/* ============================================================
   泰安科源教学设备 — 旗舰级企业官网样式 v2.0
   设计系统：泰山意象 · 有机形态 · 沉浸光影 · 灵动韵律
   ============================================================ */

/* ========== CSS Variables ========== */
:root {
    --c-primary: #0A2540;
    --c-primary-light: #1A3A5C;
    --c-primary-dark: #061A2E;
    --c-accent: #C6943E;
    --c-accent-light: #D4A853;
    --c-accent-dark: #A87A2E;
    --c-teal: #00B4D8;
    --c-teal-light: #48CAE4;
    --c-teal-dark: #0096B7;
    --c-text: #1E293B;
    --c-text-light: #64748B;
    --c-text-lighter: #94A3B8;
    --c-bg: #FFFFFF;
    --c-bg-warm: #FAF8F5;
    --c-bg-cool: #F0F4F8;
    --c-bg-dark: #0A1628;
    --c-border: #E2E8F0;
    --c-border-light: #F1F5F9;
    --shadow-sm: 0 1px 3px rgba(10,37,64,0.06), 0 1px 2px rgba(10,37,64,0.04);
    --shadow-md: 0 4px 20px -4px rgba(10,37,64,0.1);
    --shadow-lg: 0 10px 40px -10px rgba(10,37,64,0.15);
    --shadow-xl: 0 20px 60px -15px rgba(10,37,64,0.2);
    --shadow-glow: 0 0 30px rgba(198,148,62,0.15);
    --shadow-glow-lg: 0 0 60px rgba(198,148,62,0.2), 0 0 120px rgba(198,148,62,0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-body: -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', 'PingFang SC', 'Source Han Sans CN', 'Segoe UI', sans-serif;
    --font-heading: 'Microsoft YaHei', 'PingFang SC', 'Source Han Sans CN', sans-serif;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    /* Taishan Mountain SVG (reusable) */
    --mountain-svg: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%230A2540' fill-opacity='0.06' d='M0,224L48,218.7C96,213,192,203,288,170.7C384,139,480,85,576,90.7C672,96,768,160,864,186.7C960,213,1056,203,1152,176C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'/%3E%3C/svg%3E");
    --cloud-svg: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 100'%3E%3Cellipse cx='100' cy='60' rx='90' ry='35' fill='white' fill-opacity='0.04'/%3E%3Cellipse cx='70' cy='50' rx='60' ry='28' fill='white' fill-opacity='0.03'/%3E%3Cellipse cx='140' cy='55' rx='55' ry='25' fill='white' fill-opacity='0.025'/%3E%3C/svg%3E");
}

/* ========== CSS Reset & Base ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
    font-family: var(--font-body);
    font-size: 1.0625rem;
    color: var(--c-text);
    background: var(--c-bg);
    overflow-x: hidden;
    line-height: 1.7;
}
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); line-height: 1.3; }
a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

::selection { background-color: var(--c-accent); color: #FFFFFF; }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--c-bg-cool); }
::-webkit-scrollbar-thumb { background: var(--c-accent); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-accent-dark); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ========== Utility Classes ========== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
@media (min-width: 640px)  { .container { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .container { padding: 0 2rem; } }

.text-gradient {
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light), #E8C374);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.text-gradient-teal {
    background: linear-gradient(135deg, var(--c-teal), var(--c-teal-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    border-radius: 9999px; padding: 0.875rem 1.75rem;
    font-family: var(--font-body); font-size: 0.875rem; font-weight: 600;
    cursor: pointer; transition: all var(--transition-base); border: none;
    position: relative; overflow: hidden;
}
.btn::before {
    content: ''; position: absolute; inset: 0; border-radius: 9999px;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent 60%);
    opacity: 0; transition: opacity var(--transition-base);
}
.btn:hover::before { opacity: 1; }
.btn:active { transform: scale(0.98); }
.btn-primary {
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light));
    color: #FFFFFF;
    box-shadow: 0 4px 15px -3px rgba(198,148,62,0.4);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--c-accent-light), var(--c-accent));
    box-shadow: 0 10px 30px -5px rgba(198,148,62,0.5), var(--shadow-glow);
    transform: translateY(-3px);
}
.btn-outline-white { border: 2px solid rgba(255,255,255,0.4); color: #FFFFFF; background: rgba(255,255,255,0.05); backdrop-filter: blur(4px); }
.btn-outline-white:hover { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.8); transform: translateY(-3px); }
.btn-outline-brand { border: 2px solid var(--c-accent); color: var(--c-accent); background: transparent; }
.btn-outline-brand:hover { background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light)); color: #FFFFFF; }
.btn-lg { padding: 1rem 2rem; font-size: 1rem; }

/* Accent Line */
.accent-line {
    width: 80px; height: 4px; border-radius: 9999px; margin: 0.75rem auto;
    background: linear-gradient(90deg, var(--c-accent), var(--c-accent-light), transparent);
    position: relative;
}
.accent-line::after {
    content: ''; position: absolute; top: 50%; right: -12px; transform: translateY(-50%);
    width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent);
    animation: pulseGlow 2s infinite;
}

/* MORE Button */
.more-link {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-size: 0.875rem; font-weight: 600; color: var(--c-accent);
    transition: all var(--transition-base); cursor: pointer;
    position: relative; padding-bottom: 4px;
}
.more-link::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px;
    background: linear-gradient(90deg, var(--c-accent), transparent);
    transform: scaleX(0); transform-origin: left; transition: transform var(--transition-base);
}
.more-link:hover::after { transform: scaleX(1); }
.more-link:hover { gap: 0.75rem; }
.more-link svg { width: 16px; height: 16px; transition: transform var(--transition-base); }
.more-link:hover svg { transform: translateX(4px); }

/* ========== NAVBAR ========== */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(10,37,64,0.45); padding: 0.75rem 0; transition: all var(--transition-slow); box-shadow: none; backdrop-filter: blur(6px); }
.navbar.scrolled { background: rgba(255,255,255,0.95); padding: 0.5rem 0; box-shadow: var(--shadow-lg); backdrop-filter: blur(20px) saturate(1.8); }
.navbar::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--c-accent), var(--c-accent-light), var(--c-accent), transparent);
    background-size: 200% 100%; animation: progressFlow 4s linear infinite; opacity: 0; transition: opacity var(--transition-slow);
}
.navbar.scrolled::after { opacity: 1; }
.navbar-inner { display: flex; align-items: center; justify-content: space-between; }

/* Logo */
.nav-logo { display: flex; align-items: center; gap: 0.75rem; }
.nav-logo-icon {
    width: 3.5rem; height: 3.5rem; border-radius: 0.75rem;
    overflow: hidden; transition: all var(--transition-base);
    background: rgba(255,255,255,0.92);
    padding: 3px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.25);
}
.nav-logo:hover .nav-logo-icon { transform: scale(1.08); box-shadow: var(--shadow-glow); }
.nav-logo-icon img { width: 100%; height: 100%; object-fit: cover; }
.nav-logo-text h2 { font-size: 1.1rem; font-weight: 700; color: #FFFFFF; line-height: 1.2; transition: color var(--transition-base); }
.navbar.scrolled .nav-logo-text h2 { color: var(--c-primary); }
.nav-logo:hover .nav-logo-text h2 { color: var(--c-accent); }
.nav-logo-text span { font-size: 0.7rem; color: rgba(255,255,255,0.7); transition: color var(--transition-base); }
.navbar.scrolled .nav-logo-text span { color: var(--c-text-light); }

