:root{
  --navy:#061226;--navy2:#091b34;--ink:#0b1730;--muted:#71809a;--line:#dce5f1;--bg:#f5f8fc;--card:#fff;
  --blue:#087cf0;--cyan:#00d4ff;--violet:#7b4cff;--magenta:#d31dff;--green:#16b47a;--orange:#ff9d3d;--red:#e35562;
  --grad:linear-gradient(100deg,#0aa7ff 0%,#3169ff 45%,#8a45ff 72%,#d51cff 100%);
  --shadow:0 14px 40px rgba(13,35,75,.10);--radius:20px;--sidebar:236px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"SF Pro Display","Segoe UI","Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff}button,input,textarea,select{font:inherit}button,a{transition:.2s ease}button{cursor:pointer}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}[hidden]{display:none!important}.public-container{width:min(1420px,calc(100% - 56px));margin:0 auto}.btn{border:0;border-radius:13px;min-height:44px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:12px;font-weight:700;color:var(--ink);background:#fff}.btn:hover{transform:translateY(-1px)}.btn.gradient{color:#fff;background:var(--grad);box-shadow:0 10px 26px rgba(78,78,255,.22)}.btn.outline,.btn.ghost{background:transparent;border:1px solid currentColor}.btn.ghost{border-color:rgba(255,255,255,.18);color:#fff}.btn.small{min-height:40px;padding:0 15px;border-radius:12px;font-size:14px}.btn.large{min-height:58px;padding:0 25px;border-radius:16px}.btn.full{width:100%}.btn.danger{color:#b72939;border:1px solid #f1c9ce;background:#fff7f8}.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.24em;font-weight:800;text-transform:uppercase}.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 16px var(--cyan)}
/* Brivon-inspired public site */
.public-site{background:#050b14;color:#fff;min-height:100vh}.public-header{position:fixed;top:0;left:0;right:0;z-index:30;background:rgba(4,10,19,.78);backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.08)}.nav-shell{height:88px;display:flex;align-items:center;gap:34px}.brand-lockup{display:flex;align-items:center;gap:11px;min-width:170px}.brand-lockup img{width:48px;height:42px;object-fit:contain}.brand-lockup span{display:flex;flex-direction:column;line-height:1}.brand-lockup strong{letter-spacing:.24em;font-size:20px}.brand-lockup small{font-size:9px;letter-spacing:.34em;margin-top:8px;color:#9fb0c9}.public-nav{display:flex;gap:30px;align-items:center;margin-left:auto}.public-nav a{font-size:14px;color:#b7c3d3}.public-nav a:hover{color:#fff}.public-actions{display:flex;align-items:center;gap:10px}.lang-menu{position:relative}.lang-toggle{height:40px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);color:#fff;border-radius:12px;padding:0 12px;min-width:112px}.lang-popover{position:absolute;top:48px;right:0;min-width:150px;padding:7px;background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);display:none;z-index:50}.lang-menu.open .lang-popover{display:block}.lang-popover button{display:block;width:100%;border:0;background:transparent;text-align:left;border-radius:9px;padding:9px 10px;color:#3d4b63}.lang-popover button:hover,.lang-popover button.active{background:#edf4ff;color:#1268ed}.mobile-menu-btn{display:none;border:0;background:transparent;color:#fff;font-size:22px}.mobile-public-nav{display:none}.public-hero{padding:150px 0 70px;overflow:hidden;background:radial-gradient(circle at 80% 16%,rgba(90,64,255,.16),transparent 26%),radial-gradient(circle at 55% 40%,rgba(0,168,255,.08),transparent 30%),#050b14}.hero-grid{min-height:660px;display:grid;grid-template-columns:.88fr 1.12fr;align-items:center;gap:34px}.hero-copy{padding:55px 0}.hero-copy .eyebrow{color:#95cfff}.hero-copy h1{font-size:clamp(52px,5.6vw,92px);line-height:.99;letter-spacing:-.045em;margin:28px 0 26px;font-weight:760}.hero-copy h1 em{font-style:normal;background:linear-gradient(90deg,#fff 0,#79d6ff 44%,#bd75ff 84%);-webkit-background-clip:text;background-clip:text;color:transparent}.hero-copy>p{max-width:680px;color:#aab7c8;font-size:18px;line-height:1.75}.hero-cta-row{display:flex;gap:14px;margin:38px 0 32px}.hero-cta-row .outline{color:#dce6f4;border-color:#30405a}.hero-note{font-size:11px;letter-spacing:.2em;color:#5f7694}.hero-media{height:620px;position:relative;overflow:hidden;border-radius:28px;background:#02070d;box-shadow:0 40px 90px rgba(0,0,0,.35)}.hero-media:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#050b14 0,rgba(5,11,20,.45) 30%,transparent 62%);z-index:4;pointer-events:none}.hero-guide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.10;filter:contrast(1.15) saturate(1.05)}#hero-particle-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:2}.media-frame{position:absolute;inset:20px;border:1px solid rgba(255,255,255,.08);z-index:5;pointer-events:none}.media-tag{position:absolute;z-index:6;font-size:10px;letter-spacing:.18em;color:#8fa3bd;background:rgba(4,10,18,.62);border:1px solid rgba(255,255,255,.08);padding:9px 12px}.media-tag.top{top:36px;right:36px}.media-tag.bottom{left:36px;bottom:34px}.