@import url('https://fonts.googleapis.com/css2?family=Cormorant:wght@400;500;600;700&family=Montserrat:wght@300;400;500;600;700&display=swap');

:root{
  --ink:#261717;
  --ink-soft:#33201f;
  --red:#ff0000;
  --pink:#ff1493;
  --paper:#f9efec;
  --dim:rgba(249,239,236,.66);
  --faint:rgba(249,239,236,.42);
  --line:rgba(249,239,236,.14);
  --pad:clamp(18px,4.4vw,44px);
  --serif:'Cormorant','Songti SC','Noto Serif SC',Georgia,serif;
  --sans:'Montserrat','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
}

*{box-sizing:border-box}

html{
  background:var(--ink);
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  min-height:100vh;
  color:var(--paper);
  background:transparent;
  font-family:var(--sans);
  font-size:17px;
  font-weight:400;
  line-height:1.8;
  letter-spacing:.012em;
  overflow-x:hidden;
  position:relative;
}

body::before{
  content:"";
  position:fixed;
  inset:-25vmax;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(40% 34% at 18% 20%, rgba(255,0,0,.55), rgba(255,0,0,0) 68%),
    radial-gradient(46% 40% at 84% 12%, rgba(255,20,147,.5), rgba(255,20,147,0) 70%),
    radial-gradient(58% 46% at 62% 88%, rgba(255,20,147,.32), rgba(255,20,147,0) 72%),
    conic-gradient(from 205deg at 50% 50%, rgba(255,0,0,.3), rgba(255,20,147,.24), rgba(96,20,48,.28), rgba(255,0,0,.3));
  background-size:200% 200%,200% 200%,200% 200%,160% 160%;
  filter:blur(34px) saturate(1.22);
  animation:auroraFlow 12s ease-in-out infinite alternate;
}

@keyframes auroraFlow{
  0%{background-position:0% 8%,100% 0%,42% 100%,0% 0%;transform:translate3d(0,0,0) scale(1)}
  50%{background-position:28% 38%,62% 26%,70% 58%,38% 58%;transform:translate3d(2%,-2%,0) scale(1.05)}
  100%{background-position:58% 78%,22% 66%,18% 22%,78% 30%;transform:translate3d(-2%,2%,0) scale(1.02)}
}

a{color:var(--pink)}
a:focus-visible,
button:focus-visible{outline:2px solid var(--paper);outline-offset:3px}

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

.skip{
  position:fixed;
  top:10px;
  left:10px;
  z-index:99;
  transform:translateY(-180%);
  background:var(--paper);
  color:var(--ink);
  padding:10px 18px;
  border-radius:999px;
  text-decoration:none;
  font-size:16px;
  transition:transform .22s ease;
}
.skip:focus{transform:none}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(38,23,23,.84);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:padding .3s ease, box-shadow .3s ease;
}
.topbar.tight{box-shadow:0 14px 40px rgba(0,0,0,.45)}

.ticker{
  margin:0;
  padding:9px var(--pad) 7px;
  text-align:center;
  font-size:14px;
  font-weight:300;
  letter-spacing:.44em;
  text-indent:.44em;
  color:rgba(249,239,236,.74);
  border-bottom:1px solid rgba(249,239,236,.08);
  background:linear-gradient(90deg,rgba(255,0,0,.22),transparent 42%,transparent 58%,rgba(255,20,147,.22));
}

.nav{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:10px;
  max-width:1320px;
  margin:0 auto;
  padding:10px var(--pad);
}

.nav ul{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
}
.nav-b{justify-content:flex-end}

.nav ul a{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(249,239,236,.05);
  color:var(--paper);
  font-size:16px;
  font-weight:400;
  text-decoration:none;
  letter-spacing:.03em;
  transition:background .25s ease, border-color .25s ease, color .25s ease, transform .25s ease;
}
.nav ul a:hover{
  color:#fff;
  border-color:transparent;
  background:linear-gradient(100deg,var(--red),var(--pink));
  transform:translateY(-1px);
}

.brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  padding:0 14px;
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(19px,2.2vw,27px);
  letter-spacing:.16em;
  text-indent:.16em;
  white-space:nowrap;
  color:var(--paper);
  text-decoration:none;
  text-shadow:0 0 26px rgba(255,20,147,.55);
}

