/* AGRO SITES — core design system (dùng chung 2 theme). Mobile-first. */
:root{--font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;--font-head:var(--font);--bg:#FBF8F2;--surface:#fff;--ink:#1B1F1A;--muted:#5F655C;--line:#E6E0D4;--accent:#2F6B3A;--accent-ink:#fff;--accent-2:#C8792B;--soft:#EEF3EA;--radius:14px;--shadow:0 6px 24px rgba(27,31,26,.08);--max:1180px;--ok:#2F6B3A;--warn:#B7791F;--pending:#8A8F86;--err:#B42318}
*{box-sizing:border-box}[hidden]{display:none!important}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
img,svg,video{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-head);line-height:1.15;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}h1{font-size:clamp(1.9rem,4.5vw,3.1rem)}h2{font-size:clamp(1.5rem,3vw,2.2rem)}h3{font-size:1.2rem;font-weight:700}h4{font-size:1rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
p{margin:0 0 1em}.lead{font-size:1.12rem;color:var(--muted)}.muted{color:var(--muted)}.small{font-size:.85rem}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}.narrow{max-width:800px}.section{padding:56px 0}.section-tight{padding:32px 0}.section-alt{background:var(--surface)}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:8px 12px;z-index:100}.skip:focus{left:8px;top:8px}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.site-header .wrap{display:flex;align-items:center;gap:20px;min-height:64px}
.brand{display:flex;align-items:center;font-weight:800;font-size:1.25rem}.site-nav{display:none;flex:1}.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px;flex-wrap:wrap}.site-nav a{display:block;padding:8px 10px;border-radius:8px;font-weight:600;font-size:.92rem}.site-nav a:hover,.site-nav a[aria-current]{background:var(--soft);text-decoration:none;color:var(--accent)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}.search-mini{display:none;align-items:center;border:1px solid var(--line);border-radius:999px;padding:2px 4px 2px 12px;background:#fff}.search-mini input{border:0;outline:0;font:inherit;width:190px;background:transparent}.search-mini button{border:0;background:var(--soft);border-radius:999px;width:30px;height:30px;cursor:pointer;color:var(--accent);font-size:1.1rem}
.nav-toggle{border:1px solid var(--line);background:#fff;border-radius:10px;width:42px;height:42px;font-size:1.3rem;cursor:pointer}.mobile-nav{border-top:1px solid var(--line);background:#fff}.mobile-nav ul{list-style:none;margin:0;padding:8px 20px}.mobile-nav a{display:block;padding:12px 4px;border-bottom:1px solid var(--line);font-weight:600}
@media(min-width:1000px){.site-nav{display:block}.search-mini{display:flex}.nav-toggle{display:none}.mobile-nav{display:none!important}}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:700;border:2px solid transparent;cursor:pointer;font:inherit;font-weight:700;line-height:1.2;transition:.15s;white-space:nowrap}.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.btn-primary:hover{filter:brightness(1.08)}.btn-secondary{background:var(--accent-2);color:#fff;border-color:var(--accent-2)}.btn-outline{background:transparent;color:var(--accent);border-color:var(--accent)}.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}.btn-light{background:#fff;color:var(--ink);border-color:#fff}.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}.btn-sm{padding:8px 16px;font-size:.9rem}.btn-lg{padding:16px 30px;font-size:1.05rem}
/* layout helpers */
.grid{display:grid;gap:20px}.grid-2{grid-template-columns:1fr}.grid-3{grid-template-columns:1fr}.grid-4{grid-template-columns:1fr 1fr}@media(min-width:720px){.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}
.section-head{max-width:760px;margin-bottom:28px}.kicker{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.15s}.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.card-body{padding:18px}.card h3{margin-bottom:8px}.card p{color:var(--muted);font-size:.95rem;margin:0}.card-media{display:block}.meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:.8rem;color:var(--muted);margin-bottom:8px}.tag{background:var(--soft);color:var(--accent);padding:2px 8px;border-radius:6px;font-weight:600}
