@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:wght@300;400;500;600;700&family=Varela+Round&display=swap');

:root{
  --red:#ff0000;
  --violet:#8b00ff;
  --ink:#261717;
  --text:#fdf6f6;
  --muted:#dcc9cd;
  --glass:rgba(255,255,255,.09);
  --glass-2:rgba(255,255,255,.16);
  --line:rgba(255,255,255,.18);
  --radius:10px;
  --blur:blur(16px);
  --shadow:0 22px 60px rgba(0,0,0,.42);
}

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

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

body{
  margin:0;
  min-height:100vh;
  font-family:"Nunito Sans","Varela Round","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--ink);
  background-image:
    radial-gradient(62vw 48vw at 10% -6%, rgba(255,0,0,.42), rgba(255,0,0,0) 62%),
    radial-gradient(56vw 46vw at 92% 6%, rgba(139,0,255,.42), rgba(139,0,255,0) 60%),
    radial-gradient(82vw 62vw at 50% 112%, rgba(139,0,255,.28), rgba(139,0,255,0) 68%),
    linear-gradient(180deg,#2c1a1a 0%,#1d1212 55%,#261717 100%);
  background-attachment:fixed;
  background-repeat:no-repeat;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block}
a{color:inherit}

/* ---------- 顶部两行导航 ---------- */
.top{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(38,23,23,.62);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  box-shadow:0 10px 30px rgba(0,0,0,.28);
}

.top-bar{
  max-width:1140px;
  margin:0 auto;
  padding:10px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  text-decoration:none;
  font-family:"Varela Round","Nunito Sans",system-ui,sans-serif;
  font-size:21px;
  letter-spacing:.5px;
  color:#fff;
}

.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:50%;
  font-size:17px;
  color:#fff;
  background:linear-gradient(135deg,var(--red),var(--violet));
  border:1px solid rgba(255,255,255,.35);
  box-shadow:0 0 20px rgba(255,0,0,.45);
}

.brand-name{
  background:linear-gradient(100deg,#fff,#ffd9d9 60%,#e8d0ff);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.top-contact{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:40px;
  padding:8px 18px;
  border-radius:999px;
  text-decoration:none;
  font-size:16px;
  color:#fff;
  background:linear-gradient(120deg,rgba(255,0,0,.55),rgba(139,0,255,.55));
  border:1px solid rgba(255,255,255,.3);
  -webkit-backdrop-filter:var(--blur);
  backdrop-filter:var(--blur);
}
.top-contact:hover,.top-contact:focus-visible{
  background:linear-gradient(120deg,rgba(255,0,0,.8),rgba(139,0,255,.8));
}

.top-nav{
  border-top:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.05);
}
.top-nav ol{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:4px;
  margin:0 auto;
  max-width:1140px;
  padding:6px 12px;
}
.top-nav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:6px 13px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:16px;
  text-decoration:none;
  color:var(--text);
}
.top-nav a:hover,.top-nav a:focus-visible{
  background:var(--glass-2);
  border-color:var(--line);
}

/* ---------- 主视觉 ---------- */
main{display:block}

.hero{
  max-width:1140px;
  margin:0 auto;
  padding:30px 18px 26px;
  min-height:45vh;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.12fr);
  align-items:center;
  gap:28px;
}

.hero-media{
  position:relative;
  aspect-ratio:16/11;
  border-radius:16px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.28);
  background:linear-gradient(135deg,rgba(255,0,0,.5),rgba(139,0,255,.5));
  -webkit-backdrop-filter:var(--blur);
  backdrop-filter:var(--blur);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.35);
}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(150deg,rgba(255,255,255,.35),rgba(255,255,255,0) 55%);
  pointer-events:none;
}
.hero-img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.orb{
  position:absolute;
  inset:16%;
  border-radius:50%;
  background:radial-gradient(circle at 34% 30%,rgba(255,255,255,.92),rgba(255,0,0,.55) 42%,rgba(139,0,255,.35) 68%,rgba(139,0,255,0) 76%);
  filter:blur(1px);
}

.hero-copy{text-align:center}
.hero-copy h1{
  margin:0;
  font-size:clamp(28px,4.6vw,46px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:.4px;
  background:linear-gradient(118deg,#ffffff,#ffd8d8 52%,#e6ccff);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-shadow:0 0 40px rgba(255,0,0,.18);
}

.slash{
  height:56px;
  max-width:100%;
  background:linear-gradient(90deg,rgba(255,0,0,.85),rgba(139,0,255,.85));
  clip-path:polygon(0 0,100% 42%,100% 100%,0 58%);
  opacity:.85;
}

/* ---------- 内容区 ---------- */
.wrap{
  max-width:1140px;
  margin:0 auto;
  padding:34px 18px 64px;
  display:grid;
  grid-template-columns:232px minmax(0,1fr);
  gap:26px;
  align-items:start;
}

.side{
  position:sticky;
  top:150px;
  padding:16px 14px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  -webkit-backdrop-filter:var(--blur);
  backdrop-filter:var(--blur);
  box-shadow:0 14px 34px rgba(0,0,0,.28);
}
.side-title{
  margin:0 0 10px;
  font-size:16px;
  letter-spacing:3px;
  color:var(--muted);
}
.side-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:2px;
}
.side-list a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:6px 10px;
  border-radius:8px;
  font-size:16px;
  text-decoration:none;
  color:var(--text);
  border-left:2px solid transparent;
}
.side-list a:hover,.side-list a:focus-visible{
  background:var(--glass-2);
  border-left-color:var(--red);
}

.board{
  min-width:0;
  padding:24px 22px 30px;
  border-radius:var(--radius);
  background:rgba(255,255,255,.07);
  border:1px solid var(--line);
  -webkit-backdrop-filter:var(--blur);
  backdrop-filter:var(--blur);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.22);
}

