:root{
  --brand:#c8102e;
  --brand-dark:#8f0a20;
  --brand-soft:#ffe9ed;
  --brand-glow:rgba(200,16,46,.28);
  --accent:#ff5a72;
  --accent-2:#ff9a5a;
  --ink:#1b1d22;
  --ink-strong:#0f1115;
  --muted:#5b6270;
  --muted-2:#8a909c;
  --bg:#ffffff;
  --bg-elev:#ffffff;
  --soft:#f5f6f8;
  --soft-2:#eef0f4;
  --line:#e6e8ec;
  --line-strong:#d7dae1;
  --glass:rgba(255,255,255,.72);
  --glass-border:rgba(255,255,255,.55);
  --shadow-sm:0 2px 8px rgba(17,19,24,.05);
  --shadow-md:0 10px 28px rgba(17,19,24,.08);
  --shadow-lg:0 22px 54px rgba(17,19,24,.14);
  --radius:16px;
  --radius-sm:12px;
  --radius-lg:24px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.32s;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
}

body.dark{
  --brand:#ff4d68;
  --brand-dark:#ff7a8f;
  --brand-soft:#2a1218;
  --brand-glow:rgba(255,77,104,.3);
  --accent:#ff7a8f;
  --accent-2:#ffb07a;
  --ink:#e8eaee;
  --ink-strong:#ffffff;
  --muted:#a2a8b4;
  --muted-2:#7d8492;
  --bg:#0f1115;
  --bg-elev:#181b21;
  --soft:#15181e;
  --soft-2:#1c2027;
  --line:#2a2d36;
  --line-strong:#3a3e49;
  --glass:rgba(24,27,33,.72);
  --glass-border:rgba(255,255,255,.08);
  --shadow-sm:0 2px 8px rgba(0,0,0,.3);
  --shadow-md:0 10px 28px rgba(0,0,0,.42);
  --shadow-lg:0 22px 54px rgba(0,0,0,.55);
}

*,*::before,*::after{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  scroll-padding-top:86px;
}

body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(1100px 620px at 88% -12%,var(--brand-glow),transparent 62%),
    radial-gradient(900px 560px at -8% 8%,rgba(255,154,90,.16),transparent 60%);
  opacity:.9;
}

a{color:var(--brand);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{text-decoration:underline}
a:focus-visible,
button:focus-visible,
input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}

img,svg{max-width:100%;display:block}
img{height:auto}

h1,h2,h3,h4,h5,h6{
  color:var(--ink-strong);
  line-height:1.32;
  letter-spacing:-.01em;
  font-weight:800;
}

p{margin:0 0 14px}

::selection{background:var(--brand);color:#fff}

.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 20px;
  width:100%;
}

.skip{
  position:absolute;
  left:-9999px;
  top:0;
  z-index:999;
  background:var(--bg-elev);
  color:var(--brand);
  padding:10px 16px;
  border-radius:var(--radius-sm);
  border:2px solid var(--brand);
  font-weight:700;
}
.skip:focus{left:12px;top:12px}

/* ============ 顶栏 ============ */
.topbar{
  background:linear-gradient(90deg,var(--brand-dark),var(--brand) 55%,var(--accent));
  color:#fff;
  font-size:13px;
  letter-spacing:.01em;
  position:relative;
  z-index:2;
}
.topbar::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.14),transparent);
  transform:translateX(-100%);
  animation:topbarShine 7s ease-in-out infinite;
  pointer-events:none;
}
@keyframes topbarShine{
  0%,70%{transform:translateX(-100%)}
  100%{transform:translateX(100%)}
}
.topbar .wrap{
  display:flex;
  justify-content:space-between;
  align-items:center;
  min-height:40px;
  flex-wrap:wrap;
  gap:6px 18px;
  padding-top:4px;
  padding-bottom:4px;
}
.topbar a{color:#ffe3e8}
.topbar a:hover{color:#fff}
.topbar time{font-variant-numeric:tabular-nums}

/* ============ 页头 ============ */
header.site{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--glass);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
header.site.scrolled{
  box-shadow:var(--shadow-md);
  border-bottom-color:transparent;
}