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12)}.stat-strip article{padding:26px 18px;display:flex;gap:18px;border-right:1px solid rgba(255,255,255,.1)}.stat-strip article:last-child{border-right:0}.stat-strip strong{font-size:28px;color:#75ccff}.stat-strip div{display:flex;flex-direction:column;gap:6px}.stat-strip b{font-size:15px}.stat-strip span{font-size:12px;color:#7e8da1}.public-section{padding:115px 0}.light-section{background:#f7f9fc;color:var(--ink)}.section-head{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:start;margin-bottom:56px}.section-head .eyebrow{color:#2779e8}.section-head h2{max-width:900px;font-size:clamp(36px,4vw,62px);line-height:1.04;letter-spacing:-.04em;margin:22px 0 0}.section-mark{font-size:12px;color:#94a3ba;letter-spacing:.14em}.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.cap-grid article{padding:34px;min-height:300px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);position:relative}.cap-grid article>span{position:absolute;right:22px;top:20px;color:#9aa9bd;font-size:11px}.cap-icon{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,#e9f8ff,#efe7ff);color:#2d70f5;display:grid;place-items:center;font-size:27px;margin-bottom:60px}.cap-grid h3{font-size:23px;margin:0 0 10px}.cap-grid p{color:#75839a;line-height:1.7}.workflow-section{background:#071426;color:#fff}.section-head.dark .eyebrow{color:#83d7ff}.workflow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:42px}.workflow-grid article{min-height:190px;border:1px solid #223550;background:#0a1a30;padding:26px;border-radius:18px;display:flex;gap:18px}.workflow-grid .num{font-size:13px;color:#65cbff}.workflow-grid h3{font-size:20px;margin:2px 0 10px}.workflow-grid p{color:#8494aa;line-height:1.65;margin:0}.dual-visual{height:430px;border-radius:24px;overflow:hidden;position:relative;background:#000}.dual-visual img{width:100%;height:100%;object-fit:cover;opacity:.92}.dual-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,12,23,.3),transparent 50%,rgba(3,12,23,.3))}.dual-copy{position:absolute;z-index:2;bottom:24px;left:7%;right:7%;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;font-size:11px;letter-spacing:.18em;color:#a6dfff}.dual-copy i{height:1px;background:linear-gradient(90deg,#6ccaff,#604cff,#ffb566)}.pricing-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:1000px;margin:auto}.price-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:34px}.price-card.featured{border-color:#8a5bff;box-shadow:0 20px 50px rgba(87,83,255,.13)}.price-kicker{font-size:11px;letter-spacing:.16em;color:#73819a}.price-card h3{font-size:30px;margin:16px 0}.price-big{font-size:52px;font-weight:800;letter-spacing:-.04em}.price-card p{color:#6f7d93}.price-card ul{list-style:none;padding:18px 0;margin:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.price-card li{padding:8px 0;color:#41506a}.price-card li:before{content:"✓";color:#19a97b;margin-right:10px}.about-section{background:#09162a}.about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:center}.brand-large img{width:260px;margin:auto;filter:drop-shadow(0 22px 35px rgba(54,87,255,.16))}.about-grid h2{font-size:54px;margin:18px 0 10px}.about-grid>div:last-child>p{font-size:24px;color:#75d7ff}.about-note{font-size:16px!important;line-height:1.8!important;color:#8fa1ba!important;max-width:700px}.public-footer{border-top:1px solid rgba(255,255,255,.09);padding:35px 0;background:#040a13}.public-footer>.public-container{display:flex;align-items:center;justify-content:space-between;gap:20px}.public-footer p,.public-footer small{color:#78899f;font-size:12px}
/* Auth */
