/* ================================================================
   NEWWAY common.css - 子页面共享样式
   深蓝+白色品牌体系 | 开屏动画 | 导航 | 页脚 | 滚动动画
   ================================================================ */

/* ===== Reset & Variables ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --deep-blue: #0a1e4a;
    --deep-blue-2: #061840;
    --royal-blue: #1e3a8a;
    --bright-blue: #3b82f6;
    --sky-blue: #60a5fa;
    --cyan: #06b6d4;
    --indigo: #6366f1;
    --white: #ffffff;
    --off-white: #f8fafc;
    --light-gray: #e2e8f0;
    --text-on-dark: #ffffff;
    --text-on-light: #0f172a;
    --text-muted-dark: rgba(255, 255, 255, 0.75);
    --text-muted-light: #475569;
    --border-dark: rgba(255, 255, 255, 0.12);
    --border-light: rgba(15, 23, 42, 0.08);
    --brand-orange: #ff6b1a;
    --brand-orange-2: #ff8c42;
    --gradient-blue: linear-gradient(135deg, #0a1e4a 0%, #1e3a8a 50%, #3b82f6 100%);
    --gradient-blue-deep: linear-gradient(135deg, #061840 0%, #0a1e4a 100%);
    --gradient-geo: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #6366f1 100%);
    --gradient-warm: linear-gradient(135deg, #ff6b1a 0%, #ff8c42 100%);
    --gradient-text: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #6366f1 100%);
    --shadow-soft: 0 4px 20px rgba(10, 30, 74, 0.08);
    --shadow-md: 0 10px 40px rgba(10, 30, 74, 0.12);
    --shadow-glow-blue: 0 0 60px rgba(59, 130, 246, 0.25);
    --shadow-glow-orange: 0 0 40px rgba(255, 107, 26, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-on-light);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--white);
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 40px; }

/* ===== Preloader (开屏动画) ===== */
.preloader {
    position: fixed; inset: 0;
    background: var(--deep-blue);
    z-index: 10000;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 20px;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}
.preloader.hidden { opacity: 0; visibility: hidden; }

.preloader-bg {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}
.preloader-glow {
    position: absolute;
    width: 400px; height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59,130,246,0.2) 0%, transparent 60%);
    animation: glowBreath 2s ease-in-out infinite;
}
@keyframes glowBreath {
    0%,100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.2); opacity: 1; }
}
.preloader-logo {
    position: relative; z-index: 2;
    height: 60px; line-height: 0;
    border-radius: 12px; overflow: hidden;
    display: inline-block;
    box-shadow: 0 0 40px rgba(59,130,246,0.4);
}
.preloader-logo img { height: 100%; width: auto; display: block; }
@keyframes logoPulse {
    0%,100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}
.preloader-name {
    position: relative; z-index: 2;
    color: var(--white); font-size: 26px; font-weight: 800;
    letter-spacing: 6px; opacity: 0;
    animation: fadeUp 0.6s 0.3s forwards;
}
.preloader-slogan {
    position: relative; z-index: 2;
    color: var(--text-muted-dark); font-size: 14px;
    letter-spacing: 3px; opacity: 0;
    animation: fadeUp 0.6s 0.6s forwards;
}
.preloader-bar {
    position: relative; z-index: 2;
    width: 180px; height: 3px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px; overflow: hidden;
    margin-top: 8px; opacity: 0;
    animation: fadeUp 0.6s 0.8s forwards;
}
.preloader-bar-fill {
    height: 100%; width: 0;
    background: var(--gradient-geo);
    border-radius: 3px;
    animation: barFill 1s 0.9s ease-out forwards;
}
@keyframes barFill { to { width: 100%; } }
@keyframes fadeUp { from { opacity:0; transform:translateY(15px); } to { opacity:1; transform:translateY(0); } }

