/* ==========================================
   简思智学 官方网站 V6 · 深色国际高端版
   定稿依据：【最终定稿·天工开物版】
   设计风格：深色大气 + 爱玛橙主色 + 国风雅致
   参考：Stripe Dark / Linear / Notion Dark
   ========================================== */

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

:root {
    /* 主色 - 爱玛橙（定稿指定） */
    --orange-700: #CC5500;
    --orange-600: #E06000;
    --orange-500: #FF6D00;
    --orange-400: #FF8533;
    --orange-300: #FF9E66;
    --orange-200: #FFB799;
    --orange-100: #332211;

    /* 辅助色 - 墨青 */
    --ink-900: #1C1C1E;
    --ink-800: #242428;
    --ink-700: #2C2C32;
    --ink-600: #36363D;
    --ink-500: #2A3140;
    --ink-400: #404A5A;
    --ink-300: #5A6575;
    --ink-200: #758090;
    --ink-100: #9AA5B0;

    /* 金色点缀 */
    --gold-500: #C8A84E;
    --gold-400: #D8BC70;
    --gold-300: #E8D5A0;

    /* 背景 */
    --bg-deep: #1C1C1E;
    --bg-surface: #242428;
    --bg-elevated: #2C2C32;
    --bg-card: #36363D;
    --bg-hover: #404048;
    --bg-glass: rgba(20, 24, 32, 0.6);

    /* 渐变 */
    --gradient-hero: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(255,109,0,0.05) 0%, transparent 60%),
                     radial-gradient(ellipse 60% 50% at 70% 30%, rgba(200,168,78,0.03) 0%, transparent 50%),
                     linear-gradient(180deg, #1C1C1E 0%, #242428 50%, #2C2C32 100%);
    --gradient-primary: linear-gradient(135deg, #FF6D00 0%, #FF8533 50%, #FF9E66 100%);
    --gradient-gold: linear-gradient(135deg, #C8A84E 0%, #D8BC70 60%, #E8D5A0 100%);
    --gradient-card: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, transparent 100%);

    /* 文字 */
    --text-primary: #F0F2F5;
    --text-secondary: #9AA5B0;
    --text-tertiary: #5A6575;
    --text-inverse: #1C1C1E;

    /* 边框 */
    --border-subtle: rgba(255,255,255,0.06);
    --border-medium: rgba(255,255,255,0.1);
    --border-orange: rgba(255, 109, 0, 0.2);

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 28px rgba(0,0,0,0.5);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.6);
    --shadow-orange: 0 8px 24px rgba(255, 109, 0, 0.2);

    --font-sans: -apple-system, 'SF Pro Display', 'SF Pro Text', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
    --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'STSong', serif;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --radius-full: 9999px;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); background: var(--bg-deep); color: var(--text-secondary); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 768px) { .container { padding: 0 20px; } }

::selection { background: rgba(255, 109, 0, 0.25); color: var(--text-primary); }

/* ===== Navigation ===== */
.navbar {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background: rgba(28, 28, 30, 0.75);
    backdrop-filter: blur(20px) saturate(1.3);
    -webkit-backdrop-filter: blur(20px) saturate(1.3);
    border-bottom: 1px solid transparent;
    transition: all var(--transition);
.scroll-progress { position: absolute; bottom: -1px; left: 0; width: 0%; height: 2px; background: var(--gradient-primary); z-index: 1001; transition: width 0.1s linear; }
}
.navbar.scrolled { background: rgba(28, 28, 30, 0.95); border-bottom-color: var(--border-subtle); }

.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.logo { display: flex; align-items: center; gap: 10px; }
.logo-img { height: 32px; width: auto; border-radius: var(--radius-sm); }
.logo-text { font-size: 17px; font-weight: 600; color: var(--text-primary); letter-spacing: 0.5px; }
.logo-text-sub { font-size: 9px; color: var(--text-tertiary); letter-spacing: 2px; font-weight: 400; display: block; margin-top: -2px; }

