/* ========================================
   元天软件 - 企业官网样式
   风格：明亮科技蓝 (Bright Tech Blue)
   配色：主色 #1E6FFF / 辅助色 #FF6B35
   ======================================== */

/* ===== CSS Variables ===== */
:root {
    --color-primary: #1E6FFF;
    --color-primary-dark: #1558D0;
    --color-primary-light: #4D8BFF;
    --color-primary-lighter: #E8F2FF;
    --color-primary-bg: #F0F6FF;
    --color-accent: #FF6B35;
    --color-accent-light: #FFF3EE;
    --color-success: #2E7D32;
    --color-success-light: #E8F5E9;
    --color-purple: #7B1FA2;
    --color-white: #FFFFFF;
    --color-off-white: #F8FAFC;
    --color-gray-50: #F1F5F9;
    --color-gray-100: #E2E8F0;
    --color-gray-200: #CBD5E1;
    --color-gray-300: #94A3B8;
    --color-gray-400: #64748B;
    --color-gray-500: #475569;
    --color-gray-700: #334155;
    --color-gray-900: #0F172A;
    --color-text: #1E293B;
    --color-text-light: #64748B;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-primary: 0 4px 16px rgba(30, 111, 255, 0.25);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

/* ===== Reset & Base ===== */
*, *::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(--color-text);
    background: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 24px; font-size: 0.9rem; font-weight: 600;
    border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition);
    border: none; white-space: nowrap;
}


.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(30, 111, 255, 0.35);
}
.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-gray-200);
}
.btn-outline:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-lighter);
    color: var(--color-primary-dark);
}
.btn-outline-light {
    background: transparent;
    color: var(--color-primary);
    border: 1.5px solid var(--color-gray-200);
}
.btn-outline-light:hover {
    background: rgba(30, 111, 255, 0.06);
    border-color: var(--color-primary);
}
.btn-lg { padding: 14px 36px; font-size: 1rem; }
.btn-full { width: 100%; padding: 14px; font-size: 1rem; }

/* ===== Arrow Icons ===== */
.arrow-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    margin-left: 6px;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    flex-shrink: 0;
}
.arrow-icon svg {
    display: none;
}
.arrow-icon::after {
    content: '';
    width: 11px;
    height: 11px;
    background-color: currentColor;
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 10h12v4H4z'/%3E%3Cpath d='M14 6l8 6-8 6V6z'/%3E%3C/svg%3E") no-repeat center;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 10h12v4H4z'/%3E%3Cpath d='M14 6l8 6-8 6V6z'/%3E%3C/svg%3E") no-repeat center;
    -webkit-mask-size: contain;
    mask-size: contain;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.btn:hover .arrow-icon { transform: translateX(4px); }
.btn:hover .arrow-icon::after { transform: translateX(1px); }
.btn:hover .arrow-icon.left { transform: translateX(-4px) rotate(180deg); }
.detail-back-link:hover .arrow-icon.left,
.back-home a:hover .arrow-icon.left { transform: translateX(-4px) rotate(180deg); }
.arrow-icon.left {
    transform: rotate(180deg);
    margin-left: 0;
    margin-right: 6px;
}


.process-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    color: var(--color-primary);
    margin: 0 3px;
}
.process-arrow svg {
    display: none;
}
.process-arrow::after {
    content: '';
    width: 12px;
    height: 12px;
    background-color: currentColor;
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 10h12v4H4z'/%3E%3Cpath d='M14 6l8 6-8 6V6z'/%3E%3C/svg%3E") no-repeat center;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 10h12v4H4z'/%3E%3Cpath d='M14 6l8 6-8 6V6z'/%3E%3C/svg%3E") no-repeat center;
    -webkit-mask-size: contain;
    mask-size: contain;
}

.nav-link .arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    opacity: 0.6;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-link .arrow svg {
    width: 10px;
    height: 10px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}
.nav-item.dropdown:hover .arrow { transform: rotate(180deg); }

/* Honors arrows */
.honors-arrow svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}

/* Back to top arrow */
.back-to-top svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}


/* ===== Header ===== */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 14px 0;
    transition: background 0.3s ease, padding 0.3s ease, backdrop-filter 0.3s ease, transform 0.35s ease;
    background: transparent;
}
.header-hidden {
    transform: translateY(-100%);
}
.header > .container {
    transition: transform 0.35s ease;
}
.header.scrolled {
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    padding: 8px 0;
    box-shadow: 0 2px 24px rgba(0, 0, 0, 0.07);
}
.header.header-hidden > .container { transform: translateY(-100%); }
.header-inner {
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo { display: flex; align-items: center; flex-shrink: 0; }
.logo-img { height: 38px; width: auto; object-fit: contain; transition: height 0.3s ease; }
.header.scrolled .logo-img { height: 32px; }

/* Nav */
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-link {
    display: flex; align-items: center; gap: 4px;
    padding: 8px 16px; font-size: 0.9rem; font-weight: 500;
    color: var(--color-gray-700);
    border-radius: var(--radius-sm); transition: var(--transition);
    position: relative;
    white-space: nowrap;
}
.nav-link::after {
    content: '';
    position: absolute; bottom: 2px; left: 16px; right: 16px;
    height: 2px; background: var(--color-primary);
    transform: scaleX(0); transition: transform 0.3s ease;
    border-radius: 1px;
}
.header:not(.scrolled) .nav-link::after { background: var(--color-primary); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.header.scrolled .nav-link { color: var(--color-gray-700); }
.nav-link:hover, .nav-link.active {
    color: var(--color-primary);
    background: rgba(30, 111, 255, 0.06);
}
.header:not(.scrolled) .nav-link:hover,
.header:not(.scrolled) .nav-link.active {
    color: var(--color-primary);
    background: rgba(30, 111, 255, 0.08);
}
.nav-link .arrow { font-size: 0.6rem; opacity: 0.5; transition: transform 0.3s; }
.nav-item.dropdown:hover .arrow { transform: rotate(180deg); }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
    position: absolute; top: calc(100% + 6px); left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: var(--color-white); border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg); padding: 20px 24px;
    min-width: 760px; width: 760px;
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.dropdown-menu::before {
    content: ''; position: absolute;
    top: -6px; left: 0; right: 0; height: 6px;
}
.nav-item.dropdown:hover .dropdown-menu {
    opacity: 1; visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}
.dropdown-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.dropdown-grid-4 { grid-template-columns: repeat(4, 1fr); gap: 16px; }
.dropdown-col h4 {
    font-size: 0.78rem; font-weight: 700; color: var(--color-primary);
    margin-bottom: 6px; padding-bottom: 6px;
    border-bottom: 1.5px solid var(--color-primary-lighter);
}
.dropdown-col h4 + h4,
.dropdown-col a + h4 { margin-top: 12px; }
.dropdown-col h4 a {
    color: inherit; text-decoration: none; display: block;
    transition: all 0.2s ease;
    padding: 4px 8px; margin: 0 -8px;
    border-radius: var(--radius-sm);
}
.dropdown-col h4 a:hover {
    color: var(--color-primary-dark);
    background: rgba(30, 111, 255, 0.08);
    transform: translateX(3px);
}
.dropdown-col a {
    display: block; padding: 5px 8px; margin: 1px 0; font-size: 0.8rem;
    color: var(--color-text-light); transition: all 0.2s ease;
    border-radius: var(--radius-sm);
    text-decoration: none;
}
.dropdown-col a:hover {
    color: var(--color-primary);
    background: rgba(30, 111, 255, 0.08);
    transform: translateX(4px);
}

