/* ==================== CSS Reset & Variables ==================== */
:root {
    --green-900: #064E3B;
    --green-800: #065F46;
    --green-700: #047857;
    --green-600: #059669;
    --green-500: #10B981;
    --green-400: #34D399;
    --green-300: #6EE7B7;
    --green-200: #A7F3D0;
    --green-100: #D1FAE5;
    --green-50: #ECFDF5;

    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

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

    --max-width: 1280px;
    --nav-height: 72px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    line-height: 1.7;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }

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

/* ==================== Typography ==================== */
.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--green-600);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 12px;
    position: relative;
    padding-left: 36px;
}
.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 24px;
    height: 2px;
    background: var(--green-500);
    transform: translateY(-50%);
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
    line-height: 1.3;
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--gray-500);
    max-width: 640px;
    line-height: 1.7;
}

/* ==================== Navigation ==================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: #ffffff;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    isolation: isolate;
    transition: background-color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.nav.scrolled { box-shadow: var(--shadow-md); }

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 40px;
    height: var(--nav-height);
    display: flex;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-right: 36px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    flex-shrink: 0;
    margin-right: 36px;
    transform: translateZ(0);
    backface-visibility: hidden;
}
.nav-logo-img {
    height: 64px;
    width: auto;
    aspect-ratio: 2043 / 770;
    display: block;
    object-fit: contain;
    flex: 0 0 auto;
    transform: translateZ(0);
    backface-visibility: hidden;
}
.nav-logo-img--footer {
    height: 56px;
    filter: brightness(0) invert(1);  /* footer 深色背景，logo 转为白色 */
}

.nav-links { display: flex; align-items: center; gap: 22px; list-style: none; margin: 0; padding: 0; flex: 1; justify-content: flex-start; }
.nav-links > li > a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: color var(--transition-fast);
    position: relative;
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    white-space: nowrap;
}
/* underline only for top-level links (not dropdown menu links) */
.nav-links > li > a:not(.nav-dropdown-toggle)::after,
.nav-links > li > a.nav-dropdown-toggle::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-500);
    transition: width var(--transition-normal);
}
.nav-links > li > a:hover { color: var(--gray-900); }
.nav-links > li > a:hover::after { width: 100%; }
.nav-links > li > a.active { color: var(--green-600); }
.nav-links > li > a.active::after { width: 100%; }

.nav-cta {
    height: 46px;
    padding: 0 32px;
    background: var(--green-600);
    color: white !important;
    border-radius: 24px;
    font-weight: 600 !important;
    transition: background-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal) !important;
    text-decoration: none;
    white-space: nowrap;
    display: flex;
    align-items: center;
    margin-left: 32px;
    flex-shrink: 0;
}
.nav-cta:hover {
    background: var(--green-700);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(5,150,105,0.4);
}
.nav-cta::after { display: none !important; }

.nav-toggle {
    display: none;
    background: none;
    width: 32px;
    height: 32px;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    padding: 4px;
}
.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: transform var(--transition-normal), opacity var(--transition-normal), background-color var(--transition-normal);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ==================== Nav Dropdown ==================== */
.nav-links > li { position: relative; }

.nav-arrow {
    transition: transform 0.25s ease;
    flex-shrink: 0;
}
.nav-dropdown:hover > .nav-dropdown-toggle .nav-arrow {
    transform: rotate(180deg);
}

/* Dropdown menu */
.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: -16px;
    width: 340px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
    padding: 10px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
    z-index: 1000;
    border: 1px solid var(--gray-100);
}
.nav-dropdown:hover > .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.nav-dropdown-menu li {
    margin-bottom: 2px;
}
.nav-dropdown-menu li:last-child {
    margin-bottom: 0;
}
.nav-dropdown-menu li a {
    display: block;
    padding: 14px 16px;
    border-radius: 10px;
    text-decoration: none;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    border-left: 3px solid transparent;
}
.nav-dropdown-menu li a:hover {
    background: #ffffff;
    border-left-color: var(--green-500);
}
.nav-dropdown-menu li a:hover .nav-dropdown-title {
    color: var(--green-700);
}
.nav-dropdown-title {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: #102033;
    line-height: 1.4;
}
.nav-dropdown-desc {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: #6B7280;
    line-height: 1.4;
}

/* Prevent hover on touch devices */
/* Nav overlay */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.nav-overlay.active {
    display: block;
    opacity: 1;
}
/* Mobile CTA in nav */
.nav-cta-mobile { display: none; }

@media (hover: none) and (min-width: 1025px) {
    .nav-dropdown:hover > .nav-dropdown-menu {
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
    }

    .nav-dropdown.open > .nav-dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-dropdown.open > .nav-dropdown-toggle .nav-arrow {
        transform: rotate(180deg);
    }
}

/* ==================== Hero Section ==================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    max-height: 900px;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero-slides { position: absolute; inset: 0; }
.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-slide.active { opacity: 1; }

.hero-slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    transition: transform 6s ease;
    filter: brightness(1.06) contrast(1.1) saturate(1.12);
}
.hero-slide.active .hero-slide-bg { transform: scale(1); }

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(0,0,0,0.26) 0%, rgba(0,0,0,0.05) 45%, rgba(0,0,0,0.34) 100%),
        radial-gradient(ellipse at 50% 50%, transparent 40%, rgba(0,0,0,0.18) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: white;
    padding: 0 24px;
    max-width: 800px;
}
.hero-content .hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease;
}
.hero-content h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.15s both;
}
.hero-content p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    opacity: 0.9;
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.3s both;
}
.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    animation: fadeInUp 0.8s ease 0.45s both;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    white-space: nowrap;
}
.btn-primary {
    background: var(--green-600);
    color: white;
}
.btn-primary:hover { 
    background: var(--green-700);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(5,150,105,0.4);
}
.btn-outline {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(8px);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.hero-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 10px;
}
.hero-dots button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    transition: all var(--transition-normal);
}
.hero-dots button.active { background: white; width: 32px; border-radius: 6px; }

.hero-arrows {
    position: absolute;
    top: 50%;
    left: 24px;
    right: 24px;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    pointer-events: none;
}
.hero-arrows button {
    pointer-events: auto;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(8px);
    color: white;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}
.hero-arrows button:hover { background: rgba(255,255,255,0.3); }

/* ==================== Animations ==================== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ==================== Selling Points Section ==================== */
.stats-section {
    padding: 72px 0 80px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

/* --- Section Header --- */
.sellpoint-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 52px;
}
.sellpoint-tag {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--green-700);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    background: var(--green-100);
    padding: 4px 14px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}
.sellpoint-main-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.3;
    margin-bottom: 16px;
}
.sellpoint-highlight {
    color: var(--green-600);
}
.sellpoint-intro {
    font-size: 0.9375rem;
    color: var(--gray-500);
    line-height: 1.75;
    font-weight: 400;
}

/* --- Cards Grid --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

/* --- Selling Point Cards --- */
.sellpoint-item {
    padding: 32px 24px 28px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}
.sellpoint-item::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--green-500), var(--green-400));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}
.sellpoint-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--green-200);
}
.sellpoint-item:hover::before { transform: scaleX(1); }

.sellpoint-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-50);
    border-radius: 50%;
    color: var(--green-600);
    transition: background var(--transition-normal), color var(--transition-normal);
}
.sellpoint-item:hover .sellpoint-icon {
    background: var(--green-600);
    color: var(--white);
}
.sellpoint-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
    line-height: 1.3;
    letter-spacing: 0.01em;
}
.sellpoint-subtitle {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--green-600);
    margin-bottom: 10px;
    letter-spacing: 0.02em;
}
.sellpoint-desc {
    font-size: 0.875rem;
    color: var(--gray-500);
    line-height: 1.65;
    font-weight: 400;
    margin-bottom: 16px;
}
.sellpoint-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 0;
    list-style: none;
    margin-top: auto;
}
.sellpoint-tags li {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--green-700);
    background: var(--green-50);
    border: 1px solid var(--green-200);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    white-space: nowrap;
}
.sellpoint-item:hover .sellpoint-tags li {
    background: var(--green-100);
    border-color: var(--green-300);
}