.nav-links { display: flex; gap: 2px; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--text-secondary); padding: 8px 14px; border-radius: var(--radius-full); transition: all var(--transition-fast); }
.nav-links a:hover { color: var(--text-primary); background: var(--bg-hover); }
.nav-links a.active { color: var(--orange-500); background: rgba(255, 109, 0, 0.1); }
.nav-cta { background: var(--gradient-primary) !important; color: white !important; padding: 8px 20px !important; font-weight: 600 !important; position: relative; overflow: hidden; animation: ctaPulse 2.5s ease-in-out infinite; }
@keyframes ctaPulse { 0%,100% { box-shadow: 0 4px 12px rgba(255,109,0,0.15); } 50% { box-shadow: 0 4px 20px rgba(255,109,0,0.35), 0 0 0 1px rgba(255,109,0,0.1); } }
.nav-cta:hover { animation: none; box-shadow: 0 8px 28px rgba(255,109,0,0.4); transform: translateY(-2px); }
.nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 22px; cursor: pointer; padding: 8px; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 92vh; display: flex; align-items: center; justify-content: center; overflow: hidden; background: var(--gradient-hero); padding-top: 68px; }
#particleCanvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0.25; }
.hero-glow { position: absolute; width: 550px; height: 550px; border-radius: 50%; background: radial-gradient(circle, rgba(255,109,0,0.08) 0%, transparent 70%); top: 0; right: -5%; pointer-events: none; animation: glowFloat 7s ease-in-out infinite; }
.hero-glow-2 { position: absolute; width: 400px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(200,168,78,0.05) 0%, transparent 70%); bottom: 10%; left: -8%; pointer-events: none; animation: glowFloat 9s ease-in-out infinite reverse; }
@keyframes glowFloat { 0%,100% { opacity: 0.4; transform: scale(1); } 50% { opacity: 0.8; transform: scale(1.06); } }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 860px; }

.hero-badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px 5px 6px; background: rgba(255, 109, 0, 0.1); border: 1px solid rgba(255, 109, 0, 0.15); border-radius: var(--radius-full); font-size: 12px; font-weight: 500; color: var(--orange-400); margin-bottom: 24px; }
.hero-badge-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--orange-500); animation: dotPulse 2s ease-in-out infinite; }
@keyframes dotPulse { 0%,100% { opacity: 1; } 50% { opacity: 0.2; } }

.hero-title { font-size: clamp(40px, 5.5vw, 72px); font-weight: 700; color: var(--text-primary); line-height: 1.08; margin-bottom: 6px; letter-spacing: -1.5px; }
.hero-title .highlight { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-title-sub { font-size: clamp(18px, 2vw, 26px); font-weight: 300; color: var(--orange-500); letter-spacing: 3px; margin-bottom: 24px; font-family: var(--font-serif); }
.hero-desc { font-size: 16px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 32px; max-width: 540px; margin-left: auto; margin-right: auto; }

.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 12px 28px; border-radius: var(--radius-full); font-size: 14px; font-weight: 600; cursor: pointer; transition: all var(--transition-fast); border: none; line-height: 1; white-space: nowrap; }
.btn-primary { background: var(--gradient-primary); color: white; box-shadow: var(--shadow-orange); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(255, 109, 0, 0.35); }
.btn-secondary { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border-medium); }
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--ink-400); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--orange-400); border: 1px solid rgba(255, 109, 0, 0.3); }
.btn-outline:hover { background: rgba(255, 109, 0, 0.08); border-color: var(--orange-500); transform: translateY(-2px); }
.btn-ink { background: var(--ink-500); color: white; }
.btn-ink:hover { background: var(--ink-400); transform: translateY(-2px); }
.btn-sm { padding: 8px 20px; font-size: 13px; }

.hero-scroll { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 4px; color: var(--text-tertiary); font-size: 10px; letter-spacing: 3px; text-transform: uppercase; }
.hero-scroll-line { width: 1px; height: 28px; background: linear-gradient(180deg, var(--text-tertiary), transparent); animation: scrollPulse 2.5s ease-in-out infinite; }
@keyframes scrollPulse { 0% { transform: scaleY(0.3); opacity: 0.3; } 50% { transform: scaleY(1); opacity: 1; } 100% { transform: scaleY(0.3); opacity: 0.3; } }