/* ===== Products Global Map ===== */
.products-global-map { margin-bottom: 24px; }
.pgm-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.pgm-card {
    background: var(--color-white); border-radius: var(--radius-md);
    padding: 22px; box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-100);
    transition: all 0.3s ease;
}
.pgm-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-lighter);
}
.pgm-card h4 {
    font-size: 0.95rem; font-weight: 700; color: var(--color-primary);
    margin-bottom: 12px; padding-bottom: 10px;
    border-bottom: 2px solid var(--color-primary-lighter);
}
.pgm-card ul { list-style: none; padding: 0; margin: 0; }
.pgm-card li {
    font-size: 0.85rem; color: var(--color-text-light);
    padding: 5px 0; transition: all 0.2s ease;
}
.pgm-card li[data-module] {
    cursor: pointer; position: relative; padding-left: 12px;
}
.pgm-card li[data-module]::before {
    content: '›'; position: absolute; left: 0; top: 4px;
    color: var(--color-primary); opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.pgm-card li[data-module]:hover,
.pgm-card li[data-module]:focus {
    color: var(--color-primary); padding-left: 16px; outline: none;
}
.pgm-card li[data-module]:hover::before,
.pgm-card li[data-module]:focus::before { opacity: 1; transform: translateX(2px); }
@media (max-width: 1024px) {
    .pgm-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .pgm-grid { grid-template-columns: 1fr; }
}

.header-dark:not(.scrolled) .nav-link { color: rgba(255,255,255,0.95); }
.header-dark:not(.scrolled) .nav-link:hover,
.header-dark:not(.scrolled) .nav-link.active {
    color: var(--color-white);
    background: rgba(255,255,255,0.12);
}
.header-dark:not(.scrolled) .nav-link::after { background: var(--color-white); }
.header-dark:not(.scrolled) .header-actions .btn-outline {
    border-color: rgba(255,255,255,0.55);
    color: var(--color-white);
    background: rgba(255,255,255,0.08);
}
.header-dark:not(.scrolled) .header-actions .btn-outline:hover {
    background: rgba(255,255,255,0.18);
    border-color: rgba(255,255,255,0.75);
}
.header-dark:not(.scrolled) .lang-btn { color: rgba(255,255,255,0.85); }
.header-dark:not(.scrolled) .lang-btn:hover:not(.active) { color: var(--color-white); }
.header-dark:not(.scrolled) .lang-divider { color: rgba(255,255,255,0.3); }
.header-dark:not(.scrolled) .mobile-toggle span { background: var(--color-white); }

/* Header Actions */
.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.header-actions .btn { padding: 9px 20px; font-size: 0.85rem; font-weight: 600; }
.header-actions .btn-outline {
    border-color: var(--color-gray-200);
    color: var(--color-primary);
}
.header-actions .btn-outline:hover {
    border-color: var(--color-primary);
    background: rgba(30, 111, 255, 0.06);
    color: var(--color-primary-dark);
}
.header.scrolled .header-actions .btn-outline {
    border-color: var(--color-gray-200);
    color: var(--color-primary);
}

/* Language Switch */
.lang-switch {
    display: flex; align-items: center; gap: 1px;
    padding: 3px 4px; border-radius: 20px;
    background: rgba(30, 111, 255, 0.14);
    border: 1px solid rgba(30, 111, 255, 0.35);
    margin-right: 2px;
    box-shadow: 0 2px 10px rgba(30, 111, 255, 0.1);
}
.header.scrolled .lang-switch {
    background: rgba(30, 111, 255, 0.1);
    border-color: rgba(30, 111, 255, 0.3);
    box-shadow: 0 2px 10px rgba(30, 111, 255, 0.08);
}
.lang-btn {
    padding: 4px 10px; border: none; border-radius: 16px;
    font-size: 0.8rem; font-weight: 700; cursor: pointer;
    background: transparent; color: rgba(15, 23, 42, 0.88);
    transition: var(--transition);
}
.header.scrolled .lang-btn { color: var(--color-gray-700); }
.lang-btn.active {
    background: var(--color-primary);
    color: var(--color-white) !important;
    box-shadow: 0 3px 12px rgba(30, 111, 255, 0.4);
}
.lang-btn:hover:not(.active) {
    color: var(--color-primary);
    background: rgba(30, 111, 255, 0.1);
}
.lang-divider {
    color: rgba(30, 111, 255, 0.4);
    font-size: 0.8rem;
    user-select: none;
}
.header.scrolled .lang-divider { color: rgba(30, 111, 255, 0.35); }
.header-dark:not(.scrolled) .lang-switch {
    background: rgba(30, 111, 255, 0.22);
    border-color: rgba(30, 111, 255, 0.45);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}
.header-dark:not(.scrolled) .lang-btn { color: rgba(255, 255, 255, 0.95); }
.header-dark:not(.scrolled) .lang-btn:hover:not(.active) { color: var(--color-white); background: rgba(255, 255, 255, 0.12); }
.header-dark:not(.scrolled) .lang-divider { color: rgba(255, 255, 255, 0.4); }

/* Mobile Toggle */
.mobile-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px; z-index: 1001;
}
.mobile-toggle span {
    display: block; width: 24px; height: 2px;
    background: var(--color-gray-700); border-radius: 2px; transition: var(--transition);
}
.header.scrolled .mobile-toggle span { background: var(--color-gray-700); }

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(ellipse at 5% 20%, rgba(30, 111, 255, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 95% 80%, rgba(30, 111, 255, 0.04) 0%, transparent 50%),
        linear-gradient(180deg, #F0F4FA 0%, #F8FAFC 40%, #EFF3F8 100%);
    overflow: hidden;
    padding-top: 80px;
}

/* Hero 背景装饰 */
.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(30, 111, 255, 0.04) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(30, 111, 255, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

/* Hero 左右分栏 */
/* Hero 左右分栏 */
.hero-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 60px 48px;
    gap: 60px;
    min-height: calc(100vh - 80px);
    position: relative;
    z-index: 1;
}

/* 左侧文字 */
.hero-left {
    flex: 1 1 auto;
    max-width: 720px;
    width: 100%;
    z-index: 1;
    padding-top: 0;
    text-align: center;
}

