/* =============================================
   红心结宣传组识别标识站
   样式体系 v3 — 高级感 · 功能性 · 人性化
   品牌色 #F8364F（红）+ 白底 | 框架色 #6900DA（紫）
   ============================================= */

/* ---- 变量系统 ---- */
:root {
  --brand-red: #F8364F;
  --brand-red-dark: #D42440;
  --brand-red-light: #FF5A72;
  --brand-red-ultra: #FFF0F2;
  --primary: #6900DA;
  --primary-light: #8B2EE6;
  --primary-dark: #4D00A0;
  --primary-ultra: #F3E8FF;
  --accent-gold: #E6A700;
  --accent-green: #009B5C;
  --accent-blue: #2563EB;
  --white: #FFFFFF;
  --black: #1A1A1A;
  --gray-50: #FAFAFA;
  --gray-100: #F5F5F5;
  --gray-200: #EEEEEE;
  --gray-300: #E0E0E0;
  --gray-400: #BDBDBD;
  --gray-500: #9E9E9E;
  --gray-600: #757575;
  --gray-800: #424242;
  --gray-900: #3E3E3E;
  --font-cn: 'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --font-en: 'Inter','-apple-system','Helvetica Neue',Arial,sans-serif;
  --font-mono: 'JetBrains Mono','SF Mono',monospace;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-sm: 0 2px 10px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.10);
  --shadow-xl: 0 32px 64px rgba(0,0,0,0.14);
  --shadow-brand: 0 8px 32px rgba(248,54,79,0.15);
  --shadow-purple: 0 8px 32px rgba(105,0,218,0.15);
  --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ---- 重置 ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%;scrollbar-width:thin;scrollbar-color:var(--gray-300) transparent;-webkit-tap-highlight-color:transparent;}
body{font-family:var(--font-cn);color:var(--gray-900);background:var(--white);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;touch-action:pan-y;}

img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;-webkit-tap-highlight-color:transparent;}
ul,ol{list-style:none;}

/* ---- 排版 ---- */
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;letter-spacing:-0.02em;color:var(--black);}
p{line-height:1.75;}

/* ---- 导航栏 ---- */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:60px;
  display:flex;align-items:center;padding:0 28px;
  background:rgba(255,255,255,0.88);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(0,0,0,0.05);transition:var(--transition);
  padding-top:max(28px, env(safe-area-inset-top));
  height:calc(60px + env(safe-area-inset-top));
}
.navbar.scrolled{background:rgba(255,255,255,0.96);box-shadow:0 1px 12px rgba(0,0,0,0.05);}
.navbar-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:0.92rem;color:var(--primary);flex-shrink:0;margin-right:auto;}
.navbar-brand img{width:28px;height:28px;object-fit:contain;border-radius:7px;}
.navbar-brand .brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-size:0.9rem;font-weight:700;color:var(--black);}
.brand-sub{font-size:0.62rem;font-weight:400;color:var(--gray-500);letter-spacing:0.06em;text-transform:uppercase;}
.navbar-nav{display:flex;align-items:center;gap:2px;}
.navbar-nav a{
  padding:8px 16px;border-radius:8px;font-size:0.87rem;font-weight:500;color:var(--gray-600);
  transition:var(--transition-fast);position:relative;
}
.navbar-nav a::after{
  content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%) scaleX(0);
  width:16px;height:2px;background:var(--primary);border-radius:1px;
  transition:transform 0.3s ease;
}
.navbar-nav a:hover,.navbar-nav a.active{color:var(--primary);}
.navbar-nav a:hover::after,.navbar-nav a.active::after{transform:translateX(-50%) scaleX(1);}

.navbar-hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;border-radius:8px;background:none;border:none;margin-left:auto;}
.navbar-hamburger span{display:block;width:20px;height:2px;background:var(--primary);border-radius:2px;transition:all 0.3s ease;}

