/* =====================================================================
   Dropwave — premium light editorial theme
   Design system: near-black ink · vivid indigo-blue accent · warm white
   Balanced motion · cover-aware · WCAG AA
   ===================================================================== */

/* ---------- Design tokens ---------- */
:root{
  /* ink & surfaces */
  --ink:#0b0b12;          /* headings / near-black */
  --ink-2:#20232e;        /* strong body */
  --body:#3a3f4b;         /* body text */
  --muted:#6b7180;        /* secondary */
  --faint:#9aa1ad;        /* tertiary / meta */
  --bg:#ffffff;
  --bg-soft:#f7f8fb;      /* warm off-white section */
  --bg-tint:#f2f5ff;      /* faint blue wash */
  --card:#ffffff;
  --line:#eceef3;
  --line-2:#e2e5ec;

  /* accent */
  --accent:#3b5bff;
  --accent-ink:#2c46e6;   /* accent for small text on white */
  --accent-strong:#2338c9;/* pressed */
  --accent-tint:#eef2ff;
  --accent-tint-2:#e2e9ff;

  /* gradients for cover fallbacks */
  --g1:linear-gradient(135deg,#3b5bff 0%,#7c3aed 100%);
  --g2:linear-gradient(135deg,#0ea5e9 0%,#3b5bff 100%);
  --g3:linear-gradient(135deg,#111827 0%,#3b5bff 120%);
  --g4:linear-gradient(135deg,#6366f1 0%,#ec4899 100%);
  --g5:linear-gradient(135deg,#059669 0%,#3b5bff 130%);

  /* type — honor Ghost custom-font settings, fall back to theme defaults */
  --font-display:var(--gh-font-heading,'Sora'),-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-body:var(--gh-font-body,'Inter'),-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;

  /* radii */
  --r-xl:26px;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --pill:999px;

  /* shadows (soft, premium) */
  --sh-xs:0 1px 2px rgba(16,24,40,.05);
  --sh-sm:0 2px 8px rgba(16,24,40,.06);
  --sh-md:0 8px 24px rgba(16,24,40,.08);
  --sh-lg:0 24px 60px -18px rgba(16,24,40,.22);
  --sh-accent:0 10px 30px -8px rgba(59,91,255,.45);

  /* layout */
  --wrap:1220px;
  --gutter:24px;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset / base ---------- */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--body);
  font-family:var(--font-body);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;display:block}
a{color:var(--accent-ink);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--accent-strong)}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);line-height:1.12;margin:0;font-weight:700;letter-spacing:-.02em}
p{margin:0}
::selection{background:var(--accent-tint-2);color:var(--ink)}
:focus-visible{outline:3px solid rgba(59,91,255,.5);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:16px;top:-60px;z-index:200;background:var(--accent);color:#fff;font-weight:600;padding:11px 18px;border-radius:var(--pill);box-shadow:var(--sh-md);transition:top .2s var(--ease)}
.skip-link:focus{top:14px;color:#fff}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;cursor:pointer;
  font-family:var(--font-body);font-weight:600;font-size:15.5px;letter-spacing:-.01em;
  padding:13px 24px;border-radius:var(--pill);border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;line-height:1;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--sh-accent)}
.btn-primary:hover{background:var(--accent-ink);color:#fff;transform:translateY(-2px);box-shadow:0 16px 36px -10px rgba(59,91,255,.55)}
.btn-primary:active{transform:translateY(0);background:var(--accent-strong)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line-2);box-shadow:var(--sh-xs)}
.btn-ghost:hover{color:var(--ink);border-color:#cfd4e0;transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-sm{padding:10px 18px;font-size:14px}