/* ---------- 主视觉 ---------- */
.hero{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,318px);
  align-items:center;
  gap:clamp(22px,4vw,52px);
  min-height:70vh;
  padding:clamp(52px,8vw,104px) var(--pad);
  overflow:hidden;
}

.hero-media{
  position:absolute;
  inset:0;
  margin:0;
  z-index:0;
  background:
    radial-gradient(70% 70% at 80% 18%, rgba(255,20,147,.5), rgba(255,20,147,0) 70%),
    linear-gradient(120deg, #3a1c1c, #24130f 60%, #3d1420);
}
.hero-img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.58;
  filter:saturate(1.1);
}
.hero-veil{
  position:absolute;
  inset:0;
  background:
    linear-gradient(100deg, rgba(38,23,23,.96) 6%, rgba(38,23,23,.62) 48%, rgba(38,23,23,.24) 100%),
    radial-gradient(58% 60% at 88% 82%, rgba(255,0,0,.32), rgba(255,0,0,0) 72%);
}

.hero-copy{position:relative;z-index:1;max-width:44ch}

.hero-copy h1{
  margin:0 0 18px;
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(31px,5.1vw,60px);
  line-height:1.14;
  letter-spacing:.03em;
  background:linear-gradient(96deg,#fff 12%,#ffd9e8 42%,var(--pink) 78%,var(--red));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-shadow:0 0 40px rgba(255,0,0,.28);
}

.hero-desc{
  margin:0 0 28px;
  color:rgba(249,239,236,.8);
  font-size:17px;
  line-height:1.85;
  max-width:40ch;
}

.cta{
  display:inline-flex;
  align-items:center;
  min-height:50px;
  padding:0 30px;
  border-radius:999px;
  background:linear-gradient(100deg,var(--red),var(--pink));
  color:#fff;
  font-size:17px;
  letter-spacing:.1em;
  text-decoration:none;
  box-shadow:0 16px 40px rgba(255,0,0,.32);
  transition:transform .26s ease, box-shadow .26s ease;
}
.cta:hover{transform:translateY(-2px);box-shadow:0 22px 52px rgba(255,20,147,.42)}

.hero-aside{
  position:relative;
  z-index:1;
  padding:24px 22px;
  border:1px solid rgba(255,255,255,.2);
  background:rgba(38,23,23,.42);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 24px 60px rgba(0,0,0,.4);
}
.hero-aside h2{
  margin:0;
  font-family:var(--serif);
  font-weight:600;
  font-size:22px;
  letter-spacing:.12em;
  color:#fff;
}
.hero-aside .subtitle{
  margin:2px 0 16px;
  font-size:15px;
  letter-spacing:.08em;
  color:var(--faint);
}
.hero-aside ul{
  display:flex;
  flex-direction:column;
  gap:7px;
  margin:0;
  padding:0;
  list-style:none;
}
.hero-aside a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  color:var(--paper);
  text-decoration:none;
  font-size:16px;
  transition:background .24s ease, color .24s ease, border-color .24s ease;
}
.hero-aside a:hover{background:rgba(255,20,147,.24);border-color:transparent;color:#fff}

/* ---------- 正文分区 ---------- */
main > div[id]{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,900px);
  justify-content:center;
  gap:14px;
  padding:clamp(54px,8.5vw,102px) var(--pad);
  border-top:1px solid var(--line);
  scroll-margin-top:148px;
}
main > div[id]:nth-of-type(even){
  background:linear-gradient(180deg,rgba(255,20,147,.07),rgba(255,20,147,0) 68%);
}
main > div[id]:nth-of-type(odd){
  background:linear-gradient(180deg,rgba(255,0,0,.055),rgba(255,0,0,0) 68%);
}

main > div[id] h2{
  margin:8px 0 0;
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(24px,3.4vw,35px);
  line-height:1.28;
  letter-spacing:.03em;
  color:#fff;
}
main > div[id] > h2::before{
  content:"";
  display:block;
  width:58px;
  height:2px;
  margin-bottom:18px;
  background:linear-gradient(90deg,var(--red),var(--pink));
  box-shadow:0 0 18px rgba(255,20,147,.7);
}

