:root{--radius-xl:34px;--radius-lg:26px;--radius-md:18px;--radius-sm:14px;--shadow:0 28px 80px #0206172e;--shadow-soft:0 16px 36px #0206171f;--space-page-x:18px;--space-page-y:22px}:root[data-theme=dark]{--bg:#07101d;--bg-soft:#0c1626;--bg-elevated:#0b1424d1;--card:#0a1220c7;--card-border:#ffffff17;--text:#edf3ff;--muted:#9ab0d2;--muted-strong:#c2d1ea;--input:#07101dd1;--surface:#ffffff0a;--surface-strong:#ffffff12;--paper:linear-gradient(180deg, #fcfcfb 0%, #f7f4ef 100%);--paper-text:#6b7280}:root[data-theme=light]{--bg:#f6efe7;--bg-soft:#fff9f3;--bg-elevated:#ffffffd6;--card:#ffffffc7;--card-border:#0f172a14;--text:#152236;--muted:#5f6f88;--muted-strong:#46556e;--input:#fffffff0;--surface:#0f172a09;--surface-strong:#0f172a11;--paper:linear-gradient(180deg, #fff 0%, #fbf7f1 100%);--paper-text:#667085;--shadow:0 28px 80px #0f172a17;--shadow-soft:0 16px 36px #0f172a14}:root[data-palette=violet-lux]{--primary:#8b5cf6;--primary-2:#22c55e;--primary-3:#06b6d4}:root[data-palette=emerald-ink]{--primary:#10b981;--primary-2:#14b8a6;--primary-3:#84cc16}:root[data-palette=rose-paper]{--primary:#f43f5e;--primary-2:#fb7185;--primary-3:#f59e0b}:root[data-palette=midnight-gold]{--primary:#d4a017;--primary-2:#f6c453;--primary-3:#8b5cf6}*{box-sizing:border-box}html{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;-webkit-text-size-adjust:100%}@media (prefers-color-scheme:dark){html{--lightningcss-light: ;--lightningcss-dark:initial}}body{min-height:100vh;color:var(--text);background:radial-gradient(circle at top left, color-mix(in srgb, var(--primary) 18%, transparent), transparent 26%), radial-gradient(circle at 86% 10%, color-mix(in srgb, var(--primary-3) 14%, transparent), transparent 24%), radial-gradient(circle at bottom right, color-mix(in srgb, var(--primary-2) 10%, transparent), transparent 26%), linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);overscroll-behavior-y:none;margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;transition:background .22s,color .22s;overflow:hidden auto}a{color:color-mix(in srgb, var(--primary-3) 76%, #5fbfff);text-decoration:none}button,input,select,textarea{font:inherit}button{-webkit-tap-highlight-color:transparent}img{max-width:100%;display:block}.page-shell{max-width:1380px;padding:var(--space-page-y) var(--space-page-x) 120px;margin:0 auto}.vision-shell{position:relative}.hero-card,.card,.stepper-card{border:1px solid var(--card-border);background:var(--card);-webkit-backdrop-filter:blur(18px);box-shadow:var(--shadow)}.hero-card{border-radius:var(--radius-xl);margin-bottom:18px;padding:28px;position:relative;overflow:hidden}.hero-card-vision{align-items:center;min-height:260px;display:flex}.hero-copy-wrap{z-index:2;width:100%;max-width:980px;position:relative}.hero-badge-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.hero-badge,.hero-mini-chip,.pill-soft{border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;width:fit-content;min-height:34px;padding:8px 12px;font-size:.8rem;display:inline-flex}.hero-badge{color:color-mix(in srgb, var(--primary) 70%, var(--text));background:color-mix(in srgb, var(--primary) 14%, transparent);border-color:color-mix(in srgb, var(--primary) 24%, transparent)}.hero-mini-chip,.pill-soft{color:var(--muted-strong);background:#ffffff0f;border-color:#ffffff14}.hero-title{letter-spacing:-.055em;max-width:900px;margin:16px 0 12px;font-size:clamp(2.2rem,6vw,4.8rem);line-height:.96}.hero-copy{max-width:760px;color:var(--muted);margin:0;font-size:1.02rem;line-height:1.68}.hero-feature-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:22px;display:grid}.hero-feature-card{background:#ffffff0b;border:1px