/* ===== Quick Entries ===== */
.quick-entries { padding: 24px 0; background: var(--bg-surface); border-bottom: 1px solid var(--border-subtle); }
.quick-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.quick-item { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-radius: var(--radius-md); background: var(--bg-elevated); border: 1px solid var(--border-subtle); transition: all var(--transition-fast); cursor: pointer; }
.quick-item:hover { border-color: var(--border-orange); background: rgba(255, 109, 0, 0.04); transform: translateY(-2px); }
.quick-icon { width: 40px; height: 40px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; background: rgba(255, 109, 0, 0.1); }
.quick-info h4 { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 2px; }
.quick-info p { font-size: 12px; color: var(--text-tertiary); }

/* ===== Stats ===== */
.stats { padding: 60px 0; background: var(--bg-surface); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-card { text-align: center; padding: 32px 16px; border-radius: var(--radius-lg); background: var(--bg-elevated); border: 1px solid var(--border-subtle); transition: all var(--transition); }
.stat-card:hover { border-color: var(--border-orange); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-number { font-size: 48px; font-weight: 700; color: var(--text-primary); display: inline-block; line-height: 1; letter-spacing: -1.5px; }
.stat-unit { font-size: 18px; font-weight: 500; color: var(--orange-500); margin-left: 2px; }
.stat-label { font-size: 13px; color: var(--text-tertiary); margin-top: 6px; font-weight: 500; }

/* ===== Section Common ===== */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-surface); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag { display: inline-block; font-size: 11px; font-weight: 600; color: var(--orange-500); letter-spacing: 3px; text-transform: uppercase; margin-bottom: 8px; }
.section-title { font-size: clamp(28px, 3vw, 38px); font-weight: 700; color: var(--text-primary); line-height: 1.2; margin-bottom: 10px; letter-spacing: -0.3px; }
.section-subtitle { font-size: 16px; color: var(--text-secondary); max-width: 500px; margin-left: auto; margin-right: auto; line-height: 1.6; }

/* ===== Philosophy ===== */
.philosophy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.philosophy-text .lead { font-size: 18px; font-weight: 500; color: var(--text-primary); line-height: 1.7; margin-bottom: 16px; }
.philosophy-text p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 14px; }
.philosophy-virtues { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.virtue-item { padding: 12px 16px; background: var(--bg-elevated); border-radius: var(--radius-md); border: 1px solid var(--border-subtle); transition: all var(--transition-fast); }
.virtue-item:hover { border-color: var(--border-orange); }
.virtue-item .num { font-size: 18px; font-weight: 700; color: var(--orange-500); line-height: 1; margin-bottom: 2px; }
.virtue-item h4 { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.philosophy-image { border-radius: var(--radius-xl); background: transparent; aspect-ratio: auto; display: flex; align-items: center; justify-content: center; border: none; overflow: hidden; position: relative; }
.philosophy-image-content { position: relative; z-index: 1; text-align: center; padding: 32px; }
.philosophy-image-icon { font-size: 56px; margin-bottom: 12px; }
.philosophy-image-text { font-size: 13px; color: var(--text-tertiary); line-height: 1.5; }

/* ===== 未来学习中心 ===== */
.future-center { background: var(--bg-surface); position: relative; overflow: hidden; }
.future-center::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 1px; background: linear-gradient(90deg, transparent, var(--border-orange), transparent); }

.future-intro { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.future-intro p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 12px; }
.future-intro .highlight-text { color: var(--orange-400); font-weight: 500; }

.future-tagline { text-align: center; margin-bottom: 40px; }
.future-tagline-inner { display: inline-flex; align-items: center; gap: 24px; padding: 12px 28px; background: rgba(255,109,0,0.05); border: 1px solid rgba(255,109,0,0.1); border-radius: var(--radius-full); }
.future-tagline-item { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-secondary); }
.future-tagline-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--orange-500); }
.future-tagline-item strong { color: var(--text-primary); }

