:root { color-scheme: light; --bg: #f6f7f2; --surface: #fff; --ink: #17322b; --muted: #586b63; --line: #dce4db; --accent: #226443; --soft: #eaf1e8; --warm: #edece1; --demo: #dde9df; --shadow: 0 24px 60px rgba(26, 57, 41, .09); }
:root[data-theme="dark"] { color-scheme: dark; --bg: #111c19; --surface: #192a23; --ink: #e7eee5; --muted: #b4c2b9; --line: #32483c; --accent: #a7d9b5; --soft: #213d2c; --warm: #2c3328; --demo: #244335; --shadow: 0 24px 60px rgba(0, 0, 0, .15); }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
button, a, select, summary { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
[hidden] { display: none !important; }
.shell { width: min(1180px, calc(100% - 80px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip { position: fixed; z-index: 5; top: 12px; left: 12px; padding: 12px 20px; background: var(--surface); border: 1px solid var(--accent); transform: translateY(-180%); }
.skip:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 94px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 12px; line-height: 1.2; font-size: 20px; font-weight: 750; letter-spacing: -.6px; }
.brand img { border-radius: 10px; }
.brand small { display: block; margin-top: 5px; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: .4px; }
.header-nav { margin-left: auto; display: flex; gap: 28px; font-size: 13px; font-weight: 600; }
.header-nav a:hover, .site-footer a:hover { text-decoration: underline; text-underline-offset: 4px; }
.preferences { display: flex; align-items: center; gap: 10px; }
.preferences select { max-width: 135px; font-size: 12px; padding: 9px 26px 9px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 7px; color: var(--ink); }
.theme-toggle { width: 36px; height: 36px; display: grid; place-items: center; background: transparent; border: 1px solid var(--line); border-radius: 50%; color: var(--ink); }
.theme-toggle svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.hero { display: grid; grid-template-columns: 1.04fr 1fr; align-items: center; gap: 70px; padding-block: 76px 62px; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin: 0 0 18px; color: var(--accent); font-size: 10px; font-weight: 750; letter-spacing: 1.6px; line-height: 1.6; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex: 0 0 auto; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(40px, 4.2vw, 57px); letter-spacing: -2.8px; line-height: 1.08; font-weight: 700; margin-bottom: 25px; }
h1 em { font-style: normal; font-weight: 500; color: var(--accent); }
.lead { max-width: 460px; font-size: 17px; color: var(--muted); line-height: 1.8; margin-bottom: 28px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 28px; min-height: 48px; padding: 13px 20px; border: 1px solid var(--line); border-radius: 7px; font-size: 13px; font-weight: 650; transition: transform .15s, background .15s; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: #226443; color: #fff; border-color: #226443; }
.button.primary:hover { background: #1b5237; }
.button.secondary { background: transparent; }
.hero-note { font-size: 11px; color: var(--muted); margin: 20px 0 0; letter-spacing: .15px; }
.file-demo { margin: 0; min-width: 0; background: var(--demo); border: 1px solid var(--line); border-radius: 14px; padding: 22px; box-shadow: var(--shadow); transform: rotate(1deg); }
.demo-heading { display: flex; align-items: center; justify-content: space-between; font-size: 9px; font-weight: 700; letter-spacing: 1.4px; margin-bottom: 15px; color: var(--muted); }
.demo-mark { font-size: 21px; font-weight: 400; line-height: 1; }
.format-picker { display: inline-flex; gap: 4px; padding: 4px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 18px; }
.format-picker button { background: transparent; color: var(--ink); border: 0; border-radius: 5px; font: 650 10px/1.5 "Segoe UI", sans-serif; padding: 6px 15px; letter-spacing: .5px; }
.format-picker button[aria-pressed="true"] { background: var(--surface); box-shadow: 0 2px 5px rgba(20, 40, 30, .06); }
