@import url('https://fonts.googleapis.com/css2?family=Anton&family=Epilogue:wght@400;500;600;700&display=swap');

:root{
  --red:#ff0000;
  --violet:#8b00ff;
  --ink:#261717;
  --cream:#f6ecec;
  --muted:#cbb6b6;
  --glass:rgba(255,255,255,.10);
  --glass-2:rgba(255,255,255,.19);
  --line:rgba(255,255,255,.2);
  --panel:rgba(38,23,23,.62);
  --r:10px;
  --top:66px;
  --rail:60px;
}

*{box-sizing:border-box}

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

body{
  margin:0;
  font-family:Epilogue,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.66;
  color:var(--cream);
  background-color:#1a0e0e;
  background-image:
    radial-gradient(62vw 52vw at 6% -10%, rgba(255,0,0,.55), transparent 66%),
    radial-gradient(58vw 48vw at 96% 10%, rgba(139,0,255,.52), transparent 64%),
    radial-gradient(72vw 62vw at 46% 108%, rgba(139,0,255,.3), transparent 72%),
    linear-gradient(168deg,#1c0f0f 0%,#261717 46%,#150b15 100%);
  background-attachment:fixed;
}

img{max-width:100%}

a{color:inherit}

h2,h3{font-weight:700}

/* ---------- 顶栏 ---------- */
.top{
  position:sticky;
  top:0;
  z-index:40;
  display:flex;
  align-items:center;
  gap:10px;
  min-height:var(--top);
  padding:8px 12px;
  background:rgba(38,23,23,.55);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
}

.brand{
  flex:none;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  text-decoration:none;
}

.mark-img{
  display:block;
  width:36px;
  height:36px;
  border-radius:8px;
  object-fit:cover;
  box-shadow:0 4px 14px rgba(255,0,0,.4);
}

.mark-txt{
  display:block;
  max-width:6em;
  font-family:Anton,Epilogue,"PingFang SC",sans-serif;
  font-size:15px;
  line-height:1.12;
  letter-spacing:.04em;
  color:#fff;
}

.menu{
  flex:1 1 auto;
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
}
.menu::-webkit-scrollbar{display:none}

.menu ul{
  display:flex;
  gap:4px;
  margin:0;
  padding:0;
  list-style:none;
}

.menu a{
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:44px;
  padding:0 12px;
  border-radius:999px;
  font-size:16px;
  font-weight:600;
  white-space:nowrap;
  text-decoration:none;
  color:var(--cream);
}
.menu a:hover,
.menu a:focus-visible{background:var(--glass-2)}

.dot{
  flex:none;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--red);
  box-shadow:0 0 9px var(--red);
}

.cta{
  flex:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 16px;
  border-radius:999px;
  font-size:16px;
  font-weight:700;
  text-decoration:none;
  color:#fff;
  background:linear-gradient(120deg,var(--red),var(--violet));
  box-shadow:0 8px 22px -6px rgba(255,0,0,.65);
}
.cta:hover{filter:brightness(1.08)}

/* ---------- 粘性锚点条 ---------- */
.rail{
  position:sticky;
  top:var(--top);
  z-index:30;
  padding:8px 12px;
  background:rgba(20,12,20,.52);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}

.rail ol{
  display:flex;
  gap:6px;
  margin:0;
  padding:0;
  list-style:none;
  overflow-x:auto;
  scrollbar-width:none;
}
.rail ol::-webkit-scrollbar{display:none}

.rail a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:0 12px;
  border-radius:8px;
  border:1px solid var(--line);
  background:var(--glass);
  font-size:16px;
  white-space:nowrap;
  text-decoration:none;
  color:var(--cream);
}
.rail a:hover{background:var(--glass-2)}
.rail a.is-on{
  background:rgba(255,0,0,.3);
  border-color:rgba(255,0,0,.6);
}
.rail b{
  font-family:Anton,Epilogue,sans-serif;
  font-weight:400;
  font-size:14px;
  letter-spacing:.06em;
  color:var(--red);
}