.modal-backdrop{position:fixed;inset:0;z-index:80;background:rgba(2,7,14,.72);backdrop-filter:blur(10px);display:grid;place-items:center;padding:20px}.auth-modal{width:min(460px,100%);background:#fff;color:var(--ink);border-radius:24px;padding:34px;box-shadow:0 30px 90px rgba(0,0,0,.35);position:relative}.modal-close{position:absolute;right:18px;top:16px;border:0;background:#eef3f9;width:34px;height:34px;border-radius:50%;font-size:22px;color:#64738a}.auth-logo{display:flex;align-items:center;gap:9px;margin-bottom:25px}.auth-logo img{width:34px}.auth-logo span{font-size:20px;font-weight:800;letter-spacing:.18em}.auth-kicker{font-size:10px;letter-spacing:.18em;color:#8190a7}.auth-modal h2{font-size:30px;margin:8px 0}.auth-modal>p{color:#8390a4;margin:0 0 24px}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;padding:4px;background:#071526;border-radius:13px;margin-bottom:15px}.auth-tabs button{height:42px;border:0;border-radius:10px;background:transparent;color:#8da0b8}.auth-tabs button.active{background:#15324d;color:#fff}.google-login-container{display:flex;justify-content:center;min-height:44px}.auth-or{display:flex;align-items:center;gap:12px;color:#9aa8ba;font-size:11px;margin:13px 0}.auth-or:before,.auth-or:after{content:"";height:1px;background:#dce4ee;flex:1}.field{display:flex;flex-direction:column;gap:7px;margin:12px 0}.field>span{font-size:12px;color:#586881;font-weight:700}.field input,.field textarea,.field select,.app-search input,.filter-search input{border:1px solid #d9e3ef;background:#fbfcfe;border-radius:12px;padding:12px 14px;outline:none;color:var(--ink)}.field input:focus,.field textarea:focus,.field select:focus,.app-search input:focus,.filter-search input:focus{border-color:#5b80ff;box-shadow:0 0 0 3px rgba(71,97,255,.08)}.auth-submit{margin-top:15px}.auth-switch{text-align:center;color:#7b899e;font-size:12px;margin-top:16px}.auth-switch button{border:0;background:none;color:#346fec;font-weight:700}.auth-message{padding:10px 12px;border-radius:10px;margin:8px 0;background:#ecfff7;color:#177b5a;font-size:12px}.auth-message.error{background:#fff0f2;color:#ad2b3e}
/* Intro */
.intro-overlay{position:fixed;inset:0;background:#020910;z-index:90;color:#fff;overflow:hidden}.intro-overlay:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#020910 0,#020910 30%,transparent 58%);pointer-events:none}.intro-guide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.08}#intro-particle-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:1}.intro-copy{position:absolute;z-index:4;left:7vw;top:50%;transform:translateY(-50%);max-width:520px}.intro-copy h1{font-size:58px;margin:20px 0 14px}.intro-copy p{font-size:18px;color:#b5c4d6}.intro-copy small{letter-spacing:.18em;color:#54708e}.intro-progress{height:2px;background:#17324f;width:330px;margin:40px 0 12px}.intro-progress i{display:block;height:100%;width:0;background:#8bddff;box-shadow:0 0 12px #55c8ff}.intro-skip{position:absolute;z-index:5;right:4vw;bottom:4vh;color:#a8bad0;border-color:#35506c}
/* Workspace / Dasher-inspired */
.workspace{min-height:100vh;background:var(--bg);color:var(--ink)}.sidebar{width:var(--sidebar);position:fixed;left:0;top:0;bottom:0;background:linear-gradient(180deg,#07152b,#091c38);color:#fff;z-index:50;display:flex;flex-direction:column;padding:24px 16px}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:0 8px 26px;border-bottom:1px solid rgba(255,255,255,.08)}.sidebar-brand img{width:43px}.sidebar-brand div{display:flex;flex-direction:column}.sidebar-brand strong{font-size:20px;letter-spacing:.18em}.sidebar-brand span{font-size:8px;letter-spacing:.3em;color:#7f94b1;margin-top:6px}.side-nav{display:flex;flex-direction:column;gap:7px;padding-top:24px}.side-nav button{height:48px;border:0;border-radius:12px;background:transparent;color:#9eb0c7;text-align:left;padding:0 13px;display:flex;align-items:center;gap:12px;font-weight:650}.side-nav button:hover{background:rgba(255,255,255,.05);color:#fff}.side-nav button.active{color:#fff;background:var(--grad);box-shadow:0 10px 22px rgba(76,57,255,.22)}.nav-icon{width:25px;height:25px;border:1px solid currentColor;border-radius:8px;display:grid;place-items:center;font-size:13px}.sidebar-bottom{margin-top:auto;padding-top:18px;border-top:1px solid rgba(255,255,255,.08)}.side-plan{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);padding:13px;border-radius:13px}.side-plan>span{font-size:11px;font-weight:800;color:#80d9ff}.side-plan small{color:#8295af}.mini-progress{height:4px;background:#203750;border-radius:99px;margin:9px 0}.mini-progress i{display:block;height:100%;width:0;background:var(--grad);border-radius:99px}.user-chip{width:100%;border:0;background:transparent;color:#fff;display:grid;grid-template-columns:38px 1fr auto;gap:10px;align-items:center;text-align:left;padding:14px 3px 2px}.user-chip span:nth-child(2){display:flex;flex-direction:column;min-width:0}.user-chip b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-chip small{color:#7890ac;margin-top:3px}.