solid #ffffff14;border-radius:22px;gap:4px;padding:14px;display:grid}.hero-feature-card span{color:color-mix(in srgb, var(--primary) 75%, var(--text));letter-spacing:.08em;text-transform:uppercase;font-size:.78rem}.hero-feature-card strong{font-size:.98rem}.hero-feature-card small{color:var(--muted);font-size:.83rem}.hero-toolbar{margin-top:22px}.hero-toolbar-vision{grid-template-columns:minmax(0,1.25fr) minmax(320px,.75fr);align-items:start;gap:16px;display:grid}.theme-controls,.hero-actions-inline,.hero-install-stack{gap:12px;display:grid}.theme-toggle{cursor:pointer;background:0 0;border:0;width:fit-content;padding:0}.theme-toggle-track{border:1px solid var(--card-border);background:#ffffff14;border-radius:999px;align-items:center;width:64px;height:36px;display:grid;position:relative;overflow:hidden}.theme-toggle-thumb{background:linear-gradient(135deg, var(--primary), var(--primary-3));border-radius:999px;width:30px;height:30px;position:absolute;top:3px;left:3px;box-shadow:0 8px 20px #00000040}.theme-toggle-labels{z-index:2;pointer-events:none;justify-content:space-between;padding:0 10px;font-size:14px;display:flex;position:relative}.palette-row{flex-wrap:wrap;gap:8px;display:flex}.palette-chip{border:1px solid var(--card-border);color:var(--text);cursor:pointer;background:#ffffff0b;border-radius:999px;align-items:center;gap:8px;min-height:40px;padding:9px 12px;transition:transform .16s,border-color .16s,background .16s;display:inline-flex}.palette-chip:hover{transform:translateY(-1px)}.palette-chip.is-active{border-color:color-mix(in srgb, var(--primary) 42%, transparent);background:color-mix(in srgb, var(--primary) 10%, transparent)}.palette-dot{border-radius:999px;width:12px;height:12px;display:inline-block}.palette-violet-lux{background:linear-gradient(135deg,#8b5cf6,#06b6d4)}.palette-emerald-ink{background:linear-gradient(135deg,#10b981,#84cc16)}.palette-rose-paper{background:linear-gradient(135deg,#f43f5e,#f59e0b)}.palette-midnight-gold{background:linear-gradient(135deg,#d4a017,#8b5cf6)}.hero-orb{filter:blur(24px);opacity:.74;pointer-events:none;border-radius:999px;position:absolute}.hero-orb-a{background:radial-gradient(circle, color-mix(in srgb, var(--primary) 45%, transparent), transparent 68%);width:240px;height:240px;animation:7s ease-in-out infinite floatOrb;top:-26px;right:-44px}.hero-orb-b{background:radial-gradient(circle, color-mix(in srgb, var(--primary-3) 34%, transparent), transparent 70%);width:180px;height:180px;animation:8.5s ease-in-out infinite floatOrb;bottom:-44px;right:140px}@keyframes floatOrb{0%,to{transform:translate(0,0)}50%{transform:translateY(-12px)}}.demo-grid{align-items:start;gap:18px;display:grid}.vision-grid{grid-template-columns:minmax(0,1.14fr) minmax(320px,.86fr)}.panel{min-width:0}.main-panel{gap:18px;display:grid}.stepper-card{border-radius:var(--radius-lg);padding:18px}.stepper-head{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:14px;display:flex}.stepper-kicker{color:var(--muted);margin:0 0 5px;font-size:.82rem}.stepper-head h3{margin:0;font-size:1.18rem}.stepper-subcopy{color:var(--muted);margin:6px 0 0;font-size:.92rem}.step-counter{text-align:center;min-width:60px;color:var(--text);background:#ffffff0f;border-radius:999px;padding:10px 