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

:root{
  --ink:#1f1726;
  --deep:#120c19;
  --violet:#56228b;
  --brown:#8b4513;
  --cream:#f7eef8;
  --muted:#c8b6d3;
  --faint:#9d8ba9;
  --glass:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.1);
  --serif:"Playfair Display",Georgia,"Songti SC","Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
}

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

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

body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.72;
  color:var(--cream);
  background-color:var(--deep);
  background-image:
    radial-gradient(62vw 62vw at 10% -12%, rgba(86,34,139,.55), transparent 64%),
    radial-gradient(56vw 56vw at 96% 6%, rgba(139,69,19,.42), transparent 62%),
    radial-gradient(72vw 60vw at 50% 112%, rgba(86,34,139,.28), transparent 60%),
    linear-gradient(180deg,#190f23 0%,#120c19 46%,#0f0915 100%);
  background-attachment:fixed;
  overflow-x:hidden;
  min-height:100vh;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.16;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}

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

a{color:#d8bdf0}
a:hover{color:#fff}

:focus-visible{
  outline:2px solid #d8bdf0;
  outline-offset:3px;
}

/* 顶部细条 */
.strip{
  position:relative;
  z-index:2;
  background:linear-gradient(92deg, rgba(86,34,139,.92), rgba(139,69,19,.8));
}
.strip p{
  margin:0;
  padding:9px 74px 9px 18px;
  text-align:center;
  font-size:16px;
  letter-spacing:.24em;
  color:#fbf4fc;
}

/* 页头 */
.site-head{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  padding:14px clamp(16px,4vw,40px) 14px;
  padding-right:86px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:6px 4px;
  text-decoration:none;
  color:var(--cream);
}
.brand-text{
  font-family:var(--serif);
  font-size:1.5rem;
  letter-spacing:.08em;
  line-height:1;
}
.brand-mark{
  width:36px;height:36px;
  border-radius:52% 48% 45% 55%;
  object-fit:cover;
}
.brand::before{
  content:"";
  width:15px;height:15px;
  border-radius:62% 38% 55% 45%;
  background:linear-gradient(140deg,#8b48c8,#a86030);
  box-shadow:0 0 0 1px rgba(255,255,255,.18);
  flex:0 0 auto;
}

/* 汉堡按钮 */
.menu-btn{
  position:fixed;
  top:14px;right:14px;
  z-index:80;
  width:52px;height:52px;
  display:grid;
  place-items:center;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(30,20,40,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  color:var(--cream);
  cursor:pointer;
  transition:background .25s ease, transform .25s ease;
}
.menu-btn:hover{background:rgba(86,34,139,.6)}
.menu-btn .bar{
  display:block;
  width:21px;height:2px;
  background:currentColor;
  border-radius:2px;
  position:relative;
}
.menu-btn .bar::before,
.menu-btn .bar::after{
  content:"";
  position:absolute;
  left:0;
  width:21px;height:2px;
  background:currentColor;
  border-radius:2px;
  transition:transform .25s ease, top .25s ease;
}
.menu-btn .bar::before{top:-7px}
.menu-btn .bar::after{top:7px}
body.menu-open .menu-btn .bar{background:transparent}
body.menu-open .menu-btn .bar::before{top:0;transform:rotate(45deg)}
body.menu-open .menu-btn .bar::after{top:0;transform:rotate(-45deg)}

/* 全屏菜单 */
.menu{
  position:fixed;
  inset:0;
  z-index:70;
  display:grid;
  align-content:center;
  gap:2px;
  padding:100px clamp(20px,7vw,72px) 44px;
  background:rgba(16,10,22,.95);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  opacity:0;
  visibility:hidden;
  transition:opacity .32s ease, visibility .32s ease;
  overflow-y:auto;
}
body.menu-open .menu{opacity:1;visibility:visible}
body.menu-open{overflow:hidden}

.menu a{
  display:flex;
  align-items:center;
  min-height:54px;
  padding:10px 4px;
  font-family:var(--serif);
  font-size:clamp(1.2rem,4.4vw,1.75rem);
  letter-spacing:.02em;
  color:var(--cream);
  text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:padding-left .22s ease, color .22s ease;
}
.menu a:hover,
.menu a:focus-visible{padding-left:14px;color:#e6c8ff}
body.menu-open .menu a{animation:slideIn .42s cubic-bezier(.2,.7,.3,1) both}
body.menu-open .menu a:nth-child(1){animation-delay:.04s}
body.menu-open .menu a:nth-child(2){animation-delay:.08s}
body.menu-open .menu a:nth-child(3){animation-delay:.12s}
body.menu-open .menu a:nth-child(4){animation-delay:.16s}
body.menu-open .menu a:nth-child(5){animation-delay:.2s}
body.menu-open .menu a:nth-child(6){animation-delay:.24s}
body.menu-open .menu a:nth-child(7){animation-delay:.28s}

