:root {
  /* Brand */
  --brand-primary: #98D98E;
  --brand-friendly: #E0EBAF;
  --brand-highlight: #A7B719;
  --brand-soft-active: #AAC48C;
  --brand-action: #96AB2B;
  --brand-muted: #9FAC77;

  /* Neutral */
  --color-charcoal-900: #1F1F1F;
  --color-charcoal-800: #2F2F2F;
  --color-gray-600: #6B6B6B;
  --color-gray-200: #E8E8E8;
  --color-surface-soft: #F8F8F5;
  --color-white: #FFFFFF;

  /* Semantic surfaces */
  --surface-page: var(--color-surface-soft);
  --surface-card: var(--color-white);
  --surface-brand-soft: var(--brand-primary);
  --surface-selected: var(--brand-primary);

  /* Semantic text */
  --text-primary: var(--color-charcoal-900);
  --text-secondary: var(--color-gray-600);
  --text-on-brand: var(--color-charcoal-900);
  --text-inverse: var(--color-white);

  /* Semantic border */
  --border-default: var(--color-gray-200);
  --border-brand: var(--brand-soft-active);
  --border-active: var(--brand-action);

  /* Semantic interaction */
  --action-primary-bg: var(--brand-action);
  --action-primary-text: var(--color-charcoal-900);
  --action-primary-hover: var(--brand-highlight);
  --action-primary-active: var(--brand-muted);
  --focus-ring: var(--brand-highlight);

  --shell: 1120px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --shadow-soft: 0 18px 50px rgb(31 31 31 / 0.06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--surface-page);
  color: var(--text-primary);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 4px; }
.shell { width: min(calc(100% - 40px), var(--shell)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgb(232 232 232 / .85);
  background: rgb(248 248 245 / .9);
  backdrop-filter: blur(14px);
}
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 14px 14px 14px 5px;
  background: var(--brand-primary);
  color: var(--text-on-brand); font-weight: 900; letter-spacing: -.04em;
}
.brand strong, .brand small { display: block; }
.brand strong { font-size: .98rem; letter-spacing: .02em; }
.brand small { margin-top: 1px; color: var(--text-secondary); font-size: .72rem; }
.site-nav { display: flex; gap: 6px; }
.site-nav a { padding: 9px 12px; border-radius: 999px; color: var(--text-secondary); text-decoration: none; font-size: .92rem; }
.site-nav a:hover, .site-nav a[aria-current="page"] { background: var(--brand-friendly); color: var(--text-primary); }

.hero { padding: 96px 0 76px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(270px, .65fr); gap: 56px; align-items: end; }
.eyebrow { margin: 0 0 14px; color: #66720f; font-size: .76rem; font-weight: 850; letter-spacing: .16em; }
.hero h1 { max-width: 840px; margin: 0; font-size: clamp(3rem, 7vw, 6.8rem); line-height: .97; letter-spacing: -.065em; font-weight: 850; }
.hero-copy { max-width: 710px; margin: 28px 0 0; color: var(--text-secondary); font-size: clamp(1.05rem, 2vw, 1.28rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 18px; border-radius: 999px; text-decoration: none; font-weight: 760; }
.button-primary { background: var(--action-primary-bg); color: var(--action-primary-text); }
.button-primary:hover { background: var(--action-primary-hover); }
.button-primary:active { background: var(--action-primary-active); }
.button-quiet { border: 1px solid var(--border-default); background: var(--surface-card); }
.button-quiet:hover { border-color: var(--border-brand); background: #fbfcf5; }
.hero-note { padding: 24px; border: 1px solid var(--border-brand); border-radius: var(--radius-lg); background: color-mix(in srgb, var(--brand-friendly) 55%, white); box-shadow: var(--shadow-soft); }
.hero-note p { margin: 12px 0 5px; color: var(--text-secondary); font-size: .83rem; }
.hero-note strong { font-size: 1.12rem; line-height: 1.5; }
.status-dot { display: block; width: 11px; height: 11px; border-radius: 50%; background: var(--brand-action); box-shadow: 0 0 0 7px rgb(150 171 43 / .13); }

.content-section { padding: 32px 0 104px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; padding-bottom: 24px; border-bottom: 1px solid var(--border-default); }
.section-heading h2 { margin: 0; font-size: clamp(1.8rem, 3vw, 2.7rem); letter-spacing: -.035em; }
.section-heading > p { max-width: 360px; margin: 0; color: var(--text-secondary); font-size: .92rem; text-align: right; }
.post-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 24px; }
.post-card { min-height: 260px; padding: 28px; border: 1px solid var(--border-default); border-radius: var(--radius-md); background: var(--surface-card); transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.post-card:hover { transform: translateY(-3px); border-color: var(--border-brand); box-shadow: var(--shadow-soft); }
.post-meta { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; color: var(--text-secondary); font-size: .78rem; font-weight: 650; }
.post-meta span { padding: 4px 9px; border-radius: 999px; background: var(--brand-friendly); color: var(--text-primary); }
.post-card h3 { margin: 20px 0 10px; font-size: 1.55rem; line-height: 1.24; letter-spacing: -.025em; }
.post-card h3 a { text-decoration: none; }
.post-card p { margin: 0; color: var(--text-secondary); }
.text-link { display: inline-block; margin-top: 22px; color: #647000; font-weight: 760; text-decoration: none; }
.empty-state { padding: 34px; border: 1px dashed var(--border-brand); border-radius: var(--radius-md); color: var(--text-secondary); }

