/* ==========================================================
   JounesAIStock 官网 — 公共样式
   视觉基调：敦煌国风 · 橙红 #B7410E + 金 #C49420 + 米白 #FDF9F4
   多页面共用：导航栏（含移动端菜单）/ 按钮 / 卡片 / 区块 / 页脚
   ========================================================== */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #B7410E;
    --primary-light: #E07B3A;
    --primary-bg: #FFF0E6;
    --gold: #C49420;
    --gold-light: #E8C76B;
    --text: #1A1A1A;
    --text-sec: #4A4A4A;
    --text-muted: #888888;
    --bg: #FDF9F4;
    --bg-card: #FFFFFF;
    --border: #E8DDD0;
    --shadow: rgba(0,0,0,0.06);
    --rise: #DC2626;
    --fall: #059669;
    --gradient-primary: linear-gradient(135deg, #B7410E 0%, #E07B3A 100%);
    --gradient-gold: linear-gradient(135deg, #C49420 0%, #E8C76B 50%, #C49420 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    line-height: 1.7;
}

/* ========== 敦煌国风动态背景 ========== */
#dunhuangCanvas {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 0;
}
.bg-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 1;
    background: radial-gradient(ellipse at 25% 20%, rgba(183,65,14,0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 75%, rgba(196,148,32,0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 50%, rgba(232,199,107,0.03) 0%, transparent 60%);
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed; top: 0; width: 100%; z-index: 1000;
    padding: 1rem 2rem;
    background: rgba(253,249,244,0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}
.navbar.scrolled {
    padding: 0.6rem 2rem;
    background: rgba(253,249,244,0.98);
    box-shadow: 0 2px 20px var(--shadow);
}
.nav-content {
    max-width: 1200px; margin: 0 auto;
    display: flex; justify-content: space-between; align-items: center;
}
.logo {
    font-size: 1.5rem; font-weight: 900;
    color: var(--primary);
    letter-spacing: 1px;
    text-decoration: none;
    white-space: nowrap;
}
.logo span { font-weight: 400; color: var(--gold); }

.nav-links { display: flex; gap: 2.2rem; list-style: none; align-items: center; }
.nav-links a {
    color: var(--text-sec); text-decoration: none; font-size: 0.95rem;
    transition: color 0.3s; position: relative; white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 2px; background: var(--primary);
    transition: width 0.3s;
}
.nav-links a:hover::after { width: 100%; }

/* 当前所在页高亮 */
.nav-links a.active { color: var(--primary); font-weight: 700; }
.nav-links a.active::after { width: 100%; }

.nav-cta {
    background: var(--gradient-primary) !important;
    color: #fff !important; padding: 0.6rem 1.6rem !important;
    border-radius: 25px !important; font-weight: 700 !important;
    box-shadow: 0 2px 15px rgba(183,65,14,0.3);
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 4px 20px rgba(183,65,14,0.4) !important; }
.nav-cta::after { display: none !important; }

/* 移动端汉堡按钮 */
.nav-toggle {
    display: none; background: none; border: none; cursor: pointer;
    padding: 6px; line-height: 0;
}
.nav-toggle span {
    display: block; width: 24px; height: 2px; margin: 5px 0;
    background: var(--primary); border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== 按钮 ========== */
.btn-primary {
    background: var(--gradient-primary); color: #fff;
    padding: 1rem 2.5rem; border-radius: 50px;
    text-decoration: none; font-weight: 700; font-size: 1.1rem;
    transition: all 0.3s; cursor: pointer; border: none;
    box-shadow: 0 4px 20px rgba(183,65,14,0.3);
    display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 30px rgba(183,65,14,0.4); }

.btn-secondary {
    background: #fff; color: var(--primary);
    padding: 1rem 2.5rem; border-radius: 50px;
    text-decoration: none; font-weight: 600; font-size: 1.1rem;
    transition: all 0.3s; border: 2px solid var(--primary);
    display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn-secondary:hover { background: var(--primary-bg); transform: translateY(-2px); }