/* ---------- Header ---------- */
.site-head{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.8);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;transition:border-color .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease)}
.site-head.is-stuck{border-bottom-color:var(--line);box-shadow:0 2px 20px rgba(16,24,40,.05)}
.site-head-inner{display:flex;align-items:center;gap:20px;height:72px}
.site-logo{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:800;font-size:21px;color:var(--ink);letter-spacing:-.03em}
.site-logo:hover{color:var(--ink)}
.logo-mark{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:11px;background:var(--g1);color:#fff;box-shadow:var(--sh-accent)}
.logo-mark svg{width:20px;height:20px}
.site-nav{display:flex;align-items:center;margin-left:8px}
.site-nav ul{list-style:none;display:flex;gap:2px;margin:0;padding:0}
.site-nav a{display:inline-block;padding:9px 15px;border-radius:var(--pill);color:#41475a;font-weight:500;font-size:15px;transition:background .18s var(--ease),color .18s var(--ease)}
.site-nav a:hover{background:var(--accent-tint);color:var(--accent-ink)}
.site-nav .nav-current a{background:var(--accent-tint);color:var(--accent-ink);font-weight:600}
.head-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{display:inline-grid;place-items:center;width:42px;height:42px;border-radius:var(--pill);border:1px solid var(--line-2);background:#fff;color:var(--ink);cursor:pointer;transition:all .18s var(--ease)}
.icon-btn:hover{border-color:#cfd4e0;background:var(--bg-soft);transform:translateY(-1px)}
.icon-btn svg{width:19px;height:19px}
.nav-toggle{display:none}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:78px 0 46px;text-align:center}
.hero:before{content:"";position:absolute;inset:0;background:
  radial-gradient(60% 60% at 50% -10%,rgba(59,91,255,.12),transparent 60%),
  radial-gradient(40% 40% at 85% 20%,rgba(124,58,237,.10),transparent 60%);
  pointer-events:none}
.hero-inner{position:relative;max-width:860px;margin:0 auto}
.hero-badge{display:inline-flex;align-items:center;gap:9px;padding:7px 15px 7px 11px;border-radius:var(--pill);background:#fff;border:1px solid var(--line-2);box-shadow:var(--sh-sm);font-size:13.5px;font-weight:600;color:var(--ink-2);margin-bottom:26px}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-tint)}
.hero-badge .tag{color:var(--accent-ink);font-weight:700}
.hero-title{font-size:clamp(2.6rem,6.2vw,5rem);font-weight:800;letter-spacing:-.035em;line-height:1.02;color:var(--ink)}
.hero-title .hl{color:var(--accent)}
.hero-sub{font-size:clamp(1.06rem,1.7vw,1.32rem);color:var(--muted);margin:22px auto 0;max-width:620px;line-height:1.55}
.hero-cta{display:flex;flex-wrap:wrap;gap:13px;justify-content:center;margin-top:34px}

/* ---------- Section scaffolding ---------- */
.section{padding:26px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:22px}
.eyebrow{display:inline-block;font-family:var(--font-body);font-weight:700;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-ink)}
.section-title{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:700;letter-spacing:-.025em;margin-top:8px}
.section-link{font-weight:600;font-size:14.5px;color:var(--ink);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.section-link:hover{color:var(--accent-ink)}
.section-link svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.section-link:hover svg{transform:translateX(3px)}

/* ---------- Topic strip ---------- */
.topics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.topic{display:flex;align-items:center;gap:13px;padding:18px 18px;border-radius:var(--r-md);background:var(--card);border:1px solid var(--line);box-shadow:var(--sh-xs);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.topic:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--accent-tint-2)}
.topic-ic{flex:0 0 44px;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:#fff}
.topic-ic svg{width:22px;height:22px}
.topic:nth-child(1) .topic-ic{background:var(--g2)}
.topic:nth-child(2) .topic-ic{background:var(--g1)}
.topic:nth-child(3) .topic-ic{background:var(--g4)}
.topic:nth-child(4) .topic-ic{background:var(--g5)}
.topic-tx b{display:block;font-family:var(--font-display);font-weight:600;font-size:15.5px;color:var(--ink);letter-spacing:-.01em}
.topic-tx span{font-size:13px;color:var(--muted)}

