/* ==========================================================================
   叮铛虎集团 · 全站设计系统
   美学方向：奢华编辑 × 杂志风 —— 琥珀 × 墨黑 × 暖纸白
   ========================================================================== */

/* ===================== 设计令牌 Design Tokens ===================== */
:root {
  /* 色彩 */
  --ink: oklch(20% 0.02 45);            /* 主墨黑（暖，非纯黑） */
  --ink-soft: oklch(38% 0.02 45);       /* 次级正文 */
  --ink-mute: oklch(52% 0.015 45);      /* 辅助文字 */
  --navy: oklch(21% 0.03 48);           /* 深墨底（暗色区块） */
  --navy-deep: oklch(15% 0.02 45);      /* 更深底 */
  --brand: oklch(68% 0.13 62);          /* 琥珀/虎橙 */
  --brand-deep: oklch(52% 0.12 55);     /* 深琥珀 */
  --paper: oklch(97.6% 0.006 80);       /* 暖纸白（非纯白） */
  --paper-2: oklch(94.5% 0.009 80);     /* 稍深纸色 */
  --line: oklch(88% 0.008 78);          /* 描边/发丝线 */
  --line-brand: oklch(68% 0.13 62 / 0.4); /* 琥珀发丝线 */

  /* 字体 */
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-body: "Manrope", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;

  /* 字号（模块化比例 1.25） */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;

  /* 间距（8pt 网格） */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 8rem;

  /* 动效 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-expo: cubic-bezier(0.22, 1, 0.36, 1);

  --radius: 2px;
  --max-w: 1200px;
}

/* ===================== 基础重置 ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--ink-soft);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

::selection { background: var(--brand); color: var(--navy-deep); }

.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 var(--space-4); }

/* 仅屏幕阅读器可见 */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* 无障碍：跳过链接 */
.skip-link {
  position: absolute; left: 1rem; top: -3rem;
  background: var(--brand); color: var(--navy-deep);
  padding: 0.6rem 1.2rem; z-index: 1000; font-weight: 700;
  transition: top 0.2s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

/* 标题体系 */
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--ink); font-weight: 600; line-height: 1.3; }

.section-eyebrow {
  display: inline-flex; align-items: center; gap: 0.75rem;
  font-family: var(--font-body); font-size: var(--text-xs);
  font-weight: 700; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--brand-deep);
}
.section-eyebrow::before { content: ""; width: 2rem; height: 1px; background: var(--brand); }

.section-title {
  font-size: clamp(1.75rem, 2.5vw + 0.9rem, 2.9rem);
  font-weight: 700; letter-spacing: 0.01em;
  margin-top: var(--space-3);
}
.section-lead { max-width: 62ch; margin-top: var(--space-3); font-size: var(--text-lg); color: var(--ink-mute); }

/* ===================== 按钮 ===================== */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.95rem 2.2rem; font-size: var(--text-base); font-weight: 700;
  letter-spacing: 0.04em; border-radius: var(--radius); transition: all 0.28s var(--ease-out);
}
.btn-brand { background: var(--brand); color: var(--navy-deep); }
.btn-brand:hover { background: oklch(73% 0.13 62); transform: translateY(-2px); box-shadow: 0 12px 30px oklch(68% 0.13 62 / 0.3); }
.btn-ghost { color: oklch(94% 0.01 85); border: 1px solid oklch(94% 0.01 85 / 0.35); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-dark { background: var(--navy); color: var(--paper); }
.btn-dark:hover { background: var(--brand-deep); transform: translateY(-2px); }

/* ===================== 顶栏 ===================== */
.topbar {
  background: var(--navy-deep); color: oklch(88% 0.01 85);
  font-size: var(--text-xs); letter-spacing: 0.04em;
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; height: 2.5rem; }
.topbar a { color: oklch(88% 0.01 85); transition: color 0.2s; }
.topbar a:hover { color: var(--brand); }
.topbar-left, .topbar-right { display: flex; align-items: center; gap: var(--space-3); }
.topbar-right .divider { opacity: 0.25; }

/* ===================== 导航 ===================== */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: oklch(97.6% 0.006 80 / 0.82);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s var(--ease-out);
}
.nav.is-scrolled { box-shadow: 0 8px 30px oklch(20% 0.02 45 / 0.06); }

