.particles-container{position:relative;width:100%;height:100%}@font-face{font-family:FZPSHJW;src:url("../assets/optimized/FZPSHJW.woff2") format("woff2");font-weight:400;font-style:normal;font-display:block}.text-sequence{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none;z-index:1}.text-sequence__line{margin:0;padding:0 1.5rem;text-align:center;color:#8f4338;font-family:FZPSHJW,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:clamp(1.8rem,4vw,3.2rem);font-weight:400;line-height:1.6;letter-spacing:.12em;text-shadow:0 2px 24px rgba(0,0,0,.5);opacity:0;transition:opacity .3s ease-in-out}.text-sequence__line--visible{opacity:1}.intro-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:1}.intro-line{margin:0;padding:0 1.5rem;text-align:center;color:#8f4338;font-family:FZPSHJW,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:clamp(1.8rem,4vw,3.2rem);font-weight:400;line-height:1.6;letter-spacing:.12em;text-shadow:0 2px 24px rgba(0,0,0,.5);opacity:1;animation:intro-line-in .6s ease-out}.intro-start{margin-top:2.2rem;padding:.2rem .3rem .2rem .9rem;border-radius:999px;border:1px solid rgba(143,67,56,.38);background:linear-gradient(135deg,#fffcf6b8,#fff4e680);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);cursor:pointer;display:flex;align-items:center;gap:.7rem;animation:intro-breathe 3.2s ease-in-out infinite;transition:opacity .3s ease,transform .3s ease,border-color .3s ease}.intro-start:hover{transform:translateY(-1px);border-color:#8f43389e}.intro-start:hover .intro-start__arrow{transform:translate(2px,-2px)}.intro-start__label{font-size:1.05rem;color:#8f4338;letter-spacing:.42em;margin-right:-.42em;font-family:FZPSHJW,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}.intro-start__arrow{width:30px;height:30px;border-radius:50%;border:1px solid rgba(143,67,56,.55);background:#ffffff59;color:#8f4338;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:transform .3s ease}.intro-start__arrow svg{width:15px;height:15px}.intro-overlay--leaving{opacity:0;transition:opacity .3s ease}.intro-start--leaving{animation:none;transform:scale(.9)}@keyframes intro-breathe{0%,to{box-shadow:0 0 #8f433829,0 4px 18px #8f43381f}50%{box-shadow:0 0 0 10px #8f433800,0 6px 22px #8f43382e}}@keyframes intro-line-in{0%{opacity:0}to{opacity:1}}.opening-scene{height:100vh;height:100svh;min-height:280px}.opening-sound,.opening-enter,.opening-audio-retry{position:absolute;z-index:3;color:#8f4338;border:1px solid rgba(143,67,56,.38);border-radius:999px;background:#fffcf6db;padding:12px 20px;font:15px/1.4 FZPSHJW,PingFang SC,sans-serif;cursor:pointer}.opening-sound{top:max(18px,env(safe-area-inset-top));right:20px}.opening-enter{top:calc(50% + 100px);left:50%;transform:translate(-50%);white-space:nowrap}.opening-audio-retry{left:20px;top:max(18px,env(safe-area-inset-top));max-width:55%}button:focus-visible{outline:3px solid #8f4338;outline-offset:4px}@media (max-width: 600px){.intro-line,.text-sequence__line{font-size:clamp(22px,5.5vw,32px);letter-spacing:.06em}.opening-sound,.opening-audio-retry{font-size:13px;padding:10px 14px}}@media (max-height: 440px){.intro-line,.text-sequence__line{font-size:24px}.intro-start{margin-top:1rem}.opening-enter{top:calc(50% + 60px)}}@media (prefers-reduced-motion: reduce){.intro-start,.intro-line{animation:none!important}}