/* 黎川树洞 · 样式表 */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #0b1520;
  background-image:
    radial-gradient(ellipse 60% 40% at 20% 0%, rgba(78,205,196,.18), transparent),
    radial-gradient(ellipse 50% 35% at 85% 20%, rgba(255,126,95,.14), transparent),
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(69,104,162,.18), transparent);
  background-attachment: fixed;
  min-height: 100vh;
  color: #eaf6f6;
  overflow-x: hidden;
}

/* ---------- 流动线条背景 ---------- */
#bg-lines {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  width: 100%; height: 100%;
  filter: blur(1.2px) saturate(1.1); /* 整体柔化，去掉生硬边缘 */
}

/* ---------- 三栏布局 ---------- */
.layout {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 250px minmax(0, 820px) 250px;
  gap: 28px;
  justify-content: center;
  align-items: start;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 16px;
}
.center { width: 100%; }

/* ---------- 侧栏面板 ---------- */
.side { position: sticky; top: 24px; display: flex; flex-direction: column; gap: 20px; animation: fadeUp .9s ease both; }
.side.left { animation-delay: .15s; }
.side.right { animation-delay: .3s; }

.panel {
  background: linear-gradient(150deg, rgba(255,255,255,.09), rgba(255,255,255,.04));
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 22px;
  padding: 24px 20px;
  box-shadow: 0 8px 32px rgba(4,12,20,.35), inset 0 1px 0 rgba(255,255,255,.12);
  transition: border-color .35s ease, box-shadow .35s ease, transform .35s ease;
}
.panel:hover {
  border-color: rgba(148,232,226,.4);
  box-shadow: 0 14px 40px rgba(4,12,20,.45), 0 0 28px rgba(78,205,196,.12), inset 0 1px 0 rgba(255,255,255,.16);
  transform: translateY(-3px);
}
.panel h3 { font-size: 16px; color: #7fe0d6; letter-spacing: 2px; margin-bottom: 16px; }

.team ul { list-style: none; }
.team li {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 6px; font-size: 15px; color: #cfe6e6;
  border-bottom: 1px dashed rgba(255,255,255,.08);
}
.team li:last-child { border-bottom: none; }
.team .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: linear-gradient(135deg, #4ecdc4, #ff7e5f);
  box-shadow: 0 0 10px rgba(78,205,196,.8);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.5); opacity: .6; } }

/* ---------- 音乐面板 ---------- */
.music { text-align: center; }
.disc {
  width: 130px; height: 130px; margin: 12px auto;
  border-radius: 50%;
  background: conic-gradient(from 0deg, #1c3a3f, #2c5364, #1c3a3f, #2c5364, #1c3a3f);
  border: 2px solid rgba(148,232,226,.4);
  display: flex; align-items: center; justify-content: center;
  animation: spin 9s cubic-bezier(.45,.05,.55,.95) infinite; /* 缓入缓出，转动更优雅 */
  animation-play-state: paused;
  box-shadow: 0 0 30px rgba(78,205,196,.28), inset 0 0 18px rgba(0,0,0,.4);
}
.disc.playing { animation-play-state: running; }
.disc-center {
  width: 50px; height: 50px; border-radius: 50%;
  background: #0b1520; border: 1px solid rgba(255,255,255,.18);
  box-shadow: inset 0 2px 6px rgba(0,0,0,.5);
  display: flex; align-items: center; justify-content: center; font-size: 22px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.music-name { font-size: 14px; color: #cfe6e6; margin-top: 6px; }
.music-controls { margin-top: 14px; }
#music-btn {
  width: 52px; height: 52px; border-radius: 50%;
  border: 1px solid rgba(148,232,226,.5); cursor: pointer;
  background: linear-gradient(135deg, rgba(78,205,196,.25), rgba(255,126,95,.2));
  backdrop-filter: blur(10px);
  color: #7fe0d6; font-size: 19px;
  box-shadow: 0 6px 18px rgba(4,12,20,.4), inset 0 1px 0 rgba(255,255,255,.15);
  transition: transform .3s cubic-bezier(.34,1.56,.64,1), background .25s, color .25s, box-shadow .25s;
}
#music-btn:hover {
  transform: scale(1.12);
  background: linear-gradient(135deg, #4ecdc4, #3aa8a0);
  color: #0b1520;
  box-shadow: 0 10px 26px rgba(78,205,196,.35);
}
.music-hint { font-size: 12px; color: #6d9494; margin-top: 12px; line-height: 1.6; }

/* ---------- 页头 ---------- */
header { text-align: center; padding: 56px 20px 16px; animation: fadeUp .8s ease both; }

.avatar-ring {
  width: 150px; height: 150px; border-radius: 50%; padding: 5px;
  background: conic-gradient(from 0deg, #4ecdc4, #44a08d, #ff7e5f, #4ecdc4);
  margin: 0 auto 22px;
  box-shadow: 0 0 46px rgba(78,205,196,.4);
  animation: float 5s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
.avatar-ring img {
  width: 100%; height: 100%; border-radius: 50%; object-fit: cover; display: block;
  border: 4px solid #0b1520;
}

h1 { font-size: 36px; letter-spacing: 8px; font-weight: 700; }
h1 span { color: #4ecdc4; }

