/* ===== 品驭引擎AI体系DAO — 公共样式 ===== */
:root {
    --cyan-50: #ecfeff; --cyan-100: #cffafe; --cyan-200: #a5f3fc; --cyan-300: #67e8f9;
    --cyan-400: #22d3ee; --cyan-500: #06b6d4; --cyan-600: #0891b2; --cyan-700: #0e7490;
    --cyan-800: #155e75; --cyan-900: #164e63; --cyan-950: #083344;
    --teal-500: #14b8a6; --teal-600: #0d9488; --teal-700: #0f766e;
    --gray-50: #f9fafb; --gray-100: #f3f4f6; --gray-200: #e5e7eb; --gray-300: #d1d5db;
    --gray-400: #9ca3af; --gray-500: #6b7280; --gray-600: #4b5563; --gray-700: #374151;
    --gray-800: #1f2937; --gray-900: #111827; --gray-950: #030712;
    --gradient-hero: linear-gradient(135deg, #022c34 0%, #0e7490 40%, #0d9488 70%, #083344 100%);
    --gradient-cta: linear-gradient(135deg, var(--cyan-500) 0%, var(--teal-500) 100%);
    --gradient-glow: radial-gradient(ellipse 60% 60% at 50% 0%, rgba(6,182,212,0.25) 0%, transparent 70%);
    --gradient-card: linear-gradient(135deg, rgba(6,182,212,0.06) 0%, rgba(13,148,136,0.10) 100%);
    --accent: var(--cyan-500); --accent-hover: var(--cyan-600); --accent-deep: var(--cyan-700); --accent-soft: var(--cyan-50);
    --font-sans: "SF Pro Display","SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
    --font-mono: "SF Mono","Fira Code","Fira Mono","Roboto Mono",monospace;
    --max-width: 1200px; --max-width-narrow: 860px;
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 20px; --radius-xl: 28px; --radius-2xl: 36px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04); --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.08); --shadow-xl: 0 24px 64px rgba(0,0,0,0.12);
    --shadow-glow: 0 0 60px rgba(6,182,212,0.15); --shadow-cyan: 0 4px 20px rgba(6,182,212,0.25);
    --ease-out-expo: cubic-bezier(0.16,1,0.3,1); --ease-out-back: cubic-bezier(0.34,1.56,0.64,1);
    --duration-fast: 200ms; --duration-base: 400ms; --duration-slow: 800ms;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font-sans);font-size:16px;line-height:1.6;color:var(--gray-900);background:#fff;overflow-x:hidden}
a{text-decoration:none;color:inherit}ul{list-style:none}img{max-width:100%;height:auto;display:block}
::selection{background:rgba(6,182,212,0.25);color:var(--cyan-900)}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.container-narrow{max-width:var(--max-width-narrow);margin:0 auto;padding:0 24px}
.section{padding:120px 24px;position:relative}
.section-dark{background:var(--gray-900);color:#fff}
.section-gray{background:var(--gray-50)}
.section-label{font-size:0.82rem;font-weight:600;letter-spacing:0.06em;text-transform:uppercase;color:var(--accent);margin-bottom:16px;display:inline-block}
.section-dark .section-label{color:var(--cyan-400)}
.section-title{font-size:clamp(2rem,4vw,3rem);font-weight:700;letter-spacing:-0.025em;line-height:1.2;margin-bottom:20px;color:var(--gray-900)}
.section-dark .section-title{color:#fff}
.section-desc{font-size:1.08rem;color:var(--gray-600);max-width:680px;margin-bottom:56px;line-height:1.7}
.section-dark .section-desc{color:var(--gray-300)}
.section-head-center{text-align:center}
.section-head-center .section-desc{margin-left:auto;margin-right:auto}

.reveal{opacity:0;transform:translateY(32px);transition:opacity var(--duration-slow) var(--ease-out-expo),transform var(--duration-slow) var(--ease-out-expo)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:100ms}.reveal-delay-2{transition-delay:200ms}.reveal-delay-3{transition-delay:300ms}.reveal-delay-4{transition-delay:400ms}