/* ===== Navigation ===== */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: 78px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
}
.nav.scrolled { box-shadow: var(--shadow-soft); }
.nav-inner {
    max-width: 1280px; margin: 0 auto;
    padding: 0 40px; height: 100%;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo img { height: 60px; width: auto; display: block; border-radius: 0; }
.nav-logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.nav-logo-text .cn { font-size: 16px; font-weight: 700; color: var(--deep-blue); }
.nav-logo-text .en { font-size: 11px; color: var(--text-muted-light); letter-spacing: 1px; }
.nav-menu { display: flex; gap: 4px; align-items: center; }
.nav-menu a {
    padding: 8px 16px; font-size: 15px; font-weight: 500;
    color: var(--text-muted-light); border-radius: 8px;
    transition: var(--transition); position: relative;
}
.nav-menu a:hover { color: var(--deep-blue); background: rgba(10,30,74,0.04); }
.nav-menu a.active { color: var(--bright-blue); }
.nav-menu a.active::after {
    content: ''; position: absolute; bottom: 2px; left: 50%;
    transform: translateX(-50%); width: 20px; height: 2px;
    background: var(--gradient-geo); border-radius: 2px;
}
.nav-cta {
    background: var(--gradient-blue) !important;
    color: var(--white) !important;
    padding: 10px 24px !important; border-radius: 100px !important;
    font-weight: 600 !important;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(59,130,246,0.4); }
.nav-cta::after { display: none !important; }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--deep-blue); margin: 5px 0; transition: var(--transition); }

/* ===== Page Hero (子页面顶部) ===== */
.page-hero {
    min-height: 55vh;
    display: flex; align-items: center; justify-content: center;
    text-align: center; position: relative; overflow: hidden;
    background: var(--gradient-blue-deep);
    color: var(--white);
    padding: 140px 0 100px;
}
.page-hero::before {
    content: ''; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px; pointer-events: none;
}
.page-hero-glow {
    position: absolute; width: 600px; height: 600px;
    border-radius: 50%; top: -200px; right: -200px;
    background: radial-gradient(circle, rgba(59,130,246,0.25) 0%, transparent 60%);
    pointer-events: none;
}
.page-hero-glow-2 {
    position: absolute; width: 500px; height: 500px;
    border-radius: 50%; bottom: -200px; left: -100px;
    background: radial-gradient(circle, rgba(6,182,212,0.2) 0%, transparent 60%);
    pointer-events: none;
}
.page-hero-content { position: relative; z-index: 2; max-width: 800px; padding: 0 40px; }
.page-hero-tag {
    display: inline-block; padding: 6px 18px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 100px; font-size: 13px; font-weight: 600;
    letter-spacing: 2px; margin-bottom: 24px;
    backdrop-filter: blur(10px);
}
.page-hero h1 {
    font-size: clamp(36px, 5vw, 60px); font-weight: 800;
    line-height: 1.15; margin-bottom: 20px; letter-spacing: -1px;
}
.page-hero h1 .gradient {
    background: var(--gradient-geo);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.page-hero h1 .warm {
    background: var(--gradient-warm);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.page-hero p {
    font-size: clamp(15px, 1.5vw, 18px);
    color: var(--text-muted-dark); line-height: 1.8;
    max-width: 640px; margin: 0 auto;
}
.page-hero-breadcrumb {
    position: absolute; top: 100px; left: 40px; z-index: 2;
    display: flex; align-items: center; gap: 8px;
    font-size: 13px; color: var(--text-muted-dark);
}
.page-hero-breadcrumb a { color: var(--text-muted-dark); transition: var(--transition); }
.page-hero-breadcrumb a:hover { color: var(--white); }

/* ===== Section Base ===== */
section { padding: 100px 0; }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 64px; }
.section-tag {
    display: inline-block; padding: 6px 16px;
    background: rgba(59,130,246,0.1); color: var(--bright-blue);
    border-radius: 100px; font-size: 13px; font-weight: 600;
    letter-spacing: 1px; margin-bottom: 16px;
}
.section-title {
    font-size: clamp(30px, 4vw, 44px); font-weight: 800;
    line-height: 1.2; margin-bottom: 20px; letter-spacing: -0.5px;
    color: var(--text-on-light);
}
.section-title .gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.section-desc { color: var(--text-muted-light); font-size: 17px; line-height: 1.7; }

/* Dark section variant */
.section-dark { background: var(--deep-blue); color: var(--white); }
.section-dark .section-title { color: var(--white); }
.section-dark .section-desc { color: var(--text-muted-dark); }
.section-dark .section-tag { background: rgba(6,182,212,0.15); color: var(--cyan); border: 1px solid rgba(6,182,212,0.3); }
.section-dark::before {
    content: ''; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px; pointer-events: none;
}
.section-dark { position: relative; overflow: hidden; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px; border-radius: 100px;
    font-size: 15px; font-weight: 600; text-decoration: none;
    transition: var(--transition); cursor: pointer; border: none;
}
.btn-primary { background: var(--white); color: var(--deep-blue); box-shadow: 0 8px 24px rgba(255,255,255,0.2); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(255,255,255,0.3); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.3); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.6); transform: translateY(-3px); }
.btn-gradient { background: var(--gradient-geo); color: var(--white); box-shadow: 0 8px 24px rgba(6,182,212,0.4); }
.btn-gradient:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(6,182,212,0.5); }
.btn-orange { background: var(--gradient-warm); color: var(--white); box-shadow: var(--shadow-glow-orange); }
.btn-orange:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(255,107,26,0.5); }
.btn-dark { background: var(--gradient-blue); color: var(--white); box-shadow: 0 8px 24px rgba(10,30,74,0.3); }
.btn-dark:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(10,30,74,0.4); }