12px;font-weight:700}.progress-track{background:#ffffff0d;border-radius:999px;height:10px;margin-bottom:16px;position:relative;overflow:hidden}.progress-bar{background:linear-gradient(90deg, var(--primary), var(--primary-3), var(--primary-2));border-radius:999px;height:100%}.step-chip-row{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;display:grid}.step-chip{color:var(--text);text-align:left;cursor:pointer;background:#ffffff09;border:1px solid #ffffff0f;border-radius:18px;align-items:center;gap:10px;padding:12px;transition:transform .18s,border-color .18s,background .18s;display:flex}.step-chip:hover{transform:translateY(-1px)}.step-chip.is-active{border-color:color-mix(in srgb, var(--primary) 40%, transparent);background:color-mix(in srgb, var(--primary) 12%, transparent)}.step-chip.is-done{border-color:color-mix(in srgb, var(--primary-2) 28%, transparent);background:color-mix(in srgb, var(--primary-2) 8%, transparent)}.step-chip-number{background:#ffffff14;border-radius:999px;flex:none;place-items:center;width:30px;height:30px;font-weight:700;display:grid}.step-chip-copy{gap:2px;display:grid}.step-chip-copy strong{font-size:.92rem;font-weight:700}.step-chip-copy small{color:var(--muted);font-size:.76rem}.step-stage{min-height:440px}.card{border-radius:var(--radius-lg);padding:20px;transition:transform .18s,border-color .18s,background .18s}.big-card{min-height:440px}.card:hover{border-color:#ffffff1f;transform:translateY(-2px)}.card-head h2,.card-hero-head h2{margin:0 0 8px;font-size:1.18rem}.card-head p,.card-hero-head p{color:var(--muted);margin:0;font-size:.95rem;line-height:1.6}.card-hero-head{justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:16px;display:flex}.eyebrow{letter-spacing:.08em;text-transform:uppercase;color:color-mix(in srgb, var(--primary) 76%, var(--text));margin-bottom:8px;font-size:.78rem;display:inline-block}.info-banner{background:color-mix(in srgb, var(--primary) 10%, transparent);border:1px solid color-mix(in srgb, var(--primary) 18%, transparent);color:var(--muted-strong);border-radius:18px;flex-wrap:wrap;gap:8px;margin-bottom:18px;padding:14px 16px;line-height:1.55;display:flex}.form-section,.preset-block{border:1px solid var(--card-border);background:#ffffff08;border-radius:22px;padding:16px}.form-section+.form-section,.form-section+.preset-block,.preset-block+.field{margin-top:14px}.section-head{margin-bottom:14px}.section-head h3{margin:0;font-size:1rem}.section-head p{color:var(--muted);margin:6px 0 0;font-size:.92rem;line-height:1.5}.section-head.compact{margin-bottom:10px}.grid-two,.grid-three,.render-settings-grid,.export-grid{gap:12px;display:grid}.grid-two,.render-settings-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-three{grid-template-columns:repeat(3,minmax(0,1fr))}.field{gap:8px;display:grid}.field+.field{margin-top:14px}.field-label-row{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:10px;display:flex}.field-label-row span{color:var(--muted-strong);font-size:.9rem;font-weight:600}.field-label-row small{color:var(--muted);font-size:.78rem}.field input,.field select,.field textarea{border:1px solid var(--card-border);background:var(--input);width:100%;color:var(--text);border-radius:var(--radius-md);outline:none;padding:14px;transition:border-color .16s,box-shadow .16s,transform .16s,background .16s}.field input::placeholder,.field textarea::placeholder{color:color-mix(in srgb, var(--muted) 80%, transparent)}.field textarea{resize:vertical;min-height:138px}.field input:focus,.field select:focus,.field textarea:focus{border-color:color-mix(in srgb, var(--primary) 