/* ===== 欢度国庆 · 主题样式 ===== */
:root{
  --red:#c62828;
  --red-deep:#8e0000;
  --gold:#ffd75e;
  --gold-deep:#f0b429;
  --ink:#fff8f0;
  --card:rgba(255,255,255,.10);
  --card-line:rgba(255,215,94,.35);
  --shadow:0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:#2b0708;
  color:var(--ink);
  line-height:1.75;
  overflow-x:hidden;
}
img,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
code{
  background:rgba(0,0,0,.35);border:1px solid var(--card-line);
  border-radius:6px;padding:1px 6px;font-size:.88em;color:var(--gold);
}

/* ==== 背景视频 ==== */
.bg-layer{position:fixed;inset:0;z-index:-2;overflow:hidden}
.bg-video{width:100%;height:100%;object-fit:cover;filter:saturate(1.05)}
.bg-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 80% at 50% 10%, rgba(198,40,40,.35), rgba(43,7,8,.75) 70%),
    linear-gradient(180deg, rgba(60,0,0,.55), rgba(20,0,0,.85));
}
body::before{ /* 细网格纹理，增加质感 */
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.10;
  background-image:linear-gradient(rgba(255,215,94,.6) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,215,94,.6) 1px,transparent 1px);
  background-size:44px 44px;
}

/* ==== 顶栏 ==== */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:14px;
  padding:10px 16px;
  backdrop-filter:blur(10px);
  background:linear-gradient(180deg,rgba(142,0,0,.85),rgba(142,0,0,.45));
  border-bottom:1px solid var(--card-line);
}
.brand{display:flex;align-items:center;gap:6px;font-weight:800;letter-spacing:2px;font-size:17px}
.brand-star{color:var(--gold);animation:twinkle 2.4s ease-in-out infinite}
@keyframes twinkle{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.82)}}
.nav{display:flex;gap:12px;margin-left:auto;flex-wrap:wrap;font-size:14px}
.nav a{padding:4px 10px;border-radius:999px;transition:.25s;white-space:nowrap}
.nav a:hover{background:rgba(255,215,94,.22);color:var(--gold)}
.music-btn{
  margin-left:8px;padding:6px 14px;border:1px solid var(--gold);border-radius:999px;
  background:rgba(255,215,94,.15);color:var(--gold);font-size:14px;cursor:pointer;
  display:flex;align-items:center;gap:6px;transition:.25s;
}
.music-btn:hover{background:var(--gold);color:#7a0000}
.music-btn.playing{animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(255,215,94,.55)}50%{box-shadow:0 0 0 8px rgba(255,215,94,0)}}

/* ==== 首屏 ==== */
.hero{
  min-height:calc(100vh - 60px);display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;padding:40px 18px 70px;position:relative;
}
.hero-inner{max-width:760px}
.hero-eyebrow{
  letter-spacing:.5em;color:var(--gold);font-size:13px;
  border:1px solid var(--card-line);border-radius:999px;display:inline-block;padding:4px 18px;margin-bottom:18px;
}
.hero-title{
  font-size:clamp(52px,15vw,120px);font-weight:900;letter-spacing:.12em;
  display:flex;justify-content:center;gap:.06em;
  background:linear-gradient(180deg,#fff6d5 0%,var(--gold) 45%,var(--gold-deep) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 6px 18px rgba(255,180,0,.35));
}
.hero-title span{animation:rise .8s cubic-bezier(.2,.8,.2,1) both}
.hero-title span:nth-child(2){animation-delay:.12s}
.hero-title span:nth-child(3){animation-delay:.24s}
.hero-title span:nth-child(4){animation-delay:.36s}
@keyframes rise{from{opacity:0;transform:translateY(28px) scale(.9)}to{opacity:1;transform:none}}
.hero-sub{margin-top:14px;font-size:clamp(17px,4.4vw,26px);color:#fff}
.hero-sub b{color:var(--gold);font-size:1.35em}
.hero-desc{margin-top:16px;font-size:15px;color:rgba(255,248,240,.82);line-height:2}
.hero-cta{margin-top:26px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{
  padding:12px 26px;border-radius:999px;font-size:15px;cursor:pointer;border:1px solid transparent;
  transition:.25s;font-weight:700;
}
.btn-primary{background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:#7a0000;box-shadow:0 6px 20px rgba(255,180,0,.35)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08)}
.btn-ghost{border-color:var(--gold);color:var(--gold);background:rgba(0,0,0,.25)}
.btn-ghost:hover{background:rgba(255,215,94,.2)}
.countdown{
  margin-top:30px;display:inline-flex;gap:10px;flex-wrap:wrap;justify-content:center;
  padding:14px 20px;border-radius:16px;background:rgba(0,0,0,.32);
  border:1px solid var(--card-line);backdrop-filter:blur(6px);font-size:14px;
}
.cd-cell{min-width:64px}
.cd-num{display:block;font-size:26px;font-weight:800;color:var(--gold);line-height:1.2}
.cd-lab{font-size:12px;color:rgba(255,248,240,.7)}
.cd-today{font-size:16px;color:var(--gold);font-weight:800;letter-spacing:1px}
.scroll-tip{position:absolute;bottom:22px;left:0;right:0;font-size:13px;color:rgba(255,248,240,.6);animation:float 2s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0);opacity:.6}50%{transform:translateY(8px);opacity:1}}