/* Nav Links */
.nav-links { display: none; align-items: center; gap: 0.125rem; }
@media (min-width: 1200px) { .nav-links { display: flex; } }

.nav-item { position: relative; }
.nav-item > a {
    display: flex; align-items: center; gap: 0.25rem;
    padding: 1.25rem 1.125rem; font-size: 0.95rem; font-weight: 500;
    color: rgba(255,255,255,0.85); transition: color var(--transition-base); cursor: pointer;
}
.navbar.scrolled .nav-item > a { color: #334155; }
.nav-item > a:hover, .nav-item.active > a { color: var(--c-accent); }
.nav-item > a::after {
    content: ''; position: absolute; bottom: 0.75rem; left: 50%; transform: translateX(-50%);
    width: 0; height: 2px; border-radius: 9999px;
    background: var(--c-accent); transition: width var(--transition-base);
}
.nav-item:hover > a::after, .nav-item.active > a::after { width: 2rem; }
.nav-item.active > a::before {
    content: ''; position: absolute; bottom: 0.25rem; left: 50%; transform: translateX(-50%) rotate(45deg);
    width: 6px; height: 6px; background: var(--c-accent);
}

/* Dropdown */
.nav-dropdown { position: absolute; top: 100%; left: 50%; transform: translateX(-50%); padding-top: 0.5rem; opacity: 0; visibility: hidden; transition: all var(--transition-base); }
.nav-item:hover .nav-dropdown { opacity: 1; visibility: visible; }
.dropdown-inner {
    min-width: 200px; border-radius: var(--radius-md);
    background: rgba(255,255,255,0.92); backdrop-filter: blur(20px) saturate(1.5);
    box-shadow: var(--shadow-xl); border: 1px solid rgba(255,255,255,0.6);
    overflow: hidden; animation: dropdownSlide 0.3s ease-out;
}
.dropdown-top-bar { height: 3px; background: linear-gradient(90deg, var(--c-accent), var(--c-accent-light)); }
.dropdown-inner a { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem 1.25rem; font-size: 0.875rem; color: #475569; transition: all var(--transition-fast); cursor: pointer; }
.dropdown-inner a:hover { color: var(--c-accent); background: rgba(198,148,62,0.06); }
.dropdown-dot { width: 6px; height: 6px; border-radius: 50%; background: #E2D5C0; transition: all var(--transition-fast); }
.dropdown-inner a:hover .dropdown-dot { background: var(--c-accent); transform: scale(1.5); }

/* Nav Right Phone */
.nav-right { display: none; align-items: center; gap: 1rem; }
@media (min-width: 1024px) { .nav-right { display: flex; } }
.nav-phone { display: flex; align-items: center; gap: 0.5rem; color: var(--c-accent); cursor: pointer; }
.nav-phone-icon {
    width: 2.5rem; height: 2.5rem; border-radius: 50%;
    background: rgba(198,148,62,0.1); display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-base);
}
.nav-phone:hover .nav-phone-icon { background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light)); }
.nav-phone-icon svg { width: 18px; height: 18px; color: var(--c-accent); transition: color var(--transition-base); }
.nav-phone:hover .nav-phone-icon svg { color: #fff; }
.nav-phone-label { font-size: 0.7rem; color: var(--c-text-light); transition: color var(--transition-base); }
.navbar:not(.scrolled) .nav-phone-label { color: rgba(255,255,255,0.6); }
.nav-phone-number { font-size: 0.95rem; font-weight: 700; color: var(--c-accent); letter-spacing: 0.5px; }

/* Hamburger */
.hamburger {
    display: flex; align-items: center; justify-content: center;
    width: 2.5rem; height: 2.5rem; background: none; border: none; cursor: pointer;
    color: #FFFFFF; transition: color var(--transition-base);
}
.navbar.scrolled .hamburger { color: var(--c-primary); }
.hamburger svg { width: 24px; height: 24px; }
@media (min-width: 1200px) { .hamburger { display: none; } }

/* ========== Mobile Menu ========== */
.mobile-menu { position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 2000; pointer-events: none; opacity: 0; transition: opacity var(--transition-base); }
.mobile-menu.open { pointer-events: auto; opacity: 1; }
.mobile-overlay { position: absolute; inset: 0; background: rgba(10,37,64,0.6); backdrop-filter: blur(4px); }
.mobile-panel {
    position: absolute; top: 0; right: 0; bottom: 0; width: 320px; max-width: 85vw;
    background: #FFFFFF; box-shadow: var(--shadow-xl); transform: translateX(100%);
    transition: transform var(--transition-base); overflow-y: auto;
}
.mobile-menu.open .mobile-panel { transform: translateX(0); }
.mobile-panel-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.25rem; border-bottom: 1px solid var(--c-border); }
.mobile-panel-header h3 { font-size: 1rem; font-weight: 700; color: var(--c-primary); }
.mobile-close { background: none; border: none; cursor: pointer; color: var(--c-text-light); padding: 0.25rem; }
.mobile-close svg { width: 22px; height: 22px; }
.mobile-panel-nav { padding: 0.5rem 0; }
.mobile-nav-item { border-bottom: 1px solid var(--c-border-light); }
.mobile-nav-link {
    display: flex; align-items: center; justify-content: space-between; width: 100%;
    padding: 0.875rem 1.25rem; font-size: 0.95rem; font-weight: 500;
    color: var(--c-text); background: none; border: none; cursor: pointer; text-align: left;
    transition: color var(--transition-fast);
}
.mobile-nav-link:hover { color: var(--c-accent); }
.mobile-nav-link svg { width: 18px; height: 18px; transition: transform var(--transition-base); }
.mobile-nav-link.open svg { transform: rotate(180deg); }
.mobile-subnav { display: none; padding: 0 0 0.5rem 1.5rem; }
.mobile-subnav.open { display: block; }
.mobile-subnav a { display: block; padding: 0.5rem 1.25rem; font-size: 0.875rem; color: var(--c-text-light); transition: color var(--transition-fast); }
.mobile-subnav a:hover { color: var(--c-accent); }
.mobile-phone-box {
    display: flex; align-items: center; gap: 0.75rem;
    margin: 1rem 1.25rem; padding: 1rem; border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(198,148,62,0.08), rgba(198,148,62,0.04));
    border: 1px solid rgba(198,148,62,0.15);
}
.mobile-phone-box svg { width: 24px; height: 24px; color: var(--c-accent); flex-shrink: 0; }
.mobile-phone-box .label { font-size: 0.7rem; color: var(--c-text-light); }
.mobile-phone-box .number { font-size: 1rem; font-weight: 700; color: var(--c-accent); }