/* ==================== Section Common ==================== */
.section {
    padding: 100px 0;
}
.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-header .section-desc { margin: 0 auto; }

/* ==================== 核心解决方案 — 1大+4小卡片 B2B 国际风 ==================== */
.solutions-showcase {
    padding: 100px 0;
    background: #F7FBF8;
    position: relative;
}

/* ===== 居中标题区 ===== */
.sol-header {
    text-align: center;
    max-width: 820px;
    margin: 0 auto 60px;
}
.sol-title {
    font-size: clamp(1.85rem, 3.5vw, 2.5rem);
    font-weight: 800;
    color: #1E7A46;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-bottom: 14px;
}
.sol-divider {
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, #1E7A46, #34D058);
    border-radius: 2px;
    margin: 0 auto 18px;
}
.sol-intro {
    font-size: 0.9375rem;
    color: #556B65;
    line-height: 1.75;
    font-weight: 400;
}

/* ===== 主网格布局（左大 + 右四宫格） ===== */
.sol-grid {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 24px;
    align-items: stretch;
}

/* ===== 左侧大卡片 — 水肥一体化（重点推荐） ===== */
.sol-card--featured {
    background: linear-gradient(145deg, #F3FAF5 0%, #EAF7EF 50%, #EDF9F2 100%);
    border: 1px solid #C8E6D0;
    border-radius: 16px;
    padding: 36px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.sol-card--featured:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(30, 122, 70, 0.12);
    border-color: #A3D9BF;
}

.sol-fc-body {
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.sol-fc-num {
    font-size: 0.8rem;
    font-weight: 700;
    color: #1E7A46;
    letter-spacing: 0.12em;
    opacity: 0.6;
    margin-bottom: 10px;
}
.sol-fc-title {
    font-size: 1.45rem;
    font-weight: 800;
    color: #1E7A46;
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}
.sol-fc-desc {
    font-size: 0.88rem;
    color: #4A6354;
    line-height: 1.68;
    margin-bottom: 22px;
    max-width: 420px;
    font-weight: 400;
}

/* 大卡片标签 — 2×2 网格 */
.sol-fc-tags {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 24px;
    max-width: 320px;
}
.sol-fc-tags li {
    font-size: 0.78rem;
    font-weight: 500;
    color: #1E7A46;
    background: rgba(255,255,255,0.75);
    border: 1px solid #C8E6D0;
    padding: 7px 12px;
    border-radius: 8px;
    white-space: nowrap;
    transition: background .25s ease, border-color .25s ease;
}
.sol-card--featured:hover .sol-fc-tags li {
    background: #fff;
    border-color: #A3D9BF;
}

/* 橙色 CTA 按钮 */
.sol-fc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    min-width: 150px;
    padding: 11px 26px;
    font-size: 0.875rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #F59E0B, #EA880C);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: transform .25s ease, box-shadow .25s ease;
    letter-spacing: 0.02em;
}
.sol-fc-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
}

/* 大卡片图片区 */
.sol-fc-img {
    margin-top: 20px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    z-index: 1;
}
.sol-fc-img img {
    width: 100%;
    height: auto;
    max-height: 260px;
    object-fit: cover;
    object-position: center left;
    display: block;
    border-radius: 12px;
    opacity: 0.92;
    transition: opacity .35s ease, transform .5s ease;
}
.sol-card--featured:hover .sol-fc-img img {
    opacity: 1;
    transform: scale(1.02);
}

/* ===== 右侧四宫格容器 ===== */
.sol-small-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    align-content: start;
}

/* ===== 小卡片通用样式 ===== */
.sol-card--small {
    background: #fff;
    border: 1px solid #E2EBE5;
    border-radius: 14px;
    padding: 24px 20px 20px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.sol-card--small::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, #1E7A46, #34D058);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s ease;
}
.sol-card--small:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(30, 122, 70, 0.09);
    border-color: #C8E6D0;
}
.sol-card--small:hover::before { transform: scaleX(1); }

/* 小卡片顶部：编号 + 图标 */
.sol-sc-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.sol-sc-num {
    font-size: 0.75rem;
    font-weight: 700;
    color: #1E7A46;
    letter-spacing: 0.1em;
    opacity: 0.5;
}
.sol-sc-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #F3FAF5;
    border-radius: 10px;
    transition: background .3s ease, box-shadow .3s ease;
}
.sol-card--small:hover .sol-sc-icon {
    background: #1E7A46;
    box-shadow: 0 4px 12px rgba(30, 122, 70, 0.2);
}
.sol-card--small:hover .sol-sc-icon svg { stroke: #fff; }
.sol-card--small:hover .sol-sc-icon svg [fill="#1E7A46"] { fill: #fff; stroke: none; }

/* 小卡片标题与副标题 */
.sol-sc-title {
    font-size: 1rem;
    font-weight: 750;
    color: #1E7A46;
    line-height: 1.3;
    margin-bottom: 2px;
    letter-spacing: -0.01em;
}
.sol-sc-subtitle {
    font-size: 0.72rem;
    font-weight: 500;
    color: #8BA89D;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 8px;
    display: block;
}
.sol-sc-desc {
    font-size: 0.81rem;
    color: #667A70;
    line-height: 1.6;
    margin-bottom: 14px;
    font-weight: 400;
    flex-shrink: 0;
}

/* 小卡片标签 — 2×2 */
.sol-sc-tags {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 5px 8px;
    margin-bottom: 16px;
}
.sol-sc-tags li {
    font-size: 0.71rem;
    font-weight: 500;
    color: #2A7D51;
    background: #F3FAF5;
    border: 1px solid #DCEFE4;
    padding: 4px 9px;
    border-radius: 6px;
    white-space: nowrap;
    transition: all .25s ease;
}
.sol-card--small:hover .sol-sc-tags li {
    background: #EAF7EF;
    border-color: #BDE0CD;
    color: #1E7A46;
}

/* 小卡片链接按钮 */
.sol-sc-link {
    font-size: 0.8rem;
    font-weight: 650;
    color: #1E7A46;
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    transition: gap .25s ease, color .25s ease;
    gap: 2px;
    letter-spacing: 0.01em;
}
.sol-sc-link:hover { color: #156B37; gap: 6px; }

/* ===== 响应式断点 ===== */
@media (max-width: 1100px) {
    .sol-grid { grid-template-columns: 1fr; gap: 28px; }
    .sol-small-grid { grid-template-columns: repeat(2, 1fr); }
    .sol-fc-img img { max-height: 220px; }
}
@media (max-width: 768px) {
    .solutions-showcase { padding: 72px 0; }
    .sol-header { margin-bottom: 44px; }
    .sol-small-grid { grid-template-columns: 1fr; gap: 16px; }
    .sol-card--featured { padding: 28px 24px; }
    .sol-fc-tags { max-width: 100%; }
    .sol-fc-title { font-size: 1.25rem; }
    .sol-fc-img img { max-height: 200px; }
}
@media (max-width: 480px) {
    .sol-card--featured { padding: 24px 20px; border-radius: 12px; }
    .sol-card--small { padding: 20px 16px 16px; border-radius: 12px; }
}



/* ==================== Solutions Section ==================== */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.solution-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
}
.solution-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--green-200);
}
.solution-image {
    height: 280px;
    background-size: cover;
    background-position: center;
    position: relative;
}
.solution-image .solution-tag {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 6px 16px;
    background: var(--green-600);
    color: white;
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}
.solution-body { padding: 32px; }
.solution-body h3 { font-size: 1.375rem; font-weight: 700; color: var(--gray-900); margin-bottom: 12px; }
.solution-body p { font-size: 0.9375rem; color: var(--gray-500); line-height: 1.7; margin-bottom: 20px; }
.solution-features { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.solution-feature-tag {
    padding: 6px 14px;
    background: var(--green-50);
    color: var(--green-700);
    font-size: 0.8125rem;
    font-weight: 500;
    border-radius: var(--radius-full);
}
.solution-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    color: var(--green-600);
    font-size: 0.9375rem;
    transition: gap var(--transition-fast);
}
.solution-link:hover { gap: 12px; }

