:root{
  --olive-50:#F3F5EA; --olive-100:#E6EAD3; --olive-200:#CDD5AE; --olive-300:#AEB985;
  --olive-500:#7E8C4F; --olive-700:#55613A; --olive-900:#2F3722;
  --paper:#FBFBF6; --ink:#2A2F1F; --muted:#6D7358;
  --warm:#B3743F; --warm-50:#F8EEE2;
  --serif:"Lora",Georgia,"Times New Roman",serif;
  --sans:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --hanzi:"Noto Serif SC","Songti SC","SimSun",serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--olive-50);color:var(--ink);font-family:var(--sans);font-size:16.5px;line-height:1.6}
a{color:inherit}
:focus-visible{outline:3px solid var(--olive-500);outline-offset:3px;border-radius:6px}

.wrap{max-width:760px;margin:0 auto;padding:0 18px 80px}

/* HERO */
.hero{padding:56px 0 34px;text-align:center}
.hero .eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--olive-700);font-weight:600}
.hero .eyebrow::before,.hero .eyebrow::after{content:"";width:28px;height:1px;background:var(--olive-300)}
.hero h1{font-family:var(--serif);font-weight:600;font-size:clamp(28px,5.6vw,42px);max-width:700px;margin:20px auto 14px;line-height:1.18;color:var(--olive-900);letter-spacing:-.01em;text-wrap:balance}
.hero h1 .nb{white-space:nowrap}
.hero .latin{font-family:var(--serif);font-style:italic;color:var(--olive-500);font-size:19px;margin:0 0 10px}
.hero .note{color:var(--muted);font-size:14px;margin:0}

@media(max-width:560px){
  .hero .eyebrow{white-space:nowrap;font-size:min(12.5px,2.85vw);letter-spacing:.08em;gap:7px}
  .hero .eyebrow::before,.hero .eyebrow::after{width:16px}
}

/* INDEX */
.index{background:var(--paper);border:1px solid var(--olive-200);border-radius:22px;padding:18px 16px 14px;margin:26px 0 40px;box-shadow:0 1px 0 rgba(47,55,34,.04),0 12px 30px -18px rgba(47,55,34,.25)}
.index h2{margin:0 0 12px;font-family:var(--serif);font-size:15px;font-weight:600;color:var(--olive-700);letter-spacing:.06em;text-transform:uppercase;display:flex;align-items:center;gap:10px}
.index h2 b{background:var(--olive-500);color:#fff;font-family:var(--sans);border-radius:999px;padding:2px 10px;font-size:12.5px;letter-spacing:0}
.chips{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
@media(min-width:560px){.chips{grid-template-columns:repeat(5,1fr)}}
.chip{display:flex;align-items:center;gap:9px;text-decoration:none;background:var(--olive-50);border:1px solid var(--olive-100);border-radius:14px;padding:7px 9px 7px 7px;transition:background .15s,border-color .15s,transform .15s}
.chip:hover{background:var(--olive-100);border-color:var(--olive-200);transform:translateY(-1px)}
.chip img{width:38px;height:38px;border-radius:10px;object-fit:cover;flex:none;border:2px solid #fff;box-shadow:0 0 0 1px var(--olive-200)}
.chip span{display:flex;flex-direction:column;line-height:1.15;font-size:13.5px;font-weight:500;color:var(--olive-900)}
.chip span b{font-size:10.5px;color:var(--olive-500);letter-spacing:.12em;font-weight:600}
@media(min-width:560px){.chip{flex-direction:column;align-items:center;text-align:center;padding:10px 6px}.chip img{width:52px;height:52px;border-radius:50%}.chip span{align-items:center}}

