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16px;--sbw-collapsed:70px;--sbw-expanded:240px;--topbar-h:70px;--chat-max:740px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--ease-spring:cubic-bezier(0.32,0.72,0,1);--ease-std:cubic-bezier(0.4,0,0.2,1);--dur-fast:120ms;--dur-base:200ms;--dur-slow:320ms}[data-surface=onramp]{--onramp-cta-h:52px;--onramp-cta-radius:var(--radius-pill);--onramp-modal-w:420px;--onramp-modal-radius:var(--radius-xl);--onramp-backdrop:rgba(0,0,0,0.55);--onramp-backdrop-blur:8px;--onramp-field-h:48px;--imsg-incoming-bg:#2c2c2e;--imsg-incoming-text:#ffffff;--imsg-outgoing-bg:#0a84ff;--imsg-outgoing-text:#ffffff;--imsg-meta:rgba(235,235,245,0.60);--imsg-radius:18px}[data-surface=portal]{--portal-nav-w:220px;--portal-body-pad:32px 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var(--text-tertiary);outline-offset:2px}.hl-btn:disabled{background:var(--text-quaternary);color:var(--text-on-accent);cursor:not-allowed}.hl-btn--ghost:disabled{background:transparent;color:var(--text-quaternary);border-color:var(--border)}.hl-btn.is-loading .hl-btn__label{opacity:.4}.hl-btn__icon{display:inline-flex}.hl-btn__spinner{position:absolute;width:16px;height:16px;border-radius:999px;border:2px solid color-mix(in srgb,var(--text-on-accent) 35%,transparent);border-top-color:var(--text-on-accent);animation:hl-spin .7s linear infinite}@keyframes hl-spin{to{transform:rotate(1turn)}}.hl-tap:active{transform:scale(.98)}.hl-field{display:flex;flex-direction:column;gap:var(--space-2);width:100%}.hl-field__label{font-size:11px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--text-tertiary)}.hl-field__control{display:flex;align-items:center;gap:var(--space-2);height:var(--onramp-field-h,48px);padding:0 var(--space-3);background:var(--bg-input);border:1px solid 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var(--space-4);border-top:1px solid var(--border);color:var(--text-quaternary);font-size:14px}.hl-app{display:flex;height:100vh;background:var(--bg);color:var(--text);overflow:hidden}.hl-app__main{flex:1 1;min-width:0;display:flex;flex-direction:column}.hl-app__body{flex:1 1;min-height:0;overflow:auto}.hl-sidebar{flex:0 0 var(--sbw-collapsed);width:var(--sbw-collapsed);background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;transition:width var(--dur-base) var(--ease-spring),flex-basis var(--dur-base) var(--ease-spring);overflow:hidden}.hl-sidebar.is-expanded,.hl-sidebar:hover{flex-basis:var(--sbw-expanded);width:var(--sbw-expanded)}.hl-sidebar__logo{display:flex;align-items:center;gap:var(--space-2);height:var(--topbar-h);padding:0 0 0 18px}.hl-sidebar__wordmark{font-family:var(--serif);font-size:18px;white-space:nowrap;opacity:0;transition:opacity var(--dur-base) var(--ease-std) 60ms}.hl-sidebar.is-expanded 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32px;width:32px;height:32px;border-radius:var(--radius-md);background:var(--accent);color:var(--text-on-accent);display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:600}.hl-sidebar__team-name{font-size:13px;white-space:nowrap;opacity:0;transition:opacity var(--dur-base) var(--ease-std)}.hl-sidebar.is-expanded .hl-sidebar__team-name,.hl-sidebar:hover .hl-sidebar__team-name{opacity:1}.hl-topbar{height:var(--topbar-h);display:flex;align-items:flex-end;justify-content:space-between;padding:0 var(--space-5) 12px;background:linear-gradient(to bottom,var(--bg),transparent)}.hl-topbar__title{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);color:var(--text);font-size:14px}.hl-topbar__title:hover{background:var(--bg-hover)}.hl-topbar__title svg{color:var(--text-tertiary)}.hl-topbar__actions{display:flex;align-items:center;gap:var(--space-2)}.hl-iconbtn{width:32px;height:32px;border-radius:var(--radius-md);display:inline-flex;align-items:center;justify-content:center;color:var(--text-tertiary)}.hl-iconbtn:hover{background:var(--bg-hover);color:var(--text)}.hl-hero{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-6);padding:var(--space-6)}.hl-hero__title{font-family:var(--serif);font-size:var(--chat-hero-size,32px);font-weight:400;letter-spacing:-.01em;text-align:center;min-height:44px}.hl-composer{width:100%;max-width:var(--chat-max,740px);margin:0 auto;background:var(--bg-input);border:1px solid var(--border-input);border-radius:var(--composer-radius,0);box-shadow:var(--shadow-sm)}.hl-composer__input-wrap{position:relative;display:flex;align-items:flex-start}.hl-composer__chevron{position:absolute;left:10px;top:16px;color:var(--text-quaternary);font-size:15px;line-height:1}.hl-composer__textarea{width:100%;resize:none;background:transparent;border:none;outline:none;color:var(--text);font-size:15px;line-height:1.4;padding:14px 8px 14px 26px;min-height:var(--composer-min-h,52px);max-height:200px}.hl-composer__textarea::placeholder{color:var(--text-quaternary)}.hl-composer__row{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3)}.hl-composer__campaign{display:inline-flex;align-items:center;gap:var(--space-1);font-size:13px;color:var(--text-tertiary);padding:var(--space-1) var(--space-2);border-radius:var(--radius-md)}.hl-composer__campaign:hover{background:var(--bg-hover);color:var(--text)}.hl-composer__spacer{flex:1 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0 var(--space-6);border-top:1px solid var(--border);background:var(--bg)}