/* ==================== 核心产品分类 ==================== */

.prod-cats {
    padding: 80px 0 100px;
    background: #FAFCFA;
}

.prod-cats-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 48px;
    align-items: start;
}

/* --- Left Panel --- */
.prod-cats-left {
    position: sticky;
    top: 100px;
}
.prod-cats-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #1E7A46;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    background: #EAF7EF;
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 16px;
}
.prod-cats-title {
    font-size: clamp(1.625rem, 2.8vw, 2.25rem);
    font-weight: 800;
    color: #1E7A46;
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}
.prod-cats-title-accent {
    color: #1E7A46;
}
.prod-cats-intro {
    font-size: 0.875rem;
    color: #475569;
    line-height: 1.7;
    font-weight: 400;
    margin-bottom: 28px;
}
.prod-cats-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #1E7A46, #2D9D5C);
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.prod-cats-btn:hover {
    box-shadow: 0 6px 20px rgba(30, 122, 70, 0.3);
    transform: translateY(-1px);
}
.prod-cats-btn svg {
    transition: transform 0.3s ease;
}
.prod-cats-btn:hover svg {
    transform: translateX(3px);
}

/* --- Right Grid --- */
.prod-cats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

/* --- Card --- */
.pc-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    padding: 20px 18px 16px;
    text-decoration: none;
    transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
    position: relative;
    overflow: hidden;
}
.pc-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #1E7A46, #2D9D5C);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s ease;
}
.pc-card:hover {
    box-shadow: 0 8px 28px rgba(30, 122, 70, 0.1);
    border-color: rgba(30, 122, 70, 0.2);
    transform: translateY(-2px);
}
.pc-card:hover::before {
    transform: scaleX(1);
}

/* Card top row: icon + number */
.pc-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}
.pc-card-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #F3FAF5;
    border-radius: 10px;
    transition: background 0.3s ease;
}
.pc-card:hover .pc-card-icon {
    background: rgba(30, 122, 70, 0.1);
}
.pc-card-num {
    font-size: 0.6875rem;
    font-weight: 700;
    color: #1E7A46;
    letter-spacing: 0.1em;
    opacity: 0.4;
}

/* Card content */
.pc-card-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: #1E7A46;
    line-height: 1.4;
    margin-bottom: 6px;
}
.pc-card-desc {
    font-size: 0.75rem;
    color: #64748B;
    line-height: 1.6;
    font-weight: 400;
    flex: 1;
    margin-bottom: 12px;
}
.pc-card-link {
    font-size: 0.75rem;
    font-weight: 600;
    color: #1E7A46;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}
.pc-card:hover .pc-card-link {
    opacity: 1;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .prod-cats-wrap {
        grid-template-columns: 280px 1fr;
        gap: 32px;
    }
    .prod-cats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .prod-cats {
        padding: 60px 0 80px;
    }
    .prod-cats-wrap {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .prod-cats-left {
        position: static;
        max-width: 600px;
    }
    .prod-cats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .prod-cats-wrap {
        padding: 0 16px;
    }
    .prod-cats-grid {
        grid-template-columns: 1fr;
    }
}


/* ==================== 应用场景 ==================== */
.app-scenarios {
    padding: 80px 0 100px;
    background: #FAFCFA;
}
.as-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}
.as-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #1E7A46;
    background: #EAF7EF;
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
}
.as-title {
    font-size: clamp(1.5rem, 2.8vw, 2.25rem);
    font-weight: 800;
    color: #1A2B22;
    margin-bottom: 16px;
    line-height: 1.3;
}
.as-title-accent {
    color: #1E7A46;
}
.as-intro {
    font-size: 0.9375rem;
    color: #64748B;
    line-height: 1.7;
}
.as-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    max-width: 1120px;
    margin: 0 auto;
}
.as-card {
    background: #fff;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    text-decoration: none;
}
.as-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(30, 122, 70, 0.15);
}
.as-card-img {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}
.as-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.as-card:hover .as-card-img img {
    transform: scale(1.06);
}
.as-card-num {
    position: absolute;
    top: 12px;
    left: 14px;
    font-size: 0.8125rem;
    font-weight: 700;
    color: #fff;
    background: rgba(30, 122, 70, 0.85);
    padding: 3px 10px;
    border-radius: 16px;
    backdrop-filter: blur(4px);
}
.as-card-body {
    padding: 20px 22px 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.as-card-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #1E7A46;
    margin-bottom: 2px;
}
.as-card-en {
    font-size: 0.75rem;
    color: #94A3B8;
    font-weight: 500;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
}
.as-card-desc {
    font-size: 0.8125rem;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 14px;
    flex: 1;
}
.as-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}
.as-card-tags span {
    font-size: 0.6875rem;
    font-weight: 600;
    color: #1E7A46;
    background: #EAF7EF;
    padding: 3px 10px;
    border-radius: 12px;
    white-space: nowrap;
}
.as-card-link {
    font-size: 0.8125rem;
    font-weight: 600;
    color: #1E7A46;
    transition: all 0.2s ease;
}
.as-card:hover .as-card-link {
    color: #F28C28;
}

/* Tablet */
@media (max-width: 1024px) {
    .as-grid { grid-template-columns: repeat(2, 1fr); }
}
/* Mobile */
@media (max-width: 640px) {
    .as-grid { grid-template-columns: 1fr; gap: 20px; }
    .as-card-img { height: 180px; }
}

/* ==================== 云端农业物联网平台 ==================== */
.platform-section {
    padding: 90px 0 100px;
    background: #FAFCFA;
}
.platform-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 56px;
}
.platform-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #1E7A46;
    background: #EAF7EF;
    padding: 5px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
}
.platform-title {
    font-size: clamp(1.5rem, 2.8vw, 2.25rem);
    font-weight: 800;
    color: #1A2B22;
    margin-bottom: 16px;
    line-height: 1.3;
}
.platform-title-accent {
    color: #1E7A46;
}
.platform-intro {
    font-size: 0.9375rem;
    color: #64748B;
    line-height: 1.7;
}

.platform-body {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 48px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto 44px;
}

/* Left Visual */
.platform-visual {
    background: #fff;
    border-radius: 16px;
    padding: 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid #E2E8F0;
}
.platform-visual svg {
    width: 100%;
    height: auto;
    display: block;
}
.platform-visual-img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    display: block;
    border-radius: 12px;
}


/* Right Feature Cards */
.platform-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}
.platform-card {
    background: #fff;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    padding: 18px 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    transition: all 0.3s ease;
}
.platform-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(30, 122, 70, 0.1);
    border-color: #1E7A46;
}
.platform-card-icon {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #EAF7EF;
    border-radius: 10px;
}
.platform-card-icon svg {
    width: 24px;
    height: 24px;
    display: block;
}
.platform-card-body {
    flex: 1;
    min-width: 0;
}
.platform-card-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #1E7A46;
    margin-bottom: 2px;
    line-height: 1.3;
}
.platform-card-en {
    font-size: 0.7rem;
    color: #94A3B8;
    font-weight: 500;
    letter-spacing: 0.04em;
    margin-bottom: 6px;
}
.platform-card-desc {
    font-size: 0.75rem;
    color: #475569;
    line-height: 1.5;
    margin: 0;
}

/* CTA */
.platform-cta {
    text-align: center;
}
.platform-btn {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #1E7A46, #2E9A5E);
    padding: 12px 28px;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(30, 122, 70, 0.25);
}
.platform-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(30, 122, 70, 0.35);
    background: linear-gradient(135deg, #166534, #1E7A46);
}

/* Responsive */
@media (max-width: 1100px) {
    .platform-body {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .platform-visual { max-width: 520px; margin: 0 auto; }
    .platform-features { max-width: 700px; margin: 0 auto; }
}
@media (max-width: 640px) {
    .platform-section { padding: 72px 0 80px; }
    .platform-header { margin-bottom: 40px; }
    .platform-features { grid-template-columns: 1fr; gap: 14px; }
    .platform-card { padding: 16px; }
    .platform-visual { padding: 20px; }
}