.btn-row {
    display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
}

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

/* ========== 首页 Hero ========== */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    text-align: center; padding: 8rem 2rem 5rem;
    position: relative; overflow: hidden;
}
.hero-content { max-width: 880px; position: relative; z-index: 2; }
.hero h1 {
    font-size: 3.2rem; font-weight: 900; line-height: 1.2;
    margin-bottom: 1.2rem; animation: fadeInUp 0.8s ease 0.1s both;
    color: var(--text); word-break: keep-all;
}
.hero h1 .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-subtitle {
    font-size: 1.25rem; color: var(--text-sec);
    margin-bottom: 1.5rem; animation: fadeInUp 0.8s ease 0.2s both;
    word-break: keep-all;
}
.hero-pain {
    font-size: 1.05rem; color: var(--text-muted);
    margin-bottom: 2.5rem; animation: fadeInUp 0.8s ease 0.3s both;
}
.hero-pain span {
    display: inline-block; padding: 0.3rem 0.8rem;
    background: #FFF0F0; border-radius: 6px; margin: 0.2rem;
    color: var(--rise); font-size: 0.9rem;
}
.hero-buttons {
    display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s both;
}
.hero-trust {
    margin-top: 2.5rem; animation: fadeInUp 0.8s ease 0.5s both;
    display: flex; align-items: center; justify-content: center;
    gap: 2rem; flex-wrap: wrap;
    font-size: 0.9rem; color: var(--text-muted);
}
.hero-trust-item { display: flex; align-items: center; gap: 0.4rem; }
.hero-trust-item::before {
    content: '✓'; color: var(--fall); font-weight: 700; font-size: 1rem;
}
.scroll-indicator {
    position: absolute; bottom: 30px; left: 50%;
    transform: translateX(-50%); animation: bounce 2s ease-in-out infinite;
}
.scroll-indicator span {
    display: block; width: 26px; height: 42px;
    border: 2px solid var(--primary-light); border-radius: 13px;
    position: relative;
}
.scroll-indicator span::after {
    content: ''; position: absolute; top: 8px; left: 50%;
    transform: translateX(-50%); width: 4px; height: 8px;
    background: var(--primary-light); border-radius: 2px;
    animation: scrollDot 2s ease-in-out infinite;
}
@keyframes bounce {
    0%,100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}
@keyframes scrollDot {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 24px; }
}

/* ========== 子页面页头 ========== */
.page-hero {
    padding: 9rem 2rem 3.5rem;
    text-align: center; position: relative;
}
.page-hero h1 {
    font-size: 2.6rem; font-weight: 900; margin-bottom: 0.8rem;
    position: relative; z-index: 2;
    animation: fadeInUp 0.7s ease 0.05s both;
}
.page-hero h1 .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.page-hero p {
    color: var(--text-sec); font-size: 1.1rem; max-width: 640px;
    margin: 0 auto; position: relative; z-index: 2;
    animation: fadeInUp 0.7s ease 0.15s both;
}
.crumb {
    position: relative; z-index: 2;
    font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem;
    animation: fadeInUp 0.7s ease both;
}
.crumb a { color: var(--text-muted); text-decoration: none; }
.crumb a:hover { color: var(--primary); }

/* ========== 区块通用 ========== */
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 {
    font-size: 2.4rem; font-weight: 800; margin-bottom: 1rem; color: var(--text);
}
.section-header p {
    color: var(--text-sec); font-size: 1.15rem; max-width: 620px; margin: 0 auto;
}
.section-plain { padding: 5rem 2rem; max-width: 1100px; margin: 0 auto; }
.section-white {
    padding: 5rem 2rem; background: #fff;
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.section-inner { max-width: 1100px; margin: 0 auto; }

/* ========== 卡片网格 ========== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

.card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 16px; padding: 2.2rem;
    transition: all 0.3s ease; box-shadow: 0 2px 12px var(--shadow);
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(183,65,14,0.1);
    border-color: rgba(183,65,14,0.3);
}
.card .ico {
    width: 56px; height: 56px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem; margin-bottom: 1.2rem;
    background: var(--primary-bg);
}
.card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.6rem; color: var(--text); }
.card p { color: var(--text-sec); font-size: 0.95rem; line-height: 1.7; }

/* 带编号的功能条 */
.feature-item {
    display: flex; gap: 1.5rem; padding: 2rem;
    background: var(--bg); border-radius: 16px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}
.feature-item:hover {
    border-color: rgba(183,65,14,0.3);
    box-shadow: 0 8px 30px var(--shadow);
}
.feature-item .num {
    width: 44px; height: 44px; min-width: 44px;
    border-radius: 12px; background: var(--gradient-primary);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 800;
}
.feature-item h4 { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.4rem; color: var(--text); }
.feature-item p { color: var(--text-sec); font-size: 0.95rem; line-height: 1.7; }

