:root{
  --paper:#f5f2e9;--surface:#fffefa;--surface-soft:#fbfaf6;--ink:#29372c;--muted:#7c8378;
  --green:#405d43;--green-soft:#e9ede4;--sage:#eef0e7;--sand:#f4efe2;--line:#e9e5db;
  --gold:#b99659;--shadow:0 10px 28px rgba(59,66,48,.075);--sidebar:232px;--topbar:72px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.6 "Noto Sans CJK SC","Microsoft YaHei",sans-serif}
button,input{font:inherit}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid #819477;outline-offset:2px}
.app-shell{min-height:100vh}
.sidebar{position:fixed;z-index:20;inset:0 auto 0 0;width:var(--sidebar);padding:27px 16px 20px;background:var(--surface-soft);border-right:1px solid var(--line);display:flex;flex-direction:column}
.brand{display:flex;align-items:center;gap:11px;padding:0 8px 35px;color:inherit;text-decoration:none}
.brand-mark{width:40px;height:40px;border:1px solid #c7cfbd;border-radius:50%;background:#eef0e7;display:grid;place-items:center;color:var(--green);font:20px "Noto Serif CJK SC","Songti SC",serif}
.brand strong{font:600 17px "Noto Serif CJK SC","Songti SC",serif;letter-spacing:1px}
.side-label{font-size:10px;color:#999b90;letter-spacing:1.3px;padding:0 12px 11px}
.main-nav{display:grid;gap:5px}
.nav-item{height:46px;border:0;background:transparent;border-radius:11px;text-align:left;padding:0 13px;color:#737b70;display:flex;align-items:center;gap:13px;cursor:pointer;transition:background .16s,color .16s}
.nav-item span{font-size:18px;width:20px;text-align:center}.nav-item:hover,.nav-item.active{background:var(--green-soft);color:var(--green);font-weight:700}
.nav-item i{margin-left:auto;font-style:normal;background:#dce4d6;color:var(--green);border-radius:20px;padding:1px 7px;font-size:10px}
.sidebar-bottom{margin-top:auto;padding:14px 10px 5px;border-top:1px solid var(--line);color:#8f9387;font-size:10px}
.main-area{margin-left:var(--sidebar);min-width:0}
.topbar{height:var(--topbar);position:sticky;z-index:15;top:0;background:rgba(251,250,246,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 clamp(24px,3vw,48px)}
.breadcrumb{display:flex;align-items:center;gap:10px;color:#8c9084;font-size:12px;white-space:nowrap}.breadcrumb b{font-weight:400;color:#c7c4b9}.breadcrumb strong{color:var(--ink);font-weight:600}
.top-actions{display:flex;align-items:center;gap:18px}.global-search{height:42px;width:min(355px,32vw);display:flex;align-items:center;gap:9px;padding:0 13px;background:#f3f1e8;border:1px solid #e7e3d9;border-radius:13px;color:#778071}.global-search span{font-size:18px}.global-search input{min-width:0;flex:1;border:0;outline:0;background:transparent;color:var(--ink);font-size:12px}.global-search kbd{white-space:nowrap;color:#95988d;font-size:9px;border:1px solid #dedbd0;border-radius:5px;padding:2px 5px;background:#faf9f4}
.avatar{width:34px;height:34px;border:1px solid #d7ddcf;border-radius:50%;background:#e8ede3;color:var(--green);cursor:pointer}
.view{max-width:1320px;margin:0 auto;padding:28px clamp(24px,3vw,48px) 72px}
.page-heading{display:flex;justify-content:space-between;align-items:flex-end;margin:0 0 21px;gap:20px}.page-heading h1{font:500 28px "Noto Serif CJK SC","Songti SC",serif;letter-spacing:.5px;margin:0}.page-heading p{margin:6px 0 0;color:var(--muted);font-size:12px}
.eyebrow{font-size:10px;letter-spacing:1.2px;color:#8b927f}.text-link{border:0;background:transparent;color:var(--green);font-size:12px;cursor:pointer;padding:6px 2px}.text-link:hover{text-decoration:underline}
.button-primary,.button-soft{border:0;border-radius:10px;padding:10px 15px;cursor:pointer;font-size:12px}.button-primary{background:var(--green);color:#fff}.button-primary:hover{background:#4c6b4e}.button-soft{background:var(--green-soft);color:var(--green)}
.button-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.grid{display:grid;gap:15px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.panel,.stat-card,.herb-card,.study-card{background:var(--surface);border:1px solid #eeeae0;border-radius:16px;box-shadow:0 5px 18px rgba(58,62,44,.035)}