/* ==================== 为什么选择 GreenSpark ==================== */
.why-greenspark {
    padding: 80px 0 100px;
    background: #F7FBF8;
}

.why-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 56px;
    align-items: start;
}

/* --- Left Panel --- */
.why-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #1E7A46;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    background: #EAF7EF;
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 16px;
}

.why-title {
    font-size: clamp(1.625rem, 2.8vw, 2.25rem);
    font-weight: 800;
    color: #1E7A46;
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.why-title-accent {
    color: #1E7A46;
}

.why-intro {
    font-size: 0.9375rem;
    color: #475569;
    line-height: 1.75;
    font-weight: 400;
    margin-bottom: 28px;
}

.why-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #1E7A46, #2D9D5C);
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.why-btn:hover {
    box-shadow: 0 6px 20px rgba(30, 122, 70, 0.3);
    transform: translateY(-1px);
}

.why-btn svg {
    transition: transform 0.3s ease;
}

.why-btn:hover svg {
    transform: translateX(3px);
}

/* --- Right Cards --- */
.why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.why-card {
    background: #fff;
    border: 1px solid #E2E8F0;
    border-radius: 14px;
    padding: 24px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.why-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(30, 122, 70, 0.12);
    border-color: rgba(30, 122, 70, 0.2);
}

.why-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #EAF7EF;
    border-radius: 10px;
    margin-bottom: 16px;
}

.why-icon svg {
    display: block;
}

.why-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #1E7A46;
    margin-bottom: 2px;
    line-height: 1.3;
}

.why-card-en {
    font-size: 0.72rem;
    font-weight: 500;
    color: #94A3B8;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.why-card-desc {
    font-size: 0.8125rem;
    color: #475569;
    line-height: 1.6;
    font-weight: 400;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .why-wrap {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .why-greenspark {
        padding: 60px 0 80px;
    }
    .why-wrap {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .why-left {
        max-width: 600px;
    }
    .why-grid {
        gap: 16px;
    }
}

@media (max-width: 640px) {
    .why-grid {
        grid-template-columns: 1fr;
    }
    .why-card {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .why-wrap {
        padding: 0 16px;
    }
    .why-title {
        font-size: 1.5rem;
    }
    .why-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ==================== Project Support Process ==================== */
.process-section {
    padding: 80px 0 100px;
    background: #F7FBF8;
}

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

.process-header {
    text-align: center;
    margin-bottom: 56px;
}

.process-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #1E7A46;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    background: #EAF7EF;
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 16px;
}

.process-title {
    font-size: clamp(1.625rem, 2.8vw, 2.25rem);
    font-weight: 800;
    color: #1E7A46;
    line-height: 1.25;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.process-title-accent {
    color: #2D9D5C;
}

.process-subtitle {
    font-size: 0.9375rem;
    color: #475569;
    line-height: 1.7;
    max-width: 720px;
    margin: 0 auto;
}

.process-track {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
    position: relative;
    margin-bottom: 48px;
}

.process-track::before {
    content: '';
    position: absolute;
    top: 24px;
    left: 0;
    right: 0;
    height: 2px;
    background: repeating-linear-gradient(to right, #1E7A46 0, #1E7A46 8px, transparent 8px, transparent 16px);
    z-index: 0;
}

.process-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: #fff;
    border: 1px solid #E2E8F0;
    border-radius: 14px;
    padding: 28px 16px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.05);
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.process-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(30, 122, 70, 0.12);
    border-color: rgba(30, 122, 70, 0.2);
}

.process-card:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 20px;
    right: -6px;
    width: 8px;
    height: 8px;
    border-top: 2px solid #1E7A46;
    border-right: 2px solid #1E7A46;
    transform: rotate(45deg);
    z-index: 2;
}

.process-card-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 14px;
}

.process-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #EAF7EF;
    color: #1E7A46;
    font-size: 0.875rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #1E7A46;
    margin-bottom: 10px;
    position: relative;
    z-index: 2;
}

.process-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.process-icon svg {
    display: block;
    width: 100%;
    height: 100%;
}

.process-card-title {
    font-size: 1rem;
    font-weight: 700;
    color: #1E7A46;
    margin-bottom: 4px;
    line-height: 1.3;
}

.process-card-en {
    font-size: 0.68rem;
    font-weight: 500;
    color: #94A3B8;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.process-card-desc {
    font-size: 0.8125rem;
    color: #475569;
    line-height: 1.55;
}

.process-cta {
    text-align: center;
}

.process-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #1E7A46, #2D9D5C);
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.process-btn:hover {
    box-shadow: 0 6px 20px rgba(30, 122, 70, 0.3);
    transform: translateY(-1px);
}

.process-btn svg {
    transition: transform 0.3s ease;
}

.process-btn:hover svg {
    transform: translateX(3px);
}

/* Tablet 3x2 */
@media (max-width: 1024px) {
    .process-track {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    .process-track::before,
    .process-card:not(:last-child)::after {
        display: none;
    }
    .process-card {
        padding: 24px;
    }
    .process-card-left {
        margin-bottom: 14px;
    }
    .process-num {
        margin-bottom: 14px;
    }
    .process-icon {
        margin-bottom: 0;
    }
}

/* Mobile vertical */
@media (max-width: 768px) {
    .process-section {
        padding: 60px 0 80px;
    }
    .process-track {
        grid-template-columns: 1fr;
        gap: 24px;
        padding-left: 0;
    }
    .process-track::before {
        display: block;
        top: 24px;
        bottom: 24px;
        left: 23px;
        right: auto;
        width: 2px;
        height: auto;
        background: repeating-linear-gradient(to bottom, #1E7A46 0, #1E7A46 8px, transparent 8px, transparent 16px);
    }
    .process-card {
        flex-direction: row;
        align-items: flex-start;
        text-align: left;
        padding: 0;
        background: transparent;
        border: none;
        box-shadow: none;
        border-radius: 0;
    }
    .process-card:not(:last-child)::after {
        display: none;
    }
    .process-card-left {
        flex-shrink: 0;
        align-items: center;
        width: 48px;
        margin-bottom: 0;
    }
    .process-num {
        margin: 0;
        flex-shrink: 0;
    }
    .process-icon {
        width: 36px;
        height: 36px;
        margin: 10px 0 0;
    }
    .process-card-body {
        flex: 1;
        padding-top: 12px;
    }
    .process-card-title {
        font-size: 1.05rem;
    }
    .process-card-desc {
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .process-wrap {
        padding: 0 16px;
    }
    .process-title {
        font-size: 1.5rem;
    }
}

/* ==================== Contact Section ==================== */
.contact-section {
    padding: 90px 0;
    background: #F7FAF8;
    position: relative;
    z-index: 1;
}
.contact-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px;
}
.contact-headline {
    font-size: clamp(1.5rem, 2.8vw, 2.125rem);
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.25;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}
.contact-lead {
    font-size: 1rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* --- White Card --- */
.contact-card {
    max-width: 1180px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 38% 62%;
    gap: 0;
    background: #fff;
    border-radius: 20px;
    padding: 48px;
    box-shadow: 0 12px 40px rgba(0, 80, 40, 0.08);
    overflow: hidden;
}

/* --- Left Column --- */
.contact-left {
    padding-right: 48px;
    border-right: 1px solid var(--gray-200);
}
.contact-left-header {
    margin-bottom: 32px;
}
.contact-left-title {
    font-size: 1.375rem;
    font-weight: 800;
    color: #1E7A46;
    margin-bottom: 8px;
}
.contact-left-desc {
    font-size: 0.9375rem;
    color: var(--gray-500);
    line-height: 1.7;
}
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.contact-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}
.contact-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-50);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}
.contact-icon svg {
    width: 26px;
    height: 26px;
}
.contact-item h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}
.contact-item p {
    font-size: 1rem;
    color: var(--gray-500);
    line-height: 1.6;
}
.contact-item p a {
    color: var(--gray-500);
    text-decoration: none;
    transition: color 0.2s;
}
.contact-item p a:hover {
    color: var(--green-600);
}