.future-engines { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 48px; }
.future-engine-card { padding: 0; border-radius: var(--radius-xl); border: 1px solid rgba(255,109,0,0.08); background: linear-gradient(160deg, rgba(255,109,0,0.04) 0%, var(--bg-elevated) 40%, rgba(255,109,0,0.02) 100%); transition: all var(--transition); position: relative; min-height: 380px; display: flex; align-items: center; justify-content: center; }
.future-engine-card:hover { border-color: rgba(255,109,0,0.2); transform: translateY(-4px); box-shadow: 0 16px 48px rgba(255,109,0,0.08); }
.future-engine-tag { display: inline-block; padding: 2px 8px; border-radius: var(--radius-full); font-size: 10px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 10px; }
.future-engine-tag-orange { background: rgba(255,109,0,0.1); color: var(--orange-400); border: 1px solid rgba(255,109,0,0.1); }
.future-engine-tag-ink { background: rgba(36,48,64,0.08); color: var(--ink-400); border: 1px solid rgba(36,48,64,0.1); }

/* 卡片设计 - 轨道动画 */
.engine-card-bg { position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, transparent, var(--orange-500), var(--orange-400), var(--orange-500), transparent); border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
.engine-card-orbit { position: absolute; top: 50%; left: 50%; width: 300px; height: 300px; transform: translate(-50%, -50%); pointer-events: none; opacity: 0.4; }
.orbit-ring { position: absolute; top: 50%; left: 50%; border-radius: 50%; border: 1.5px solid rgba(255,109,0,0.12); transform: translate(-50%, -50%); animation: orbitSpin 8s linear infinite; }
.orbit-ring-1 { width: 260px; height: 260px; }
.orbit-ring-2 { width: 200px; height: 200px; animation-direction: reverse; animation-duration: 5s; opacity: 0.8; }
.orbit-dot { position: absolute; width: 6px; height: 6px; border-radius: 50%; background: var(--orange-500); box-shadow: 0 0 8px rgba(255,109,0,0.5); }
.orbit-dot-1 { top: 12px; left: 50%; margin-left: -3px; animation: dotFloat 2s ease-in-out infinite; }
.orbit-dot-2 { top: 50%; right: 12px; margin-top: -3px; animation: dotFloat 2s ease-in-out infinite 0.7s; }
.orbit-dot-3 { bottom: 12px; left: 50%; margin-left: -3px; animation: dotFloat 2s ease-in-out infinite 1.4s; }
@keyframes orbitSpin { 0% { transform: translate(-50%, -50%) rotate(0deg); } 100% { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes dotFloat { 0%,100% { opacity: 0.3; transform: scale(1); } 50% { opacity: 1; transform: scale(1.8); box-shadow: 0 0 16px rgba(255,109,0,0.6); } }

/* 内容区 */
.engine-card-content { position: relative; z-index: 1; padding: 44px 36px; }
.engine-badge-bar { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 20px; }
.engine-badge-inner { width: 24px; height: 1px; background: rgba(255,109,0,0.2); }
.engine-slogan-wrap { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 16px; }
.engine-slogan-mark { font-size: 10px; color: var(--gold-500); opacity: 0.4; }
.future-engine-slogan { font-size: 14px; color: var(--gold-500); font-weight: 500; font-family: var(--font-serif); letter-spacing: 2px; }
.engine-hero-text { margin-bottom: 14px; }
.engine-hero-sub { display: block; font-size: 11px; color: var(--text-tertiary); letter-spacing: 4px; text-transform: uppercase; margin-bottom: 4px; font-weight: 500; }
.engine-hero-main { display: block; font-size: 48px; font-weight: 700; background: linear-gradient(135deg, #FF6D00 0%, #FF9E66 50%, #FF8533 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.1; letter-spacing: 6px; }
.engine-label-box { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 16px; }
.engine-label-dash { width: 16px; height: 1px; background: rgba(255,255,255,0.06); }
.future-engine-label { font-size: 13px; color: var(--orange-400); letter-spacing: 1px; font-weight: 500; }
.future-engine-desc { font-size: 13px; color: var(--text-tertiary); line-height: 1.6; margin-bottom: 16px; }