60%, transparent);box-shadow:0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent)}.letter-area{min-height:360px;line-height:1.7}.editor-stats-row{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:16px;display:grid}.editor-stat,.preview-status-chip{border:1px solid var(--card-border);background:#ffffff0a;border-radius:18px;gap:4px;padding:12px 14px;display:grid}.editor-stat span,.preview-status-chip span{color:var(--muted);font-size:.78rem}.editor-stat strong,.preview-status-chip strong{font-size:.95rem}.preset-row{flex-wrap:wrap;gap:10px;display:flex}.preset-chip{border:1px solid var(--card-border);color:var(--text);cursor:pointer;background:#ffffff0b;border-radius:999px;min-height:40px;padding:10px 14px;transition:transform .16s,border-color .16s,background .16s}.preset-chip:hover{border-color:color-mix(in srgb, var(--primary) 28%, transparent);background:color-mix(in srgb, var(--primary) 10%, transparent);transform:translateY(-1px)}.action-row{flex-wrap:wrap;gap:10px;margin-top:16px;display:flex}.btn{cursor:pointer;border:0;border-radius:16px;min-height:48px;padding:12px 16px;transition:transform .18s,opacity .18s,filter .18s,border-color .18s}.btn:hover{transform:translateY(-1px)}.btn:disabled{opacity:.65;cursor:not-allowed;transform:none}.btn-primary{color:#fff;background:linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 70%, black))}.btn-secondary{color:#fff;background:linear-gradient(135deg,#22304a,#314566)}.btn-ghost{color:var(--text);border:1px solid var(--card-border);background:0 0}.export-grid{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:8px}.export-tile{border:1px solid var(--card-border);min-height:88px;color:var(--text);text-align:left;cursor:pointer;background:#ffffff0a;border-radius:22px;align-content:center;gap:6px;padding:16px;transition:transform .18s,border-color .18s,background .18s;display:grid}.export-tile span{color:var(--muted);font-size:.82rem}.export-tile strong{font-size:1rem}.export-tile:hover{border-color:color-mix(in srgb, var(--primary) 28%, transparent);transform:translateY(-1px)}.export-tile:disabled{opacity:.6;cursor:not-allowed;transform:none}.export-tile-primary{background:linear-gradient(135deg, color-mix(in srgb, var(--primary) 20%, transparent), #ffffff0a);border-color:color-mix(in srgb, var(--primary) 30%, transparent)}.export-tile-muted{background:#ffffff06}.status-line{color:var(--muted-strong);margin:14px 0 0;font-size:.95rem;line-height:1.55}.preview-card{position:sticky;top:18px}.preview-card-vision{overflow:hidden}.preview-status-row{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:16px 0 14px;display:grid}.preview-status-chip.is-live{border-color:color-mix(in srgb, var(--primary) 30%, transparent);background:color-mix(in srgb, var(--primary) 10%, transparent)}.preview-stack{position:relative}.preview-glow{background:radial-gradient(circle at 50% 10%, color-mix(in srgb, var(--primary) 22%, transparent), transparent 38%), radial-gradient(circle at 50% 100%, color-mix(in srgb, var(--primary-2) 16%, transparent), transparent 30%);filter:blur(16px);border-radius:24px;position:absolute;inset:0;transform:scale(.98)}.preview-box{aspect-ratio:3/4;background:var(--paper);border:1px solid #0f172a14;border-radius:24px;place-items:center;display:grid;position:relative;overflow:hidden}.preview-box-vision{box-shadow:inset 0 1px #fff9,0 12px 30px #0f172a14}.preview-empty{text-align:center;max-width:280px;color:var(--paper-text);padding:18px;line-height:1.6}.preview-image{object-fit:contain;width:100%;height:100%}.link-stack{flex-wrap:wrap;gap:12px;margin-top:14px;display:flex}.link-stack a,.link-stack .link-button{appearance:none;text-align:left;cursor:pointer;width:fit-content;color:var(--primary);font:inherit;background:0 0;border:0;padding:0;text-decoration:underline}.meta-card{border:1px solid var(--card-border);background:#ffffff0a;border-radius:18px;margin-top:14px;padding:14px}.meta-label{color:var(--muted);margin-bottom:6px;font-size:.82rem;display:block}.meta-card p{color:var(--text);margin:0;line-height:1.6}.install-btn,.install-badge{border-radius:999px;justify-content:center;align-items:center;width:fit-content;min-height:44px;padding:10px 14px;font-size:.92rem;display:inline-flex}.install-btn{border:1px solid color-mix(in srgb, var(--primary) 30%, transparent);color:#fff;background:linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary-3) 70%, black));cursor:pointer;box-shadow:0 10px 26px color-mix(in srgb, var(--primary) 18%, transparent);transition:transform .18s,filter .18s,opacity .18s}.install-btn:hover{filter:brightness(1.03);transform:translateY(-1px)}.install-btn:disabled{opacity:.72;cursor:not-allowed;transform:none}.install-badge{border:1px solid color-mix(in srgb, var(--primary-2) 28%, transparent);color:var(--text);background:color-mix(in srgb, var(--primary-2) 10%, transparent)}.install-help-card{-webkit-backdrop-filter:blur(10px);background:#ffffff0a;border:1px solid #ffffff1a;border-radius:22px;padding:16px}.install-help-badge-row{flex-wrap:wrap;gap:8px;margin-bottom:10px;display:flex}.install-help-badge{border:1px solid color-mix(in srgb, var(--primary) 22%, transparent);background:color-mix(in srgb, var(--primary) 10%, transparent);min-height:28px;color:var(--text);border-radius:999px;justify-content:center;align-items:center;padding:6px 10px;font-size:.75rem;display:inline-flex}.install-help-badge-muted{border-color:var(--card-border);background:#ffffff0a}.install-help-head h3{margin:0;font-size:1rem;font-weight:700}.install-help-head p{opacity:.84;margin:6px 0 0;font-size:.92rem;line-height:1.5}.install-help-list{gap:8px;margin:12px 0 0;padding-left:18px;font-size:.94rem;line-height:1.5;display:grid}.install-help-list.compact{gap:6px;font-size:.9rem}.animated-svg-host,.preview-fallback,.preview-loading{width:100%;height:100%}.animated-svg-host{justify-content:center;align-items:center;padding:8px;display:flex}.animated-svg-host svg{width:100%;height:100%;display:block}.preview-loading{color:var(--paper-text);place-items:center;gap:12px;font-size:.96rem;display:grid}.preview-loading-dot{background:linear-gradient(135deg, var(--primary), var(--primary-3));width:14px;height:14px;box-shadow:0 0 0 0 color-mix(in srgb, var(--primary) 28%, transparent);border-radius:999px;animation:1.2s ease-in-out infinite pulseDot}@keyframes pulseDot{0%{box-shadow:0 0 0 0 color-mix(in srgb, var(--primary) 32%, transparent);transform:scale(.95)}70%{transform:scale(1.08);box-shadow:0 0 0 12px #0000}to{transform:scale(.95);box-shadow:0 0 #0000}}.mobile-action-bar{left:12px;right:12px;bottom:max(12px, env(safe-area-inset-bottom));z-index:40;border:1px solid var(--card-border);background:color-mix(in srgb, var(--bg-elevated) 92%, transparent);-webkit-backdrop-filter:blur(18px);border-radius:24px;gap:12px;padding:12px;display:none;position:fixed;box-shadow:0 18px 38px #02061740}.mobile-bar-head{gap:3px;display:grid}.mobile-bar-head span{color:var(--muted);font-size:.78rem}.mobile-bar-head strong{font-size:.98rem}.mobile-bar-actions{align-items:center;gap:10px;display:flex}.mobile-main-btn,.mobile-mini-btn{cursor:pointer;border:0;border-radius:16px;min-height:48px;padding:14px}.mobile-main-btn{color:#fff;background:linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 