main > div[id] > p.subtitle,
main > div[id] h2 + p{
  margin:0;
  color:var(--faint);
  font-size:16px;
  letter-spacing:.05em;
}

main > div[id] h3{
  margin:26px 0 6px;
  font-family:var(--serif);
  font-weight:600;
  font-size:22px;
  letter-spacing:.03em;
  color:#ffe6ef;
}

main > div[id] p{
  margin:0;
  font-size:17px;
  line-height:1.88;
  color:rgba(249,239,236,.88);
}

main > div[id] ul,
main > div[id] ol{
  margin:0;
  padding-left:1.35em;
  display:grid;
  gap:9px;
  font-size:17px;
  line-height:1.82;
  color:rgba(249,239,236,.88);
}
main > div[id] li::marker{color:var(--pink)}

main > div[id] strong{color:#fff;font-weight:600}

main > div[id] a{
  color:var(--pink);
  text-decoration:none;
  border-bottom:1px solid rgba(255,20,147,.45);
  padding-bottom:1px;
  transition:border-color .22s ease, color .22s ease;
}
main > div[id] a:hover{color:#fff;border-bottom-color:#fff}

main > div[id] img{
  width:100%;
  margin:6px 0;
  box-shadow:0 20px 52px rgba(0,0,0,.42);
}

main > div[id] blockquote{
  margin:0;
  padding:16px 22px;
  border-left:3px solid var(--pink);
  background:rgba(255,20,147,.08);
  color:rgba(249,239,236,.9);
}

/* ---------- 页脚 ---------- */
footer{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:start;
  gap:16px 40px;
  padding:clamp(50px,7.5vw,88px) var(--pad) 26px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,0,0,.14),rgba(38,23,23,.94) 72%);
}

footer p{margin:0}

.foot-brand{
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(36px,7.4vw,76px);
  line-height:1;
  letter-spacing:.05em;
  background:linear-gradient(96deg,#fff,#ffb9d4 46%,var(--pink) 74%,var(--red));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.foot-links{
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-end;
  max-width:440px;
  gap:0 2px;
}
.foot-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 12px;
  color:var(--dim);
  font-size:16px;
  text-decoration:none;
  letter-spacing:.04em;
  transition:color .22s ease;
}
.foot-links a:hover{color:var(--pink)}

footer small{
  grid-column:1 / -1;
  color:var(--faint);
  font-size:15px;
  letter-spacing:.06em;
}

/* ---------- 滚动进场 ---------- */
.js main > div[id]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .8s ease, transform .8s ease;
}
.js main > div[id].in{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  body::before{animation:none}
  .js main > div[id]{opacity:1;transform:none;transition:none}
  .cta:hover,
  .nav ul a:hover{transform:none}
}

/* ---------- 窄屏 ---------- */
@media (max-width:900px){
  .hero{
    grid-template-columns:minmax(0,1fr);
    align-items:start;
    min-height:0;
    padding-top:clamp(44px,10vw,72px);
    padding-bottom:clamp(44px,10vw,72px);
  }
  .hero-copy{max-width:none}
  .hero-desc{max-width:none}
  .hero-aside{max-width:520px}
  .hero-aside ul{flex-direction:row;flex-wrap:wrap}
  .hero-aside a{padding:0 12px}

  main > div[id]{scroll-margin-top:186px}
}

@media (max-width:780px){
  body{font-size:16px;line-height:1.78}
  .ticker{font-size:13px;letter-spacing:.3em;text-indent:.3em}
  .nav{
    grid-template-columns:minmax(0,1fr);
    gap:9px;
    padding-top:12px;
    padding-bottom:12px;
  }
  .brand{order:-1;font-size:21px;min-height:40px}
  .nav ul,
  .nav-b{justify-content:center;gap:6px}
  .nav ul a{min-height:40px;padding:0 13px;font-size:16px}

  footer{grid-template-columns:minmax(0,1fr);gap:14px}
  .foot-links{justify-content:flex-start;max-width:none}
  .foot-links a{padding-left:0;padding-right:14px}
}

@media (min-width:1320px){
  .hero-copy h1{font-size:62px}
}

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