.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 4.5rem; }

.brand { display: flex; align-items: center; gap: 0.75rem; }
.brand-mark {
  width: 2.5rem; height: 2.5rem; display: grid; place-items: center;
  background: var(--navy); border-radius: var(--radius); color: var(--brand);
}
.brand-mark svg { width: 1.5rem; height: 1.5rem; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; color: var(--ink); letter-spacing: 0.04em; }
.brand-sub { font-size: 0.6rem; letter-spacing: 0.3em; color: var(--ink-mute); text-transform: uppercase; font-weight: 600; }

.nav-links { display: flex; align-items: center; gap: var(--space-4); }
.nav-links a {
  position: relative; font-size: var(--text-sm); font-weight: 600; color: var(--ink-soft);
  letter-spacing: 0.03em; padding: 0.4rem 0; transition: color 0.2s var(--ease-out);
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: var(--brand); transform: scaleX(0); transform-origin: right;
  transition: transform 0.35s var(--ease-expo);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after { transform: scaleX(1); transform-origin: left; }

.nav-cta {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.65rem 1.4rem; font-size: var(--text-sm); font-weight: 700;
  color: var(--paper); background: var(--navy); letter-spacing: 0.04em;
  border-radius: var(--radius); transition: background 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}
.nav-cta:hover { background: var(--brand-deep); transform: translateY(-1px); }

.nav-toggle { display: none; width: 2.5rem; height: 2.5rem; position: relative; }
.nav-toggle span {
  position: absolute; left: 50%; width: 1.4rem; height: 2px; background: var(--ink);
  transform: translateX(-50%); transition: all 0.3s var(--ease-out);
}
.nav-toggle span:nth-child(1) { top: 0.85rem; }
.nav-toggle span:nth-child(2) { top: 1.25rem; }
.nav-toggle span:nth-child(3) { top: 1.65rem; }
.nav-toggle.is-open span:nth-child(1) { top: 1.25rem; transform: translateX(-50%) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { top: 1.25rem; transform: translateX(-50%) rotate(-45deg); }

/* ===================== 首页 Hero ===================== */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(120% 90% at 80% 10%, oklch(28% 0.04 50) 0%, var(--navy) 45%, var(--navy-deep) 100%);
  color: oklch(94% 0.01 85);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(oklch(94% 0.01 85 / 0.035) 1px, transparent 1px),
    linear-gradient(90deg, oklch(94% 0.01 85 / 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(80% 70% at 50% 30%, #000 0%, transparent 100%);
}
.hero::after {
  content: ""; position: absolute; right: -8rem; top: -8rem; width: 34rem; height: 34rem;
  background: radial-gradient(circle, oklch(68% 0.13 62 / 0.22) 0%, transparent 62%);
  pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; justify-content: center;
  min-height: min(92vh, 900px); padding: var(--space-7) 0 var(--space-6);
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--brand); padding: 0.45rem 1rem;
  border: 1px solid oklch(68% 0.13 62 / 0.4); border-radius: 999px;
}
.hero-tag::before { content: ""; width: 0.4rem; height: 0.4rem; border-radius: 50%; background: var(--brand); }
.hero-title {
  font-size: clamp(2.4rem, 5.4vw + 1rem, 4.6rem);
  font-weight: 900; letter-spacing: 0.02em; line-height: 1.18;
  color: oklch(97% 0.005 85); margin-top: var(--space-4); max-width: 18ch;
}
.hero-title .accent {
  font-weight: 500; color: var(--brand);
  background: linear-gradient(transparent 62%, oklch(68% 0.13 62 / 0.28) 62%);
}
.hero-desc {
  margin-top: var(--space-4); max-width: 54ch;
  font-size: clamp(1.05rem, 1vw + 0.8rem, 1.3rem); color: oklch(86% 0.01 85);
  line-height: 1.9; font-weight: 400;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-5); }
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4);
  margin-top: var(--space-6); padding-top: var(--space-4);
  border-top: 1px solid oklch(94% 0.01 85 / 0.14);
}
.hero-stat .num {
  font-family: var(--font-display); font-size: clamp(1.7rem, 2.5vw, 2.6rem);
  font-weight: 700; color: oklch(97% 0.005 85); line-height: 1.1;
}
.hero-stat .num sup { font-size: 0.5em; color: var(--brand); font-weight: 600; margin-left: 0.1em; }
.hero-stat .label { margin-top: 0.4rem; font-size: var(--text-xs); letter-spacing: 0.16em; color: oklch(78% 0.01 85); }