.format-picker button:hover { background: var(--soft); }
.preview-window { background: var(--surface); border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.preview-toolbar { display: flex; align-items: center; gap: 9px; padding: 11px 14px; border-bottom: 1px solid var(--line); font-size: 11px; font-weight: 550; }
.file-icon { width: 21px; height: 24px; display: grid; place-items: center; border-radius: 3px; background: #226443; color: white; font-size: 10px; font-weight: 700; }
[data-preview-format="docx"] .file-icon { background: #32619f; }
[data-preview-format="pptx"] .file-icon { background: #a35437; }
.toolbar-dots { margin-left: auto; color: var(--muted); letter-spacing: 2px; }
.preview-sheet, .preview-document, .preview-slide { min-height: 255px; padding: 23px 22px; }
.sheet-title { font-weight: 700; font-size: 19px; line-height: 1.3; margin-bottom: 18px; }
.sheet-title small { display: block; font-size: 10px; font-weight: 400; color: var(--muted); margin-top: 5px; }
.sample-table { width: 100%; border-collapse: collapse; font-size: 10px; line-height: 1.5; }
.sample-table th, .sample-table td { border: 1px solid var(--line); padding: 8px 9px; text-align: left; }
.sample-table thead { background: var(--soft); }
.sample-table th { font-weight: 650; }
.sample-table td:nth-child(2) { text-align: center; }
.sample-table .edited-cell { position: relative; outline: 2px solid var(--accent); outline-offset: -2px; background: var(--soft); font-weight: 750; }
.cell-corner { position: absolute; bottom: -3px; right: -3px; width: 6px; height: 6px; background: var(--accent); }
.edit-caption { display: flex; align-items: center; gap: 6px; margin-top: 12px; font-size: 9px; color: var(--muted); }
.edit-dot { width: 5px; height: 5px; background: var(--accent); border-radius: 50%; }
.document-kicker, .preview-slide > p { font-size: 8px; font-weight: 650; letter-spacing: 1px; color: var(--muted); margin-bottom: 10px; }
.preview-document h3 { font-size: 24px; line-height: 1.25; margin-bottom: 9px; }
.preview-document > p:not(.document-kicker) { font-size: 10px; }
.document-line { width: 100%; height: 4px; margin-block: 10px; border-radius: 2px; background: var(--line); }
.document-line.short { width: 58%; }
.document-line.medium { width: 80%; }
.document-highlight { display: inline-block; padding: 4px 6px; margin: 9px 0 4px; background: var(--soft); border-left: 2px solid var(--accent); }
.preview-slide { position: relative; background: var(--soft); }
.slide-number { position: absolute; top: 22px; right: 22px; font-size: 9px; color: var(--muted); }
.preview-slide > p { margin-top: 10px; }
.preview-slide h3 { max-width: 210px; font-size: 26px; line-height: 1.2; letter-spacing: -.5px; margin-bottom: 12px; }
.slide-bars { display: flex; gap: 10px; align-items: flex-end; height: 65px; }
.slide-bars span { width: 27px; height: 30%; border-radius: 3px 3px 0 0; background: var(--accent); opacity: .8; }
.slide-bars span:nth-child(2) { height: 55%; opacity: .55; }
.slide-bars span:nth-child(3) { height: 70%; opacity: .65; }
.slide-bars span:nth-child(4) { height: 100%; }
.preview-slide small { display: block; font-size: 9px; color: var(--muted); margin-top: 12px; }
.save-strip { display: flex; align-items: center; gap: 11px; padding: 17px 14px; margin-top: 14px; border-radius: 8px; background: #226443; color: #fff; }
.save-check { width: 29px; height: 29px; display: grid; place-items: center; flex: 0 0 auto; border: 1px solid #75a58a; border-radius: 50%; font-size: 15px; }
.save-strip small { display: block; font-size: 8px; letter-spacing: 1px; color: #d0e6d7; line-height: 1.5; }
.save-strip strong { font-size: 14px; font-weight: 650; }
.save-extension { margin-left: auto; font: 11px/1.5 ui-monospace, Consolas, monospace; color: #d0e6d7; }
.file-demo figcaption { margin-top: 12px; color: var(--muted); text-align: center; font-size: 10px; }
.benefit-strip { display: grid; grid-template-columns: repeat(3, 1fr); padding-block: 22px; border-block: 1px solid var(--line); gap: 24px; }
