@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&display=swap');

/* ===== 变量 ===== */
:root {
  --mint: #b4fde1;
  --sky: #add8e6;
  --dark: #172620;
  --mint-deep: #7decc2;
  --sky-deep: #7bbdd4;
  --dark-mid: #234533;
  --dark-light: #2e5a42;
  --white: #f7fdfb;
  --card-bg: rgba(180,253,225,0.18);
  --card-border: #b4fde1;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --border-w: 3px;
  --shadow-out: 4px 6px 14px rgba(23,38,32,0.22), 2px 3px 6px rgba(23,38,32,0.14);
  --shadow-in: inset -2px -2px 8px rgba(255,255,255,0.35), inset 1px 1px 4px rgba(23,38,32,0.10);
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: 200ms cubic-bezier(0.34,1.56,0.64,1);
  --max-w: 1160px;
}

/* ===== 重置 ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:17px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--dark);
  color:var(--white);
  line-height:1.65;
  min-height:100vh;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--mint);text-decoration:none;transition:color 160ms ease}
a:hover{color:var(--mint-deep)}
h1,h2,h3,h4{font-weight:800;line-height:1.2;letter-spacing:-0.02em}
h1{font-size:clamp(1.9rem,5vw,3rem)}
h2{font-size:clamp(1.3rem,3vw,2rem)}
h3{font-size:1.15rem}
p{margin-bottom:1rem}
ul,ol{padding-left:1.4rem;margin-bottom:1rem}
li{margin-bottom:.4rem}

/* ===== 布局容器 ===== */
.wrap{
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 1.25rem;
}

/* ===== 头部 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(23,38,32,0.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:var(--border-w) solid var(--dark-light);
  box-shadow:0 2px 16px rgba(23,38,32,0.4);
}
.header-inner{
  max-width:var(--max-w);
  margin:0 auto;
  padding:.6rem 1.25rem;
  display:flex;
  align-items:center;
  gap:1rem;
}
.brand-wrap{
  display:flex;
  align-items:center;
  flex-shrink:0;
  color:var(--mint);
  font-weight:800;
  font-size:1.15rem;
}
.brand-icon{width:38px;height:38px;border-radius:50%;border:2px solid var(--mint);object-fit:cover}
.brand-icon-text{
  display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;
  background:var(--mint);
  color:var(--dark);
  font-weight:800;font-size:1.1rem;
  border-radius:50%;
  border:2px solid var(--mint-deep);
  box-shadow:var(--shadow-out);
}

/* 导航：header > nav > p > a */
.main-nav{
  flex:1;
  overflow:hidden;
}
.main-nav p{
  display:flex;
  flex-wrap:nowrap;
  align-items:center;
  gap:.5rem;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
  padding-bottom:2px;
}
.main-nav p::-webkit-scrollbar{display:none}
.main-nav p a{
  white-space:nowrap;
  font-size:.82rem;
  font-weight:600;
  color:rgba(247,253,251,0.75);
  padding:.45rem .7rem;
  border-radius:var(--radius-sm);
  min-height:40px;
  display:inline-flex;align-items:center;
  transition:background var(--transition), color 160ms ease;
  flex-shrink:0;
}
.main-nav p a:hover,[aria-current="page"]{
  background:rgba(180,253,225,0.13);
  color:var(--mint);
}
.nav-cta{
  background:var(--mint) !important;
  color:var(--dark) !important;
  font-weight:700 !important;
  border-radius:var(--radius-sm) !important;
  border:var(--border-w) solid var(--mint-deep) !important;
  box-shadow:var(--shadow-out);
  margin-left:.5rem;
  padding:.45rem 1rem !important;
  min-height:40px;
  transition:transform var(--transition), box-shadow var(--transition) !important;
}
.nav-cta:hover{
  transform:translateY(-2px) scale(1.03);
  box-shadow:6px 8px 18px rgba(23,38,32,0.3);
}