.mobile-menu{display:none;position:fixed;top:60px;left:0;right:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(20px);border-bottom:1px solid var(--gray-200);padding:10px 24px 18px;z-index:999;flex-direction:column;gap:3px;box-shadow:var(--shadow-md);top:calc(60px + env(safe-area-inset-top));}
.mobile-menu.open{display:flex;}
.mobile-menu a{padding:11px 16px;border-radius:10px;font-size:0.95rem;font-weight:500;color:var(--gray-800);transition:var(--transition-fast);border-left:3px solid transparent;}
.mobile-menu a:hover,.mobile-menu a.active{background:var(--primary-ultra);color:var(--primary);border-left-color:var(--primary);}

/* ---- 容器 ---- */
.container{max-width:1160px;margin:0 auto;padding:0 28px;}
.container-narrow{max-width:780px;margin:0 auto;padding:0 28px;}

/* ---- 章节 ---- */
.section{padding:72px 0;}
.section-sm{padding:48px 0;}
.section-xs{padding:28px 0;}
.section-header{text-align:center;margin-bottom:48px;}

.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:0.72rem;font-weight:600;letter-spacing:0.18em;text-transform:uppercase;color:var(--primary);
  background:var(--primary-ultra);padding:5px 16px;border-radius:100px;margin-bottom:16px;
}

.section-title{font-size:clamp(1.5rem,2.8vw,2.4rem);font-weight:800;color:var(--black);margin-bottom:14px;letter-spacing:-0.03em;}
.section-desc{font-size:1rem;color:var(--gray-600);max-width:520px;margin:0 auto;line-height:1.8;}

/* ---- 按钮 ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:100px;font-size:0.9rem;font-weight:600;cursor:pointer;
  border:none;transition:var(--transition);font-family:var(--font-cn);white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--brand-red),var(--brand-red-light));color:#fff;box-shadow:var(--shadow-brand);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 36px rgba(248,54,79,0.3);}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid rgba(105,0,218,0.3);}
.btn-outline:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-2px);}
.btn-white{background:var(--white);color:var(--primary);box-shadow:var(--shadow-md);}
.btn-white:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.btn-sm{padding:8px 20px;font-size:0.82rem;}
.btn-lg{padding:16px 34px;font-size:1rem;}
.btn-ghost{background:transparent;color:var(--brand-red);padding:8px 0;font-size:0.88rem;font-weight:600;}
.btn-ghost:hover{opacity:0.7;}

/* ---- 卡片系统 ---- */
.card{
  background:var(--white);border-radius:var(--radius-lg);padding:28px;
  box-shadow:var(--shadow-xs);border:1px solid var(--gray-200);transition:var(--transition);
}
.card:hover{box-shadow:var(--shadow-sm);transform:translateY(-3px);}
.card-purple{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;border:none;}
.card-light{background:var(--primary-ultra);border-color:rgba(105,0,218,0.12);}
.card-elevated{box-shadow:var(--shadow-xs);border:1px solid rgba(0,0,0,0.04);transition:all 0.4s cubic-bezier(0.22,1,0.36,1);}
.card-elevated:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px) scale(1.01);}

/* ---- 标签 ---- */
.tag{display:inline-flex;align-items:center;padding:4px 12px;border-radius:100px;font-size:0.74rem;font-weight:600;letter-spacing:0.03em;}
.tag-primary{background:var(--primary-ultra);color:var(--primary);}
.tag-red{background:var(--brand-red-ultra);color:var(--brand-red);}
.tag-white{background:rgba(255,255,255,0.2);color:#fff;}
.tag-outline{background:transparent;border:1px solid var(--gray-300);color:var(--gray-600);}

/* ---- 网格 ---- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}

/* ---- 引用框 & 信息框 ---- */
.quote-box{
  border-left:3px solid var(--brand-red);padding:16px 22px;
  background:var(--brand-red-ultra);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:0.94rem;line-height:1.7;color:var(--gray-900);
}
.info-box{
  padding:16px 20px;background:var(--primary-ultra);border-radius:var(--radius-sm);
  border:1px solid rgba(105,0,218,0.1);font-size:0.87rem;line-height:1.7;color:var(--gray-700);
}