.scroll-hint {
  position: absolute; left: 50%; bottom: 2rem; transform: translateX(-50%); z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  font-size: 0.65rem; letter-spacing: 0.3em; color: oklch(70% 0.01 85);
}
.scroll-hint .mouse { width: 1.4rem; height: 2.2rem; border: 1px solid oklch(94% 0.01 85 / 0.4); border-radius: 1rem; position: relative; }
.scroll-hint .mouse::after {
  content: ""; position: absolute; top: 0.4rem; left: 50%; width: 3px; height: 0.5rem;
  background: var(--brand); border-radius: 2px; transform: translateX(-50%);
  animation: scroll 1.8s var(--ease-out) infinite;
}
@keyframes scroll { 0% { opacity: 1; top: 0.4rem; } 70% { opacity: 0; top: 1.3rem; } 100% { opacity: 0; } }

/* ===================== 内页 Banner ===================== */
.page-hero {
  position: relative; overflow: hidden;
  background: radial-gradient(120% 100% at 85% 0%, oklch(26% 0.04 50) 0%, var(--navy) 50%, var(--navy-deep) 100%);
  color: oklch(94% 0.01 85);
  padding: var(--space-6) 0 var(--space-5);
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(oklch(94% 0.01 85 / 0.03) 1px, transparent 1px),
    linear-gradient(90deg, oklch(94% 0.01 85 / 0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(70% 100% at 50% 0%, #000 0%, transparent 100%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 {
  font-size: clamp(2rem, 3.6vw + 0.6rem, 3.2rem);
  font-weight: 900; color: oklch(97% 0.005 85); letter-spacing: 0.02em;
}
.page-hero .sub { margin-top: var(--space-2); color: oklch(84% 0.01 85); max-width: 60ch; }

.breadcrumb {
  display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap;
  font-size: var(--text-xs); letter-spacing: 0.06em; color: oklch(70% 0.01 85);
}
.breadcrumb a { color: oklch(82% 0.01 85); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .cur { color: var(--brand); }

/* ===================== 荣誉条 ===================== */
.strip { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.strip-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-3) 0; }
.strip-item { display: flex; align-items: center; gap: 0.75rem; color: var(--ink-mute); font-size: var(--text-sm); font-weight: 600; letter-spacing: 0.04em; }
.strip-item .dot { width: 0.5rem; height: 0.5rem; background: var(--brand); transform: rotate(45deg); }

/* ===================== 区块通用 ===================== */
.section { padding: var(--space-8) 0; }
.section-alt { background: var(--paper-2); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-6); }

/* ===================== 首页·集团概览 ===================== */
.about-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: var(--space-7); align-items: center; margin-top: var(--space-6); }
.about-copy p { margin-top: var(--space-3); font-size: var(--text-lg); line-height: 1.9; color: var(--ink-mute); max-width: 54ch; }
.about-copy p strong { color: var(--ink); font-weight: 700; }
.about-visual { position: relative; }
.about-visual .frame {
  position: relative; aspect-ratio: 4 / 4.6; overflow: hidden; border-radius: var(--radius);
  background: linear-gradient(160deg, oklch(28% 0.04 50) 0%, oklch(22% 0.03 48) 55%, var(--navy-deep) 100%);
  display: grid; place-items: center;
}
.about-visual .frame::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(oklch(97% 0.005 85 / 0.05) 1px, transparent 1px),
    linear-gradient(90deg, oklch(97% 0.005 85 / 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}
.about-visual .frame svg { position: relative; width: 62%; height: auto; }
.about-visual .badge {
  position: absolute; right: -1rem; bottom: 2.5rem;
  background: var(--paper); border: 1px solid var(--line);
  padding: 1.2rem 1.5rem; box-shadow: 0 20px 50px oklch(20% 0.02 45 / 0.12);
}
.about-visual .badge .b-num { font-family: var(--font-display); font-size: 2rem; font-weight: 700; color: var(--ink); }
.about-visual .badge .b-label { font-size: var(--text-xs); letter-spacing: 0.14em; color: var(--ink-mute); margin-top: 0.2rem; }
.about-points { margin-top: var(--space-5); display: grid; gap: var(--space-3); }
.about-point { display: flex; gap: 1rem; padding-bottom: var(--space-3); border-bottom: 1px solid var(--line); }
.about-point:last-child { border-bottom: none; }
.about-point .idx { font-family: var(--font-display); font-size: 1.3rem; color: var(--brand-deep); font-weight: 600; line-height: 1; }
.about-point h4 { font-size: 1.1rem; margin-bottom: 0.25rem; }
.about-point p { font-size: var(--text-sm); color: var(--ink-mute); }