.benefit-strip p { display: flex; align-items: center; justify-content: center; gap: 12px; font-size: 12px; font-weight: 550; margin: 0; }
.benefit-strip p > span:first-child { font-size: 20px; color: var(--accent); font-weight: 400; }
.section { padding-block: 74px; }
h2 { font-size: clamp(27px, 3vw, 37px); letter-spacing: -1.3px; line-height: 1.2; margin-bottom: 26px; font-weight: 650; }
h3 { font-size: 18px; font-weight: 650; line-height: 1.4; }
.steps { list-style: none; padding: 0; margin: 34px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.steps li { border-top: 1px solid var(--line); padding-top: 22px; display: flex; flex-direction: column; }
.step-number { font-size: 11px; font-weight: 650; color: var(--accent); margin-bottom: 16px; }
.steps h3 { margin-bottom: 11px; }
.steps p { color: var(--muted); font-size: 13px; margin-bottom: 18px; }
.step-path { margin-top: auto; align-self: flex-start; background: var(--soft); font-size: 10px; font-weight: 600; border-radius: 4px; padding: 5px 9px; }
.workflow-note { padding-left: 14px; border-left: 2px solid var(--line); margin: 30px 0 0; font-size: 12px; color: var(--muted); max-width: 850px; }
.formats-section { background: var(--soft); border-block: 1px solid var(--line); }
.section-heading { display: flex; align-items: flex-end; gap: 48px; justify-content: space-between; margin-bottom: 30px; }
.section-heading h2 { margin-bottom: 0; }
.section-lead { max-width: 410px; margin-bottom: 0; font-size: 13px; color: var(--muted); }
.formats-table-wrap { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--surface); }
.formats-table { width: 100%; border-collapse: collapse; font-size: 12px; line-height: 1.65; }
.formats-table th, .formats-table td { text-align: left; padding: 18px 22px; vertical-align: top; border-bottom: 1px solid var(--line); }
.formats-table thead th { background: var(--warm); font-size: 10px; color: var(--muted); font-weight: 650; }
.formats-table tbody th { font-weight: 650; width: 24%; }
.formats-table td:nth-child(2) { width: 33%; }
.formats-table td:last-child { color: var(--muted); }
.formats-table tbody tr:last-child > * { border-bottom: 0; }
code { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 10px; line-height: 1.8; overflow-wrap: anywhere; }
.format-badge { display: inline-grid; place-items: center; width: 24px; height: 28px; border-radius: 4px; margin-right: 10px; font-size: 11px; background: #e8eef9; color: #325c96; vertical-align: middle; }
.format-badge.excel { color: #246243; background: #e6f0e8; }
.format-badge.slides { color: #95442e; background: #f8ede7; }
.format-badge.odf { color: #4e567c; background: #ebedf5; }
.format-badge.neutral { color: #505e54; background: #eceee9; }
.other-formats { display: flex; gap: 35px; padding: 24px 0 18px; border-bottom: 1px solid var(--line); }
.other-formats h3 { font-size: 13px; flex: 0 0 150px; margin: 0; }
.other-formats p { font-size: 12px; color: var(--muted); margin: 0; }
.other-formats code { color: var(--ink); }
.legacy-note { display: flex; align-items: baseline; gap: 12px; font-size: 11px; color: var(--muted); margin: 18px 0 0; }
.legacy-note > span:first-child { display: inline-grid; place-items: center; width: 16px; height: 16px; flex: 0 0 auto; font-size: 10px; border: 1px solid var(--muted); border-radius: 50%; }
.limits-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.limit-card { padding: 28px; border: 1px solid var(--line); border-radius: 10px; }
.limit-card.supported { background: var(--surface); }
.card-symbol { display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--line); border-radius: 50%; color: var(--accent); margin-bottom: 16px; font-size: 14px; }
.limit-card h3 { margin-bottom: 16px; }
.limit-card ul { padding-left: 18px; margin-bottom: 0; color: var(--muted); font-size: 13px; }
.limit-card li { padding-left: 3px; margin-bottom: 12px; }
.limit-card li:last-child { margin-bottom: 0; }
.limit-card li::marker { color: var(--accent); }
