:root{
  --bg1:#0b1020;
  --bg2:#121a33;
  --card:#ffffff10;
  --card2:#ffffff14;
  --text:#f6f7fb;
  --muted:#c7cbe2;
  --accent:#ffd76a;
  --accent2:#ff7bb0;
  --border:#ffffff22;
  --shadow: 0 18px 50px rgba(0,0,0,.35);
  --radius: 18px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: "Noto Sans SC", system-ui, -apple-system, Segoe UI, Roboto, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 700px at 20% 10%, #2b2a5a 0%, transparent 60%),
              radial-gradient(1200px 700px at 80% 20%, #41213f 0%, transparent 60%),
              linear-gradient(160deg, var(--bg1), var(--bg2));
  overflow-x:hidden;
}

code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background:#ffffff12;
  border:1px solid #ffffff22;
  padding:.05em .4em;
  border-radius:999px;
}

/* 漂浮爱心背景 */
.hearts{
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  overflow:hidden;
}
.hearts span{
  position:absolute;
  width:14px;
  height:14px;
  background: linear-gradient(145deg, var(--accent2), var(--accent));
  transform: rotate(45deg);
  opacity:.16;
  border-radius:3px;
  animation: floatUp linear infinite;
}
.hearts span::before,
.hearts span::after{
  content:"";
  position:absolute;
  width:14px;
  height:14px;
  background: inherit;
  border-radius:50%;
}
.hearts span::before{ left:-7px; top:0; }
.hearts span::after{ top:-7px; left:0; }

.hearts span:nth-child(1){ left:6%;  bottom:-20px; animation-duration: 18s; animation-delay: 0s;  transform: rotate(45deg) scale(.9); }
.hearts span:nth-child(2){ left:14%; bottom:-40px; animation-duration: 22s; animation-delay: 2s;  transform: rotate(45deg) scale(.7); }
.hearts span:nth-child(3){ left:25%; bottom:-60px; animation-duration: 16s; animation-delay: 1s;  transform: rotate(45deg) scale(1.1); }
.hearts span:nth-child(4){ left:38%; bottom:-30px; animation-duration: 24s; animation-delay: 4s;  transform: rotate(45deg) scale(.8); }
.hearts span:nth-child(5){ left:49%; bottom:-70px; animation-duration: 19s; animation-delay: 0.5s;transform: rotate(45deg) scale(.6); }
.hearts span:nth-child(6){ left:61%; bottom:-40px; animation-duration: 26s; animation-delay: 3s;  transform: rotate(45deg) scale(1); }
.hearts span:nth-child(7){ left:72%; bottom:-55px; animation-duration: 20s; animation-delay: 1.5s;transform: rotate(45deg) scale(.85); }
.hearts span:nth-child(8){ left:80%; bottom:-25px; animation-duration: 23s; animation-delay: 2.5s;transform: rotate(45deg) scale(.75); }
.hearts span:nth-child(9){ left:88%; bottom:-65px; animation-duration: 17s; animation-delay: 0.3s;transform: rotate(45deg) scale(.95); }
.hearts span:nth-child(10){left:95%; bottom:-35px; animation-duration: 27s; animation-delay: 5s; transform: rotate(45deg) scale(.65); }

@keyframes floatUp{
  0%{ transform: translateY(0) rotate(45deg); filter: blur(0px); }
  100%{ transform: translateY(-120vh) rotate(45deg); filter: blur(1px); }
}

/* 头部 hero */
.hero{
  position:relative;
  z-index:1;
  min-height: 92vh;
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 26px;
  align-items:center;
  padding: 56px clamp(18px, 4vw, 64px);
}

.hero__content{
  max-width: 720px;
}

.badge{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding: 8px 14px;
  border:1px solid var(--border);
  background: #ffffff0d;
  border-radius: 999px;
  color: var(--muted);
  box-shadow: var(--shadow);
}

.title{
  margin: 18px 0 10px;
  letter-spacing:.5px;
}
.title__line{
  display:block;
  font-size: clamp(34px, 5vw, 56px);
  line-height:1.08;
}
.title__name{
  display:block;
  font-size: clamp(18px, 2.2vw, 26px);
  color: var(--accent);
  margin-top: 6px;
}
.subtitle{
  margin:0 0 18px;
  font-size: 16px;
  color: var(--muted);
  line-height:1.7;
}

.hero__cta{ display:flex; gap:12px; flex-wrap:wrap; margin: 14px 0 18px; }

.btn{
  border: 1px solid var(--border);
  background: #ffffff0d;
  color: var(--text);
  padding: 12px 16px;
  border-radius: 14px;
  cursor:pointer;
  font-weight: 600;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
}
.btn:hover{ transform: translateY(-1px); background:#ffffff15; border-color:#ffffff33; }
.btn:active{ transform: translateY(0px); }

.btn--primary{
  border-color:#ffffff33;
  background: linear-gradient(135deg, #ff7bb0, #ffd76a);
  color:#1b1530;
}
.btn--primary:hover{ background: linear-gradient(135deg, #ff8dc2, #ffe08b); }