/* ===================== 首页·核心业务 ===================== */
.business-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--space-3); }
.biz-card {
  position: relative; overflow: hidden;
  grid-column: span 4; padding: var(--space-4);
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform 0.4s var(--ease-expo), border-color 0.4s, box-shadow 0.4s;
}
.biz-card:nth-child(1) { grid-column: span 7; }
.biz-card:nth-child(2) { grid-column: span 5; }
.biz-card:nth-child(3) { grid-column: span 5; }
.biz-card:nth-child(4) { grid-column: span 7; }
.biz-card:nth-child(5) { grid-column: span 12; }
.biz-card:hover { transform: translateY(-6px); border-color: var(--brand); box-shadow: 0 24px 50px oklch(20% 0.02 45 / 0.1); }
.biz-card .num {
  font-family: var(--font-display); font-size: 2.6rem; font-weight: 900; line-height: 1;
  color: transparent; -webkit-text-stroke: 1px var(--brand-deep);
}
.biz-card h3 { font-size: 1.5rem; margin: var(--space-3) 0 var(--space-2); }
.biz-card p { color: var(--ink-mute); font-size: var(--text-sm); max-width: 46ch; }
.biz-card .tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: var(--space-3); }
.biz-card .tag {
  font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.04em;
  color: var(--ink-soft); background: var(--paper-2); padding: 0.3rem 0.7rem; border-radius: 999px;
}
.biz-card .arrow {
  position: absolute; top: var(--space-4); right: var(--space-4);
  width: 2.4rem; height: 2.4rem; display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 50%; color: var(--ink-soft);
  transition: all 0.3s var(--ease-out);
}
.biz-card:hover .arrow { background: var(--navy); border-color: var(--navy); color: var(--brand); transform: rotate(45deg); }

/* ===================== 首页·发展历程 ===================== */
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); position: relative; margin-top: var(--space-6); }
.timeline::before { content: ""; position: absolute; top: 1.5rem; left: 0; right: 0; height: 1px; background: var(--line-brand); }
.tl-item { position: relative; padding-top: 3.2rem; }
.tl-item .year { font-family: var(--font-display); font-size: 1.9rem; font-weight: 700; color: var(--brand-deep); line-height: 1; }
.tl-item::before {
  content: ""; position: absolute; top: 1.5rem; left: 0; width: 0.7rem; height: 0.7rem;
  background: var(--paper); border: 2px solid var(--brand); border-radius: 50%; transform: translate(-1px, -50%);
  transition: background 0.3s;
}
.tl-item:hover::before { background: var(--brand); }
.tl-item h4 { font-size: 1.05rem; margin: var(--space-2) 0 0.5rem; }
.tl-item p { font-size: var(--text-sm); color: var(--ink-mute); }