/* 汉堡按钮 */
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  background:none;border:none;cursor:pointer;
  padding:.5rem;min-width:40px;min-height:40px;
  border-radius:var(--radius-sm);
}
.nav-toggle span{
  display:block;width:22px;height:2.5px;
  background:var(--mint);border-radius:2px;
  transition:transform 200ms ease,opacity 200ms ease;
}

/* ===== 锚点条（文章页二级） ===== */
.anchor-bar{
  position:sticky;top:62px;z-index:90;
  background:rgba(35,69,51,0.95);
  border-bottom:2px solid var(--dark-light);
  backdrop-filter:blur(8px);
}
.anchor-inner{
  max-width:var(--max-w);margin:0 auto;
  padding:.4rem 1.25rem;
  display:flex;align-items:center;gap:.75rem;
  font-size:.8rem;font-weight:600;color:rgba(247,253,251,0.55);
  flex-wrap:wrap;
}
.anchor-inner a{color:var(--sky);min-height:40px;display:inline-flex;align-items:center}
.anchor-inner a:hover{color:var(--mint)}
.anchor-current{color:var(--white);font-weight:700}
.anchor-inner a+a::before,.anchor-inner a+span::before{content:'›';margin-right:.75rem;color:rgba(247,253,251,0.3)}

/* ===== 按钮 ===== */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--mint);
  color:var(--dark);
  font-weight:700;font-size:.95rem;
  padding:.65rem 1.4rem;
  border-radius:var(--radius-md);
  border:var(--border-w) solid var(--mint-deep);
  box-shadow:var(--shadow-out),var(--shadow-in);
  cursor:pointer;
  transition:transform var(--transition),box-shadow var(--transition);
  min-height:44px;
}
.btn-primary:hover{
  transform:translateY(-3px) scale(1.04);
  box-shadow:6px 10px 22px rgba(23,38,32,0.28),var(--shadow-in);
  color:var(--dark);
}
.btn-primary:active{transform:translateY(1px) scale(.98)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;
  color:var(--mint);
  font-weight:700;font-size:.95rem;
  padding:.65rem 1.4rem;
  border-radius:var(--radius-md);
  border:var(--border-w) solid var(--mint);
  box-shadow:var(--shadow-out);
  cursor:pointer;
  transition:transform var(--transition),background 160ms ease;
  min-height:44px;
}
.btn-ghost:hover{
  background:rgba(180,253,225,0.10);
  transform:translateY(-2px);
  color:var(--mint);
}
.btn-sm{font-size:.82rem;padding:.45rem 1rem;min-height:40px}

/* ===== 首页 Hero ===== */
.hero-section{
  padding:3rem 0 2rem;
}
.hero-content{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:2.5rem;
  align-items:center;
  min-height:calc(45vh - 62px);
  background:
    radial-gradient(circle at 80% 50%, rgba(173,216,230,0.08) 0%, transparent 60%),
    radial-gradient(circle at 20% 80%, rgba(180,253,225,0.06) 0%, transparent 50%);
  border-radius:var(--radius-lg);
  border:var(--border-w) solid var(--dark-light);
  padding:2.5rem;
  box-shadow:var(--shadow-out),var(--shadow-in);
  position:relative;
  overflow:hidden;
}
.hero-content::before{
  content:'';
  position:absolute;inset:0;
  background-image:
    radial-gradient(circle, rgba(180,253,225,0.12) 1px, transparent 1px);
  background-size:28px 28px;
  pointer-events:none;
  z-index:0;
}
.hero-text{
  position:relative;z-index:1;
  text-align:right;
  display:flex;flex-direction:column;align-items:flex-end;gap:1rem;
}
.eyebrow-tag{
  display:inline-block;
  background:var(--sky);
  color:var(--dark);
  font-size:.72rem;font-weight:700;
  padding:.25rem .75rem;
  border-radius:999px;
  border:2px solid var(--sky-deep);
  letter-spacing:.04em;
  box-shadow:2px 2px 6px rgba(23,38,32,0.2);
}
.hero-text h1{color:var(--mint)}
.hero-text .subtitle{
  color:rgba(247,253,251,0.7);
  font-size:1rem;
  max-width:420px;
}
.hero-actions{
  display:flex;gap:.75rem;flex-wrap:wrap;justify-content:flex-end;
}
.hero-media{
  position:relative;z-index:1;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:var(--border-w) solid var(--mint);
  box-shadow:var(--shadow-out);
  min-height:220px;
  display:flex;align-items:center;justify-content:center;
}
.hero-img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius-md)}
.hero-dots{
  background:
    radial-gradient(circle, rgba(180,253,225,0.22) 1.5px, transparent 1.5px);
  background-size:20px 20px;
  background-color:rgba(23,38,32,0.5);
  min-height:240px;
}