/* ---- 数据表格 ---- */
.data-table{width:100%;border-collapse:collapse;font-size:0.86rem;}
.data-table th{text-align:left;padding:10px 12px;font-weight:600;font-size:0.78rem;color:var(--gray-500);text-transform:uppercase;letter-spacing:0.05em;border-bottom:2px solid var(--gray-200);}
.data-table td{padding:11px 12px;border-bottom:1px solid var(--gray-100);color:var(--gray-700);}
.data-table tr:last-child td{border-bottom:none;}
.data-table tr:hover td{background:var(--gray-50);}

/* ---- 徽章 ---- */
.badge{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:var(--primary-ultra);color:var(--primary);font-size:1.2rem;flex-shrink:0;}
.badge-lg{width:56px;height:56px;border-radius:14px;font-size:1.5rem;}
.badge-purple{background:var(--primary);color:#fff;}

/* ---- 色板 ---- */
.color-swatch{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-xs);transition:var(--transition);}
.color-swatch:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);}
.color-swatch-preview{height:110px;display:flex;align-items:flex-end;padding:12px;}
.color-swatch-info{background:var(--white);padding:14px 18px;border-top:1px solid var(--gray-100);}
.color-swatch-info h4{font-size:0.88rem;margin-bottom:4px;}
.color-code{font-family:var(--font-mono);font-size:0.78rem;color:var(--gray-600);background:var(--gray-100);padding:3px 8px;border-radius:4px;display:inline-block;margin-top:4px;cursor:pointer;transition:var(--transition-fast);}
.color-code:hover{background:var(--primary-ultra);color:var(--primary);}

/* ---- Logo展示 ---- */
.logo-display{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;padding:36px;transition:var(--transition);}
.logo-display:hover{border-color:var(--primary-mid);background:var(--primary-ultra);}
.logo-display img{max-height:110px;object-fit:contain;}

/* ---- 进度条 ---- */
.progress-bar{height:5px;background:var(--gray-200);border-radius:100px;overflow:hidden;}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--brand-red),var(--brand-red-light));border-radius:100px;transition:width 1s cubic-bezier(0.4,0,0.2,1);}

/* ===== 首页专属高级效果 ===== */

/* 渐变文字 */
.gradient-text{
  background:linear-gradient(135deg,var(--brand-red),#FF6B81,var(--brand-red));
  background-size:200% auto;
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;animation:textShimmer 4s linear infinite;
}
@keyframes textShimmer{to{background-position:200% center;}}

/* 光晕装饰 */
.glow-orb{
  position:absolute;border-radius:50%;filter:blur(80px);opacity:0.5;pointer-events:none;z-index:0;
}
.glow-red{background:radial-gradient(circle,rgba(248,54,79,0.2),transparent 70%);}
.glow-purple{background:radial-gradient(circle,rgba(105,0,218,0.15),transparent 70%);}

/* 数字计数动画 */
.stat-number{font-family:var(--font-en);font-size:clamp(2rem,4vw,3.2rem);font-weight:800;color:var(--black);line-height:1;letter-spacing:-0.03em;}
.stat-label{font-size:0.82rem;color:var(--gray-500);margin-top:6px;font-weight:500;letter-spacing:0.02em;}

/* 时间线 */
.timeline-item{display:flex;gap:20px;position:relative;}
.timeline-dot{flex-shrink:0;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:0.82rem;color:#fff;z-index:2;position:relative;}
.timeline-line-wrapper{flex-shrink:0;width:40px;display:flex;justify-content:center;padding-top:4px;}
.timeline-line{width:2px;min-height:24px;background:linear-gradient(to bottom,rgba(105,0,218,0.25),rgba(105,0,218,0.06));border-radius:1px;}
.timeline-content{flex:1;min-width:0;padding-bottom:12px;}
.timeline-year{font-family:var(--font-en);font-size:1.05rem;font-weight:800;color:var(--brand-red);margin-bottom:2px;}
.timeline-title{font-size:0.95rem;font-weight:700;margin:2px 0 4px;}
.timeline-desc{font-size:0.84rem;color:var(--gray-600);line-height:1.65;}