/* HERB CARD */
.herb{background:var(--paper);border-radius:26px;padding:26px 22px 22px;margin:0 0 34px;border:1px solid var(--olive-200);box-shadow:0 1px 0 rgba(47,55,34,.04),0 18px 40px -24px rgba(47,55,34,.3);scroll-margin-top:18px;position:relative;overflow:hidden}
.herb::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:linear-gradient(var(--olive-300),var(--olive-500))}
@media(min-width:640px){.herb{padding:32px 34px 28px}}
.herb-head{display:flex;gap:16px;align-items:flex-start;margin-bottom:18px}
.num{font-family:var(--serif);font-weight:700;font-size:44px;line-height:1;color:var(--olive-500);letter-spacing:-.03em;flex:none;padding-top:2px}
.num small{font-size:14px;font-weight:500;color:var(--olive-300);letter-spacing:0;margin-left:2px}
.titles h2{margin:0;font-family:var(--serif);font-weight:700;font-size:clamp(26px,5.5vw,34px);line-height:1.1;color:var(--olive-900);text-transform:uppercase;letter-spacing:.01em}
.titles h2 .sub{display:block;font-family:var(--sans);text-transform:none;font-weight:400;font-size:15px;color:var(--muted);letter-spacing:0;margin-top:4px}
.cn{margin:8px 0 0;display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.hanzi{font-family:var(--hanzi);font-size:22px;color:var(--olive-700);font-weight:600}
.dot{color:var(--olive-300)}
.pinyin{font-family:var(--serif);font-style:italic;color:var(--muted);font-size:17px}

.photo{margin:0 0 16px;position:relative}
.photo img{display:block;width:100%;max-height:420px;object-fit:cover;border-radius:18px;border:1px solid var(--olive-200);background:#fff}
.photo figcaption{position:absolute;left:12px;bottom:12px;background:rgba(251,251,246,.92);color:var(--olive-700);font-size:12px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;padding:5px 10px;border-radius:999px;backdrop-filter:blur(4px)}

.lbl{display:inline-block;font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--olive-700);background:var(--olive-100);border-radius:6px;padding:2px 8px;margin-right:8px;vertical-align:2px}
.part{margin:0 0 6px;font-size:15.5px;color:var(--ink);background:var(--olive-50);border:1px dashed var(--olive-200);border-radius:12px;padding:10px 14px}

.blk{padding-top:18px;margin-top:16px;border-top:1px solid var(--olive-100)}
.blk h3{margin:0 0 10px;font-family:var(--serif);font-size:19px;font-weight:600;color:var(--olive-900);display:flex;align-items:center;gap:10px}
.blk h3 i{font-style:normal;font-family:var(--sans);width:26px;height:26px;border-radius:50%;background:var(--olive-500);color:#fff;font-size:13px;font-weight:600;display:inline-grid;place-items:center;flex:none}
.blk h4{margin:14px 0 6px;font-size:12.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--olive-500)}
.blk ul{margin:0;padding:0;list-style:none}
.blk li{position:relative;padding-left:22px;margin:0 0 7px}
.blk li::before{content:"";position:absolute;left:4px;top:.68em;width:8px;height:8px;border-radius:50%;background:var(--olive-300)}
ul.cases li::before{background:transparent;border:2px solid var(--olive-300);width:6px;height:6px;top:.62em}
ul.use li::before{border-radius:2px;transform:rotate(45deg);width:7px;height:7px}
.example{margin:0;background:var(--olive-50);border-left:3px solid var(--olive-300);border-radius:0 12px 12px 0;padding:12px 14px;font-size:15.5px}

.warn{margin:20px 0 0;display:flex;gap:10px;align-items:flex-start;background:var(--warm-50);color:#6B4423;border:1px solid #EAD6C0;border-radius:14px;padding:12px 14px;font-size:14px;font-weight:500;line-height:1.5}
.warn::before{content:"!";flex:none;width:22px;height:22px;border-radius:50%;background:var(--warm);color:#fff;display:grid;place-items:center;font-weight:700;font-size:13px;margin-top:1px}