/* ---------- Featured ---------- */
.featured{display:grid;grid-template-columns:1.15fr .85fr;gap:0;background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-md);transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.featured:hover{box-shadow:var(--sh-lg);transform:translateY(-3px)}
.featured-media{position:relative;min-height:340px;overflow:hidden}
.featured-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.featured:hover .featured-media img{transform:scale(1.05)}
.featured-body{padding:38px 40px;display:flex;flex-direction:column;justify-content:center}
.featured-body .eyebrow{margin-bottom:14px}
.featured-title{font-size:clamp(1.6rem,2.5vw,2.3rem);font-weight:700;letter-spacing:-.03em;line-height:1.1}
.featured-title a{color:var(--ink)}
.featured-title a:hover{color:var(--accent-ink)}
.featured-excerpt{color:var(--muted);font-size:16px;margin-top:14px;line-height:1.6}
.featured-meta{margin-top:22px}

/* ---------- Meta row ---------- */
.meta{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted)}
.meta .avatar{width:26px;height:26px;border-radius:50%;object-fit:cover}
.avatar-ph{display:inline-grid;place-items:center;background:var(--accent-tint);color:var(--accent-ink);font-weight:700;font-size:12px;text-transform:uppercase;font-family:var(--font-display)}
.meta .author{color:var(--ink-2);font-weight:600}
.meta .dot{opacity:.5}
.meta .read{margin-left:auto;color:var(--muted)}

/* ---------- Layout: feed + sidebar ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 328px;gap:40px;padding:34px 0 64px;align-items:start}
.feed-head{margin-bottom:22px}
.feed-title{font-size:2rem;font-weight:700;letter-spacing:-.03em}
.feed-desc{color:var(--muted);margin-top:8px;max-width:60ch}
.author-head{display:flex;align-items:center;gap:18px}
.author-avatar{width:64px;height:64px;border-radius:var(--pill);object-fit:cover;flex:none;border:1px solid var(--line-2)}
.author-avatar.avatar-ph{display:grid;place-items:center;background:var(--accent-tint);color:var(--accent-ink);font-family:var(--font-display);font-weight:700;font-size:26px}

/* ---------- Card grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-xs);transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:#e6e9f2}
.card-img{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft)}
/* unified cover art direction: crisp inner hairline on every cover */
.card-img::after,.featured-media::after{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:inset 0 0 0 1px rgba(11,11,18,.06);pointer-events:none;z-index:3}
.card-chip,.cover-fallback{z-index:4}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-img img{transform:scale(1.06)}
.card-chip{position:absolute;left:13px;top:13px;background:rgba(255,255,255,.92);color:var(--ink);font-size:11.5px;font-weight:700;letter-spacing:.02em;padding:6px 11px;border-radius:var(--pill);backdrop-filter:blur(6px);box-shadow:var(--sh-xs)}
.card-body{padding:20px 21px 22px;display:flex;flex-direction:column;gap:11px;flex:1}
.card-title{font-size:19px;font-weight:600;letter-spacing:-.02em;line-height:1.28;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a{color:var(--ink)}
.card-title a:hover{color:var(--accent-ink)}
.card-excerpt{color:var(--muted);font-size:14.5px;line-height:1.55;margin:0;flex:1;display:-webkit-box;-webkit-line-clamp:3;line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* cover fallback (no feature image) */
.cover-fallback{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:space-between;padding:18px 20px;color:#fff;overflow:hidden}
.cover-fallback:before{content:"";position:absolute;right:-40px;bottom:-60px;width:190px;height:190px;border-radius:50%;background:rgba(255,255,255,.10)}
.cover-fallback .cf-tag{font-family:var(--font-body);font-weight:700;font-size:12px;letter-spacing:.12em;text-transform:uppercase;opacity:.9;position:relative}
.cover-fallback .cf-title{font-family:var(--font-display);font-weight:700;font-size:20px;line-height:1.2;letter-spacing:-.02em;position:relative;text-shadow:0 1px 12px rgba(0,0,0,.15)}
.cover-fallback .cf-mark{position:absolute;right:16px;top:14px;font-family:var(--font-display);font-weight:800;font-size:13px;letter-spacing:.02em;opacity:.85}
.card-img .cover-fallback{transition:transform .5s var(--ease)}
.card:hover .card-img .cover-fallback{transform:scale(1.04)}
.card:nth-child(4n+1) .cover-fallback{background:var(--g1)}
.card:nth-child(4n+2) .cover-fallback{background:var(--g2)}
.card:nth-child(4n+3) .cover-fallback{background:var(--g4)}
.card:nth-child(4n) .cover-fallback{background:var(--g3)}
.featured-media .cover-fallback{padding:30px 34px;background:var(--g3)}
.featured-media .cover-fallback .cf-title{font-size:30px}