.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:68px;
  gap:16px;
}

.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:900;
  font-size:20px;
  color:var(--ink-strong);
  letter-spacing:-.02em;
  white-space:nowrap;
}
.logo:hover{text-decoration:none;color:var(--brand)}
.logo .mark{
  width:40px;
  height:40px;
  border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--accent) 60%,var(--accent-2));
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  font-weight:900;
  letter-spacing:-.02em;
  box-shadow:0 6px 18px var(--brand-glow);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.logo:hover .mark{
  transform:rotate(-6deg) scale(1.06);
  box-shadow:0 10px 26px var(--brand-glow);
}

nav.main ul{
  display:flex;
  gap:4px;
  list-style:none;
  margin:0;
  padding:0;
  flex-wrap:wrap;
  align-items:center;
}
nav.main a{
  color:var(--ink);
  font-size:14.5px;
  font-weight:600;
  padding:8px 12px;
  border-radius:var(--radius-pill);
  display:inline-block;
  position:relative;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
nav.main a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent-2));
  transform:translateX(-50%);
  transition:width var(--dur) var(--ease);
}
nav.main a:hover{
  color:var(--brand);
  background:var(--brand-soft);
  text-decoration:none;
  transform:translateY(-1px);
}
nav.main a:hover::after{width:40%}

.nav-tools{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}

.search-box{
  display:flex;
  align-items:center;
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  padding:4px 4px 4px 16px;
  background:var(--soft);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.search-box:focus-within{
  border-color:var(--brand);
  background:var(--bg-elev);
  box-shadow:0 0 0 4px var(--brand-glow);
}
.search-box input{
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  width:140px;
  color:var(--ink);
  font-family:inherit;
  padding:6px 0;
}
.search-box input::placeholder{color:var(--muted-2)}
.search-box button{
  border:0;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#fff;
  border-radius:var(--radius-pill);
  padding:7px 16px;
  font-size:13px;
  font-weight:700;
  cursor:pointer;
  font-family:inherit;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.search-box button:hover{
  transform:translateY(-1px);
  box-shadow:0 6px 16px var(--brand-glow);
  filter:brightness(1.06);
}
.search-box button:active{transform:translateY(0) scale(.97)}

.icon-btn{
  border:1px solid var(--line);
  background:var(--bg-elev);
  color:var(--ink);
  border-radius:var(--radius-pill);
  width:40px;
  height:40px;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  font-size:16px;
  line-height:1;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.icon-btn:hover{
  border-color:var(--brand);
  transform:translateY(-2px) rotate(4deg);
  box-shadow:var(--shadow-sm);
}
.icon-btn:active{transform:scale(.94)}

.menu-toggle{display:none}

/* ============ 面包屑 ============ */
.breadcrumb{
  font-size:13px;
  color:var(--muted);
  padding:16px 20px 0;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:2px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{margin:0 4px;color:var(--muted-2)}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(900px 480px at 82% 0%,rgba(255,90,114,.22),transparent 60%),
    radial-gradient(700px 420px at 10% 100%,rgba(255,154,90,.18),transparent 62%),
    linear-gradient(135deg,#fff7f8 0%,#ffffff 52%,#fffaf6 100%);
  border-bottom:1px solid var(--line);
  padding:52px 0 44px;
  isolation:isolate;
}
body.dark .hero{
  background:
    radial-gradient(900px 480px at 82% 0%,rgba(255,77,104,.18),transparent 60%),
    radial-gradient(700px 420px at 10% 100%,rgba(255,154,90,.12),transparent 62%),
    linear-gradient(135deg,#1b1216 0%,#0f1115 55%,#171319 100%);
}
.hero::before{
  content:"";
  position:absolute;
  width:520px;
  height:520px;
  right:-160px;
  top:-220px;
  border-radius:50%;
  background:conic-gradient(from 120deg,var(--brand),var(--accent-2),var(--accent),var(--brand));
  filter:blur(90px);
  opacity:.28;
  z-index:-1;
  animation:heroFloat 16s ease-in-out infinite alternate;
}
@keyframes heroFloat{
  0%{transform:translate3d(0,0,0) scale(1)}
  100%{transform:translate3d(-40px,50px,0) scale(1.12)}
}