/* ==== 内容容器 ==== */
.container{max-width:980px;margin:0 auto;padding:0 16px 60px}
.panel{
  margin:34px 0;padding:26px 20px;border-radius:20px;
  background:var(--card);border:1px solid var(--card-line);
  backdrop-filter:blur(8px);box-shadow:var(--shadow);
}
.panel-head{margin-bottom:20px}
.panel-head h2{
  font-size:clamp(20px,5vw,28px);font-weight:800;color:var(--gold);
  padding-left:14px;border-left:5px solid var(--gold);line-height:1.3;
}
.panel-head p{margin-top:10px;font-size:14.5px;color:rgba(255,248,240,.85)}

/* 滚动出现动画 */
.reveal{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ==== 视频 ==== */
.video-wrap{position:relative;border-radius:16px;overflow:hidden;background:#000;box-shadow:0 12px 34px rgba(0,0,0,.5)}
.front-video{width:100%;aspect-ratio:16/9;object-fit:contain;background:#000}
.video-badge{
  position:absolute;left:10px;bottom:10px;padding:4px 10px;border-radius:999px;
  background:rgba(0,0,0,.55);color:var(--gold);font-size:12px;pointer-events:none;
}
.video-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.mini-btn{
  padding:8px 16px;border-radius:999px;border:1px solid var(--card-line);
  background:rgba(0,0,0,.3);color:var(--ink);font-size:14px;cursor:pointer;transition:.2s;
}
.mini-btn:hover{background:var(--gold);color:#7a0000;border-color:var(--gold)}
.mini-btn.play{background:var(--gold);color:#7a0000;font-size:18px;padding:8px 20px}

/* 提示框 */
.tip-box{
  margin-top:16px;padding:14px 16px;border-radius:14px;font-size:14px;
  background:rgba(255,215,94,.12);border:1px dashed var(--card-line);color:rgba(255,248,240,.9);
}
.tip-box b{color:var(--gold)}

/* ==== 时间线 ==== */
.timeline{list-style:none;position:relative;padding-left:22px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--gold),rgba(255,215,94,.15))}
.timeline li{position:relative;margin-bottom:18px}
.time-dot{position:absolute;left:-22px;top:10px;width:12px;height:12px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(255,215,94,.22)}
.time-card{padding:14px 16px;border-radius:14px;background:rgba(0,0,0,.28);border:1px solid rgba(255,215,94,.18)}
.time-card h3{font-size:16px;color:var(--gold);margin-bottom:6px}
.time-card p{font-size:14px;color:rgba(255,248,240,.85)}

/* ==== 国旗含义 ==== */
.flag-meaning{display:flex;gap:22px;flex-wrap:wrap;align-items:flex-start}
.flag-visual{flex:0 0 220px;text-align:center}
.mini-flag{
  position:relative;width:200px;aspect-ratio:3/2;border-radius:8px;
  background:linear-gradient(135deg,#e53935,#b71c1c);
  box-shadow:0 10px 26px rgba(0,0,0,.45);overflow:hidden;
}
.mini-star{position:absolute;color:var(--gold);font-size:14px;line-height:1}
.mini-star.big{font-size:44px;left:16px;top:20px}
.mini-star.s1{left:74px;top:8px}
.mini-star.s2{left:96px;top:30px}
.mini-star.s3{left:96px;top:58px}
.mini-star.s4{left:74px;top:80px}
.flag-cap{margin-top:10px;font-size:13px;color:rgba(255,248,240,.7)}
.flag-text{flex:1 1 320px;font-size:14.5px;color:rgba(255,248,240,.9)}
.flag-text p{margin-bottom:12px}
.flag-text b{color:var(--gold)}

/* ==== 数字卡 ==== */
.num-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}
.num-card{
  padding:18px;border-radius:16px;text-align:center;
  background:linear-gradient(160deg,rgba(198,40,40,.5),rgba(0,0,0,.35));
  border:1px solid var(--card-line);
}
.num-card b{display:block;font-size:32px;color:var(--gold);font-weight:900;line-height:1.2}
.num-card span{display:block;font-size:14px;margin-top:6px;font-weight:700}
.num-card i{display:block;font-style:normal;font-size:12.5px;margin-top:8px;color:rgba(255,248,240,.65);line-height:1.6}