/* 右侧视频区（已隐藏） */
.hero-right {
    display: none;
}

/* 视频组件在 Hero 区域的适配 */
.hero-right .video-wrapper {
    max-width: 100%;
    margin: 0;
    text-align: left;
}
.hero-right .video-top {
    margin-bottom: 20px;
}
.hero-right .video-section-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: 10px;
    padding: 5px 16px;
    background: rgba(30, 111, 255, 0.1);
    border: 1px solid rgba(30, 111, 255, 0.18);
    border-radius: 50px;
}
.hero-right .video-section-title {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.3;
    margin: 0;
}
.hero-right .video-card {
    background: var(--color-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.hero-right .video-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(30, 111, 255, 0.12);
}
.hero-right .video-thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    background: #0F172A;
    cursor: pointer;
    overflow: hidden;
}
.hero-right .video-thumbnail video,
.hero-right .video-thumbnail iframe {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-right .video-badge {
    position: absolute;
    bottom: 12px;
    right: 12px;
    z-index: 5;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 5px;
    letter-spacing: 0.02em;
}
.hero-right .video-overlay {
    position: absolute;
    inset: 0;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at 30% 20%, rgba(30,111,255,0.12) 0%, transparent 60%);
    transform: translateZ(0);
    will-change: transform;
}
.hero-right .play-btn-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateZ(0);
}
.hero-right .play-ripple {
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.22);
    opacity: 0.85;
    will-change: transform, opacity;
    transform: translateZ(0);
}
.hero-right .play-ripple::after {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 1.5px solid rgba(255, 255, 255, 0.12);
    opacity: 0.85;
    will-change: transform, opacity;
    transform: translateZ(0);
}
.hero-right .video-thumbnail:hover .play-ripple {
    animation: ripple 1.6s ease-out 1;
}
.hero-right .video-thumbnail:hover .play-ripple::after {
    animation: ripple 1.6s ease-out 0.4s 1;
}
@keyframes ripple {
    0% { transform: scale(1) translateZ(0); opacity: 0.7; }
    100% { transform: scale(1.5) translateZ(0); opacity: 0; }
}
.hero-right .play-btn {
    position: relative;
    z-index: 1;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    filter: drop-shadow(0 8px 24px rgba(30, 111, 255, 0.5));
}
.hero-right .video-thumbnail:hover .play-btn {
    transform: scale(1.12);
}
.hero-right .video-thumbnail:hover .play-ripple {
    animation-duration: 1.3s;
}
.hero-right .video-features-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    margin-top: 20px;
    flex-wrap: wrap;
}
.hero-right .video-features-row .video-feature-item {
    color: var(--color-text-light);
    font-size: 0.82rem;
    font-weight: 500;
    padding: 4px 12px;
    transition: color 0.3s ease;
}
.hero-right .video-features-row .video-feature-item:hover {
    color: var(--color-primary);
}
.hero-right .vf-sep {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--color-gray-200);
    flex-shrink: 0;
}

/* 移除旧的 Canvas 相关样式 */
.hero-scene-canvas {
    display: none;
}

.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 20px;
    background: rgba(30, 111, 255, 0.08);
    border: 1px solid rgba(30, 111, 255, 0.18);
    border-radius: 50px; font-size: 0.85rem;
    color: var(--color-primary-dark); margin-bottom: 28px;
}
.badge-dot { width: 8px; height: 8px; background: var(--color-primary); border-radius: 50%; box-shadow: 0 0 8px rgba(30, 111, 255, 0.4); }
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.5); }
}
.hero-title {
    font-size: 3.2rem; font-weight: 800; color: var(--color-text);
    line-height: 1.15; margin-bottom: 24px; letter-spacing: -0.02em;
}
.hero-title span:first-child {
    background: linear-gradient(135deg, #1E6FFF 0%, #2563EB 50%, #1D4ED8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 1.05rem; color: var(--color-gray-500);
    line-height: 1.8; margin-bottom: 36px;
}
.hero-subtitle .highlight {
    color: var(--color-primary); font-weight: 700;
    font-size: 1.2rem;
}
.hero-cta {
    display: flex; gap: 14px; margin-bottom: 48px;
    justify-content: center;
}
.hero-cta .btn-outline-light {
    border-color: var(--color-gray-200);
}
.hero-stats {
    display: flex; gap: 0; padding-top: 40px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    justify-content: center;
}
.stat-item {
    display: flex; flex-direction: column; align-items: center;
    padding: 0 32px; position: relative;
    transition: transform 0.35s ease;
}
.stat-item:hover { transform: translateY(-6px); }
.stat-item + .stat-item::before {
    content: '';
    position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 1px; height: 40px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 1px;
}
.stat-number-row {
    display: flex; align-items: baseline; gap: 2px;
}
.stat-number { font-size: 2.6rem; font-weight: 800; color: var(--color-primary); line-height: 1.1; letter-spacing: -0.02em; }
.stat-plus, .stat-unit {
    font-size: 1.1rem; font-weight: 700; color: var(--color-primary);
}
.stat-label { font-size: 0.82rem; color: var(--color-gray-400); margin-top: 8px; letter-spacing: 0.02em; font-weight: 500; white-space: nowrap; }

/* Video Wrapper (全局基础样式，Hero 区通过 .hero-right 覆盖) */
.video-wrapper { max-width: 100%; margin: 0; text-align: left; }

/* ===== Section Common ===== */
section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
    display: inline-block; font-size: 0.8rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: var(--color-primary); margin-bottom: 16px;
    padding: 6px 18px;
    background: var(--color-primary-lighter);
    border-radius: 50px;
    border: 1px solid rgba(30,111,255,0.08);
}
.section-title {
    font-size: 2.4rem; font-weight: 800; color: var(--color-gray-900);
    margin-bottom: 16px; line-height: 1.3; letter-spacing: -0.01em;
}
.section-desc {
    font-size: 1.05rem; color: var(--color-text-light);
    max-width: 640px; margin: 0 auto; line-height: 1.7;
}
.section-footer { text-align: center; margin-top: 48px; }

/* ===== Cases ===== */
.cases { background: var(--color-off-white); }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
    background: var(--color-white); border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs); border: 1px solid var(--color-gray-50);
    overflow: hidden; transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}
.case-card::before {
    content: '';
    position: absolute; inset: 0; border-radius: var(--radius-md);
    border: 2px solid transparent;
    transition: border-color 0.35s ease;
    pointer-events: none; z-index: 1;
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.case-card:hover::before { border-color: var(--color-primary); }
.case-card-top {
    padding: 28px 24px 0; display: flex; align-items: center;
    gap: 14px;
}
.case-logo {
    width: 52px; height: 52px;
    border-radius: 12px;
    background: var(--color-primary-lighter);
    border: 1.5px solid #E2E8F0;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}
.case-logo img {
    width: 100%; height: 100%;
    object-fit: contain;
    padding: 4px;
}
.case-logo-text {
    font-size: 0.7rem; font-weight: 700; color: var(--color-primary);
}
.case-card-top-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.case-brand { font-size: 1.1rem; font-weight: 700; color: var(--color-primary-dark); }
.case-tag {
    display: inline-block;
    width: fit-content;
    padding: 4px 10px; background: var(--color-accent-light);
    color: var(--color-accent); border-radius: 50px;
    font-size: 0.72rem; font-weight: 600; white-space: nowrap;
}
.case-card-body { padding: 20px 24px 28px; }
.case-card-body p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.7; }
.case-card-brand { margin-top: 12px; padding-top: 12px; border-top: 1px solid #F1F5F9; font-size: 0.82rem; color: #7B1FA2; display: flex; align-items: center; gap: 6px; }
.case-card-brand .brand-icon { font-size: 0.85rem; }

/* ===== Platform Overview 全局架构图 ===== */
.platform-overview { background: var(--color-off-white); }
.overview-image-wrapper {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: 32px;
    border: 1px solid var(--color-gray-100);
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    cursor: zoom-in;
    overflow: hidden;
}
.overview-image-wrapper img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    display: block;
    transition: transform 0.4s ease;
}
.overview-image-wrapper:hover img { transform: scale(1.02); }
.overview-image-wrapper .zoom-hint {
    position: absolute;
    right: 44px;
    bottom: 44px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: rgba(15, 23, 42, 0.65);
    color: #fff;
    font-size: 0.82rem;
    border-radius: 999px;
    pointer-events: none;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}
.overview-image-wrapper:hover .zoom-hint {
    opacity: 1;
    transform: translateY(0);
}
.overview-image-wrapper .zoom-hint svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
}
@media (max-width: 768px) {
    .overview-image-wrapper .zoom-hint { display: none; }
}