/* --- Right Column --- */
.contact-right {
    padding-left: 48px;
}
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.form-input,
.form-textarea {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    color: var(--gray-800);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    outline: none;
    width: 100%;
}
.form-input:focus,
.form-textarea:focus {
    border-color: var(--green-500);
    box-shadow: 0 0 0 3px rgba(16,185,129,0.1);
    background: var(--white);
}
.form-textarea {
    resize: vertical;
    min-height: 150px;
    line-height: 1.6;
    grid-column: span 2;
}
.form-submit {
    background: linear-gradient(135deg, #F28C28, #F59A23);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 0 48px;
    width: 220px;
    height: 52px;
    font-size: 1.0625rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-normal);
    letter-spacing: 0.5px;
    margin-top: 8px;
}
.form-submit:hover {
    background: linear-gradient(135deg, #E57F0E, #F28C28);
    box-shadow: 0 8px 30px rgba(242, 140, 40, 0.35);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .contact-section { padding: 56px 0 64px; }
    .contact-header { margin-bottom: 32px; }
    .contact-card {
        grid-template-columns: 1fr;
        padding: 32px 24px;
        border-radius: 16px;
    }
    .contact-left {
        padding-right: 0;
        border-right: none;
        padding-bottom: 32px;
        border-bottom: 1px solid var(--gray-200);
        margin-bottom: 32px;
    }
    .contact-right {
        padding-left: 0;
    }
    .form-grid { grid-template-columns: 1fr; }
    .form-textarea { grid-column: span 1; }
    .form-submit { width: 100%; }
}
/* ==================== Footer ==================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 72px 0 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto 48px;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
}
.footer-brand .nav-logo { color: white; margin-bottom: 16px; }
.footer-brand p { font-size: 0.9375rem; line-height: 1.7; color: var(--gray-400); }

.footer h4 { font-size: 1rem; font-weight: 700; color: white; margin-bottom: 20px; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { color: var(--gray-400); font-size: 0.9375rem; transition: color var(--transition-fast); }
.footer-links a:hover { color: var(--green-400); }

.footer-contact { display: flex; flex-direction: column; gap: 14px; }
.footer-contact-item { display: flex; align-items: flex-start; gap: 10px; font-size: 0.9375rem; color: var(--gray-400); }
.footer-contact-item .fi { flex-shrink: 0; color: var(--green-400); padding-top: 2px; }
.footer-contact-item a { color: var(--gray-300); text-decoration: none; transition: color 0.2s; }
.footer-contact-item a:hover { color: var(--green-400); }

/* New footer layout (platform.html & solution pages) */
.footer-col { display: flex; flex-direction: column; }
.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}
.footer-logo img { height: 56px; width: auto; filter: brightness(0) invert(1); }
.footer-desc {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-400);
    margin-bottom: 20px;
}
.footer-social {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: auto;
}
.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.08);
    color: var(--gray-400);
    transition: all 0.2s ease;
}
.footer-social a:hover {
    background: var(--green-600);
    color: white;
    transform: translateY(-2px);
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li a { color: var(--gray-400); font-size: 0.9375rem; transition: color var(--transition-fast); }
.footer-links li a:hover { color: var(--green-400); }

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ==================== Back to Top ==================== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--green-600);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    z-index: 999;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
}
.back-to-top.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.back-to-top:hover { background: var(--green-700); transform: translateY(-4px); }

/* ==================== 系统架构与工作流程（优化版）==================== */

.sys-arch {
    padding: 80px 0 100px;
    background: #F7FBF8;
}

/* 宽度约束 960-1080px */
.sys-arch-wrap {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Header --- */
.sys-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px;
}
.sys-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #1E7A46;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    background: #EAF7EF;
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.sys-title {
    font-size: clamp(1.5rem, 2.8vw, 2.25rem);
    font-weight: 800;
    color: #1E7A46;
    line-height: 1.25;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}
.sys-title-highlight {
    color: #1E7A46;
    font-weight: 800;
}
.sys-subtitle {
    font-size: 0.875rem;
    color: #475569;
    line-height: 1.7;
    font-weight: 400;
}

/* --- Flow Container --- */
.sys-flow {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* --- Arrow --- */
.sys-arrow {
    display: flex;
    justify-content: center;
    padding: 6px 0;
}
.sys-arrow svg {
    opacity: 0.6;
}

/* --- Card Base --- */
.sys-card {
    background: #fff;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    padding: 18px 24px;
    display: flex;
    align-items: center;
    gap: 18px;
    transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}
.sys-card:hover {
    box-shadow: 0 6px 24px rgba(30, 122, 70, 0.1);
    border-color: rgba(30, 122, 70, 0.25);
    transform: translateY(-1px);
}

/* Card icon */
.sys-card-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #F3FAF5;
    border-radius: 10px;
    transition: background 0.3s ease;
}
.sys-card:hover .sys-card-icon {
    background: rgba(30, 122, 70, 0.1);
}
.sys-card-icon--lg {
    width: 56px;
    height: 56px;
}

/* Card main content */
.sys-card-main {
    flex: 1;
    min-width: 0;
}
.sys-card-num {
    font-size: 0.6875rem;
    font-weight: 700;
    color: #1E7A46;
    letter-spacing: 0.1em;
    opacity: 0.5;
    margin-bottom: 2px;
}
.sys-card-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: #1E7A46;
    line-height: 1.4;
    margin-bottom: 1px;
}
.sys-card-desc {
    font-size: 0.75rem;
    color: #64748B;
    font-weight: 400;
}

/* Card right tags */
.sys-card-tags {
    flex-shrink: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    max-width: 280px;
}
.sys-card-tags span {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 500;
    color: #1E7A46;
    background: #F3FAF5;
    padding: 4px 10px;
    border-radius: 6px;
    white-space: nowrap;
}

/* --- Layer 3: Core (Highlighted) --- */
.sys-card--core {
    background: linear-gradient(135deg, #F3FAF5 0%, #EAF7EF 100%);
    border-color: rgba(30, 122, 70, 0.2);
    border-width: 2px;
    position: relative;
    padding: 20px 28px;
}
.sys-card--core::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #1E7A46, #2D9D5C);
    border-radius: 12px 12px 0 0;
}
.sys-core-badge {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 0.625rem;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, #F28C28, #F59E0B);
    padding: 2px 10px;
    border-radius: 999px;
    letter-spacing: 0.1em;
}
.sys-card--core .sys-card-title {
    font-size: 1.0625rem;
}
.sys-card--core .sys-card-tags span {
    background: rgba(30, 122, 70, 0.12);
}

/* --- Compact Cards (Layers 4 & 5) --- */
.sys-card--compact {
    padding: 14px 24px;
    gap: 14px;
    flex-wrap: wrap;
}
.sys-card-num {
    flex-shrink: 0;
}
.sys-card-label {
    font-size: 0.9375rem;
    font-weight: 700;
    color: #1E7A46;
    flex-shrink: 0;
}
.sys-tags-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    flex: 1;
}
.sys-tag-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.75rem;
    font-weight: 500;
    color: #1E7A46;
    background: #F3FAF5;
    border: 1px solid #E2E8F0;
    padding: 6px 12px;
    border-radius: 8px;
    white-space: nowrap;
    transition: background 0.25s ease, border-color 0.25s ease;
}
.sys-tag-item:hover {
    background: #EAF7EF;
    border-color: rgba(30, 122, 70, 0.2);
}
.sys-tag-item svg {
    flex-shrink: 0;
    opacity: 0.8;
}
.sys-tag-item--scenario {
    background: #fff;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .sys-card-tags {
        max-width: 220px;
    }
}

