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

:root{
  --pink:#eb879c;
  --pink-soft:#ffb6c1;
  --pink-wash:#fdeef1;
  --ink:#26171a;
  --ink-2:#5b4147;
  --paper:#fffafb;
  --line:#f2d9de;
  --r:28px;
  --sh:0 1px 2px rgba(38,23,26,.05),0 8px 18px -12px rgba(38,23,26,.18),0 24px 48px -34px rgba(38,23,26,.24);
  --sh-hi:0 2px 6px rgba(38,23,26,.07),0 14px 26px -14px rgba(38,23,26,.22),0 34px 64px -38px rgba(38,23,26,.3);
  --t:240ms cubic-bezier(.22,.68,.32,1);
}

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

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

body{
  margin:0;
  padding:0 0 108px;
  color:var(--ink);
  font-family:Inter,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  background:linear-gradient(180deg,#fff7f9 0%,var(--pink-wash) 45%,#fff8fa 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}

body:has(.menu-toggle:checked){overflow:hidden}

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

a{color:var(--ink);text-decoration:none}

a:focus-visible,
label:focus-visible,
button:focus-visible{
  outline:3px solid var(--pink);
  outline-offset:3px;
  border-radius:6px;
}

.menu-toggle{
  position:fixed;
  top:0;
  left:0;
  width:1px;
  height:1px;
  opacity:0;
  pointer-events:none;
  margin:0;
}

/* —— 底部固定条 —— */
.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:50;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,250,251,.92);
  border-top:1px solid var(--line);
  box-shadow:0 -10px 28px -22px rgba(38,23,26,.5);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:44px;
  font-weight:600;
  letter-spacing:.01em;
}

.mark{
  display:grid;
  place-items:center;
  width:30px;
  height:30px;
  border-radius:50%;
  background:linear-gradient(150deg,var(--pink),var(--pink-soft));
  color:#fff;
  font-size:15px;
  font-weight:700;
  line-height:1;
  box-shadow:0 4px 10px -6px rgba(38,23,26,.55);
}

.mark svg,.mark img{width:18px;height:18px}

.brand-name{font-size:17px}

.dock-right{display:flex;align-items:center;gap:8px}

.dock-contact{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 15px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  transition:background var(--t),color var(--t);
}

.dock-contact:hover{background:var(--pink-wash);color:var(--ink)}

.burger{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  background:linear-gradient(150deg,var(--pink),var(--pink-soft));
  color:#fff;
  font-size:15px;
  font-weight:600;
  letter-spacing:.06em;
  cursor:pointer;
  box-shadow:0 8px 16px -12px rgba(38,23,26,.7);
  transition:transform var(--t),box-shadow var(--t);
}

.burger:hover{transform:translateY(-1px);box-shadow:0 12px 22px -14px rgba(38,23,26,.8)}

/* —— 全屏遮罩菜单 —— */
.menu-panel{
  position:fixed;
  inset:0;
  z-index:60;
  display:grid;
  align-content:center;
  justify-items:center;
  gap:8px;
  padding:64px 22px 48px;
  overflow:auto;
  color:#fff7f9;
  background:radial-gradient(130% 90% at 50% 0%,#3d252b 0%,#26171a 72%);
  transform:translateY(101%);
  visibility:hidden;
  transition:transform 280ms ease,visibility 280ms ease;
}

.menu-toggle:checked ~ .menu-panel{transform:none;visibility:visible}

.menu-close{
  position:absolute;
  top:16px;
  right:16px;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid rgba(255,247,249,.32);
  font-size:15px;
  cursor:pointer;
}

.menu-brand{
  margin:0 0 10px;
  font-size:14px;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--pink-soft);
}

.menu-nav ol{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  width:min(420px,84vw);
}

.menu-nav a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:8px 2px;
  color:#fff7f9;
  font-size:18px;
  font-weight:500;
  border-bottom:1px solid rgba(255,247,249,.14);
  transition:color var(--t),padding-left var(--t);
}

.menu-nav a:hover{color:var(--pink-soft);padding-left:10px}

/* —— 首屏 —— */
.hero{
  position:relative;
  isolation:isolate;
  display:grid;
  place-items:center;
  min-height:min(70vh,620px);
  padding:64px 20px 104px;
  text-align:center;
  overflow:hidden;
  background:#26171a;
  border-radius:0 0 50% 50% / 0 0 90px 90px;
}

.hero-art{position:absolute;inset:0;z-index:0}

.hero-art img{width:100%;height:100%;object-fit:cover}

.hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(180deg,rgba(38,23,26,.6) 0%,rgba(38,23,26,.74) 58%,rgba(38,23,26,.88) 100%);
}

.hero-copy{position:relative;z-index:2;max-width:23ch}

.hero h1{
  margin:0 0 22px;
  font-size:clamp(2rem,7.4vw,3.5rem);
  line-height:1.16;
  font-weight:600;
  letter-spacing:-.02em;
  color:#fff7f9;
  text-wrap:balance;
  text-shadow:0 8px 26px rgba(0,0,0,.35);
}

.hero-cta{
  display:inline-flex;
  align-items:center;
  min-height:48px;
  padding:0 30px;
  border-radius:999px;
  background:linear-gradient(150deg,var(--pink-soft),var(--pink));
  color:#2b171b;
  font-size:16px;
  font-weight:600;
  letter-spacing:.04em;
  box-shadow:0 14px 28px -18px rgba(0,0,0,.9);
  transition:transform var(--t),box-shadow var(--t);
}

.hero-cta:hover{transform:translateY(-2px);box-shadow:0 18px 34px -18px rgba(0,0,0,1)}

