.dars-platform .dh-chat{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:24px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 30px 70px -40px rgba(0,0,0,.55)}.dars-platform .dh-chat-head{display:flex;align-items:center;gap:12px;padding:18px 24px;border-bottom:1px solid var(--line-2);background:var(--card-2)}.dars-platform .dh-chat-dot{width:12px;height:12px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.15);flex:none}.dars-platform .dh-chat-head-text{display:flex;flex-direction:column;gap:2px}.dars-platform .dh-chat-head-text strong{font-size:18px;font-weight:800}.dars-platform .dh-chat-head-text span{font-size:14px;color:var(--muted);font-weight:500}.dars-platform .dh-chat-log{padding:24px;display:flex;flex-direction:column;gap:12px;overflow-y:auto;max-height:min(480px,55vh);scroll-behavior:smooth}.dars-platform .dh-bubble{max-width:85%;padding:14px 18px;font-size:16px;line-height:1.85;font-weight:500;animation:dh-pop .25s ease both}.dars-platform .dh-bot{align-self:flex-start;background:var(--panel);border:1px solid var(--line-2);color:var(--ink-2);border-radius:4px 18px 18px 18px}.dars-platform .dh-user{align-self:flex-end;background:var(--grad);color:#fff;font-weight:700;border-radius:18px 4px 18px 18px;box-shadow:0 10px 24px -14px rgba(239,86,82,.7)}.dars-platform .dh-msg{display:flex;flex-direction:column;gap:6px}.dars-platform .dh-vote-row{display:flex;align-items:center;gap:8px;align-self:flex-start;padding-inline-start:6px}.dars-platform .dh-vote{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid var(--line);border-radius:999px;background:var(--card-2);font-size:15px;line-height:1;cursor:pointer;transition:transform .15s ease,border-color .15s ease}.dars-platform .dh-vote:hover{border-color:var(--coral);transform:translateY(-1px)}.dars-platform .dh-vote-thanks{font-size:13px;font-weight:600;color:var(--muted-2)}.dars-platform .dh-typing{display:inline-flex;gap:6px;align-items:center;padding:16px 20px}.dars-platform .dh-typing span{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:dh-blink 1.1s ease-in-out infinite}.dars-platform .dh-typing span:nth-child(2){animation-delay:.18s}.dars-platform .dh-typing span:nth-child(3){animation-delay:.36s}.dars-platform .dh-chips-area{display:flex;flex-direction:column;gap:14px;border-top:1px dashed var(--line-2);padding:16px 24px 18px}.dars-platform .dh-chip-group{display:flex;flex-direction:column;gap:8px}.dars-platform .dh-chip-group-label{font-size:13px;font-weight:800;letter-spacing:.5px;color:var(--muted-2)}.dars-platform .dh-chips{display:flex;flex-wrap:wrap;gap:8px}.dars-platform .dh-chip{border:1px solid var(--line);background:var(--card-2);color:var(--ink-3);font:inherit;font-size:14.5px;font-weight:700;padding:9px 16px;border-radius:999px;cursor:pointer;transition:border-color .15s ease,color .15s ease,background .15s ease,transform .15s ease}.dars-platform .dh-chip:hover{border-color:var(--coral);color:var(--coral-2);transform:translateY(-1px)}.dars-platform .dh-chip:active{transform:translateY(0)}.dars-platform .dh-chip-muted{color:var(--muted-2);border-style:dashed}.dars-platform .dh-input-row{display:flex;gap:10px;padding:14px 18px;border-top:1px solid var(--line-2);background:var(--card-2)}.dars-platform .dh-input{flex:1;min-width:0;background:var(--panel);border:1px solid var(--line);border-radius:12px;color:var(--ink);font:inherit;font-size:16px;padding:12px 16px}.dars-platform .dh-input::placeholder{color:var(--muted-3)}.dars-platform .dh-input:focus{outline:none;border-color:var(--coral)}.dars-platform .dh-send{border:0;background:var(--grad);color:#fff;font:inherit;font-weight:800;font-size:15px;padding:12px 22px;border-radius:12px;cursor:pointer;transition:filter .15s ease,transform .15s ease}.dars-platform .dh-send:hover:enabled{filter:brightness(1.06)}.dars-platform .dh-send:active:enabled{transform:translateY(1px)}.dars-platform .dh-send:disabled{opacity:.45;cursor:default}.dars-platform .dh-guide-list{display:flex;flex-direction:column;gap:14px}.dars-platform .dh-guide-area{margin:26px 0 4px;color:var(--muted-2);font-weight:800;font-size:15px;letter-spacing:.5px}.dars-platform .dh-guide-item{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden}.dars-platform .dh-guide-item summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 26px;cursor:pointer;font-weight:700;font-size:18px}.dars-platform .dh-guide-item summary::-webkit-details-marker{display:none}.dars-platform .dh-guide-item summary:after{content:"+";color:var(--coral-3);font-size:26px;font-weight:700;flex:none;transition:transform .2s ease}.dars-platform .dh-guide-item[open] summary:after{transform:rotate(45deg)}.dars-platform .dh-guide-sub{margin:6px 0 10px;padding:0 26px;color:var(--ink-3);font-size:16.5px;font-weight:800}.dars-platform .dh-guide-item p{margin:0;padding:0 26px 