/* ========== 痛点对比 ========== */
.pain-grid {
    max-width: 1000px; margin: 0 auto;
    display: grid; grid-template-columns: 1fr 1fr; gap: 3rem;
    align-items: center;
}
.pain-before h3 {
    font-size: 1.3rem; color: var(--text-sec); margin-bottom: 1.5rem; font-weight: 600;
}
.pain-before ul { list-style: none; }
.pain-before li {
    padding: 0.8rem 0; color: var(--text-muted);
    display: flex; align-items: flex-start; gap: 0.8rem;
    font-size: 1.05rem; border-bottom: 1px dashed var(--border);
}
.pain-before li::before { content: '✕'; color: #EF4444; font-weight: 700; flex-shrink: 0; }
.pain-after {
    background: var(--primary-bg); border-radius: 20px;
    padding: 2.5rem; border: 1px solid rgba(183,65,14,0.15);
}
.pain-after h3 {
    font-size: 1.3rem; color: var(--primary); margin-bottom: 1.5rem; font-weight: 700;
}
.pain-after ul { list-style: none; }
.pain-after li {
    padding: 0.8rem 0; color: var(--text);
    display: flex; align-items: flex-start; gap: 0.8rem;
    font-size: 1.05rem; border-bottom: 1px dashed rgba(183,65,14,0.15);
}
.pain-after li::before { content: '✓'; color: var(--fall); font-weight: 700; flex-shrink: 0; }
.pain-after li:last-child, .pain-before li:last-child { border-bottom: none; }

/* ========== 数字背书 ========== */
.trust-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; text-align: center;
}
.trust-item .num {
    font-size: 2.8rem; font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    line-height: 1; margin-bottom: 0.5rem;
}
.trust-item p { color: var(--text-sec); font-size: 0.95rem; }

/* ========== 定价 ========== */
.pricing-grid {
    max-width: 1200px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
    align-items: stretch;
}
.pricing-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 20px; padding: 2rem 1.5rem;
    text-align: center; transition: all 0.3s ease;
    position: relative; overflow: hidden;
    display: flex; flex-direction: column;
    box-shadow: 0 2px 12px var(--shadow);
}
.pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 50px rgba(183,65,14,0.12);
    border-color: rgba(183,65,14,0.3);
}
.pricing-card.featured {
    border-color: var(--primary);
    background: linear-gradient(135deg, var(--primary-bg) 0%, #fff 100%);
    transform: scale(1.03);
}
.pricing-card.featured:hover { transform: scale(1.03) translateY(-6px); }
.pricing-badge {
    position: absolute; top: 16px; right: -30px;
    background: var(--gradient-primary); color: #fff;
    padding: 0.3rem 2.5rem; font-size: 0.8rem; font-weight: 700;
    transform: rotate(45deg); box-shadow: 0 2px 8px rgba(183,65,14,0.3);
}
.pricing-icon { font-size: 2.2rem; margin-bottom: 1rem; display: block; }
.pricing-card h3 { font-size: 1.25rem; font-weight: 800; margin-bottom: 0.4rem; }
.pricing-tagline {
    color: var(--primary); font-size: 0.85rem; font-weight: 600;
    margin-bottom: 1rem; padding: 0.4rem 1rem;
    background: var(--primary-bg); border-radius: 8px; display: inline-block;
}
.pricing-amount { margin: 1rem 0; }
.pricing-amount .currency { font-size: 1.2rem; font-weight: 700; vertical-align: super; color: var(--primary); }
.pricing-amount .price { font-size: 2.8rem; font-weight: 900; color: var(--primary); line-height: 1; }
.pricing-amount .period { font-size: 0.9rem; color: var(--text-muted); }
.pricing-features { list-style: none; padding: 0; margin: 1.2rem 0; text-align: left; flex-grow: 1; }
.pricing-features li {
    padding: 0.5rem 0; border-bottom: 1px solid var(--border);
    color: var(--text-sec); font-size: 0.88rem;
    display: flex; align-items: center; gap: 0.5rem;
}
.pricing-features li:last-child { border-bottom: none; }
.pricing-features li::before { content: '✓'; color: var(--fall); font-weight: 700; font-size: 0.9rem; min-width: 16px; }
.pricing-features li.no::before { content: '✕'; color: #EF4444; }
.pricing-btn {
    display: block; width: 100%; padding: 0.9rem;
    border-radius: 50px; text-decoration: none;
    font-weight: 700; font-size: 0.95rem;
    transition: all 0.3s; margin-top: auto; cursor: pointer; border: none;
}
.pricing-btn.primary { background: var(--gradient-primary); color: #fff; box-shadow: 0 3px 15px rgba(183,65,14,0.3); }
.pricing-btn.primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(183,65,14,0.4); }
.pricing-btn.secondary { background: transparent; color: var(--primary); border: 2px solid var(--border); }
.pricing-btn.secondary:hover { border-color: var(--primary); background: var(--primary-bg); }

