:root{
  --bg:#f6f7fb; --panel:#ffffff; --panel2:#f3f4fa; --line:#e7e9f2;
  --text:#101327; --ink2:#3a4060; --muted:#6b7191;
  --accent:#5b6cff; --accent2:#16c2e6; --violet:#9b5cff;
  --danger:#e2574a; --ok:#15a06a; --radius:13px;
  --grad:linear-gradient(100deg,#5b6cff 0%,#9b5cff 55%,#16c2e6 100%);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:14px;line-height:1.55}
a{color:var(--accent);text-decoration:none}
.muted{color:var(--muted)} .small{font-size:12px} .err{color:var(--danger)}

/* 顶栏(编辑器)—— 与落地页导航一致的浅色 */
.topbar{display:flex;align-items:center;gap:12px;padding:12px 22px;
  background:rgba(255,255,255,.8);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.brand{font-weight:800;font-size:16px;color:var(--text);letter-spacing:-.01em}
.tag{font-size:11px;color:var(--muted);border:1px solid var(--line);padding:2px 9px;border-radius:20px}
.container{max-width:1180px;margin:0 auto;padding:24px 20px 70px}

/* 表单 */
input,select,textarea,button{font:inherit}
input,select,textarea{width:100%;background:#fff;border:1px solid var(--line);
  color:var(--text);border-radius:9px;padding:9px 11px;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(91,108,255,.12)}
textarea{resize:vertical}
label{display:block;font-size:12px;color:var(--muted);margin-bottom:10px}
label input,label select,label textarea{margin-top:4px}
label.check,label.check input{display:inline-flex;width:auto;align-items:center;gap:6px;margin:0}
.row{display:flex;gap:10px;flex-wrap:wrap}
.row>label{flex:1;min-width:120px}
.row>label.grow{flex:3}
button{cursor:pointer;background:var(--accent);color:#fff;border:none;border-radius:9px;
  padding:9px 15px;font-weight:600;box-shadow:0 4px 12px rgba(91,108,255,.22)}
button:hover{filter:brightness(1.06)}
button:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}
button.ghost{background:#fff;color:var(--text);border:1px solid var(--line);box-shadow:none}
button.ghost:hover{border-color:var(--accent);color:var(--accent)}
button.primary{background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(91,108,255,.28)}
button.danger,button.ghost.danger{color:var(--danger);background:#fff;border:1px solid var(--line);box-shadow:none}
button.ghost.danger:hover{border-color:var(--danger)}
button.tiny{padding:3px 9px;font-size:12px;box-shadow:none}

/* 编辑器布局 */
.editor-head{display:flex;align-items:baseline;gap:14px;margin-bottom:16px}
.editor-head h1{margin:0;font-size:22px;letter-spacing:-.01em}
.back{color:var(--muted)}
.render-panel{margin-bottom:18px}
.layout{display:grid;grid-template-columns:340px 1fr;gap:18px;align-items:start}
@media(max-width:880px){.layout{grid-template-columns:1fr}}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;margin-bottom:16px;box-shadow:0 1px 3px rgba(20,24,60,.04)}
.panel h3{margin:0 0 12px;font-size:15px}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.panel-head h3{margin:0}
.sidebar{position:sticky;top:74px}

/* 分镜卡 */
.scene{background:var(--panel2);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:11px;padding:13px;margin-bottom:12px}
.scene.kind-title{border-left-color:var(--violet);background:#f1f3ff}
.scene-top{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.scene-top select{width:auto;flex:0 0 auto}
.scene-top input[type=color]{width:34px;height:34px;padding:2px;flex:0 0 auto;border-radius:8px}
.scene-top .spacer{flex:1}
.num{font-weight:800;color:var(--muted);font-variant-numeric:tabular-nums}
.scene textarea,.scene>input{margin-bottom:8px;background:#fff}
.title-fields{display:flex;gap:8px;margin-bottom:8px}
.callout-row{margin-top:2px}
.actions-bar{display:flex;justify-content:flex-end;gap:10px;position:sticky;bottom:0;
  padding:14px 0;background:linear-gradient(transparent,var(--bg) 45%)}

/* 素材缩略图 */
.thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}
.thumbs figure{margin:0}
.thumbs img{width:100%;height:60px;object-fit:cover;border-radius:7px;border:1px solid var(--line)}
.thumbs figcaption{font-size:10px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 渲染状态 */
.rstat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;
  box-shadow:0 1px 3px rgba(20,24,60,.04)}
.rstat.done{border-color:#bfe7d3;background:#f4fbf7}
.rstat.error{border-color:#f3c9c4;background:#fdf3f2}
.prog{height:10px;background:#e9ebf3;border-radius:6px;overflow:hidden}
.prog .bar{height:100%;background:var(--grad);transition:width .4s}
.rstat video{width:100%;max-height:440px;border-radius:9px;margin-bottom:10px;background:#000}
.done-row{display:flex;justify-content:space-between;align-items:center;font-weight:600}
.btn-link{border:1px solid var(--line);padding:7px 13px;border-radius:9px;background:#fff}
.trace{margin-top:10px;background:#f3f4fa;padding:10px;border-radius:8px;font-size:11px;
  color:var(--muted);overflow:auto;max-height:200px}