/* ===== Nav ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:14px 0;transition:all var(--duration-base) var(--ease-out-expo);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);background:rgba(255,255,255,0.72);border-bottom:1px solid transparent}
.nav.scrolled{padding:8px 0;background:rgba(255,255,255,0.88);border-bottom:1px solid rgba(0,0,0,0.06);box-shadow:var(--shadow-sm)}
.nav-inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem;color:var(--gray-900);letter-spacing:-0.02em}
.nav-logo .logo-mark{width:36px;height:36px;border-radius:10px;background:var(--gradient-cta);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.nav-logo .logo-mark svg{width:22px;height:22px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:0.85rem;font-weight:500;color:var(--gray-700);letter-spacing:-0.01em;position:relative;padding:4px 0;transition:color var(--duration-fast)}
.nav-links a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--accent);border-radius:2px;transition:width var(--duration-base) var(--ease-out-expo)}
.nav-links a:hover,.nav-links a.active{color:var(--accent)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}

.nav-dropdown{position:relative}
.nav-dropdown>a{display:flex;align-items:center;gap:4px}
.nav-dropdown>a svg{width:12px;height:12px;transition:transform var(--duration-fast)}
.nav-dropdown:hover>a svg{transform:rotate(180deg)}
.nav-dropdown-menu{position:absolute;top:100%;left:-16px;margin-top:12px;background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:8px 0;min-width:200px;opacity:0;visibility:hidden;transform:translateY(8px);transition:all var(--duration-base) var(--ease-out-expo)}
.nav-dropdown:hover .nav-dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-dropdown-menu a{display:block;padding:8px 20px;font-size:0.82rem;white-space:nowrap}
.nav-dropdown-menu a:hover{background:var(--accent-soft);color:var(--accent-deep)}
.nav-dropdown-menu a::after{display:none}

.nav-cta{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;background:var(--gradient-cta);color:#fff;border:none;border-radius:20px;font-family:var(--font-sans);font-size:0.82rem;font-weight:600;cursor:pointer;text-decoration:none;transition:all var(--duration-base) var(--ease-out-expo);box-shadow:0 2px 8px rgba(6,182,212,0.25);white-space:nowrap}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(6,182,212,0.35);color:#fff}
.nav-cta.desktop{margin-left:8px}

.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;z-index:1001;background:none;border:none}
.hamburger span{display:block;width:22px;height:2px;background:var(--gray-900);border-radius:2px;transition:all var(--duration-base) var(--ease-out-expo);transform-origin:center}
.hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.open span:nth-child(2){opacity:0;transform:scaleX(0)}
.hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.mobile-menu{display:none;position:fixed;inset:0;z-index:999;background:rgba(255,255,255,0.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);flex-direction:column;align-items:center;justify-content:flex-start;padding:100px 24px 40px;gap:16px;overflow-y:auto}
.mobile-menu.open{display:flex}
.mobile-menu a{font-size:1.05rem;font-weight:600;color:var(--gray-900);letter-spacing:-0.02em;transition:color var(--duration-fast)}
.mobile-menu a:hover{color:var(--accent)}
.mobile-menu .mobile-sub{font-size:0.9rem;font-weight:500;color:var(--gray-500)}
.mobile-menu .nav-cta{margin-top:12px}