/* CĂN ĐỀU 2 BÊN cho phần nội dung chạy chữ */
.blk li,.blk p,.example,.part,.warn,.titles h2 .sub{
  text-align:justify;text-justify:inter-word;
  overflow-wrap:break-word;word-break:normal;
}
.hero .byline{font-family:var(--serif);font-style:italic;color:var(--olive-700);font-size:15px;margin:20px 0 0;display:flex;align-items:center;justify-content:center;gap:10px}
.hero .byline::before,.hero .byline::after{content:"";width:22px;height:1px;background:var(--olive-300)}
.foot{text-align:center;color:var(--muted);font-size:13px;padding-top:10px;border-top:1px solid var(--olive-200)}
.foot a{color:var(--olive-700);font-weight:500}

.totop{position:fixed;right:16px;bottom:16px;width:44px;height:44px;border-radius:50%;background:var(--olive-700);color:#fff;display:grid;place-items:center;text-decoration:none;box-shadow:0 8px 20px -8px rgba(47,55,34,.6);font-size:18px}
@media print{
  body{background:#fff;font-size:13px} .wrap{max-width:none;padding:0}
  .herb{box-shadow:none;break-inside:avoid;page-break-inside:avoid;margin-bottom:16px}
  .totop,.index{display:none} .photo img{max-height:260px}
}

/* ============ THÀNH PHẦN CHUNG CHO CẢ TRANG ============ */
.topbar{position:sticky;top:0;z-index:40;background:rgba(243,245,234,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--olive-200)}
.topbar .in{max-width:760px;margin:0 auto;padding:9px 18px;display:flex;align-items:center;gap:12px}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;font-family:var(--serif);font-weight:600;color:var(--olive-900);font-size:15px;white-space:nowrap}
.brand .mark{width:26px;height:26px;border-radius:50%;background:var(--olive-500);color:#fff;display:grid;place-items:center;font-size:13px;flex:none}
.topbar nav{margin-left:auto;display:flex;gap:6px}
.topbar nav a{text-decoration:none;font-size:13px;font-weight:500;color:var(--olive-700);padding:5px 11px;border-radius:999px;border:1px solid transparent;white-space:nowrap}
.topbar nav a:hover{background:var(--olive-100)}
.topbar nav a[aria-current]{background:var(--olive-500);color:#fff}
@media(max-width:430px){.brand span.full{display:none}.topbar .in{gap:8px;padding:8px 14px}.topbar nav a{padding:5px 9px;font-size:12.5px}}

/* Ô TÌM KIẾM */
.search{position:relative;margin:0 0 30px}
.search input{width:100%;font:inherit;font-size:16px;padding:15px 46px 15px 46px;border-radius:16px;border:1px solid var(--olive-200);background:var(--paper);color:var(--ink);box-shadow:0 1px 0 rgba(47,55,34,.04),0 12px 30px -22px rgba(47,55,34,.4)}
.search input::placeholder{color:#9AA184}
.search input:focus{outline:none;border-color:var(--olive-500);box-shadow:0 0 0 3px var(--olive-100)}
.search .ico{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--olive-500);font-size:17px;pointer-events:none}
.search .clr{position:absolute;right:10px;top:50%;transform:translateY(-50%);border:0;background:var(--olive-100);color:var(--olive-700);width:26px;height:26px;border-radius:50%;cursor:pointer;font-size:15px;line-height:1;display:none}
.search .clr.on{display:block}
.hits{margin:10px 0 0;padding:0;list-style:none;background:var(--paper);border:1px solid var(--olive-200);border-radius:16px;overflow:hidden;display:none}
.hits.on{display:block}
.hits li+li{border-top:1px solid var(--olive-100)}
.hits a{display:flex;gap:12px;align-items:center;padding:11px 14px;text-decoration:none}
.hits a:hover,.hits a:focus-visible{background:var(--olive-50)}
.hits .n{font-family:var(--serif);font-weight:700;color:var(--olive-500);font-size:15px;min-width:30px}
.hits .nm{font-weight:600;color:var(--olive-900);font-size:15px;line-height:1.25}
.hits .gr{display:block;font-weight:400;color:var(--muted);font-size:12.5px;margin-top:2px}
.hits .empty{padding:15px;color:var(--muted);font-size:14.5px;text-align:center}

