*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --canvas:          #f7f7f4;
    --canvas-soft:     #fafaf7;
    --surface-card:    #ffffff;
    --surface-strong:  #e6e5e0;
    --hairline:        #e6e5e0;
    --hairline-soft:   #efeee8;
    --hairline-strong: #cfcdc4;
    --ink:             #26251e;
    --body:            #5a5852;
    --muted:           #807d72;
    --muted-soft:      #a09c92;
    --primary:         #f54e00;
    --primary-active:  #d04200;
    --on-primary:      #ffffff;
    --success:         #1f8a65;
    --error:           #cf2d56;
    --font-sans:       'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-mono:       'JetBrains Mono', 'Courier New', monospace;
    --radius-xs:   4px;
    --radius-sm:   6px;
    --radius-md:   8px;
    --radius-lg:   12px;
    --radius-xl:   16px;
    --radius-pill: 9999px;
}

html { scroll-behavior: smooth; }

body {
    background: var(--canvas);
    color: var(--body);
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.zl-skip-link {
    position: absolute;
    top: -999px;
    left: 0;
    background: var(--primary);
    color: var(--on-primary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    z-index: 9999;
    font-size: 14px;
    text-decoration: none;
}
.zl-skip-link:focus { top: 8px; left: 8px; }

.zl-container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}

a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--hairline-strong); text-underline-offset: 3px; }
a:hover { color: var(--primary); text-decoration-color: var(--primary); }
img { display: block; max-width: 100%; height: auto; }
ul, ol { list-style: none; }

.zl-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    height: 64px;
}
.zl-nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 24px;
}
.zl-nav__brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    text-decoration: none;
    letter-spacing: -0.3px;
    white-space: nowrap;
}
.zl-nav__brand span { color: var(--primary); }
.zl-nav__menu {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    justify-content: flex-end;
}
.zl-nav__menu li a {
    font-size: 14px;
    font-weight: 500;
    color: var(--muted);
    text-decoration: none;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    transition: color 0.15s, background 0.15s;
}
.zl-nav__menu li a:hover,
.zl-nav__menu li a[aria-current="page"] { color: var(--ink); background: var(--surface-strong); }
.zl-nav__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-md);
}
.zl-nav__toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

.zl-hero {
    padding: 80px 0 64px;
    border-bottom: 1px solid var(--hairline);
}
.zl-hero__label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    background: var(--surface-strong);
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    margin-bottom: 24px;
}
.zl-hero__headline {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--ink);
    max-width: 760px;
    margin-bottom: 20px;
}
.zl-hero__sub {
    font-size: 18px;
    color: var(--body);
    max-width: 560px;
    margin-bottom: 40px;
    line-height: 1.6;
}
.zl-hero__img {
    margin-top: 56px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--hairline);
    overflow: hidden;
    max-height: 480px;
    object-fit: cover;
    width: 100%;
}

.zl-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-md);
    padding: 10px 18px;
    height: 40px;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
}
.zl-btn--primary { background: var(--primary); color: var(--on-primary); }
.zl-btn--primary:hover { background: var(--primary-active); color: var(--on-primary); }
.zl-btn--secondary { background: var(--surface-card); color: var(--ink); border: 1px solid var(--hairline-strong); }
.zl-btn--secondary:hover { background: var(--canvas-soft); }
.zl-btn--ink { background: var(--ink); color: var(--canvas); padding: 12px 20px; height: 44px; }
.zl-btn--ink:hover { background: #3a3830; color: var(--canvas); }

.zl-section { padding: 80px 0; }
.zl-section--soft { background: var(--canvas-soft); }
.zl-section__label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
}
.zl-section__heading {
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 16px;
}
.zl-section__sub {
    font-size: 16px;
    color: var(--body);
    max-width: 600px;
    line-height: 1.6;
    margin-bottom: 48px;
}