/* ===== 首页主体双栏 ===== */
.home-body{
  display:grid;
  grid-template-columns:1fr 320px;
  gap:2rem;
  padding:2rem 0 3rem;
  align-items:start;
}
.home-main{}
.page-content{margin-bottom:2rem}

/* 子页卡片网格 */
.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:1.25rem;
  margin-top:1.25rem;
}

/* 卡片 —— 玻璃拟态 + clay */
.child-card{
  display:flex;
  flex-direction:column;
  gap:.5rem;
  padding:1.25rem 1.35rem;
  background:rgba(180,253,225,0.08);
  border:var(--border-w) solid var(--mint);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-out),var(--shadow-in);
  backdrop-filter:blur(8px);
  transition:transform var(--transition),box-shadow var(--transition),background 160ms ease;
  color:var(--white);
  position:relative;
  overflow:hidden;
}
.child-card::after{
  content:'';
  position:absolute;top:-30%;right:-20%;
  width:60%;padding-bottom:60%;
  background:radial-gradient(circle,rgba(180,253,225,0.08) 0%,transparent 70%);
  pointer-events:none;
  border-radius:50%;
}
.child-card:hover{
  transform:translateY(-4px) scale(1.02);
  background:rgba(180,253,225,0.14);
  box-shadow:6px 10px 24px rgba(23,38,32,0.3),var(--shadow-in);
  color:var(--white);
}
.child-card strong{
  font-size:1rem;font-weight:700;
  color:var(--mint);
  display:block;
}
.child-card .card-desc{
  font-size:.84rem;
  color:rgba(247,253,251,0.65);
  line-height:1.4;
}
.child-card .card-date{
  font-size:.75rem;color:var(--sky);font-weight:600;margin-top:.25rem;
}

/* 子页卡片并列（不在li里的a>strong结构） */
.about-links .child-card,
.child-cards .child-card{
  margin-bottom:1rem;
}

/* ===== Aside ===== */
.home-aside,.article-aside{
  display:flex;flex-direction:column;gap:1.25rem;
  position:sticky;top:80px;
}
.aside-card{
  background:rgba(173,216,230,0.08);
  border:var(--border-w) solid var(--sky);
  border-radius:var(--radius-md);
  padding:1.25rem;
  box-shadow:var(--shadow-out),var(--shadow-in);
  backdrop-filter:blur(6px);
}
.aside-title{
  display:block;
  font-weight:700;font-size:.95rem;
  color:var(--sky);
  margin-bottom:.75rem;
}
.aside-links{
  display:flex;flex-direction:column;gap:.4rem;
}
.aside-link{
  display:block;
  padding:.4rem .6rem;
  border-radius:var(--radius-sm);
  font-size:.85rem;font-weight:600;
  color:rgba(247,253,251,0.75);
  transition:background 140ms ease,color 140ms ease;
  min-height:40px;display:flex;align-items:center;
}
.aside-link:hover{
  background:rgba(180,253,225,0.10);
  color:var(--mint);
}
.aside-cta{
  background:linear-gradient(135deg,rgba(180,253,225,0.12),rgba(173,216,230,0.10));
  border-color:var(--mint);
}
.aside-cta strong{display:block;font-size:1rem;color:var(--mint);margin-bottom:.5rem}
.aside-cta p{font-size:.84rem;color:rgba(247,253,251,0.65);margin-bottom:.75rem}