/* ===== Hero ===== */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--gradient-hero);position:relative;overflow:hidden;padding:120px 24px 80px}
.hero-grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,0.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.03) 1px,transparent 1px);background-size:60px 60px;mask-image:radial-gradient(ellipse 80% 80% at 50% 0%,black 30%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse 80% 80% at 50% 0%,black 30%,transparent 70%)}
.hero-glow{position:absolute;width:700px;height:500px;background:var(--gradient-glow);top:-10%;left:50%;transform:translateX(-50%);pointer-events:none;filter:blur(60px)}
.hero-particles{position:absolute;inset:0;pointer-events:none}
.hero-particle{position:absolute;border-radius:50%;background:var(--cyan-300);opacity:0;animation:floatUp linear infinite}
@keyframes floatUp{0%{opacity:0;transform:translateY(100vh) scale(0)}10%{opacity:0.6}90%{opacity:0.2}100%{opacity:0;transform:translateY(-10vh) scale(1.2)}}
.hero-content{position:relative;z-index:2;text-align:center;max-width:820px;margin:0 auto}
.hero-badge{display:inline-block;padding:8px 20px;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.2);border-radius:20px;color:var(--cyan-200);font-size:0.82rem;font-weight:600;letter-spacing:0.04em;margin-bottom:28px;backdrop-filter:blur(10px)}
.hero h1{font-size:clamp(2.6rem,6vw,4.5rem);font-weight:700;letter-spacing:-0.03em;line-height:1.12;color:#fff;margin-bottom:24px}
.hero h1 .highlight{background:linear-gradient(135deg,var(--cyan-300),var(--teal-500));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:1.2rem;color:rgba(255,255,255,0.75);margin-bottom:44px;line-height:1.7;max-width:600px;margin-left:auto;margin-right:auto}
.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* Sub-page hero */
.page-hero{background:var(--gradient-hero);position:relative;overflow:hidden;padding:160px 24px 90px;text-align:center}
.page-hero .hero-grid-bg{mask-image:none;-webkit-mask-image:none}
.page-hero h1{font-size:clamp(2rem,4.5vw,3.2rem);font-weight:700;letter-spacing:-0.025em;color:#fff;margin-bottom:16px}
.page-hero h1 .highlight{background:linear-gradient(135deg,var(--cyan-300),var(--teal-500));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.page-hero .page-sub{font-size:1.1rem;color:rgba(255,255,255,0.72);max-width:640px;margin:0 auto;line-height:1.7}
.breadcrumb{display:inline-flex;align-items:center;gap:8px;font-size:0.8rem;color:rgba(255,255,255,0.55);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,0.75)}
.breadcrumb a:hover{color:#fff}

.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:var(--gradient-cta);color:#fff;font-size:0.95rem;font-weight:600;border-radius:28px;transition:transform var(--duration-fast),box-shadow var(--duration-fast);letter-spacing:-0.01em;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-cyan);color:#fff}
.btn-outline{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:transparent;color:var(--cyan-700);font-size:0.95rem;font-weight:600;border-radius:28px;border:1.5px solid var(--cyan-300);transition:all var(--duration-fast);letter-spacing:-0.01em;cursor:pointer}
.btn-outline:hover{background:var(--accent-soft);border-color:var(--cyan-500)}
.hero .btn-outline,.page-hero .btn-outline,.cta-banner .btn-outline,.section-dark .btn-outline{color:#fff;border-color:rgba(255,255,255,0.35)}
.hero .btn-outline:hover,.page-hero .btn-outline:hover,.cta-banner .btn-outline:hover,.section-dark .btn-outline:hover{background:rgba(255,255,255,0.08);border-color:rgba(255,255,255,0.6)}

.scroll-indicator{position:absolute;bottom:36px;left:50%;transform:translateX(-50%);z-index:2;display:flex;flex-direction:column;align-items:center;gap:8px;color:rgba(255,255,255,0.5);font-size:0.78rem}
.scroll-indicator svg{width:20px;height:20px}

/* ===== Stats ===== */
.stats-section{padding:0 24px;position:relative;z-index:3;margin-top:-40px}
.stats-grid{max-width:var(--max-width);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;background:#fff;border-radius:var(--radius-xl);padding:48px 40px;box-shadow:var(--shadow-lg);border:1px solid var(--gray-100)}
.stat-item{text-align:center}
.stat-value{font-size:clamp(1.8rem,3vw,2.6rem);font-weight:700;color:var(--accent-deep);letter-spacing:-0.03em;line-height:1.2;margin-bottom:8px}
.stat-label{font-size:0.9rem;color:var(--gray-500);font-weight:500}