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:#fff;background:var(--grad);font-weight:800;overflow:hidden;background-size:cover;background-position:center}.avatar.big{width:58px;height:58px;font-size:20px}.workspace-shell{margin-left:var(--sidebar);min-height:100vh}.app-topbar{height:76px;position:sticky;top:0;z-index:25;background:rgba(255,255,255,.94);backdrop-filter:blur(15px);border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 28px;gap:24px}.app-search{height:44px;max-width:520px;flex:1;display:flex;align-items:center;gap:9px;background:#f8faff;border:1px solid var(--line);border-radius:12px;padding:0 12px}.app-search input{border:0!important;box-shadow:none!important;background:transparent;padding:0;min-width:0;flex:1}.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:10px}.system-chip{border:1px solid #d9e7e1;background:#f4fffa;border-radius:11px;height:38px;padding:0 12px;color:#268066;font-size:12px;font-weight:700}.system-chip i{display:inline-block;width:7px;height:7px;border-radius:50%;background:#20c78a;margin-right:7px}.app-lang .lang-toggle{color:#52617a;border-color:var(--line);background:#fff}.top-avatar{width:38px;height:38px;border:0;border-radius:50%;color:#fff;background:var(--grad);font-weight:800}.sidebar-toggle{display:none;border:0;background:transparent;font-size:22px}.app-main{padding:34px;max-width:1680px;margin:0 auto}.app-view{display:none}.app-view.active{display:block;animation:fadein .25s ease}@keyframes fadein{from{opacity:.4;transform:translateY(5px)}to{opacity:1;transform:none}}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:25px;margin-bottom:25px}.page-kicker{font-size:11px;letter-spacing:.16em;color:#8396af}.page-head h1{font-size:31px;margin:8px 0 5px;letter-spacing:-.025em}.page-head p{margin:0;color:#8290a5}.home-head{align-items:center}.quota-pill{background:#f2e9ff;color:#9950d6;padding:10px 18px;border-radius:99px;font-size:12px}.card{background:#fff;border:1px solid var(--line);border-radius:17px;box-shadow:0 1px 1px rgba(10,31,63,.02)}.home-composer{padding:18px}.composer-line{display:flex;align-items:center;gap:12px;border:1px solid #dbe5f2;border-radius:14px;padding:10px 10px 10px 14px}.composer-line textarea{flex:1;resize:none;border:0;outline:0;min-height:48px;padding:10px 0;color:var(--ink);font-size:16px}.composer-tools{display:flex;gap:10px;margin-top:10px}.composer-tools button{border:1px solid #dbe4ef;background:#fff;color:#66768d;border-radius:10px;height:34px;padding:0 13px}.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:18px 0}.mode-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:19px;display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;text-align:left;position:relative}.mode-card:hover,.mode-card.selected{border-color:#6f64ff;box-shadow:0 8px 25px rgba(86,73,255,.08)}.mode-card h3{margin:0 0 5px}.mode-card p{margin:0;color:#8390a4;font-size:12px}.mode-card>span{font-size:11px;color:#8594aa}.mode-card em{position:absolute;right:12px;top:10px;font-style:normal;font-size:10px;background:#f1e9ff;color:#9664d6;padding:4px 7px;border-radius:99px}.mode-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;color:#fff}.mode-icon.orange{background:linear-gradient(135deg,#ffb24e,#ff773d)}.mode-icon.blue{background:linear-gradient(135deg,#1dbdfc,#4361ff)}.mode-icon.purple{background:linear-gradient(135deg,#7250ff,#d522ff)}.dashboard-grid{display:grid;grid-template-columns:1fr 360px;gap:18px}.recent-card,.action-card{padding:20px}.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.card-head h2{font-size:18px;margin:0}.card-head button{border:0;background:transparent;color:#3974ed}.research-list{min-height:210px}.research-row{display:grid;grid-template-columns:1fr 130px 110px 110px;gap:12px;align-items:center;padding:15px 7px;border-bottom:1px solid #edf1f6;cursor:pointer}.research-row:hover{background:#fafcff}.research-row:last-child{border-bottom:0}.research-row .title{font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.research-row .sub{font-size:11px;color:#8a98ac;margin-top:4px}.badge{display:inline-flex;align-items:center;justify-content:center;padding:6px 10px;border-radius:99px;font-size:11px;background:#edf3ff;color:#4674bd}.badge.deep{background:#f3e9ff;color:#9a54d7}.badge.light{background:#fff1db;color:#b67616}.badge.done{background:#e6f8f0;color:#258267}.action-card{display:flex;flex-direction:column}.action-card .card-head{margin-bottom:8px}.action-card>button{display:grid;grid-template-columns:36px 1fr auto;gap:12px;align-items:center;text-align:left;border:1px solid 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