/* ===== Products (1+1 模式) ===== */
.products { background: var(--color-white); }

/* 1+1 区块 */
.oneplus-section {
    background: var(--color-off-white);
    border-radius: var(--radius-xl);
    padding: 48px 44px;
    margin-bottom: 36px;
    border: 1px solid var(--color-gray-100);
}
.oneplus-section:last-child { margin-bottom: 0; }
.oneplus-label {
    display: inline-flex; align-items: center; gap: 12px;
    margin-bottom: 16px;
}
.oneplus-num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; background: var(--color-primary);
    color: var(--color-white); font-size: 1.3rem; font-weight: 800;
    border-radius: 50%; flex-shrink: 0;
}
.oneplus-label span:last-child {
    font-size: 0.95rem; font-weight: 700; color: var(--color-primary);
    letter-spacing: 0.02em;
}
.oneplus-subtitle {
    font-size: 1.5rem; font-weight: 700; color: var(--color-gray-900); margin-bottom: 12px;
}
.oneplus-desc {
    font-size: 0.95rem; color: var(--color-text-light); line-height: 1.8;
    margin-bottom: 32px; max-width: 860px;
}

/* 平台核心模块 */
.platform-modules {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
    margin-bottom: 28px;
}
@media (max-width: 1200px) {
    .platform-modules { grid-template-columns: repeat(3, 1fr); }
}
.platform-module {
    background: var(--color-white); padding: 24px 20px;
    border-radius: var(--radius-md); border: 1px solid var(--color-gray-50);
    transition: all 0.3s ease; text-align: center; cursor: pointer;
}
.platform-module:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-lighter);
}
.platform-module-icon {
    width: 48px; height: 48px; display: flex; align-items: center;
    justify-content: center; border-radius: var(--radius-sm);
    margin: 0 auto 14px; transition: transform 0.3s ease;
}
.platform-module:hover .platform-module-icon { transform: scale(1.08); }
.platform-module h5 { font-size: 0.9rem; font-weight: 700; color: var(--color-gray-900); margin-bottom: 6px; }
.platform-module p { font-size: 0.78rem; color: var(--color-text-light); line-height: 1.5; margin-bottom: 8px; }
.platform-module .module-more { font-size: 0.72rem; color: var(--color-primary); font-weight: 600; opacity: 0; transform: translateY(4px); transition: var(--transition); display: inline-flex; align-items: center; gap: 4px; }
.platform-module .module-more::after { content: '→'; transition: transform 0.2s ease; }
.platform-module:hover .module-more { opacity: 1; transform: translateY(0); }
.platform-module:hover .module-more::after { transform: translateX(3px); }

/* 产品功能详情弹窗 */
.product-modal { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease; }
.product-modal.active { opacity: 1; visibility: visible; }
.product-modal-backdrop { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.55); backdrop-filter: blur(4px); }
.product-modal-panel { position: relative; background: var(--color-white); border-radius: var(--radius-lg); padding: 40px 36px; max-width: 560px; width: calc(100% - 40px); max-height: 86vh; overflow-y: auto; box-shadow: var(--shadow-lg); transform: translateY(20px) scale(0.98); transition: transform 0.3s ease; }
.product-modal.active .product-modal-panel { transform: translateY(0) scale(1); }
.product-modal-close { position: absolute; top: 18px; right: 20px; width: 36px; height: 36px; border: none; background: var(--color-gray-50); border-radius: 50%; font-size: 1.5rem; line-height: 1; color: var(--color-gray-500); cursor: pointer; transition: var(--transition); display: flex; align-items: center; justify-content: center; }
.product-modal-close:hover { background: var(--color-gray-100); color: var(--color-gray-900); }
.product-modal-icon { width: 64px; height: 64px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.product-modal-icon svg { width: 34px; height: 34px; }
.product-modal-title { font-size: 1.5rem; font-weight: 800; color: var(--color-gray-900); margin-bottom: 10px; }
.product-modal-value { font-size: 1rem; color: var(--color-primary); font-weight: 600; margin-bottom: 24px; padding: 10px 14px; background: var(--color-primary-lighter); border-radius: var(--radius-sm); }
.product-modal-section { margin-bottom: 24px; }
.product-modal-section:last-child { margin-bottom: 0; }
.product-modal-section h4 { font-size: 1rem; font-weight: 700; color: var(--color-gray-900); margin-bottom: 12px; padding-left: 10px; border-left: 3px solid var(--color-primary); }
.product-modal-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.product-modal-list li { position: relative; padding-left: 22px; font-size: 0.9rem; color: var(--color-text); line-height: 1.6; }
.product-modal-list li::before { content: '✓'; position: absolute; left: 0; top: 0; color: var(--color-success); font-weight: 700; }
.product-modal-desc { font-size: 0.92rem; color: var(--color-text-light); line-height: 1.8; }

/* 平台特性 */
.platform-features {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.platform-feature-item {
    background: var(--color-white); padding: 12px 16px;
    border-radius: var(--radius-sm); border: 1px solid var(--color-gray-100);
    font-size: 0.82rem; font-weight: 600; color: var(--color-gray-700);
    text-align: center; transition: all 0.3s ease;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.platform-feature-item:hover {
    border-color: var(--color-primary); color: var(--color-primary);
    background: var(--color-primary-bg);
}

/* 解决方案网格 */
.solutions-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.solution-card {
    background: var(--color-white); padding: 32px 28px;
    border-radius: var(--radius-md); border: 1px solid var(--color-gray-50);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative; overflow: hidden;
}
.solution-card::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.4s ease;
}
.solution-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.solution-card:hover::after { transform: scaleX(1); }
.solution-icon {
    width: 64px; height: 64px; display: flex; align-items: center;
    justify-content: center; border-radius: 18px; margin-bottom: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
}
.solution-icon svg { display: block; }
.solution-card:hover .solution-icon { transform: scale(1.08) rotate(-3deg); box-shadow: 0 12px 28px rgba(0,0,0,0.12); }
.solution-card h4 { font-size: 1.1rem; font-weight: 700; color: var(--color-gray-900); margin-bottom: 10px; }
.solution-card > p { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.7; margin-bottom: 18px; }

.solution-tags {
    display: flex; flex-wrap: wrap; gap: 8px;
}
.solution-tags li {
    display: inline-block; padding: 4px 12px;
    background: var(--color-primary-bg); color: var(--color-primary);
    border-radius: 50px; font-size: 0.75rem; font-weight: 600;
    white-space: nowrap;
}

/* ===== Platform Highlight ===== */
.platform-highlight { background: var(--color-white); padding: 100px 0; }
.highlight-card {
    display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, #0F3B7A 100%);
    border-radius: var(--radius-xl); padding: 60px; position: relative; overflow: hidden;
    box-shadow: 0 20px 60px rgba(30,111,255,0.2);
}
.highlight-card::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 80% 50%, rgba(255,255,255,0.06) 0%, transparent 60%);
    pointer-events: none;
}
.highlight-content { position: relative; z-index: 1; }
.highlight-badge {
    display: inline-block; padding: 6px 16px;
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.9); border-radius: 50px;
    font-size: 0.8rem; font-weight: 600; margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.15);
}
.highlight-content h2 { font-size: 2.4rem; font-weight: 800; color: var(--color-white); margin-bottom: 18px; }
.highlight-content > p { font-size: 1.02rem; color: rgba(255, 255, 255, 0.75); line-height: 1.8; margin-bottom: 28px; }
.highlight-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 32px; }
.highlight-list li {
    position: relative; padding-left: 24px; color: rgba(255, 255, 255, 0.85);
    font-size: 0.92rem;
}
.highlight-list li::before {
    content: ''; position: absolute; left: 0; top: 8px;
    width: 8px; height: 8px; background: #60A5FA; border-radius: 50%;
    box-shadow: 0 0 8px rgba(96,165,250,0.5);
}
.highlight-content .btn-primary {
    background: var(--color-white); color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.highlight-content .btn-primary:hover {
    background: #F0F6FF;
    box-shadow: 0 8px 30px rgba(0,0,0,0.25);
    transform: translateY(-2px);
}

