/* ============================================================
   梦想国际官网 — 全站样式表
   上海梦想国际法律ai有限公司 / mengxiangguoji-h5.com.cn
   纯原生 CSS，不依赖任何外部框架或远程字体。
   ============================================================ */

/* ---------- 1. 变量与基础重置 ---------- */
:root{
  --font-sans:"PingFang SC","Microsoft YaHei","Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  --font-serif:"Source Han Serif SC","Songti SC","STSong","SimSun",Georgia,serif;

  --c-bg:#f5f6fa;
  --c-bg-alt:#eef1f7;
  --c-surface:#ffffff;
  --c-surface-raised:#ffffff;
  --c-ink:#141c28;
  --c-ink-soft:#3c4757;
  --c-muted:#6b7484;
  --c-faint:#96a0b0;
  --c-border:#dde2ea;
  --c-border-soft:#eaedf3;

  --c-primary:#102a4c;
  --c-primary-2:#1c3f6e;
  --c-primary-soft:#e7ecf4;
  --c-accent:#b0812f;
  --c-accent-2:#8f6a24;
  --c-accent-soft:#f5ecd9;
  --c-teal:#0d6e74;
  --c-teal-soft:#dcf0ef;

  --c-danger:#a83f38;
  --c-danger-soft:#f7e4e2;
  --c-warning:#9c6d1e;
  --c-warning-soft:#f6ead2;
  --c-safe:#276b48;
  --c-safe-soft:#dfeee3;

  --radius-s:6px;
  --radius-m:12px;
  --radius-l:20px;
  --shadow-s:0 1px 3px rgba(16,26,45,.08);
  --shadow-m:0 8px 24px rgba(16,26,45,.10);
  --shadow-l:0 18px 48px rgba(16,26,45,.14);

  --maxw:1180px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  color:var(--c-ink);
  background:var(--c-bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary-2);text-decoration:none;}
a:hover{color:var(--c-accent);}
ul,ol{padding-left:1.3em;}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--c-primary);line-height:1.4;margin:0 0 .6em;font-weight:700;}
h1{font-size:clamp(1.7rem,3.6vw,2.5rem);}
h2{font-size:clamp(1.4rem,2.6vw,1.9rem);}
h3{font-size:clamp(1.15rem,2vw,1.4rem);}
h4{font-size:1.05rem;}
p{margin:0 0 1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.section{padding:56px 0;}
.section-tight{padding:32px 0;}
.section-alt{background:var(--c-bg-alt);}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}
.skip-link{position:absolute;left:-999px;top:0;background:var(--c-primary);color:#fff;padding:10px 16px;z-index:999;}
.skip-link:focus{left:8px;top:8px;}

/* ---------- 2. 头部与导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-border);
  backdrop-filter:saturate(160%) blur(6px);
}
.header-inner{
  max-width:var(--maxw);margin:0 auto;padding:12px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-weight:700;font-size:1.18rem;color:var(--c-primary);}
.brand img{width:38px;height:38px;}
.brand small{display:block;font-family:var(--font-sans);font-weight:400;font-size:.68rem;color:var(--c-muted);letter-spacing:.02em;}

.nav-toggle{
  display:none;background:none;border:1px solid var(--c-border);border-radius:var(--radius-s);
  width:42px;height:38px;position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:9px;right:9px;height:2px;background:var(--c-primary);transition:.2s;
}
.nav-toggle span{top:18px;}
.nav-toggle span::before{top:-7px;}
.nav-toggle span::after{top:7px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0;}

.main-nav{display:flex;}
.main-nav ul{list-style:none;display:flex;gap:2px;margin:0;padding:0;}
.main-nav a{
  display:block;padding:10px 14px;border-radius:var(--radius-s);font-size:.96rem;color:var(--c-ink-soft);font-weight:600;
}
.main-nav a:hover,.main-nav a.active{background:var(--c-primary-soft);color:var(--c-primary);}

@media (max-width:900px){
  .nav-toggle{display:block;}
  .main-nav{
    position:fixed;inset:60px 0 0 0;background:var(--c-surface);
    transform:translateY(-8px);opacity:0;pointer-events:none;transition:.18s;
    overflow-y:auto;border-top:1px solid var(--c-border);
  }
  .main-nav.open{opacity:1;pointer-events:auto;transform:translateY(0);}
  .main-nav ul{flex-direction:column;padding:14px;gap:4px;}
  .main-nav a{padding:14px 12px;font-size:1.05rem;}
}