@media (max-width: 768px) {
    .sys-arch {
        padding: 60px 0 80px;
    }
    .sys-header {
        margin-bottom: 36px;
    }
    .sys-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 16px 20px;
    }
    .sys-card-tags {
        max-width: 100%;
    }
    .sys-card--compact {
        flex-direction: row;
        align-items: center;
    }
    .sys-tags-row {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .sys-arch-wrap {
        padding: 0 16px;
    }
    .sys-card-tags {
        gap: 4px;
    }
    .sys-card-tags span {
        font-size: 0.625rem;
        padding: 3px 8px;
    }
    .sys-tags-row {
        gap: 6px;
    }
    .sys-tag-item {
        font-size: 0.6875rem;
        padding: 5px 10px;
    }
}



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

@media (max-width: 768px) {
    :root { --nav-height: 64px; }

    .nav {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
    .nav-inner { height: var(--nav-height); padding: 0 20px; }
    .nav-left { width: 100%; justify-content: space-between; margin-right: 0; }
    .nav-logo { margin-right: 0; }
    .nav-logo-img { height: 50px; }
    .nav-toggle { display: flex; }
    .nav-cta { display: none; }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 85%;
        max-width: 360px;
        height: calc(100dvh - var(--nav-height));
        max-height: calc(100dvh - var(--nav-height));
        background: white;
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        padding: 32px 24px 24px;
        gap: 4px;
        transform: translateX(-100%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        overflow-y: auto;
        box-shadow: 4px 0 24px rgba(0,0,0,0.12);
    }
    .nav-links.open { transform: translateX(0); }
    .nav-links a { font-size: 1.0625rem; padding: 10px 0; display: block; }
    .nav-cta-mobile { display: block; margin-top: auto; padding-top: 24px; }
    .nav-cta--mobile {
        display: block !important;
        text-align: center;
        margin-left: 0;
        border-radius: 12px;
        padding: 14px 24px;
        font-size: 1rem;
    }

    /* Mobile dropdown */
    .nav-dropdown { width: 100%; }
    .nav-dropdown-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        padding: 10px 0;
        cursor: pointer;
    }
    .nav-dropdown-menu {
        position: static !important;
        width: 100%;
        min-width: 0;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
        box-shadow: none !important;
        border: none !important;
        padding: 0 0 0 12px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
        background: #ffffff;
        border-radius: 10px;
        margin-top: 4px;
    }
    .nav-dropdown.open > .nav-dropdown-menu {
        max-height: min(72dvh, 720px);
        padding: 6px 0 6px 12px;
    }
    .nav-dropdown.open > .nav-dropdown-toggle .nav-arrow {
        transform: rotate(180deg);
    }
    .nav-dropdown-menu li {
        margin-bottom: 2px;
    }
    .nav-dropdown-menu li:last-child {
        margin-bottom: 0;
    }
    .nav-dropdown-menu li a {
        display: block;
        padding: 12px 14px;
        border-radius: 8px;
        text-decoration: none;
        transition: background 0.2s ease;
        border-left: 3px solid transparent;
    }
    .nav-dropdown-menu li a:hover {
        background: #ffffff;
        border-left-color: var(--green-500);
    }
    .nav-dropdown-menu .nav-dropdown-title {
        font-size: 0.9375rem;
        line-height: 1.4;
    }
    .nav-dropdown-menu .nav-dropdown-desc {
        font-size: 0.75rem;
        margin-top: 3px;
        line-height: 1.4;
    }

    .hero { height: 80vh; min-height: 500px; }
    .hero-arrows { display: none; }
    .hero-dots { bottom: 24px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-inner { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

    .section { padding: 64px 0; }
    .section-header { margin-bottom: 40px; }

    .btn { padding: 12px 24px; font-size: 0.9375rem; }
}

@media (max-width: 480px) {
    :root { --nav-height: 58px; }
    .nav-inner { padding: 0 18px; }
    .nav-logo-img { height: 46px; }
    .hero-content h1 { font-size: 1.5rem; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .nav-links { width: min(92vw, 360px); padding: 24px 20px 20px; }
    .nav-cta--mobile { padding: 12px 20px; font-size: 0.9375rem; }
}


/* Homepage system banner redesign */
.hero {
    height: min(780px, calc(100vh - 32px));
    min-height: 640px;
    max-height: 780px;
    align-items: stretch;
    background: #eef7f2;
}
.hero-slide {
    align-items: stretch;
    justify-content: flex-start;
    pointer-events: none;
}
.hero-slide.active { pointer-events: auto; }
.hero-slide-bg {
    background-position: 64% center;
    filter: none;
    transform: scale(1.025);
}
.hero-slide:nth-child(2) .hero-slide-bg { background-position: 66% center; }
.hero-slide:nth-child(3) .hero-slide-bg { background-position: 64% center; }
.hero-slide:nth-child(4) .hero-slide-bg { background-position: 66% center; }
.hero-overlay {
    background: linear-gradient(90deg, rgba(247,252,249,0.99) 0%, rgba(247,252,249,0.96) 30%, rgba(247,252,249,0.68) 47%, rgba(247,252,249,0.08) 67%, rgba(247,252,249,0) 100%);
}
.hero-content {
    width: min(1280px, 100%);
    max-width: none;
    margin: 0 auto;
    padding: calc(var(--nav-height) + 74px) 40px 88px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    text-align: left;
    color: #10251a;
}
.hero-content > * { max-width: 610px; }
.hero-content .hero-badge {
    margin-bottom: 22px;
    padding: 7px 13px;
    color: #087a50;
    background: rgba(226,246,236,0.94);
    border: 1px solid #a8dcc2;
    border-radius: 6px;
    backdrop-filter: none;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}
.hero-content h1 {
    margin-bottom: 20px;
    color: #10251a;
    font-size: clamp(2.35rem, 4.2vw, 4.25rem);
    line-height: 1.07;
    letter-spacing: 0;
}
.hero-content p {
    margin: 0 0 32px;
    color: #415f50;
    font-size: clamp(1rem, 1.55vw, 1.22rem);
    line-height: 1.65;
    opacity: 1;
}
.hero-buttons {
    justify-content: flex-start;
    gap: 12px;
}
.hero .btn {
    min-height: 48px;
    padding: 0 24px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 700;
}
.hero .btn-primary {
    background: #087a50;
    box-shadow: 0 8px 22px rgba(8,122,80,0.22);
}
.hero .btn-primary:hover { background: #065f46; }
.hero .btn-outline {
    color: #116b49;
    background: rgba(255,255,255,0.82);
    border-color: rgba(17,107,73,0.42);
    backdrop-filter: blur(6px);
}
.hero .btn-outline:hover {
    color: #065f46;
    background: #fff;
    border-color: #087a50;
}
.hero-slide .hero-badge,
.hero-slide .hero-content h1,
.hero-slide .hero-content p,
.hero-slide .hero-buttons {
    opacity: 0;
    animation: none;
}
.hero-slide.active .hero-badge { animation: heroCopyIn .6s ease .08s both; }
.hero-slide.active .hero-content h1 { animation: heroCopyIn .65s ease .16s both; }
.hero-slide.active .hero-content p { animation: heroCopyIn .65s ease .24s both; }
.hero-slide.active .hero-buttons { animation: heroCopyIn .65s ease .32s both; }
.hero-dots {
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    width: min(360px, calc(100% - 80px));
    justify-content: center;
}
.hero-dots button {
    width: 28px;
    height: 4px;
    border-radius: 2px;
    background: rgba(8,122,80,0.28);
}
.hero-dots button.active {
    width: 54px;
    height: 4px;
    border-radius: 2px;
    background: #087a50;
}
@keyframes heroCopyIn {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 900px) {
    .hero {
        height: min(760px, calc(100vh - 10px));
        min-height: 650px;
        max-height: 760px;
    }
    .hero-slide-bg,
    .hero-slide:nth-child(2) .hero-slide-bg,
    .hero-slide:nth-child(3) .hero-slide-bg,
    .hero-slide:nth-child(4) .hero-slide-bg { background-position: 68% center; }
    .hero-overlay {
        background: linear-gradient(90deg, rgba(247,252,249,0.98) 0%, rgba(247,252,249,0.93) 48%, rgba(247,252,249,0.46) 70%, rgba(247,252,249,0.08) 100%);
    }
    .hero-content { padding: calc(var(--nav-height) + 54px) 28px 78px; }
    .hero-content > * { max-width: 530px; }
    .hero-content h1 { font-size: clamp(2.1rem, 7vw, 3.35rem); }
    .hero-dots { left: 50%; transform: translateX(-50%); width: min(340px, calc(100% - 56px)); bottom: 24px; justify-content: center; }
}
@media (max-width: 600px) {
    .hero {
        height: clamp(560px, 82svh, 680px);
        min-height: 560px;
        max-height: 680px;
    }
    .hero-slide-bg,
    .hero-slide:nth-child(2) .hero-slide-bg,
    .hero-slide:nth-child(3) .hero-slide-bg,
    .hero-slide:nth-child(4) .hero-slide-bg {
        background-position: 58% center;
        transform: none;
    }
    .hero-overlay {
        background:
            linear-gradient(180deg, rgba(247,252,249,0.78) 0%, rgba(247,252,249,0.93) 40%, rgba(247,252,249,0.99) 100%),
            linear-gradient(90deg, rgba(247,252,249,0.96) 0%, rgba(247,252,249,0.72) 58%, rgba(247,252,249,0.28) 100%);
    }
    .hero-content {
        justify-content: flex-end;
        padding: calc(var(--nav-height) + 34px) 20px 72px;
    }
    .hero-content > * { max-width: 100%; }
    .hero-content .hero-badge { margin-bottom: 15px; }
    .hero-content h1 { font-size: clamp(1.85rem, 8vw, 2.15rem); line-height: 1.12; margin-bottom: 16px; }
    .hero-content p { font-size: 0.95rem; line-height: 1.55; margin-bottom: 20px; }
    .hero-buttons { width: 100%; flex-direction: column; align-items: stretch; }
    .hero .btn { width: 100%; min-height: 46px; }
    .hero-dots { left: 50%; transform: translateX(-50%); width: min(320px, calc(100% - 40px)); bottom: 22px; justify-content: center; }
}



