/* 鹿石欧系钓法网 - 主样式表 */
/* 设计主题：户外钓鱼 · 简约时尚 */

:root {
    --deep-green: #1B4332;
    --light-green: #2D6A4F;
    --off-white: #F5F5F0;
    --warm-sand: #D4A373;
    --dark-brown: #3E2723;
    --light-gray: #E8E8E5;
    --medium-gray: #6B7280;
    --white: #FFFFFF;
    --overlay-dark: rgba(27, 67, 50, 0.75);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', Roboto, sans-serif;
    background-color: var(--off-white);
    color: var(--dark-brown);
    line-height: 1.8;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header / Navigation ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(27, 67, 50, 0.95);
    backdrop-filter: blur(10px);
    padding: 16px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: var(--off-white);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--off-white);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.5px;
    transition: color 0.2s ease;
    opacity: 0.9;
}

.nav-links a:hover {
    opacity: 1;
    color: var(--warm-sand);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--off-white);
    font-size: 24px;
    cursor: pointer;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background: linear-gradient(var(--overlay-dark), var(--overlay-dark)),
                url('images/hero-bg.jpg') center/cover no-repeat;
    padding: 120px 24px 80px;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: 52px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
    letter-spacing: 4px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero .subtitle {
    font-size: 20px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 40px;
    font-weight: 300;
    letter-spacing: 2px;
}

.hero-cta {
    display: inline-block;
    padding: 14px 40px;
    background-color: var(--warm-sand);
    color: var(--white);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 2px;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 2px solid var(--warm-sand);
}

.hero-cta:hover {
    background-color: transparent;
    color: var(--warm-sand);
}

.scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    letter-spacing: 2px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ===== Section Common Styles ===== */
.section {
    padding: 100px 0;
}

.section-alt {
    background-color: var(--light-gray);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 600;
    color: var(--deep-green);
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.section-header .section-desc {
    font-size: 16px;
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

.section-divider {
    width: 60px;
    height: 3px;
    background-color: var(--warm-sand);
    margin: 20px auto 0;
}

/* ===== Feature Cards ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(27, 67, 50, 0.1);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--deep-green);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    color: var(--medium-gray);
    line-height: 1.7;
}

/* ===== Content Blocks ===== */
.content-block {
    max-width: 900px;
    margin: 0 auto;
}

.content-block p {
    font-size: 16px;
    color: var(--dark-brown);
    margin-bottom: 16px;
    line-height: 1.9;
}

.content-list {
    list-style: none;
    padding: 0;
    margin: 24px 0;
}

.content-list li {
    font-size: 16px;
    color: var(--dark-brown);
    padding: 10px 0 10px 28px;
    position: relative;
    line-height: 1.7;
}

.content-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 18px;
    width: 8px;
    height: 8px;
    background-color: var(--warm-sand);
    border-radius: 50%;
}

/* ===== Company Section ===== */
.company-section {
    background: linear-gradient(135deg, var(--deep-green) 0%, var(--light-green) 100%);
    color: var(--white);
}

.company-section .section-header h2 {
    color: var(--white);
}

.company-section .section-header .section-desc {
    color: rgba(255,255,255,0.8);
}

.company-section .section-divider {
    background-color: var(--warm-sand);
}

.company-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.company-content p {
    font-size: 17px;
    color: rgba(255,255,255,0.9);
    line-height: 2;
    margin-bottom: 16px;
}

.company-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--warm-sand);
    display: block;
}

.stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-top: 8px;
}

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    text-align: center;
    padding: 32px;
}

.contact-item .contact-label {
    font-size: 14px;
    color: var(--medium-gray);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.contact-item .contact-value {
    font-size: 18px;
    color: var(--deep-green);
    font-weight: 500;
}

/* ===== App Demo Gallery ===== */
/* ===== App Demo Gallery ===== */
.app-demo-section-header {
    text-align: center;
    margin: 80px 0 48px;
}

