*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-text: #1a1a1a;--color-text-muted: #555;--color-text-light: #777;--color-bg: #EDF0F3;--color-bg-alt: #f5f5f5;--color-bg-dark: #1a1a1a;--color-border: #e0e0e0;--color-label: #888;--max-width: 1140px;--header-height: 64px}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:Noto Sans,system-ui,-apple-system,sans-serif;color:var(--color-text);background:var(--color-bg);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}ul{list-style:none}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.section{padding:56px 0}.section--alt{background:var(--color-bg)}.section--dark{background:var(--color-bg-dark);color:#fff}.section__label{font-size:1.5rem;font-weight:600;letter-spacing:.12em;color:var(--color-label);text-transform:uppercase;text-align:center;margin-bottom:12px}.section__title{font-size:3rem;font-weight:800;text-align:center;margin-bottom:16px;line-height:1.2}.section__subtitle{font-size:1.5rem;line-height:2rem;color:var(--color-text-muted);text-align:center;max-width:560px;margin:0 auto 48px;line-height:1.6}.section__footer-link{text-align:center;margin-top:32px;font-size:1rem;color:var(--color-text-muted)}.section__footer-link a{color:var(--color-text);text-decoration:underline;text-underline-offset:3px}.header{position:absolute;top:0;left:0;right:0;height:var(--header-height);background:#00000059;z-index:100}.header--solid{position:fixed;background:#474747}.header__inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:100%}.header__brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;color:#fff}.header__logo{width:40px;height:40px;border-radius:10px}.header__right,.header__nav{display:flex;align-items:center;gap:32px}.header__nav a{font-size:.925rem;font-weight:500;color:#fff;transition:color .2s}.header__nav a:hover,.header__nav a[aria-current=page]{color:#fff}.header__cta{font-size:.875rem;font-weight:600;padding:5px 20px;border-radius:24px;background:#fff;color:var(--color-text);transition:opacity .2s}.header__cta:hover{opacity:.9}.header__cta--mobile{display:none}.header__menu-btn{display:none;background:none;border:none;cursor:pointer;padding:4px}.header__menu-btn span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;transition:transform .3s,opacity .3s}.hero{position:relative;display:flex;align-items:center;overflow:visible;background:url(/images/hero-bg.webp) center / cover no-repeat}.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(45deg,#000,#0000 55%);z-index:1}.hero__inner{max-width:var(--max-width);margin:0 auto;padding:96px 24px 48px;display:grid;grid-template-columns:3fr 2fr;align-items:end;gap:40px;width:100%}.hero__content{position:relative;z-index:2}.hero__title{font-size:4rem;font-weight:700;line-height:1;color:#fff;margin-bottom:24px}.hero__subtitle{font-size:1.05rem;color:#ffffffd9;line-height:1.4;max-width:420px;margin-bottom:32px}.hero__badge{display:inline-block;transition:opacity .2s}.hero__badge:hover{opacity:1}.hero__badge img{height:62px;width:auto}.hero__image{display:flex;justify-content:center;align-items:flex-end;position:relative;z-index:2;margin-top:0;margin-bottom:-120px}.hero__phone{width:100%;max-width:470px;height:auto;filter:drop-shadow(20px 20px 30px rgba(0,0,0,.5))}.modes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.mode-card{text-align:center}.mode-card__image{margin:0 auto;max-width:286px}.mode-card__image img{width:100%;filter:drop-shadow(0 8px 24px rgba(0,0,0,.1))}.mode-card__badge{display:inline-block;font-size:.9rem;font-weight:700;letter-spacing:.05em;padding:6px 18px;border-radius:100px;margin-bottom:12px}.mode-card__badge--free{background:#d4edda;color:#1a7a3a}.mode-card__badge--pro{background:#e8e0f3;color:#5b3a8c}.mode-card__title{font-size:2rem;font-weight:700;margin-bottom:12px}.mode-card__desc{font-size:1rem;color:var(--color-text-muted);line-height:1.6;max-width:300px;margin:0 auto}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:32px;max-width:800px;margin:0 