/* —— 主体骨架 —— */
.wrap{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:24px;
  max-width:1180px;
  margin:0 auto;
  padding:26px 16px 16px;
}

.prose{min-width:0;display:grid;gap:20px;align-content:start}

.prose > article{
  background:var(--paper);
  border-radius:var(--r);
  border-bottom:4px solid var(--pink-soft);
  box-shadow:var(--sh);
  padding:28px 22px 32px;
  scroll-margin-top:22px;
  scroll-margin-bottom:112px;
}

.prose h2{
  margin:0;
  font-size:clamp(1.35rem,3.6vw,1.72rem);
  line-height:1.35;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--ink);
}

.prose h3{
  margin:26px 0 8px;
  font-size:18px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink);
}

.prose hr{
  width:86px;
  height:3px;
  margin:12px 0 18px;
  border:0;
  border-radius:3px;
  background:linear-gradient(90deg,var(--pink),rgba(255,182,193,0));
}

.prose p{margin:0 0 14px}

.prose p:last-child{margin-bottom:0}

.prose ul,.prose ol{margin:0 0 14px;padding-left:1.25em}

.prose li{margin:0 0 8px}

.prose a{
  color:#a63a54;
  border-bottom:1px solid rgba(235,135,156,.55);
  transition:background var(--t);
}

.prose a:hover{background:rgba(255,182,193,.32)}

.prose strong{font-weight:600}

.prose blockquote{
  margin:18px 0;
  padding:14px 18px;
  border-left:4px solid var(--pink);
  border-radius:0 16px 16px 0;
  background:var(--pink-wash);
  color:var(--ink-2);
}

.prose table{width:100%;border-collapse:collapse;margin:0 0 16px;font-size:16px}

.prose th,.prose td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}

.prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:15px;
  background:var(--pink-wash);
  padding:2px 6px;
  border-radius:6px;
}

.prose img{border-radius:18px;margin:0 0 16px}

/* —— 侧栏 —— */
.rail{
  align-self:start;
  background:linear-gradient(180deg,#fff8fa,var(--pink-wash));
  border-radius:var(--r);
  border-bottom:4px solid var(--pink);
  box-shadow:var(--sh);
  padding:24px 20px 26px;
}

.rail-title{
  margin:0;
  font-size:15px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--ink-2);
}

.rail hr{
  width:52px;
  height:3px;
  margin:10px 0 14px;
  border:0;
  border-radius:3px;
  background:var(--pink);
}

.rail-list{list-style:none;margin:0;padding:0;counter-reset:rail}

.rail-list li{counter-increment:rail}

.rail-list a{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:8px 0;
  font-size:16px;
  color:var(--ink-2);
  border-bottom:1px dashed rgba(38,23,26,.16);
  transition:color var(--t),padding-left var(--t);
}

.rail-list a::before{
  content:counter(rail,decimal-leading-zero);
  font-size:12px;
  font-weight:600;
  color:var(--pink);
  letter-spacing:.06em;
}

.rail-list a:hover{color:var(--ink);padding-left:5px}

/* —— 页脚 —— */
.foot{
  margin:34px 0 0;
  padding:0 0 26px;
  color:#fff7f9;
  background:radial-gradient(120% 90% at 50% 0%,#3b2429 0%,#26171a 68%);
  border-radius:52px 52px 0 0;
}

.cta{
  display:grid;
  justify-items:center;
  gap:18px;
  text-align:center;
  padding:52px 22px 40px;
  border-bottom:1px solid rgba(255,247,249,.14);
  max-width:1180px;
  margin:0 auto;
}

.cta-big{
  margin:0;
  font-size:clamp(1.75rem,6vw,2.6rem);
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--pink-soft);
}

.cta-btn{
  display:inline-flex;
  align-items:center;
  min-height:48px;
  padding:0 28px;
  border-radius:999px;
  background:var(--pink-soft);
  color:#2b171b;
  font-size:16px;
  font-weight:600;
  transition:transform var(--t);
}

.cta-btn:hover{transform:translateY(-2px)}

.f-row{
  display:grid;
  gap:18px;
  justify-items:center;
  padding:26px 20px 0;
  max-width:1180px;
  margin:0 auto;
  text-align:center;
}

.f-brand .brand{color:#fff7f9}

.f-nav ol{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:4px 6px;
  margin:0;
  padding:0;
}

.f-nav a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  border-radius:999px;
  color:rgba(255,247,249,.86);
  font-size:15px;
  transition:background var(--t),color var(--t);
}

.f-nav a:hover{background:rgba(255,182,193,.2);color:#fff}

.f-copy p{
  margin:0;
  font-size:14px;
  line-height:1.7;
  color:rgba(255,247,249,.6);
}

/* —— 动效 —— */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity var(--t),transform var(--t);
}

.reveal.in{opacity:1;transform:none}

/* —— 断点 —— */
@media (min-width:720px){
  body{font-size:17.5px}
  .wrap{padding:34px 24px 20px;gap:28px}
  .prose > article{padding:34px 34px 38px}
  .f-row{grid-template-columns:1fr auto 1fr;align-items:center;justify-items:start;text-align:left}
  .f-copy{justify-self:end;text-align:right}
  .f-brand{justify-self:start}
}

@media (min-width:980px){
  .wrap{grid-template-columns:minmax(0,1fr) 300px;gap:34px;padding:40px 32px 24px}
  .rail{position:sticky;top:22px}
  .prose > article{padding:38px 40px 42px}
  .hero{min-height:min(70vh,660px)}
}

@media (min-width:1200px){
  .prose > article{padding:42px 46px 46px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .menu-panel{transition:visibility 0s}
  .burger:hover,.hero-cta:hover,.cta-btn:hover{transform:none}
}

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