/* Mobile/slider stability fixes */
.hero-slide {
    visibility: hidden;
    z-index: 0;
}
.hero-slide.active {
    visibility: visible;
    z-index: 1;
}
.hero-slide.active .hero-badge,
.hero-slide.active .hero-content h1,
.hero-slide.active .hero-content p,
.hero-slide.active .hero-buttons {
    opacity: 1;
    transform: none;
    animation: none;
}

/* Make mobile hero images visible while keeping text readable */
@media (max-width: 600px) {
    .hero-slide-bg,
    .hero-slide:nth-child(2) .hero-slide-bg,
    .hero-slide:nth-child(3) .hero-slide-bg,
    .hero-slide:nth-child(4) .hero-slide-bg {
        background-position: 62% center;
        filter: contrast(1.06) saturate(1.05);
    }
    .hero-overlay {
        background:
            linear-gradient(180deg, rgba(247,252,249,0.08) 0%, rgba(247,252,249,0.18) 38%, rgba(247,252,249,0.62) 100%),
            linear-gradient(90deg, rgba(247,252,249,0.58) 0%, rgba(247,252,249,0.24) 52%, rgba(247,252,249,0.04) 100%);
    }
    .hero-content h1,
    .hero-content p {
        text-shadow: 0 1px 0 rgba(255,255,255,0.9), 0 10px 24px rgba(255,255,255,0.55);
    }
}

/* Mobile hero composition refinement: clearer image area + readable copy area */
@media (max-width: 600px) {
    .hero {
        height: 720px;
        min-height: 720px;
        max-height: 720px;
        background: #f3faf6;
    }
    .hero-slide-bg,
    .hero-slide:nth-child(2) .hero-slide-bg,
    .hero-slide:nth-child(3) .hero-slide-bg,
    .hero-slide:nth-child(4) .hero-slide-bg {
        background-size: auto 58%;
        background-position: 58% 56px;
        background-repeat: no-repeat;
        filter: contrast(1.08) saturate(1.08);
    }
    .hero-slide:nth-child(2) .hero-slide-bg { background-position: 61% 58px; }
    .hero-slide:nth-child(3) .hero-slide-bg { background-position: 56% 58px; }
    .hero-slide:nth-child(4) .hero-slide-bg { background-position: 58% 58px; }
    .hero-overlay {
        background:
            linear-gradient(180deg, rgba(243,250,246,0) 0%, rgba(243,250,246,0.08) 34%, rgba(243,250,246,0.88) 56%, #f3faf6 100%),
            linear-gradient(90deg, rgba(243,250,246,0.18) 0%, rgba(243,250,246,0.02) 48%, rgba(243,250,246,0) 100%);
    }
    .hero-content {
        justify-content: flex-end;
        padding: 360px 20px 70px;
    }
    .hero-content .hero-badge {
        margin-bottom: 12px;
        background: rgba(232, 248, 239, 0.96);
        box-shadow: 0 8px 22px rgba(15, 84, 58, 0.08);
    }
    .hero-content h1 {
        font-size: clamp(1.7rem, 7.4vw, 2rem);
        line-height: 1.13;
        margin-bottom: 12px;
        text-shadow: none;
    }
    .hero-content p {
        margin-bottom: 16px;
        color: #385649;
        text-shadow: none;
    }
    .hero-buttons { gap: 10px; }
    .hero .btn { min-height: 44px; }
    .hero-dots { bottom: 18px; }
}

/* Keep every mobile hero slide on the same layout after carousel changes */
@media (max-width: 600px) {
    .hero-slide.active {
        align-items: stretch;
        justify-content: flex-start;
    }
    .hero-slide.active .hero-content {
        width: 100%;
        height: 100%;
        max-width: none;
        justify-content: flex-end;
        align-items: flex-start;
        text-align: left;
        padding: 360px 20px 70px;
    }
    .hero-slide.active .hero-content > * {
        max-width: 100%;
    }
}

/* Robust mobile hero positioning independent of carousel animation state */
@media (max-width: 600px) {
    .hero-slide .hero-content,
    .hero-slide.active .hero-content {
        position: absolute;
        left: 0;
        right: 0;
        top: auto;
        bottom: 58px;
        width: 100%;
        height: auto;
        min-height: 0;
        max-width: none;
        display: block;
        padding: 0 20px;
        text-align: left;
        transform: none;
    }
    .hero-content .hero-badge {
        display: inline-block;
    }
    .hero-content h1,
    .hero-content p,
    .hero-buttons {
        max-width: 100%;
    }
}

/* Desktop hero image scale refinement */
@media (min-width: 901px) {
    .hero-slide-bg {
        background-repeat: no-repeat;
    }
    .hero-slide:nth-child(2) .hero-slide-bg {
        background-size: auto 88%;
        background-position: 78% center;
    }
}

/* Desktop hero final balance */
@media (min-width: 901px) {
    .hero {
        height: min(720px, calc(100vh - 48px));
        min-height: 620px;
        max-height: 720px;
    }
    .hero-slide:nth-child(2) .hero-slide-bg {
        background-size: auto 78%;
        background-position: 84% center;
    }
}
/* Dedicated homepage banner assets: PC uses landscape images, mobile uses portrait crops. */
@media (min-width: 901px) {
    .hero {
        height: min(720px, calc(100vh - 48px));
        min-height: 620px;
        max-height: 720px;
        background: #f3faf6;
    }

    .hero-slide-bg,
    .hero-slide:nth-child(2) .hero-slide-bg,
    .hero-slide:nth-child(3) .hero-slide-bg,
    .hero-slide:nth-child(4) .hero-slide-bg {
        background-size: cover;
        background-position: center center;
        background-repeat: no-repeat;
        filter: none;
        transform: none;
    }

    .hero-overlay {
        background: linear-gradient(90deg, rgba(247,252,249,0.98) 0%, rgba(247,252,249,0.88) 32%, rgba(247,252,249,0.42) 52%, rgba(247,252,249,0.06) 76%, rgba(247,252,249,0) 100%);
    }
}