/* Code Window */
.code-window {
    background: #0F172A; border-radius: var(--radius-md);
    overflow: hidden; box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    position: relative; z-index: 1;
}
.code-header {
    display: flex; align-items: center; gap: 8px;
    padding: 14px 18px; background: #1E293B;
}
.code-dot { width: 10px; height: 10px; border-radius: 50%; }
.code-dot.red { background: #EF4444; }
.code-dot.yellow { background: #F59E0B; }
.code-dot.green { background: #22C55E; }
.code-title { color: #94A3B8; font-size: 0.75rem; margin-left: 8px; font-family: 'SF Mono', 'Monaco', monospace; }
.code-body { padding: 20px 24px; }
.code-body pre { margin: 0; }
.code-body code { font-family: 'SF Mono', 'Monaco', 'Fira Code', monospace; font-size: 0.85rem; line-height: 1.8; }
.code-keyword { color: #C084FC; }
.code-class { color: #60A5FA; }
.code-method { color: #FDE68A; }
.code-string { color: #34D399; }

/* ===== Honors 荣誉资质轮播 ===== */
.honors {
    background: var(--color-white);
    padding: 100px 0;
}
.honors-carousel {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0;
    max-width: 1000px;
    margin: 0 auto;
}
.honors-track-wrapper {
    flex: 1;
    overflow: hidden;
    border-radius: var(--radius-md);
}
.honors-track {
    display: flex;
    gap: 24px;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.honor-card {
    flex: 0 0 calc(33.333% - 16px);
    width: calc(33.333% - 16px);
    background: var(--color-off-white);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    text-align: center;
    border: 1px solid var(--color-gray-100);
    transition: all 0.35s ease;
    cursor: default;
}
.honor-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}
.honor-card-image {
    width: 100%;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
}
.honor-card-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    padding: 8px;
}
.honor-card-image .honor-placeholder {
    font-size: 3rem;
    color: var(--color-gray-200);
}
.honor-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 6px;
    line-height: 1.4;
}
.honor-card .honor-issuer {
    font-size: 0.78rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* 荣誉轮播箭头 */
.honors-arrow {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-white);
    border: 1.5px solid var(--color-gray-200);
    color: var(--color-gray-500);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    z-index: 2;
}
.honors-arrow:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-primary);
}
.honors-arrow.prev { margin-right: -22px; }
.honors-arrow.next { margin-left: -22px; }
.honors-arrow:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

/* 荣誉轮播指示器 */
.honors-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 28px;
}
.honors-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-gray-200);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: all 0.35s ease;
}
.honors-dot.active {
    background: var(--color-primary);
    width: 24px;
    border-radius: 4px;
}

/* ===== Service Model ===== */
.service-model { background: var(--color-off-white); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; justify-items: center; }
.service-card {
    background: var(--color-white); padding: 40px 28px;
    border-radius: var(--radius-md); box-shadow: var(--shadow-xs);
    border: 1px solid var(--color-gray-50); transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative; overflow: hidden; text-align: center; max-width: 360px; width: 100%;
}
.service-card::before {
    content: '';
    position: absolute; inset: 0; border-radius: var(--radius-md);
    border: 2px solid transparent; transition: border-color 0.35s ease;
    pointer-events: none;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card:hover::before { border-color: var(--color-primary); }
.service-num {
    font-size: 3rem; font-weight: 900; color: var(--color-primary-lighter);
    line-height: 1; margin-bottom: 14px; transition: color 0.3s ease;
}
.service-card:hover .service-num { color: rgba(30,111,255,0.15); }
.service-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--color-gray-900); margin-bottom: 10px; }
.service-card p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.7; }

/* ===== Pricing ===== */
.pricing { background: var(--color-white); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pricing-card {
    text-align: center; padding: 44px 28px;
    background: var(--color-off-white); border-radius: var(--radius-md);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1); border: 2px solid transparent;
    position: relative; overflow: hidden;
}
.pricing-card:hover {
    background: var(--color-white); border-color: var(--color-primary);
    box-shadow: var(--shadow-lg); transform: translateY(-6px);
}
.pricing-icon { margin-bottom: 22px; display: inline-flex; transition: transform 0.3s ease; }
.pricing-card:hover .pricing-icon { transform: scale(1.1); }
.pricing-card h4 { font-size: 1.05rem; font-weight: 700; color: var(--color-gray-900); margin-bottom: 10px; }
.pricing-card p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.65; }

/* ===== News ===== */
.news { background: var(--color-off-white); }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card {
    display: flex; gap: 20px; background: var(--color-white);
    padding: 28px; border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs); border: 1px solid var(--color-gray-50);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(30,111,255,0.15); }
.news-date-badge {
    display: flex; flex-direction: column; align-items: center;
    justify-content: center; width: 68px; height: 68px;
    background: var(--color-primary-lighter); border-radius: var(--radius-sm);
    flex-shrink: 0; transition: background 0.3s ease;
}
.news-card:hover .news-date-badge { background: rgba(30,111,255,0.15); }
.news-day { font-size: 1.5rem; font-weight: 800; color: var(--color-primary); line-height: 1; }
.news-month { font-size: 0.7rem; color: var(--color-primary-dark); font-weight: 600; }
.news-content { flex: 1; min-width: 0; }
.news-content h4 { font-size: 1rem; font-weight: 700; color: var(--color-gray-900); margin-bottom: 10px; line-height: 1.5; transition: color 0.3s ease; }
.news-card:hover .news-content h4 { color: var(--color-primary); }
.news-content p { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.6; margin-bottom: 14px; }
.news-meta { display: flex; gap: 12px; font-size: 0.8rem; color: var(--color-gray-300); align-items: center; flex-wrap: wrap; }
.news-tag {
    display: inline-block;
    padding: 2px 10px;
    background: var(--color-primary-lighter);
    color: var(--color-primary);
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 600;
}
.news-thumb {
    width: 120px;
    height: 80px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-gray-100);
    align-self: center;
}
.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
}
.news-card:hover .news-thumb img { transform: scale(1.08); }