/* ===== Cards ===== */
.insights-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.insight-card{background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);border-radius:var(--radius-lg);padding:40px 32px;transition:all var(--duration-base) var(--ease-out-expo);position:relative;overflow:hidden}
.insight-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-cta);border-radius:0 0 3px 3px}
.insight-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,0.16);box-shadow:var(--shadow-glow)}
.insight-icon{font-size:2rem;display:block;margin-bottom:16px}
.insight-num{font-size:0.78rem;font-weight:600;letter-spacing:0.06em;color:var(--cyan-400);margin-bottom:10px}
.insight-card h3{font-size:1.2rem;font-weight:600;letter-spacing:-0.02em;margin-bottom:10px;color:#fff}
.insight-card p{font-size:0.9rem;color:var(--gray-300);line-height:1.65}

.features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:24px}
.feature-card{background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius-lg);padding:40px 36px;transition:all var(--duration-base) var(--ease-out-expo);position:relative}
.feature-card:hover{transform:translateY(-4px);border-color:var(--cyan-200);box-shadow:var(--shadow-md),var(--shadow-glow);background:var(--gradient-card)}
.feature-num{font-size:3rem;font-weight:700;color:var(--cyan-100);letter-spacing:-0.04em;line-height:1;margin-bottom:12px}
.feature-tag{display:inline-block;padding:4px 14px;background:var(--cyan-50);color:var(--cyan-700);font-size:0.78rem;font-weight:600;border-radius:12px;letter-spacing:0.03em;margin-bottom:16px}
.feature-card h3{font-size:1.2rem;font-weight:600;letter-spacing:-0.02em;margin-bottom:10px;color:var(--gray-900)}
.feature-card p{font-size:0.9rem;color:var(--gray-600);line-height:1.65}
.feature-link{margin-top:12px;display:inline-block;font-size:0.85rem;color:var(--accent);font-weight:600}
.feature-link:hover{color:var(--accent-deep)}

.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:24px}
.pain-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:36px 28px;text-align:center;transition:all var(--duration-base) var(--ease-out-expo)}
.pain-card:hover{transform:translateY(-4px);border-color:var(--cyan-300);box-shadow:var(--shadow-md)}
.pain-emoji{font-size:2.4rem;display:block;margin-bottom:16px}
.pain-card h3{font-size:1.05rem;font-weight:600;letter-spacing:-0.02em;margin-bottom:8px;color:var(--gray-900)}
.pain-card p{font-size:0.85rem;color:var(--gray-500);line-height:1.55}

.solution-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:24px}
.solution-card{background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);border-radius:var(--radius-xl);padding:40px 36px;transition:all var(--duration-base) var(--ease-out-expo);display:flex;gap:24px;align-items:flex-start}
.solution-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,0.18);box-shadow:var(--shadow-glow);background:rgba(255,255,255,0.06)}
.solution-num{flex-shrink:0;width:52px;height:52px;border-radius:16px;background:var(--gradient-cta);display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;color:#fff}
.solution-text h3{font-size:1.15rem;font-weight:600;letter-spacing:-0.02em;color:#fff;margin-bottom:8px}
.solution-text p{font-size:0.88rem;color:var(--gray-300);line-height:1.6}
/* 浅色背景下的 solution 样式 */
.section:not(.section-dark):not(.section-gray) .solution-card{background:#fff;border-color:var(--gray-100)}
.section:not(.section-dark):not(.section-gray) .solution-card:hover{border-color:var(--cyan-200);box-shadow:var(--shadow-md)}
.section:not(.section-dark):not(.section-gray) .solution-text h3{color:var(--gray-900)}
.section:not(.section-dark):not(.section-gray) .solution-text p{color:var(--gray-600)}