/* 粘性锚点条 */
.anchors{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(18,12,25,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.anchors nav{
  display:flex;
  gap:4px;
  overflow-x:auto;
  padding:5px clamp(10px,3vw,26px);
  scrollbar-width:none;
}
.anchors nav::-webkit-scrollbar{display:none}
.anchors a{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:6px 14px;
  border-radius:999px;
  font-size:16px;
  white-space:nowrap;
  color:var(--muted);
  text-decoration:none;
  transition:background .2s ease, color .2s ease;
}
.anchors a:hover,
.anchors a:focus-visible{background:rgba(255,255,255,.09);color:#fff}

/* 主区 */
.page{
  position:relative;
  z-index:1;
  max-width:1180px;
  margin:0 auto;
  padding:0 clamp(14px,4vw,40px);
}

main > section{scroll-margin-top:92px}
.reading-main > section{scroll-margin-top:92px}

/* hero */
.hero{
  display:grid;
  gap:clamp(16px,3vw,26px);
  min-height:45vh;
  padding:clamp(26px,5vw,54px) 0 0;
  animation:rise .7s cubic-bezier(.2,.7,.3,1) both;
}
.hero-copy{
  position:relative;
  padding:clamp(20px,3.6vw,34px);
  border-radius:30px 22px 28px 24px;
  background:
    radial-gradient(rgba(255,255,255,.14) 1px, transparent 1px) 0 0/20px 20px,
    linear-gradient(150deg, rgba(86,34,139,.35), rgba(31,23,38,.2) 60%, rgba(139,69,19,.24));
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  overflow:hidden;
}
.hero h1{
  margin:0;
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(2rem,7vw,3.5rem);
  line-height:1.14;
  letter-spacing:-.01em;
  color:#fdf6fe;
  text-wrap:balance;
}
.hero-desc{
  margin:14px 0 0;
  max-width:48ch;
  color:var(--muted);
  font-size:16.5px;
}
.hero-art{
  margin:0;
  height:clamp(150px,26vw,230px);
  border-radius:26px 34px 24px 30px;
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(120deg, rgba(31,23,38,.7), rgba(86,34,139,.25));
}
.hero-art svg{
  display:block;
  width:100%;
  height:100%;
  animation:drift 16s ease-in-out infinite alternate;
}

/* 正文 + 右侧栏 */
.reading{
  display:grid;
  grid-template-columns:minmax(0,1fr) 272px;
  gap:clamp(16px,3vw,32px);
  padding:clamp(26px,5vw,50px) 0;
  align-items:start;
}
.reading-main{min-width:0}

.reading-main > section{
  position:relative;
  padding:clamp(20px,3.4vw,34px);
  margin-bottom:clamp(16px,3vw,26px);
  border-radius:28px 22px 28px 24px;
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 22px 46px -30px rgba(0,0,0,.95);
  animation:rise .7s cubic-bezier(.2,.7,.3,1) both;
}
.reading-main > section:nth-child(2n){border-radius:22px 28px 20px 28px;background:rgba(139,69,19,.075)}
.reading-main > section:nth-child(3n){border-radius:28px 24px 26px 22px;background:rgba(86,34,139,.1)}
.reading-main > section:nth-child(1){animation-delay:.06s}
.reading-main > section:nth-child(2){animation-delay:.1s}
.reading-main > section:nth-child(3){animation-delay:.14s}
.reading-main > section:nth-child(4){animation-delay:.18s}
.reading-main > section:nth-child(5){animation-delay:.22s}
.reading-main > section:nth-child(6){animation-delay:.26s}
.reading-main > section:nth-child(7){animation-delay:.3s}

.reading-main small{
  display:block;
  margin-bottom:6px;
  font-size:16px;
  letter-spacing:.18em;
  color:#c9a7e6;
}
.reading-main h2{
  margin:0 0 14px;
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(1.35rem,2.7vw,1.9rem);
  line-height:1.3;
  color:#fdf6fe;
}
.reading-main h3{
  margin:22px 0 10px;
  font-family:var(--serif);
  font-size:clamp(1.15rem,2.2vw,1.4rem);
  line-height:1.35;
  color:#f3e6fa;
}
.reading-main p{margin:0 0 1em;color:#eae0f0}
.reading-main p:last-child{margin-bottom:0}
.reading-main ul,
.reading-main ol{margin:0 0 1em;padding-left:1.25em}
.reading-main li{margin-bottom:.45em}
.reading-main a{color:#e0c3f8;text-underline-offset:3px}
.reading-main a:hover{color:#fff}
.reading-main strong{color:#fff}
.reading-main figure{
  margin:18px 0;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
}
.reading-main figure img{display:block;width:100%;height:auto}
.reading-main blockquote{
  margin:18px 0;
  padding:14px 18px;
  border-left:3px solid rgba(200,150,230,.7);
  border-radius:0 18px 18px 0;
  background:rgba(255,255,255,.05);
  color:#efe3f6;
}
.reading-main img{max-width:100%;height:auto}