/* ---------- Sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:22px;position:sticky;top:96px}
.widget{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-xs);padding:22px 22px 24px}
.widget-title{font-family:var(--font-display);font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--ink);margin-bottom:16px;display:flex;align-items:center;gap:9px}
.widget-title .bar{width:22px;height:3px;border-radius:2px;background:var(--accent)}
.cat-list{list-style:none;margin:0;padding:0}
.cat-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;color:var(--ink-2);font-weight:500;font-size:15px;border-bottom:1px solid var(--line)}
.cat-list li:last-child a{border-bottom:0;padding-bottom:0}
.cat-list a:hover{color:var(--accent-ink)}
.cat-list em{font-style:normal;background:var(--accent-tint);color:var(--accent-ink);font-size:12px;font-weight:700;padding:3px 10px;border-radius:var(--pill);min-width:30px;text-align:center}
.mini-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:16px}
.mini{display:flex;gap:13px;align-items:center}
.mini-img{flex:0 0 62px;width:62px;height:50px;border-radius:10px;overflow:hidden;background:var(--bg-soft);position:relative}
.mini-img img{width:100%;height:100%;object-fit:cover}
.mini-ph{position:absolute;inset:0;display:grid;place-items:center;background:var(--g1);color:#fff;font-family:var(--font-display);font-weight:800;font-size:13px}
.mini-title{font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.35;letter-spacing:-.01em}
.mini-title:hover{color:var(--accent-ink)}
.widget-about p{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.widget-cta{background:linear-gradient(160deg,#101322 0%,#1c2547 100%);border:0;color:#fff;position:relative;overflow:hidden}
.widget-cta:before{content:"";position:absolute;right:-50px;top:-50px;width:170px;height:170px;border-radius:50%;background:radial-gradient(circle,rgba(59,91,255,.55),transparent 70%)}
.widget-cta .widget-title{color:#fff;position:relative}
.widget-cta p{color:rgba(255,255,255,.72);position:relative}
.widget-cta .btn{position:relative;width:100%;justify-content:center}

/* ---------- Pagination ---------- */
.pagination{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:44px}
.pagination a,.pagination .page-number{font-weight:600;font-size:14.5px}
.pagination a{padding:11px 20px;border-radius:var(--pill);border:1px solid var(--line-2);background:#fff;color:var(--ink);transition:all .18s var(--ease)}
.pagination a:hover{border-color:var(--accent);color:var(--accent-ink);transform:translateY(-1px)}
.pagination .page-number{color:var(--muted)}

/* ---------- Article ---------- */
.article-wrap{max-width:760px;margin:0 auto;padding:46px var(--gutter) 40px}
.crumbs{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--muted);margin-bottom:24px;justify-content:center}
.crumbs a{color:var(--muted);font-weight:500}
.crumbs a:hover{color:var(--accent-ink)}
.crumbs-sep{opacity:.5}
.article-head{text-align:center;margin-bottom:30px}
.article-chip{display:inline-block;background:var(--accent-tint);color:var(--accent-ink);font-weight:700;font-size:12.5px;letter-spacing:.02em;padding:6px 14px;border-radius:var(--pill);margin-bottom:20px}
.article-title{font-size:clamp(2rem,4.4vw,3.1rem);font-weight:800;letter-spacing:-.035em;line-height:1.08}
.article-lead{font-size:20px;color:var(--muted);margin-top:20px;line-height:1.55;max-width:620px;margin-left:auto;margin-right:auto}
.article-meta{justify-content:center;margin-top:26px}
.article-cover{margin:8px 0 6px;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-md)}
.article-cover.full{max-width:1080px;margin-left:auto;margin-right:auto}
.article-cover img{width:100%}