/* ===== About ===== */
.about-section {
    padding: 80px 0;
    background: var(--color-white);
}
.about-intro {
    max-width: 1100px;
    margin: 0 auto 50px;
    text-align: center;
}
.about-intro p {
    font-size: 1.02rem;
    color: var(--color-text);
    line-height: 1.85;
    margin-bottom: 16px;
}
.about-intro p:first-child {
    white-space: nowrap;
}
.about-intro p strong {
    color: var(--color-primary);
    font-weight: 700;
}
.about-matrix {
    max-width: 850px;
    margin: 0 auto 40px;
}
.about-matrix-title {
    text-align: center;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 28px;
    position: relative;
}
.about-matrix-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--color-primary);
    margin: 12px auto 0;
    border-radius: 2px;
}
.about-matrix-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.about-matrix-card {
    background: var(--color-off-white);
    border: 1px solid var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: 36px 30px;
    text-align: center;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.about-matrix-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(30, 111, 255, 0.2);
    background: var(--color-white);
}
.about-matrix-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-lighter);
    border-radius: 16px;
    transition: all 0.3s ease;
}
.about-matrix-card:hover .about-matrix-icon {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.08);
}
.about-matrix-icon svg {
    width: 40px;
    height: 40px;
}
.about-matrix-card h4 {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 12px;
}
.about-matrix-card p {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.72;
}
.about-conclusion {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}
.about-conclusion p {
    font-size: 1.08rem;
    color: var(--color-gray-700);
    line-height: 1.8;
    padding: 28px 36px;
    background: linear-gradient(135deg, var(--color-primary-lighter) 0%, rgba(30, 111, 255, 0.03) 100%);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}
.about-conclusion p strong {
    color: var(--color-primary);
    font-weight: 700;
}

@media (max-width: 768px) {
    .about-matrix-grid {
        grid-template-columns: 1fr;
    }
    .about-intro p {
        font-size: 0.95rem;
        white-space: normal;
    }
    .about-intro p:first-child {
        white-space: normal;
    }
    .about-section {
        padding: 50px 0;
    }
}

/* ===== FAQ ===== */
.faq-section {
    padding: 80px 0;
    background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
}
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}
.faq-item {
    background: #FFFFFF;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    padding: 24px 28px;
    transition: all 0.3s ease;
}
.faq-item:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px rgba(30, 111, 255, 0.08);
}
.faq-question {
    font-size: 1rem;
    font-weight: 700;
    color: #1E293B;
    margin: 0 0 12px;
    line-height: 1.5;
}
.faq-answer p {
    font-size: 0.9rem;
    color: #475569;
    line-height: 1.8;
    margin: 0;
}
.faq-answer strong {
    color: #1E293B;
}
@media (max-width: 768px) {
    .faq-grid { grid-template-columns: 1fr; }
    .faq-section { padding: 50px 0; }
}

/* ===== Contact ===== */
.contact { background: var(--color-white); }
.contact-wrapper { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact-info h2 { font-size: 2rem; font-weight: 800; color: var(--color-gray-900); margin: 14px 0 16px; }
.contact-info > p { font-size: 1rem; color: var(--color-text-light); margin-bottom: 32px; }
.contact-details { display: flex; flex-direction: column; gap: 18px; margin-bottom: 32px; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; }
.contact-item-icon {
    width: 40px; height: 40px; display: flex; align-items: center;
    justify-content: center; background: var(--color-primary-lighter);
    border-radius: var(--radius-sm); flex-shrink: 0; color: var(--color-primary);
}
.contact-item strong { display: block; font-size: 0.9rem; color: var(--color-gray-900); margin-bottom: 2px; }
.contact-item span { font-size: 0.85rem; color: var(--color-text-light); }
.contact-qr { display: flex; align-items: center; gap: 16px; }
.qr-code svg { display: block; }
.qr-img { width: 120px; height: 120px; border-radius: var(--radius-md); object-fit: cover; }
.contact-qr span { font-size: 0.85rem; color: var(--color-text-light); }

/* Contact Form */
.contact-form {
    background: var(--color-off-white);
    padding: 40px; border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-100);
    box-shadow: var(--shadow-sm);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--color-gray-700); }
.form-group input, .form-group textarea, .form-group select {
    padding: 13px 16px; border: 1.5px solid var(--color-gray-100);
    border-radius: var(--radius-sm); font-size: 0.9rem;
    font-family: var(--font-sans); color: var(--color-text);
    background: var(--color-white); transition: all 0.25s ease; outline: none;
    appearance: none; -webkit-appearance: none;
}
.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%2364748B' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
    cursor: pointer;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(30, 111, 255, 0.08);
}
.form-group textarea { resize: vertical; min-height: 110px; }

/* ===== Footer ===== */
.footer {
    background: #0A0F1F; color: rgba(255,255,255,0.55);
    padding: 70px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 44px; padding-bottom: 50px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.footer-logo { display: flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 700; color: var(--color-white); margin-bottom: 16px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.75; }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; color: var(--color-white); margin-bottom: 20px; position: relative; }
.footer-col h4::after {
    content: '';
    position: absolute; bottom: -8px; left: 0;
    width: 20px; height: 2px;
    background: var(--color-primary);
    border-radius: 1px;
}
.footer-col a { display: block; font-size: 0.85rem; color: rgba(255,255,255,0.4); margin-bottom: 12px; transition: all 0.25s ease; }
.footer-col a:hover { color: var(--color-primary-light); padding-left: 6px; }
.footer-bottom { padding: 28px 0; text-align: center; font-size: 0.8rem; color: rgba(255,255,255,0.25); }
.footer-meta { margin-top: 8px; font-size: 0.75rem; color: rgba(255,255,255,0.15); }
.footer-meta a { color: rgba(255,255,255,0.25); text-decoration: none; transition: color 0.25s; }
.footer-meta a:hover { color: var(--color-primary-light); }

/* ===== Side Panel (右侧悬浮) ===== */
.side-panel {
    position: fixed; right: 16px; top: 50%; transform: translateY(-50%);
    display: flex; flex-direction: column; gap: 10px;
    z-index: 998;
}
.side-btn {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 6px; width: 60px; height: 60px; border: none; border-radius: var(--radius-sm);
    cursor: pointer; font-family: var(--font-sans);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 8px;
}
.side-btn-lead {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(30, 111, 255, 0.3);
}
.side-btn-lead:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(30, 111, 255, 0.4);
}
.side-btn-qr {
    background: var(--color-white);
    color: var(--color-primary);
    border: 1.5px solid var(--color-primary);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}
.side-btn-qr:hover {
    background: var(--color-primary-lighter);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(30, 111, 255, 0.15);
}
.side-btn-text {
    font-size: 0.65rem; font-weight: 600; line-height: 1; white-space: nowrap;
}

/* 留资/扫码 弹窗 */
.side-modal-overlay {
    position: fixed; inset: 0; background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
    z-index: 2000; display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: all 0.3s ease;
}
.side-modal-overlay.active {
    opacity: 1; visibility: visible; pointer-events: auto;
}
.side-modal {
    background: var(--color-white); border-radius: var(--radius-lg);
    padding: 40px 36px 32px; width: 420px; max-width: 90vw;
    box-shadow: var(--shadow-lg); position: relative;
    transform: translateY(20px); transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.side-modal-overlay.active .side-modal {
    transform: translateY(0);
}
.side-modal h3 {
    font-size: 1.3rem; font-weight: 700; color: var(--color-gray-900); margin-bottom: 8px;
}
.side-modal > p {
    font-size: 0.88rem; color: var(--color-text-light); margin-bottom: 24px; line-height: 1.6;
}
.side-modal-close {
    position: absolute; top: 14px; right: 14px;
    width: 32px; height: 32px; border: none; background: var(--color-gray-50);
    border-radius: 50%; cursor: pointer; display: flex; align-items: center;
    justify-content: center; color: var(--color-gray-400); transition: var(--transition);
}
.side-modal-close:hover { background: var(--color-gray-100); color: var(--color-gray-700); }
.side-form-group { margin-bottom: 14px; }
.side-form-group input, .side-form-group textarea {
    width: 100%; padding: 12px 16px; border: 1.5px solid var(--color-gray-100);
    border-radius: var(--radius-sm); font-size: 0.9rem; font-family: var(--font-sans);
    color: var(--color-text); background: var(--color-off-white);
    transition: all 0.25s ease; outline: none; resize: vertical;
}
.side-form-group input:focus, .side-form-group textarea:focus {
    border-color: var(--color-primary); background: var(--color-white);
    box-shadow: 0 0 0 4px rgba(30, 111, 255, 0.06);
}