.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:40px;
  align-items:center;
}

.hero h1{
  font-size:clamp(26px,3.4vw,38px);
  line-height:1.26;
  margin:0 0 16px;
  letter-spacing:-.025em;
}
.hero h1 strong{
  color:var(--brand);
  background:linear-gradient(120deg,var(--brand),var(--accent) 60%,var(--accent-2));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  position:relative;
}
.hero .lead{
  color:var(--muted);
  font-size:17px;
  margin:0 0 22px;
  max-width:640px;
}

.hero .cta{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:26px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 26px;
  border-radius:var(--radius-pill);
  font-weight:700;
  font-size:15px;
  font-family:inherit;
  border:1px solid transparent;
  cursor:pointer;
  position:relative;
  overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,transparent 20%,rgba(255,255,255,.42) 50%,transparent 80%);
  transform:translateX(-120%);
  transition:transform .7s var(--ease);
  pointer-events:none;
}
.btn:hover::after{transform:translateX(120%)}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--accent) 70%,var(--accent-2));
  color:#fff;
  box-shadow:0 10px 26px var(--brand-glow);
}
.btn-primary:hover{
  color:#fff;
  text-decoration:none;
  transform:translateY(-2px);
  box-shadow:0 16px 36px var(--brand-glow);
}
.btn-ghost{
  border-color:var(--line-strong);
  color:var(--ink);
  background:var(--glass);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  border-color:var(--brand);
  color:var(--brand);
  text-decoration:none;
  transform:translateY(-2px);
  box-shadow:var(--shadow-sm);
}
.btn:active{transform:translateY(0) scale(.98)}

.hero-facts{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom:22px;
}
.hero-facts > div{
  background:var(--glass);
  -webkit-backdrop-filter:blur(12px) saturate(150%);
  backdrop-filter:blur(12px) saturate(150%);
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  padding:14px 18px;
  min-width:118px;
  box-shadow:var(--shadow-sm);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.hero-facts > div:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:var(--brand);
}
.hero-facts .num{
  font-size:26px;
  font-weight:900;
  color:var(--brand);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.hero-facts .lbl{
  font-size:12.5px;
  color:var(--muted);
  margin-top:2px;
}

.anchor-nav{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:6px;
}
.anchor-nav a{
  font-size:13.5px;
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  padding:7px 15px;
  color:var(--ink);
  font-weight:600;
  transition:all var(--dur) var(--ease);
}
.anchor-nav a:hover{
  border-color:var(--brand);
  color:var(--brand);
  text-decoration:none;
  transform:translateY(-2px);
  box-shadow:0 8px 18px var(--brand-glow);
}

/* ============ 轮播 ============ */
.carousel{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--glass);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  backdrop-filter:blur(18px) saturate(160%);
  border:1px solid var(--glass-border);
  min-height:250px;
  box-shadow:var(--shadow-lg);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.carousel:hover{transform:translateY(-4px)}
.carousel::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(140deg,rgba(200,16,46,.08),transparent 45%,rgba(255,154,90,.1));
  pointer-events:none;
  z-index:1;
}
.slides{
  display:flex;
  transition:transform .55s var(--ease);
  will-change:transform;
}
.slide{
  min-width:100%;
  padding:30px 28px 42px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:12px;
  position:relative;
}
.slide h3{
  margin:0;
  font-size:19px;
  line-height:1.4;
  letter-spacing:-.01em;
}
.slide p{
  margin:0;
  color:var(--muted);
  font-size:14px;
  line-height:1.7;
}
.slide .tag{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  color:var(--brand);
  background:var(--brand-soft);
  border:1px solid rgba(200,16,46,.16);
  border-radius:var(--radius-pill);
  padding:4px 12px;
  width:fit-content;
  letter-spacing:.02em;
}
.dots{
  position:absolute;
  bottom:16px;
  left:0;
  right:0;
  display:flex;
  justify-content:center;
  gap:8px;
  z-index:2;
}
.dots button{
  width:9px;
  height:9px;
  border-radius:var(--radius-pill);
  border:0;
  background:var(--line-strong);
  cursor:pointer;
  padding:0;
  transition:width var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.dots button:hover{transform:scale(1.25)}
.dots button.active{
  width:26px;
  background:linear-gradient(90deg,var(--brand),var(--accent-2));
}