/* content typography */
.gh-content{font-size:18.5px;line-height:1.8;color:var(--ink-2)}
.gh-content > *{margin:0 0 22px}
.gh-content h2{font-size:29px;font-weight:700;letter-spacing:-.025em;margin:44px 0 14px;color:var(--ink)}
.gh-content h3{font-size:22px;font-weight:700;margin:32px 0 10px;color:var(--ink)}
.gh-content a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1.5px;text-decoration-color:var(--accent-tint-2)}
.gh-content a:hover{text-decoration-color:var(--accent)}
.gh-content ul,.gh-content ol{padding-left:24px}
.gh-content li{margin:9px 0}
.gh-content li::marker{color:var(--accent)}
.gh-content img,.gh-content video{border-radius:var(--r-md);box-shadow:var(--sh-sm)}
.gh-content figure{margin:30px 0}
.gh-content figcaption{text-align:center;font-size:13.5px;color:var(--faint);margin-top:10px}
.gh-content blockquote{margin:30px 0;padding:6px 0 6px 26px;border-left:4px solid var(--accent);font-family:var(--font-display);font-size:22px;font-weight:500;color:var(--ink);letter-spacing:-.02em;font-style:normal;line-height:1.4}
.gh-content hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.gh-content code{background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:.15em .4em;font-size:.88em}
.gh-content pre{background:#0e1222;color:#e7ebff;border-radius:var(--r-md);padding:20px 22px;overflow:auto;font-size:14.5px;line-height:1.6}
.gh-content pre code{background:none;border:0;padding:0;color:inherit}
.kg-bookmark-card,.kg-image-card{margin:30px 0}
.gh-content .kg-width-wide{position:relative;width:min(1080px,92vw);margin-left:50%;transform:translateX(-50%)}
.gh-content .kg-width-full{position:relative;width:100vw;margin-left:50%;transform:translateX(-50%)}
.gh-content .kg-width-full img{border-radius:0;box-shadow:none;width:100%}
.gh-content .kg-width-wide img{width:100%}

.article-foot{max-width:760px;margin:0 auto;padding:0 var(--gutter)}
.article-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px;padding-top:26px;border-top:1px solid var(--line)}
.tag-chip{background:var(--bg-soft);color:var(--ink-2);font-size:13px;font-weight:600;padding:7px 15px;border-radius:var(--pill);border:1px solid var(--line);transition:all .18s var(--ease)}
.tag-chip:hover{background:var(--accent-tint);color:var(--accent-ink);border-color:var(--accent-tint-2)}
.share{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:26px;padding-top:24px;border-top:1px solid var(--line)}
.share-label{font-family:var(--font-display);font-weight:600;font-size:15px;color:var(--ink)}
.share-btns{display:flex;align-items:center;gap:10px}
.share-btn{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:var(--pill);border:1px solid var(--line-2);background:#fff;color:var(--ink);cursor:pointer;transition:all .18s var(--ease);position:relative}
.share-btn:hover{color:#fff;background:var(--accent);border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--sh-accent)}
.share-btn svg{width:18px;height:18px}
.copy-label{position:absolute;bottom:calc(100% + 8px);left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;font-size:12px;font-weight:600;padding:5px 10px;border-radius:8px;white-space:nowrap;opacity:0;transition:opacity .2s var(--ease);pointer-events:none}
.copy-label:not(:empty){opacity:1}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-top:28px;color:var(--muted);font-weight:600;font-size:15px}
.back-link:hover{color:var(--accent-ink)}
.back-link svg{width:17px;height:17px}

/* reading progress bar */
.read-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:70;background:transparent;pointer-events:none}
.read-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),#7c3aed);border-radius:0 3px 3px 0;transition:width .12s linear}

/* floating table of contents (desktop) */
.toc-float{display:none}
@media (min-width:1280px){
  .toc-float{display:block;position:fixed;top:120px;left:max(24px,calc(50% - 610px));width:214px;z-index:40}
}
.toc-inner{border-left:2px solid var(--line);padding-left:16px}
.toc-label{font-family:var(--font-display);font-weight:700;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:12px}
.toc-float ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-float a{display:block;padding:6px 0 6px 12px;margin-left:-18px;border-left:2px solid transparent;color:var(--muted);font-size:13.5px;line-height:1.4;transition:color .18s var(--ease),border-color .18s var(--ease)}
.toc-float a.sub{padding-left:24px;font-size:13px}
.toc-float a:hover{color:var(--ink)}
.toc-float a.active{color:var(--accent-ink);border-left-color:var(--accent);font-weight:600}