.board-head{margin-bottom:14px}
.board-head h2{
  margin:0 0 8px;
  font-size:clamp(21px,3vw,29px);
  line-height:1.35;
  letter-spacing:.3px;
}
.subtitle{
  margin:0;
  font-size:16px;
  color:var(--muted);
}

/* ---------- 正文 ---------- */
.prose{font-size:17px;overflow-wrap:break-word}
.prose > :first-child{margin-top:0}
.prose p{margin:0 0 1.05em}
.prose h2,.prose h3{
  line-height:1.4;
  margin:1.5em 0 .55em;
  font-weight:700;
}
.prose h2{font-size:clamp(20px,2.6vw,26px)}
.prose h3{font-size:19px;color:#ffe3e3}
.prose ul,.prose ol{padding-left:1.35em;margin:0 0 1.1em}
.prose li{margin:.35em 0}
.prose a{color:#ff9d9d;text-underline-offset:3px}
.prose a:hover{color:#ffd0d0}
.prose strong{color:#fff}
.prose time{font-size:16px;color:var(--muted)}
.prose blockquote{
  margin:1.2em 0;
  padding:12px 16px;
  border-left:3px solid var(--red);
  background:rgba(255,255,255,.06);
  border-radius:0 var(--radius) var(--radius) 0;
  color:#f4e7e7;
}
.prose img{border-radius:var(--radius);margin:1em 0}
.prose table{width:100%;border-collapse:collapse;margin:1em 0;font-size:16px}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.prose article[id]{scroll-margin-top:160px}
.prose article + article{
  margin-top:34px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.14);
}

/* ---------- 页脚 ---------- */
.foot{
  margin-top:30px;
  border-top:1px solid var(--line);
  background:rgba(26,15,15,.6);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}

.foot-cta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  max-width:1140px;
  margin:0 auto;
  padding:36px 18px;
  border-bottom:1px solid rgba(255,255,255,.12);
  background:linear-gradient(120deg,rgba(255,0,0,.24),rgba(139,0,255,.24));
  -webkit-backdrop-filter:var(--blur);
  backdrop-filter:var(--blur);
}
.cta-text{
  margin:0;
  font-family:"Varela Round","Nunito Sans",system-ui,sans-serif;
  font-size:clamp(22px,4vw,34px);
  line-height:1.3;
  letter-spacing:1px;
}
.cta-btn{
  display:inline-flex;
  align-items:center;
  min-height:46px;
  padding:10px 26px;
  border-radius:999px;
  background:#fff;
  color:var(--ink);
  font-weight:700;
  font-size:16px;
  text-decoration:none;
  border:1px solid rgba(255,255,255,.7);
  box-shadow:0 10px 26px rgba(255,0,0,.3);
}
.cta-btn:hover{background:#ffe9e9}

.foot-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 26px;
  max-width:1140px;
  margin:0 auto;
  padding:18px;
}
.foot-brand a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-family:"Varela Round","Nunito Sans",system-ui,sans-serif;
  font-size:17px;
  letter-spacing:.5px;
  text-decoration:none;
  color:#fff;
}
.foot-nav ol{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:2px 6px;
  margin:0;
  padding:0;
}
.foot-nav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:6px 10px;
  border-radius:8px;
  font-size:16px;
  text-decoration:none;
  color:var(--muted);
}
.foot-nav a:hover,.foot-nav a:focus-visible{background:var(--glass-2);color:#fff}
.foot-legal{font-size:16px;color:var(--muted)}

/* ---------- 滚动显现 ---------- */
.js .rv{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .6s ease,transform .6s ease;
}
.js .rv.in{opacity:1;transform:none}
.js .prose > .rv:nth-child(2){transition-delay:.05s}
.js .prose > .rv:nth-child(3){transition-delay:.1s}
.js .prose > .rv:nth-child(4){transition-delay:.15s}
.js .prose > .rv:nth-child(5){transition-delay:.2s}
.js .side-list li:nth-child(2) a{transition-delay:.04s}
.js .side-list li:nth-child(3) a{transition-delay:.08s}
.js .side-list li:nth-child(4) a{transition-delay:.12s}
.js .side-list li:nth-child(5) a{transition-delay:.16s}
.js .side-list li:nth-child(6) a{transition-delay:.2s}
.js .side-list li:nth-child(7) a{transition-delay:.24s}

/* ---------- 响应式 ---------- */
@media (max-width:880px){
  .top-nav{overflow-x:auto;scrollbar-width:none}
  .top-nav::-webkit-scrollbar{display:none}
  .top-nav ol{flex-wrap:nowrap;width:max-content;padding:6px 14px}
  .top-nav a{white-space:nowrap}

  .hero{
    grid-template-columns:1fr;
    min-height:0;
    padding:20px 18px 22px;
    gap:18px;
  }
  .hero-media{aspect-ratio:16/9}
  .hero-copy h1{font-size:clamp(26px,7.2vw,34px)}

  .slash{height:40px}

  .wrap{
    grid-template-columns:1fr;
    padding:20px 16px 48px;
    gap:20px;
  }
  .side{position:static;order:2}
  .board{order:1;padding:20px 16px 26px}
  .prose article[id]{scroll-margin-top:130px}

  .foot-cta{flex-direction:column;align-items:flex-start;padding:28px 16px}
  .foot-row{flex-direction:column;align-items:flex-start;padding:16px}
  .foot-nav ol{gap:2px}
}

@media (max-width:420px){
  body{font-size:16px}
  .brand{font-size:19px}
  .top-bar{padding:8px 14px}
  .top-contact{padding:8px 14px}
  .foot-nav a{padding:6px 8px}
}

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

button[aria-expanded]{min-width:44px;min-height:44px}