/* ===== 文章页布局 ===== */
.article-section,.about-section,.privacy-section,.default-section{
  display:grid;
  grid-template-columns:1fr 300px;
  gap:2rem;
  padding:2.5rem 0 3rem;
  align-items:start;
}
.article-body,.about-body,.privacy-body,.default-body{
  min-width:0;
}
.article-hero{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:var(--border-w) solid var(--mint);
  box-shadow:var(--shadow-out);
  margin-bottom:1.75rem;
}
.article-hero-img{width:100%;height:auto;border-radius:var(--radius-md)}
.article-header,.about-header,.privacy-header{
  margin-bottom:2rem;
  padding-bottom:1.25rem;
  border-bottom:2px solid var(--dark-light);
}
.article-header h1,.about-header h1,.privacy-header h1{color:var(--mint)}
.article-meta{
  display:flex;gap:1rem;flex-wrap:wrap;
  margin-top:.75rem;
}
.article-meta time{
  font-size:.78rem;font-weight:600;color:var(--sky);
  background:rgba(173,216,230,0.10);
  padding:.2rem .6rem;border-radius:999px;
  border:1.5px solid var(--sky-deep);
}
.date-mod{opacity:.75}

/* 正文内容样式 */
.article-content,.about-content,.privacy-content,.default-content,.page-content{
  font-size:1rem;line-height:1.75;color:rgba(247,253,251,0.88);
}
.article-content h2,.about-content h2,.privacy-content h2,.default-content h2,.page-content h2{
  color:var(--mint);margin:2rem 0 .5rem;
}
.article-content h3,.about-content h3,.privacy-content h3,.default-content h3,.page-content h3{
  color:var(--sky);margin:1.5rem 0 .4rem;
}
.article-content a,.about-content a,.privacy-content a,.default-content a,.page-content a{
  color:var(--sky);border-bottom:1.5px solid rgba(173,216,230,0.35);
  transition:color 140ms ease,border-color 140ms ease;
}
.article-content a:hover,.about-content a:hover,.privacy-content a:hover,.default-content a:hover,.page-content a:hover{
  color:var(--mint);border-color:var(--mint);
}
.article-content table,.about-content table,.privacy-content table,.page-content table{
  width:100%;border-collapse:collapse;margin:1.25rem 0;
  border-radius:var(--radius-sm);overflow:hidden;
  font-size:.9rem;
}
.article-content th,.about-content th,.page-content th{
  background:rgba(180,253,225,0.15);color:var(--mint);
  padding:.6rem .8rem;text-align:left;font-weight:700;
}
.article-content td,.about-content td,.page-content td{
  padding:.55rem .8rem;
  border-top:1px solid rgba(255,255,255,0.07);
  color:rgba(247,253,251,0.8);
}
.article-content blockquote,.page-content blockquote{
  border-left:4px solid var(--mint);
  padding:.75rem 1rem;
  margin:1.25rem 0;
  background:rgba(180,253,225,0.06);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-style:italic;color:rgba(247,253,251,0.7);
}
.article-content code,.page-content code{
  background:rgba(180,253,225,0.12);
  padding:.1em .4em;border-radius:6px;
  font-size:.88em;color:var(--mint);
}
.article-content pre,.page-content pre{
  background:rgba(23,38,32,0.8);
  border:2px solid var(--dark-light);
  border-radius:var(--radius-sm);
  padding:1rem;overflow-x:auto;margin:1.25rem 0;
}

/* 子页列表（文章页内） */
.child-cards{margin-top:2.5rem}
.child-cards h2{color:var(--mint)}

/* 文章页底部导航 */
.article-footer-nav,.privacy-nav{
  display:flex;gap:.75rem;flex-wrap:wrap;
  margin-top:2.5rem;
  padding-top:1.25rem;
  border-top:2px solid var(--dark-light);
}