.zl-card-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(3, 1fr);
}
.zl-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.15s;
    display: flex;
    flex-direction: column;
}
.zl-card:hover { border-color: var(--hairline-strong); }
.zl-card__img { width: 100%; height: 200px; object-fit: cover; display: block; }
.zl-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.zl-card__tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
}
.zl-card__title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.35;
    margin-bottom: 12px;
}
.zl-card__excerpt { font-size: 14px; color: var(--body); line-height: 1.6; flex: 1; }
.zl-card__date { font-size: 13px; color: var(--muted-soft); margin-top: 16px; }

.zl-features { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); margin-top: 48px; }
.zl-feature {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 24px;
}
.zl-feature__icon { font-size: 28px; margin-bottom: 12px; }
.zl-feature__title { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.zl-feature__text { font-size: 14px; color: var(--body); line-height: 1.6; }

.zl-article-hero { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }
.zl-article-hero__back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--muted);
    text-decoration: none;
    margin-bottom: 32px;
}
.zl-article-hero__back:hover { color: var(--ink); }
.zl-article-hero__cat {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 16px;
}
.zl-article-hero__title {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    line-height: 1.15;
    margin-bottom: 20px;
    max-width: 800px;
}
.zl-article-hero__meta { font-size: 14px; color: var(--muted); }
.zl-article-hero__img {
    margin-top: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--hairline);
    width: 100%;
    max-height: 460px;
    object-fit: cover;
}

.zl-article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 64px;
    padding: 64px 0;
}
.zl-article-content { min-width: 0; }
.zl-article-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: 48px 0 16px;
    line-height: 1.25;
}
.zl-article-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: 32px 0 12px;
    line-height: 1.3;
}
.zl-article-content p { margin-bottom: 20px; font-size: 16px; line-height: 1.7; color: var(--body); }
.zl-article-content ul, .zl-article-content ol {
    margin: 0 0 20px 20px;
    list-style: disc;
}
.zl-article-content ol { list-style: decimal; }
.zl-article-content li { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 6px; }
.zl-article-content a { color: var(--primary); }
.zl-article-content strong { color: var(--ink); font-weight: 600; }
.zl-article-content blockquote {
    border-left: 3px solid var(--primary);
    padding: 16px 20px;
    margin: 32px 0;
    background: var(--canvas-soft);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.zl-article-content blockquote p { color: var(--ink); font-size: 17px; margin: 0; }
.zl-article-content .zl-callout {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin: 32px 0;
}
.zl-article-content .zl-callout__title { font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.zl-article-content .zl-callout p { margin: 0; font-size: 14px; color: var(--body); }
.zl-article-content .zl-img-block { margin: 40px 0; }
.zl-article-content .zl-img-block img { border-radius: var(--radius-lg); border: 1px solid var(--hairline); }
.zl-article-content .zl-img-block figcaption { font-size: 13px; color: var(--muted); margin-top: 8px; }

.zl-sidebar { min-width: 0; }
.zl-sidebar__widget {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}
.zl-sidebar__heading { font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.5px; }
.zl-sidebar__links { display: flex; flex-direction: column; gap: 10px; }
.zl-sidebar__links a { font-size: 14px; color: var(--body); text-decoration: none; line-height: 1.4; }
.zl-sidebar__links a:hover { color: var(--primary); }
.zl-sidebar__updated { font-size: 13px; color: var(--muted); }

.zl-form-section { padding: 80px 0; background: var(--canvas-soft); border-top: 1px solid var(--hairline); }
.zl-form {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 600px;
}
.zl-form__title { font-size: 26px; font-weight: 400; letter-spacing: -0.325px; color: var(--ink); margin-bottom: 8px; }
.zl-form__sub { font-size: 14px; color: var(--muted); margin-bottom: 32px; }
.zl-form__group { margin-bottom: 20px; }
.zl-form__label { display: block; font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 6px; }
.zl-form__input, .zl-form__textarea {
    display: block;
    width: 100%;
    background: var(--surface-card);
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    height: 44px;
    font-family: var(--font-sans);
    font-size: 16px;
    transition: border-color 0.15s;
    outline: none;
}
.zl-form__textarea { height: auto; min-height: 100px; resize: vertical; }
.zl-form__input:focus, .zl-form__textarea:focus { border-color: var(--ink); }
.zl-form__input::placeholder, .zl-form__textarea::placeholder { color: var(--muted-soft); }
.zl-form__msg { display: none; margin-top: 16px; padding: 12px 16px; border-radius: var(--radius-md); font-size: 14px; }
.zl-form__msg--success { background: #e8f5f0; color: var(--success); border: 1px solid #b3ddd0; display: block; }
.zl-form__msg--error { background: #fdedf0; color: var(--error); border: 1px solid #f5b8c4; display: block; }
.zl-form__spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; margin-right: 8px; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }

.zl-page-hero { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }
.zl-page-hero__heading { font-size: clamp(32px, 4vw, 48px); font-weight: 400; letter-spacing: -1px; color: var(--ink); margin-bottom: 16px; }
.zl-page-hero__sub { font-size: 16px; color: var(--body); max-width: 600px; line-height: 1.6; }

.zl-prose { max-width: 780px; padding: 64px 0; }
.zl-prose h2 { font-size: 24px; font-weight: 400; color: var(--ink); margin: 40px 0 14px; letter-spacing: -0.3px; }
.zl-prose h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin: 28px 0 10px; }
.zl-prose p { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 18px; }
.zl-prose ul, .zl-prose ol { margin: 0 0 18px 20px; }
.zl-prose ul { list-style: disc; }
.zl-prose ol { list-style: decimal; }
.zl-prose li { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 6px; }
.zl-prose a { color: var(--primary); }
.zl-prose strong { color: var(--ink); font-weight: 600; }
.zl-updated { font-size: 13px; color: var(--muted-soft); margin-top: -8px; margin-bottom: 40px; }

.zl-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px 0 0;
}
.zl-footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
}
.zl-footer__brand { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.zl-footer__brand span { color: var(--primary); }
.zl-footer__tagline { font-size: 14px; color: var(--muted); line-height: 1.6; }
.zl-footer__heading { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--ink); margin-bottom: 12px; }
.zl-footer__col ul { display: flex; flex-direction: column; gap: 8px; }
.zl-footer__col ul li a { font-size: 14px; color: var(--body); text-decoration: none; }
.zl-footer__col ul li a:hover { color: var(--ink); }
.zl-footer__col ul li { font-size: 14px; color: var(--body); }
.zl-footer__bottom {
    border-top: 1px solid var(--hairline);
    padding: 20px 0;
}
.zl-footer__bottom .zl-container { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.zl-footer__bottom p { font-size: 13px; color: var(--muted-soft); }

.zl-cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
    max-width: 640px;
    width: calc(100% - 48px);
    background: var(--ink);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    display: none;
}
.zl-cookie-banner.is-visible { display: block; }
.zl-cookie-banner__inner { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.zl-cookie-banner p { font-size: 14px; color: var(--canvas); flex: 1; line-height: 1.5; }
.zl-cookie-banner p a { color: var(--primary); }
.zl-cookie-banner__actions { display: flex; gap: 8px; }

@media (max-width: 1024px) {
    .zl-card-grid { grid-template-columns: repeat(2, 1fr); }
    .zl-features { grid-template-columns: repeat(2, 1fr); }
    .zl-footer__inner { grid-template-columns: repeat(2, 1fr); }
    .zl-article-layout { grid-template-columns: 1fr; gap: 40px; }
    .zl-sidebar { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .zl-sidebar__widget { margin-bottom: 0; }
}

@media (max-width: 768px) {
    .zl-nav__toggle { display: flex; }
    .zl-nav__menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        flex-direction: column;
        padding: 12px 16px 16px;
        gap: 2px;
    }
    .zl-nav__menu.is-open { display: flex; }
    .zl-nav__menu li a { display: block; padding: 10px 12px; width: 100%; }
    .zl-card-grid { grid-template-columns: 1fr; }
    .zl-features { grid-template-columns: 1fr; }
    .zl-footer__inner { grid-template-columns: 1fr 1fr; }
    .zl-sidebar { grid-template-columns: 1fr; }
    .zl-form { padding: 24px; }
}

@media (max-width: 480px) {
    .zl-footer__inner { grid-template-columns: 1fr; }
    .zl-footer__bottom .zl-container { flex-direction: column; align-items: flex-start; }
}