/* ===================== 新闻卡片（首页/列表共用） ===================== */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-5) var(--space-4); margin-top: var(--space-6); }
.news-card { display: flex; flex-direction: column; border-top: 1px solid var(--line); padding-top: var(--space-3); transition: border-color 0.3s; }
.news-card:hover { border-top-color: var(--brand); }
.news-meta { display: flex; align-items: center; gap: 0.75rem; font-size: var(--text-xs); color: var(--ink-mute); letter-spacing: 0.06em; }
.news-meta .cate { color: var(--brand-deep); font-weight: 700; }
.news-card h3 { font-size: 1.35rem; margin: var(--space-2) 0; transition: color 0.3s; }
.news-card:hover h3 { color: var(--brand-deep); }
.news-card p { font-size: var(--text-sm); color: var(--ink-mute); flex: 1; }
.news-more { display: inline-flex; align-items: center; gap: 0.4rem; margin-top: var(--space-3); font-size: var(--text-sm); font-weight: 700; color: var(--ink); }
.news-more svg { transition: transform 0.3s var(--ease-out); }
.news-card:hover .news-more svg { transform: translateX(4px); }

/* ===================== 新闻列表页 ===================== */
.news-list { display: flex; flex-direction: column; }
.news-list-item {
  display: grid; grid-template-columns: 9rem 1fr auto; gap: var(--space-4); align-items: center;
  padding: var(--space-4) 0; border-bottom: 1px solid var(--line);
  transition: padding 0.3s var(--ease-out);
}
.news-list-item:first-child { border-top: 1px solid var(--line); }
.news-list-item:hover { padding-left: 0.75rem; }
.news-list-item .date { font-family: var(--font-display); color: var(--ink-mute); }
.news-list-item .date b { display: block; font-size: 2rem; font-weight: 700; color: var(--ink); line-height: 1; }
.news-list-item .date span { font-size: var(--text-xs); letter-spacing: 0.1em; }
.news-list-item .body h3 { font-size: 1.25rem; margin-bottom: 0.4rem; transition: color 0.3s; }
.news-list-item:hover .body h3 { color: var(--brand-deep); }
.news-list-item .body p { font-size: var(--text-sm); color: var(--ink-mute); max-width: 58ch; }
.news-list-item .body .news-meta { margin-bottom: 0.4rem; }
.news-list-item .go { width: 2.6rem; height: 2.6rem; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--ink-soft); transition: all 0.3s var(--ease-out); }
.news-list-item:hover .go { background: var(--navy); border-color: var(--navy); color: var(--brand); }

/* ===================== 分页 ===================== */
.pagination { display: flex; align-items: center; justify-content: center; gap: 0.5rem; margin-top: var(--space-5); }
.pagination a, .pagination span {
  min-width: 2.6rem; height: 2.6rem; display: inline-flex; align-items: center; justify-content: center;
  font-size: var(--text-sm); font-weight: 600; color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: var(--radius); transition: all 0.25s var(--ease-out);
}
.pagination a:hover { border-color: var(--brand); color: var(--brand-deep); }
.pagination .cur { background: var(--navy); border-color: var(--navy); color: var(--brand); }

/* ===================== 文章详情 ===================== */
.article { max-width: 760px; margin: 0 auto; }
.article-header { padding: var(--space-6) 0 var(--space-4); border-bottom: 1px solid var(--line); }
.article-header h1 { font-size: clamp(1.8rem, 3vw + 0.6rem, 2.6rem); font-weight: 800; line-height: 1.35; }
.article-meta { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-3); font-size: var(--text-xs); color: var(--ink-mute); letter-spacing: 0.06em; }
.article-meta .cate { color: var(--brand-deep); font-weight: 700; }
.article-body { padding: var(--space-5) 0 var(--space-6); font-size: var(--text-lg); line-height: 2; color: var(--ink-soft); }
.article-body p { margin-bottom: var(--space-3); }
.article-body h2 { font-size: 1.5rem; margin: var(--space-5) 0 var(--space-2); }
.article-body h3 { font-size: 1.25rem; margin: var(--space-4) 0 var(--space-2); }
.article-body blockquote {
  margin: var(--space-4) 0; padding: var(--space-3) var(--space-4);
  border-left: 3px solid var(--brand); background: var(--paper-2);
  font-family: var(--font-display); font-size: 1.2rem; color: var(--ink); line-height: 1.8;
}
.article-body ul, .article-body ol { margin: 0 0 var(--space-3) 1.5rem; }
.article-body ul li { list-style: disc; margin-bottom: 0.4rem; }
.article-body ol li { list-style: decimal; margin-bottom: 0.4rem; }
.article-body strong { color: var(--ink); }
.article-body .lead { font-size: 1.3rem; color: var(--ink); font-weight: 500; }
.article-foot { padding: var(--space-4) 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: var(--space-3); flex-wrap: wrap; }