.export-notice { display: flex; gap: 18px; padding: 23px 28px; background: var(--warm); border-radius: 8px; margin-top: 22px; }
.export-notice > span { font-size: 23px; color: var(--accent); line-height: 1.2; }
.export-notice h3 { font-size: 14px; margin-bottom: 5px; }
.export-notice p { font-size: 12px; color: var(--muted); margin: 0; }
.faq { display: grid; grid-template-columns: 1fr 1.6fr; gap: 80px; padding-top: 8px; }
.faq h2 { margin-bottom: 14px; }
.faq-list details { border-bottom: 1px solid var(--line); padding-block: 17px; }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { position: relative; padding-right: 32px; list-style: none; font-size: 13px; font-weight: 650; cursor: pointer; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 3px; top: -1px; color: var(--accent); font-size: 18px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: 14px 25px 0 0; color: var(--muted); font-size: 12px; }
.closing { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 34px 40px; margin-bottom: 65px; background: var(--demo); border-radius: 12px; }
.closing .eyebrow { margin-bottom: 10px; }
.closing h2 { font-size: 27px; margin-bottom: 10px; }
.closing p:not(.eyebrow) { font-size: 13px; color: var(--muted); margin: 0; }
.closing .button { flex: 0 0 auto; }
.site-footer { display: flex; align-items: center; gap: 25px; padding-block: 26px 38px; border-top: 1px solid var(--line); font-size: 11px; color: var(--muted); }
.footer-brand { color: var(--ink); font-weight: 750; font-size: 15px; letter-spacing: -.4px; }
.site-footer nav { display: flex; gap: 22px; margin-left: auto; }
@media (min-width: 1450px) { .hero { padding-block: 96px 82px; } }
@media (max-width: 1000px) { .shell { width: calc(100% - 48px); } .hero { gap: 35px; } h1 { font-size: 43px; letter-spacing: -2px; } .header-inner { gap: 24px; } .header-nav { gap: 18px; } .file-demo { padding: 18px; } .preview-sheet, .preview-document, .preview-slide { padding: 20px 15px; } .section-heading { gap: 30px; } .formats-table th, .formats-table td { padding: 15px; } .format-badge { margin-right: 7px; } .faq { gap: 40px; } }
@media (max-width: 760px) { .shell { width: calc(100% - 40px); } .header-inner { min-height: 82px; gap: 12px; flex-wrap: wrap; padding-block: 17px; } .brand { font-size: 17px; gap: 9px; } .brand img { width: 32px; height: 32px; } .header-nav { display: none; } .preferences { margin-left: auto; gap: 7px; } .preferences select { padding-inline: 8px 20px; font-size: 11px; max-width: 119px; } .theme-toggle { width: 32px; height: 32px; } .hero { grid-template-columns: 1fr; gap: 34px; padding-block: 45px 34px; } h1 { font-size: clamp(39px, 8vw, 55px); } .lead { max-width: 540px; font-size: 15px; margin-bottom: 22px; } .hero-note { margin-top: 15px; font-size: 10px; } .file-demo { max-width: 480px; width: 100%; justify-self: center; transform: none; padding: 20px; } .preview-sheet, .preview-document, .preview-slide { padding-inline: 20px; } .benefit-strip { grid-template-columns: 1fr; gap: 12px; padding-block: 20px; } .benefit-strip p { justify-content: flex-start; font-size: 12px; } .benefit-strip p > span:first-child { width: 22px; text-align: center; } .section { padding-block: 45px; } h2 { font-size: 30px; letter-spacing: -1px; } .steps { grid-template-columns: 1fr; gap: 23px; margin-top: 26px; } .steps li { padding-top: 17px; } .step-number { margin-bottom: 10px; } .steps p { margin-bottom: 14px; } .section-heading { display: block; margin-bottom: 24px; } .section-heading h2 { margin-bottom: 16px; } .section-lead { max-width: 550px; } .formats-table thead { display: none; } .formats-table tbody tr { display: grid; padding: 20px; border-bottom: 1px solid var(--line); gap: 9px; } .formats-table tbody tr:last-child { border-bottom: 0; } .formats-table th, .formats-table td, .formats-table tbody th, .formats-table td:nth-child(2) { width: auto; border: 0; padding: 0; } .formats-table tbody th { font-size: 14px; } .formats-table td { padding-left: 34px; } .formats-table code { font-size: 10px; } .other-formats { flex-direction: column; gap: 10px; } .other-formats h3 { flex-basis: auto; } .limits-grid { grid-template-columns: 1fr; gap: 16px; } .limit-card { padding: 23px; } .export-notice { padding: 20px; gap: 14px; } .faq { grid-template-columns: 1fr; gap: 25px; padding-top: 0; } .closing { display: block; padding: 28px 24px; margin-bottom: 36px; } .closing h2 { font-size: 25px; } .closing .button { margin-top: 20px; } .site-footer { flex-wrap: wrap; gap: 12px 20px; padding-block: 24px; } .site-footer > span { flex-basis: 100%; order: 3; } }
