@font-face{font-family:CADProps Rounded;font-style:normal;font-weight:700 900;font-display:swap;src:url(/assets/fonts/nunito-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:CADProps Rounded;font-style:normal;font-weight:700 900;font-display:swap;src:url(/assets/fonts/nunito-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}:root{--color-text-primary: #191b2c;--color-text-secondary: #60667b;--color-text-placeholder: #6c7285;--color-text-highlight: #e86003;--color-action-primary: #b7470c;--color-action-primary-hover: #923506;--color-action-primary-soft: #fff1e4;--color-action-primary-border: #efcbb0;--color-action-on-primary: #fff;--color-bg-page: #f7f4ef;--color-bg-panel: #fffefa;--color-bg-subtle: #faf7f2;--color-bg-field: #fff;--color-border-default: #e9e0d9;--color-border-field: #d7cec6;--color-border-upload: #c9b7e9;--color-bg-lavender: #f6f2fb;--color-danger-text: #a52b3a;--color-danger-bg: #fff0f2;--color-danger-border: #edc4cb;--color-success-text: #246849;--color-success-bg: #eff8f1;--color-success-border: #bedec9;--color-warning-text: #80560c;--color-warning-bg: #fff7e5;--color-warning-border: #e8d4a5;--color-info-text: #315b88;--color-info-bg: #eef5fc;--color-info-border: #bfd2e7;--color-backdrop: #191b2c66;--color-decoration-peach: #ffeade;--color-decoration-peach-soft: #fff0e7;--color-decoration-lavender: #f0ebff;--color-decoration-lavender-soft: #f3eeff;--color-border-card-hover: #e7b78e;--color-border-upload-dash: #d5c8f4;--color-bg-footer: #f7f0e8;--color-border-footer: #e9dfd4;--color-diagnostic-warning: #9a651c;--color-diagnostic-error: #b74c3e;--ink: var(--color-text-primary);--muted: var(--color-text-secondary);--accent: var(--color-action-primary);--accent-strong: var(--color-action-primary-hover);--accent-soft: var(--color-action-primary-soft);--accent-line: var(--color-action-primary-border);--line: var(--color-border-default);--surface: var(--color-bg-subtle);--page: var(--color-bg-page);--panel: var(--color-bg-panel);--field: var(--color-bg-field);--lavender-soft: var(--color-bg-lavender);--danger: var(--color-danger-text);--danger-soft: var(--color-danger-bg);--body-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--display-font: "CADProps Rounded", var(--body-font);--text-caption: 12px;--text-ui: 14px;--text-body: 16px;--text-reading: 17px;--text-control-large: 18px;--weight-ui: 600;--weight-heading: 800;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-6: 24px;--space-8: 32px;--space-12: 48px;--space-16: 64px;--control-height: 34px;--control-height-form: 38px;--control-height-upload: 56px;--radius-compact: 10px;--radius-field: 8px;--radius-control: 8px;--radius-floating: 14px;--radius-card: 12px;--radius-panel: 14px;--ui-feedback-duration: .16s;--ui-surface-duration: .18s;--ui-ease: cubic-bezier(.2, .7, .2, 1);--ui-shadow-rest: 0 6px 20px #35263808;--ui-shadow-raised: 0 4px 16px #3526380f;--ui-shadow-overlay: 0 20px 56px #3526382e;--font-mono: ui-monospace, SFMono-Regular, Consolas, monospace;--weight-regular: 400;--weight-emphasis: 700;--weight-display: 900;--line-heading: 1.2;--line-ui: 1.5;--line-body: 1.65;--line-reading: 1.9;--text-small: 13px;--text-title-xs: 20px;--text-title-sm: 24px;--text-title-md: 32px;--text-title-lg: 36px;--space-0: 0px;--space-5: 20px;--space-7: 28px;--space-10: 40px;--space-14: 56px;--space-20: 80px;--space-24: 96px;--radius-none: 0px;--radius-full: 999px;--border-width: 1px;--focus-width: 2px;--focus-offset: 3px;--opacity-disabled: .4;--preview-backdrop-blur: 6px;--opacity-preview-backdrop: .75;--control-height-compact: 32px;--icon-size-sm: 