/* ============================================================
   落地页 —— 作用域 body.landing(浅色,与编辑器同一套配色)
   ============================================================ */
body.landing{
  --ink:#101327; --ink2:#3a4060; --mut:#6b7191; --line2:#e9ebf3;
  --brand:#5b6cff; --brand2:#9b5cff; --cyan:#16c2e6;
  background:#fff; color:var(--ink);
}
body.landing .wrap{max-width:1120px;margin:0 auto;padding:0 24px}
body.landing .wrap.narrow{max-width:760px}
body.landing h2{font-size:30px;margin:0 0 6px;letter-spacing:-.02em}
body.landing .sub{color:var(--mut);margin:0 0 30px;font-size:15px}
body.landing .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* 导航 */
.lnav{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.78);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line2)}
.lnav-in{max-width:1120px;margin:0 auto;padding:13px 24px;display:flex;align-items:center;gap:24px}
.lbrand{font-weight:800;color:var(--ink);font-size:16px;letter-spacing:-.01em}
.lbrand .dot{margin-right:4px}
.lnav-links{display:flex;gap:24px;margin-left:8px}
.lnav-links a{color:var(--ink2);font-size:14px;font-weight:500}
.lnav-links a:hover{color:var(--brand)}
.lnav-cta{margin-left:auto;display:flex;gap:10px}
.lnav-cta .who{font-size:13px;color:var(--ink2);font-weight:600;align-self:center;margin-right:2px}
.lnav-cta form{margin:0}
@media(max-width:680px){.lnav-links{display:none}}

/* 按钮 */
.btn-grad{background:var(--grad);color:#fff;border:none;border-radius:10px;
  padding:9px 18px;font-weight:700;font-size:14px;cursor:pointer;text-decoration:none;
  display:inline-block;box-shadow:0 6px 18px rgba(91,108,255,.28)}
.btn-grad:hover{filter:brightness(1.05);transform:translateY(-1px)}
.btn-grad.lg{padding:14px 28px;font-size:16px;border-radius:12px}
.btn-grad.full{width:100%;padding:12px}
.btn-ghost-l{background:#fff;color:var(--ink);border:1px solid var(--line2);border-radius:10px;
  padding:9px 18px;font-weight:600;font-size:14px;cursor:pointer;text-decoration:none;display:inline-block}
.btn-ghost-l:hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost-l.lg{padding:14px 26px;font-size:16px;border-radius:12px}
.btn-ghost-l.full{width:100%;padding:12px}

/* HERO */
.hero{position:relative;overflow:hidden;text-align:center;padding:90px 0 80px}
.hero-bg{position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(60% 50% at 50% 0%, rgba(91,108,255,.16), transparent 70%),
    radial-gradient(40% 40% at 85% 20%, rgba(22,194,230,.14), transparent 70%),
    radial-gradient(40% 40% at 15% 30%, rgba(155,92,255,.14), transparent 70%)}
.hero-in{position:relative;z-index:1}
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.04em;
  color:var(--brand);background:rgba(91,108,255,.10);border:1px solid rgba(91,108,255,.18);
  padding:5px 14px;border-radius:30px;margin-bottom:20px}
.hero h1{font-size:54px;line-height:1.08;letter-spacing:-.03em;margin:0 0 18px;font-weight:800}
.hero .lead{color:var(--ink2);font-size:18px;line-height:1.7;margin:0 auto 30px;max-width:620px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.trust{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.trust .chip{font-size:12.5px;color:var(--mut);background:#fff;border:1px solid var(--line2);
  padding:6px 13px;border-radius:30px}
.trust .chip.ok{color:#15a06a;border-color:#cdeede;background:#f1fbf6}
@media(max-width:680px){.hero h1{font-size:38px}.hero{padding:60px 0 50px}}

/* 区块 */
.sec{padding:72px 0}
.sec.alt{background:#f7f8fc;border-top:1px solid var(--line2);border-bottom:1px solid var(--line2)}