/* comments */
.article-comments{padding-top:8px;padding-bottom:40px}
.comments-title{font-size:1.5rem;font-weight:700;letter-spacing:-.025em;margin-bottom:18px}

/* read next */
.read-next{background:var(--bg-soft);border-top:1px solid var(--line);margin-top:0;padding:56px 0}
.read-next-title{font-size:clamp(1.5rem,2.4vw,1.9rem);font-weight:700;letter-spacing:-.03em;margin-bottom:26px}

/* ---------- Generic content pages (About, Start Here) ---------- */
.page-hero{text-align:center;padding:60px 0 8px;position:relative;overflow:hidden}
.page-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(55% 55% at 50% -10%,rgba(59,91,255,.10),transparent 60%);pointer-events:none}
.page-hero .wrap{position:relative;max-width:800px}
.page-title{font-size:clamp(2.2rem,4.8vw,3.6rem);font-weight:800;letter-spacing:-.035em;line-height:1.04;margin-top:12px}
.page-title .hl{color:var(--accent)}
.page-lead{font-size:19px;color:var(--muted);margin:18px auto 0;max-width:660px;line-height:1.6}
.prose{max-width:720px;margin:0 auto;font-size:18px;line-height:1.78;color:var(--ink-2)}
.prose p{margin:0 0 20px}
.prose strong{color:var(--ink)}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.value{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;box-shadow:var(--sh-xs);transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.value:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
.value-ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;color:#fff;margin-bottom:16px}
.value-ic svg{width:23px;height:23px}
.value:nth-child(1) .value-ic{background:var(--g2)}
.value:nth-child(2) .value-ic{background:var(--g1)}
.value:nth-child(3) .value-ic{background:var(--g4)}
.value h3{font-size:18px;margin-bottom:8px;letter-spacing:-.01em}
.value p{color:var(--muted);font-size:14.5px;line-height:1.6}
.cta-band{background:linear-gradient(150deg,#101322,#1c2547);border-radius:var(--r-xl);padding:56px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-band:before{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(59,91,255,.5),transparent 70%)}
.cta-band h2{color:#fff;font-size:clamp(1.6rem,3vw,2.3rem);letter-spacing:-.03em;position:relative}
.cta-band p{color:rgba(255,255,255,.72);max-width:540px;margin:14px auto 26px;position:relative;font-size:16px;line-height:1.6}
.cta-band .hero-cta{position:relative}
/* guided path (Start Here) */
.path{display:flex;flex-direction:column;gap:14px;max-width:840px;margin:0 auto}
.path-step{display:flex;gap:22px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 26px;box-shadow:var(--sh-xs);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.path-step:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--accent-tint-2)}
.path-num{flex:0 0 46px;width:46px;height:46px;border-radius:50%;background:var(--accent);color:#fff;font-family:var(--font-display);font-weight:700;font-size:18px;display:grid;place-items:center;box-shadow:var(--sh-accent)}
.path-body h3{font-size:19px;margin-bottom:6px;letter-spacing:-.01em}
.path-body p{color:var(--muted);font-size:15px;line-height:1.6;margin-bottom:10px}
.path-link{font-weight:600;font-size:14.5px;color:var(--accent-ink);display:inline-flex;align-items:center;gap:6px}
.path-link svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.path-link:hover svg{transform:translateX(3px)}
/* empty state */
.empty-state{grid-column:1/-1;text-align:center;padding:56px 24px;background:var(--bg-soft);border:1px dashed var(--line-2);border-radius:var(--r-lg)}
.empty-state h3{font-size:20px;margin-bottom:8px}
.empty-state p{color:var(--muted);margin-bottom:18px}
@media (max-width:860px){.values{grid-template-columns:1fr}}
@media (max-width:560px){.path-step{flex-direction:column;gap:14px}.cta-band{padding:40px 24px}}

