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

:root{
  --ink:#0F1B2D;
  --ink-deep:#091320;
  --rose:#FF5A7A;
  --cream:#F4F1EA;
  --line:rgba(244,241,234,.16);
  --glass:rgba(244,241,234,.055);
  --chrome:136px;
  --head:58px;
  --font:'Quicksand','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --hand:'Caveat','Quicksand',cursive;
}

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

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

body{
  margin:0;
  background:var(--ink);
  color:var(--cream);
  font-family:var(--font);
  font-size:17px;
  line-height:1.78;
  font-weight:400;
  overflow-x:clip;
  background-image:
    radial-gradient(90% 60% at 100% 0%, rgba(255,90,122,.10), transparent 60%),
    radial-gradient(70% 50% at 0% 30%, rgba(255,90,122,.06), transparent 65%);
  background-repeat:no-repeat;
}

body.lock{overflow:hidden}

a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0}

.vh{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

main [id]{scroll-margin-top:calc(var(--head) + 66px)}

/* ---------- 顶部细条 ---------- */
.ticker{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:34px;
  padding:3px 14px;
  background:var(--rose);
  color:var(--ink);
  font-size:16px;
  font-weight:700;
  letter-spacing:.18em;
  text-align:center;
}

/* ---------- 页头 ---------- */
.masthead{
  position:sticky;
  top:0;
  z-index:60;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:10px;
  height:var(--head);
  padding:0 clamp(12px,3vw,30px);
  background:rgba(15,27,45,.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}

.brand{
  font-size:1.12rem;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
  padding:6px 4px;
  transition:color .25s;
}
.brand:hover{color:var(--rose)}

.nav-l,.nav-r-in{display:flex;align-items:center;gap:2px}
.nav-r{display:flex;align-items:center;gap:8px;justify-self:end}

.ml{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 9px;
  font-size:16px;
  font-weight:500;
  color:rgba(244,241,234,.78);
  position:relative;
  transition:color .22s;
}
.ml::after{
  content:"";
  position:absolute;
  left:9px;
  right:9px;
  bottom:12px;
  height:1px;
  background:var(--rose);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s cubic-bezier(.2,.7,.2,1);
}
.ml:hover{color:var(--rose)}
.ml:hover::after{transform:scaleX(1)}

.burger{
  width:44px;
  height:44px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  padding:0;
  background:rgba(244,241,234,.05);
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
  transition:background .25s,border-color .25s;
}
.burger i{display:block;width:17px;height:2px;background:var(--cream);transition:transform .3s}
.burger:hover{background:rgba(255,90,122,.16);border-color:var(--rose)}

/* ---------- 二级锚点条 ---------- */
.anchors{
  position:sticky;
  top:var(--head);
  z-index:55;
  overflow-x:auto;
  overflow-y:hidden;
  background:rgba(9,19,32,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  scrollbar-width:none;
}
.anchors::-webkit-scrollbar{height:0}

.anchor-nav{
  display:flex;
  gap:2px;
  padding:0 clamp(8px,2.4vw,26px);
  white-space:nowrap;
  width:max-content;
  min-width:100%;
}
.an{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  font-size:16px;
  color:rgba(244,241,234,.66);
  border-bottom:2px solid transparent;
  transition:color .22s,border-color .22s;
}
.an:hover{color:var(--rose);border-bottom-color:var(--rose)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:calc(100vh - var(--chrome));
  min-height:calc(100svh - var(--chrome));
  display:flex;
  align-items:flex-end;
  justify-content:flex-end;
  padding:40px clamp(18px,5vw,64px) clamp(40px,7vh,84px);
  overflow:hidden;
  isolation:isolate;
  background:radial-gradient(120% 90% at 78% 8%,#1c3049,var(--ink) 72%);
}

.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.5;filter:grayscale(.18) contrast(1.06)}

.hero-veil{
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(196deg,rgba(15,27,45,.12) 0%,rgba(15,27,45,.72) 55%,rgba(15,27,45,.96) 100%);
}

.hero-inner{
  position:relative;
  z-index:2;
  margin-left:auto;
  max-width:min(760px,94%);
  text-align:right;
}

.hero-title{
  font-size:clamp(2.4rem,7.4vw,5.1rem);
  line-height:1.05;
  font-weight:600;
  letter-spacing:-.015em;
  background:linear-gradient(98deg,var(--cream) 18%,var(--rose) 94%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-wrap:balance;
}