.app-demo-section-header h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--deep-green);
    letter-spacing: 1px;
}

.app-demo-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px 36px;
    margin-bottom: 80px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    padding-bottom: 24px;
}

.app-demo-item {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.app-demo-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 36px rgba(27, 67, 50, 0.15);
}

.app-demo-item img {
    width: 100%;
    max-height: 520px;
    object-fit: contain;
    display: block;
    background: #f0f0f0;
}

.app-demo-label {
    padding: 18px 20px;
    text-align: center;
    font-size: 15px;
    font-weight: 500;
    color: var(--deep-green);
    background: var(--light-gray);
    border-top: 1px solid rgba(0,0,0,0.05);
}

@media (max-width: 768px) {
    .app-demo-gallery {
        grid-template-columns: 1fr;
        gap: 36px;
        max-width: 420px;
    }
    .app-demo-section-header h3 {
        font-size: 20px;
    }
}

/* ===== AI App Promotion Section ===== */
.app-cta-banner {
    text-align: center;
    margin-top: 60px;
    padding: 48px 32px;
    background: linear-gradient(135deg, var(--deep-green), var(--light-green));
    border-radius: 12px;
}

.app-cta-title {
    color: #ffffff;
    font-size: 28px;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.app-cta-desc {
    color: rgba(255, 255, 255, 0.85);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto 24px;
    line-height: 1.8;
}

.app-cta-button {
    display: inline-block;
    padding: 14px 40px;
    background: var(--warm-sand);
    color: #ffffff;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 1px;
}

@media (max-width: 768px) {
    .app-cta-banner {
        padding: 32px 20px;
        margin-top: 40px;
    }
    .app-cta-title {
        font-size: 22px;
    }
    .app-cta-desc {
        font-size: 14px;
    }
    .app-cta-button {
        padding: 12px 28px;
        font-size: 14px;
    }
}

/* ===== Footer ===== */
footer {
    background-color: var(--deep-green);
    padding: 40px 0 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

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

.footer-left {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
}

.footer-left a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-left a:hover {
    color: var(--warm-sand);
}

.footer-right {
    display: flex;
    gap: 24px;
}

.footer-right a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.2s ease;
}

.footer-right a:hover {
    color: var(--warm-sand);
}

.footer-bottom {
    text-align: center;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.4);
    font-size: 13px;
}

/* ===== Policy Page ===== */
.policy-page {
    padding-top: 100px;
    min-height: 100vh;
}

.policy-page header {
    position: relative;
    background-color: var(--deep-green);
}

.policy-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 24px;
}

.policy-content h1 {
    font-size: 32px;
    font-weight: 600;
    color: var(--deep-green);
    margin-bottom: 32px;
}

.policy-content h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--deep-green);
    margin: 32px 0 16px;
}

.policy-content p {
    font-size: 15px;
    color: var(--dark-brown);
    line-height: 1.8;
    margin-bottom: 12px;
}

.policy-content ul {
    margin-left: 24px;
    margin-bottom: 16px;
}

.policy-content li {
    font-size: 15px;
    color: var(--dark-brown);
    line-height: 1.8;
    margin-bottom: 8px;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--deep-green);
        flex-direction: column;
        padding: 16px 24px;
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .hero {
        padding: 100px 16px 60px;
        min-height: auto;
        height: 100vh;
    }

    .hero h1 {
        font-size: 32px;
        letter-spacing: 2px;
    }

    .hero .subtitle {
        font-size: 16px;
    }

    .section {
        padding: 60px 0;
    }

    .section-header h2 {
        font-size: 26px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card {
        padding: 28px 20px;
    }

    .company-stats {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .policy-content {
        padding: 40px 16px;
    }

    .policy-content h1 {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 26px;
    }

    .section-header h2 {
        font-size: 22px;
    }

    .stat-number {
        font-size: 28px;
    }
}