/* ===================== 商家列表 ===================== */
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: var(--space-5); }
.filter-btn {
  padding: 0.55rem 1.3rem; font-size: var(--text-sm); font-weight: 600;
  color: var(--ink-soft); border: 1px solid var(--line); border-radius: 999px;
  transition: all 0.25s var(--ease-out);
}
.filter-btn:hover { border-color: var(--brand); color: var(--brand-deep); }
.filter-btn.active { background: var(--navy); border-color: var(--navy); color: var(--brand); }

.merchant-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-top: var(--space-4); }
.merchant-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform 0.4s var(--ease-expo), border-color 0.4s, box-shadow 0.4s;
}
.merchant-card:hover { transform: translateY(-6px); border-color: var(--brand); box-shadow: 0 24px 50px oklch(20% 0.02 45 / 0.1); }
.merchant-cover {
  position: relative; aspect-ratio: 16 / 10; overflow: hidden;
  display: grid; place-items: center; color: oklch(97% 0.005 85);
}
.merchant-cover svg { width: 3rem; height: 3rem; opacity: 0.9; }
.merchant-cover .cate-tag {
  position: absolute; left: 0.75rem; top: 0.75rem;
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.06em;
  background: oklch(97% 0.005 85 / 0.92); color: var(--ink);
  padding: 0.25rem 0.7rem; border-radius: 999px;
}
.cover-a { background: linear-gradient(140deg, oklch(62% 0.13 55), oklch(40% 0.1 45)); }
.cover-b { background: linear-gradient(140deg, oklch(50% 0.1 250), oklch(30% 0.08 255)); }
.cover-c { background: linear-gradient(140deg, oklch(60% 0.14 150), oklch(38% 0.1 160)); }
.cover-d { background: linear-gradient(140deg, oklch(55% 0.12 300), oklch(35% 0.09 310)); }
.cover-e { background: linear-gradient(140deg, oklch(58% 0.12 25), oklch(38% 0.1 30)); }
.cover-f { background: linear-gradient(140deg, oklch(55% 0.11 210), oklch(33% 0.09 220)); }

.merchant-body { padding: var(--space-3); display: flex; flex-direction: column; flex: 1; }
.merchant-body h3 { font-size: 1.25rem; }
.merchant-body .addr { display: flex; align-items: center; gap: 0.4rem; font-size: var(--text-xs); color: var(--ink-mute); margin-top: 0.35rem; }
.merchant-body .desc { font-size: var(--text-sm); color: var(--ink-mute); margin-top: var(--space-2); flex: 1; }
.merchant-foot { display: flex; align-items: center; justify-content: space-between; margin-top: var(--space-3); }
.rating { display: flex; align-items: center; gap: 0.3rem; color: var(--brand-deep); font-weight: 700; font-size: var(--text-sm); }
.rating .stars { color: var(--brand); letter-spacing: 0.1em; }
.merchant-link { display: inline-flex; align-items: center; gap: 0.4rem; font-size: var(--text-sm); font-weight: 700; color: var(--ink); }
.merchant-link svg { transition: transform 0.3s var(--ease-out); }
.merchant-card:hover .merchant-link svg { transform: translateX(4px); }

/* ===================== 商家详情 ===================== */
.md-wrap { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--space-6); margin-top: var(--space-6); }
.md-cover { position: relative; aspect-ratio: 16 / 10; border-radius: var(--radius); overflow: hidden; display: grid; place-items: center; color: oklch(97% 0.005 85); }
.md-cover svg { width: 5rem; height: 5rem; }
.md-info h1 { font-size: clamp(1.8rem, 3vw, 2.4rem); }
.md-info .meta-row { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; margin-top: var(--space-2); }
.md-info .desc { margin-top: var(--space-3); font-size: var(--text-lg); color: var(--ink-mute); }
.md-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: var(--space-3); }
.md-tags .tag { font-size: var(--text-xs); font-weight: 600; color: var(--ink-soft); background: var(--paper-2); padding: 0.3rem 0.8rem; border-radius: 999px; }