.future-engine-name { font-size: 18px; font-weight: 700; color: var(--text-primary); margin-bottom: 2px; }
.future-engine-label { font-size: 12px; color: var(--orange-400); margin-bottom: 8px; letter-spacing: 1px; }
.future-engine-desc { font-size: 13px; color: var(--text-tertiary); line-height: 1.6; margin-bottom: 12px; }
.future-engine-modules { display: flex; flex-wrap: wrap; gap: 8px; }
.future-engine-module { font-size: 11px; color: var(--text-secondary); padding: 4px 10px; background: var(--bg-hover); border-radius: var(--radius-full); border: 1px solid var(--border-subtle); }

.engine-pillar { display: inline-flex; flex-direction: column; align-items: center; gap: 6px; padding: 12px 16px; min-width: 72px; border-radius: var(--radius-md); background: linear-gradient(180deg, rgba(255,109,0,0.06) 0%, rgba(255,109,0,0.02) 100%); border: 1px solid rgba(255,109,0,0.08); transition: all var(--transition-fast); cursor: default; }
.engine-pillar:hover { background: linear-gradient(180deg, rgba(255,109,0,0.1) 0%, rgba(255,109,0,0.04) 100%); border-color: rgba(255,109,0,0.2); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(255,109,0,0.06); }
.engine-pillar-icon { width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; line-height: 1; }
.engine-pillar-text { font-size: 12px; font-weight: 600; color: var(--text-secondary); letter-spacing: 0.5px; }
.engine-pillar:hover .engine-pillar-text { color: var(--orange-400); }
.future-engine-slogan { font-size: 13px; color: var(--gold-500); font-weight: 500; margin-bottom: 10px; font-family: var(--font-serif); letter-spacing: 1px; }

.future-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 40px; }
.future-feature-card { padding: 24px; border-radius: var(--radius-lg); border: 1px solid rgba(255,109,0,0.12); background: linear-gradient(135deg, rgba(255,109,0,0.08) 0%, rgba(255,109,0,0.03) 100%); text-align: center; transition: all var(--transition); }
.future-feature-card:hover { border-color: var(--orange-500); transform: translateY(-4px); box-shadow: 0 8px 24px rgba(255,109,0,0.12); }
.future-feature-icon { width: 40px; height: 40px; margin: 0 auto 10px; display: block; }
.future-feature-title { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.future-feature-desc { font-size: 12px; color: var(--text-tertiary); line-height: 1.5; }

.future-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.future-value-card { padding: 28px; border-radius: var(--radius-lg); border: 1px solid var(--border-subtle); background: var(--bg-elevated); transition: all var(--transition); }
.future-value-card:hover { border-color: var(--border-orange); transform: translateY(-3px); }
.future-value-label { font-size: 11px; font-weight: 600; color: var(--orange-500); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 6px; }
.future-value-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.future-value-list { list-style: none; padding: 0; }
.future-value-list li { font-size: 13px; color: var(--text-secondary); padding: 4px 0; padding-left: 14px; position: relative; line-height: 1.5; }
.future-value-list li::before { content: ''; position: absolute; left: 0; top: 11px; width: 4px; height: 4px; border-radius: 50%; background: var(--orange-500); opacity: 0.5; }

.future-summary { text-align: center; padding: 32px; background: rgba(255,109,0,0.04); border: 1px solid rgba(255,109,0,0.1); border-radius: var(--radius-xl); margin-top: 48px; }
.future-summary p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; max-width: 720px; margin: 0 auto; }
.future-summary strong { color: var(--text-primary); }
.future-summary .accent { color: var(--orange-400); }

/* ===== Hexagon ===== */
.hexagon-wrapper { display: flex; align-items: center; justify-content: center; gap: 64px; flex-wrap: wrap; }
#hexCanvas { max-width: 400px; width: 100%; }
.hex-detail { background: var(--bg-elevated); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); padding: 32px 36px; min-width: 360px; max-width: 360px; min-height: 160px; transition: all var(--transition); }
.hex-detail:hover { border-color: var(--border-orange); box-shadow: var(--shadow-md); }
.hex-detail-number { font-size: 40px; font-weight: 700; color: var(--orange-500); line-height: 1; margin-bottom: 6px; }
.hex-detail h4 { font-size: 20px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.hex-detail p { font-size: 15px; color: var(--text-secondary); line-height: 1.4; white-space: nowrap; }