/* 侧栏 */
.side{
  position:sticky;
  top:92px;
  padding:22px;
  border-radius:28px 20px 30px 22px;
  border:1px solid rgba(255,255,255,.14);
  background:linear-gradient(168deg, rgba(86,34,139,.34), rgba(139,69,19,.18));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 22px 44px -30px rgba(0,0,0,.9);
}
.side small{
  display:block;
  font-size:16px;
  letter-spacing:.2em;
  color:#d3b3ee;
  margin-bottom:4px;
}
.side h2{
  margin:0 0 12px;
  font-family:var(--serif);
  font-size:1.28rem;
  font-weight:600;
  color:#fdf6fe;
}
.side ul{
  list-style:none;
  margin:0 0 14px;
  padding:0;
  display:grid;
}
.side li + li{border-top:1px dashed rgba(255,255,255,.1)}
.side a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:6px 4px;
  font-size:16px;
  color:var(--muted);
  text-decoration:none;
  transition:color .2s ease, padding-left .2s ease;
}
.side a:hover,
.side a:focus-visible{color:#fff;padding-left:10px}
.side .totop{
  justify-content:center;
  min-height:44px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);
  color:#fff;
  padding:8px 14px;
}
.side .totop:hover{background:rgba(255,255,255,.16);padding-left:14px}

/* CTA */
.cta{
  margin:6px 0 clamp(28px,5vw,46px);
  padding:clamp(26px,5vw,52px);
  border-radius:30px 22px 32px 24px;
  border:1px solid rgba(255,255,255,.16);
  background:
    radial-gradient(70% 130% at 8% 0%, rgba(255,255,255,.14), transparent 60%),
    linear-gradient(140deg, rgba(86,34,139,.62), rgba(139,69,19,.45));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  animation:rise .7s cubic-bezier(.2,.7,.3,1) both;
  animation-delay:.34s;
}
.cta small{
  display:block;
  font-size:16px;
  letter-spacing:.2em;
  color:#efdcfa;
  margin-bottom:6px;
}
.cta h2{
  margin:0 0 20px;
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(1.6rem,4.4vw,2.4rem);
  line-height:1.2;
  color:#fff;
}
.cta-btn{
  display:inline-flex;
  align-items:center;
  min-height:48px;
  padding:12px 28px;
  border-radius:999px;
  background:#f8f0fa;
  color:#2a1338;
  font-weight:600;
  font-size:16px;
  text-decoration:none;
  transition:transform .22s ease, box-shadow .22s ease;
}
.cta-btn:hover{
  color:#2a1338;
  transform:translateY(-2px);
  box-shadow:0 16px 28px -14px rgba(0,0,0,.9);
}

/* 页脚 */
.site-foot{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:4px 22px;
  padding:16px clamp(14px,4vw,40px) 30px;
  border-top:1px solid var(--line);
  background:rgba(16,10,22,.5);
}
.foot-brand a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-family:var(--serif);
  font-size:1.1rem;
  letter-spacing:.06em;
  color:var(--cream);
  text-decoration:none;
}
.foot-nav dl{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0 14px;
  margin:0;
}
.foot-nav dt{
  display:flex;
  align-items:center;
  min-height:44px;
  font-size:16px;
  letter-spacing:.2em;
  color:#b39bc4;
}
.foot-nav dd{margin:0}
.foot-nav a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 2px;
  font-size:16px;
  color:var(--muted);
  text-decoration:none;
}
.foot-nav a:hover,
.foot-nav a:focus-visible{color:#fff}
.foot-copy{
  margin:0;
  font-size:16px;
  color:var(--faint);
}

/* 动效 */
@keyframes rise{
  from{opacity:0;transform:translateY(18px)}
  to{opacity:1;transform:none}
}
@keyframes slideIn{
  from{opacity:0;transform:translateX(-14px)}
  to{opacity:1;transform:none}
}
@keyframes drift{
  from{transform:translate3d(-2%,0,0) scale(1.04)}
  to{transform:translate3d(2%,-2%,0) scale(1.1)}
}

/* 断点 */
@media (max-width:900px){
  .reading{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
  .hero{min-height:0;padding-top:22px}
}

@media (max-width:560px){
  body{font-size:17px}
  .strip p{letter-spacing:.16em;padding-left:14px;padding-right:70px}
  .hero h1{font-size:clamp(1.85rem,8.6vw,2.5rem)}
  .reading-main > section{padding:18px 16px}
  .side{padding:18px 16px}
  .cta-btn{width:100%;justify-content:center}
  .site-foot{justify-content:flex-start;gap:2px 16px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}

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