/* 报道卡片 */
.report-card{
  background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);
  padding:20px 24px;transition:all 0.35s cubic-bezier(0.22,1,0.36,1);
  display:flex;align-items:flex-start;gap:16px;cursor:pointer;text-decoration:none;color:inherit;
  position:relative;overflow:hidden;
}
.report-card::before{
  content:'';position:absolute;left:0;top:0;bottom:0;width:3px;
  transition:var(--transition);border-radius:0 2px 2px 0;
}
.report-card:hover::before{width:4px;}
.report-card:hover{box-shadow:var(--shadow-md);transform:translateX(4px);border-color:transparent;}
.report-card.national::before{background:var(--brand-red);}
.report-card.provincial::before{background:var(--accent-blue);}
.report-card.city::before{background:var(--accent-green);}
.report-card.school::before{background:var(--primary);}
.report-card.media::before{background:var(--accent-gold);}

.report-level{
  padding:3px 10px;border-radius:100px;font-size:0.68rem;font-weight:700;
  letter-spacing:0.04em;text-transform:uppercase;flex-shrink:0;
}
.level-national{background:var(--brand-red-ultra);color:var(--brand-red);}
.level-provincial{background:#EBF5FF;color:var(--accent-blue);}
.level-city{background:#EDFBF4;color:var(--accent-green);}
.level-school{background:var(--primary-ultra);color:var(--primary);}
.level-media{background:#FFF8EC;color:var(--accent-gold);}

.report-body h4{font-size:0.92rem;font-weight:700;line-height:1.45;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.report-body p{font-size:0.8rem;color:var(--gray-500);line-height:1.55;}
.report-meta{display:flex;gap:12px;margin-top:8px;font-size:0.74rem;color:var(--gray-400);flex-wrap:wrap;}

/* 语料卡片 */
.quote-card{
  background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);
  padding:22px 24px;transition:all 0.3s ease;position:relative;
}
.quote-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px);}
.quote-mark{
  position:absolute;top:16px;right:20px;font-family:Georgia,serif;
  font-size:2rem;color:var(--gray-200);line-height:1;
}
.quote-category{
  display:inline-flex;align-items:center;gap:5px;
  font-size:0.68rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;
  margin-bottom:10px;padding:3px 10px;border-radius:100px;
}
.cat-brand{background:var(--brand-red-ultra);color:var(--brand-red);}
.cat-emotion{background:#FEF3EB;color:#C46B20;}
.cat-red{background:#FFECEC;color:#B33A3A;}
.cat-number{background:#EBF5FF;color:var(--accent-blue);}
.cat-action{background:#EDFBF4;color:var(--accent-green);}
.quote-text{font-size:0.92rem;font-weight:600;line-height:1.65;color:var(--gray-800);position:relative;z-index:1;}

/* 标题参考卡 */
.title-card{
  display:flex;align-items:center;gap:14px;
  background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius-sm);
  padding:14px 18px;transition:all 0.25s ease;cursor:default;
}
.title-card:hover{border-color:var(--primary-mid);box-shadow:var(--shadow-xs);}
.title-tag{
  flex-shrink:0;width:36px;height:36px;border-radius:9px;display:flex;
  align-items:center;justify-content:center;font-size:0.72rem;font-weight:700;color:#fff;
}
.title-text{font-size:0.87rem;font-weight:600;color:var(--gray-800);flex:1;}

/* 分割线 */
.divider{height:1px;background:var(--gray-200);margin:36px 0;}
.divider-purple{height:3px;width:48px;background:linear-gradient(90deg,var(--primary),var(--primary-light));border-radius:100px;margin:12px 0 24px;}