/* ========== HERO SLIDER ========== */
.hero { position: relative; height: 100vh; height: var(--vh, 100vh); height: 100dvh; min-height: 600px; overflow: hidden; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.2s ease-in-out; }
.hero-slide.active { opacity: 1; }
.hero-slide img {
    width: 100% !important; height: 100% !important; object-fit: cover;
    animation: heroZoom 20s ease-in-out infinite alternate;
    max-width: none !important;
}
.hero-slide.active img { animation: heroZoom 20s ease-in-out infinite alternate; }
@keyframes heroZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.08); }
}
.hero-overlay {
    position: absolute; inset: 0;
    background: transparent;
}
/* Decorative floating cloud in hero */
.hero::before {
    content: ''; position: absolute; top: 15%; right: 5%; width: 400px; height: 200px; z-index: 3;
    background: radial-gradient(ellipse, rgba(255,255,255,0.06) 0%, transparent 70%);
    border-radius: 50%; animation: floatCloud 12s ease-in-out infinite;
    pointer-events: none;
}
@keyframes floatCloud {
    0%, 100% { transform: translateX(0) translateY(0); opacity: 0.6; }
    50% { transform: translateX(-30px) translateY(-10px); opacity: 1; }
}
.hero-content { position: absolute; inset: 0; display: flex; align-items: center; z-index: 4; }
.hero-inner {
    max-width: 650px;
    background: rgba(10,37,64,0.42);
    padding: 2rem 2.5rem;
    border-radius: 1.25rem;
    backdrop-filter: blur(4px);
}
.hero-tag {
    display: inline-flex; align-items: center; gap: 0.5rem;
    border-radius: 9999px; border: 1px solid rgba(198,148,62,0.3);
    background: rgba(198,148,62,0.1); backdrop-filter: blur(4px);
    padding: 0.375rem 1.25rem; font-size: 0.75rem; font-weight: 600;
    color: var(--c-accent-light); margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}
.hero-tag-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); animation: pulseGlow 3s ease-in-out infinite; }
.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; color: #FFFFFF;
    line-height: 1.2; margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease-out 0.4s both;
    text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
.hero-title .text-gold {
    color: #FFFFFF;
    text-shadow: 0 2px 16px rgba(10,37,64,0.5);
    border-bottom: 3px solid var(--c-accent);
    padding-bottom: 2px;
    display: inline-block;
}
.hero-desc {
    font-size: clamp(0.95rem, 2vw, 1.125rem); color: rgba(255,255,255,0.85);
    line-height: 1.7; margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
    text-shadow: 0 1px 8px rgba(0,0,0,0.3);
}
.hero-btns {
    display: flex; flex-wrap: wrap; gap: 1rem;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

/* Hero Arrows */
.hero-arrow {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 3rem; height: 3rem; border-radius: 50%;
    background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(8px); color: #FFFFFF; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-base); z-index: 10;
}
.hero-arrow:hover { background: rgba(198,148,62,0.3); border-color: var(--c-accent); box-shadow: var(--shadow-glow); }
.hero-prev { left: 1.5rem; }
.hero-next { right: 1.5rem; }
@media (max-width: 768px) { .hero-arrow { display: none; } }

/* Hero Dots - repositioned to bottom right */
.hero-dots {
    position: absolute; bottom: 2.5rem; right: 2.5rem;
    display: flex; gap: 0.5rem; z-index: 10;
}
.hero-dot {
    width: 10px; height: 10px; border-radius: 50%;
    background: rgba(255,255,255,0.35); border: 2px solid rgba(255,255,255,0.5);
    cursor: pointer; transition: all var(--transition-base);
}
.hero-dot.active { background: var(--c-accent); border-color: var(--c-accent); transform: scale(1.3); box-shadow: 0 0 12px rgba(198,148,62,0.5); }

/* Hero Scroll Button - immersive scroll-down CTA */
.hero-scroll {
    position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%);
    display: flex; flex-direction: column; align-items: center; gap: 0.625rem;
    z-index: 10; cursor: pointer;
}
.hero-scroll-text {
    font-size: 0.7rem; font-weight: 600; letter-spacing: 3px; color: rgba(255,255,255,0.7);
    text-transform: uppercase;
}
.hero-scroll-btn {
    width: 48px; height: 48px; border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.08); backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-base);
    animation: scrollBounce 2.5s ease-in-out infinite;
}
.hero-scroll-btn:hover {
    border-color: var(--c-accent); background: rgba(198,148,62,0.2);
}
.hero-scroll-btn svg { width: 20px; height: 20px; color: rgba(255,255,255,0.8); }
@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ========== SECTION COMMON ========== */
.section { padding: 3rem 0; position: relative; }

/* ========== 泰山主题背景系统 ========== */
/* 浅色section：白底+泰山山脉淡影 */
.section-light {
    background: var(--c-bg-warm);
    background-image:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 120'%3E%3Cpath d='M0,120 L0,85 Q80,70 160,80 Q240,60 320,72 Q400,45 480,62 Q540,38 580,55 Q620,28 660,20 Q700,12 720,8 Q740,4 760,10 Q780,18 820,32 Q880,22 940,42 Q1000,32 1060,55 Q1120,42 1200,68 Q1320,80 1440,90 L1440,120 Z' fill='rgba(10,37,64,0.035)'/%3E%3Cpath d='M0,120 L0,100 Q200,88 400,95 Q600,82 720,88 Q840,82 1040,92 Q1240,100 1440,108 L1440,120 Z' fill='rgba(10,37,64,0.02)'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: bottom center;
    background-size: 100% auto;
}

/* 深蓝section：泰山剪影+金色光晕 */
.section-cool {
    background: var(--c-bg-cool);
    background-image:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 160'%3E%3Cdefs%3E%3ClinearGradient id='mg' x1='0' y1='0' x2='0' y2='1'%3E%3Cstop offset='0' stop-color='%23C6943E' stop-opacity='0.06'/%3E%3Cstop offset='1' stop-color='%23C6943E' stop-opacity='0'/%3E%3C/linearGradient%3E%3C/defs%3E%3Cpath d='M0,160 L0,110 Q80,95 160,105 Q260,78 340,92 Q420,60 500,76 Q560,48 600,62 Q640,32 680,22 Q720,10 740,6 Q760,2 780,8 Q800,16 840,28 Q900,15 960,36 Q1020,22 1080,48 Q1140,35 1220,62 Q1320,78 1440,95 L1440,160 Z' fill='url(%23mg)'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: bottom center;
    background-size: 100% auto;
}

/* 深色section：泰山全貌+星空点缀 */
.section-dark {
    background: var(--c-primary);
    color: #FFFFFF;
    background-image:
        radial-gradient(1px 1px at 15% 25%, rgba(255,255,255,0.35) 0%, transparent 100%),
        radial-gradient(1px 1px at 45% 15%, rgba(255,255,255,0.25) 0%, transparent 100%),
        radial-gradient(1px 1px at 75% 30%, rgba(255,255,255,0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 85% 10%, rgba(198,148,62,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 30% 8%, rgba(255,255,255,0.2) 0%, transparent 100%),
        radial-gradient(1px 1px at 60% 5%, rgba(255,255,255,0.3) 0%, transparent 100%),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 200'%3E%3Cpath d='M0,200 L0,130 Q80,112 160,124 Q260,98 360,115 Q440,82 520,100 Q580,68 620,82 Q660,52 700,40 Q720,30 740,22 Q760,14 780,20 Q800,28 840,38 Q900,20 980,42 Q1060,25 1140,55 Q1220,40 1320,72 Q1380,88 1440,100 L1440,200 Z' fill='rgba(198,148,62,0.07)'/%3E%3Cpath d='M0,200 L0,160 Q240,145 480,158 Q720,142 960,155 Q1200,140 1440,155 L1440,200 Z' fill='rgba(255,255,255,0.02)'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat;
    background-position: center, center, center, center, center, center, bottom center;
    background-size: auto, auto, auto, auto, auto, auto, 100% auto;
}