/* ===== subtitle 副标题通用 ===== */
.subtitle{
  color:rgba(247,253,251,0.6);
  font-size:.95rem;
  margin-top:.35rem;
  margin-bottom:1rem;
  line-height:1.5;
}

/* ===== 页脚 footer > p + small ===== */
.site-footer{
  text-align:center;
  padding:1.75rem 1.25rem;
  background:rgba(23,38,32,0.7);
  border-top:var(--border-w) solid var(--dark-light);
  margin-top:2rem;
}
.footer-brand{
  font-size:.9rem;font-weight:600;color:rgba(247,253,251,0.65);
  margin-bottom:.4rem;
}
.footer-brand a{color:var(--sky);border-bottom:1px solid rgba(173,216,230,0.3)}
.footer-brand a:hover{color:var(--mint)}
.site-footer small{
  display:block;
  font-size:.75rem;color:rgba(247,253,251,0.35);
}

/* ===== 关于页特殊 ===== */
.about-links{margin-top:2.5rem}
.about-links h2{color:var(--mint);margin-bottom:.5rem}

/* ===== 动效 ===== */
@media (prefers-reduced-motion: no-preference) {
  .child-card{
    animation:card-appear .4s cubic-bezier(0.34,1.56,0.64,1) both;
  }
  .card-grid .child-card:nth-child(1){animation-delay:.05s}
  .card-grid .child-card:nth-child(2){animation-delay:.10s}
  .card-grid .child-card:nth-child(3){animation-delay:.15s}
  .card-grid .child-card:nth-child(4){animation-delay:.20s}
  .card-grid .child-card:nth-child(5){animation-delay:.25s}
  .card-grid .child-card:nth-child(6){animation-delay:.30s}
  .card-grid .child-card:nth-child(7){animation-delay:.35s}

  @keyframes card-appear{
    from{opacity:0;transform:translateY(18px) scale(.96)}
    to{opacity:1;transform:translateY(0) scale(1)}
  }

  .btn-primary:hover,.btn-ghost:hover,.nav-cta:hover{
    animation:soft-bounce 200ms cubic-bezier(0.34,1.56,0.64,1) forwards;
  }
  @keyframes soft-bounce{
    0%{transform:translateY(0)}
    60%{transform:translateY(-5px)}
    100%{transform:translateY(-3px)}
  }

  .aside-link{transition:transform 160ms ease,background 140ms ease,color 140ms ease}
  .aside-link:hover{transform:translateX(4px)}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
}

/* ===== 移动端响应 ===== */
@media (max-width:860px){
  .home-body{
    grid-template-columns:1fr;
  }
  .home-aside{position:static}
  .article-section,.about-section,.privacy-section,.default-section{
    grid-template-columns:1fr;
  }
  .article-aside{position:static}
  .hero-content{
    grid-template-columns:1fr;
    min-height:auto;
  }
  .hero-text{text-align:left;align-items:flex-start}
  .hero-actions{justify-content:flex-start}
  .hero-media{min-height:160px}
}

@media (max-width:640px){
  html{font-size:16px}
  .header-inner{padding:.5rem 1rem}
  .main-nav{display:none}
  .main-nav.open{
    display:block;
    position:fixed;inset:0;top:0;
    background:rgba(23,38,32,0.98);
    z-index:200;
    padding:5rem 1.5rem 2rem;
    overflow-y:auto;
  }
  .main-nav.open p{
    flex-direction:column;align-items:flex-start;
    gap:.5rem;
  }
  .main-nav.open p a{
    font-size:1rem;
    width:100%;
    min-height:48px;
    border-radius:var(--radius-sm);
  }
  .nav-toggle{display:flex}
  .nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
  .nav-toggle.active span:nth-child(2){opacity:0}
  .nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
  .wrap{padding:0 1rem}
  .hero-section{padding:1.5rem 0}
  .hero-content{padding:1.5rem}
  .card-grid{grid-template-columns:1fr}
  .anchor-inner{font-size:.73rem;gap:.5rem}
  .article-section,.about-section,.privacy-section{padding:1.5rem 0 2rem}
}