.info-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: var(--space-4); }
.info-card h3 { font-size: 1.1rem; margin-bottom: var(--space-3); }
.info-list li { display: flex; gap: 0.8rem; padding: 0.7rem 0; border-bottom: 1px solid var(--line); font-size: var(--text-sm); color: var(--ink-soft); }
.info-list li:last-child { border-bottom: none; }
.info-list li svg { flex-shrink: 0; margin-top: 0.2rem; color: var(--brand-deep); }
.info-list li b { color: var(--ink); font-weight: 600; min-width: 4.2rem; }

/* ===================== 首页·ESG ===================== */
.esg-wrap { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: var(--space-7); align-items: center; margin-top: var(--space-6); }
.esg-pillars { display: grid; gap: var(--space-3); }
.esg-pillar { display: flex; gap: 1.25rem; padding: var(--space-3); background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); transition: border-color 0.3s, transform 0.3s; }
.esg-pillar:hover { border-color: var(--brand); transform: translateX(4px); }
.esg-pillar .icon { width: 3rem; height: 3rem; flex-shrink: 0; display: grid; place-items: center; background: var(--navy); color: var(--brand); border-radius: var(--radius); }
.esg-pillar h4 { font-size: 1.15rem; margin-bottom: 0.4rem; }
.esg-pillar p { font-size: var(--text-sm); color: var(--ink-mute); }
.esg-copy .big { font-family: var(--font-display); font-size: clamp(1.5rem, 2vw + 0.8rem, 2.2rem); line-height: 1.5; color: var(--ink); font-weight: 500; }
.esg-copy .big em { font-style: normal; color: var(--brand-deep); }

/* ===================== 关于我们·特色区块 ===================== */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-top: var(--space-6); }
.value-card { padding: var(--space-4); background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); transition: border-color 0.3s, transform 0.3s; }
.value-card:hover { border-color: var(--brand); transform: translateY(-4px); }
.value-card .icon { width: 3.2rem; height: 3.2rem; display: grid; place-items: center; background: var(--navy); color: var(--brand); border-radius: var(--radius); margin-bottom: var(--space-3); }
.value-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.value-card p { font-size: var(--text-sm); color: var(--ink-mute); }

.honor-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); margin-top: var(--space-5); }
.honor-item { display: flex; align-items: center; gap: 1rem; padding: var(--space-3); background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); }
.honor-item .yr { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; color: var(--brand-deep); line-height: 1; }
.honor-item .txt b { display: block; color: var(--ink); font-weight: 600; }
.honor-item .txt span { font-size: var(--text-sm); color: var(--ink-mute); }

.quote-block {
  position: relative; margin-top: var(--space-6); padding: var(--space-5);
  background: var(--navy); color: oklch(90% 0.01 85); border-radius: var(--radius);
}
.quote-block::before {
  content: "“"; position: absolute; top: -1.5rem; left: var(--space-4);
  font-family: var(--font-display); font-size: 6rem; color: var(--brand); line-height: 1;
}
.quote-block p { font-family: var(--font-display); font-size: clamp(1.2rem, 1.6vw + 0.6rem, 1.6rem); line-height: 1.8; }
.quote-block .who { margin-top: var(--space-3); font-size: var(--text-sm); color: oklch(75% 0.01 85); letter-spacing: 0.06em; }

/* ===================== FAQ ===================== */
.faq-list { margin-top: var(--space-5); border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
  padding: var(--space-3) 0; text-align: left;
  font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; color: var(--ink);
  transition: color 0.3s;
}
.faq-q:hover { color: var(--brand-deep); }
.faq-q .icon { width: 1.9rem; height: 1.9rem; flex-shrink: 0; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; transition: all 0.3s var(--ease-out); }
.faq-q .icon svg { transition: transform 0.3s var(--ease-out); }
.faq-item.open .faq-q .icon { background: var(--navy); border-color: var(--navy); }
.faq-item.open .faq-q .icon svg { transform: rotate(45deg); stroke: var(--brand); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s var(--ease-expo); }
.faq-a-inner { padding: 0 0 var(--space-3); color: var(--ink-mute); max-width: 76ch; }