/* ============ 区块 ============ */
section.block{
  padding:64px 0;
  border-bottom:1px solid var(--line);
  position:relative;
  scroll-margin-top:86px;
}
section.block:nth-of-type(even){
  background:var(--soft);
}
section.block:nth-of-type(even)::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(700px 320px at 50% 0%,var(--brand-glow),transparent 70%);
  opacity:.35;
  pointer-events:none;
}

.sec-head{
  margin-bottom:32px;
  max-width:880px;
}
.sec-head .kicker{
  display:inline-block;
  color:var(--brand);
  font-weight:800;
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  background:var(--brand-soft);
  border:1px solid rgba(200,16,46,.14);
  margin-bottom:10px;
}
.sec-head h2{
  font-size:clamp(22px,2.6vw,30px);
  margin:0 0 12px;
  letter-spacing:-.02em;
  line-height:1.3;
}
.sec-head p{
  color:var(--muted);
  margin:0;
  font-size:15.5px;
  line-height:1.8;
}

/* ============ 网格 ============ */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ============ 卡片 ============ */
.card{
  background:var(--bg-elev);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--brand),var(--accent),var(--accent-2));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .45s var(--ease);
}
.card:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-md);
  border-color:var(--line-strong);
}
.card:hover::before{transform:scaleX(1)}
.card h3{
  margin:12px 0 8px;
  font-size:18px;
  letter-spacing:-.01em;
}
.card p{
  margin:0;
  color:var(--muted);
  font-size:14.5px;
  line-height:1.75;
}
.card .ico{
  width:48px;
  height:48px;
  border-radius:14px;
  background:linear-gradient(135deg,var(--brand-soft),rgba(255,154,90,.16));
  border:1px solid rgba(200,16,46,.12);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover .ico{
  transform:rotate(-6deg) scale(1.08);
  box-shadow:0 8px 20px var(--brand-glow);
}
.card ul{
  padding-left:20px;
  margin:0;
  color:var(--muted);
  font-size:14.5px;
}
.card ul li{margin-bottom:6px}

/* ============ 正文 ============ */
.prose{
  color:var(--ink);
}
.prose p{
  color:var(--ink);
  margin:0 0 16px;
  font-size:15.5px;
  line-height:1.85;
}
.prose h3{
  margin:26px 0 12px;
  font-size:20px;
  letter-spacing:-.015em;
  padding-left:14px;
  position:relative;
}
.prose h3::before{
  content:"";
  position:absolute;
  left:0;
  top:.18em;
  bottom:.18em;
  width:4px;
  border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--accent-2));
}
.prose h3:first-child{margin-top:0}
.prose h4{
  margin:18px 0 8px;
  font-size:17px;
  color:var(--brand-dark);
}
.prose ul{
  padding-left:22px;
  color:var(--ink);
  font-size:15.5px;
  line-height:1.85;
}
.prose li{margin-bottom:8px}
.prose strong{color:var(--ink-strong)}

/* ============ 时间线 ============ */
.timeline{
  list-style:none;
  padding:0 0 0 22px;
  margin:16px 0 0;
  border-left:3px solid var(--brand);
}
.timeline li{
  margin-bottom:20px;
  position:relative;
  font-size:15px;
  line-height:1.8;
  color:var(--ink);
}
.timeline li:last-child{margin-bottom:0}
.timeline li::before{
  content:"";
  position:absolute;
  left:-30px;
  top:7px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px var(--brand-soft);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.timeline li:hover::before{
  transform:scale(1.25);
  box-shadow:0 0 0 6px var(--brand-glow);
}
.timeline .yr{
  font-weight:800;
  color:var(--brand);
  margin-right:4px;
}

