:root{--accent:#fe2c55;--bg:#000;--safe-bottom:env(safe-area-inset-bottom,0px)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body,html{margin:0;padding:0;height:100%;background:#101012;color:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;overscroll-behavior:none}button{font-family:inherit;color:inherit;border:none;background:none;cursor:pointer;padding:0}.app{position:relative;width:100%;max-width:480px;height:100dvh;margin:0 auto;background:var(--bg);overflow:hidden}@media (min-width:481px){.app{height:min(100dvh,900px);margin-top:max(0px,calc((100dvh - 900px) / 2));border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.6)}}.feed{height:100%;overflow-y:scroll;scroll-snap-type:y mandatory;scrollbar-width:none;-webkit-overflow-scrolling:touch}.feed::-webkit-scrollbar{display:none}.card{position:relative;scroll-snap-align:start;scroll-snap-stop:always;overflow:hidden}.card,.card video{height:100%;background:#000}.card video{width:100%;object-fit:cover}.card video,.card:after{position:absolute;inset:0}.card:after{content:"";pointer-events:none;background:linear-gradient(180deg,rgba(0,0,0,.45) 0,transparent 22%,transparent 60%,rgba(0,0,0,.55))}.tap-layer{position:absolute;inset:0;z-index:1}.play-indicator{position:absolute;inset:0;display:grid;place-items:center;z-index:2;pointer-events:none;opacity:0;transition:opacity .15s ease}.play-indicator.show{opacity:1}.play-indicator svg{width:76px;height:76px;filter:drop-shadow(0 2px 8px rgba(0,0,0,.5));opacity:.9}.heart-burst{position:absolute;z-index:3;pointer-events:none;transform:translate(-50%,-50%) scale(0);animation:burst .7s ease forwards;color:var(--accent);filter:drop-shadow(0 2px 10px rgba(0,0,0,.5))}@keyframes burst{0%{transform:translate(-50%,-50%) scale(0) rotate(-15deg);opacity:0}30%{transform:translate(-50%,-50%) scale(1.15) rotate(-8deg);opacity:1}to{transform:translate(-50%,-50%) scale(.95) rotate(-8deg);opacity:0}}.topbar{position:absolute;top:0;left:0;right:0;z-index:5;display:flex;justify-content:center;gap:22px;padding:calc(env(safe-area-inset-top, 0px) + 14px) 0 14px;font-weight:600;font-size:16px}.topbar button{color:hsla(0,0%,100%,.6);position:relative;padding-bottom:4px}.topbar button.active{color:#fff}.topbar button.active:after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:24px;height:3px;border-radius:2px;background:#fff}.meta{position:absolute;left:12px;right:84px;bottom:calc(20px + var(--safe-bottom));z-index:4}.meta .handle{font-weight:700;font-size:17px;margin-bottom:8px}.meta .caption{font-size:14px;line-height:1.4;margin-bottom:10px;text-shadow:0 1px 3px rgba(0,0,0,.5)}.meta .sound{display:flex;align-items:center;gap:8px;font-size:13px}.meta .sound>span svg{width:15px;height:15px;display:block}.meta .sound .ticker{overflow:hidden;white-space:nowrap}.meta .sound .ticker span{display:inline-block;animation:marquee 9s linear infinite}@keyframes marquee{0%{transform:translateX(0)}to{transform:translateX(-50%)}}.rail{position:absolute;right:8px;bottom:calc(24px + var(--safe-bottom));z-index:4;display:flex;flex-direction:column;align-items:center;gap:20px}.rail .avatar-wrap{position:relative;margin-bottom:6px}.avatar{width:48px;height:48px;border-radius:50%;border:2px solid #fff;display:grid;place-items:center;font-weight:700;font-size:18px}.follow-badge{position:absolute;left:50%;bottom:-9px;transform:translateX(-50%);width:22px;height:22px;border-radius:50%;background:var(--accent);display:grid;place-items:center}.follow-badge svg{width:14px;height:14px}.action{display:flex;flex-direction:column;align-items:center;gap:5px}.action svg{width:36px;height:36px;filter:drop-shadow(0 1px 4px rgba(0,0,0,.4))}.action .count{font-size:12px;font-weight:600}.action.liked svg{color:var(--accent)}.action:active svg{transform:scale(.86)}.disc{width:48px;height:48px;border-radius:50%;background:radial-gradient(circle,#333 30%,#111 31%,#000 60%);display:grid;place-items:center;animation:spin 4s linear infinite;box-shadow:inset 0 0 0 6px hsla(0,0%,100%,.08)}.disc .note{width:18px;height:18px}@keyframes spin{to{transform:rotate(1turn)}}.mute{position:absolute;top:calc(env(safe-area-inset-top, 0px) + 12px);right:12px;z-index:6;width:38px;height:38px;border-radius:50%;background:rgba(0,0,0,.4);display:grid;place-items:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.mute svg{width:20px;height:20px}.sheet-backdrop{position:absolute;inset:0;z-index:20;background:rgba(0,0,0,.35);animation:fade .2s ease}@keyframes fade{0%{opacity:0}}.sheet{position:absolute;left:0;right:0;bottom:0;z-index:21;height:64%;background:#1c1c1e;border-radius:16px 16px 0 0;display:flex;flex-direction:column;animation:slide-up .25s cubic-bezier(.2,.8,.2,1)}@keyframes slide-up{0%{transform:translateY(100%)}}.sheet-header{position:relative;text-align:center;padding:14px;font-weight:600;font-size:15px;border-bottom:1px solid hsla(0,0%,100%,.08)}.sheet-header .grabber{position:absolute;top:7px;left:50%;transform:translateX(-50%);width:36px;height:4px;border-radius:2px;background:hsla(0,0%,100%,.25)}.sheet-header .close{position:absolute;right:14px;top:12px;font-size:22px;color:hsla(0,0%,100%,.7)}.comment-list{flex:1 1;overflow-y:auto;padding:10px 16px;-webkit-overflow-scrolling:touch}.comment{display:flex;gap:10px;padding:10px 0}.comment .c-avatar{width:34px;height:34px;border-radius:50%;flex-shrink:0;background:linear-gradient(135deg,#555,#888);display:grid;place-items:center;font-size:14px;font-weight:700}.comment .c-body .c-user{font-size:13px;color:hsla(0,0%,100%,.6);margin-bottom:2px}.comment .c-body .c-text{font-size:15px;line-height:1.35}.comment .c-time{font-size:11px;margin-top:3px}.comment .c-time,.empty{color:hsla(0,0%,100%,.4)}.empty{text-align:center;padding:40px 0;font-size:14px}.comment-input{display:flex;gap:8px;padding:10px 12px calc(10px + var(--safe-bottom));border-top:1px solid hsla(0,0%,100%,.08);background:#1c1c1e}.comment-input input{flex:1 1;background:#2c2c2e;border:none;border-radius:20px;padding:11px 16px;color:#fff;font-size:15px;outline:none}.comment-input input::placeholder{color:hsla(0,0%,100%,.4)}.comment-input .send{font-weight:700;color:var(--accent);font-size:15px;padding:0 8px}.comment-input .send:disabled{color:hsla(0,0%,100%,.25)}