.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:24px}
.topic-card{background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;transition:all var(--duration-base) var(--ease-out-expo)}
.topic-card:hover{transform:translateY(-4px);border-color:var(--cyan-300);box-shadow:var(--shadow-md),var(--shadow-glow);background:var(--gradient-card)}
.topic-icon{font-size:2.2rem;display:block;margin-bottom:14px}
.topic-card h4{font-size:1rem;font-weight:600;letter-spacing:-0.02em;color:var(--gray-900);margin-bottom:6px}
.topic-card span{font-size:0.8rem;color:var(--accent);font-weight:500}

/* ===== Article / Prose ===== */
.prose{max-width:var(--max-width-narrow);margin:0 auto}
.prose h3{font-size:1.35rem;font-weight:700;letter-spacing:-0.02em;color:var(--gray-900);margin:48px 0 16px;padding-left:16px;border-left:4px solid var(--accent)}
.section-dark .prose h3{color:#fff}
.prose p{font-size:1rem;color:var(--gray-600);line-height:1.85;margin-bottom:16px}
.section-dark .prose p{color:var(--gray-300)}
.prose strong{color:var(--gray-900)}
.section-dark .prose strong{color:#fff}
.prose ul.dot-list{margin:0 0 20px}
.prose ul.dot-list li{position:relative;padding:6px 0 6px 24px;font-size:0.96rem;color:var(--gray-600);line-height:1.7}
.prose ul.dot-list li::before{content:'';position:absolute;left:2px;top:15px;width:8px;height:8px;border-radius:50%;background:var(--gradient-cta)}

/* 对比表 */
.compare-wrap{overflow-x:auto;margin:32px 0;border-radius:var(--radius-lg);border:1px solid var(--gray-200);box-shadow:var(--shadow-md)}
.compare-table{width:100%;border-collapse:collapse;background:#fff;min-width:640px;font-size:0.9rem}
.compare-table th{background:var(--gray-900);color:#fff;padding:14px 18px;text-align:left;font-weight:600;white-space:nowrap}
.compare-table th:first-child{background:var(--gray-800)}
.compare-table td{padding:13px 18px;border-bottom:1px solid var(--gray-100);color:var(--gray-600);vertical-align:top;line-height:1.6}
.compare-table tr:last-child td{border-bottom:none}
.compare-table td:first-child{font-weight:600;color:var(--gray-800);white-space:nowrap}
.compare-table tr:hover td{background:var(--cyan-50)}

/* 提示框 */
.info-banner{display:flex;gap:16px;align-items:flex-start;background:var(--gradient-card);border:1px solid var(--cyan-200);border-radius:var(--radius-lg);padding:24px 28px;margin:32px 0}
.info-banner .info-icon{font-size:1.5rem;flex-shrink:0}
.info-banner h4{font-size:0.95rem;font-weight:700;color:var(--accent-deep);margin-bottom:4px}
.info-banner p{font-size:0.88rem;color:var(--gray-600);line-height:1.65;margin:0}

/* 流程步骤 */
.step-flow{display:flex;align-items:stretch;gap:0;flex-wrap:wrap;margin:32px 0}
.step-item{flex:1;min-width:160px;text-align:center;position:relative;padding:28px 16px;background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius-md);margin:8px}
.step-item .step-badge{width:40px;height:40px;margin:0 auto 12px;border-radius:50%;background:var(--gradient-cta);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem}
.step-item h4{font-size:0.95rem;font-weight:600;color:var(--gray-900);margin-bottom:6px}
.step-item p{font-size:0.8rem;color:var(--gray-500);line-height:1.55}
.step-arrow{display:flex;align-items:center;color:var(--cyan-300);font-size:1.4rem;font-weight:700}