/* 工具类 */
.text-center{text-align:center;}
.text-primary{color:var(--primary);}
.text-red{color:var(--brand-red);}
.text-muted{color:var(--gray-600);}
.fw-700{font-weight:700;}
.fw-800{font-weight:800;}
.mt-8{margin-top:8px;} .mt-12{margin-top:12px;} .mt-16{margin-top:16px;}
.mt-24{margin-top:24px;} .mt-32{margin-top:32px;} .mt-48{margin-top:48px;}
.mb-8{margin-bottom:8px;} .mb-12{margin-bottom:12px;} .mb-16{margin-bottom:16px;}
.mb-24{margin-bottom:24px;} .mb-32{margin-bottom:32px;}

.safe-pad-top{padding-top:env(safe-area-inset-top);}
.safe-pad-bottom{padding-bottom:env(safe-area-inset-bottom);}

.anchor-offset{scroll-margin-top:calc(60px + env(safe-area-inset-top));}

/* ---- 动效工具类 ---- */
.fade-up{opacity:0;transform:translateY(24px);transition:opacity 0.7s ease,transform 0.7s cubic-bezier(0.22,1,0.36,1);}
.fade-up.visible{opacity:1;transform:translateY(0);}
.fade-up:nth-child(1){transition-delay:0s;} .fade-up:nth-child(2){transition-delay:0.08s;}
.fade-up:nth-child(3){transition-delay:0.16s;} .fade-up:nth-child(4){transition-delay:0.24s;}
.fade-up:nth-child(5){transition-delay:0.32s;} .fade-up:nth-child(6){transition-delay:0.4s;}
.fade-up:nth-child(7){transition-delay:0.48s;} .fade-up:nth-child(8){transition-delay:0.56s;}
.fade-up:nth-child(n+9){transition-delay:0.6s;}

/* 缩放入场 */
.scale-in{opacity:0;transform:scale(0.95);transition:all 0.6s cubic-bezier(0.22,1,0.36,1);}
.scale-in.visible{opacity:1;transform:scale(1);}

/* 左侧滑入 */
.slide-in-left{opacity:0;transform:translateX(-30px);transition:all 0.6s cubic-bezier(0.22,1,0.36,1);}
.slide-in-left.visible{opacity:1;transform:translateX(0);}

/* 右侧滑入 */
.slide-in-right{opacity:0;transform:translateX(30px);transition:all 0.6s cubic-bezier(0.22,1,0.36,1);}
.slide-in-right.visible{opacity:1;transform:translateX(0);}

/* ---- Toast ---- */
.copy-toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(16px);background:var(--black);color:#fff;padding:9px 22px;border-radius:100px;font-size:0.85rem;opacity:0;pointer-events:none;transition:all 0.3s ease;z-index:9999;white-space:nowrap;}
.copy-toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ---- 页脚 ---- */
.footer{background:var(--black);color:var(--white);padding:56px 0 28px;padding-bottom:calc(28px + env(safe-area-inset-bottom));}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-brand img{width:32px;height:32px;object-fit:contain;border-radius:8px;}
.footer-brand-name{font-size:1rem;font-weight:700;}
.footer-desc{font-size:0.85rem;color:rgba(255,255,255,0.42);line-height:1.8;margin-bottom:20px;}
.footer-col-title{font-size:0.76rem;font-weight:700;letter-spacing:0.12em;text-transform:uppercase;color:rgba(255,255,255,0.3);margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:0.85rem;color:rgba(255,255,255,0.55);transition:var(--transition-fast);}
.footer-links a:hover{color:var(--brand-red-light);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.07);padding-top:20px;display:flex;align-items:center;justify-content:space-between;font-size:0.8rem;color:rgba(255,255,255,0.3);gap:16px;flex-wrap:wrap;}
.footer-bottom a{color:var(--brand-red-light);}

/* ===== 响应式 — 平板 ===== */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
}