/* ==== 祝福语 ==== */
.bless-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}
.bless-item{
  text-align:left;padding:16px;border-radius:14px;cursor:pointer;font-size:14.5px;line-height:1.7;
  background:rgba(0,0,0,.28);border:1px solid rgba(255,215,94,.22);color:var(--ink);
  transition:.25s;font-family:inherit;
}
.bless-item:hover{background:rgba(255,215,94,.18);border-color:var(--gold);transform:translateY(-3px)}

/* ==== 诗词 ==== */
.poem-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.poem-card{
  padding:20px 18px;border-radius:16px;text-align:center;
  background:rgba(0,0,0,.3);border:1px solid rgba(255,215,94,.2);
}
.poem-line{font-size:17px;color:var(--gold);letter-spacing:1px;line-height:1.9}
.poem-by{margin-top:10px;font-size:13px;color:rgba(255,248,240,.65)}

/* ==== 祝福墙 ==== */
.wish-form{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}
.wish-form input,.wish-form textarea{
  width:100%;padding:12px 14px;border-radius:12px;font-family:inherit;font-size:15px;
  background:rgba(0,0,0,.35);border:1px solid rgba(255,215,94,.25);color:var(--ink);resize:vertical;
}
.wish-form textarea{min-height:88px}
.wish-form input:focus,.wish-form textarea:focus{outline:none;border-color:var(--gold)}
.wish-form button{align-self:flex-start}
.wish-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.wish-card{
  position:relative;padding:14px 16px;border-radius:14px;
  background:linear-gradient(150deg,rgba(255,215,94,.16),rgba(0,0,0,.3));
  border:1px solid rgba(255,215,94,.25);
}
.wish-card p{font-size:14.5px;line-height:1.7}
.wish-card .who{margin-top:8px;font-size:12.5px;color:var(--gold)}
.wish-card .del{
  position:absolute;right:8px;top:6px;background:none;border:none;color:rgba(255,248,240,.5);
  cursor:pointer;font-size:16px;
}
.wish-card .del:hover{color:#ff8a80}
.wish-empty{grid-column:1/-1;text-align:center;font-size:14px;color:rgba(255,248,240,.6);padding:16px}

/* ==== 播放器 ==== */
.player{
  padding:18px;border-radius:16px;background:rgba(0,0,0,.32);border:1px solid var(--card-line);
}
.player-info{display:flex;align-items:center;gap:14px}
.cover{
  width:56px;height:56px;flex:0 0 56px;border-radius:14px;display:grid;place-items:center;font-size:24px;
  background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:#7a0000;
}
.np-title{font-size:16px;font-weight:700;color:var(--gold)}
.np-hint{font-size:13px;color:rgba(255,248,240,.65)}
.player-ctrl{display:flex;align-items:center;gap:12px;margin:16px 0 10px;flex-wrap:wrap}
#volume{width:130px;accent-color:var(--gold)}
.player-progress{height:6px;border-radius:999px;background:rgba(255,255,255,.15);overflow:hidden}
#progressBar{height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--gold-deep));transition:width .2s}
.play-list{margin:14px 0 0;padding-left:20px;font-size:14px;line-height:2}
.play-list li{cursor:pointer;transition:.2s}
.play-list li:hover{color:var(--gold)}
.play-list li.active{color:var(--gold);font-weight:800}
.import-row{display:flex;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap}
.file-btn{display:inline-flex;align-items:center}
.import-hint{font-size:12.5px;color:rgba(255,248,240,.6)}

/* ==== 文件夹说明 ==== */
.folder-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px}
.folder-card{padding:16px;border-radius:16px;background:rgba(0,0,0,.28);border:1px solid rgba(255,215,94,.2)}
.folder-card h3{font-size:15.5px;color:var(--gold);margin-bottom:8px}
.folder-card p{font-size:14px;color:rgba(255,248,240,.82)}

/* ==== 页脚 ==== */
.footer{
  text-align:center;padding:30px 18px 46px;font-size:14px;color:rgba(255,248,240,.75);
  border-top:1px solid rgba(255,215,94,.25);background:rgba(0,0,0,.35);
}
.foot-small{margin-top:10px;font-size:12px;line-height:1.8;color:rgba(255,248,240,.5)}

/* ==== 吐司 ==== */
.toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,20px);
  padding:10px 20px;border-radius:999px;background:rgba(0,0,0,.85);color:var(--gold);
  font-size:14px;opacity:0;pointer-events:none;transition:.3s;z-index:99;
  border:1px solid var(--card-line);
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ==== 移动端 ==== */
@media (max-width:640px){
  .nav{display:none}
  .music-btn{margin-left:auto}
  .hero{min-height:auto;padding:50px 16px 70px}
  .panel{padding:20px 14px;border-radius:16px}
  .flag-visual{flex:1 1 100%}
  .mini-flag{margin:0 auto}
  .scroll-tip{display:none}
}