auto}.comparison__card{background:var(--color-bg-alt);border-radius:16px;padding:32px;border:1px solid var(--color-border)}.comparison__card-title{font-size:1.1rem;font-weight:700;margin-bottom:20px}.comparison__list{display:flex;flex-direction:column;gap:14px}.comparison__item{display:flex;align-items:flex-start;gap:10px;font-size:.925rem;line-height:1.5;color:var(--color-text-muted)}.comparison__icon{flex-shrink:0;width:22px;height:22px;margin-top:1px}.uses-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.use-card{background:#ffffffb3;border:none;border-radius:16px;padding:28px}.use-card__title{font-size:1.3rem;font-weight:700;margin-bottom:8px}.use-card__desc{font-size:1rem;color:var(--color-text-muted);line-height:1.6}.features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:0 auto}.feature-card{background:#ffffffb3;border:none;border-radius:16px;padding:28px}.feature-card__title{font-size:1.3rem;font-weight:700;margin-bottom:8px}.feature-card__desc{font-size:1rem;color:var(--color-text-muted);line-height:1.6}.cta{text-align:center}.cta__icon{width:45px;height:45px;vertical-align:middle;margin-right:8px}.cta__title{font-size:3rem;font-weight:800;color:var(--color-text);display:inline-flex;align-items:center;justify-content:center;gap:10px;margin-bottom:16px}.cta__subtitle{font-size:1.05rem;color:var(--color-text-muted);max-width:480px;margin:0 auto 36px;line-height:1.6}.cta__badge{display:inline-flex;align-items:center;gap:12px;transition:opacity .2s}.cta__badge:hover{opacity:1}.cta__badge img{height:64px;width:auto}.prose{max-width:860px;margin:0 auto;padding-top:var(--header-height)}.prose h1{font-size:2.5rem;font-weight:800;margin-bottom:8px}.prose__meta{color:var(--color-text-muted);margin-bottom:32px}.prose h2{font-size:1.5rem;font-weight:700;margin-top:40px;margin-bottom:12px}.prose h3{font-size:1.15rem;font-weight:600;margin-top:24px;margin-bottom:8px}.prose p{line-height:1.7;margin-bottom:16px}.prose ul{list-style:disc;padding-left:24px;margin-bottom:16px}.prose li{line-height:1.7;margin-bottom:6px}.prose a{color:var(--color-text);text-decoration:underline}.faq-section-title{font-size:1.1rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);margin-top:40px;margin-bottom:16px}.faq-section-title:first-of-type{margin-top:32px}.faq-accordion{display:flex;flex-direction:column;gap:10px;margin-bottom:8px}.faq-accordion details{background:var(--color-bg-alt);border:1px solid var(--color-border);border-radius:16px;overflow:hidden}.faq-accordion summary{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;font-size:1.05rem;font-weight:600;cursor:pointer;list-style:none;user-select:none;line-height:1.4}.faq-accordion summary::-webkit-details-marker{display:none}.faq-accordion summary:after{content:"";flex-shrink:0;width:20px;height:20px;margin-left:16px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23555' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") center / contain no-repeat;transition:transform .2s ease}.faq-accordion details[open]>summary:after{transform:rotate(180deg)}.faq-accordion .faq-answer{padding:0 22px 18px;font-size:.975rem;line-height:1.7;color:var(--color-text-muted)}.faq-accordion .faq-answer p{margin-bottom:12px}.faq-accordion .faq-answer p:last-child{margin-bottom:0}.faq-accordion .faq-answer ul{list-style:disc;padding-left:22px;margin-bottom:12px}.faq-accordion .faq-answer li{margin-bottom:4px;line-height:1.6}.faq-accordion .faq-answer a{color:var(--color-text);text-decoration:underline}.footer{background:var(--color-bg-alt);padding:24px 0;border-top:1px solid var(--color-border)}.footer__inner{max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;font-size:.85rem;color:var(--color-text-light)}.footer__links{display:flex;gap:24px}.footer__links a:hover{color:var(--color-text)}.footer__lang{display:flex;flex-wrap:wrap;gap:8px 16px}.footer__lang-item{font-size:.8rem;color:var(--color-text-light);transition:color .2s}a.footer__lang-item:hover{color:var(--color-text)}.footer__lang-item--active{font-weight:600;color:var(--color-text)}@media(max-width:768px){.section{padding:40px 0}.section__label{font-size:1rem}.section__title{font-size:2rem}.section__subtitle{font-size:1.1rem;line-height:1.6rem;margin-bottom:36px}.header__nav{display:none;position:absolute;top:var(--header-height);left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--color-border);padding:16px 24px;gap:16px}.header__nav.is-open{display:flex}.header__cta{display:inline-block;font-size:.8rem;padding:5px 16px}.header__cta--mobile{display:block;text-align:center;padding:10px 20px;border:2px solid var(--color-text);border-radius:24px;font-weight:600;font-size:.875rem}.header__menu-btn{display:none}.hero{overflow:hidden}.hero__inner{grid-template-columns:1fr;padding:80px 24px 40px;text-align:center;align-items:center}.hero__title{font-size:2.5rem}.hero__subtitle{max-width:100%;margin-left:auto;margin-right:auto}.hero__badge{margin:0 auto}.hero__badge img{height:62px}.hero__image{order:-1;margin-bottom:0}.hero__phone{max-width:320px}.modes-grid{grid-template-columns:1fr;gap:40px}.comparison,.uses-grid,.features-grid{grid-template-columns:1fr}.cta__title{font-size:2rem}.footer__inner{flex-direction:column;gap:12px;text-align:center}.footer__lang{justify-content:center}}.learn-breadcrumb{display:flex;align-items:center;gap:8px;font-size:.875rem;color:var(--color-text-light);margin-bottom:24px;flex-wrap:wrap}.learn-breadcrumb a{color:var(--color-text-muted);text-decoration:underline;text-underline-offset:2px}.learn-breadcrumb a:hover{color:var(--color-text)}.learn-breadcrumb__sep{color:var(--color-border)}.learn-hub__hero{text-align:center;padding-bottom:0}.learn-hub__hero h1{font-size:3rem;font-weight:800;margin-bottom:16px;line-height:1.2}.learn-hub__hero p{font-size:1.15rem;color:var(--color-text-muted);max-width:640px;margin:0 auto;line-height:1.6}.learn-hub__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.learn-hub__card{display:flex;flex-direction:column;background:#ffffffb3;border:1px solid var(--color-border);border-radius:16px;padding:32px;transition:transform .2s,box-shadow .2s;text-decoration:none;color:inherit}.learn-hub__card:hover{transform:translateY(-4px);box-shadow:0 8px 24px #00000014}.learn-hub__card-icon{width:48px;height:48px;margin-bottom:16px}.learn-hub__card-number{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--color-label);margin-bottom:8px}.learn-hub__card-title{font-size:1.35rem;font-weight:700;margin-bottom:8px;line-height:1.3}.learn-hub__card-desc{font-size:.95rem;color:var(--color-text-muted);line-height:1.6;flex:1}.learn-hub__card-arrow{display:inline-flex;align-items:center;gap:6px;font-size:.875rem;font-weight:600;color:var(--color-text);margin-top:16px}.learn-hub__card-arrow:after{content:"→"}.learn-facts{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}.learn-fact{text-align:center;padding:24px 16px;background:#ffffffb3;border-radius:12px;border:1px solid var(--color-border)}.learn-fact__number{font-size:2rem;font-weight:800;color:var(--color-text);line-height:1;margin-bottom:4px}.learn-fact__label{font-size:.85rem;color:var(--color-text-muted)}.learn-article{padding-top:var(--header-height);max-width:860px;margin:0 auto}.learn-article__header{margin-bottom:40px}.learn-article__header h1{font-size:2.5rem;font-weight:800;line-height:1.2;margin-bottom:12px}.learn-article__meta{font-size:.9rem;color:var(--color-text-muted);display:flex;gap:16px;flex-wrap:wrap}.learn-toc{background:var(--color-bg-alt);border:1px solid var(--color-border);border-radius:12px;padding:24px;margin-bottom:40px}.learn-toc__title{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted);margin-bottom:12px}.learn-toc__list{list-style:none;display:flex;flex-direction:column;gap:8px}.learn-toc__list li{font-size:.925rem;line-height:1.4}.learn-toc__list a{color:var(--color-text-muted);text-decoration:underline;text-underline-offset:2px}.learn-toc__list