16px;--icon-size-md: 18px;--icon-size-lg: 24px;--layout-content-max: 1280px;--layout-reading-max: 760px;--layout-reading-grid-max: 1076px;--layout-sidebar-width: 260px;--layout-gutter: clamp(20px, 4vw, 52px);--layout-header-height: 82px;--layout-header-compact-height: 72px;--layout-section-space: 48px;--layout-grid-gap: 20px;--breakpoint-small: 700px;--breakpoint-reading: 900px;--breakpoint-wide: 1100px;--breakpoint-workspace-compact: 767px;--breakpoint-touch-tablet: 1024px;--z-base: 0;--z-canvas-overlay: 8;--z-app-header: 15;--z-navigation: 20;--z-popup: 35;--z-progress: 50;--z-skip-link: 100;--button-font: var(--body-font);--button-size: var(--text-ui);--button-weight: var(--weight-ui);--button-radius: var(--radius-control);--button-height: var(--control-height);--button-padding-block: var(--space-2);--button-padding-inline: var(--space-4);--button-gap: var(--space-2);--button-primary-bg: var(--color-action-primary);--button-primary-hover-bg: var(--color-action-primary-hover);--button-primary-text: var(--color-action-on-primary);--button-secondary-bg: var(--color-bg-panel);--button-secondary-hover-bg: var(--color-bg-subtle);--button-secondary-text: var(--color-text-primary);--button-secondary-border: var(--color-border-default);--button-selected-bg: var(--color-action-primary-soft);--button-selected-text: var(--color-action-primary-hover);--button-selected-border: var(--color-action-primary-border);--button-compact-radius: var(--radius-compact);--button-compact-size: var(--text-caption);--button-compact-height: var(--control-height-compact);--button-upload-size: var(--text-control-large);--button-upload-height: var(--control-height-upload);--input-bg: var(--color-bg-field);--input-border: var(--color-border-field);--input-text: var(--color-text-primary);--input-radius: var(--radius-field);--input-height: var(--control-height-form);--focus-color: var(--color-action-primary);--focus-ring: var(--focus-width) solid var(--focus-color);--card-bg: var(--color-bg-panel);--card-border: var(--color-border-default);--card-radius: var(--radius-card);--card-padding: var(--space-6);--card-gap: var(--space-4);--dialog-bg: var(--color-bg-panel);--dialog-radius: var(--radius-panel);--dialog-padding: var(--space-8);--dialog-padding-mobile: var(--space-4);--dialog-shadow: var(--ui-shadow-overlay);--dialog-backdrop: var(--color-backdrop);--field-radius: var(--radius-field);--menu-bg: var(--color-bg-panel);--menu-radius: var(--radius-floating);--menu-shadow: var(--ui-shadow-raised);--upload-radius: var(--radius-panel);--upload-border: var(--color-border-upload);--upload-bg: var(--color-bg-panel);--upload-padding: var(--space-6);--workspace-canvas-bg: var(--color-bg-page);--workspace-panel-bg: var(--color-bg-panel);--workspace-panel-radius: var(--radius-card);--workspace-panel-padding: var(--space-4);--decoration-peach: var(--color-decoration-peach);--decoration-peach-soft: var(--color-decoration-peach-soft);--decoration-lavender: var(--color-decoration-lavender);--decoration-lavender-soft: var(--color-decoration-lavender-soft);--motion-feedback: var(--ui-feedback-duration);--motion-overlay: var(--ui-surface-duration);--motion-ease: var(--ui-ease);--heading-home-size: clamp(32px, 3.4vw, 48px);--heading-hero-size: clamp(36px, 4.2vw, 58px);--heading-home-mobile-size: clamp(26px, 7vw, 36px);--heading-hero-mobile-size: clamp(30px, 7vw, 40px);--heading-section-size: clamp(26px, 2.7vw, 36px);--heading-article-size: 29px;--heading-article-sub-size: 22px;--heading-auth-size: clamp(27px, 5vw, 34px);--heading-home-leading: 1.12;--heading-hero-leading: 