/* THẺ NHÓM Ở TRANG CHỦ */
.groups{display:grid;gap:14px;margin:0 0 40px}
@media(min-width:620px){.groups{grid-template-columns:1fr 1fr}}
.gcard{display:flex;gap:14px;align-items:center;text-decoration:none;background:var(--paper);border:1px solid var(--olive-200);border-radius:20px;padding:14px;box-shadow:0 1px 0 rgba(47,55,34,.04),0 14px 34px -26px rgba(47,55,34,.45);transition:transform .14s,border-color .14s,box-shadow .14s}
.gcard:hover{transform:translateY(-2px);border-color:var(--olive-300);box-shadow:0 1px 0 rgba(47,55,34,.04),0 18px 38px -24px rgba(47,55,34,.5)}
.gcard img{width:76px;height:76px;border-radius:16px;object-fit:cover;flex:none;border:2px solid #fff;box-shadow:0 0 0 1px var(--olive-200)}
.gcard .tx{min-width:0}
.gcard .kk{font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--olive-500)}
.gcard h3{margin:3px 0 4px;font-family:var(--serif);font-size:18px;font-weight:600;color:var(--olive-900);line-height:1.2}
.gcard p{margin:0;font-size:13px;color:var(--muted);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ĐIỀU HƯỚNG TRƯỚC / SAU */
.pager{display:flex;gap:10px;align-items:stretch;margin:6px 0 28px}
.pager a,.pager span{flex:1;text-decoration:none;border:1px solid var(--olive-200);background:var(--paper);border-radius:16px;padding:11px 13px;font-size:13px;color:var(--olive-900);line-height:1.3;display:flex;flex-direction:column;gap:2px;min-width:0}
.pager span{opacity:.4}
.pager a:hover{border-color:var(--olive-300);background:var(--olive-50)}
.pager b{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--olive-500)}
.pager .nx{text-align:right;align-items:flex-end}
.pager em{font-style:normal;font-weight:500;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* BẢNG TRA CỨU A–Z */
.az{background:var(--paper);border:1px solid var(--olive-200);border-radius:20px;overflow:hidden;margin:0 0 34px}
.az .row{display:flex;gap:12px;align-items:center;padding:11px 14px;text-decoration:none}
.az .row+.row{border-top:1px solid var(--olive-100)}
.az .row:hover{background:var(--olive-50)}
.az .row img{width:44px;height:44px;border-radius:11px;object-fit:cover;flex:none;border:2px solid #fff;box-shadow:0 0 0 1px var(--olive-200);background:var(--olive-100)}
.az .row .nm{font-weight:600;color:var(--olive-900);font-size:15.5px;line-height:1.2}
.az .row .mt{display:block;font-weight:400;color:var(--muted);font-size:12.5px;margin-top:2px}
.az .row .n{margin-left:auto;font-family:var(--serif);font-weight:700;color:var(--olive-300);font-size:16px;flex:none}
.az .row.hide{display:none}
.azhead{margin:26px 0 10px;font-family:var(--serif);font-size:15px;font-weight:600;color:var(--olive-700);letter-spacing:.06em;text-transform:uppercase}

/* PHẦN BỔ SUNG TRONG THẺ VỊ TRÀ */
.intro{margin:0 0 4px;font-size:15.5px;color:var(--muted);line-height:1.6;text-align:justify}
.credit{margin:6px 0 0;font-size:11.5px;color:#8A906F;line-height:1.45;text-align:justify}
.credit a{color:var(--olive-700)}
.blk.care h3 i{background:var(--warm)}
.noimg{display:flex;align-items:center;justify-content:center;gap:9px;height:150px;border-radius:18px;border:1px dashed var(--olive-200);background:var(--olive-50);color:var(--muted);font-size:13.5px;margin:0 0 16px}