.hero-title .ltr{
  display:inline-block;
  opacity:0;
  transform:translateY(.42em) rotate(1.2deg);
  animation:lift .62s cubic-bezier(.18,.72,.2,1) forwards;
}

@keyframes lift{
  to{opacity:1;transform:translateY(0) rotate(0)}
}

/* ---------- 版心 ---------- */
.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:clamp(28px,6vw,68px) clamp(16px,4vw,38px);
}

.content{
  display:grid;
  grid-template-columns:minmax(0,1fr) 266px;
  gap:clamp(20px,3vw,40px);
  align-items:start;
}

/* ---------- 正文 ---------- */
.prose{display:grid;gap:24px;min-width:0}

.prose > article{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:10px;
  padding:clamp(20px,3vw,34px);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:0 24px 50px -40px #000;
  transition:border-color .35s, box-shadow .35s, opacity .8s ease, transform .8s cubic-bezier(.2,.7,.2,1);
}

.prose > article:hover{
  border-color:rgba(255,90,122,.4);
  box-shadow:0 26px 60px -38px rgba(255,90,122,.5);
}

.js .prose > article,
.js .side{opacity:0;transform:translateY(26px)}
.js .prose > article.is-in,
.js .side.is-in{opacity:1;transform:none}

.prose h2{
  font-size:clamp(1.42rem,3vw,2.05rem);
  line-height:1.24;
  font-weight:600;
  letter-spacing:-.012em;
  margin-bottom:14px;
  transition:font-weight .3s;
}
.prose > article:nth-child(2n) h2{font-weight:700}
.prose > article:nth-child(3n) h2{font-weight:400}

.prose h3{
  font-size:1.16rem;
  font-weight:600;
  color:var(--rose);
  margin:26px 0 10px;
}

.prose hr{
  height:1px;
  border:0;
  margin:0 0 20px;
  width:min(180px,42%);
  background:linear-gradient(90deg,var(--rose),rgba(255,90,122,0));
}

.prose p{margin-bottom:15px;color:rgba(244,241,234,.88)}
.prose p:last-child{margin-bottom:0}

.prose ul,.prose ol{padding-left:1.3em;margin-bottom:15px}
.prose li{margin:.4em 0}
.prose li::marker{color:var(--rose)}

.prose strong{color:#fff;font-weight:700}
.prose em{font-style:normal;color:var(--rose)}

.prose a{
  color:var(--rose);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
.prose a:hover{background:rgba(255,90,122,.14)}

.prose blockquote{
  margin:22px 0;
  padding:14px 20px;
  border-left:2px solid var(--rose);
  border-radius:0 10px 10px 0;
  background:rgba(255,90,122,.08);
  font-family:var(--hand);
  font-size:1.22rem;
  line-height:1.7;
}

.prose img{border-radius:10px;border:1px solid var(--line);margin:14px 0}

.prose table{width:100%;border-collapse:collapse;font-size:16px;margin:14px 0}
.prose th,.prose td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.prose th{background:rgba(255,90,122,.12);font-weight:600}

/* ---------- 侧栏 ---------- */
.side{
  position:sticky;
  top:calc(var(--head) + 62px);
  padding:18px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:10px;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:opacity .8s ease, transform .8s cubic-bezier(.2,.7,.2,1);
}

.side h2{
  font-size:16px;
  font-weight:600;
  letter-spacing:.3em;
  color:var(--rose);
  margin-bottom:8px;
}

.side hr{
  height:1px;
  border:0;
  margin:0 0 10px;
  background:linear-gradient(90deg,var(--rose),rgba(255,90,122,0));
}

.toc{list-style:none}
.toc a{
  display:flex;
  align-items:center;
  min-height:40px;
  font-size:16px;
  color:rgba(244,241,234,.76);
  border-bottom:1px dashed rgba(244,241,234,.12);
  transition:color .22s,padding-left .22s;
}
.toc a:hover{color:var(--rose);padding-left:6px}

.to-top{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  margin-top:12px;
  font-size:16px;
  color:var(--rose);
  font-family:var(--hand);
  font-size:1.2rem;
}

/* ---------- 页脚 ---------- */
.base{
  margin-top:clamp(36px,7vw,76px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,90,122,.07),rgba(9,19,32,0) 42%);
}

.cta{
  max-width:1180px;
  margin:0 auto;
  padding:clamp(38px,7vw,86px) clamp(18px,4vw,38px) clamp(22px,4vw,38px);
}