/* 场景卡 */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.cards{grid-template-columns:1fr}}
.scard{position:relative;background:#fff;border:1px solid var(--line2);border-radius:18px;
  padding:24px 20px;transition:.18s}
.scard:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(20,24,60,.10);border-color:#dfe3f3}
.scard.live{border-color:rgba(91,108,255,.35);box-shadow:0 12px 34px rgba(91,108,255,.12)}
.scard .ico{font-size:30px;margin-bottom:14px}
.scard h3{margin:0 0 8px;font-size:17px}
.scard p{margin:0;color:var(--mut);font-size:13.5px;line-height:1.65}
.badge{position:absolute;top:16px;right:16px;font-size:11px;font-weight:700;color:var(--mut);
  background:#f1f2f8;border-radius:20px;padding:3px 10px}
.badge.live{color:#fff;background:var(--grad)}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:760px){.steps{grid-template-columns:1fr}}
.step{background:#fff;border:1px solid var(--line2);border-radius:16px;padding:26px 22px;position:relative}
.step .n{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:11px;
  background:var(--grad);color:#fff;font-weight:800;margin-bottom:14px}
.step h3{margin:0 0 6px;font-size:17px}
.step p{margin:0;color:var(--mut);font-size:14px;line-height:1.65}

/* 能力 */
.feats{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:760px){.feats{grid-template-columns:1fr}}
.feat{display:flex;gap:16px;background:#fff;border:1px solid var(--line2);border-radius:16px;padding:22px}
.feat .ico{font-size:26px;flex:0 0 auto}
.feat h3{margin:0 0 5px;font-size:16px}
.feat p{margin:0;color:var(--mut);font-size:13.5px;line-height:1.6}

/* 创作区(功能) */
body.landing .newproj{display:flex;gap:12px;max-width:620px;margin:0 0 30px}
body.landing .newproj input{flex:1;background:#fff;border:1px solid var(--line2);color:var(--ink);
  border-radius:11px;padding:13px 16px;font-size:15px}
body.landing .newproj input:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px rgba(91,108,255,.12)}
body.landing .projects{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
body.landing .empty{color:var(--mut);padding:30px 0}
.pcard{display:flex;align-items:center;justify-content:space-between;background:#fff;
  border:1px solid var(--line2);border-radius:14px;overflow:hidden;transition:.16s}
.pcard:hover{border-color:#dfe3f3;box-shadow:0 10px 26px rgba(20,24,60,.08)}
.pcard-main{flex:1;padding:18px;display:block;color:var(--ink)}
.pcard-main h3{margin:0 0 4px;font-size:16px}
.pcard-main .meta{margin:0;color:var(--mut);font-size:12.5px}
.pcard .del{background:transparent;border:none;color:#c2c6d8;font-size:15px;cursor:pointer;padding:0 16px;box-shadow:none}
.pcard .del:hover{color:var(--danger)}

/* FAQ */
body.landing details{background:#fff;border:1px solid var(--line2);border-radius:12px;
  padding:16px 18px;margin-bottom:10px}
body.landing summary{cursor:pointer;font-weight:600;font-size:15px;list-style:none}
body.landing summary::-webkit-details-marker{display:none}
body.landing details[open] summary{color:var(--brand)}
body.landing details p{margin:10px 0 0;color:var(--mut);font-size:14px;line-height:1.65}

/* 页脚 */
.lfoot{border-top:1px solid var(--line2);background:#fff;padding:28px 0}
.lfoot-in{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:600}
.lfoot .muted{color:var(--mut);font-weight:400}

/* 登录弹窗 */
.modal{position:fixed;inset:0;z-index:50;display:none;place-items:center;
  background:rgba(16,19,39,.5);backdrop-filter:blur(4px);padding:20px}
.modal.open{display:grid}
.modal-card{position:relative;background:#fff;border-radius:18px;width:100%;max-width:400px;
  padding:30px 28px;box-shadow:0 30px 80px rgba(16,19,39,.35)}
.modal-x{position:absolute;top:16px;right:16px;background:transparent;border:none;
  font-size:16px;color:#aab;cursor:pointer;box-shadow:none}
.tabs{display:flex;gap:6px;background:#f3f4fa;border-radius:11px;padding:4px;margin-bottom:20px}
.tab{flex:1;background:transparent;border:none;border-radius:8px;padding:9px;font-weight:600;
  font-size:14px;color:var(--mut);cursor:pointer;box-shadow:none}
.tab.on{background:#fff;color:var(--ink);box-shadow:0 2px 8px rgba(20,24,60,.08)}
.modal-card h3{margin:0 0 18px;font-size:20px}
.modal-card label{display:block;font-size:13px;color:var(--ink2);margin-bottom:14px;font-weight:500}
.modal-card input{width:100%;margin-top:6px;background:#fff;border:1px solid var(--line2);
  border-radius:10px;padding:11px 13px;font-size:14px;color:var(--ink)}
.modal-card input:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px rgba(91,108,255,.12)}
.auth-err{background:#fdecec;border:1px solid #f6c9c4;color:#c0392b;font-size:13px;
  padding:9px 12px;border-radius:9px;margin:0 0 14px}
.modal-note{text-align:center;color:#aab;font-size:11.5px;margin:16px 0 0}
.ai-actions{display:flex;gap:8px;margin-bottom:6px}
.ai-actions button{flex:1}