.divider {
  width: 56px; height: 3px; margin: 14px auto 0; border-radius: 2px;
  background: linear-gradient(90deg, #4ecdc4, #ff7e5f);
}

.slogan { margin-top: 14px; color: #93b8bd; font-size: 15px; letter-spacing: 3px; }

/* ---------- 主体 ---------- */
main { width: 100%; padding: 24px 0 40px; }

section { margin-top: 40px; }
section.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
section.reveal.visible { opacity: 1; transform: none; }

h2 {
  font-size: 16px; color: #7fe0d6; margin-bottom: 20px; letter-spacing: 4px;
  display: flex; align-items: center; gap: 10px;
}
h2::before { content: ""; width: 4px; height: 16px; border-radius: 2px; background: linear-gradient(#ff7e5f, #feb47b); }
h2::after { content: ""; flex: 1; height: 1px; background: rgba(127,224,214,.18); }

/* ---------- 卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }

.card {
  position: relative; overflow: hidden;
  background: linear-gradient(150deg, rgba(255,255,255,.09), rgba(255,255,255,.035));
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 20px; padding: 26px;
  box-shadow: 0 8px 32px rgba(4,12,20,.35), inset 0 1px 0 rgba(255,255,255,.12);
  text-decoration: none; color: #eaf6f6;
  transition: transform .35s cubic-bezier(.22,.61,.36,1), box-shadow .35s ease, border-color .35s ease;
  display: flex; flex-direction: column; gap: 10px;
}
.card::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(78,205,196,.14), transparent 55%);
  opacity: 0; transition: opacity .35s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(148,232,226,.45);
  box-shadow: 0 16px 44px rgba(4,12,20,.5), 0 0 30px rgba(78,205,196,.1), inset 0 1px 0 rgba(255,255,255,.16);
}
.card:hover::before { opacity: 1; }

.card .top { display: flex; align-items: center; gap: 14px; }
.card .tag {
  width: 52px; height: 52px; border-radius: 14px; font-size: 26px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.1);
  flex-shrink: 0;
}
.card .name { font-size: 18px; font-weight: 700; }
.card .desc { font-size: 13.5px; color: #93b8bd; line-height: 1.7; }

.card .btn {
  align-self: flex-start; margin-top: 4px;
  background: linear-gradient(90deg, #ff7e5f, #feb47b);
  color: #fff; font-size: 13px; padding: 7px 18px; border-radius: 20px;
  letter-spacing: 1px; transition: filter .2s;
}
.card:hover .btn { filter: brightness(1.12); }

.card.sponsor .tag { background: rgba(255,126,95,.15); border-color: rgba(255,126,95,.3); }
.card.sponsor .btn { background: linear-gradient(90deg, #ff7e5f, #ff9966); }

/* ---------- 赞助页 ---------- */
.sub-title { color: #a8bfae; margin: 16px 0 0; font-size: 14.5px; letter-spacing: 1px; }

.qr-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }

.qr {
  background: linear-gradient(150deg, rgba(255,255,255,.09), rgba(255,255,255,.04));
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 22px; padding: 30px 26px; text-align: center;
  box-shadow: 0 8px 32px rgba(4,12,20,.35), inset 0 1px 0 rgba(255,255,255,.12);
  transition: transform .35s cubic-bezier(.22,.61,.36,1), border-color .35s ease, box-shadow .35s ease;
}
.qr:hover {
  transform: translateY(-6px);
  border-color: rgba(148,232,226,.45);
  box-shadow: 0 16px 44px rgba(4,12,20,.5), 0 0 30px rgba(78,205,196,.1), inset 0 1px 0 rgba(255,255,255,.16);
}
.qr .icon { font-size: 30px; }
.qr h3 { font-size: 18px; margin-top: 10px; letter-spacing: 2px; }
.qr img {
  width: 200px; height: 200px; object-fit: cover;
  margin: 16px auto 0; border-radius: 14px; display: block;
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: 0 8px 22px rgba(0,0,0,.35);
}
.qr p { font-size: 13px; color: #93b8bd; margin-top: 14px; line-height: 1.7; }

.back {
  display: inline-block; margin: 34px auto 0;
  color: #7fe0d6; text-decoration: none; font-size: 14px; letter-spacing: 1px;
  border: 1px solid rgba(127,224,214,.5); padding: 9px 26px; border-radius: 22px;
  transition: background .2s, color .2s;
}
.back:hover { background: #7fe0d6; color: #0b1520; }

footer { color: #5b7f85; font-size: 12px; padding: 28px 20px 34px; text-align: center; letter-spacing: 1px; }

/* ---------- 动画 ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

/* ---------- 响应式 ---------- */
@media (max-width: 1140px) {
  .layout { grid-template-columns: 220px minmax(0, 1fr); }
  .side.right { grid-column: 1 / -1; position: static; flex-direction: row; justify-content: center; }
  .side.right .music { width: 320px; }
}
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  .side { position: static; }
}
@media (max-width: 480px) {
  h1 { font-size: 28px; letter-spacing: 5px; }
  .cards { grid-template-columns: 1fr; }
  .qr-grid { grid-template-columns: 1fr; }
}