:root {
    --primary-color: #E83E8C;
    --primary-dark: #d62f7b;
    --primary-light: rgba(232, 62, 140, 0.08);
    --text-primary: #000000;
    --text-secondary: #444444;
    --text-light: #666666;
    --chrome-bg: #ECE9E9;
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.08);
    --gradient-primary: linear-gradient(135deg, #E83E8C 0%, #d62f7b 100%);
    --font-sans: "Open Sans", Helvetica, Arial, sans-serif;
    --fw-light: 300;
    --fw-normal: 400;
    --fw-bold: 700;
    --fs-h1: 24px;
    --lh-h1: 30px;
    --fs-h2: 20px;
    --lh-h2: 24px;
    --fs-h3: 18px;
    --lh-h3: 22px;
    --fs-h4: 16px;
    --lh-h4: 20px;
    --fs-h5: 14px;
    --lh-h5: 18px;
    --fs-body: 14px;
    --lh-body: 20px;
    --fs-small: 12px;
    --lh-small: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    font-size: var(--fs-body);
    font-weight: var(--fw-normal);
    line-height: var(--lh-body);
    color: var(--text-primary);
    background: #f7f5f8;
    min-height: 100vh;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.docc-d { color: var(--primary-color); }

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--chrome-bg);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.header .container {
    max-width: none;
    width: 100%;
    margin: 0;
    padding: 0 1.25rem;
}
.nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    height: 52px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    height: 32px;
    font-size: var(--fs-h4);
    font-weight: var(--fw-bold);
    color: var(--text-primary);
    text-decoration: none;
}
.logo-mark {
    width: 28px;
    height: 28px;
    display: block;
    flex-shrink: 0;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 0.1rem;
    list-style: none;
    height: 32px;
    margin: 0;
    padding: 0;
}
.nav-links > li { display: flex; align-items: center; height: 32px; }
.nav-links > li > a,
.menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    padding: 0 0.7rem;
    border: none;
    border-radius: 4px;
    background: none;
    color: var(--text-primary);
    text-decoration: none;
    font-family: inherit;
    font-size: var(--fs-h5);
    cursor: pointer;
    white-space: nowrap;
}
.nav-links > li > a:hover,
.menu-toggle:hover,
.has-menu.open .menu-toggle { background: var(--primary-light); }
.has-menu { position: relative; }
.menu-toggle { gap: 0.35rem; }
.menu-toggle i { font-size: 0.58rem; }
.dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 0.4rem);
    left: 0;
    min-width: 220px;
    padding: 0.45rem;
    list-style: none;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 1200;
}
.has-menu:hover .dropdown,
.has-menu:focus-within .dropdown,
.has-menu.open .dropdown { display: block; }
.dropdown a {
    display: block;
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--fs-h5);
}
.dropdown a:hover { background: var(--primary-light); }
.nav-actions { margin-left: auto; display: flex; align-items: center; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.85rem 1.4rem;
    border-radius: 999px;
    font-weight: var(--fw-bold);
    font-size: var(--fs-h5);
    text-decoration: none;
    border: 1.5px solid transparent;
    cursor: pointer;
}
.btn.primary { background: var(--gradient-primary); color: #fff; }
.btn.ghost {
    background: #fff;
    color: var(--text-primary);
    border-color: rgba(0,0,0,0.18);
}
.btn.ghost:hover { border-color: var(--primary-color); background: var(--primary-light); }
.btn.compact { height: 32px; padding: 0 0.9rem; font-size: var(--fs-small); }