.article-shell { padding: 74px 0 110px; }
.article { max-width: 830px; margin: 0 auto; }
.back-link { display: inline-block; margin-bottom: 34px; color: var(--text-secondary); text-decoration: none; }
.back-link:hover { color: var(--text-primary); }
.article-header { padding-bottom: 34px; border-bottom: 1px solid var(--border-default); }
.article-header.compact { padding-top: 10px; }
.article-header h1 { margin: 16px 0 16px; font-size: clamp(2.6rem, 6vw, 5.2rem); line-height: 1.02; letter-spacing: -.055em; }
.article-lead { max-width: 700px; margin: 0; color: var(--text-secondary); font-size: 1.16rem; }
.article-body { padding-top: 42px; font-size: 1.04rem; }
.article-body h2 { margin: 2.6em 0 .7em; font-size: 1.75rem; line-height: 1.3; letter-spacing: -.025em; }
.article-body h3 { margin: 2em 0 .6em; font-size: 1.32rem; }
.article-body p, .article-body ul, .article-body ol, .article-body pre, .article-body blockquote { margin-block: 1.15em; }
.article-body a { text-decoration-thickness: 1px; text-underline-offset: 3px; }
.article-body code { padding: .15em .38em; border-radius: 6px; background: #eceee4; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9em; }
.article-body pre { overflow-x: auto; padding: 20px; border-radius: 14px; background: var(--color-charcoal-900); color: #f1f1eb; line-height: 1.55; }
.article-body pre code { padding: 0; background: transparent; color: inherit; }
.article-body blockquote { margin-inline: 0; padding: 10px 0 10px 22px; border-left: 5px solid var(--brand-primary); color: var(--text-secondary); }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.6em 0; font-size: .94rem; }
.article-body th, .article-body td { padding: 10px 12px; border-bottom: 1px solid var(--border-default); text-align: left; vertical-align: top; }
.article-body th { background: color-mix(in srgb, var(--brand-friendly) 45%, white); }

.site-footer { border-top: 1px solid var(--border-default); background: var(--color-charcoal-900); color: var(--text-inverse); }
.footer-inner { min-height: 130px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-inner p { margin: 0; color: #d8d8d3; font-size: .82rem; }
.footer-inner p:last-child { color: var(--brand-friendly); }

@media (max-width: 760px) {
  .shell { width: min(calc(100% - 28px), var(--shell)); }
  .header-inner { min-height: 68px; }
  .brand small { display: none; }
  .site-nav a { padding-inline: 9px; }
  .hero { padding: 66px 0 54px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: clamp(3rem, 15vw, 5rem); }
  .hero-note { max-width: 520px; }
  .section-heading { align-items: start; flex-direction: column; }
  .section-heading > p { text-align: left; }
  .post-list { grid-template-columns: 1fr; }
  .article-shell { padding-top: 52px; }
  .footer-inner { padding: 28px 0; min-height: 0; align-items: flex-start; flex-direction: column; }
}

/* ==================================================
   Tags
   ================================================== */

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 2rem;
}


.post-tag {
    display: inline-flex;
    align-items: center;

    padding: 0.35rem 0.7rem;

    border-radius: 999px;

    background:
        var(--brand-soft, #e0ebaf);

    color:
        var(--text-color, #34402d);

    font-size: 0.86rem;
    font-weight: 600;

    text-decoration: none;

    transition:
        transform 0.15s ease,
        background-color 0.15s ease;
}


a.post-tag:hover {
    transform: translateY(-1px);

    background:
        var(--brand-light, #d6e69b);
}



/* ==================================================
   Tag cloud
   ================================================== */

.tag-cloud-section {
    margin-top: 4rem;
}


.section-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;

    gap: 1rem;
    margin-bottom: 1.4rem;
}


.section-heading h2 {
    margin: 0;
}


.section-more {
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
}


.tag-cloud {
    display: flex;
    flex-wrap: wrap;

    gap: 0.85rem 0.9rem;
    padding: 1.1rem 0 0;
}


.tag-cloud-item {
    display: inline-flex;
    align-items: center;

    gap: 0.55rem;
    padding: 0.75rem 1rem;

    border: 1px solid rgba(150, 171, 43, 0.22);
    border-radius: 999px;

    background: #f6f8eb;
    box-shadow: 0 6px 18px rgba(40, 52, 25, 0.05);

    color: #3d4824;
    text-decoration: none;

    transition:
        transform 0.15s ease,
        box-shadow 0.15s ease,
        background-color 0.15s ease,
        border-color 0.15s ease;
}