18px;color:var(--muted);font-size:16px;line-height:1.9}.dars-platform .dh-story{display:grid;grid-template-columns:108px minmax(0,1fr);gap:36px;align-items:start}.dars-platform .dh-acts>.dp-h2{margin-top:12px}.dars-platform .dh-story-lead{margin:18px 0 0;color:var(--muted);font-size:17px;line-height:1.8;font-weight:500;max-width:620px}.dars-platform .dh-rail{position:sticky;top:84px;display:flex;flex-direction:column;gap:4px}.dars-platform .dh-rail-item{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;gap:0 10px;align-items:center;padding:10px 12px;border-radius:12px;border-inline-start:2px solid transparent;color:var(--muted-2);transition:background .15s ease,border-color .15s ease,color .15s ease}.dars-platform .dh-rail-item:hover{background:var(--card-2);border-inline-start-color:var(--coral-3);color:var(--ink-2)}.dars-platform .dh-rail-numeral{font-family:var(--font-sora),sans-serif;font-size:15px;font-weight:700;letter-spacing:1px;color:var(--coral-3)}.dars-platform .dh-rail-label{font-size:14px;font-weight:700;color:inherit}.dars-platform .dh-rail-count{grid-column:2;font-size:12px;font-weight:600;color:var(--muted-3)}.dars-platform .dh-act-head{display:flex;align-items:baseline;gap:14px;margin-top:56px;padding-top:22px;border-top:1px solid var(--line-2);scroll-margin-top:88px}.dars-platform .dh-act{scroll-margin-top:88px}.dars-platform .dh-act-numeral{font-family:var(--font-sora),sans-serif;font-size:14px;font-weight:700;letter-spacing:2px;color:var(--coral-2)}.dars-platform .dh-act-label{margin:0;font-size:clamp(24px,3.4vw,32px);font-weight:800;letter-spacing:-.5px}.dars-platform .dh-act-count{font-size:14px;font-weight:600;color:var(--muted-2)}.dars-platform .dh-ch{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:44px;align-items:center;padding:44px 0;border-bottom:1px solid var(--line-3);scroll-margin-top:88px}.dars-platform .dh-ch:last-child{border-bottom:0}.dars-platform .dh-ch--flip .dh-ch-stage{order:2}.dars-platform .dh-ch-stage{background:var(--panel);border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 40px 80px -50px rgba(0,0,0,.6)}.dars-platform .dh-ch-video{display:block;width:100%;height:auto;max-height:540px;min-height:200px;object-fit:contain;background:#000}.dars-platform .dh-ch-text{display:flex;flex-direction:column;gap:12px;align-items:flex-start}.dars-platform .dh-ch-meta{display:flex;align-items:center;gap:14px}.dars-platform .dh-ch-num{font-size:22px;font-weight:800;color:var(--coral-3);line-height:1}.dars-platform .dh-ch-rule{width:44px;height:1px;background:var(--line);flex:none}.dars-platform .dh-ch-dur{font-size:14px;font-weight:700;color:var(--muted-2)}.dars-platform .dh-ch-tag{font-size:12.5px;font-weight:800;color:#fff;background:var(--grad);border-radius:999px;padding:4px 12px}.dars-platform .dh-ch-title{margin:0;font-size:clamp(22px,2.8vw,30px);font-weight:800;letter-spacing:-.5px;line-height:1.45}.dars-platform .dh-ch-desc{margin:0;color:var(--muted);font-size:16.5px;line-height:1.9;font-weight:500}.dars-platform .dh-ch-area{font-size:13px;font-weight:700;color:var(--ink-3);background:var(--card-2);border:1px solid var(--line);border-radius:999px;padding:5px 13px}.dars-platform .dh-soon{display:flex;flex-wrap:wrap;align-items:baseline;gap:14px;padding:26px 0 4px}.dars-platform .dh-soon-label{font-size:13px;font-weight:800;letter-spacing:1px;color:var(--muted-3)}.dars-platform .dh-soon-list{display:flex;flex-wrap:wrap;gap:8px;flex:1;min-width:0}.dars-platform .dh-soon-item{font-size:13.5px;font-weight:600;color:var(--muted-2);border:1px dashed var(--line);border-radius:999px;padding:6px 13px;scroll-margin-top:88px}@media (max-width:1000px){.dars-platform .dh-story{grid-template-columns:minmax(0,1fr);gap:18px}.dars-platform .dh-rail{position:static;flex-direction:row;gap:8px;overflow-x:auto;padding-bottom:4px}.dars-platform .dh-rail-item{flex:none;grid-template-rows:auto;border-inline-start:0;border:1px solid var(--line);background:var(--card-2);padding:8px 14px}.dars-platform .dh-rail-item:hover{border-color:var(--coral-3)}.dars-platform .dh-rail-count{grid-column:auto}.dars-platform .dh-ch{grid-template-columns:minmax(0,1fr);gap:22px;padding:30px 0}.dars-platform .dh-ch--flip .dh-ch-stage{order:0}.dars-platform .dh-ch-video{max-height:62vh}}@keyframes dh-pop{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes dh-blink{0%,80%,to{opacity:.25}40%{opacity:1}}@media (prefers-reduced-motion:reduce){.dars-platform .dh-bubble{animation:none}.dars-platform .dh-typing span{animation:none;opacity:.6}.dars-platform .dh-chat-log{scroll-behavior:auto}}@media (max-width:520px){.dars-platform .dh-chat{border-radius:18px}.dars-platform .dh-chat-log{padding:16px;max-height:min(420px,60vh)}.dars-platform .dh-bubble{max-width:94%;font-size:15px}.dars-platform .dh-chips-area,.dars-platform .dh-send{padding-inline:16px}}