a:hover{color:var(--color-text)}.learn-content h2{font-size:1.75rem;font-weight:700;margin-top:48px;margin-bottom:16px;line-height:1.3;scroll-margin-top:calc(var(--header-height) + 16px)}.learn-content h3{font-size:1.3rem;font-weight:600;margin-top:32px;margin-bottom:12px;line-height:1.4}.learn-content p{line-height:1.8;margin-bottom:18px;color:var(--color-text)}.learn-content ul,.learn-content ol{padding-left:24px;margin-bottom:18px}.learn-content ul{list-style:disc}.learn-content ol{list-style:decimal}.learn-content li{line-height:1.7;margin-bottom:8px}.learn-content a{color:var(--color-text);text-decoration:underline;text-underline-offset:3px}.learn-content a:hover{color:var(--color-text-muted)}.learn-content strong{font-weight:600}.learn-callout{border-radius:12px;padding:20px 24px;margin:28px 0;border-left:4px solid}.learn-callout__title{font-size:.875rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}.learn-callout p{margin-bottom:8px;line-height:1.7}.learn-callout p:last-child{margin-bottom:0}.learn-callout--tip{background:#f0faf0;border-color:#2ecc71}.learn-callout--tip .learn-callout__title{color:#1a7a3a}.learn-callout--info{background:#eef6ff;border-color:#3498db}.learn-callout--info .learn-callout__title{color:#1a5276}.learn-callout--warning{background:#fef9e7;border-color:#f39c12}.learn-callout--warning .learn-callout__title{color:#7d6608}.learn-callout--fun{background:#faf0fa;border-color:#9b59b6}.learn-callout--fun .learn-callout__title{color:#6c3483}.learn-key-point{background:var(--color-bg-alt);border:2px solid var(--color-border);border-radius:12px;padding:24px;margin:28px 0;text-align:center;font-size:1.1rem;font-weight:500;line-height:1.6}.learn-figure{margin:32px 0;text-align:center}.learn-figure svg{max-width:100%;height:auto}.learn-figure__img--full{width:100%;height:auto;border-radius:12px;box-shadow:0 4px 20px #0000001a}@media(max-width:768px){.learn-figure__img--full{border-radius:8px}}.learn-figure__caption{font-size:.85rem;color:var(--color-text-muted);margin-top:12px;font-style:italic}.learn-callout--tip:has(.learn-callout__app-icon){display:flex;gap:20px;align-items:flex-start}.learn-callout__app-icon{flex-shrink:0;align-self:center}.learn-callout__app-icon img{width:48px;height:48px;border-radius:22%;display:block}.learn-callout--tip:has(.learn-callout__app-icon) .learn-callout__body{flex:1;min-width:0}.learn-interactive{background:#fff;border:1px solid var(--color-border);border-radius:16px;padding:32px;margin:32px 0}.learn-interactive__title{font-size:1.1rem;font-weight:700;margin-bottom:20px;display:flex;align-items:center;gap:8px}.learn-interactive__badge{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:3px 10px;border-radius:100px;background:#e8e0f3;color:#5b3a8c}.learn-converter{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:end}.learn-converter__field{display:flex;flex-direction:column;gap:6px}.learn-converter__label{font-size:.8rem;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.learn-converter__input{font-family:Noto Sans,system-ui,sans-serif;font-size:1.5rem;font-weight:700;padding:12px 16px;border:2px solid var(--color-border);border-radius:10px;background:var(--color-bg);color:var(--color-text);width:100%;outline:none;transition:border-color .2s}.learn-converter__input:focus{border-color:var(--color-text)}.learn-converter__select{font-family:Noto Sans,system-ui,sans-serif;font-size:.9rem;padding:8px 12px;border:1px solid var(--color-border);border-radius:8px;background:#fff;color:var(--color-text);margin-top:4px;width:100%}.learn-converter__arrow{font-size:1.5rem;color:var(--color-text-muted);padding-bottom:16px}.learn-converter__results{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;margin-top:20px}.learn-converter__result{background:var(--color-bg);border-radius:8px;padding:12px 