/* 功能对比表 */
.cmp-wrap { overflow-x: auto; margin-top: 1rem; }
table.cmp {
    width: 100%; border-collapse: collapse; background: #fff;
    border: 1px solid var(--border); border-radius: 16px; overflow: hidden;
    min-width: 640px;
}
table.cmp th, table.cmp td {
    padding: 0.9rem 1rem; font-size: 0.9rem;
    border-bottom: 1px solid var(--border); text-align: center;
}
table.cmp th { background: var(--primary-bg); color: var(--primary); font-weight: 700; }
table.cmp td:first-child, table.cmp th:first-child { text-align: left; color: var(--text-sec); }
table.cmp tr:last-child td { border-bottom: none; }
table.cmp .yes { color: var(--fall); font-weight: 700; }
table.cmp .no { color: #C9C9C9; }

/* ========== FAQ ========== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); padding: 1.5rem 0; cursor: pointer; transition: all 0.3s; }
.faq-item:hover { background: var(--bg); margin: 0 -1rem; padding: 1.5rem 1rem; border-radius: 10px; }
.faq-q {
    font-size: 1.1rem; font-weight: 600; color: var(--text);
    display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq-q::after { content: '+'; font-size: 1.5rem; color: var(--primary); transition: transform 0.3s; flex-shrink: 0; }
.faq-item.active .faq-q::after { transform: rotate(45deg); }
.faq-a {
    max-height: 0; overflow: hidden; transition: max-height 0.35s ease;
    color: var(--text-sec); font-size: 0.95rem; line-height: 1.7; padding-top: 0;
}
.faq-item.active .faq-a { max-height: 320px; padding-top: 1rem; }

/* ========== CTA ========== */
.cta {
    padding: 5rem 2rem; text-align: center;
    background: linear-gradient(135deg, var(--primary-bg) 0%, #fff 50%, var(--primary-bg) 100%);
    border-top: 1px solid var(--border);
}
.cta h2 { font-size: 2.4rem; font-weight: 800; margin-bottom: 1rem; color: var(--text); }
.cta p { color: var(--text-sec); font-size: 1.15rem; margin-bottom: 2rem; }

/* ========== 联系 / 下载 ========== */
.contact-box {
    max-width: 720px; margin: 0 auto;
    background: linear-gradient(135deg, var(--primary-bg) 0%, #fff 60%);
    border: 1px solid rgba(183,65,14,0.18);
    border-radius: 24px; padding: 3rem 2.5rem;
    text-align: center; box-shadow: 0 8px 40px rgba(183,65,14,0.08);
}
.contact-box h2 { font-size: 2rem; font-weight: 800; margin-bottom: 0.5rem; color: var(--text); }
.contact-subtitle { color: var(--text-sec); font-size: 1rem; margin-bottom: 2rem; }
.contact-items { display: flex; flex-direction: column; gap: 1.2rem; }
.contact-item {
    background: #fff; border: 1px solid var(--border); border-radius: 16px;
    padding: 1.5rem 1.8rem; display: flex; align-items: center; gap: 1.2rem;
    text-align: left; transition: all 0.3s ease;
}
.contact-item:hover {
    border-color: rgba(183,65,14,0.3);
    box-shadow: 0 4px 20px rgba(183,65,14,0.08);
    transform: translateY(-2px);
}
.contact-icon {
    width: 52px; height: 52px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; flex-shrink: 0; background: var(--gradient-primary);
}
.contact-icon.qq { background: linear-gradient(135deg, #12B7F5 0%, #0099FF 100%); }
.contact-info h4 { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 0.3rem; }
.contact-info p { color: var(--text-sec); font-size: 0.92rem; line-height: 1.6; }
.contact-info a { color: var(--primary); font-weight: 600; text-decoration: none; word-break: break-all; }
.contact-info a:hover { text-decoration: underline; }