.divider { width: 100%; height: 1px; background: linear-gradient(90deg, transparent, var(--border-subtle), transparent); margin: 0; border: none; }

/* ===== AI Engine ===== */
.engine-section { position: relative; }
.engine-intro { max-width: 680px; margin: 0 auto 48px; text-align: center; font-size: 15px; color: var(--text-secondary); line-height: 1.7; }

.engine-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.engine-card { padding: 44px 36px; border-radius: var(--radius-xl); border: 1px solid var(--border-subtle); background: var(--bg-elevated); transition: all var(--transition); position: relative; overflow: hidden; }
.engine-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; }
.engine-tiangong::before { background: var(--gradient-primary); }
.engine-kaiwu::before { background: var(--gradient-primary); }
.engine-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl); border-color: var(--border-medium); }

.engine-badge { display: inline-block; padding: 3px 10px; border-radius: var(--radius-full); font-size: 10px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 14px; }
.engine-tiangong .engine-badge { background: rgba(255, 109, 0, 0.1); color: var(--orange-400); border: 1px solid rgba(255, 109, 0, 0.15); }
.engine-kaiwu .engine-badge { background: rgba(255, 109, 0, 0.1); color: var(--orange-400); border: 1px solid rgba(255, 109, 0, 0.15); }

.engine-name { font-size: 10px; font-weight: 600; color: var(--text-tertiary); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 2px; }
.engine-title { font-size: 24px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.engine-label { font-size: 11px; font-weight: 500; color: var(--orange-400); margin-bottom: 4px; letter-spacing: 1px; }
.engine-sub { font-size: 13px; color: var(--text-tertiary); margin-bottom: 16px; line-height: 1.5; }

.engine-closed-loop { padding: 14px 16px; background: rgba(255, 109, 0, 0.06); border-radius: var(--radius-md); font-size: 12px; color: rgba(255, 255, 255, 0.75); line-height: 1.6; margin-bottom: 16px; border: 1px solid rgba(255, 109, 0, 0.1); }
.engine-closed-loop strong { color: var(--orange-400); }

.engine-features { margin-bottom: 20px; }
.engine-features li { padding: 8px 0; font-size: 14px; color: var(--text-secondary); padding-left: 20px; position: relative; border-bottom: 1px solid rgba(255,255,255,0.03); }
.engine-features li:last-child { border-bottom: none; }
.engine-features li::before { content: ''; position: absolute; left: 0; top: 14px; width: 5px; height: 5px; border-radius: 50%; background: var(--orange-500); }
.engine-kaiwu .engine-features li::before { background: var(--orange-500); }

.engine-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===== Community ===== */
.community-bg { background: var(--bg-surface); position: relative; }
.community-wrap { position: relative; }
.community-bg-img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; opacity: 0.12; pointer-events: none; z-index: 0; }
.community-wrap .container { position: relative; z-index: 1; }

.community-intro { max-width: 600px; margin: 0 auto 32px; text-align: center; font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

.community-tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 36px; }
.tier-card { text-align: center; padding: 36px 24px; border-radius: var(--radius-xl); border: 1px solid var(--border-subtle); background: var(--bg-elevated); transition: all var(--transition); position: relative; overflow: hidden; }
.tier-card::after { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; }
.tier-1::after { background: var(--gradient-primary); }
.tier-2::after { background: var(--gradient-gold); }
.tier-3::after { background: linear-gradient(90deg, var(--ink-400), var(--ink-500)); }
.tier-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--border-orange); }
.tier-number { font-size: 56px; font-weight: 700; line-height: 1; margin-bottom: 6px; letter-spacing: -2px; }
.tier-1 .tier-number { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.tier-2 .tier-number { color: var(--gold-500); }
.tier-3 .tier-number { color: var(--ink-300); }
.tier-card h3 { font-size: 17px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.tier-card p { font-size: 13px; color: var(--text-tertiary); }