/* ===== Cards (通用卡片) ===== */
.card {
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: 20px; padding: 32px;
    transition: var(--transition);
    position: relative; overflow: hidden;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(59,130,246,0.2);
}
.card-dark {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 20px; padding: 32px;
    backdrop-filter: blur(10px); transition: var(--transition);
    position: relative; overflow: hidden;
}
.card-dark:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(6,182,212,0.4);
    transform: translateY(-6px);
}
.card-icon {
    width: 56px; height: 56px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 26px; margin-bottom: 20px;
    background: rgba(59,130,246,0.1);
}
.card-icon.cyan { background: rgba(6,182,212,0.1); }
.card-icon.orange { background: rgba(255,107,26,0.1); }
.card-icon.indigo { background: rgba(99,102,241,0.1); }
.card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--text-on-light); }
.card-dark h3 { color: var(--white); }
.card p { color: var(--text-muted-light); font-size: 15px; line-height: 1.7; }
.card-dark p { color: var(--text-muted-dark); }

/* ===== Grids ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }

/* ===== Image Placeholder ===== */
.img-box {
    width: 100%; border-radius: 16px; overflow: hidden;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 12px; min-height: 240px;
    background: linear-gradient(135deg, #0a1e4a 0%, #1e3a8a 100%);
    color: rgba(255,255,255,0.6); position: relative;
}
.img-box::before {
    content: ''; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 40px 40px; pointer-events: none;
}
.img-box img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
    position: absolute;
    inset: 0;
}
.img-box-icon { font-size: 48px; position: relative; z-index: 1; }
.img-box-text { font-size: 13px; letter-spacing: 1px; position: relative; z-index: 1; }
.img-box.warm { background: linear-gradient(135deg, #1e3a8a 0%, #ff6b1a 120%); }
.img-box.cyan { background: linear-gradient(135deg, #061840 0%, #06b6d4 120%); }
.img-box.purple { background: linear-gradient(135deg, #1e3a8a 0%, #6366f1 120%); }

/* ===== Stats Bar ===== */
.stats-bar {
    display: grid; grid-template-columns: repeat(4,1fr); gap: 0;
    padding: 48px 0; border-bottom: 1px solid var(--border-light);
}
.stats-bar.dark { border-bottom: none; }
.stats-item { text-align: center; padding: 16px; position: relative; }
.stats-item:not(:last-child)::after {
    content: ''; position: absolute; right: 0; top: 20%;
    height: 60%; width: 1px; background: var(--light-gray);
}
.stats-bar.dark .stats-item:not(:last-child)::after { background: rgba(255,255,255,0.1); }
.stats-num {
    font-size: clamp(36px, 4.5vw, 52px); font-weight: 900;
    line-height: 1; margin-bottom: 8px; letter-spacing: -1px;
    background: var(--gradient-text);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stats-num.warm { background: var(--gradient-warm); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stats-label { font-size: 14px; color: var(--text-muted-light); letter-spacing: 2px; font-weight: 500; }
.stats-bar.dark .stats-label { color: var(--text-muted-dark); }

/* ===== CTA Section ===== */
.cta-section {
    background: var(--gradient-blue-deep);
    color: var(--white); text-align: center;
    padding: 100px 0; position: relative; overflow: hidden;
}
.cta-section::before {
    content: ''; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px; pointer-events: none;
}
.cta-section-glow {
    position: absolute; width: 500px; height: 500px;
    border-radius: 50%; top: -150px; left: 50%;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(59,130,246,0.2) 0%, transparent 60%);
}
.cta-section-content { position: relative; z-index: 2; max-width: 680px; margin: 0 auto; padding: 0 40px; }
.cta-section h2 { font-size: clamp(28px, 3.5vw, 40px); font-weight: 800; margin-bottom: 16px; }
.cta-section p { color: var(--text-muted-dark); font-size: 17px; margin-bottom: 32px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.footer { background: var(--deep-blue-2); color: var(--text-muted-dark); padding: 64px 0 24px; }
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px; margin-bottom: 48px;
}
.footer-brand img { height: 60px; width: auto; max-width: 120px; margin-bottom: 16px; display: block; }
.footer-brand p { font-size: 14px; line-height: 1.8; }
.footer-brand .brand-name { color: var(--white); font-weight: 600; }
.footer-col h4 { color: var(--white); font-size: 15px; margin-bottom: 16px; font-weight: 600; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: var(--text-muted-dark); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--cyan); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px; text-align: center;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.4); }