/* ============ 文章列表 ============ */
.article-item{
  display:flex;
  gap:20px;
  border-bottom:1px dashed var(--line);
  padding:22px 16px;
  border-radius:var(--radius-sm);
  transition:background-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.article-item:last-child{border-bottom:0}
.article-item:hover{
  background:var(--bg-elev);
  transform:translateX(4px);
  box-shadow:var(--shadow-sm);
}
.article-item .thumb{
  flex:0 0 132px;
  height:92px;
  border-radius:var(--radius-sm);
  overflow:hidden;
  background:var(--brand-soft);
  border:1px solid var(--line);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.article-item:hover .thumb{
  transform:scale(1.04);
  box-shadow:var(--shadow-sm);
}
.article-item .thumb svg{width:100%;height:100%;object-fit:cover}
.article-item h3{
  margin:0 0 6px;
  font-size:17px;
  letter-spacing:-.01em;
  transition:color var(--dur) var(--ease);
}
.article-item:hover h3{color:var(--brand)}
.article-item .meta{
  font-size:12.5px;
  color:var(--muted-2);
  margin-bottom:8px;
}
.article-item p{
  margin:0 0 8px;
  color:var(--muted);
  font-size:14px;
  line-height:1.75;
}
.article-item a{
  font-size:13.5px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:4px;
  transition:gap var(--dur) var(--ease);
}
.article-item a:hover{gap:8px;text-decoration:none}

/* ============ FAQ ============ */
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  margin-bottom:12px;
  background:var(--bg-elev);
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-item:hover{
  border-color:var(--line-strong);
  box-shadow:var(--shadow-sm);
}
.faq-item.open{
  border-color:var(--brand);
  box-shadow:0 8px 24px var(--brand-glow);
}
.faq-q{
  width:100%;
  text-align:left;
  background:none;
  border:0;
  padding:18px 20px;
  font-size:16px;
  font-weight:700;
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:14px;
  color:var(--ink-strong);
  font-family:inherit;
  line-height:1.55;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--brand);background:var(--brand-soft)}
.faq-item.open .faq-q{color:var(--brand)}
.faq-q .chev{
  flex-shrink:0;
  color:var(--brand);
  font-size:14px;
  transition:transform var(--dur) var(--ease);
}
.faq-item.open .chev{transform:rotate(180deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s var(--ease),padding .4s var(--ease);
  padding:0 20px;
  color:var(--muted);
  font-size:14.5px;
  line-height:1.8;
}
.faq-a p{margin:0}
.faq-item.open .faq-a{
  max-height:520px;
  padding:0 20px 18px;
}

/* ============ 步骤 ============ */
.steps{
  counter-reset:step;
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:6px;
}
.steps li{
  position:relative;
  padding:0 0 22px 62px;
  counter-increment:step;
  transition:transform var(--dur) var(--ease);
}
.steps li:hover{transform:translateX(4px)}
.steps li::before{
  content:counter(step);
  position:absolute;
  left:0;
  top:0;
  width:42px;
  height:42px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:900;
  font-size:16px;
  box-shadow:0 8px 20px var(--brand-glow);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.steps li:hover::before{
  transform:scale(1.1) rotate(-6deg);
  box-shadow:0 12px 28px var(--brand-glow);
}
.steps h4{
  margin:0 0 6px;
  font-size:16px;
  letter-spacing:-.01em;
}
.steps p{
  margin:0;
  color:var(--muted);
  font-size:14.5px;
  line-height:1.75;
}

/* ============ 引用 ============ */
.quote{
  background:var(--bg-elev);
  border-left:4px solid var(--brand);
  border-radius:var(--radius-sm);
  padding:20px 22px;
  margin-bottom:14px;
  box-shadow:var(--shadow-sm);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.quote:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
  border-left-color:var(--accent-2);
}
.quote p{
  margin:0 0 10px;
  color:var(--ink);
  font-size:15px;
  line-height:1.8;
}
.quote .who{
  font-size:13px;
  color:var(--muted-2);
  font-weight:600;
}

/* ============ 表格 ============ */
.info-table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  font-size:14.5px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--bg-elev);
  box-shadow:var(--shadow-sm);
}
.info-table th,
.info-table td{
  border-bottom:1px solid var(--line);
  padding:13px 16px;
  text-align:left;
  vertical-align:top;
  line-height:1.7;
}
.info-table tr:last-child th,
.info-table tr:last-child td{border-bottom:0}
.info-table th{
  background:var(--brand-soft);
  width:150px;
  color:var(--brand-dark);
  font-weight:700;
  white-space:nowrap;
}
.info-table td{color:var(--ink)}
.info-table tr{
  transition:background-color var(--dur) var(--ease);
}
.info-table tbody tr:hover td,
.info-table tbody tr:hover th{background:var(--soft)}