/* ---------- 3. Hero ---------- */
.hero{
  background:linear-gradient(160deg,var(--c-primary) 0%,#0b3159 58%,#0d3c5f 100%);
  color:#eef2f8;padding:52px 0 60px;position:relative;overflow:hidden;
}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;}
.hero-eyebrow{display:inline-block;font-size:.8rem;letter-spacing:.06em;color:#cfe0c6;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);padding:5px 12px;border-radius:999px;margin-bottom:14px;}
.hero h1{color:#fff;margin-bottom:.5em;}
.hero p.lead{color:#cbd7e6;font-size:1.05rem;max-width:56ch;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 22px;}
.hero-tags span{font-size:.78rem;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:#dfe8f2;padding:4px 10px;border-radius:999px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-media{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-l);padding:14px;}
@media (max-width:860px){.hero-inner{grid-template-columns:1fr;}}

.btn{
  display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:999px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:var(--c-accent);color:#241a05;}
.btn-primary:hover{background:#c79640;color:#241a05;}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.4);}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;}
.btn-outline{background:transparent;border-color:var(--c-primary-2);color:var(--c-primary-2);}
.btn-outline:hover{background:var(--c-primary-soft);}

/* ---------- 4. 合规链 / 流程条 ---------- */
.chain-strip{overflow-x:auto;padding-bottom:10px;-webkit-overflow-scrolling:touch;}
.chain-strip .chain-inner{display:flex;gap:0;min-width:max-content;}
.chain-node{
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  min-width:112px;padding:14px 10px;background:var(--c-surface);border:1px solid var(--c-border);
  font-size:.82rem;font-weight:700;color:var(--c-primary);position:relative;
}
.chain-node:first-child{border-radius:var(--radius-m) 0 0 var(--radius-m);}
.chain-node:last-child{border-radius:0 var(--radius-m) var(--radius-m) 0;}
.chain-node::after{
  content:"→";position:absolute;right:-14px;top:50%;transform:translateY(-50%);color:var(--c-accent);font-weight:900;z-index:2;
}
.chain-node:last-child::after{content:"";}
.chain-node small{font-weight:400;color:var(--c-muted);font-size:.72rem;margin-top:3px;}

/* ---------- 5. 卡片 / 网格 ---------- */
.grid{display:grid;gap:22px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media (max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}}

.card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-m);padding:20px;box-shadow:var(--shadow-s);}
.card h3{margin-bottom:.4em;}
.card .meta{font-size:.8rem;color:var(--c-muted);margin-bottom:.5em;}

.section-head{max-width:74ch;margin-bottom:28px;}
.section-head .kicker{display:block;color:var(--c-accent-2);font-weight:800;letter-spacing:.04em;font-size:.85rem;margin-bottom:8px;text-transform:uppercase;}

/* ---------- 6. 文章模块 ---------- */
.article-feature{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-l);
  padding:30px 30px 26px;margin-bottom:26px;box-shadow:var(--shadow-s);
}
.article-feature .meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:.82rem;color:var(--c-muted);margin-bottom:10px;}
.article-feature .meta .tag{background:var(--c-primary-soft);color:var(--c-primary);padding:2px 10px;border-radius:999px;font-weight:700;}
.article-feature h2{margin-bottom:.5em;}
.article-feature .lede{font-size:1.02rem;color:var(--c-ink-soft);}
.article-body{max-width:80ch;}
.article-body p{margin:0 0 1.05em;}
.article-body h4{margin-top:1.3em;}
.article-figure{margin:20px 0;background:var(--c-bg-alt);border:1px solid var(--c-border-soft);border-radius:var(--radius-m);padding:16px;}
.article-figure figcaption{font-size:.82rem;color:var(--c-muted);margin-top:10px;line-height:1.6;}
.pull-callout{
  border-left:4px solid var(--c-accent);background:var(--c-accent-soft);padding:14px 18px;border-radius:0 var(--radius-s) var(--radius-s) 0;
  margin:18px 0;font-size:.96rem;color:var(--c-ink-soft);
}