.tag-cloud-item:hover {
    transform: translateY(-2px);
    border-color: rgba(150, 171, 43, 0.35);
    background: var(--brand-soft, #e0ebaf);
    box-shadow: 0 12px 24px rgba(40, 52, 25, 0.08);
}


.tag-cloud-s {
    font-size: 0.98rem;
    font-weight: 600;
}


.tag-cloud-m {
    font-size: 1.08rem;
    font-weight: 600;
}


.tag-cloud-l {
    font-size: 1.2rem;
    font-weight: 700;
    padding: 0.8rem 1.08rem;
}


.tag-cloud-xl {
    font-size: 1.34rem;
    font-weight: 700;
    padding: 0.88rem 1.18rem;
}


.tag-cloud-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-width: 1.7rem;
    height: 1.7rem;
    padding: 0 0.42rem;

    border-radius: 999px;
    background: rgba(150, 171, 43, 0.18);

    font-size: 0.72em;
    font-weight: 700;
    line-height: 1;
    opacity: 1;
}



/* ==================================================
   Tag page
   ================================================== */

.tag-page-header {
    margin-bottom: 2.5rem;
}


.tag-page-label,
.page-kicker {
    margin-bottom: 0.4rem;

    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;

    opacity: 0.55;
}


.tag-page-header h1 {
    margin:
        0 0 0.35rem;
}


.tag-page-count {
    margin: 0;
    opacity: 0.62;
}



/* ==================================================
   Search
   ================================================== */

.site-search {
    position: relative;

    width: min(
        280px,
        32vw
    );
}


.site-search-input {
    width: 100%;

    padding:
        0.55rem
        0.8rem;

    border:
        1px solid
        rgba(0, 0, 0, 0.12);

    border-radius: 999px;

    background:
        rgba(255, 255, 255, 0.78);

    color: inherit;

    font: inherit;

    outline: none;
}


.site-search-input:focus {
    border-color:
        var(--brand-accent, #96ab2b);

    box-shadow:
        0 0 0 3px
        rgba(150, 171, 43, 0.12);
}


.site-search-results {
    position: absolute;

    z-index: 100;

    top: calc(100% + 0.55rem);
    right: 0;

    width:
        min(
            520px,
            90vw
        );

    max-height: 70vh;

    overflow-y: auto;

    padding: 0.45rem;

    border:
        1px solid
        rgba(0, 0, 0, 0.1);

    border-radius: 16px;

    background: #fff;

    box-shadow:
        0 16px 40px
        rgba(0, 0, 0, 0.12);
}


.search-result-item {
    display: block;

    padding:
        0.8rem
        0.9rem;

    border-radius: 11px;

    color: inherit;
    text-decoration: none;
}


.search-result-item:hover {
    background:
        var(--brand-soft, #e0ebaf);
}


.search-result-title {
    margin-bottom: 0.2rem;

    font-weight: 700;
}


.search-result-meta {
    margin-bottom: 0.3rem;

    font-size: 0.74rem;

    opacity: 0.58;
}


.search-result-excerpt {
    font-size: 0.82rem;
    line-height: 1.55;

    opacity: 0.72;
}


.search-empty {
    padding: 1rem;

    font-size: 0.86rem;

    text-align: center;
    opacity: 0.6;
}


.sr-only {
    position: absolute;

    width: 1px;
    height: 1px;

    padding: 0;
    margin: -1px;

    overflow: hidden;

    clip: rect(
        0,
        0,
        0,
        0
    );

    white-space: nowrap;

    border: 0;
}



/* ==================================================
   Mobile
   ================================================== */

@media (max-width: 720px) {

    .site-search {
        width: 100%;
    }


    .site-search-results {
        position: fixed;

        top: 72px;
        left: 1rem;
        right: 1rem;

        width: auto;
    }

}


/* ==================================================
   Tag/search integration fixes
   ================================================== */

.post-card h2 {
  margin: 20px 0 10px;
  font-size: 1.55rem;
  line-height: 1.24;
  letter-spacing: -.025em;
}

.post-card h2 a {
  text-decoration: none;
}

@media (max-width: 760px) {
  .header-inner {
    flex-wrap: wrap;
    padding-block: 10px;
  }

  .site-search {
    order: 3;
    flex-basis: 100%;
    width: 100%;
  }
}


@media (max-width: 720px) {

    .tag-cloud {
        gap: 0.7rem;
    }


    .tag-cloud-item,
    .tag-cloud-l,
    .tag-cloud-xl {
        padding: 0.68rem 0.9rem;
    }


    .tag-cloud-xl {
        font-size: 1.18rem;
    }
}