.lockhint{color:#b07d2b;font-weight:600}
.spinner{display:inline-block;width:13px;height:13px;border:2px solid #d9ddf0;
  border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;
  vertical-align:-2px;margin-right:7px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ 对话式 Agent 界面 ============ */
.editor-head .tag{margin-left:4px}
.chatlayout{display:grid;grid-template-columns:1fr 380px;gap:18px;align-items:start}
@media(max-width:880px){.chatlayout{grid-template-columns:1fr}}

.msgs{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;height:62vh;overflow-y:auto;display:flex;flex-direction:column;gap:12px;
  box-shadow:0 1px 3px rgba(20,24,60,.04)}
.empty-chat{margin:auto;text-align:center;color:var(--muted);max-width:460px}
.empty-chat p{margin:6px 0}
.msg{display:flex}
.msg.user{justify-content:flex-end}
.msg .bubble{max-width:80%;padding:11px 15px;border-radius:14px;line-height:1.6;white-space:pre-wrap;word-break:break-word}
.msg.user .bubble{background:var(--grad);color:#fff;border-bottom-right-radius:5px}
.msg.ai .bubble{background:#fff;border:1px solid var(--line);color:var(--text);border-bottom-left-radius:5px}
.bubble.running{display:flex;flex-direction:column;gap:7px;color:var(--text);min-width:250px}
.genline{display:flex;align-items:center;gap:8px;font-weight:500}
.genmeta{color:var(--muted);font-weight:400;font-size:13px}
.genbar{height:5px;background:#eceaf6;border-radius:4px;overflow:hidden}
.genbar-fill{height:100%;background:var(--grad);border-radius:4px;transition:width .5s ease}
.genhint{color:var(--muted);font-size:12px}
.msg.tool{align-items:center;gap:8px;font-size:12px;color:var(--muted);padding-left:4px;flex-wrap:wrap}
.msg.tool .ti{font-weight:600;color:var(--ink2);flex:0 0 auto}
.msg.tool code{background:#eef0f7;border-radius:6px;padding:2px 7px;font-size:11.5px;color:#3a4060;
  max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.msg.tool .tres{color:#15a06a;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}

.output{position:sticky;top:74px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);padding:14px;box-shadow:0 1px 3px rgba(20,24,60,.04)}
.output video{width:100%;border-radius:9px;background:#000;margin-bottom:8px}
.out-row{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:600}
.noout{height:160px;display:flex;align-items:center;justify-content:center;gap:8px;color:var(--muted);
  border:1px dashed var(--line);border-radius:10px;background:#fafbff}
.wsfiles{margin-top:12px;border-top:1px solid var(--line);padding-top:10px}
.wsf-title{font-size:11px;color:var(--muted);margin-bottom:6px}
.wsfiles a{display:inline-block;font-size:12px;background:#eef0f7;border-radius:6px;padding:3px 9px;margin:0 6px 6px 0;color:#3a4060}
.wsfiles a:hover{color:var(--brand)}

.chatbar{display:flex;gap:10px;margin-top:14px;align-items:flex-end}
.chatbar textarea{flex:1;resize:none;border:1px solid var(--line);border-radius:12px;padding:12px 14px;
  font-size:15px;background:#fff;line-height:1.5}
.chatbar textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(91,108,255,.12);outline:none}
.chatbar button{flex:0 0 auto;align-self:stretch;padding:0 22px}

/* 上传素材 / info 消息 */
.upbtn{flex:0 0 auto;align-self:stretch;display:flex;align-items:center;justify-content:center;
  width:46px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;font-size:18px;color:var(--ink2)}
.upbtn:hover{border-color:var(--accent);color:var(--accent)}
.msg.info{justify-content:center;color:var(--muted);font-size:12.5px;background:#f1f3ff;
  border:1px solid #e2e6fb;border-radius:20px;padding:5px 14px;align-self:center;max-width:90%}
.upmat .upthumbs{display:flex;flex-wrap:wrap;gap:7px}
.upthumb{width:64px;height:44px;object-fit:cover;border-radius:7px;border:1px solid var(--line)}
.upfile{display:inline-block;font-size:12px;background:#eef0f7;border-radius:6px;padding:4px 9px;color:#3a4060}