.foot .by{display:block;margin-top:6px;font-family:var(--serif);font-style:italic;color:var(--olive-700);font-size:14px}

/* phần trong ngoặc của tên vị — xuống dòng riêng ở ô mục lục */
.chip span i{font-style:normal;font-size:11.5px;font-weight:400;color:var(--muted);margin-top:1px;line-height:1.2}
@media(min-width:560px){.chip span i{font-size:11px}}

/* ===== NHẢY ĐÚNG VỊ KHI CHẠM VÀO MỤC LỤC =====
   1. Chừa chỗ cho thanh dính trên cùng, nếu không thẻ bị thanh che mất phần đầu.
   2. Khung ảnh cao cố định -> trang không xô lệch khi ảnh tải xong,
      nên chạm vào vị nào là dừng đúng vị đó. */
.herb{scroll-margin-top:62px}
.photo img{height:clamp(210px,54vw,420px)}

/* ===== KHỐI NGUỒN ẢNH Ở CUỐI TRANG =====
   Mặc định đóng, chỉ là một dòng nhỏ; mở ra mới hiện danh sách. */
.src{margin:0 0 26px;border:1px solid var(--olive-200);border-radius:16px;background:var(--paper);overflow:hidden}
.src summary{cursor:pointer;list-style:none;padding:11px 15px;font-size:12.5px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;color:var(--olive-700);display:flex;align-items:center;gap:9px}
.src summary::-webkit-details-marker{display:none}
.src summary::after{content:"+";margin-left:auto;font-size:16px;font-weight:400;color:var(--olive-500);line-height:1}
.src[open] summary::after{content:"–"}
.src summary:hover{background:var(--olive-50)}
.src summary b{background:var(--olive-100);color:var(--olive-700);border-radius:999px;
  padding:2px 9px;font-size:11px;letter-spacing:0;font-weight:600}
.src ol{margin:0;padding:4px 15px 0;list-style:none;border-top:1px solid var(--olive-100)}
.src li{display:flex;gap:10px;align-items:baseline;padding:7px 0;font-size:12.5px;line-height:1.45;color:var(--muted)}
.src li+li{border-top:1px solid var(--olive-50)}
.src li b{font-family:var(--serif);color:var(--olive-300);font-size:13px;flex:none;min-width:22px}
.src li span{color:var(--olive-900);font-weight:500;flex:none;min-width:104px}
.src li em{font-style:normal;word-break:break-word}
.src li a{color:var(--olive-700);white-space:nowrap}
.src .note{margin:8px 0 0;padding:9px 15px 13px;font-size:11.5px;color:#8A906F;border-top:1px solid var(--olive-50)}
@media(max-width:520px){.src li{flex-wrap:wrap}.src li span{min-width:0}.src li em{flex:1 1 100%;padding-left:32px}}

/* nhóm mà cả 10 ảnh đều lấy trên Internet — chỉ một dòng gọn */
.srcone{margin:0 0 26px;padding:11px 15px;border:1px solid var(--olive-200);border-radius:16px;
  background:var(--paper);font-size:12.5px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;color:var(--olive-700)}

/* ===== LƯU Ý CHUNG Ở TRANG CHỦ ===== */
.notice{display:flex;gap:12px;align-items:flex-start;margin:0 0 22px;
  background:var(--warm-50);color:#6B4423;border:1px solid #EAD6C0;border-radius:16px;
  padding:14px 16px;font-size:14.5px;font-weight:500;line-height:1.55;text-align:justify;
  box-shadow:0 1px 0 rgba(47,55,34,.03)}
.notice::before{content:"!";flex:none;width:24px;height:24px;border-radius:50%;
  background:var(--warm);color:#fff;display:grid;place-items:center;font-weight:700;
  font-size:14px;margin-top:1px}
@media(max-width:520px){.notice{font-size:14px;padding:13px 14px;text-align:left}}