/* ============ 联系 ============ */
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  align-items:start;
}
.map-box{
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-elev);
  box-shadow:var(--shadow-sm);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.map-box:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}

/* ============ 徽标 ============ */
.badge{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  background:var(--brand-soft);
  color:var(--brand);
  border:1px solid rgba(200,16,46,.16);
  border-radius:var(--radius-pill);
  padding:3px 11px;
  margin-right:6px;
  margin-bottom:6px;
}

/* ============ 页脚 ============ */
footer.site{
  background:linear-gradient(180deg,#17191f,#111318);
  color:#c8ccd4;
  padding:56px 0 24px;
  font-size:14px;
  position:relative;
  overflow:hidden;
}
footer.site::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--accent-2),transparent);
  opacity:.7;
}
footer.site::after{
  content:"";
  position:absolute;
  width:520px;
  height:520px;
  right:-180px;
  bottom:-260px;
  border-radius:50%;
  background:radial-gradient(circle,var(--brand-glow),transparent 68%);
  pointer-events:none;
}
footer.site a{
  color:#e6e8ec;
  transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
footer.site a:hover{
  color:var(--accent-2);
  text-decoration:none;
  padding-left:4px;
}
footer.site h4{
  color:#fff;
  font-size:15px;
  margin:0 0 14px;
  letter-spacing:.01em;
  position:relative;
  padding-bottom:8px;
}
footer.site h4::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:26px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent-2));
}
footer.site ul{
  list-style:none;
  padding:0;
  margin:0;
}
footer.site li{margin-bottom:9px}
footer.site p{
  color:#a9aeb9;
  line-height:1.8;
  margin:0 0 12px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:30px;
  margin-bottom:34px;
  position:relative;
  z-index:1;
}
.foot-bottom{
  border-top:1px solid #2a2d36;
  padding-top:20px;
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8f95a1;
  position:relative;
  z-index:1;
}

/* ============ 返回顶部 ============ */
#toTop{
  position:fixed;
  right:22px;
  bottom:22px;
  width:48px;
  height:48px;
  border-radius:50%;
  border:0;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#fff;
  font-size:19px;
  cursor:pointer;
  opacity:0;
  pointer-events:none;
  transform:translateY(14px) scale(.9);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  z-index:90;
  box-shadow:0 10px 26px var(--brand-glow);
}
#toTop.show{
  opacity:1;
  pointer-events:auto;
  transform:translateY(0) scale(1);
}
#toTop:hover{
  transform:translateY(-4px) scale(1.06);
  box-shadow:0 16px 34px var(--brand-glow);
}
#toTop:active{transform:scale(.94)}

/* ============ 滚动动画 ============ */
.reveal{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .7s var(--ease),transform .7s var(--ease);
  will-change:opacity,transform;
}
.reveal.visible{
  opacity:1;
  transform:none;
}
.reveal:nth-child(2){transition-delay:.06s}
.reveal:nth-child(3){transition-delay:.12s}
.reveal:nth-child(4){transition-delay:.18s}
.reveal:nth-child(5){transition-delay:.24s}
.reveal:nth-child(6){transition-delay:.3s}

/* ============ 暗色补充 ============ */
body.dark header.site{
  background:rgba(15,17,21,.82);
}
body.dark .card,
body.dark .faq-item,
body.dark .map-box,
body.dark .quote,
body.dark .info-table{
  background:var(--bg-elev);
}
body.dark .btn-ghost{
  background:rgba(24,27,33,.7);
  color:var(--ink);
}
body.dark .search-box{
  background:var(--soft);
}
body.dark .search-box input{color:var(--ink)}
body.dark .icon-btn{background:var(--bg-elev);color:var(--ink)}
body.dark .prose p,
body.dark .prose ul,
body.dark .prose li,
body.dark .quote p,
body.dark .timeline li{color:#d3d7de}
body.dark .info-table th{background:#2a1218;color:var(--brand-dark)}
body.dark .anchor-nav a{
  background:rgba(24,27,33,.7);
  color:var(--ink);
}
body.dark .hero-facts > div,
body.dark .carousel{
  background:rgba(24,27,33,.66);
  border-color:var(--glass-border);
}
body.dark nav.main.open{
  background:var(--bg-elev);
  border-color:var(--line);
}
body.dark .slide .tag{
  background:var(--brand-soft);
  border-color:rgba(255,77,104,.24);
}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .nav{gap:12px}
  nav.main ul{gap:0}
  nav.main a{padding:7px 9px;font-size:14px}
  .search-box input{width:110px}
}

