@charset "UTF-8";

:root { color-scheme: light; --bg: #f8f9f5; --surface: #fffefa; --sidebar: #f1f3eb; --text: #283b30; --muted: #767f73; --faint: #8c9487; --line: #e4e8de; --accent: #345b43; --active: #e2e9d9; --hover: #edf0e6; --green-art: #edf1e2; --tan-art: #f5eadd; --learn-icon: #eef2e6; --tracker-icon: #f7ebdf; --tracker-accent: #97694b; --shadow: 0 12px 32px #2d422a08; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; font-synthesis: none; }
:root[data-theme="dark"] { color-scheme: dark; --bg: #171e19; --surface: #1e2821; --sidebar: #1b231c; --text: #e1e7d9; --muted: #a1ad9b; --faint: #8e9c88; --line: #344033; --accent: #b9d29e; --active: #33432d; --hover: #2b372b; --green-art: #34432e; --tan-art: #483d30; --learn-icon: #33452e; --tracker-icon: #4a3b2e; --tracker-accent: #dbb08a; --shadow: 0 12px 32px #00000020; }
* { box-sizing: border-box; }
body { margin: 0; color: var(--text); background: var(--bg); font-size: 14px; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; cursor: pointer; }
button, a { -webkit-tap-highlight-color: transparent; }
button { border: 0; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
::selection { color: var(--text); background: var(--active); }
.icon { display: inline-block; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.icon-definitions { position: absolute; width: 0; height: 0; overflow: hidden; }
.skip-link { position: fixed; top: -80px; left: 20px; padding: 14px; background: var(--surface); z-index: 100; border-radius: 8px; }
.skip-link:focus { top: 14px; }
.sidebar { position: fixed; inset: 0 auto 0 0; display: flex; flex-direction: column; width: 228px; background: var(--sidebar); border-right: 1px solid var(--line); z-index: 5; padding: 36px 20px 22px; }
.brand { display: flex; gap: 12px; align-items: center; width: fit-content; margin: 0 12px; }
.brand > span { display: block; font-size: 32px; font-weight: 650; line-height: .95; letter-spacing: -1.7px; }
.brand-dot { color: #839372; }
.brand small { display: block; font-size: 8px; line-height: 1; letter-spacing: 2.2px; margin: 9px 0 0 1px; color: var(--muted); font-weight: 550; }
.sidebar-body { flex: 1; display: flex; flex-direction: column; }
.nav-label { font-size: 10px; color: var(--muted); margin: 58px 14px 18px; letter-spacing: 1.1px; }
.nav-label span { font-size: 8px; margin-left: 8px; letter-spacing: 1.3px; opacity: .7; }
.navigation { display: grid; gap: 8px; }
.nav-item { display: flex; align-items: center; gap: 12px; height: 46px; padding: 0 14px; border-radius: 8px; color: var(--muted); font-size: 13px; transition: background .2s, color .2s; }
.nav-item:hover { color: var(--text); background: var(--hover); }
.nav-item.active { color: var(--accent); background: var(--active); font-weight: 550; }
.nav-item .icon { width: 18px; height: 18px; }
.active-dot { width: 5px; height: 5px; background: var(--accent); margin-left: auto; border-radius: 50%; }
.page { margin-left: 228px; }
.topbar { height: 76px; padding: 0 48px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; }
.breadcrumb { display: flex; align-items: center; gap: 13px; color: var(--muted); font-size: 11px; }
.breadcrumb > .icon { width: 16px; height: 16px; }
.breadcrumb .chevron { width: 10px; height: 10px; opacity: .55; }
.breadcrumb strong { color: var(--text); font-weight: 500; }
.header-actions { display: flex; align-items: center; gap: 18px; }
.today { color: var(--muted); font-size: 11px; letter-spacing: .2px; }
.header-divider { height: 16px; width: 1px; background: var(--line); }
.icon-button { width: 34px; height: 34px; padding: 0; display: grid; place-items: center; background: transparent; color: var(--muted); border-radius: 8px; transition: background .2s; }
.icon-button:hover { background: var(--hover); color: var(--text); }
.icon-button .icon { width: 18px; height: 18px; }
.theme-sun, [data-theme="dark"] .theme-moon { display: none; }
[data-theme="dark"] .theme-sun { display: block; }
.content { max-width: 1216px; margin: 0 auto; padding: 40px 48px 48px; }
.content:focus { outline: none; }
.section-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 17px; }
.section-heading h1 { font-weight: 500; font-size: 13px; letter-spacing: .2px; margin: 0; }
.section-heading h1 span { font-size: 8px; color: var(--faint); letter-spacing: 1.7px; margin-left: 12px; font-weight: 400; }
.tool-count { font-size: 10px; color: var(--muted); border: 1px solid var(--line); padding: 5px 9px; border-radius: 5px; }
.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.tool-card { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: 13px; overflow: hidden; box-shadow: 0 3px 6px #2d422a02; transition: transform .25s, box-shadow .25s, border-color .25s; }
.tool-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #a9b89c; }
.tracker-card:hover { border-color: #c8a78a; }
.card-art { position: relative; height: 202px; overflow: hidden; border-bottom: 1px solid var(--line); }
.learn-art { background: var(--green-art); }
.tracker-art { background: var(--tan-art); }