.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; max-width: 900px; margin: 0 auto; }
.dl-card {
    background: #fff; border: 1px solid var(--border); border-radius: 16px;
    padding: 1.8rem 1.2rem; text-align: center;
    text-decoration: none; color: inherit;
    transition: all 0.3s ease; display: block;
}
.dl-card:hover {
    transform: translateY(-4px); border-color: rgba(183,65,14,0.3);
    box-shadow: 0 10px 30px rgba(183,65,14,0.1);
}
.dl-card .ico { font-size: 2rem; margin-bottom: 0.6rem; }
.dl-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 0.3rem; }
.dl-card p { font-size: 0.85rem; color: var(--text-muted); }

.tip {
    margin-top: 1.8rem; padding: 1rem 1.2rem;
    background: #FFFBEB; border: 1px solid #FDE68A;
    border-radius: 12px; color: #B45309; font-size: 0.9rem; line-height: 1.6;
    text-align: left;
}

/* ========== Footer ========== */
footer {
    padding: 3rem 2rem; text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-muted); font-size: 0.9rem;
    background: #fff; position: relative; z-index: 2;
}
footer .logo { margin-bottom: 0.8rem; display: inline-block; }
.footer-links {
    display: flex; gap: 1.6rem; justify-content: center; flex-wrap: wrap;
    margin: 1rem 0 0.5rem;
}
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover { color: var(--primary); }
.disclaimer {
    max-width: 800px; margin: 1.5rem auto 0;
    padding: 1.2rem; background: #FFFBEB;
    border: 1px solid #FDE68A; border-radius: 12px;
    font-size: 0.85rem; color: #B45309; text-align: left; line-height: 1.7;
}

/* ========== 悬浮下载按钮 ========== */
.float-cta {
    position: fixed; bottom: 24px; right: 24px; z-index: 999;
    background: var(--gradient-primary); color: #fff;
    padding: 1rem 1.8rem; border-radius: 50px;
    font-weight: 700; font-size: 1rem;
    box-shadow: 0 4px 20px rgba(183,65,14,0.4);
    text-decoration: none; cursor: pointer; border: none;
    transition: all 0.3s; display: none;
}
.float-cta:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(183,65,14,0.5); }
.float-cta.show { display: block; }

/* ========== 滚动渐显 ========== */
.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.4,0,0.2,1); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* ========== 响应式 ========== */
@media (max-width: 980px) {
    .grid-3, .trust-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-4, .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .dl-grid { grid-template-columns: 1fr; }
    .pain-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.4rem; }
    .page-hero h1 { font-size: 2rem; }
    .pricing-card.featured { transform: none; }
    .pricing-card.featured:hover { transform: translateY(-6px); }

    /* 移动端导航：汉堡菜单 */
    .nav-toggle { display: block; }
    .nav-links {
        position: fixed; top: 0; right: -100%;
        width: min(78vw, 320px); height: 100vh;
        flex-direction: column; align-items: flex-start;
        gap: 0;
        background: rgba(253,249,244,0.99);
        backdrop-filter: blur(20px);
        padding: 5.5rem 1.8rem 2rem;
        box-shadow: -8px 0 40px rgba(0,0,0,0.12);
        transition: right 0.35s ease;
        z-index: 1001;
    }
    .nav-links.open { right: 0; }
    .nav-links li { width: 100%; }
    .nav-links a {
        display: block; padding: 1rem 0; font-size: 1.05rem;
        border-bottom: 1px solid var(--border);
    }
    .nav-links a::after { display: none; }
    .nav-links a.nav-cta {
        margin-top: 1.4rem; text-align: center; border-bottom: none;
        padding: 0.85rem 1.6rem !important;
    }
    .nav-mask {
        display: none; position: fixed; inset: 0;
        background: rgba(0,0,0,0.35); z-index: 1000;
    }
    .nav-mask.show { display: block; }
}

@media (max-width: 640px) {
    .grid-2, .grid-3, .grid-4, .pricing-grid, .trust-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 1.9rem; }
    .hero-subtitle { font-size: 1.05rem; }
    .page-hero h1 { font-size: 1.7rem; }
    .section-header h2 { font-size: 1.7rem; }
    .cta h2 { font-size: 1.8rem; }
    .contact-box { padding: 2rem 1.4rem; }
    .contact-box h2 { font-size: 1.5rem; }
    .contact-item { padding: 1.1rem; flex-direction: column; text-align: center; gap: 0.8rem; }
    .hero-trust { gap: 1rem; }
    .float-cta { padding: 0.8rem 1.4rem; font-size: 0.9rem; }
}