/* ===== 响应式 — 手机（768px以下）核心优化 ===== */
@media(max-width:768px){
  /* 导航 */
  .navbar-nav{display:none;} .navbar-hamburger{display:flex;}
  .navbar{padding:0 16px;height:56px;}
  .navbar-brand img{width:26px;height:26px;}
  .mobile-menu{top:56px;padding:10px 16px 16px;}

  /* 触摸反馈 */
  a,button,.card,.nav-card,.report-card,.quote-card,.title-card{
    -webkit-tap-highlight-color:transparent;
    touch-action:manipulation;
  }

  /* 容器与间距 */
  .section{padding:48px 0;} .section-sm{padding:32px 0;}
  .section-header{margin-bottom:32px;}
  .container,.container-narrow{padding:0 16px;}

  /* 网格 */
  .grid-2,.grid-3{grid-template-columns:1fr;}

  /* 卡片 */
  .card{padding:20px 16px;border-radius:14px;}
  .card-elevated{border-radius:14px;}
  .report-card{
    padding:16px 16px;flex-direction:column;gap:10px;border-radius:14px;
    margin-left:0;margin-right:0;
  }
  .timeline-item{gap:14px;}

  /* 页脚 */
  .footer-grid{grid-template-columns:1fr;gap:28px;margin-bottom:32px;}
  .footer{padding:40px 0 20px;}
  .footer-bottom{flex-direction:column;text-align:center;gap:8px;}

  /* 排版缩放 */
  h1,h2{font-size:clamp(1.5rem,5vw,2rem);line-height:1.25;}
  h3{font-size:1.05rem;}
  p{font-size:0.88rem;line-height:1.75;}

  /* 按钮 */
  .btn-lg{padding:13px 26px;font-size:0.9rem;}
  .btn{padding:10px 20px;font-size:0.85rem;}

  /* 数据数字 */
  .stat-number{font-size:1.85rem;}

  /* Logo展示 */
  .logo-display{padding:22px;border-radius:14px;}
  .logo-display img{max-height:80px;}

  /* 色板 */
  .color-swatch-preview{height:90px;padding:10px;}
  .color-swatch-info{padding:11px 14px;}
  .color-swatch-info h4{font-size:0.82rem;}
  .color-code{font-size:0.74rem;}

  /* 语料卡片 */
  .quote-card{padding:18px 16px;border-radius:14px;}
  .quote-text{font-size:0.86rem;}

  /* 引用框/信息框 */
  .quote-box{padding:13px 16px;font-size:0.87rem;border-radius:6px;}
  .info-box{padding:13px 15px;font-size:0.83rem;border-radius:8px;}

  /* 表格 */
  .data-table{font-size:0.82rem;}
  .data-table th{padding:8px 8px;font-size:0.72rem;}
  .data-table td{padding:9px 8px;}

  /* 标题参考卡 */
  .title-card{padding:12px 14px;gap:10px;border-radius:10px;}
  .title-tag{width:32px;height:32px;border-radius:7px;font-size:0.66rem;}
  .title-text{font-size:0.82rem;}

  /* 标签 */
  .tag{font-size:0.7rem;padding:3px 10px;}
  .badge,.badge-lg{display:none;} /* 手机隐藏图标徽章，节省空间 */

  /* 动画降级：减少位移距离 */
  .fade-up{transform:translateY(16px);}

  /* 移动端触摸按下反馈 */
  .nav-card:active,.card:active,.report-card:active,.quote-card:active,
  .stat-glass:active,.btn:active{
    transform:scale(0.97);transition:transform 0.1s ease;
  }

  /* Toast适配小屏 */
  .copy-toast{font-size:0.78rem;padding:8px 18px;max-width:calc(100vw - 40px);left:50%;right:auto;transform-origin:bottom center;}

  /* 分割线 */
  .divider{margin:24px 0;}
}

/* ===== 响应式 — 小屏手机（480px以下）深度优化 ===== */
@media(max-width:480px){
  html{font-size:15px;}
  body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;}