.article-list-item{
  display:grid;grid-template-columns:1fr;gap:6px;padding:16px 0;border-bottom:1px solid var(--c-border-soft);
}
.article-list-item:last-child{border-bottom:none;}
.article-list-item .meta{font-size:.78rem;color:var(--c-muted);}
.article-list-item h4{margin:.2em 0 .3em;}
.article-list-item p{color:var(--c-ink-soft);font-size:.94rem;margin-bottom:.2em;}

.observation-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-m);padding:22px;margin-bottom:18px;}
.observation-card .meta{font-size:.8rem;color:var(--c-teal);font-weight:700;margin-bottom:6px;}

/* ---------- 7. 说明 / 提示框 ---------- */
.notice{border-radius:var(--radius-m);padding:16px 18px;font-size:.92rem;margin:18px 0;border:1px solid;}
.notice-warn{background:var(--c-warning-soft);border-color:#e7cf9c;color:#5f451a;}
.notice-danger{background:var(--c-danger-soft);border-color:#e3b3ae;color:#6b2620;}
.notice-safe{background:var(--c-safe-soft);border-color:#b7dcc3;color:#1c4a32;}
.notice-info{background:var(--c-primary-soft);border-color:#c3d2e8;color:var(--c-primary);}
.notice strong{display:block;margin-bottom:4px;}

.legal-disclaimer{
  background:var(--c-bg-alt);border:1px dashed var(--c-border);border-radius:var(--radius-m);
  padding:20px 22px;font-size:.86rem;color:var(--c-muted);line-height:1.8;
}

/* ---------- 8. 表格（国家规则比较 / 合同条款） ---------- */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--c-border);border-radius:var(--radius-m);}
table.compare{border-collapse:collapse;width:100%;min-width:640px;font-size:.9rem;}
table.compare th,table.compare td{padding:11px 14px;border-bottom:1px solid var(--c-border-soft);text-align:left;vertical-align:top;}
table.compare thead th{background:var(--c-primary);color:#fff;font-family:var(--font-serif);}
table.compare tbody tr:nth-child(even){background:var(--c-bg-alt);}
table.compare td.hl{color:var(--c-danger);font-weight:700;}

/* ---------- 9. Tabs（Playbook / 步骤演示） ---------- */
.tabs{border:1px solid var(--c-border);border-radius:var(--radius-m);overflow:hidden;background:var(--c-surface);}
.tabs-nav{display:flex;flex-wrap:wrap;border-bottom:1px solid var(--c-border);background:var(--c-bg-alt);}
.tabs-nav button{
  flex:1 1 auto;min-width:110px;padding:12px 10px;background:none;border:none;cursor:pointer;font-weight:700;color:var(--c-muted);
  font-size:.88rem;border-bottom:2px solid transparent;font-family:var(--font-sans);
}
.tabs-nav button.active{color:var(--c-primary);border-bottom-color:var(--c-accent);background:var(--c-surface);}
.tabs-panel{display:none;padding:18px 20px;}
.tabs-panel.active{display:block;}

/* ---------- 10. 时间线（法规版本） ---------- */
.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:6px;top:4px;bottom:4px;width:2px;background:var(--c-border);}
.timeline-item{position:relative;padding-bottom:22px;}
.timeline-item::before{content:"";position:absolute;left:-26px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--c-accent);border:2px solid #fff;box-shadow:0 0 0 2px var(--c-border);}
.timeline-item .status{font-size:.72rem;font-weight:800;padding:1px 8px;border-radius:999px;margin-left:8px;}
.status-current{background:var(--c-safe-soft);color:var(--c-safe);}
.status-amended{background:var(--c-warning-soft);color:var(--c-warning);}
.status-draft{background:var(--c-primary-soft);color:var(--c-primary);}
.status-repealed{background:var(--c-danger-soft);color:var(--c-danger);}

/* ---------- 11. FAQ ---------- */
.faq-item{border-bottom:1px solid var(--c-border);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;padding:16px 4px;font-weight:700;font-size:1rem;color:var(--c-ink);
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:var(--font-sans);
}
.faq-q::after{content:"+";font-size:1.3rem;color:var(--c-accent);flex:none;}
.faq-item.open .faq-q::after{content:"–";}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;color:var(--c-ink-soft);font-size:.95rem;}
.faq-item.open .faq-a{max-height:400px;}
.faq-a-inner{padding:0 4px 16px;}