/* 泰山水墨背景图 - 附着在section上 */
.section-taishan {
    overflow: hidden;
}
/* 亮色section：右侧淡墨山影 */
.section-taishan:not(.section-dark)::after {
    content: '';
    position: absolute; top: 0; right: 0; bottom: 0;
    width: 45%; min-width: 320px;
    pointer-events: none; z-index: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 500 600'%3E%3Cdefs%3E%3Cfilter id='blur'%3E%3CfeGaussianBlur stdDeviation='8'/%3E%3C/filter%3E%3CradialGradient id='fade' cx='50%25' cy='50%25' r='50%25'%3E%3Cstop offset='0%25' stop-color='%230A2540' stop-opacity='0.07'/%3E%3Cstop offset='100%25' stop-color='%230A2540' stop-opacity='0'/%3E%3C/radialGradient%3E%3C/defs%3E%3Cg filter='url(%23blur)'%3E%3Cpath d='M80,600 L80,380 Q120,340 160,360 Q200,310 240,330 Q270,280 300,260 Q320,230 340,210 Q360,180 380,160 Q400,140 420,155 Q440,170 460,190 Q480,220 500,240 L500,600 Z' fill='%230A2540' opacity='0.09'/%3E%3Cpath d='M0,600 L0,450 Q60,420 120,435 Q180,400 240,415 Q300,380 340,395 Q370,360 400,340 Q430,310 460,295 Q480,285 500,290 L500,600 Z' fill='%230A2540' opacity='0.05'/%3E%3Cpath d='M200,600 L200,480 Q260,455 320,468 Q380,440 440,458 Q470,448 500,455 L500,600 Z' fill='%230A2540' opacity='0.04'/%3E%3C/g%3E%3Crect width='500' height='600' fill='url(%23fade)'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center right;
    opacity: 1;
    /* 左侧渐隐，融入背景 */
    -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.5) 30%, black 100%);
    mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.5) 30%, black 100%);
}
/* 深色section：右侧金色山影 */
.section-dark.section-taishan::after {
    content: '';
    position: absolute; top: 0; right: 0; bottom: 0;
    width: 45%; min-width: 320px;
    pointer-events: none; z-index: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 500 600'%3E%3Cdefs%3E%3Cfilter id='blur2'%3E%3CfeGaussianBlur stdDeviation='10'/%3E%3C/filter%3E%3C/defs%3E%3Cg filter='url(%23blur2)'%3E%3Cpath d='M80,600 L80,380 Q120,340 160,360 Q200,310 240,330 Q270,280 300,260 Q320,230 340,210 Q360,180 380,160 Q400,140 420,155 Q440,170 460,190 Q480,220 500,240 L500,600 Z' fill='%23C6943E' opacity='0.12'/%3E%3Cpath d='M0,600 L0,450 Q60,420 120,435 Q180,400 240,415 Q300,380 340,395 Q370,360 400,340 Q430,310 460,295 Q480,285 500,290 L500,600 Z' fill='%23C6943E' opacity='0.07'/%3E%3C/g%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center right;
    -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.6) 25%, black 100%);
    mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.6) 25%, black 100%);
}

.section-glow { position: relative; overflow: hidden; }

/* Section wave divider between sections */
.section-wave-divider {
    position: absolute; bottom: -2px; left: 0; right: 0; z-index: 5; line-height: 0;
    pointer-events: none;
}
.section-wave-divider svg { width: 100%; height: 50px; }
.section-wave-divider-flip { top: -2px; bottom: auto; transform: rotate(180deg); }

/* Section Header */
.section-header { text-align: center; margin-bottom: 2.5rem; position: relative; }
.section-header-row { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 2rem; }
.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800; color: var(--c-primary);
    position: relative; display: inline-block;
}
.section-dark .section-title { color: #FFFFFF; }
.section-subtitle { font-size: 1rem; color: var(--c-text-light); margin-top: 0.5rem; }
.section-dark .section-subtitle { color: rgba(255,255,255,0.6); }

/* Decorative dots pattern (for section backgrounds) */
.section-dots-pattern {
    position: relative;
}
.section-dots-pattern::after {
    content: ''; position: absolute; top: 10%; right: 3%; width: 120px; height: 120px;
    background-image: radial-gradient(circle, rgba(198,148,62,0.12) 1px, transparent 1px);
    background-size: 12px 12px; border-radius: 50%;
    pointer-events: none; opacity: 0.5;
}

/* ========== STATS SECTION ========== */
.stats-section {
    padding: 2.5rem 0; position: relative;
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-light) 50%, #1E4568 100%);
    margin-top: 0; z-index: 10;
}
/* Mountain silhouette decoration in stats */
.stats-section::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 400' preserveAspectRatio='none'%3E%3Cpath fill='rgba(255,255,255,0.02)' d='M0,400 L0,300 Q200,200 400,260 Q600,160 800,220 Q1000,140 1200,200 L1440,150 L1440,400 Z'/%3E%3Cpath fill='rgba(198,148,62,0.03)' d='M0,400 L0,340 Q300,250 600,300 Q900,200 1200,260 L1440,220 L1440,400 Z'/%3E%3C/svg%3E");
    background-size: 100% 100%; pointer-events: none;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; position: relative; z-index: 2; }
@media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; } }

.stat-card {
    text-align: center; padding: 2rem 1.5rem;
    background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg); transition: all var(--transition-base);
    position: relative; overflow: hidden; backdrop-filter: blur(4px);
}
.stat-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--c-accent), var(--c-accent-light));
    opacity: 0; transition: opacity var(--transition-base);
}
.stat-card::after {
    content: ''; position: absolute; bottom: -40px; right: -40px; width: 100px; height: 100px;
    border-radius: 50%; background: radial-gradient(circle, rgba(198,148,62,0.08), transparent 70%);
    pointer-events: none; opacity: 0; transition: opacity var(--transition-base);
}
.stat-card:hover { background: rgba(255,255,255,0.1); transform: translateY(-6px); }
.stat-card:hover::before { opacity: 1; }
.stat-card:hover::after { opacity: 1; }
.stat-icon { margin-bottom: 1rem; }
.stat-icon svg { width: 36px; height: 36px; color: var(--c-accent-light); margin: 0 auto; }
.stat-number { font-size: 2.25rem; font-weight: 800; color: #FFFFFF; margin-bottom: 0.25rem; }
.stat-label { font-size: 0.875rem; color: rgba(255,255,255,0.6); }

/* Diamond decorations */
.stats-diamond {
    position: absolute; width: 40px; height: 40px; transform: rotate(45deg);
    border: 1px solid rgba(198,148,62,0.2); pointer-events: none;
    animation: floatDiamond 6s ease-in-out infinite;
}
.stats-diamond-1 { top: -20px; right: 10%; animation-delay: 0s; }
.stats-diamond-2 { bottom: -20px; left: 15%; animation-delay: 3s; }
@keyframes floatDiamond {
    0%, 100% { transform: rotate(45deg) translateY(0); }
    50% { transform: rotate(45deg) translateY(-8px); }
}

/* ========== ABOUT SECTION ========== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
@media (max-width: 968px) { .about-grid { grid-template-columns: 1fr; gap: 2.5rem; } }

.about-image-wrapper {
    position: relative; border-radius: var(--radius-lg); overflow: visible;
}
/* Organic shape frame instead of rectangle */
.about-image-wrapper::before {
    content: ''; position: absolute; top: -15px; left: -15px; right: 15px; bottom: 15px;
    border: 2px solid rgba(198,148,62,0.2); border-radius: var(--radius-lg) var(--radius-xl) var(--radius-lg) var(--radius-xl);
    pointer-events: none; z-index: -1;
}
.about-image-wrapper::after {
    content: ''; position: absolute; top: 15px; left: 15px; right: -15px; bottom: -15px;
    border: 2px solid rgba(198,148,62,0.15); border-radius: var(--radius-xl) var(--radius-lg) var(--radius-xl) var(--radius-lg);
    pointer-events: none; z-index: -1;
}
.about-image-main {
    width: 100%; aspect-ratio: 4/3; object-fit: cover;
    border-radius: var(--radius-lg);
    transition: transform 0.6s ease;
}
.about-image-wrapper:hover .about-image-main { transform: scale(1.02); }
.about-image-badge {
    position: absolute; top: -10px; right: -10px; width: 100px; height: 100px;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light));
    border-radius: var(--radius-md); display: flex; flex-direction: column;
    align-items: center; justify-content: center; color: #FFFFFF;
    box-shadow: var(--shadow-lg), var(--shadow-glow); z-index: 2;
    transform: rotate(5deg);
    transition: transform var(--transition-base);
}
.about-image-wrapper:hover .about-image-badge { transform: rotate(0deg) scale(1.05); }
.about-image-badge .year { font-size: 1.5rem; font-weight: 800; line-height: 1; }
.about-image-badge .label { font-size: 0.7rem; margin-top: 0.25rem; opacity: 0.9; }