.ph{background:repeating-linear-gradient(135deg,#EDE7DB 0 12px,#F4EFE5 12px 24px);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:.85rem;width:100%;border-radius:0}.ph span{background:rgba(255,255,255,.8);padding:6px 12px;border-radius:999px}.media{object-fit:cover;width:100%}
.badge{display:inline-block;font-size:.72rem;font-weight:700;padding:2px 8px;border-radius:6px;letter-spacing:.03em;text-transform:uppercase}.badge-ok{background:#E3F1E5;color:var(--ok)}.badge-warn{background:#FBEEDB;color:var(--warn)}.badge-pending{background:#EEF0ED;color:var(--pending)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:0 0 16px;font-size:.85rem;color:var(--muted)}.breadcrumb li+li:before{content:"›";margin-right:6px}.breadcrumb a{color:var(--accent)}
.cta-band{background:var(--accent);color:#fff;padding:48px 0}.cta-band .wrap{display:flex;flex-direction:column;gap:20px}.cta-band h2{color:#fff}.cta-band p{color:rgba(255,255,255,.85);margin:0}.cta-actions{display:flex;gap:12px;flex-wrap:wrap}@media(min-width:800px){.cta-band .wrap{flex-direction:row;align-items:center;justify-content:space-between}}
/* prose */
.prose{max-width:760px}.prose h2{font-size:1.5rem;margin-top:1.6em}.prose h3{margin-top:1.3em}.prose ul,.prose ol{padding-left:1.3em}.prose li{margin:.3em 0}.prose blockquote{border-left:4px solid var(--accent);margin:1.2em 0;padding:.4em 1em;background:var(--soft);border-radius:0 10px 10px 0}.prose img{border-radius:12px}.prose iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:12px}.table-wrap{overflow-x:auto;margin:1em 0}table{border-collapse:collapse;width:100%;font-size:.92rem}th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}th{background:var(--soft)}
.callout{border:1px solid var(--line);border-left:5px solid var(--accent);background:#fff;border-radius:12px;padding:16px 18px;margin:16px 0}.callout-warn{border-left-color:var(--warn);background:#FFFAF2}.callout h4{margin:0 0 6px;color:var(--ink);text-transform:none;letter-spacing:0}
/* forms */
form .field{margin-bottom:14px}label{display:block;font-weight:600;font-size:.92rem;margin-bottom:6px}.req{color:var(--err)}input[type=text],input[type=tel],input[type=email],input[type=search],input[type=number],select,textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff;color:var(--ink)}input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}.hint{display:block;color:var(--muted);font-size:.8rem;margin-top:4px}.error{display:block;color:var(--err);font-size:.82rem;margin-top:4px}.has-error input,.has-error select,.has-error textarea{border-color:var(--err)}.field-check label{display:flex;gap:10px;align-items:flex-start;font-weight:400}.field-check input{margin-top:4px}.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.form-row{display:grid;gap:0 16px}@media(min-width:640px){.form-row{grid-template-columns:1fr 1fr}}.alert{padding:12px 14px;border-radius:10px;margin-bottom:14px;font-size:.92rem}.alert-error{background:#FDECEC;color:var(--err)}.alert-ok{background:#E3F1E5;color:var(--ok)}.form-msg:not(:empty){margin-top:8px;font-size:.88rem}
.newsletter .nl-row{display:flex;gap:8px}.newsletter input{flex:1;padding:10px 12px}
/* footer */
.site-footer{background:#1B1F1A;color:#D9DDD6;margin-top:40px;padding:48px 0 24px}.site-footer h4{color:#fff}.footer-grid{display:grid;gap:28px}@media(min-width:800px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.3fr}}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin:6px 0}.footer-links a{color:#D9DDD6}.site-footer .muted{color:#9AA097}.footer-bottom{border-top:1px solid #2C312B;margin-top:32px;padding-top:16px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:.82rem;color:#9AA097}.footer-bottom a{color:#9AA097}.site-footer .newsletter input{background:#2A2F29;border-color:#3A403A;color:#fff}