/* 扫码弹窗 */
.side-modal-qr { text-align: center; width: 360px; }
.side-qr-img-wrapper {
    display: flex; align-items: center; justify-content: center;
    margin: 20px auto; padding: 16px;
    background: var(--color-off-white); border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-100);
}
.side-qr-img { width: 200px; height: 200px; object-fit: contain; border-radius: var(--radius-sm); }
.side-qr-tip { font-size: 0.85rem; color: var(--color-primary); font-weight: 600; margin-top: 12px; }

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed; bottom: 36px; right: 36px;
    width: 50px; height: 50px; background: var(--color-primary);
    color: var(--color-white); border: none; border-radius: 50%;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(30, 111, 255, 0.3);
    opacity: 0; visibility: hidden; transform: translateY(24px);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1); z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 32px rgba(30, 111, 255, 0.45);
    background: var(--color-primary-dark);
}

/* ===== Image Zoom Lightbox ===== */
.image-zoom-lightbox {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.image-zoom-lightbox.active {
    opacity: 1;
    visibility: visible;
}
.image-zoom-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(2, 6, 23, 0.88);
    backdrop-filter: blur(8px);
    cursor: zoom-out;
}
.image-zoom-container {
    position: relative;
    z-index: 1;
    width: 92vw;
    height: 86vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: var(--radius-lg);
}
.image-zoom-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
    cursor: grab;
    transform-origin: center center;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    -webkit-user-drag: none;
}
.image-zoom-img.is-dragging { cursor: grabbing; }
.image-zoom-img.is-zoomed { transition: none; }
.image-zoom-close,
.image-zoom-toolbar {
    position: absolute;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 10px;
}
.image-zoom-close {
    top: 18px;
    right: 18px;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    cursor: pointer;
    transition: all 0.2s ease;
    justify-content: center;
}
.image-zoom-close:hover { background: rgba(255, 255, 255, 0.22); transform: rotate(90deg); }
.image-zoom-close svg { width: 22px; height: 22px; stroke: currentColor; }
.image-zoom-toolbar {
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 12px;
    background: rgba(15, 23, 42, 0.72);
    border-radius: 999px;
    backdrop-filter: blur(6px);
}
.image-zoom-toolbar button {
    width: 38px;
    height: 38px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}
.image-zoom-toolbar button:hover { background: rgba(255, 255, 255, 0.25); }
.image-zoom-toolbar button:disabled { opacity: 0.35; cursor: not-allowed; }
.image-zoom-toolbar button svg { width: 18px; height: 18px; stroke: currentColor; }
.image-zoom-toolbar .zoom-level {
    min-width: 52px;
    text-align: center;
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
}
@media (max-width: 768px) {
    .image-zoom-container { width: 100vw; height: 100vh; border-radius: 0; }
    .image-zoom-toolbar { bottom: 18px; gap: 8px; padding: 7px 10px; }
    .image-zoom-toolbar button { width: 42px; height: 42px; }
    .image-zoom-close { top: 12px; right: 12px; }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(36px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
    opacity: 0; transform: translateY(36px);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-in-up.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-inner { flex-direction: column; padding: 48px 32px 40px; gap: 40px; min-height: auto; }
    .hero-left { flex: 1 1 auto; width: 100%; max-width: 640px; text-align: center; margin: 0 auto; }
    .hero-right { width: 100%; min-width: 0; }
    .hero-cta { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-title { font-size: 2.6rem; }
    .hero-stats { gap: 0; flex-wrap: wrap; justify-content: center; }
    .stat-item { padding: 18px 32px; align-items: center; }
    .stat-item + .stat-item::before { display: none; }
    .hero::before { width: 400px; height: 400px; top: -15%; right: -20%; }
    .hero::after { width: 300px; height: 300px; bottom: -10%; left: -15%; }
    .honor-card { flex: 0 0 calc(50% - 12px); width: calc(50% - 12px); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .platform-modules { grid-template-columns: repeat(2, 1fr); }
    .platform-features { grid-template-columns: repeat(2, 1fr); }
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .oneplus-section { padding: 36px 28px; }
    .overview-image-wrapper { padding: 24px; }
    .highlight-card { grid-template-columns: 1fr; padding: 44px; }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: 1fr; }
    .contact-wrapper { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .nav-list { display: none; }
    /* 遮罩层 */
    .nav.active::before {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.45);
        z-index: 999;
        animation: fadeIn .25s ease;
    }
    @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
    .nav.active .nav-list {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0; right: 0;
        width: 82%;
        max-width: 360px;
        height: 100vh;
        background: var(--color-white);
        padding: 68px 0 24px;
        gap: 0;
        z-index: 1000;
        overflow-x: hidden;
        overflow-y: auto;
        box-shadow: -8px 0 40px rgba(0,0,0,0.16);
        animation: slideIn .28s cubic-bezier(0.4,0,0.2,1);
    }
    @keyframes slideIn { from { transform: translateX(100%); } to { transform: translateX(0); } }
    .nav.active .nav-item { width: 100%; }
    .nav.active .nav-link {
        padding: 16px 24px;
        font-size: 1rem;
        font-weight: 600;
        color: var(--color-gray-900);
        width: 100%;
        justify-content: space-between;
        border-bottom: 1px solid var(--color-gray-50);
    }
    .nav.active .nav-link:active { background: var(--color-off-white); }
    .nav.active .dropdown-menu {
        position: static;
        left: auto;
        right: auto;
        top: auto;
        max-width: 100%;
        box-shadow: none;
        border: none;
        padding: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        min-width: auto;
        width: 100%;
        background: var(--color-off-white);
        border-bottom: 1px solid var(--color-gray-50);
    }
    .nav.active .dropdown-grid {
        max-width: 100%;
        overflow: hidden;
    }
    .nav.active .dropdown-col {
        max-width: 100%;
        word-break: break-word;
    }
    .nav.active .dropdown.active .dropdown-menu {
        display: block;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: none;
    }
    .nav.active .dropdown-grid {
        display: flex;
        flex-direction: column;
        gap: 0;
        padding: 8px 24px 16px;
    }
    .nav.active .dropdown-col {
        display: block;
        margin-bottom: 14px;
    }
    .nav.active .dropdown-col:last-child {
        margin-bottom: 0;
    }
    .nav.active .dropdown-col h4 {
        font-size: 0.95rem;
        margin: 0 0 6px;
        padding: 0;
        border: none;
    }
    .nav.active .dropdown-col h4 a {
        display: block;
        padding: 8px 0;
        margin: 0;
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--color-primary);
    }
    .nav.active .dropdown-col h4 a:active {
        color: var(--color-primary-dark);
    }
    .nav.active .dropdown-col > a {
        display: block;
        padding: 7px 0 7px 14px;
        font-size: 0.88rem;
        color: var(--color-gray-600);
        border-left: 2px solid var(--color-primary-lighter);
        margin: 2px 0;
    }
    .nav.active .dropdown-col > a:active {
        color: var(--color-primary);
        border-left-color: var(--color-primary);
        background: var(--color-white);
    }
    .nav.active .dropdown > .nav-link .arrow { transition: transform 0.25s ease; }
    .nav.active .dropdown.active > .nav-link .arrow { transform: rotate(180deg); }
    .mobile-toggle { display: flex; z-index: 1100; }
    .mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .mobile-toggle.active span:nth-child(2) { opacity: 0; }
    .mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
    .header-inner { gap: 8px; }
    .logo-img { height: 28px; }
    .lang-switch { padding: 2px; margin-right: 0; }
    .lang-btn { padding: 3px 7px; font-size: 0.7rem; }
    .header-actions .btn { display: none; }
    .header-actions .btn-primary {
        display: inline-flex;
        padding: 5px 9px;
        font-size: 0.72rem;
        border-radius: 16px;
    }
    .mobile-toggle { width: 36px; height: 36px; }
}
@media (max-width: 768px) {
    section { padding: 70px 0; }
    .hero { padding-top: 64px; min-height: auto; }
    .hero-inner { padding: 28px 16px 32px; gap: 28px; min-height: auto; }
    .hero-left { text-align: center; max-width: 100%; }
    .hero-right { min-width: 0; }
    .hero-title { font-size: 1.8rem; margin-bottom: 16px; }
    .hero-subtitle { font-size: 0.95rem; margin-bottom: 20px; }
    .hero-cta { flex-direction: column; justify-content: center; align-items: center; gap: 12px; }
    .hero-stats { gap: 0; display: grid; grid-template-columns: 1fr 1fr; justify-content: center; margin-top: 24px; }
    .stat-item { padding: 14px 14px; align-items: center; }
    .stat-number { font-size: 1.8rem; }
    .stat-label { font-size: 0.72rem; }
    .hero-badge { font-size: 0.78rem; padding: 5px 14px; margin-bottom: 12px; }
    .hero::before { width: 250px; height: 250px; top: -10%; right: -30%; }
    .hero::after { width: 200px; height: 200px; bottom: -8%; left: -20%; }
    .honor-card { flex: 0 0 100%; width: 100%; padding: 22px 16px; }
    .honor-card-image { height: auto; }
    .honor-card-image img { height: auto; }
    .honors-arrow { width: 36px; height: 36px; }
    .honors-arrow.prev { margin-right: -18px; }
    .honors-arrow.next { margin-left: -18px; }
    .section-title { font-size: 1.7rem; }
    .cases-grid { grid-template-columns: 1fr; gap: 18px; }
    .case-card-top { padding: 22px 20px 0; gap: 12px; }
    .case-card-body { padding: 16px 20px 22px; }
    .case-logo { width: 44px; height: 44px; }
    .case-brand { font-size: 1rem; }
    .case-card-body p { font-size: 0.85rem; }
    .products-grid { grid-template-columns: 1fr; }
    .platform-modules { grid-template-columns: 1fr; }
    .platform-features { grid-template-columns: 1fr 1fr; }
    .platform-feature-item { white-space: normal; overflow: visible; text-overflow: clip; }
    .solutions-grid { grid-template-columns: 1fr; }
    .oneplus-section { padding: 28px 20px; }
    .overview-image-wrapper { padding: 12px; border-radius: var(--radius-md); }
    .overview-image-wrapper img { border-radius: var(--radius-sm); }
    .oneplus-subtitle { font-size: 1.2rem; }
    .service-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .highlight-card { padding: 32px; }
    .highlight-content h2 { font-size: 1.8rem; }
    .logo-img { height: 32px; }
    .header.scrolled .logo-img { height: 28px; }