.about-content h3 { font-size: 1.5rem; font-weight: 700; color: var(--c-primary); margin-bottom: 1rem; }
.about-desc { color: var(--c-text-light); line-height: 1.8; margin-bottom: 2rem; }
.about-desc p { margin-bottom: 0.75rem; }

/* Values Grid */
.values-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.value-card {
    padding: 1.25rem; border-radius: var(--radius-md);
    background: var(--c-bg-warm); border: 1px solid var(--c-border-light);
    transition: all var(--transition-base); position: relative; overflow: hidden;
}
.value-card::after {
    content: ''; position: absolute; top: 0; right: 0; width: 40px; height: 40px;
    background: linear-gradient(135deg, transparent 50%, rgba(198,148,62,0.06) 50%);
    border-radius: 0 var(--radius-md) 0 0; transition: all var(--transition-base);
}
.value-card:hover { border-color: var(--c-accent); box-shadow: var(--shadow-sm); transform: translateY(-3px) rotate(-0.5deg); }
.value-card:hover::after { width: 60px; height: 60px; }
.value-card-icon {
    width: 2.5rem; height: 2.5rem; border-radius: 10px;
    background: linear-gradient(135deg, rgba(198,148,62,0.1), rgba(198,148,62,0.05));
    display: flex; align-items: center; justify-content: center; margin-bottom: 0.75rem;
}
.value-card-icon svg { width: 20px; height: 20px; color: var(--c-accent); }
.value-card h4 { font-size: 0.95rem; font-weight: 700; color: var(--c-primary); margin-bottom: 0.25rem; }
.value-card p { font-size: 0.8rem; color: var(--c-text-light); }

/* ========== PRODUCTS SECTION ========== */
.products-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2.5rem; justify-content: center; }
.product-tab {
    padding: 0.625rem 1.5rem; border-radius: 9999px; font-size: 0.875rem; font-weight: 500;
    color: var(--c-text-light); background: var(--c-bg-cool); border: 1px solid var(--c-border);
    cursor: pointer; transition: all var(--transition-base);
}
.product-tab:hover { border-color: var(--c-accent); color: var(--c-accent); }
.product-tab.active {
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light));
    color: #FFFFFF; border-color: transparent; box-shadow: 0 4px 12px rgba(198,148,62,0.25);
}

.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
@media (max-width: 1024px) { .products-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .products-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .products-grid { grid-template-columns: 1fr; } }

.product-card {
    border-radius: var(--radius-lg); overflow: hidden;
    background: #FFFFFF; border: 1px solid var(--c-border-light);
    transition: all var(--transition-base); position: relative;
}
/* Staggered card offsets for organic feel */
.product-card:nth-child(2n) { transform: translateY(12px); }
.product-card:nth-child(3n) { transform: translateY(6px); }
.product-card:hover { transform: translateY(-8px) scale(1.02); box-shadow: var(--shadow-lg), 0 0 30px rgba(198,148,62,0.08); border-color: var(--c-accent); z-index: 2; }
.product-card:nth-child(2n):hover { transform: translateY(4px) scale(1.02); }
.product-card-img { aspect-ratio: 4/3; overflow: hidden; position: relative; }
.product-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.product-card:hover .product-card-img img { transform: scale(1.08); }
.product-card-img::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 60%;
    background: linear-gradient(to top, rgba(10,37,64,0.5), transparent);
    opacity: 0; transition: opacity var(--transition-base); pointer-events: none;
}
.product-card:hover .product-card-img::after { opacity: 1; }
.product-card-overlay {
    position: absolute; inset: 0;
    display: flex; align-items: flex-end; justify-content: center; padding: 1.5rem;
    z-index: 2; opacity: 0; transition: opacity var(--transition-base);
}
.product-card:hover .product-card-overlay { opacity: 1; }
.product-card-overlay .btn { font-size: 0.8rem; padding: 0.5rem 1.25rem; }
.product-card-tag {
    position: absolute; top: 12px; left: 12px;
    padding: 0.25rem 0.75rem; border-radius: 9999px;
    font-size: 0.7rem; font-weight: 600; color: #FFFFFF;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light));
    z-index: 2;
}
.product-card-info { padding: 1.25rem; position: relative; }
.product-card-info::before {
    content: ''; position: absolute; top: 0; left: 1.25rem; right: 1.25rem; height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-border), transparent);
}
.product-card-info h4 { font-size: 0.95rem; font-weight: 600; color: var(--c-primary); margin-bottom: 0.25rem; }
.product-card-info p { font-size: 0.8rem; color: var(--c-text-light); }

/* ========== CASES / GALLERY ========== */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 768px) { .cases-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .cases-grid { grid-template-columns: 1fr; } }

.case-card {
    display: block; text-decoration: none; color: inherit;
    border-radius: var(--radius-lg); overflow: hidden;
    background: #FFFFFF; border: 1px solid var(--c-border-light);
    transition: all var(--transition-base); position: relative;
}
/* Organic tilt on alternate cards */
.case-card:nth-child(2n) { transform: rotate(0.5deg); }
.case-card:nth-child(2n+1) { transform: rotate(-0.3deg); }
.case-card:hover { transform: translateY(-6px) rotate(0deg); box-shadow: var(--shadow-lg); color: inherit; }
.case-card-tag {
    position: absolute; top: 12px; right: 12px; z-index: 2;
    padding: 0.25rem 0.75rem; border-radius: 9999px;
    font-size: 0.7rem; font-weight: 600; color: #FFFFFF;
    background: rgba(10,37,64,0.7); backdrop-filter: blur(4px);
}
.case-img { aspect-ratio: 16/10; overflow: hidden; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.case-card:hover .case-img img { transform: scale(1.05); }
.case-info { padding: 1.25rem; }
.case-info h4 { font-size: 1rem; font-weight: 600; color: var(--c-primary); margin-bottom: 0.375rem; }
.case-info p { font-size: 0.8rem; color: var(--c-text-light); line-height: 1.6; }

/* ========== ADVANTAGES ========== */
.advantages-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 968px) { .advantages-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .advantages-grid { grid-template-columns: 1fr; } }