70%, black));flex:1;font-weight:700}.mobile-mini-btn{min-width:84px;color:var(--text);background:#ffffff12}.mobile-mini-btn:disabled,.mobile-main-btn:disabled{opacity:.55;cursor:not-allowed}@media (max-width:1180px){.hero-toolbar-vision,.vision-grid{grid-template-columns:1fr}.preview-card{position:static}}@media (max-width:980px){.hero-feature-grid,.editor-stats-row,.preview-status-row,.step-chip-row{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:760px){:root{--space-page-x:12px;--space-page-y:14px}.page-shell{padding-bottom:calc(146px + env(safe-area-inset-bottom))}.hero-card{min-height:auto;padding:18px}.hero-title{font-size:2.45rem;line-height:1.01}.hero-copy{font-size:.96rem}.hero-feature-grid,.grid-two,.grid-three,.render-settings-grid,.export-grid,.editor-stats-row,.preview-status-row{grid-template-columns:1fr}.card,.stepper-card,.hero-card{border-radius:22px}.step-chip-row{scrollbar-width:none;grid-auto-columns:minmax(180px,1fr);grid-auto-flow:column;padding-bottom:4px;display:grid;overflow-x:auto}.step-chip-row::-webkit-scrollbar{display:none}.step-chip{min-height:64px}.step-chip-copy small{display:block}.big-card,.step-stage{min-height:unset}.preview-panel{order:-1}.preview-box{aspect-ratio:4/5}.palette-row{grid-template-columns:1fr 1fr;display:grid}.hero-actions-inline,.hero-install-stack,.install-btn,.install-badge{width:100%}.install-btn,.install-badge{justify-content:center}.card-hero-head,.stepper-head,.field-label-row{flex-direction:column;align-items:flex-start}.action-row{flex-direction:column}.btn,.preset-chip{width:100%}.letter-area{min-height:320px}.mobile-action-bar{display:grid}}.steps-container{gap:12px;margin-top:12px;padding-bottom:6px;display:grid;overflow-x:auto}.step-card{background:#ffffff0a;border:1px solid #ffffff14;border-radius:18px;flex-shrink:0;align-items:center;gap:10px;min-width:160px;padding:14px;transition:all .25s;display:flex}.step-card.active{background:linear-gradient(135deg,#7c3aed40,#10b98140);border:1px solid #7c3aed66}.step-number{background:#ffffff14;border-radius:12px;justify-content:center;align-items:center;width:34px;height:34px;font-weight:600;display:flex}.step-title{font-size:13px;font-weight:600}.step-desc{opacity:.6;font-size:11px}@media (max-width:640px){.word-count,.step-status,.step-counter{display:none}}*,:before,:after{box-sizing:border-box}main,section,aside,div{min-width:0}input,textarea,select,button{min-width:0;max-width:100%}.letter-demo-shell,.letter-demo-layout,.panel,.card,.step-stage,.preview-panel,.preview-card,.form-card,.stage-card{width:100%;min-width:0;max-width:100%}@media (max-width:640px){.page-shell,.demo-shell,.workspace-shell,.letter-demo-shell,.letter-demo-layout{width:100%;max-width:100%;margin-left:0;margin-right:0;padding-left:14px;padding-right:14px}.panel,.card,.preview-card,.form-card,.stage-card{width:100%;min-width:0;max-width:100%;padding-left:16px;padding-right:16px}.steps-container{grid-template-columns:1fr 1fr;gap:10px;width:100%;max-width:100%;padding-bottom:0;display:grid;overflow:visible}.step-card{border-radius:18px;width:100%;min-width:0;padding:14px}.step-number{flex:0 0 32px;width:32px;height:32px}.step-content{min-width:0}.step-title,.step-desc,.card-head h2,.card-head p,.step-stage h1,.step-stage h2,.step-stage p{overflow-wrap:break-word;word-break:break-word}.field,.field-group,.form-grid,.form-stack,.field input,.field textarea,.field select{width:100%;min-width:0;max-width:100%}}