/* ---------- Write for us ---------- */
.wf{padding:46px 0 72px}
.wf-head{max-width:720px;text-align:center;margin:0 auto 40px}
.wf-title{font-size:clamp(2.2rem,4.5vw,3.4rem);font-weight:800;letter-spacing:-.035em;line-height:1.05;margin-top:10px}
.wf-title .hl{color:var(--accent)}
.wf-sub{font-size:18px;color:var(--muted);margin-top:16px;line-height:1.55}
.wf-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;align-items:start}
.wf-form{background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-md);padding:32px 34px;display:flex;flex-direction:column;gap:20px}
.wf-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.wf-field{display:flex;flex-direction:column;gap:8px;min-width:0}
.wf-field label{font-family:var(--font-display);font-weight:600;font-size:14.5px;color:var(--ink)}
.wf-field .req{color:var(--accent);font-weight:700}
.wf-opt{color:var(--faint);font-weight:400;font-size:13px}
.wf-field input,.wf-field select,.wf-field textarea{
  font-family:var(--font-body);font-size:15.5px;color:var(--ink);background:#fff;
  border:1px solid var(--line-2);border-radius:var(--r-sm);padding:12px 14px;width:100%;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.wf-field textarea{resize:vertical;min-height:180px;line-height:1.6}
.wf-field input:focus,.wf-field select:focus,.wf-field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-tint)}
.wf-field input::placeholder,.wf-field textarea::placeholder{color:var(--faint)}
.wf-field input[type=file]{padding:10px 14px;cursor:pointer}
.wf-field input[type=file]::file-selector-button{font-family:var(--font-body);font-weight:600;font-size:13.5px;margin-right:12px;padding:8px 14px;border:0;border-radius:var(--pill);background:var(--accent-tint);color:var(--accent-ink);cursor:pointer;transition:background .18s var(--ease)}
.wf-field input[type=file]::file-selector-button:hover{background:var(--accent-tint-2)}
.wf-help{font-size:12.5px;color:var(--faint)}
.wf-hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0;pointer-events:none}
.wf-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px}
.wf-status{font-size:14px;font-weight:600}
.wf-status.err{color:var(--destructive,#dc2626)}
.wf-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.wf-steps{list-style:none;margin:0;padding:0;counter-reset:s;display:flex;flex-direction:column;gap:16px}
.wf-steps li{position:relative;padding-left:42px;counter-increment:s}
.wf-steps li:before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-family:var(--font-display);font-weight:700;font-size:14px;display:grid;place-items:center}
.wf-steps b{display:block;font-family:var(--font-display);font-size:15px;color:var(--ink);font-weight:600}
.wf-steps span{font-size:13.5px;color:var(--muted)}
.wf-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.wf-list li{position:relative;padding-left:24px;font-size:14.5px;color:var(--ink-2)}
.wf-list li:before{content:"";position:absolute;left:2px;top:8px;width:8px;height:8px;border-radius:50%;background:var(--accent)}
.wf-gate{grid-column:1/-1;max-width:560px;margin:0 auto;text-align:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-md);padding:44px 40px}
.wf-gate h2{font-size:24px;font-weight:700;letter-spacing:-.025em}
.wf-gate p{color:var(--muted);margin:14px 0 0;font-size:16px;line-height:1.6}
.wf-gate-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.wf-done{max-width:620px;margin:0 auto}
.wf-done-card{text-align:center;background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-md);padding:48px 40px}
.wf-done-ic{display:inline-grid;place-items:center;width:64px;height:64px;border-radius:50%;background:var(--accent-tint);color:var(--accent-ink);margin-bottom:20px}
.wf-done-ic svg{width:32px;height:32px}
.wf-done-card h2{font-size:26px;font-weight:700;letter-spacing:-.025em}
.wf-done-card p{color:var(--muted);margin:14px 0 24px;font-size:16px;line-height:1.6}
@media (max-width:900px){.wf-grid{grid-template-columns:1fr}.wf-side{position:static;flex-direction:row;flex-wrap:wrap}.wf-side .widget{flex:1 1 220px}}
@media (max-width:560px){.wf-row{grid-template-columns:1fr}.wf-form{padding:24px 20px}.wf-side{flex-direction:column}}

