:root{--font-sans:-apple-system,BlinkMacSystemFont,"Inter","HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;--bg:#f6f8fb;--card:#fff;--text:#102033;--muted:#637083;--line:rgba(16,32,51,.08);--green:#16b88f;--blue:#4f7cff;--red:#ef4444;--orange:#f59e0b;--shadow:0 18px 56px rgba(21,34,50,.075)}
*{box-sizing:border-box}body{margin:0;font-family:var(--font-sans);color:var(--text);background:radial-gradient(circle at 8% 0%,rgba(80,124,255,.10),transparent 34%),radial-gradient(circle at 92% 4%,rgba(22,184,143,.11),transparent 30%),linear-gradient(180deg,#fbfdff 0%,var(--bg) 100%);min-height:100vh;padding-bottom:92px}.topbar{height:68px;display:flex;align-items:center;gap:18px;padding:0 max(28px,calc((100vw - 1180px)/2 + 28px));background:rgba(255,255,255,.88);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#172033;font-weight:900}.mark{width:38px;height:38px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--green));display:grid;place-items:center;color:white;box-shadow:0 10px 22px rgba(79,124,255,.22)}.brand small{display:block;color:var(--muted);font-size:12px;font-weight:800;margin-top:2px}.topbar nav{display:flex;gap:18px;margin-left:28px;color:var(--muted);font-size:14px;font-weight:800}.topbar nav a{color:inherit;text-decoration:none}.topbar nav a.active{color:var(--blue)}.top-actions{margin-left:auto;display:flex;align-items:center;gap:10px}.btn{border:0;border-radius:14px;padding:11px 16px;font-weight:900;cursor:pointer;font-size:14px;background:#fff;color:#223044;border:1px solid var(--line);font-family:inherit;transition:.18s;white-space:nowrap}.btn:hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,23,42,.08)}.btn.primary{background:linear-gradient(135deg,var(--blue),var(--green));color:white;border:0;box-shadow:0 12px 26px rgba(79,124,255,.20)}.page{max-width:1440px;margin:0 auto;padding:18px 28px 34px}.tool-intro{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:18px 24px;margin-bottom:20px}.tool-intro h1{font-size:34px;line-height:1.1;margin:0;letter-spacing:-.04em}.tool-grid{display:grid;grid-template-columns:400px minmax(0,1fr);gap:22px;align-items:stretch}.panel{background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow);overflow:hidden;min-width:0;display:flex;flex-direction:column}.panel-head{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;min-height:76px;background:linear-gradient(180deg,#fff,#fbfdff)}.panel-title b{font-size:18px;letter-spacing:-.01em}.panel-body{padding:20px;flex:1}.section-label{font-size:13px;font-weight:900;color:#21334d;margin:18px 0 8px;display:flex;gap:8px;align-items:center}.section-label:first-child{margin-top:0}.field-help{position:relative;display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:#64748b;font-size:12px;font-weight:900;cursor:help}.field-help .tip{position:absolute;left:24px;top:50%;transform:translateY(-50%);min-width:280px;max-width:360px;padding:10px 12px;border-radius:12px;background:#102033;color:#fff;font-size:12px;line-height:1.6;font-weight:700;box-shadow:0 16px 36px rgba(16,32,51,.22);opacity:0;pointer-events:none;transition:.16s;z-index:4}.field-help:hover .tip{opacity:1}.field-help .tip::before{content:"";position:absolute;left:-6px;top:50%;transform:translateY(-50%) rotate(45deg);width:12px;height:12px;background:#102033}textarea{width:100%;min-height:220px;border:1.5px solid var(--line);border-radius:18px;padding:15px;font:15px/1.65 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;resize:vertical;background:#fbfdff;color:#102033;outline:none}textarea:focus{border-color:rgba(79,124,255,.42);box-shadow:0 0 0 4px rgba(79,124,255,.08)}select,input{width:100%;border:1.5px solid var(--line);border-radius:14px;padding:12px;background:#fff;font:14px inherit;color:#223044;outline:none}.stack-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.stat{background:#f8fafc;border:1px solid var(--line);border-radius:16px;padding:12px;margin-top:12px}.stat strong{display:block;font-size:20px}.stat span{font-size:12px;color:var(--muted);font-weight:800;line-height:1.7}.right-panel .panel-body{padding:0;display:flex;flex-direction:column}.activity-stage{padding:24px;background:linear-gradient(180deg,#f8fbff,#f4f8ff);flex:1;display:flex}.projection-card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:0 16px 50px rgba(29,48,73,.09);padding:24px;flex:1;min-height:570px;position:relative;display:flex;flex-direction:column}.projection-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:18px;gap:12px}.projection-top h2{margin:0;font-size:24px;letter-spacing:-.03em}.status-badge{font-weight:900;color:#526176;background:#f8fafc;border:1px solid var(--line);padding:9px 14px;border-radius:999px}.empty{display:grid;place-items:center;text-align:center;min-height:420px;color:var(--muted);line-height:1.7;flex:1}.bottom-controls{position:fixed;left:0;right:0;bottom:0;padding:14px 28px;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-top:1px solid var(--line);display:flex;justify-content:center;z-index:40}.bottom-inner{max-width:1440px;width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;color:var(--muted);font-weight:800}.bottom-actions{display:flex;gap:10px;flex-wrap:wrap}.toast{position:fixed;left:50%;bottom:94px;transform:translateX(-50%);padding:14px 22px;border-radius:999px;background:#102033;color:#fff;font-weight:900;display:none;z-index:100;text-align:center;min-width:120px;box-shadow:0 18px 40px rgba(16,32,51,.22)}@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}50%{transform:translateX(5px)}75%{transform:translateX(-3px)}}@media(max-width:980px){.tool-grid{grid-template-columns:1fr}.topbar nav{display:none}.bottom-inner{align-items:flex-start;flex-direction:column}.bottom-actions{width:100%}.bottom-actions .btn{flex:1}.top-actions .btn:not(.primary){display:none}}
/* Projector full-screen defaults */
.projection-card:fullscreen{border:0;border-radius:0;box-shadow:none;min-height:100vh;width:100vw;padding:clamp(34px,5vw,72px);display:flex;align-items:center;justify-content:center;background:#fff}
.projection-card:fullscreen .projection-top{position:absolute;top:clamp(24px,4vw,48px);left:clamp(28px,5vw,72px);right:clamp(28px,5vw,72px);margin:0}
.projection-card:fullscreen .empty{min-height:70vh;width:min(980px,88vw);max-width:980px;margin:auto}