.cta-brand{
  display:inline-block;
  font-size:clamp(2rem,6vw,4rem);
  font-weight:700;
  line-height:1.06;
  letter-spacing:-.02em;
  background:linear-gradient(92deg,var(--cream),var(--rose));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  transition:transform .35s cubic-bezier(.2,.7,.2,1);
  transform-origin:left;
}
.cta-brand:hover{transform:translateX(6px) scale(1.01)}

.cta-line{
  max-width:62ch;
  margin-top:16px;
  color:rgba(244,241,234,.7);
}

.cols{
  max-width:1180px;
  margin:0 auto;
  padding:0 clamp(18px,4vw,38px) 38px;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}

.cols dt{
  font-size:16px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--rose);
  margin-bottom:6px;
}

.cols a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:16px;
  color:rgba(244,241,234,.76);
  transition:color .22s;
}
.cols a:hover{color:var(--rose)}

.bottom{
  max-width:1180px;
  margin:0 auto;
  padding:14px clamp(18px,4vw,38px) 30px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  border-top:1px solid var(--line);
}

.copy{font-family:var(--hand);font-size:1.3rem;color:rgba(244,241,234,.7)}

.bottom-links{display:flex;gap:18px}
.bottom-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:16px;
  color:rgba(244,241,234,.7);
}
.bottom-links a:hover{color:var(--rose)}

/* ---------- 全屏菜单 ---------- */
.overlay{
  position:fixed;
  inset:0;
  z-index:90;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:clamp(28px,8vh,80px) clamp(20px,6vw,64px);
  background:rgba(6,13,22,.96);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  opacity:0;
  visibility:hidden;
  transition:opacity .34s ease,visibility .34s;
}
.overlay.on{opacity:1;visibility:visible}

.close{
  position:absolute;
  top:16px;
  right:16px;
  width:46px;
  height:46px;
  display:grid;
  place-items:center;
  background:rgba(244,241,234,.06);
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--cream);
  font-size:1.5rem;
  cursor:pointer;
}
.close::before{content:"×";line-height:1}
.close:hover{border-color:var(--rose);color:var(--rose)}

.overlay-nav{display:grid;gap:2px;max-width:760px}

.overlay-nav a{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:54px;
  font-size:clamp(1.3rem,4.6vw,2.1rem);
  font-weight:600;
  border-bottom:1px solid rgba(244,241,234,.1);
  opacity:0;
  transform:translateY(16px);
  transition:opacity .4s ease,transform .4s ease,color .25s;
}
.overlay-nav .num{
  font-family:var(--hand);
  font-size:1.05rem;
  font-weight:400;
  color:var(--rose);
  min-width:2em;
}
.overlay-nav a:hover{color:var(--rose)}
.overlay.on .overlay-nav a{opacity:1;transform:none}
.overlay.on .overlay-nav a:nth-child(1){transition-delay:.06s}
.overlay.on .overlay-nav a:nth-child(2){transition-delay:.1s}
.overlay.on .overlay-nav a:nth-child(3){transition-delay:.14s}
.overlay.on .overlay-nav a:nth-child(4){transition-delay:.18s}
.overlay.on .overlay-nav a:nth-child(5){transition-delay:.22s}
.overlay.on .overlay-nav a:nth-child(6){transition-delay:.26s}
.overlay.on .overlay-nav a:nth-child(7){transition-delay:.3s}

/* ---------- 响应式 ---------- */
@media (max-width:1040px){
  .nav-l,.nav-r-in{display:none}
}

@media (max-width:900px){
  :root{--chrome:132px}
  .content{grid-template-columns:minmax(0,1fr)}
  .side{position:static;top:auto;order:2}
  .hero{justify-content:flex-start}
  .hero-inner{margin-left:0;text-align:right;max-width:100%}
  .hero-title{font-size:clamp(2.15rem,9vw,3.4rem)}
  .cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
}

@media (max-width:560px){
  body{font-size:17px}
  .protect, .prose{min-width:0}
  .hero{padding:34px 18px 46px}
  .cols{grid-template-columns:minmax(0,1fr)}
  .bottom{flex-direction:column;align-items:flex-start;gap:4px}
  .bottom-links a{padding-right:4px}
  .cta-line{max-width:100%}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js .prose > article,.js .side{opacity:1;transform:none}
  .hero-title .ltr{opacity:1;transform:none}
  .overlay-nav a{opacity:1;transform:none}
}

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