.advantage-card {
    position: relative; border-radius: var(--radius-lg); overflow: hidden;
    background: #FFFFFF; border: 1px solid var(--c-border-light);
    transition: all var(--transition-base);
}
.advantage-card:hover { border-color: var(--c-accent); box-shadow: var(--shadow-md); transform: translateY(-5px); }
/* Stagger animation for advantage cards */
.advantage-card:nth-child(1) .advantage-card-inner { animation-delay: 0s; }
.advantage-card:nth-child(2) .advantage-card-inner { animation-delay: 0.1s; }
.advantage-card:nth-child(3) .advantage-card-inner { animation-delay: 0.2s; }
.advantage-card-bg-glow {
    position: absolute; top: -50%; right: -50%; width: 200px; height: 200px;
    border-radius: 50%; background: radial-gradient(circle, rgba(198,148,62,0.08), transparent 70%);
    pointer-events: none; transition: opacity var(--transition-base);
    opacity: 0;
}
.advantage-card:hover .advantage-card-bg-glow { opacity: 1; }
/* Diagonal decorative line on advantage cards */
.advantage-card::before {
    content: ''; position: absolute; top: 0; right: 0; width: 0; height: 0;
    border-top: 40px solid rgba(198,148,62,0.05); border-left: 40px solid transparent;
    transition: all var(--transition-base); pointer-events: none;
}
.advantage-card:hover::before { border-top-width: 60px; border-left-width: 60px; }
.advantage-card-inner { display: flex; gap: 1rem; padding: 1.5rem; position: relative; }
.advantage-card-icon {
    width: 3rem; height: 3rem; border-radius: var(--radius-sm); flex-shrink: 0;
    background: linear-gradient(135deg, rgba(198,148,62,0.1), rgba(198,148,62,0.05));
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-base);
}
.advantage-card:hover .advantage-card-icon {
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light));
    box-shadow: 0 4px 15px rgba(198,148,62,0.3);
}
.advantage-card-icon svg { width: 24px; height: 24px; color: var(--c-accent); transition: color var(--transition-base); }
.advantage-card:hover .advantage-card-icon svg { color: #FFFFFF; }
.advantage-card-inner h4 { font-size: 1rem; font-weight: 700; color: var(--c-primary); margin-bottom: 0.375rem; }
.advantage-card-inner p { font-size: 0.85rem; color: var(--c-text-light); line-height: 1.6; }
.advantage-card-bottom-line {
    height: 3px; background: linear-gradient(90deg, var(--c-accent), var(--c-accent-light));
    opacity: 0; transition: opacity var(--transition-base);
}
.advantage-card:hover .advantage-card-bottom-line { opacity: 1; }

/* ========== NEWS ========== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 768px) { .news-grid { grid-template-columns: 1fr; } }

.news-card {
    display: block; border-radius: var(--radius-lg); overflow: hidden;
    background: #FFFFFF; border: 1px solid var(--c-border-light);
    transition: all var(--transition-base);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--c-accent); }
.news-card-img { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.news-card:hover .news-card-img img { transform: scale(1.05); }
.news-date-badge {
    position: absolute; bottom: 12px; left: 12px;
    padding: 0.5rem 0.75rem; border-radius: var(--radius-sm);
    background: rgba(10,37,64,0.85); backdrop-filter: blur(8px);
    text-align: center; color: #FFFFFF;
}
.news-date-badge .day { font-size: 1.25rem; font-weight: 800; line-height: 1; }
.news-date-badge .my { font-size: 0.65rem; margin-top: 0.125rem; opacity: 0.8; }
.news-card-body { padding: 1.25rem; }
.news-card-body h4 { font-size: 1rem; font-weight: 600; color: var(--c-primary); margin-bottom: 0.5rem; line-height: 1.4; }
.news-card-body p { font-size: 0.85rem; color: var(--c-text-light); line-height: 1.6; margin-bottom: 1rem; }
.news-read-more {
    display: inline-flex; align-items: center; gap: 0.375rem;
    font-size: 0.8rem; font-weight: 600; color: var(--c-accent);
    transition: gap var(--transition-base);
}
.news-read-more svg { width: 14px; height: 14px; }
.news-card:hover .news-read-more { gap: 0.625rem; }

/* ========== PARTNERS ========== */
.partners-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1.25rem; }
@media (max-width: 1024px) { .partners-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 640px) { .partners-grid { grid-template-columns: repeat(3, 1fr); } }

/* ========== STRENGTH LIST ========== */
.strength-list { display: flex; flex-direction: column; gap: 1.25rem; margin-top: 2rem; }
.strength-item {
    display: flex; align-items: flex-start; gap: 1.25rem;
    background: #fff; border-radius: 1rem; padding: 1.5rem 1.75rem;
    box-shadow: 0 2px 12px rgba(10,37,64,0.07);
    border-left: 4px solid var(--c-accent);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.strength-item:hover { box-shadow: 0 6px 24px rgba(10,37,64,0.13); transform: translateY(-2px); }
.strength-icon {
    flex-shrink: 0; width: 2.75rem; height: 2.75rem;
    background: var(--c-primary); border-radius: 0.75rem;
    display: flex; align-items: center; justify-content: center;
    color: #fff;
}
.strength-icon svg { width: 1.4rem; height: 1.4rem; }
.strength-body h4 { font-size: 1.05rem; font-weight: 700; color: var(--c-primary); margin-bottom: 0.4rem; }
.strength-body p { font-size: 0.92rem; color: var(--c-text-muted); line-height: 1.8; margin: 0; }
@media (max-width: 640px) {
    .strength-item { flex-direction: column; gap: 0.75rem; }
}

.partner-card {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 1.25rem 1rem; border-radius: var(--radius-md);
    background: #FFFFFF; border: 1px solid var(--c-border-light);
    transition: all var(--transition-base); text-align: center;
    position: relative; overflow: hidden;
}
.partner-card::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(198,148,62,0.03), transparent 50%);
    opacity: 0; transition: opacity var(--transition-base);
}
.partner-card:hover { border-color: var(--c-accent); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.partner-card:hover::after { opacity: 1; }
.partner-card img { width: 120px; height: 80px; object-fit: contain; filter: none; opacity: 1; transition: all var(--transition-base); }
.partner-card:hover img { filter: none; opacity: 1; transform: scale(1.05); }
.partner-card-text { font-size: 1rem; font-weight: 700; color: var(--c-primary); letter-spacing: 0.5px; text-align: center; }
.partner-card-name { font-size: 0.7rem; color: var(--c-text-lighter); margin-top: 4px; text-align: center; }

/* ========== BREADCRUMB ========== */
.breadcrumb {
    display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
    padding: 1rem 0; font-size: 0.85rem;
}
.bc-home { display: inline-flex; align-items: center; gap: 0.25rem; color: var(--c-accent); }
.bc-home svg { width: 16px; height: 16px; }
.bc-sep { color: var(--c-text-lighter); }
.breadcrumb a { color: var(--c-text-light); transition: color var(--transition-fast); }
.breadcrumb a:hover { color: var(--c-accent); }
.bc-current { color: var(--c-text-lighter); }