/* ---------- 12. App 功能与下载 ---------- */
.feature-tile{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-m);padding:20px;text-align:left;}
.feature-tile .num{font-family:var(--font-serif);font-weight:700;color:var(--c-accent);font-size:1.1rem;}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
@media (max-width:760px){.download-grid{grid-template-columns:1fr;}}
.download-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-m);padding:22px;text-align:center;}
.download-card img{margin:0 auto 12px;width:64px;height:64px;}
.download-card .btn{margin-top:10px;width:100%;justify-content:center;}
.download-card[data-disabled="true"] .btn{background:var(--c-bg-alt);color:var(--c-muted);cursor:not-allowed;border:1px solid var(--c-border);}

/* ---------- 13. 关系图 / 网络图容器 ---------- */
.diagram-wrap{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius-m);padding:18px;overflow-x:auto;}
.diagram-wrap svg{min-width:520px;}
.diagram-caption{font-size:.84rem;color:var(--c-muted);margin-top:10px;line-height:1.7;}

/* ---------- 14. Badge / 标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0;}
.tag-row span{background:var(--c-bg-alt);border:1px solid var(--c-border);color:var(--c-ink-soft);font-size:.78rem;padding:3px 10px;border-radius:999px;}

/* ---------- 15. 公司介绍 / About ---------- */
.about-block{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:center;}
@media (max-width:820px){.about-block{grid-template-columns:1fr;}}
.about-facts{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:10px;}
.about-facts li{display:flex;gap:10px;font-size:.92rem;color:var(--c-ink-soft);}
.about-facts b{color:var(--c-primary);min-width:6.5em;}

/* ---------- 16. 页脚 ---------- */
.site-footer{background:var(--c-primary);color:#c9d5e6;padding:44px 0 24px;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:30px;}
@media (max-width:820px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr;}}
.site-footer h5{color:#fff;font-family:var(--font-sans);font-size:.92rem;margin-bottom:12px;letter-spacing:.02em;}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:8px;}
.site-footer a{color:#c9d5e6;font-size:.88rem;}
.site-footer a:hover{color:#fff;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.footer-brand img{width:34px;height:34px;}
.footer-note{font-size:.8rem;color:#8ea1bc;line-height:1.8;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:.78rem;color:#8ea1bc;}
.icp-slot{color:#8ea1bc;}

/* ---------- 17. 回到顶部 ---------- */
.back-top{
  position:fixed;right:18px;bottom:18px;width:44px;height:44px;border-radius:50%;background:var(--c-primary);
  color:#fff;border:none;display:none;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-m);z-index:60;font-size:1.1rem;
}
.back-top.show{display:flex;}

/* ---------- 18. AI 问答 / 助手界面示意 ---------- */
.assistant-demo{background:var(--c-primary);border-radius:var(--radius-l);padding:22px;color:#e8eefa;}
.assistant-demo .qa{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-m);padding:14px 16px;margin-bottom:12px;}
.assistant-demo .q{color:#f4d9a3;font-weight:700;font-size:.9rem;margin-bottom:6px;}
.assistant-demo .a{font-size:.9rem;color:#dbe6f4;}
.assistant-demo .a .label{color:#9fd2c8;font-weight:700;}

/* ---------- 19. 面包屑 ---------- */
.breadcrumb{font-size:.82rem;color:var(--c-muted);padding:14px 0 0;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}

/* ---------- 20. 工具类 ---------- */
.mt-0{margin-top:0;}
.mb-0{margin-bottom:0;}
.text-muted{color:var(--c-muted);}
.text-center{text-align:center;}
.small{font-size:.85rem;}
.divider{height:1px;background:var(--c-border);margin:36px 0;border:none;}
.badge-current{background:var(--c-safe-soft);color:var(--c-safe);font-weight:700;font-size:.74rem;padding:2px 9px;border-radius:999px;}
.badge-draft{background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;font-size:.74rem;padding:2px 9px;border-radius:999px;}
.badge-amended{background:var(--c-warning-soft);color:var(--c-warning);font-weight:700;font-size:.74rem;padding:2px 9px;border-radius:999px;}

@media (max-width:600px){
  .section{padding:38px 0;}
  .article-feature{padding:20px 18px 18px;}
}