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed; bottom: 32px; right: 32px;
    width: 48px; height: 48px; border-radius: 14px;
    background: var(--gradient-blue); color: var(--white);
    border: none; cursor: pointer; font-size: 20px;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden; transition: var(--transition);
    z-index: 999; box-shadow: var(--shadow-md);
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-4px); }

/* ===== Scroll Animations ===== */
.fade-up { opacity: 0; transform: translateY(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-left.visible { opacity: 1; transform: translateX(0); }
.fade-right { opacity: 0; transform: translateX(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-right.visible { opacity: 1; transform: translateX(0); }
.scale-in { opacity: 0; transform: scale(0.92); transition: opacity 0.7s ease, transform 0.7s ease; }
.scale-in.visible { opacity: 1; transform: scale(1); }

/* ===== Timeline ===== */
.timeline { position: relative; padding-left: 40px; }
.timeline::before {
    content: ''; position: absolute; left: 12px; top: 0; bottom: 0;
    width: 2px; background: linear-gradient(to bottom, var(--bright-blue), var(--cyan));
}
.timeline-item { position: relative; margin-bottom: 48px; }
.timeline-item::before {
    content: ''; position: absolute; left: -34px; top: 4px;
    width: 14px; height: 14px; border-radius: 50%;
    background: var(--white); border: 3px solid var(--bright-blue);
    box-shadow: 0 0 0 4px rgba(59,130,246,0.15);
}
.timeline-year { font-size: 24px; font-weight: 800; color: var(--bright-blue); margin-bottom: 8px; }
.timeline-content h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.timeline-content p { color: var(--text-muted-light); line-height: 1.7; }

/* ===== Process Steps ===== */
.process { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; counter-reset: step; }
.process-step {
    position: relative; padding: 32px 24px;
    background: var(--off-white); border-radius: 16px;
    counter-increment: step; transition: var(--transition);
}
.process-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.process-step::before {
    content: '0' counter(step); position: absolute; top: 16px; right: 20px;
    font-size: 36px; font-weight: 900; color: rgba(59,130,246,0.12);
}
.process-step h4 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.process-step p { font-size: 14px; color: var(--text-muted-light); line-height: 1.6; }
.process-step .step-icon { font-size: 32px; margin-bottom: 16px; }

/* ===== Tag / Badge ===== */
.tag {
    display: inline-block; padding: 4px 12px;
    border-radius: 6px; font-size: 12px; font-weight: 600;
    letter-spacing: 1px;
}
.tag-blue { background: rgba(59,130,246,0.1); color: var(--bright-blue); }
.tag-cyan { background: rgba(6,182,212,0.1); color: var(--cyan); }
.tag-orange { background: rgba(255,107,26,0.1); color: var(--brand-orange); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2,1fr); }
    .grid-3 { grid-template-columns: repeat(2,1fr); }
    .grid-2 { grid-template-columns: 1fr; }
    .process { grid-template-columns: repeat(2,1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    section { padding: 64px 0; }
    .container { padding: 0 24px; }
    .nav-inner { padding: 0 24px; }
    .nav-menu { display: none; }
    .menu-toggle { display: block; }
    .nav-menu.open {
        display: flex; position: absolute;
        top: 78px; left: 0; right: 0;
        flex-direction: column; background: var(--white);
        padding: 24px; box-shadow: var(--shadow-md); gap: 4px;
    }
    .page-hero { min-height: 50vh; padding: 120px 0 80px; }
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .process { grid-template-columns: 1fr; }
    .stats-bar { grid-template-columns: 1fr 1fr; }
    .stats-item:not(:last-child)::after { display: none; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .cta-buttons { flex-direction: column; align-items: center; }
    .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
}
@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .stats-bar { grid-template-columns: 1fr; }
}