@media (max-width: 380px) { .shell { width: calc(100% - 32px); } .brand { font-size: 15px; } .brand img { width: 28px; height: 28px; } .preferences select { max-width: 103px; } .file-demo { padding: 15px; } .preview-sheet, .preview-document, .preview-slide { padding-inline: 13px; } .sample-table th, .sample-table td { padding: 7px 6px; } .button { gap: 17px; padding-inline: 15px; } .save-extension { font-size: 9px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .button { transition: none; } .button:hover { transform: none; } }
.ptp-language-select, :root[data-theme="dark"] .ptp-language-select { --ptp-language-bg: var(--surface); --ptp-language-text: var(--ink); --ptp-language-border: var(--line); --ptp-language-hover: var(--soft); --ptp-language-selected: var(--demo); }
.brand { min-width: 0; flex-shrink: 1; }
.brand > span { min-width: 0; }
.brand img, .preferences { flex-shrink: 0; }
.header-nav { margin-left: 0; margin-inline-start: auto; }
.header-nav a { white-space: nowrap; }
.preferences label { display: inline-flex; }
.preferences .ptp-language-select { font-size: 12px; }
.preferences .language-select-button { min-height: 36px; }
.hero-copy, .section-heading > div, .steps li, .limit-card, .faq > div, .closing > div { min-width: 0; }
h1, h2, h3, .lead, .brand small, .button, .step-path, .formats-table th { overflow-wrap: anywhere; }
.sample-table th, .sample-table td, .formats-table th, .formats-table td { text-align: start; }
.preview-toolbar, .save-extension, #previewFilename, code { direction: ltr; unicode-bidi: isolate; }
.toolbar-dots { margin-left: 0; margin-inline-start: auto; }
.save-extension { margin-left: 0; margin-inline-start: auto; }
.workflow-note { border-left: 0; padding-left: 0; border-inline-start: 2px solid var(--line); padding-inline-start: 14px; }
.limit-card ul { padding-left: 0; padding-inline-start: 18px; }
.limit-card li { padding-left: 0; padding-inline-start: 3px; }
.document-highlight { border-left: 0; border-inline-start: 2px solid var(--accent); }
.format-badge { margin-right: 0; margin-inline-end: 10px; }
.faq-list summary { padding-right: 0; padding-inline-end: 32px; }
.faq-list summary::after { right: auto; inset-inline-end: 3px; }
.faq-list details p { margin-right: 0; margin-inline-end: 25px; }
.site-footer nav { margin-left: 0; margin-inline-start: auto; }
[dir="rtl"] h1, [dir="rtl"] h2, [dir="rtl"] h3, [dir="rtl"] .eyebrow, [dir="rtl"] .demo-heading, [dir="rtl"] .save-strip small { letter-spacing: normal; }
[dir="rtl"] .file-demo { transform: rotate(-1deg); }
[dir="rtl"] .slide-number { right: auto; left: 22px; }
@media (max-width: 1000px) { .format-badge { margin-inline-end: 7px; } }
@media (max-width: 760px) { .preferences { margin-left: 0; margin-inline-start: auto; } .formats-table td { padding-left: 0; padding-inline-start: 34px; } [dir="rtl"] .file-demo { transform: none; } }
@media print { .site-header, .preferences, .actions, .closing .button, .skip { display: none; } :root { --bg: white; --surface: white; --ink: black; --muted: #444; --line: #ccc; --soft: #eee; --accent: #244; --demo: #eee; } .shell { width: 100%; } .hero { padding-block: 20px; gap: 25px; } .file-demo { transform: none; box-shadow: none; break-inside: avoid; } .section { padding-block: 24px; } .limit-card, .steps li, .formats-table tr, details { break-inside: avoid; } .faq { gap: 25px; } .faq details p { display: block; } }