.art-label, .art-number { position: absolute; top: 20px; font-size: 8px; letter-spacing: 1.5px; z-index: 1; }
.art-label { left: 24px; color: #667756; }
.tracker-art .art-label { color: #9b785c; }
.art-number { right: 22px; color: #7d8d70; font-family: Georgia, serif; letter-spacing: .5px; font-size: 11px; font-style: italic; }
.tracker-art .art-number { color: #a28268; }
.card-art > svg { position: absolute; width: 100%; height: 215px; left: 0; top: 2px; transition: transform .45s; }
.tool-card:hover .card-art > svg { transform: translateY(-3px) rotate(-1deg); }
.tool-card:hover .tracking-illustration { transform: translateY(-3px) rotate(1deg); }
[data-theme="dark"] .art-label, [data-theme="dark"] .art-number { color: #bfcead; }
[data-theme="dark"] .tracker-art .art-label, [data-theme="dark"] .tracker-art .art-number { color: #d8b999; }
.card-content { padding: 24px 27px 0; }
.card-title-row { display: flex; gap: 10px; align-items: center; }
.card-icon { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 8px; background: var(--learn-icon); color: var(--accent); }
.card-icon .icon { width: 16px; height: 16px; }
.tracker-card .card-icon { background: var(--tracker-icon); color: var(--tracker-accent); }
.card-category { font-size: 7px; letter-spacing: 1.4px; color: var(--muted); }
.card-name h2 { margin: 17px 0 10px; font-family: Georgia, "Times New Roman", serif; font-size: 33px; font-weight: 400; line-height: 1.1; letter-spacing: -1px; }
.card-name h2 > span { display: inline-block; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 12px; letter-spacing: .5px; color: var(--muted); margin-left: 12px; vertical-align: 4px; }
.card-content > p { margin: 12px 0 23px; color: var(--muted); font-size: 11px; line-height: 1.95; letter-spacing: .2px; }
.card-bottom { border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 0; }
.card-bottom > span:first-child { font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; font-size: 10px; color: var(--faint); }
.enter-link { display: flex; gap: 12px; align-items: center; font-size: 10px; color: var(--accent); font-weight: 500; }
.enter-arrow { display: grid; place-items: center; width: 26px; height: 26px; border: 1px solid var(--line); border-radius: 50%; transition: background .2s, color .2s; }
.enter-arrow .icon { width: 12px; height: 12px; }
.tool-card:hover .enter-arrow { background: var(--accent); border-color: var(--accent); color: var(--surface); }
.tracker-card .enter-link { color: var(--tracker-accent); }
.tracker-card:hover .enter-arrow { background: var(--tracker-accent); border-color: var(--tracker-accent); }
@media (min-width: 1600px) { .content { padding-top: 68px; }
.card-art { height: 242px; }
.card-art > svg { height: 252px; }
.card-content { padding-top: 28px; }
}
@media (max-width: 1180px) { .sidebar { width: 196px; padding-right: 16px; padding-left: 16px; }
.page { margin-left: 196px; }
.topbar { padding: 0 32px; }
.content { padding: 32px; }
.card-content { padding: 20px 22px 0; }
.card-category { letter-spacing: 1px; font-size: 6px; }
.tool-grid { gap: 18px; }
}
@media (max-width: 950px) { .sidebar { width: 80px; padding: 28px 14px 20px; }
.brand { margin: 0 auto; }
.brand > span, .nav-label, .nav-item > span, .active-dot { display: none; }
.navigation { margin-top: 54px; gap: 14px; }
.nav-item { justify-content: center; padding: 0; }
.page { margin-left: 80px; }
}
@media (max-width: 720px) { .sidebar { position: static; height: 72px; width: 100%; padding: 0 24px; flex-direction: row; align-items: center; border-right: 0; border-bottom: 1px solid var(--line); }
.brand { margin: 0; gap: 8px; }
.brand img { width: 30px; height: 30px; }
.brand > span { display: block; font-size: 26px; }
.brand small { display: none; }
.sidebar-body { flex: 0 1 auto; margin-left: auto; }
.navigation { margin: 0; display: flex; gap: 6px; }
.nav-item { width: 38px; height: 38px; }
.page { margin-left: 0; }
.topbar { padding: 0 24px; height: 53px; }
.breadcrumb { font-size: 10px; gap: 9px; }
.breadcrumb > .icon:first-child { display: none; }
.header-actions { gap: 9px; }
.today { font-size: 9px; }
.header-divider { display: none; }
.content { padding: 28px 24px 36px; }
.tool-grid { grid-template-columns: 1fr; gap: 20px; }
.card-art { height: 207px; }
.card-art > svg { height: 224px; }
.card-content { padding: 22px 24px 0; }
.card-category { font-size: 7px; letter-spacing: 1.5px; }
.card-name h2 { font-size: 34px; }
.card-content > p { font-size: 12px; margin-bottom: 21px; }
.card-bottom { padding: 17px 0; }
.card-bottom > span:first-child { font-size: 11px; }
.enter-link { font-size: 11px; }
}
@media (max-width: 370px) { .sidebar, .topbar { padding-left: 18px; padding-right: 18px; }
.content { padding-left: 18px; padding-right: 18px; }
.section-heading h1 span { margin-left: 6px; font-size: 7px; letter-spacing: 1px; }
.card-content { padding-left: 20px; padding-right: 20px; }
.header-actions { gap: 3px; }
.today { font-size: 8px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}