.community-cta { text-align: center; padding: 28px; background: rgba(255, 109, 0, 0.06); border: 1px solid rgba(255, 109, 0, 0.12); border-radius: var(--radius-xl); margin-bottom: 40px; }
.community-cta p { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }

.logo-wall { overflow: hidden; position: relative; padding: 16px 0; }
.logo-wall::before, .logo-wall::after { display: none; }
.logo-wall-track { display: flex; gap: 12px; animation: scrollLogo 35s linear infinite; width: max-content; }
@keyframes scrollLogo { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.logo-item { display: inline-flex; align-items: center; justify-content: center; padding: 8px 22px; background: var(--bg-elevated); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); font-size: 13px; font-weight: 500; color: var(--text-tertiary); white-space: nowrap; transition: all var(--transition-fast); }
.logo-item:hover { border-color: var(--border-orange); color: var(--orange-400); }

/* ===== Testimonials ===== */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.testimonial-card { padding: 28px; border-radius: var(--radius-lg); border: 1px solid var(--border-subtle); background: var(--bg-elevated); transition: all var(--transition); }
.testimonial-card:hover { border-color: var(--border-orange); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.testimonial-meta { font-size: 11px; color: var(--gold-500); font-weight: 600; margin-bottom: 8px; letter-spacing: 1px; text-transform: uppercase; }
.testimonial-text { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== News ===== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-card { background: var(--bg-elevated); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-subtle); transition: all var(--transition); display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--border-medium); }
.news-card-img { height: 180px; background: var(--bg-card); display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative; }
.news-card-img-policy { background: linear-gradient(135deg, #FF6D00 0%, #E06000 50%, #CC5500 100%); }
.news-card-img-industry { background: linear-gradient(135deg, #E06000 0%, #CC5500 50%, #B84400 100%); }
.news-card-img-jiansi { background: linear-gradient(135deg, #FF8533 0%, #FF6D00 50%, #E06000 100%); }

.news-card-img-shape { position: absolute; border-radius: 50%; }
.news-card-img-shape-1 { width: 120px; height: 120px; background: rgba(255,255,255,0.08); top: -30px; right: -20px; }
.news-card-img-shape-2 { width: 80px; height: 80px; background: rgba(255,255,255,0.06); bottom: -15px; left: -10px; }
.news-card-img-shape-3 { width: 50px; height: 50px; background: rgba(255,255,255,0.05); top: 50%; left: 50%; transform: translate(-50%, -50%); }

.news-card-img-accent { position: absolute; width: 4px; height: 40px; background: #FFFFFF; border-radius: 2px; }
.news-card-img-accent-1 { top: 24px; left: 24px; }
.news-card-img-accent-2 { top: 24px; left: 34px; height: 40px; width: 4px; }

.news-card-img-line { position: absolute; width: 60px; height: 2px; background: rgba(255,255,255,0.15); }
.news-card-img-line-1 { top: 80px; right: 24px; transform: rotate(-45deg); }
.news-card-img-line-2 { top: 100px; right: 24px; width: 40px; transform: rotate(-45deg); }

.news-card-img-label { position: absolute; bottom: 20px; left: 24px; }
.news-card-img-label .num { font-size: 36px; font-weight: 700; color: #FFFFFF; line-height: 1; letter-spacing: -1px; font-family: var(--font-mono); }
.news-card-img-label .title { font-size: 13px; color: #FFFFFF; font-weight: 600; letter-spacing: 3px; }
.news-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.news-tag { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; background: var(--orange-500); color: white; border-radius: var(--radius-full); font-size: 11px; font-weight: 600; margin-bottom: 10px; width: fit-content; letter-spacing: 0.5px; }
.news-tag::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: rgba(255,255,255,0.6); flex-shrink: 0; }
.news-card-body h4 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; line-height: 1.4; }
.news-card-body p { font-size: 13px; color: var(--text-tertiary); margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.news-link { font-size: 13px; color: var(--orange-400); font-weight: 500; display: inline-flex; align-items: center; gap: 4px; }
.news-link:hover { color: var(--orange-500); gap: 6px; }
.news-link-arrow { transition: transform var(--transition-fast); }
.news-link:hover .news-link-arrow { transform: translateX(3px); }