/* ===== CTA Banner ===== */
.cta-banner{background:var(--gradient-hero);border-radius:var(--radius-2xl);padding:80px 64px;text-align:center;position:relative;overflow:hidden;margin:0 24px;max-width:var(--max-width);margin-left:auto;margin-right:auto}
.cta-banner::before{content:'';position:absolute;inset:0;background:var(--gradient-glow);pointer-events:none}
.cta-banner>*{position:relative;z-index:1}
.cta-banner h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:700;letter-spacing:-0.025em;color:#fff;margin-bottom:16px}
.cta-banner p{font-size:1.08rem;color:rgba(255,255,255,0.7);margin-bottom:36px;max-width:560px;margin-left:auto;margin-right:auto}
.cta-banner .btn-primary{font-size:1.05rem;padding:16px 40px}

/* ===== Footer ===== */
.footer{background:var(--gray-950);color:var(--gray-400);padding:80px 24px 40px}
.footer-grid{max-width:var(--max-width);margin:0 auto 48px;display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:48px}
.footer-brand p{margin-top:16px;font-size:0.88rem;line-height:1.6;color:var(--gray-500)}
.footer-brand .nav-logo{color:#fff}
.footer-col h4{font-size:0.85rem;font-weight:600;color:#fff;letter-spacing:0.02em;margin-bottom:20px}
.footer-col a{display:block;font-size:0.85rem;color:var(--gray-500);margin-bottom:10px;transition:color var(--duration-fast)}
.footer-col a:hover{color:var(--cyan-400)}
.footer-bottom{max-width:var(--max-width);margin:0 auto;padding-top:28px;border-top:1px solid rgba(255,255,255,0.06);text-align:center;font-size:0.8rem;color:var(--gray-600)}

/* Trust Bar */
.trust-bar{padding:48px 24px;background:var(--gray-50);border-top:1px solid var(--gray-100);border-bottom:1px solid var(--gray-100)}
.trust-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:center;gap:56px;flex-wrap:wrap}
.trust-item{font-size:0.9rem;font-weight:500;color:var(--gray-400);letter-spacing:0.02em;display:flex;align-items:center;gap:8px}
.trust-dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}

/* 上下页导航 */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px}
.pager a{background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius-lg);padding:24px 28px;transition:all var(--duration-base) var(--ease-out-expo);display:block}
.pager a:hover{border-color:var(--cyan-300);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.pager .pager-label{font-size:0.75rem;color:var(--gray-400);margin-bottom:6px}
.pager .pager-title{font-size:1rem;font-weight:600;color:var(--gray-900)}
.pager .pager-next{text-align:right}

/* ===== Responsive ===== */
@media(max-width:1024px){
    .insights-grid{grid-template-columns:repeat(2,1fr)}
    .pain-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:repeat(2,1fr)}
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .topic-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
    .nav-links,.nav-cta.desktop{display:none}
    .hamburger{display:flex}
    .section{padding:80px 20px}
    .hero{padding:100px 20px 64px;min-height:90vh}
    .hero h1{font-size:clamp(2rem,7vw,2.8rem)}
    .hero-subtitle{font-size:1rem}
    .page-hero{padding:130px 20px 70px}
    .insights-grid,.features-grid,.solution-grid{grid-template-columns:1fr}
    .pain-grid,.topic-grid{grid-template-columns:1fr}
    .stats-grid{grid-template-columns:repeat(2,1fr);padding:32px 24px}
    .stats-section{margin-top:-28px}
    .cta-banner{padding:56px 32px}
    .footer-grid{grid-template-columns:1fr;gap:32px}
    .hero-buttons{flex-direction:column;align-items:center}
    .btn-primary,.btn-outline{width:100%;justify-content:center;max-width:300px}
    .trust-inner{gap:28px}
    .solution-card{flex-direction:column;gap:16px}
    .pager{grid-template-columns:1fr}
    .pager .pager-next{text-align:left}
}
@media(max-width:480px){
    .hero h1{font-size:1.9rem}
    .section-title{font-size:1.6rem}
    .stats-grid{grid-template-columns:1fr 1fr;gap:16px;padding:24px 20px}
    .cta-banner{padding:48px 24px;border-radius:var(--radius-xl)}
    .feature-card,.solution-card,.insight-card,.pain-card{padding:28px 22px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important}}