@media (max-width: 600px) {
    .hero {
        height: 720px;
        min-height: 720px;
        max-height: 720px;
        background: #f3faf6;
    }

    .hero-slide:nth-child(1) .hero-slide-bg { background-image: url('../img/home-banner-01-mobile.opt.jpg') !important; }
    .hero-slide:nth-child(2) .hero-slide-bg { background-image: url('../img/home-banner-02-mobile.opt.jpg') !important; }
    .hero-slide:nth-child(3) .hero-slide-bg { background-image: url('../img/home-banner-03-mobile.opt.jpg') !important; }
    .hero-slide:nth-child(4) .hero-slide-bg { background-image: url('../img/home-banner-04-mobile.opt.jpg') !important; }

    .hero-slide-bg,
    .hero-slide:nth-child(2) .hero-slide-bg,
    .hero-slide:nth-child(3) .hero-slide-bg,
    .hero-slide:nth-child(4) .hero-slide-bg {
        background-size: cover;
        background-position: center top;
        background-repeat: no-repeat;
        filter: none;
        transform: none;
    }

    .hero-overlay {
        background: linear-gradient(180deg, rgba(243,250,246,0) 0%, rgba(243,250,246,0.06) 42%, rgba(243,250,246,0.82) 66%, #f3faf6 100%);
    }

    .hero-slide .hero-content,
    .hero-slide.active .hero-content {
        position: absolute;
        left: 0;
        right: 0;
        top: auto;
        bottom: 58px;
        width: 100%;
        height: auto;
        min-height: 0;
        max-width: none;
        display: block;
        padding: 0 20px;
        text-align: left;
        transform: none;
    }

    .hero-content .hero-badge {
        display: inline-block;
        margin-bottom: 12px;
        background: rgba(232, 248, 239, 0.96);
        box-shadow: 0 8px 22px rgba(15, 84, 58, 0.08);
    }

    .hero-content h1 {
        font-size: clamp(1.7rem, 7.4vw, 2rem);
        line-height: 1.13;
        margin-bottom: 12px;
        text-shadow: none;
    }

    .hero-content p {
        margin-bottom: 16px;
        color: #385649;
        text-shadow: none;
    }

    .hero-buttons {
        gap: 10px;
    }

    .hero .btn {
        min-height: 44px;
    }

    .hero-dots {
        bottom: 18px;
    }
}
/* SEO heading structure: carousel secondary slides use h2 but keep hero title styling. */
.hero-content h2 {
    margin-bottom: 20px;
    color: #10251a;
    font-size: clamp(2.35rem, 4.2vw, 4.25rem);
    font-weight: 800;
    line-height: 1.07;
    letter-spacing: 0;
    animation: fadeInUp 0.8s ease 0.15s both;
}
.hero-slide .hero-content h2 {
    opacity: 0;
    animation: none;
}
.hero-slide.active .hero-content h2 {
    opacity: 1;
    animation: heroCopyIn .65s ease .16s both;
}
@media (max-width: 900px) {
    .hero-content h2 { font-size: clamp(2.1rem, 7vw, 3.35rem); }
}
@media (max-width: 600px) {
    .hero-content h2 {
        font-size: clamp(1.7rem, 7.4vw, 2rem);
        line-height: 1.13;
        margin-bottom: 12px;
        text-shadow: none;
    }
}
/* Premium foreign-trade site polish */
:root {
    --premium-ink: #111827;
    --premium-muted: #64748b;
    --premium-line: rgba(15, 23, 42, 0.08);
    --premium-panel: #ffffff;
    --premium-green: #047857;
    --premium-green-dark: #065f46;
    --premium-accent: #d7a955;
    --premium-shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
}

body {
    color: var(--premium-ink);
    background: #f7faf8;
    text-rendering: geometricPrecision;
}

.nav {
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    background: #ffffff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: 0 12px 36px rgba(15, 23, 42, 0.05);
}

.nav-logo-img {
    filter: none;
}

.nav-logo-img--footer {
    filter: brightness(0) invert(1);
}

.nav-links > li > a,
.nav-dropdown-toggle {
    font-weight: 650;
    color: #1f2937;
}

.nav-links > li > a:hover,
.nav-dropdown-toggle:hover {
    color: var(--premium-green);
}

.nav-cta,
.btn-primary,
.sol-btn-primary,
.prod-btn-primary,
.contact-btn-primary,
.support-btn-primary {
    border-radius: 8px !important;
    background: linear-gradient(135deg, #0b8f66, #047857) !important;
    box-shadow: 0 14px 30px rgba(4, 120, 87, 0.22) !important;
}

.nav-cta:hover,
.btn-primary:hover,
.sol-btn-primary:hover,
.prod-btn-primary:hover,
.contact-btn-primary:hover,
.support-btn-primary:hover {
    background: linear-gradient(135deg, #047857, #065f46) !important;
    transform: translateY(-2px);
}

.btn-outline,
.sol-btn-secondary,
.prod-btn-secondary,
.contact-btn-secondary,
.support-btn-outline {
    border-radius: 8px !important;
}

.section-header h2,
.sol-section-header h2,
.prod-section-header h2,
.scn-section-header h2,
.platform-title,
.why-title,
.process-title,
.contact-headline {
    color: var(--premium-ink);
    letter-spacing: 0;
}

.section-header p,
.sol-section-header p,
.prod-section-header p,
.scn-section-header p,
.platform-desc,
.sellpoint-intro {
    color: var(--premium-muted);
}

.card,
.solution-card,
.product-card,
.scenario-card,
.prod-feature-card,
.prod-app-card,
.prod-related-card,
.series-card,
.scn-need-card,
.scn-related-card,
.platform-card,
.why-card,
.process-step,
.contact-card {
    border-radius: 8px !important;
    border: 1px solid var(--premium-line) !important;
    background: var(--premium-panel);
    box-shadow: var(--premium-shadow) !important;
}

.card:hover,
.solution-card:hover,
.product-card:hover,
.scenario-card:hover,
.prod-feature-card:hover,
.prod-app-card:hover,
.prod-related-card:hover,
.series-card:hover,
.scn-need-card:hover,
.scn-related-card:hover,
.platform-card:hover,
.why-card:hover,
.process-step:hover {
    transform: translateY(-4px);
    box-shadow: 0 26px 70px rgba(15, 23, 42, 0.12) !important;
}

.hero-badge,
.sol-tag,
.prod-tag,
.scn-tag,
.contact-eyebrow,
.support-eyebrow,
.sellpoint-tag {
    border-radius: 999px !important;
    border: 1px solid rgba(4, 120, 87, 0.16) !important;
    background: #dff8ec !important;
    color: var(--premium-green) !important;
    letter-spacing: 0.08em !important;
}

.footer {
    background: #0b1f18;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer h4,
.footer-brand p,
.footer-links a,
.footer-contact a,
.footer-contact span,
.footer-bottom {
    letter-spacing: 0;
}

@media (max-width: 768px) {
    .nav {
        background: #ffffff;
    }

    .card,
    .solution-card,
    .product-card,
    .scenario-card,
    .prod-feature-card,
    .prod-app-card,
    .series-card,
    .scn-need-card,
    .scn-related-card {
        box-shadow: 0 14px 34px rgba(15, 23, 42, 0.08) !important;
    }
}

/* Unified navigation background */
.nav,
.nav.scrolled {
    background: #ffffff !important;
}

.nav-dropdown-menu,
.nav-dropdown-menu li a,
.nav-links {
    background-color: #ffffff;
}

.nav-dropdown-menu li a:hover,
.nav-dropdown-menu li a:focus-visible {
    background: #ffffff !important;
}

@media (max-width: 1024px) {
    .nav,
    .nav.scrolled,
    .nav-links,
    .nav-dropdown-menu,
    .nav-dropdown-menu li a,
    .nav-dropdown-menu li a:hover,
    .nav-dropdown-menu li a:focus-visible {
        background: #ffffff !important;
        background-color: #ffffff !important;
    }
}