/* ---------- 主体 ---------- */
.main{
  display:block;
  max-width:1180px;
  margin:0 auto;
  padding:0 16px 40px;
}

.hero{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:26px;
  align-items:center;
  min-height:calc(100vh - var(--top) - var(--rail) - 24px);
  padding:26px 0 34px;
}

.hero-fig{
  position:relative;
  display:flex;
  align-items:flex-end;
  justify-content:center;
  min-height:330px;
  margin:0;
  padding:0;
  overflow:hidden;
  border-radius:16px;
  background:linear-gradient(155deg,rgba(255,0,0,.42),rgba(139,0,255,.34) 70%,rgba(38,23,23,.6));
  box-shadow:0 34px 64px -26px rgba(0,0,0,.85), inset 0 0 0 1px var(--line);
}

.hero-fig.is-blank::before{
  content:"";
  position:absolute;
  inset:-30% -10% auto auto;
  width:70%;
  height:70%;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.34),transparent 68%);
}

.hero-img{
  position:absolute;
  inset:0;
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

.hero-num{
  position:relative;
  font-family:Anton,Epilogue,sans-serif;
  font-size:clamp(96px,15vw,180px);
  line-height:.78;
  letter-spacing:-.02em;
  color:rgba(255,255,255,.34);
  text-shadow:0 10px 34px rgba(38,23,23,.6);
  padding-bottom:6px;
}

.hero-copy{text-align:right}

.hero-copy h1{
  margin:0 0 16px;
  font-family:Anton,Epilogue,"PingFang SC",sans-serif;
  font-weight:400;
  font-size:clamp(30px,4.6vw,58px);
  line-height:1.16;
  letter-spacing:.01em;
  text-shadow:0 8px 40px rgba(255,0,0,.4);
}

.lede{
  max-width:44ch;
  margin:0 0 0 auto;
  font-size:17px;
  color:var(--muted);
}

/* ---------- 正文 + 侧栏 ---------- */
.core{
  display:grid;
  grid-template-columns:minmax(0,1fr) 292px;
  gap:26px;
  align-items:start;
}

.core-main{
  display:grid;
  gap:18px;
  min-width:0;
}

.core-main > section{
  padding:22px 20px;
  border-radius:var(--r);
  background:var(--panel);
  -webkit-backdrop-filter:blur(15px);
  backdrop-filter:blur(15px);
  box-shadow:0 26px 48px -30px rgba(0,0,0,.95);
  scroll-margin-top:calc(var(--top) + var(--rail) + 18px);
  animation:rise .55s cubic-bezier(.22,.7,.3,1) both;
}

.core-main > section:nth-child(2){animation-delay:.05s}
.core-main > section:nth-child(3){animation-delay:.1s}
.core-main > section:nth-child(4){animation-delay:.15s}
.core-main > section:nth-child(5){animation-delay:.2s}
.core-main > section:nth-child(6){animation-delay:.25s}
.core-main > section:nth-child(7){animation-delay:.3s}

@keyframes rise{
  from{opacity:0;transform:translateY(16px)}
  to{opacity:1;transform:none}
}

.core-main h2{
  margin:0 0 10px;
  font-family:Anton,Epilogue,"PingFang SC",sans-serif;
  font-weight:400;
  font-size:clamp(21px,2.6vw,28px);
  line-height:1.26;
  letter-spacing:.02em;
}

.core-main h3{
  margin:20px 0 8px;
  font-size:18px;
  color:#fff;
}

.core-main p{margin:0 0 12px;color:#f1e5e5}
.core-main ul,.core-main ol{padding-left:1.25em;margin:0 0 14px}
.core-main li{margin:6px 0}
.core-main a{color:#ffd7d7}
.core-main img{border-radius:var(--r)}