/* mobile bar + AI */
.mobile-bar{position:fixed;bottom:0;left:0;right:0;z-index:60;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 20px rgba(0,0,0,.08)}.mobile-bar a,.mobile-bar button{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 4px 10px;font-size:.72rem;font-weight:700;border:0;background:transparent;color:var(--ink);font-family:inherit;cursor:pointer}.mobile-bar span{font-size:1.1rem;color:var(--accent)}body:has(.mobile-bar){padding-bottom:64px}@media(min-width:1000px){.mobile-bar{display:none}body:has(.mobile-bar){padding-bottom:0}}
.ai-fab{position:fixed;right:16px;bottom:80px;z-index:60;background:var(--ink);color:#fff;border:0;border-radius:999px;padding:12px 18px;font-weight:700;font-family:inherit;cursor:pointer;box-shadow:var(--shadow)}@media(min-width:1000px){.ai-fab{bottom:24px}}
.ai-panel{position:fixed;right:12px;bottom:140px;z-index:70;width:min(420px,calc(100vw - 24px));max-height:70vh;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,.2);display:flex;flex-direction:column;overflow:hidden}@media(min-width:1000px){.ai-panel{bottom:80px}}.ai-head{display:flex;gap:10px;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line)}.ai-head .small{flex:1}.ai-close{border:0;background:transparent;font-size:1.4rem;cursor:pointer}.ai-log{flex:1;overflow:auto;padding:12px;display:flex;flex-direction:column;gap:8px;font-size:.92rem}.ai-msg{padding:10px 12px;border-radius:12px;max-width:92%}.ai-msg.ai{background:var(--soft);align-self:flex-start}.ai-msg.user{background:var(--ink);color:#fff;align-self:flex-end}.ai-block{margin:8px 0}.ai-block b{display:block;font-size:.72rem;letter-spacing:.1em;color:var(--accent)}.ai-block.WARNING b{color:var(--warn)}.ai-links a{display:inline-block;margin:4px 6px 0 0;font-size:.85rem;color:var(--accent);text-decoration:underline}.ai-next{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.ai-options{display:flex;flex-wrap:wrap;gap:6px;padding:0 12px 8px}.ai-options button{border:1px solid var(--accent);background:#fff;color:var(--accent);border-radius:999px;padding:6px 12px;font:inherit;font-size:.85rem;cursor:pointer}.ai-form{display:flex;gap:6px;padding:10px 12px;border-top:1px solid var(--line)}.ai-form input{flex:1;padding:10px 12px}
/* hero generic */
.hero{position:relative;overflow:hidden}.hero .wrap{position:relative;z-index:1}
.stats{display:grid;gap:16px;grid-template-columns:1fr 1fr}@media(min-width:720px){.stats{grid-template-columns:repeat(4,1fr)}}.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}.stat b{display:block;font-size:1.5rem}
.pill-list{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0}.pill-list a{display:inline-block;padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;font-weight:600;font-size:.9rem}.pill-list a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.list-plain{list-style:none;padding:0;margin:0}.list-plain li{padding:12px 0;border-bottom:1px solid var(--line)}
.two-col{display:grid;gap:32px}@media(min-width:900px){.two-col{grid-template-columns:1.6fr 1fr}}.aside{position:sticky;top:84px;align-self:start}
.search-result{padding:14px 0;border-bottom:1px solid var(--line)}.search-result .kind{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);font-weight:700}
.toc-steps{counter-reset:s;list-style:none;padding:0}.toc-steps li{counter-increment:s;padding:14px 0 14px 48px;position:relative;border-bottom:1px solid var(--line)}.toc-steps li:before{content:counter(s);position:absolute;left:0;top:12px;width:34px;height:34px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.timeline{list-style:none;padding:0;margin:0;border-left:2px solid var(--line)}.timeline li{position:relative;padding:0 0 32px 28px}.timeline li:before{content:"";position:absolute;left:-7px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--accent)}.timeline .year{font-weight:800;font-size:1.4rem;letter-spacing:-.02em}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}