  .navbar{padding:0 12px;height:52px;}
  .navbar-brand img{width:24px;height:24px;}
  .brand-main{font-size:0.84rem;}
  .brand-sub{font-size:0.58rem;}

  .container,.container-narrow{padding:0 14px;}
  .section{padding:36px 0;} .section-sm{padding:26px 0;}

  /* 首页专属移动优化 */
  .home-body .hero{padding:48px 0 36px;}
  .hero-title{font-size:1.65rem;letter-spacing:-0.03em;margin-bottom:16px;}
  .hero-subtitle{font-size:0.86rem;margin-bottom:26px;line-height:1.75;}
  .hero-badge{font-size:0.66rem;padding:5px 14px;border-radius:100px;}
  .hero-actions{flex-direction:column;width:100%;}
  .hero-actions a.btn{text-align:center;justify-content:center;width:100%;box-sizing:border-box;}

  .hero-logo-glass{width:160px;height:160px;border-radius:20px;}
  .hero-logo-glass img{width:80px;height:80px;}

  /* 口号区 */
  .slogan-bar{padding:30px 0;}
  .slogan-text{font-size:1.15rem;letter-spacing:0.04em;}
  .slogan-sub{font-size:0.68rem;}

  /* 导航卡片 */
  .nav-cards{gap:14px;}
  .nav-card{padding:24px 20px;border-radius:16px;}
  .nav-num{font-size:1.8rem;}
  .nav-icon{width:40px;height:40px;border-radius:11px;}
  .nav-card h3{font-size:1rem;margin-bottom:6px;}
  .nav-card p{font-size:0.81rem;}

  /* 数据块 */
  .stats-row{gap:10px;}
  .stat-glass{padding:22px 12px;border-radius:14px;}
  .stat-number{font-size:1.55rem;}

  /* 价值列 */
  .value-col{padding:22px 16px;}
  .value-num{font-size:1.35rem;}
  .value-label{font-size:0.86rem;}
  .value-desc{font-size:0.76rem;}

  /* 简介条 */
  .intro-strip{padding:36px 0;}
  .intro-glass{padding:24px 18px;border-radius:18px;}
  .intro-glass p{font-size:0.86rem;line-height:1.85;}

  /* 按钮 */
  .btn-lg{padding:12px 22px;font-size:0.88rem;}
  .btn-sm{padding:7px 16px;font-size:0.78rem;}

  /* 色板更紧凑 */
  .color-swatch-preview{height:76px;padding:8px 10px;}
  .color-swatch-info{padding:10px 12px;}

  /* 报道卡 */
  .report-card{padding:14px 14px;border-radius:12px;}
  .report-body h4{font-size:0.86rem;-webkit-line-clamp:3;}
  .report-body p{font-size:0.77rem;}
  .report-meta{font-size:0.7rem;}

  /* 时间线 */
  .timeline-dot{width:34px;height:34px;font-size:0.76rem;}
  .timeline-year{font-size:0.95rem;}
  .timeline-title{font-size:0.89rem;}
  .timeline-desc{font-size:0.8rem;}

  /* 语料 */
  .quote-card{padding:16px 14px;border-radius:12px;}
  .quote-mark{font-size:1.5rem;top:12px;right:14px;}
  .quote-text{font-size:0.84rem;}
  .quote-category{font-size:0.64rem;padding:2px 8px;}

  /* 表格横向滚动 */
  table.data-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap;}
}

/* ===== 响应式 — 超小屏（390px以下）安全兜底 ===== */
@media(max-width:390px){
  .container,.container-narrow{padding:0 12px;}
  .nav-card{padding:20px 16px;}
  .hero-logo-glass{width:140px;height:140px;border-radius:18px;}
  .hero-logo-glass img{width:70px;height:70px;}
  .slogan-text{font-size:1.06rem;}
  .stat-number{font-size:1.4rem;}
  .stat-label{font-size:0.72rem;}
}