/* ===== Bottom CTA ===== */
.cta-section { padding: 80px 0; text-align: center; border-top: 1px solid var(--border-subtle); background: var(--bg-surface); }

/* ===== Footer ===== */
.footer { background: #1A1A1C; border-top: 1px solid var(--border-subtle); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.8fr 1.2fr 1fr 1fr; gap: 32px; padding-bottom: 48px; }
.footer-brand-mark { width: 36px; height: 36px; border-radius: var(--radius-sm); background: var(--gradient-primary); display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 700; color: white; font-family: var(--font-serif); margin-bottom: 12px; }
.footer-brand { display: flex; flex-direction: column; }
.footer-company { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.footer-tagline { font-size: 13px; color: var(--text-tertiary); margin-bottom: 8px; line-height: 1.6; }
.footer-slogan { color: #FF6D00 !important; font-weight: 500; font-size: 14px !important; margin-bottom: 20px; }
.footer-social { display: flex; gap: 8px; }
.footer-social-item { font-size: 12px; color: var(--text-secondary); padding: 4px 12px; border: 1px solid var(--border-subtle); border-radius: var(--radius-full); transition: all var(--transition-fast); cursor: pointer; }
.footer-social-item:hover { border-color: var(--border-orange); color: var(--orange-400); }
.footer-links-list { display: flex; flex-direction: column; gap: 8px; padding-top: 0; }
.footer-links-list li { margin-bottom: 0; }
.footer-links-list a { font-size: 14px; color: var(--text-secondary); position: relative; padding-left: 0; transition: all var(--transition-fast); display: inline-block; }
.footer-links-list a:hover { color: var(--orange-400); padding-left: 4px; }
.footer-contact { display: flex; flex-direction: column; gap: 10px; }
.footer-contact-item { font-size: 14px; color: var(--text-secondary); display: flex; align-items: center; gap: 8px; }
.footer-contact-icon { font-size: 14px; opacity: 0.5; }
.footer-qr-col { display: flex; flex-direction: column; align-items: center; text-align: center; }
.footer-qr-img { width: 110px; height: 110px; border-radius: var(--radius-md); object-fit: cover; border: 1px solid var(--border-subtle); margin-bottom: 10px; }
.footer-qr-label { font-size: 14px; color: var(--text-secondary); margin-bottom: 2px; font-weight: 500; }
.footer-qr-sub { font-size: 12px; color: var(--text-tertiary); }
.footer-bottom { border-top: 1px solid var(--border-subtle); padding: 20px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.footer-bottom p { font-size: 12px; color: var(--text-tertiary); }
.footer-highlight { color: var(--orange-400); font-weight: 500; }

/* ===== Reveal ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .stats-grid, .quick-grid { grid-template-columns: repeat(2, 1fr); }
    .philosophy-grid { grid-template-columns: 1fr; gap: 40px; }
    .engine-grid { grid-template-columns: 1fr; }
    .community-tiers { grid-template-columns: repeat(3, 1fr); }
    .testimonial-grid, .news-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .hexagon-wrapper { flex-direction: column; gap: 36px; }
}
@media (max-width: 768px) {
    .nav-links { display: none; position: absolute; top: 68px; left: 0; width: 100%; flex-direction: column; background: var(--bg-deep); backdrop-filter: blur(20px); padding: 12px 16px; gap: 2px; border-bottom: 1px solid var(--border-subtle); box-shadow: var(--shadow-md); }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 10px 16px; border-radius: var(--radius-md); }
    .nav-cta { margin-top: 8px; }
    .nav-toggle { display: block; }
    .stats-grid, .quick-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .stat-card { padding: 20px 12px; }
    .stat-number { font-size: 36px; }
    .community-tiers, .testimonial-grid, .news-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .section { padding: 56px 0; }
    .section-header { margin-bottom: 32px; }
    .philosophy-virtues { grid-template-columns: 1fr; }
    .engine-card { padding: 28px 20px; }
    .hex-detail { padding: 20px; min-width: auto; }
}