.btn--ghost{ background:#ffffff0b; }

.btn--small{ padding: 10px 12px; border-radius: 12px; }

.timer{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin: 10px 0 6px;
}
.timer__item{
  min-width: 74px;
  padding: 10px 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #ffffff0b;
  box-shadow: var(--shadow);
}
.timer__num{
  font-size: 22px;
  font-weight: 700;
}
.timer__label{
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.hint{
  margin-top: 12px;
  color: #b8bdd8;
  font-size: 13px;
}

.hero__card{
  border:1px solid var(--border);
  background: linear-gradient(180deg, #ffffff12, #ffffff08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.mini__row{
  display:flex;
  justify-content:space-between;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed #ffffff20;
}
.mini__row:last-of-type{ border-bottom:none; }
.mini__k{ color: var(--muted); }
.mini__v{ text-align:right; max-width: 64%; }

.pass{ display:flex; gap:10px; margin-top: 10px; }
.pass__input{
  flex:1;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background:#0d1227;
  color: var(--text);
  outline:none;
}
.pass__input:focus{ border-color:#ffffff44; }

.easter{
  margin-top: 14px;
  border:1px solid #ffffff26;
  background:#ffffff0d;
  border-radius: 16px;
  padding: 12px 14px;
}
.easter__title{ margin:0 0 6px; font-weight:700; color: var(--accent); }
.easter__text{ margin:0; color: var(--text); line-height:1.7; }

/* 主体 */
.main{
  position:relative;
  z-index:1;
  padding: 0 clamp(18px, 4vw, 64px) 60px;
}
.section{
  margin: 34px auto;
  max-width: 1060px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #ffffff10, #ffffff08);
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: var(--shadow);
}
.section__title{
  margin: 0 0 8px;
  font-size: 20px;
}
.section__desc{
  margin: 0 0 18px;
  color: var(--muted);
  line-height:1.7;
}

.gallery{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.photo{
  margin:0;
  border: 1px solid #ffffff22;
  border-radius: 16px;
  overflow:hidden;
  background:#0d1227;
}
.photo img{
  display:block;
  width:100%;
  height: 220px;
  object-fit: cover;
}
.photo figcaption{
  padding: 10px 12px;
  font-size: 13px;
  color: var(--muted);
}

.cards{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.card{
  border: 1px solid #ffffff22;
  border-radius: 16px;
  background: #0d1227;
  padding: 14px;
}
.card h3{ margin:0 0 8px; font-size: 16px; }
.card p{ margin:0; color: var(--muted); line-height:1.75; }

.list{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height:1.9;
}

.longtext{
  border: 1px solid #ffffff22;
  background: #0d1227;
  border-radius: 16px;
  padding: 14px;
  color: var(--muted);
  line-height: 1.9;
}
.longtext p{ margin: 0 0 10px; }
.longtext .sign{ margin: 0; color: var(--text); font-weight:600; }

.footer{
  position:relative;
  z-index:1;
  padding: 30px 18px 40px;
  text-align:center;
  color: #aeb4d6;
}

/* 弹窗 */
.modal{
  position:fixed;
  inset:0;
  display:none;
  z-index:50;
}
.modal.is-open{ display:block; }
.modal__backdrop{
  position:absolute;
  inset:0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(6px);
}
.modal__panel{
  position:relative;
  width:min(720px, calc(100% - 28px));
  margin: 10vh auto 0;
  border: 1px solid #ffffff22;
  background: linear-gradient(180deg, #0e1330, #0b1020);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 18px;
}
.modal__close{
  position:absolute;
  top: 10px;
  right: 12px;
  width: 40px;
  height: 40px;
  border-radius: 14px;
  border: 1px solid #ffffff22;
  background: #ffffff0b;
  color: var(--text);
  font-size: 24px;
  cursor:pointer;
}

.envelope{
  position:relative;
  overflow:hidden;
  border-radius: 18px;
  border: 1px solid #ffffff22;
}
.envelope__top{
  height: 140px;
  background: linear-gradient(135deg, #ff7bb0, #ffd76a);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}
.envelope__body{
  padding: 16px 14px 18px;
  background:#0d1227;
}
.letter{
  border-radius: 16px;
  border: 1px solid #ffffff22;
  padding: 14px;
  background: #ffffff06;
}
.letter__title{ margin:0 0 10px; font-weight:700; color: var(--accent); }
.letter p{ margin:0 0 10px; color: var(--muted); line-height:1.9; }
.letter__sign{ margin:0; color: var(--text); font-weight:600; }

/* 响应式 */
@media (max-width: 980px){
  .hero{ grid-template-columns: 1fr; min-height: auto; padding-top: 42px; }
  .hero__card{ order: -1; }
  .mini__v{ max-width: 70%; }
  .gallery{ grid-template-columns: repeat(2, 1fr); }
  .cards{ grid-template-columns: 1fr; }
  .photo img{ height: 200px; }
}

@media (max-width: 460px){
  .timer__item{ min-width: 66px; }
  .photo img{ height: 170px; }
}