/* ---------- Footer ---------- */
.site-foot{background:#0b0d16;color:rgba(255,255,255,.62);margin-top:0;padding:60px 0 34px}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.09)}
.foot-brand .site-logo{color:#fff;font-size:22px}
.foot-brand p{margin-top:16px;max-width:34ch;font-size:15px;color:rgba(255,255,255,.55)}
.foot-col h4{font-family:var(--font-display);color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.1em;font-weight:700;margin-bottom:16px}
.foot-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.foot-col a{color:rgba(255,255,255,.6);font-size:15px}
.foot-col a:hover{color:#fff}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:26px;font-size:13.5px;color:rgba(255,255,255,.45)}
.foot-bottom .logo-mark{width:28px;height:28px;border-radius:9px}
.foot-bottom .logo-mark svg{width:15px;height:15px}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.reveal-d1{transition-delay:.06s}
.reveal-d2{transition-delay:.12s}
.reveal-d3{transition-delay:.18s}
.reveal-d4{transition-delay:.24s}

/* ---------- Premium motion ---------- */
/* page entrance (opacity only — transform here would trap position:fixed children) */
@keyframes pageIn{from{opacity:0}to{opacity:1}}
.site-main{animation:pageIn .45s ease both}
/* hero ambient breathing */
@keyframes heroFloat{from{transform:translate3d(0,6px,0) scale(1)}to{transform:translate3d(0,-14px,0) scale(1.06)}}
.hero:before{animation:heroFloat 15s ease-in-out infinite alternate}
/* primary button sheen on hover */
.btn-primary{position:relative;overflow:hidden}
.btn-primary:before{content:"";position:absolute;top:0;left:-40%;width:35%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.4),transparent);transform:skewX(-18deg);opacity:0;transition:none}
.btn-primary:hover:before{animation:sheen .8s var(--ease)}
@keyframes sheen{0%{left:-40%;opacity:0}18%{opacity:1}100%{left:130%;opacity:0}}
/* cards get GPU hint for smooth tilt */
.card,.featured,.topic{will-change:transform}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .layout{grid-template-columns:1fr;gap:0}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap;margin-top:44px}
  .sidebar .widget{flex:1 1 260px}
}
@media (max-width:860px){
  .site-nav,.head-actions .btn{display:none}
  .nav-toggle{display:inline-grid}
  .topics{grid-template-columns:repeat(2,1fr)}
  .featured{grid-template-columns:1fr}
  .featured-media{min-height:230px;aspect-ratio:16/9}
  .featured-body{padding:28px 26px}
  .hero{padding:56px 0 34px}
  .foot-top{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:600px){
  body{font-size:16px}
  .card-grid{grid-template-columns:1fr}
  .topics{grid-template-columns:1fr}
  .sidebar{flex-direction:column}
  .section-head{flex-wrap:wrap}
  .foot-top{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;text-align:center}
  .gh-content{font-size:17.5px}
}

/* ---------- Mobile nav drawer ---------- */
.mobile-nav{position:fixed;inset:0;z-index:80;background:rgba(11,13,22,.4);backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s}
.mobile-nav.open{opacity:1;visibility:visible}
.mobile-nav-panel{position:absolute;top:0;right:0;height:100%;width:min(82vw,340px);background:#fff;box-shadow:var(--sh-lg);transform:translateX(100%);transition:transform .34s var(--ease);padding:24px;display:flex;flex-direction:column;gap:6px}
.mobile-nav.open .mobile-nav-panel{transform:none}
.mobile-nav-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.mobile-nav a{padding:13px 14px;border-radius:12px;color:var(--ink);font-weight:600;font-size:17px}
.mobile-nav a:hover{background:var(--bg-soft)}
.mobile-nav ul{list-style:none;margin:0;padding:0}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .reveal{opacity:1!important;transform:none!important;transition:none!important}
  .btn,.card,.topic,.featured,.card-img img,.featured-media img{transition:none!important}
  .card:hover,.topic:hover,.featured:hover,.btn-primary:hover,.btn-ghost:hover{transform:none!important}
  .site-main{animation:none!important}
  .hero:before{animation:none!important}
  .btn-primary:hover:before{animation:none!important}
  .read-progress span{transition:none!important}
}