@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero{padding:40px 0 36px}
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .contact-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  nav.main ul{gap:0}
  nav.main a{font-size:13.5px;padding:6px 8px}
}

@media (max-width:820px){
  nav.main{
    display:none;
  }
  nav.main.open{
    display:block;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    background:var(--bg-elev);
    border-bottom:1px solid var(--line);
    padding:14px 20px 18px;
    box-shadow:var(--shadow-md);
    animation:navDrop .28s var(--ease);
  }
  @keyframes navDrop{
    from{opacity:0;transform:translateY(-8px)}
    to{opacity:1;transform:none}
  }
  nav.main.open ul{
    flex-direction:column;
    gap:4px;
    align-items:stretch;
  }
  nav.main.open a{
    display:block;
    padding:11px 14px;
    font-size:15px;
    border-radius:var(--radius-sm);
  }
  .menu-toggle{display:flex}
  .search-box input{width:120px}
}

@media (max-width:680px){
  html{scroll-padding-top:76px}
  body{font-size:15.5px}
  .wrap{padding:0 16px}
  .topbar{font-size:12px}
  .topbar .wrap{min-height:36px;justify-content:center;text-align:center}
  .nav{min-height:62px}
  .logo{font-size:18px}
  .logo .mark{width:36px;height:36px;border-radius:10px;font-size:15px}
  .search-box{padding:3px 3px 3px 12px}
  .search-box input{width:92px;font-size:13px}
  .search-box button{padding:6px 12px;font-size:12.5px}
  .icon-btn{width:38px;height:38px}
  .hero{padding:32px 0 30px}
  .hero h1{font-size:26px}
  .hero .lead{font-size:15.5px}
  .hero-facts{gap:10px}
  .hero-facts > div{flex:1 1 calc(50% - 10px);min-width:0;padding:12px 14px}
  .hero-facts .num{font-size:22px}
  .carousel{min-height:230px}
  .slide{padding:24px 20px 40px}
  .slide h3{font-size:17px}
  section.block{padding:48px 0}
  .sec-head{margin-bottom:24px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .grid{gap:16px}
  .card{padding:20px}
  .article-item{
    flex-direction:column;
    gap:14px;
    padding:18px 12px;
  }
  .article-item .thumb{
    width:100%;
    height:150px;
    flex:0 0 auto;
  }
  .article-item:hover{transform:none}
  .info-table th{width:110px;white-space:normal;padding:11px 12px}
  .info-table td{padding:11px 12px}
  .steps li{padding-left:54px}
  .steps li::before{width:38px;height:38px;font-size:15px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column;gap:8px;text-align:left}
  #toTop{right:16px;bottom:16px;width:44px;height:44px}
  .faq-q{padding:15px 16px;font-size:15px}
  .faq-item.open .faq-a{padding:0 16px 15px}
}

@media (max-width:400px){
  .search-box input{width:72px}
  .hero-facts > div{flex:1 1 100%}
  .btn{padding:11px 20px;font-size:14px}
}

/* ============ 动效偏好 ============ */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none}
}

/* ============ 打印 ============ */
@media print{
  .topbar,header.site,#toTop,footer.site,.carousel,.anchor-nav,.search-box,.icon-btn{display:none !important}
  body{background:#fff;color:#000}
  body::before{display:none}
  section.block{padding:18px 0;border-bottom:1px solid #ddd}
  .card,.faq-item,.quote,.info-table{box-shadow:none}
  a{color:#000;text-decoration:underline}
}