    .product-modal-panel { padding: 30px 22px; width: calc(100% - 24px); border-radius: var(--radius-md); }
    .product-modal-title { font-size: 1.25rem; }
    .product-modal-value { font-size: 0.9rem; }
    .platform-module .module-more { opacity: 1; transform: translateY(0); }

    /* 移动端悬浮面板 */
    .side-panel { right: 8px; gap: 6px; }
    .side-btn { width: 48px; height: 48px; gap: 3px; }
    .side-btn svg { width: 18px; height: 18px; }
    .side-btn-text { font-size: 0.55rem; }
    .back-to-top { right: 12px; bottom: 24px; width: 42px; height: 42px; }
}

/* ===== 小屏手机 (<480px) ===== */
@media (max-width: 480px) {
    .hero { padding-top: 56px; }
    .hero-inner { padding: 24px 12px 28px; gap: 20px; }
    .hero-title { font-size: 1.5rem; margin-bottom: 12px; line-height: 1.2; }
    .hero-subtitle { font-size: 0.88rem; margin-bottom: 16px; line-height: 1.5; }
    .hero-badge { font-size: 0.72rem; padding: 4px 12px; margin-bottom: 10px; }
    .hero-cta { gap: 10px; }
    .hero-cta .btn { padding: 10px 22px; font-size: 0.85rem; }
    .hero-stats { grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 20px; }
    .stat-item { padding: 10px 10px; }
    .stat-number { font-size: 1.5rem; }
    .stat-label { font-size: 0.68rem; }
    .hero::before { width: 180px; height: 180px; top: -8%; right: -40%; }
    .hero::after { width: 140px; height: 140px; bottom: -5%; left: -25%; }

    .section-title { font-size: 1.4rem; }
    .section-desc { font-size: 0.85rem; }

    .honor-card { flex: 0 0 100%; width: 100%; padding: 18px 12px; }
    .honor-card-image { height: auto; }
    .honor-card-image img { height: auto; }
    .honor-card h4 { font-size: 0.85rem; }
    .honor-card .honor-issuer { font-size: 0.72rem; }
    .honors-arrow { width: 30px; height: 30px; }
    .honors-arrow.prev { margin-right: -15px; }
    .honors-arrow.next { margin-left: -15px; }

    .case-card-top { padding: 20px 16px 0; gap: 10px; }
    .case-logo { width: 40px; height: 40px; border-radius: 10px; }
    .case-card-title { font-size: 0.92rem; }
    .case-card-desc { font-size: 0.78rem; padding: 0 16px; }

    .overview-image-wrapper { padding: 8px; border-radius: var(--radius-sm); }
    .overview-image-wrapper img { border-radius: var(--radius-sm); }
    .pgm-card { padding: 16px; }
    .pgm-card h4 { font-size: 0.85rem; }
    .pgm-card li { font-size: 0.78rem; }

    .solution-card { padding: 22px 18px; }
    .solution-card h4 { font-size: 0.95rem; }
    .solution-card > p { font-size: 0.78rem; }
    .solution-tags li { font-size: 0.7rem; padding: 3px 10px; }

    .highlight-card { padding: 24px; }
    .highlight-content h2 { font-size: 1.4rem; }
    .highlight-content p { font-size: 0.88rem; }

    .service-card { padding: 28px 18px; }
    .service-num { font-size: 2.2rem; }
    .service-card h3 { font-size: 0.95rem; }
    .service-card p { font-size: 0.8rem; }

    .pricing-card { padding: 28px 18px; }
    .pricing-card h4 { font-size: 0.9rem; }

    .news-card { padding: 20px; flex-direction: column; gap: 12px; }
    .news-card h4 { font-size: 0.9rem; }

    .footer-grid { gap: 20px; }
    .footer { padding: 50px 0 0; }
    .footer-brand p { font-size: 0.8rem; }
    .footer-col h4 { font-size: 0.82rem; margin-bottom: 16px; }
}