem; }
    .section-v2 { padding: 4rem 1.5rem; }
    .workflow-v2-steps::before { display: none; }
    .free-v2-features { grid-template-columns: 1fr; }
    .footer-v2-grid { grid-template-columns: 1fr; gap: 2rem; }
    .footer-v2-bottom { flex-direction: column; text-align: center; }
}

/* ================================================================
   全流程展示 - 6步自动化
   ================================================================ */
.flow-v2 {
    background: var(--hero-bg-2);
    position: relative;
    overflow: hidden;
}
.flow-v2::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(37,99,235,.05) 0%, transparent 60%);
}
.flow-v2-timeline {
    position: relative; max-width: 900px; margin: 0 auto;
    padding: 2rem 0;
}
.flow-v2-timeline::before {
    content: ""; position: absolute; left: 50%; top: 0; bottom: 0;
    width: 3px; background: linear-gradient(180deg, var(--hero-accent), var(--hero-gold));
    transform: translateX(-50%);
    border-radius: 2px;
}
.flow-v2-step {
    position: relative; margin-bottom: 3rem;
    display: flex; align-items: center; gap: 2rem;
    opacity: 0; transform: translateX(-30px);
}
.flow-v2-step:nth-child(even) {
    flex-direction: row-reverse;
    transform: translateX(30px);
}
.flow-v2-step.visible {
    opacity: 1; transform: translateX(0);
    transition: opacity .6s ease, transform .6s ease;
}
.flow-v2-step-num {
    position: absolute; left: 50%; transform: translateX(-50%);
    width: 60px; height: 60px; border-radius: 50%;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; font-weight: 800; color: #fff;
    box-shadow: 0 4px 16px rgba(37,99,235,.3);
    z-index: 2;
    transition: transform .3s ease;
}
.flow-v2-step:hover .flow-v2-step-num {
    transform: translateX(-50%) scale(1.15);
}
.flow-v2-step-content {
    flex: 1; padding: 1.5rem 2rem;
    background: var(--hero-card); border: 1px solid var(--hero-card-border);
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,.04);
    transition: all .3s ease;
}
.flow-v2-step:nth-child(odd) .flow-v2-step-content {
    margin-right: calc(50% + 40px);
}
.flow-v2-step:nth-child(even) .flow-v2-step-content {
    margin-left: calc(50% + 40px);
}
.flow-v2-step:hover .flow-v2-step-content {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(37,99,235,.12);
    border-color: rgba(37,99,235,.3);
}
.flow-v2-step-title {
    font-size: 1.125rem; font-weight: 700;
    color: var(--hero-text); margin-bottom: .5rem;
    display: flex; align-items: center; gap: .5rem;
}
.flow-v2-step-title .icon {
    width: 24px; height: 24px; color: var(--hero-accent);
}
.flow-v2-step-desc {
    font-size: .875rem; color: var(--hero-text-2);
    line-height: 1.65;
}
.flow-v2-step-badge {
    display: inline-block; padding: .25rem .75rem;
    background: var(--hero-accent); color: #fff;
    font-size: .75rem; font-weight: 600;
    border-radius: 999px; margin-top: .5rem;
}
.flow-v2-step-badge--gold {
    background: var(--hero-gold);
}