16px}.learn-converter__result-value{font-size:1.2rem;font-weight:700;color:var(--color-text)}.learn-converter__result-unit{font-size:.8rem;color:var(--color-text-muted)}.learn-chart__bars{display:flex;flex-direction:column;gap:12px}.learn-chart__bar-row{display:grid;grid-template-columns:150px 1fr 100px;gap:12px;align-items:center;cursor:default}.learn-chart__bar-row:hover .learn-chart__bar-fill{filter:brightness(1.1)}.learn-chart__bar-label{font-size:.85rem;font-weight:500;text-align:right}.learn-chart__bar-track{height:28px;background:var(--color-bg);border-radius:6px;overflow:hidden;position:relative}.learn-chart__bar-fill{height:100%;border-radius:6px;transition:width 1s cubic-bezier(.25,.46,.45,.94);min-width:2px}.learn-chart__bar-value{font-size:.8rem;font-weight:600;color:var(--color-text-muted)}.learn-timeline{position:relative;padding-left:32px}.learn-timeline:before{content:"";position:absolute;left:7px;top:0;bottom:0;width:2px;background:var(--color-border)}.learn-timeline__item{position:relative;margin-bottom:32px;padding-bottom:8px}.learn-timeline__dot{position:absolute;left:-32px;top:4px;width:16px;height:16px;border-radius:50%;background:var(--color-text);border:3px solid var(--color-bg)}.learn-timeline__year{font-size:.85rem;font-weight:700;color:var(--color-label);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px}.learn-timeline__title{font-size:1.15rem;font-weight:700;margin-bottom:6px}.learn-timeline__desc{font-size:.925rem;color:var(--color-text-muted);line-height:1.6}.learn-table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--color-border);border-radius:12px}.learn-table{width:100%;border-collapse:collapse;font-size:.9rem}.learn-table th{background:var(--color-bg-alt);font-weight:700;text-align:left;padding:14px 16px;border-bottom:2px solid var(--color-border);white-space:nowrap}.learn-table td{padding:12px 16px;border-bottom:1px solid var(--color-border);vertical-align:top}.learn-table tr:last-child td{border-bottom:none}.learn-table tr:hover td{background:#00000005}.learn-tabs__nav{display:flex;gap:4px;border-bottom:2px solid var(--color-border);margin-bottom:24px;overflow-x:auto}.learn-tab-btn{font-family:Noto Sans,system-ui,sans-serif;font-size:.9rem;font-weight:600;padding:10px 20px;background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-2px;cursor:pointer;color:var(--color-text-muted);white-space:nowrap;transition:color .2s,border-color .2s}.learn-tab-btn:hover{color:var(--color-text)}.learn-tab-btn.is-active{color:var(--color-text);border-bottom-color:var(--color-text)}.learn-tab-panel{display:none}.learn-tab-panel.is-active{display:block}.learn-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:56px;padding-top:32px;border-top:1px solid var(--color-border)}.learn-nav__link{display:flex;flex-direction:column;gap:4px;padding:20px;background:var(--color-bg-alt);border:1px solid var(--color-border);border-radius:12px;transition:transform .2s,box-shadow .2s;text-decoration:none;color:inherit}.learn-nav__link:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000000f}.learn-nav__link--next{text-align:right}.learn-nav__dir{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--color-label)}.learn-nav__title{font-size:1rem;font-weight:600}@media(max-width:768px){.learn-hub__hero h1{font-size:2rem}.learn-hub__grid{grid-template-columns:1fr}.learn-facts{grid-template-columns:repeat(2,1fr);gap:12px}.learn-article__header h1{font-size:1.75rem}.learn-converter{grid-template-columns:1fr}.learn-converter__arrow{text-align:center;padding:0;transform:rotate(90deg)}.learn-chart__bar-row{grid-template-columns:100px 1fr 80px;gap:8px}.learn-chart__bar-label{font-size:.75rem}.learn-nav{grid-template-columns:1fr}.learn-nav__link--next{text-align:left}.learn-table{font-size:.8rem}.learn-table th,.learn-table td{padding:10px 12px}.learn-tabs__nav{gap:0}.learn-tab-btn{padding:8px 14px;font-size:.8rem}}@media(min-width:769px)and (max-width:1024px){.hero__title{font-size:3rem}.modes-grid{gap:24px}.mode-card__image{max-width:242px}.uses-grid{grid-template-columns:repeat(2,1fr)}}