/* batch5 projector polish */
.projection-card:fullscreen .projection-top h2{font-size:clamp(26px,2.4vw,44px)}
.projection-card:fullscreen .status-badge{font-size:clamp(16px,1.2vw,22px);padding:12px 18px}
.projection-card:fullscreen .btn{font-size:clamp(16px,1vw,20px);padding:14px 20px}

/* Smart generation tabs + modal */
.mode-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;background:#f1f5f9;padding:6px;border-radius:16px;margin-bottom:18px}.mode-tabs button{border:0;border-radius:12px;background:transparent;padding:10px;font-weight:900;color:#64748b;cursor:pointer;font-family:inherit}.mode-tabs button.active{background:#fff;color:var(--blue);box-shadow:0 8px 20px rgba(15,23,42,.06)}.mode-tabs button:hover{background:#fff;color:var(--blue)}
.smart-gen-modal{position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;background:rgba(15,23,42,.58);backdrop-filter:blur(8px);padding:22px}.smart-gen-modal.on{display:flex}.smart-gen-card{position:relative;width:min(620px,94vw);background:#fff;border-radius:28px;padding:28px;box-shadow:0 28px 80px rgba(15,23,42,.28);border:1px solid rgba(255,255,255,.5)}.smart-gen-close{position:absolute;right:18px;top:16px;width:36px;height:36px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:24px;font-weight:900;cursor:pointer;color:#64748b}.smart-gen-card h3{font-size:26px;margin:0 0 8px;letter-spacing:-.04em}.smart-gen-hint{color:#64748b;font-weight:800;line-height:1.6;margin:0 0 16px}.smart-gen-card label{display:block;font-size:13px;font-weight:900;color:#21334d;margin:12px 0 8px}.smart-gen-topic{min-height:130px;width:100%;border:1.5px solid var(--line);border-radius:18px;padding:15px;font:15px/1.65 inherit;background:#fbfdff}.smart-gen-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.smart-gen-submit{width:100%;margin-top:18px;padding:14px 16px}.smart-gen-status{min-height:24px;margin-top:12px;color:#64748b;font-size:13px;font-weight:800;text-align:center;line-height:1.6}
@media(max-width:720px){.smart-gen-grid{grid-template-columns:1fr}.mode-tabs{grid-template-columns:1fr}}


/* v10 typography breathing room */
body{letter-spacing:.004em;line-height:1.58}
h1,h2,h3,.tool-intro h1,.panel-title b,.brand{letter-spacing:-.018em}
.tool-intro h1{line-height:1.16}
.topbar{padding-left:max(32px,calc((100vw - 1440px)/2 + 32px));padding-right:max(32px,calc((100vw - 1440px)/2 + 32px))}
.topbar nav{gap:22px}


/* v11 nav cleanup */
.topbar{gap:24px}
.topbar nav{gap:24px;white-space:nowrap}
.top-actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex-shrink:0}
.top-actions #authContainer{display:flex;align-items:center;min-width:68px}