/* ===================== CTA ===================== */
.cta-band { position: relative; overflow: hidden; background: var(--navy-deep); color: oklch(94% 0.01 85); }
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(70% 120% at 90% 0%, oklch(68% 0.13 62 / 0.16) 0%, transparent 55%);
}
.cta-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); padding: var(--space-6) 0; flex-wrap: wrap; }
.cta-inner h2 { color: oklch(97% 0.005 85); font-size: clamp(1.6rem, 2.4vw + 0.7rem, 2.5rem); }
.cta-inner p { margin-top: 0.6rem; color: oklch(80% 0.01 85); max-width: 50ch; }

/* ===================== 页脚 ===================== */
.footer { background: var(--navy-deep); color: oklch(80% 0.01 85); }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--space-6); padding: var(--space-6) 0 var(--space-5); }
.footer h4 { color: oklch(97% 0.005 85); font-size: 1rem; margin-bottom: var(--space-3); font-family: var(--font-body); font-weight: 700; letter-spacing: 0.08em; }
.footer .brand-name { color: oklch(97% 0.005 85); }
.footer .brand-sub { color: oklch(60% 0.01 85); }
.footer-desc { margin-top: var(--space-3); font-size: var(--text-sm); color: oklch(65% 0.01 85); max-width: 34ch; }
.footer-links li { margin-bottom: 0.7rem; }
.footer-links a { font-size: var(--text-sm); color: oklch(72% 0.01 85); transition: color 0.2s; }
.footer-links a:hover { color: var(--brand); }
.footer-contact li { display: flex; gap: 0.6rem; margin-bottom: 0.8rem; font-size: var(--text-sm); color: oklch(72% 0.01 85); }
.footer-contact li svg { flex-shrink: 0; margin-top: 0.2rem; color: var(--brand); }
.footer-bottom { border-top: 1px solid oklch(94% 0.01 85 / 0.12); padding: var(--space-3) 0; display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); flex-wrap: wrap; font-size: var(--text-xs); color: oklch(55% 0.01 85); }
.footer-bottom a { color: oklch(70% 0.01 85); }
.footer-bottom a:hover { color: var(--brand); }

/* ===================== 滚动显现动画 ===================== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.9s var(--ease-expo), transform 0.9s var(--ease-expo); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ===================== 响应式 ===================== */
@media (max-width: 960px) {
  .about-grid, .esg-wrap, .md-wrap { grid-template-columns: 1fr; gap: var(--space-5); }
  .about-visual { order: -1; max-width: 30rem; }
  .timeline { grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
  .timeline::before { display: none; }
  .biz-card, .biz-card:nth-child(1), .biz-card:nth-child(2), .biz-card:nth-child(3), .biz-card:nth-child(4), .biz-card:nth-child(5) { grid-column: span 6; }
  .biz-card:nth-child(5) { grid-column: span 12; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .merchant-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: 1fr; }
  .honor-list { grid-template-columns: 1fr; }
  .news-list-item { grid-template-columns: 7rem 1fr; }
  .news-list-item .go { display: none; }
}

@media (max-width: 640px) {
  .topbar { display: none; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-links.mobile-show {
    display: flex; position: absolute; top: 4.5rem; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 0.5rem var(--space-4);
    box-shadow: 0 20px 40px oklch(20% 0.02 45 / 0.1);
  }
  .nav-links.mobile-show a { width: 100%; padding: 1rem 0; border-bottom: 1px solid var(--line); }
  .nav-links.mobile-show a:last-child { border-bottom: none; }

  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-3) var(--space-4); }
  .scroll-hint { display: none; }
  .section { padding: var(--space-6) 0; }
  .news-grid { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .biz-card, .biz-card:nth-child(1), .biz-card:nth-child(2), .biz-card:nth-child(3), .biz-card:nth-child(4), .biz-card:nth-child(5) { grid-column: span 12; }
  .footer-top { grid-template-columns: 1fr; gap: var(--space-4); }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .about-visual .badge { right: 0.5rem; bottom: 1rem; }
  .merchant-grid { grid-template-columns: 1fr; }
  .news-list-item { grid-template-columns: 1fr; }
}