.topic { padding: 2rem 0 4rem; }
.topic-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 2.5rem;
    align-items: start;
}
.crumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
    font-size: var(--fs-small);
    color: var(--text-light);
    margin-bottom: 1.1rem;
}
.crumbs a { color: var(--text-secondary); text-decoration: none; }
.crumbs a:hover { color: var(--primary-color); }
.crumbs span[aria-hidden] { color: #bbb; }
.kicker {
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}
.topic h1 {
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.15;
    font-weight: var(--fw-bold);
    margin-bottom: 0.75rem;
}
.lead {
    font-size: var(--fs-h2);
    line-height: var(--lh-h2);
    font-weight: var(--fw-light);
    color: var(--text-secondary);
    max-width: 40rem;
    margin-bottom: 1.4rem;
}
.mode-switch {
    display: inline-flex;
    padding: 0.25rem;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    gap: 0.2rem;
    margin-bottom: 2rem;
}
.mode-switch a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.95rem;
    border-radius: 999px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: var(--fs-h5);
    font-weight: var(--fw-bold);
}
.mode-switch a:hover { background: var(--primary-light); color: #000; }
.mode-switch a.is-current {
    background: var(--gradient-primary);
    color: #fff;
}
.mode-switch a.is-current i { color: #fff; }
.mode-switch i { color: var(--primary-color); }

.howto { list-style: none; display: grid; gap: 1rem; }
.howto-item {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem 1.35rem;
}
.howto-item header {
    display: flex;
    gap: 0.85rem;
    align-items: flex-start;
    margin-bottom: 0.55rem;
}
.step-num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary-color);
    display: grid;
    place-items: center;
    font-size: var(--fs-small);
    font-weight: var(--fw-bold);
}
.howto-item h2 {
    font-size: var(--fs-h3);
    line-height: var(--lh-h3);
    font-weight: var(--fw-bold);
}
.howto-item p { color: var(--text-secondary); }
.placeholder {
    margin-top: 0.7rem;
    padding: 0.75rem 0.9rem;
    border-radius: 10px;
    background: #fafafa;
    border: 1px dashed rgba(0,0,0,0.12);
    color: var(--text-light);
    font-size: var(--fs-small);
}

.choice-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}
.choice-card {
    display: block;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 1.6rem;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-sm);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.choice-card:hover {
    transform: translateY(-4px);
    border-color: rgba(232, 62, 140, 0.28);
    box-shadow: 0 10px 28px rgba(232, 62, 140, 0.10);
}
.choice-card i { color: var(--primary-color); font-size: 1.35rem; margin-bottom: 0.7rem; display: block; }
.choice-card h2 { font-size: var(--fs-h3); margin-bottom: 0.4rem; }
.choice-card p { color: var(--text-secondary); margin-bottom: 0.9rem; }
.choice-card .text-link { color: var(--primary-color); font-weight: var(--fw-bold); font-size: var(--fs-h5); }

.side {
    position: sticky;
    top: 72px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.1rem 1.15rem;
}
.side h2 {
    font-size: var(--fs-small);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 0.7rem;
}
.side ul { list-style: none; }
.side li { margin-bottom: 0.45rem; }
.side a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--fs-h5);
}
.side a:hover { color: var(--primary-color); }
.side .cta {
    margin-top: 1.1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    display: grid;
    gap: 0.5rem;
}

.page-cta {
    margin-top: 2.2rem;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 20px;
    padding: 1.6rem;
}
.page-cta h2 { font-size: var(--fs-h2); margin-bottom: 0.4rem; }
.page-cta p { opacity: 0.95; margin-bottom: 1rem; }
.page-cta .actions { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.btn.light { background: #fff; color: var(--primary-color); }
.btn.outline { background: transparent; color: #fff; border-color: #fff; }

.footer {
    background: var(--chrome-bg);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    padding: 2.2rem 0 1.2rem;
    margin-top: 2rem;
}
.footer-mini {
    display: flex;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-size: var(--fs-small);
    color: var(--text-light);
}
.footer-mini a { color: var(--text-secondary); text-decoration: none; margin-right: 0.9rem; }
.footer-mini a:hover { color: var(--primary-color); }

@media (max-width: 900px) {
    .topic-grid,
    .choice-grid { grid-template-columns: 1fr; }
    .side { position: static; }
    .nav-links { display: none; }
}
*:focus { outline: 2px solid var(--primary-color); outline-offset: 2px; }