/* ========== PAGE BANNER (Inner Pages) ========== */
.page-banner {
    position: relative; padding: 8rem 0 5rem; text-align: center;
    background: var(--c-primary); overflow: hidden;
}
.page-banner-bg {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    opacity: 1;
}
.page-banner::before {
    content: ''; position: absolute; inset: 0;
    background: transparent;
}
/* 泰山山脉元素替代波浪 */
.page-banner::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 160px; z-index: 1;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 160' preserveAspectRatio='none'%3E%3Cdefs%3E%3ClinearGradient id='g1' x1='0' y1='0' x2='0' y2='1'%3E%3Cstop offset='0' stop-color='%23C6943E' stop-opacity='0.15'/%3E%3Cstop offset='1' stop-color='%23C6943E' stop-opacity='0'/%3E%3C/linearGradient%3E%3C/defs%3E%3C!-- 泰山山脉轮廓 --%3E%3Cpath fill='rgba(255,255,255,0.04)' d='M0,160 L0,105 Q100,75 200,90 Q320,50 420,72 Q520,38 600,58 Q660,28 700,38 Q720,18 740,12 Q760,6 780,14 Q800,24 840,36 Q920,18 1000,42 Q1080,22 1160,50 Q1260,32 1360,62 Q1400,78 1440,90 L1440,160 Z'/%3E%3Cpath fill='url(%23g1)' d='M0,160 L0,120 Q150,95 300,110 Q450,80 580,100 Q660,72 720,60 Q780,50 840,65 Q960,82 1100,92 Q1280,104 1440,115 L1440,160 Z'/%3E%3Cpath fill='rgba(255,255,255,0.015)' d='M0,160 L0,140 Q360,125 720,135 Q1080,122 1440,138 L1440,160 Z'/%3E%3C/svg%3E");
    background-size: 100% 100%; background-repeat: no-repeat; pointer-events: none;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 {
    font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; color: #FFFFFF; margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5), 0 4px 20px rgba(0,0,0,0.4);
}
.page-banner p {
    font-size: 1rem; color: rgba(255,255,255,0.9);
    text-shadow: 0 1px 3px rgba(0,0,0,0.6);
}
/* 注意：山脈背景已用::after实现，不再需要波浪 SVG */
.page-banner-wave { display: none; }

/* ========== PRODUCT DETAIL PAGE ========== */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
@media (max-width: 768px) { .product-detail { grid-template-columns: 1fr; gap: 2rem; } }
.product-detail-img {
    border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid var(--c-border); position: sticky; top: 100px;
}
.product-detail-img img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.product-detail-info h2 { font-size: 1.75rem; font-weight: 700; color: var(--c-primary); margin-bottom: 1rem; }
.product-detail-meta {
    display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 1.5rem;
    padding: 1rem; background: var(--c-bg-warm); border-radius: var(--radius-sm);
    border-left: 3px solid var(--c-accent);
}
.product-detail-meta span { font-size: 0.85rem; color: var(--c-text-light); }
.product-detail-meta strong { color: var(--c-accent); }
.product-detail-desc { line-height: 1.8; color: var(--c-text); }
.product-detail-desc p { margin-bottom: 1rem; }

/* ========== CASE DETAIL ========== */
.case-detail { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; align-items: start; }
@media (max-width: 968px) { .case-detail { grid-template-columns: 1fr; gap: 2rem; } }
.case-detail-img {
    border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid var(--c-border); position: sticky; top: 100px;
}
.case-detail-img img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.case-detail-body h2 { font-size: 1.75rem; font-weight: 700; color: var(--c-primary); margin-bottom: 1rem; }
.case-detail-summary {
    font-size: 1rem; color: var(--c-text-light); line-height: 1.7;
    margin-bottom: 1.5rem; padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--c-border);
}
.case-detail-content { line-height: 1.8; color: var(--c-text); }
.case-detail-content p { margin-bottom: 1rem; }
.case-detail-content img { border-radius: var(--radius-md); margin: 1rem 0; max-width: 100%; }

/* ========== CONTACT ========== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
@media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info-card {
    display: flex; gap: 1rem; padding: 1.5rem; border-radius: var(--radius-md);
    background: var(--c-bg-warm); border: 1px solid var(--c-border-light);
    margin-bottom: 1rem; transition: all var(--transition-base);
    position: relative; overflow: hidden;
}
.contact-info-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 3px; height: 100%;
    background: linear-gradient(180deg, var(--c-accent), var(--c-accent-light));
    opacity: 0; transition: opacity var(--transition-base);
}
.contact-info-card:hover { border-color: var(--c-accent); box-shadow: var(--shadow-sm); }
.contact-info-card:hover::before { opacity: 1; }
.contact-info-icon {
    width: 3rem; height: 3rem; border-radius: var(--radius-sm); flex-shrink: 0;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light));
    display: flex; align-items: center; justify-content: center;
}
.contact-info-icon svg { width: 20px; height: 20px; color: #FFFFFF; }
.contact-info-card h4 { font-size: 0.95rem; font-weight: 600; color: var(--c-primary); margin-bottom: 0.25rem; }
.contact-info-card p { font-size: 0.875rem; color: var(--c-text-light); }

/* Contact Form */
.contact-form {
    padding: 2rem; border-radius: var(--radius-lg); background: #FFFFFF; border: 1px solid var(--c-border);
    position: relative; overflow: hidden;
}
.contact-form::before {
    content: ''; position: absolute; top: 0; right: 0; width: 150px; height: 150px;
    background: radial-gradient(circle, rgba(198,148,62,0.05), transparent 70%);
    pointer-events: none;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }
@media (max-width: 480px) { .form-row { grid-template-columns: 1fr; } }
.form-field { margin-bottom: 1rem; }
.form-field label { display: block; font-size: 0.85rem; font-weight: 500; color: var(--c-text); margin-bottom: 0.375rem; }
.form-field input, .form-field textarea, .form-field select {
    width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--c-border);
    border-radius: var(--radius-sm); font-size: 0.95rem; font-family: var(--font-body);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--c-accent); box-shadow: 0 0 0 3px rgba(198,148,62,0.1); }
.form-field textarea { min-height: 120px; resize: vertical; }
.form-submit {
    width: 100%; padding: 0.875rem; border: none; border-radius: 9999px;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light));
    color: #FFFFFF; font-size: 1rem; font-weight: 600; cursor: pointer;
    transition: all var(--transition-base); position: relative; overflow: hidden;
}
.form-submit:hover { box-shadow: 0 8px 25px -5px rgba(198,148,62,0.4); transform: translateY(-2px); }
.form-message { text-align: center; padding: 0.75rem; margin-top: 1rem; border-radius: var(--radius-sm); font-size: 0.875rem; }
.form-message.success { background: #D1FAE5; color: #065F46; }
.form-message.error { background: #FEE2E2; color: #991B1B; }

/* ========== HONORS ========== */
.honors-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
@media (max-width: 968px) { .honors-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .honors-grid { grid-template-columns: 1fr; } }

.honor-card {
    border-radius: var(--radius-lg); overflow: hidden;
    background: #FFFFFF; border: 1px solid var(--c-border-light);
    transition: all var(--transition-base);
}
.honor-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.honor-card-img { aspect-ratio: 4/3; overflow: hidden; }
.honor-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.honor-card:hover .honor-card-img img { transform: scale(1.05); }
.honor-info { padding: 1rem 1.25rem; }
.honor-info h4 { font-size: 0.95rem; font-weight: 600; color: var(--c-primary); margin-bottom: 0.25rem; }
.honor-info p { font-size: 0.8rem; color: var(--c-text-light); }

/* ========== EMPTY STATE ========== */
.empty-state { text-align: center; padding: 4rem 2rem; grid-column: 1 / -1; }
.empty-state-icon { margin: 0 auto 1rem; opacity: 0.3; }
.empty-state-icon svg { width: 64px; height: 64px; color: var(--c-text-lighter); }
.empty-state h3 { font-size: 1.25rem; color: var(--c-text-light); margin-bottom: 0.5rem; }
.empty-state p { font-size: 0.875rem; color: var(--c-text-lighter); }

/* ========== PAGINATION ========== */
.pagebar { display: flex; gap: 0.5rem; margin-top: 2.5rem; justify-content: center; flex-wrap: wrap; }
.page-link {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.5rem 1rem; border-radius: var(--radius-sm);
    font-size: 0.875rem; color: var(--c-text); background: #FFFFFF;
    border: 1px solid var(--c-border); transition: all var(--transition-fast);
    text-decoration: none;
}
.page-link:hover { border-color: var(--c-accent); color: var(--c-accent); }
.page-link.current { background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light)); color: #FFFFFF; border-color: var(--c-accent); box-shadow: 0 2px 8px rgba(198,148,62,0.25); }