/* ================================================================
   新用户补贴计算器
   ================================================================ */
.subsidy-calc-v2 {
    background: linear-gradient(135deg, var(--hero-bg), var(--hero-bg-2));
    position: relative;
    overflow: hidden;
}
.subsidy-calc-v2::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 50% 100%, rgba(212,160,23,.08) 0%, transparent 60%);
}
.subsidy-calc-v2-card {
    max-width: 800px; margin: 0 auto; padding: 3rem 2rem;
    background: var(--hero-card); border: 2px solid var(--hero-gold);
    border-radius: 24px; text-align: center;
    box-shadow: 0 12px 48px rgba(212,160,23,.2);
    position: relative; z-index: 1;
    opacity: 0; transform: translateY(30px);
}
.subsidy-calc-v2-card.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity .6s ease, transform .6s ease;
}
.subsidy-calc-v2-badge {
    display: inline-block; padding: .5rem 1.5rem;
    background: linear-gradient(135deg, var(--hero-gold), #b8860b);
    color: #fff; font-size: .875rem; font-weight: 700;
    border-radius: 999px; margin-bottom: 1.5rem;
    box-shadow: 0 4px 16px rgba(212,160,23,.3);
    animation: pulse-gold 2s ease-in-out infinite;
}
.subsidy-calc-v2-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800; color: var(--hero-text);
    margin-bottom: 1rem; letter-spacing: -.02em;
}
.subsidy-calc-v2-desc {
    font-size: 1.0625rem; color: var(--hero-text-2);
    line-height: 1.7; margin-bottom: 2rem;
}
.subsidy-calc-v2-form {
    display: flex; flex-direction: column; gap: 1.5rem;
    margin-bottom: 2rem;
}
.subsidy-calc-v2-input-group {
    display: flex; flex-direction: column; gap: .5rem;
    text-align: left;
}
.subsidy-calc-v2-label {
    font-size: .875rem; font-weight: 600;
    color: var(--hero-text);
}
.subsidy-calc-v2-input {
    padding: .75rem 1rem;
    border: 2px solid var(--hero-border);
    border-radius: 12px; font-size: 1rem;
    transition: all .2s ease;
}
.subsidy-calc-v2-input:focus {
    outline: none; border-color: var(--hero-accent);
    box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}
.subsidy-calc-v2-slider {
    -webkit-appearance: none; appearance: none;
    width: 100%; height: 8px; border-radius: 4px;
    background: var(--hero-border); outline: none;
    transition: background .2s ease;
}
.subsidy-calc-v2-slider::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 24px; height: 24px; border-radius: 50%;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    cursor: pointer; box-shadow: 0 2px 8px rgba(37,99,235,.3);
    transition: transform .2s ease;
}
.subsidy-calc-v2-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}
.subsidy-calc-v2-slider::-moz-range-thumb {
    width: 24px; height: 24px; border-radius: 50%;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    cursor: pointer; box-shadow: 0 2px 8px rgba(37,99,235,.3);
    border: none; transition: transform .2s ease;
}
.subsidy-calc-v2-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}
.subsidy-calc-v2-result {
    padding: 2rem;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    border-radius: 16px; color: #fff;
    margin-bottom: 1.5rem;
}
.subsidy-calc-v2-result-label {
    font-size: .875rem; opacity: .9; margin-bottom: .5rem;
}
.subsidy-calc-v2-result-value {
    font-size: 3rem; font-weight: 800;
    line-height: 1; margin-bottom: .5rem;
    font-variant-numeric: tabular-nums;
}
.subsidy-calc-v2-result-note {
    font-size: .875rem; opacity: .8;
}
.subsidy-calc-v2-highlight {
    display: inline-block; padding: .5rem 1rem;
    background: rgba(255,255,255,.2); border-radius: 8px;
    font-size: .875rem; font-weight: 600;
    margin-top: .5rem;
}
.subsidy-calc-v2-note {
    padding: 1rem 1.5rem;
    background: var(--hero-bg-2); border: 1px solid var(--hero-border);
    border-radius: 12px; font-size: .875rem; color: var(--hero-text-2);
    line-height: 1.7; text-align: left;
}
.subsidy-calc-v2-note strong {
    color: var(--hero-gold); font-weight: 700;
}

/* ================================================================
   资质展示 + FAQ 左右布局
   ================================================================ */
.certs-faq-v2 {
    background: var(--hero-bg-2);
}
.certs-faq-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 3rem; max-width: 1000px; margin: 0 auto;
}
.certs-v2-panel, .faq-v2-panel {
    background: var(--hero-card); border: 1px solid var(--hero-card-border);
    border-radius: 16px; padding: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.certs-v2-list {
    display: flex; flex-direction: column; gap: 1.25rem;
}
.cert-v2-item {
    display: flex; align-items: flex-start; gap: 1rem;
    opacity: 0; transform: translateY(20px);
    transition: all .3s ease;
}
.cert-v2-item.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity .5s ease, transform .5s ease;
}
.cert-v2-item .cert-v2-icon {
    width: 48px; height: 48px; flex-shrink: 0;
    background: linear-gradient(135deg, var(--hero-accent), var(--hero-accent-2));
    border-radius: 12px; display: flex; align-items: center; justify-content: center;
    color: #fff; box-shadow: 0 2px 8px rgba(37,99,235,.2);
}
.cert-v2-content h4 {
    font-size: .9375rem; font-weight: 600;
    color: var(--hero-text); margin-bottom: .25rem;
}
.cert-v2-content p {
    font-size: .8125rem; color: var(--hero-text-2);
    line-height: 1.4;
}

/* 响应式 */
@media (max-width: 768px) {
    .certs-faq-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* 响应式 */
@media (max-width: 768px) {
    .flow-v2-timeline::before {
        left: 30px;
    }
    .flow-v2-step,
    .flow-v2-step:nth-child(even) {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .flow-v2-step-num {
        left: 30px;
    }
    .flow-v2-step:nth-child(odd) .flow-v2-step-content,
    .flow-v2-step:nth-child(even) .flow-v2-step-content {
        margin-left: 70px;
        margin-right: 0;
        width: calc(100% - 70px);
    }
    .subsidy-calc-v2-card {
        padding: 2rem 1.5rem;
    }
}