.core-main hr{
  height:1px;
  margin:12px 0 16px;
  border:0;
  background:linear-gradient(90deg,rgba(255,0,0,.75),rgba(139,0,255,.55),transparent);
}

.core-main figure{margin:14px 0}
.core-main blockquote{
  margin:14px 0;
  padding:12px 16px;
  border-left:3px solid var(--violet);
  background:rgba(139,0,255,.14);
  border-radius:0 var(--r) var(--r) 0;
}

.side{
  position:sticky;
  top:calc(var(--top) + var(--rail) + 18px);
  padding:16px;
  border-radius:var(--r);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(15px);
  backdrop-filter:blur(15px);
}

.side h2{
  margin:0 0 10px;
  font-size:17px;
  letter-spacing:.05em;
}

.side hr{
  height:2px;
  margin:0 0 12px;
  border:0;
  background:linear-gradient(90deg,var(--red),var(--violet));
}

.side-list{
  display:grid;
  gap:3px;
  margin:0;
  padding:0;
  list-style:none;
}

.side-list a{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:40px;
  padding:0 8px;
  border-radius:8px;
  font-size:16px;
  text-decoration:none;
  color:var(--cream);
}
.side-list a:hover,
.side-list a.is-on{background:var(--glass-2)}

.side-list b{
  font-family:Anton,Epilogue,sans-serif;
  font-weight:400;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--violet);
}

/* ---------- 页脚 ---------- */
.foot{
  margin-top:54px;
  border-top:1px solid var(--line);
  background:rgba(20,12,20,.58);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
}

.foot-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1fr 1.1fr;
  gap:22px;
  align-items:start;
  max-width:1180px;
  margin:0 auto;
  padding:34px 16px 22px;
}

.fbrand .fname{
  margin:10px 0 0;
  font-family:Anton,Epilogue,"PingFang SC",sans-serif;
  font-size:15px;
  letter-spacing:.06em;
  color:#fff;
}

.flogo{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  text-decoration:none;
}

.fnav{grid-column:span 2}

.fnav dl{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 18px;
  margin:0;
}

.fnav dt{margin:0}
.fnav dd{margin:0;height:8px}

.fnav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:16px;
  text-decoration:none;
  color:var(--cream);
}
.fnav a:hover{color:#fff;text-decoration:underline}

.fback a{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:96px;
  padding:16px;
  border-radius:12px;
  font-family:Anton,Epilogue,"PingFang SC",sans-serif;
  font-size:20px;
  letter-spacing:.08em;
  text-align:center;
  text-decoration:none;
  color:#fff;
  background:linear-gradient(135deg,var(--red),var(--violet));
  box-shadow:0 16px 38px -16px rgba(255,0,0,.85);
}
.fback a:hover{filter:brightness(1.08)}

.foot-bottom{
  border-top:1px solid var(--line);
  padding:16px 16px 26px;
  text-align:center;
}
.foot-bottom p{margin:0;font-size:16px;color:var(--muted)}

/* ---------- 移动端 ---------- */
@media (max-width:820px){
  :root{--top:62px;--rail:56px}

  .hero{
    grid-template-columns:1fr;
    gap:16px;
    min-height:0;
    padding:18px 0 24px;
  }
  .hero-copy{order:-1;text-align:left}
  .lede{margin:0;max-width:none}
  .hero-fig{min-height:230px}
  .hero-num{font-size:clamp(88px,26vw,140px)}

  .core{grid-template-columns:1fr;gap:18px}
  .side{position:static;order:2}

  .foot-grid{grid-template-columns:1fr 1fr;gap:16px}
  .fbrand{order:1}
  .fback{order:2}
  .fnav{order:3;grid-column:1 / -1}
  .fback a{min-height:72px;font-size:18px}
}

@media (max-width:420px){
  body{font-size:16px}
  .mark-txt{font-size:13px;max-width:4.4em}
  .cta{padding:0 12px}
  .core-main > section{padding:18px 15px}
}

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

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