/* ========== BACK TO TOP ========== */
.back-to-top {
    position: fixed; bottom: 2rem; right: 2rem; z-index: 900;
    width: 3rem; height: 3rem; border-radius: 50%;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-light));
    border: none; color: #FFFFFF; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-md); opacity: 0; transform: translateY(20px);
    transition: all var(--transition-base); pointer-events: none;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { box-shadow: var(--shadow-lg), var(--shadow-glow); transform: translateY(-4px); }
.back-to-top svg { width: 20px; height: 20px; }

/* ========== FOOTER ========== */
.footer {
    position: relative; background: var(--c-bg-dark); color: #FFFFFF;
    padding: 1.5rem 0 0; overflow: hidden;
}
/* Enhanced mountain silhouette in footer */
.footer-mountain { position: absolute; top: 0; left: 0; right: 0; pointer-events: none; opacity: 0.5; }
.footer-mountain svg { width: 100%; height: 200px; }
/* Taishan ridge overlay */
.footer::before {
    content: ''; position: absolute; top: 40px; left: 0; right: 0; height: 150px; z-index: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 150' preserveAspectRatio='none'%3E%3Cpath fill='rgba(198,148,62,0.03)' d='M0,150 L0,100 Q120,60 240,85 Q360,30 480,65 Q600,20 720,50 Q840,10 960,40 Q1080,5 1200,30 Q1320,15 1440,25 L1440,150 Z'/%3E%3C/svg%3E");
    background-size: 100% 100%; background-repeat: no-repeat; pointer-events: none;
}
.footer-wave { position: absolute; top: -2px; left: 0; right: 0; line-height: 0; transform: rotate(180deg); }
.footer-wave svg { width: 100%; height: 50px; fill: var(--c-bg-dark); }

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid rgba(255,255,255,0.08); position: relative; z-index: 1; }
@media (max-width: 968px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; } }
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; color: #FFFFFF; margin-bottom: 0.875rem; position: relative; padding-bottom: 0.5rem; }
.footer-col h4::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 2px;
    background: linear-gradient(90deg, var(--c-accent), transparent);
}

.footer-logo { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.footer-logo-icon {
    width: 3.25rem; height: 3.25rem; border-radius: 10px; overflow: hidden;
    background: #FFFFFF;
    padding: 2px;
}
.footer-logo-icon img { width: 100%; height: 100%; object-fit: cover; }
.footer-logo-text h5 { font-size: 1rem; font-weight: 700; color: #FFFFFF; white-space: nowrap; }
.footer-logo-text span { font-size: 0.7rem; color: rgba(255,255,255,0.5); }
.footer-about { font-size: 0.85rem; color: rgba(255,255,255,0.5); line-height: 1.7; }

.footer-links { display: flex; flex-direction: column; gap: 0.45rem; }
.footer-links a { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; color: rgba(255,255,255,0.55); transition: all var(--transition-fast); }
.footer-links a:hover { color: var(--c-accent-light); gap: 0.75rem; }
.footer-link-dot { width: 5px; height: 5px; border-radius: 50%; background: rgba(255,255,255,0.2); transition: background var(--transition-fast); }
.footer-links a:hover .footer-link-dot { background: var(--c-accent); }

.footer-contact-list { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-contact-item { display: flex; align-items: flex-start; gap: 0.75rem; }
.footer-contact-item svg { width: 18px; height: 18px; color: var(--c-accent-light); flex-shrink: 0; margin-top: 0.125rem; }
.footer-contact-item span { font-size: 0.85rem; color: rgba(255,255,255,0.55); }

.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; padding: 0.875rem 0; position: relative; z-index: 1; }
.footer-copyright { font-size: 0.8rem; color: rgba(255,255,255,0.4); }
.footer-bottom-links { font-size: 0.8rem; }
.footer-bottom-links a { color: rgba(255,255,255,0.4); transition: color var(--transition-fast); }
.footer-bottom-links a:hover { color: var(--c-accent-light); }

/* ========== PAGER ========== */
.pager-desktop { display: flex; flex-direction: column; align-items: center; gap: 0.75rem; margin-top: 3rem; }
.pager-info { font-size: 0.875rem; color: var(--c-text-light); }
.pager-links { display: flex; align-items: center; gap: 0.375rem; flex-wrap: wrap; justify-content: center; }
.pager-links a, .pager-links span {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 2.25rem; height: 2.25rem; padding: 0 0.625rem;
    border-radius: 8px; font-size: 0.875rem; font-weight: 500;
    border: 1px solid var(--c-border); background: #FFFFFF; color: var(--c-text);
    transition: all var(--transition-fast);
}
.pager-links a:hover {
    border-color: var(--c-accent); color: var(--c-accent);
    box-shadow: 0 4px 12px rgba(198,148,62,0.12);
}
.pager-links span.current {
    background: var(--c-primary); border-color: var(--c-primary); color: #FFFFFF;
}
.pager-links span.disabled {
    color: var(--c-text-lighter); background: var(--c-bg); cursor: not-allowed;
}
.pager-prev, .pager-next { min-width: 4rem !important; }

@media (max-width: 768px) {
    .pager-desktop { margin-top: 2rem; }
    .pager-info { font-size: 0.8rem; }
    .pager-links a, .pager-links span { min-width: 2rem; height: 2rem; font-size: 0.8rem; }
}

@media (max-width: 640px) { .mobile-hide { display: none; } }

/* ========== FLOATING DECORATIVE ELEMENTS ========== */
.deco-circle {
    position: absolute; border-radius: 50%; pointer-events: none;
    border: 1px solid rgba(198,148,62,0.08);
}
.deco-circle-1 { width: 300px; height: 300px; top: 10%; right: -150px; }
.deco-circle-2 { width: 200px; height: 200px; bottom: 5%; left: -100px; }
.deco-line {
    position: absolute; height: 1px; pointer-events: none;
    background: linear-gradient(90deg, transparent, rgba(198,148,62,0.1), transparent);
}

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes bounceDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}
@keyframes pulseGlow {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(198,148,62,0.4); }
    50% { opacity: 0.7; box-shadow: 0 0 8px 4px rgba(198,148,62,0); }
}
@keyframes progressFlow {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 0%; }
}
@keyframes dropdownSlide {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
@keyframes rotateGlow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Scroll Animation Base */
.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease-out, transform 0.7s ease-out; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }
/* Fix for staggered product cards */
.product-card.animate-on-scroll.visible { transform: translateY(12px); }
.product-card:nth-child(3n).animate-on-scroll.visible { transform: translateY(6px); }

/* ========== RESPONSIVE FINE-TUNING ========== */
@media (max-width: 768px) {
    .section { padding: 3rem 0; }
    .section-header { margin-bottom: 2rem; }
    .section-header-row { flex-direction: column; align-items: flex-start; gap: 1rem; }
    .hero { min-height: 500px; }
    .hero-inner { max-width: 100%; }
    .hero::before { display: none; }
    .hero-dots { bottom: 6rem; right: 1.5rem; }
    .stats-section { margin-top: 0; padding: 2.5rem 0; }
    .contact-grid { gap: 2rem; }
    .product-detail { gap: 1.5rem; }
    .product-detail-img { position: static; }
    .product-card:nth-child(2n),
    .product-card:nth-child(3n) { transform: none; }
    .product-card:hover { transform: translateY(-6px); }
    .case-card { transform: none !important; }
}