1.12;--heading-mobile-leading: 1.14;--heading-home-tracking: -2.4px;--heading-hero-tracking: -1.8px;--heading-mobile-tracking: -1px;--text: var(--ink);--muted-text: var(--muted);--accent-text: var(--accent-strong);--danger-text: var(--danger);--compat-color-343b4f: #343b4f;--compat-color-41475a: #41475a;--compat-color-4e4d62: #4e4d62;--compat-color-50586b: #50586b;--compat-color-514063: #514063;--compat-color-555a6e: #555a6e;--compat-color-565365: #565365;--compat-color-57312103: #57312103;--compat-color-57312104: #57312104;--compat-color-57312106: #57312106;--compat-color-58351e: #58351e;--compat-color-5b457f: #5b457f;--compat-color-663c67: #663c67;--compat-color-686277: #686277;--compat-color-8a63b0: #8a63b0;--compat-color-9b440c: #9b440c;--compat-color-a74618: #a74618;--compat-color-a74711: #a74711;--compat-color-b598d7: #b598d7;--compat-color-c8bfca: #c8bfca;--compat-color-d5a87f: #d5a87f;--compat-color-d65a0b: #d65a0b;--compat-color-d9aa84: #d9aa84;--compat-color-dad2ca: #dad2ca;--compat-color-ddd6e9: #ddd6e9;--compat-color-e3d8ed: #e3d8ed;--compat-color-e4dce9: #e4dce9;--compat-color-e6b98f: #e6b98f;--compat-color-e6dcf2: #e6dcf2;--compat-color-e7daf5: #e7daf5;--compat-color-e7ded6: #e7ded6;--compat-color-e9e1d8: #e9e1d8;--compat-color-eee7f6: #eee7f6;--compat-color-efcdb1: #efcdb1;--compat-color-efdbc7: #efdbc7;--compat-color-f0dfd0: #f0dfd0;--compat-color-f1edf4: #f1edf4;--compat-color-f3effd: #f3effd;--compat-color-f4d8c2: #f4d8c2;--compat-color-f4effb: #f4effb;--compat-color-f4effc: #f4effc;--compat-color-f5f0fc: #f5f0fc;--compat-color-f5f1f8: #f5f1f8;--compat-color-f8f3ff: #f8f3ff;--compat-color-f8f4ee: #f8f4ee;--compat-color-faf5ff: #faf5ff;--compat-color-faf6f0: #faf6f0;--compat-color-faf7f1: #faf7f1;--compat-color-fcfaff: #fcfaff;--compat-color-fff0e1: #fff0e1;--compat-color-fff0e3: #fff0e3;--compat-color-fff1e5: #fff1e5;--compat-color-fff2e6: #fff2e6;--compat-color-fff3e8: #fff3e8;--compat-color-fff7ec: #fff7ec;--compat-color-fff7f0: #fff7f0;--compat-color-fff8f0: #fff8f0;--compat-color-3526380b: #3526380b;--compat-color-f5f0ff: #f5f0ff;--compat-color-fff3e9: #fff3e9;--compat-color-fff7ef: #fff7ef;--text-tiny: 11px;--text-badge: 10px;--text-body-small: 15px;--text-title-compact: 26px;--weight-label: 650;--radius-small: 8px;--radius-soft: 16px;--radius-figure: 12px;--radius-upload-inner: 15px;--radius-code: 5px;--radius-tag: 4px;--space-hair: 1px;--space-half: 2px;--space-dense: 3px;--space-optical: 6px;--line-default: 1.6;--line-relaxed: 1.75;--line-copy: 1.7;--line-prose: 1.8;--line-caption: 1.4;--line-heading-long: 1.35;--line-faq: 1.85;--line-hero-mobile: 1.16;--button-line-height: 20px;--tracking-section: -.8px;--tracking-article: -.55px;--tracking-subheading: -.35px;--tracking-control: -.4px;--shadow-card: 0 3px 8px var(--compat-color-57312103);--shadow-reading: 0 6px 20px var(--compat-color-57312104);--shadow-filter: 0 2px 5px var(--compat-color-57312106);--shadow-selected: 0 2px 8px var(--compat-color-3526380b);--opacity-solid: 1;--illustration-tool-size: 80px;--decoration-drift-distance: 24px;--decoration-drift-mobile-distance: 10px;--motion-decoration-duration: 10s;--motion-decoration-ease: ease-in-out;--z-decoration: -1;--home-intro-top: 8px;--home-intro-mobile-top: 8px;--home-eyebrow-gap: var(--space-2);--home-heading-gap: var(--space-3);--home-lead-size: var(--text-ui);--home-lead-mobile-size: var(--text-small);--home-lead-gap: var(--space-5);--home-lead-mobile-gap: var(--space-4);--home-lead-leading: 1.6;--motion-decoration-secondary-duration: 12s;--file-nav-width: 232px;--file-nav-rail-width: 56px;--file-nav-control-height: var(--control-height);--file-nav-padding: var(--space-3);--file-nav-rail-padding: calc( (var(--file-nav-rail-width) - var(--file-nav-control-height) - var(--border-width)) / 2 );--file-nav-gap: var(--space-1);--file-nav-section-gap: var(--space-4);--file-nav-title-size: var(--text-ui);--file-nav-filename-size: var(--text-small);--file-nav-radius: var(--radius-compact);--file-nav-duration: var(--ui-surface-duration);--file-nav-leading: var(--line-ui);--file-nav-selected-bg: var(--button-selected-bg);--file-nav-selected-text: var(--button-selected-text);--file-nav-hover-bg: var(--surface);--button-upload-width: 264px;--button-upload-mobile-width: 300px;--button-upload-mobile-height: 52px;--upload-folder-size: 88px;--opacity-hidden: 0;--decoration-circle-radius: 50%;--decoration-edge-gap: var(--space-4);--decoration-anchor-start: 0%;--decoration-anchor-end: 100%;--decoration-hero-peach-top: 96px;--decoration-hero-lavender-top: 192px;--decoration-hero-mobile-peach-top: 128px;--decoration-hero-mobile-lavender-top: 256px;--decoration-page-peach-top: 62%;--decoration-page-lavender-top: 82%;--motion-decoration-page-duration: 11s;--decoration-circle-1-size: 240px;--decoration-circle-1-mobile-size: 96px;--motion-decoration-circle-1-delay: 0s;--decoration-circle-2-size: 280px;--decoration-circle-2-mobile-size: 112px;--motion-decoration-circle-2-delay: -3s;--decoration-circle-3-size: 200px;--decoration-circle-3-mobile-size: 88px;--motion-decoration-circle-3-delay: -7s;--decoration-circle-4-size: 240px;--decoration-circle-4-mobile-size: 104px;--motion-decoration-circle-4-delay: -9s;--color-bg-segmented: #f1ece5;--color-bg-inverse: #191b2c;--color-text-on-inverse: #fffefa;--color-text-body: #3a3f52;--color-text-faint: #8a8f9e;--color-border-divider: #efe8e1;--color-border-hairline: #f3eee8;--color-action-primary-softer: #fff7f0;--color-progress-track: #f0e8df;--color-skeleton: var(--color-border-divider);--color-success-dot: #2f8a5f;--color-info-strong: #15548f;--radius-segment: 7px;--radius-label: 6px;--control-height-touch: 44px;--ui-shadow-segment: 0 1px 2px #35263814;--ui-shadow-toast: 0 12px 32px #191b2c40;--text-title-page: 22px;--text-metric: 17px;--text-metric-hero: 26px;--text-metric-hero-mobile: 24px;--workspace-header-height: 56px;--workspace-inspector-width: 312px;--workspace-compare-panel-width: 340px;--workspace-filename-width: 290px;--workspace-logo-width: 116px;--workspace-tool-width: 56px;--workspace-tool-height: 48px;--workspace-progress-card-width: 400px;--workspace-popover-width: 400px;--workspace-share-width: 440px;--workspace-account-width: 300px;--workspace-empty-width: 620px;--workspace-avatar-size: 30px;--workspace-dot-size: 6px;--workspace-progress-height: 4px;--workspace-segmented-bg: var(--color-bg-segmented);--workspace-toolbar-shadow: var(--ui-shadow-raised);--popover-radius: var(--radius-floating);--popover-shadow: var(--ui-shadow-overlay);--toast-bg: var(--color-bg-inverse);--toast-text: var(--color-text-on-inverse);--toast-shadow: var(--ui-shadow-toast);--skeleton-radius: var(--radius-label);--letter-spacing-metric: -.5px;--workspace-structure-width: 260px;--workspace-dot-effect: 5px;--motion-progress-sweep: 1.6s;--library-search-max: 360px;--library-thumb-width: 52px;--library-thumb-height: 40px;--library-row-height: 60px;--library-content-max: 1240px;--library-grid-card: 220px;--library-col-check: 44px;--library-col-status: 150px;--library-col-size: 110px;--library-col-used: 130px;--library-col-delete: 120px;--library-col-actions: 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