.stat-card{padding:16px 18px;display:flex;align-items:center;justify-content:space-between}.stat-card small{display:block;color:#92958a;font-size:10px;margin-bottom:6px}.stat-card strong{font:500 22px "Noto Serif CJK SC","Songti SC",serif}.stat-symbol{width:36px;height:36px;border-radius:50%;background:var(--sage);display:grid;place-items:center;color:var(--green);font-size:17px}
.section-head{display:flex;align-items:center;justify-content:space-between;margin:27px 0 13px}.section-head h2{font:600 18px "Noto Serif CJK SC","Songti SC",serif;margin:0}.section-head span{color:#92958a;font-size:10px}
.hero-card{position:relative;min-height:300px;overflow:hidden;border-radius:20px;background:#e7e5d6;display:flex;align-items:center;margin:0 0 20px;box-shadow:var(--shadow)}.hero-card>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 45%}.hero-wash{position:absolute;inset:0;background:linear-gradient(90deg,rgba(245,242,228,.98),rgba(245,242,228,.92) 34%,rgba(245,242,228,.05) 76%)}.hero-copy{position:relative;z-index:1;max-width:540px;padding:32px 38px}.hero-copy h2{font:500 34px "Noto Serif CJK SC","Songti SC",serif;margin:8px 0}.hero-copy p{font-size:12px;color:#667160;line-height:1.8;margin:6px 0}.hero-copy .button-primary{margin-top:12px}
.herb-card{overflow:hidden;cursor:pointer;transition:transform .16s,box-shadow .16s}.herb-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.herb-card>img{display:block;width:100%;height:auto;aspect-ratio:16 / 9;object-fit:contain;background:#eeeae0}.herb-card-content{padding:14px 16px}.herb-titleline{display:flex;align-items:center;justify-content:space-between}.herb-titleline h3{font:600 19px "Noto Serif CJK SC","Songti SC",serif;margin:0}.herb-card-content p{font-size:11px;color:#777f72;margin:7px 0 10px}.herb-meta{border-top:1px solid #f0ede6;padding-top:9px;display:flex;justify-content:space-between;color:#6f7d6b;font-size:10px}
.global-search-results{position:absolute;top:57px;right:75px;width:min(355px,32vw);background:var(--surface);border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow);padding:6px;z-index:18}.global-search-results[hidden]{display:none}.global-search-results button{display:flex;width:100%;align-items:center;justify-content:space-between;text-align:left;border:0;background:transparent;padding:10px;border-radius:8px;cursor:pointer}.global-search-results button:hover{background:var(--green-soft)}.global-search-results small{color:#858b7f;font-size:10px}.global-search-empty{padding:12px 10px;color:var(--ink);font-size:12px}.global-search-empty small{display:block;margin-top:5px}
.search-box{height:52px;display:flex;align-items:center;gap:11px;max-width:760px;background:var(--surface);border:1px solid #e0e2d6;border-radius:13px;padding:0 15px;box-shadow:0 5px 18px rgba(51,64,45,.04)}.search-box>span{font-size:19px;color:#7a8774}.search-box input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font-size:13px}.search-box button{border:0;background:transparent;color:#7c846f;cursor:pointer}.chip-row{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0 18px}.chip{border:0;border-radius:20px;background:#e8ece2;color:#73806f;padding:8px 14px;font-size:11px;cursor:pointer}.chip.active{background:var(--green);color:white}.search-results{max-width:760px;display:grid;gap:10px}.result-card{background:var(--surface);border:1px solid #eeebe2;border-radius:14px;padding:11px;display:grid;grid-template-columns:80px minmax(0,1fr) auto;gap:14px;align-items:center;cursor:pointer}.result-card:hover{border-color:#bdc9b7}.result-card img{width:80px;height:72px;border-radius:9px;object-fit:cover}.result-card h3{font:600 17px "Noto Serif CJK SC","Songti SC",serif;margin:0 0 4px}.result-card p{font-size:10px;color:#85897e;margin:3px 0}.result-arrow{font-size:20px;color:#87917d;padding:0 8px}.empty-state{padding:30px;background:#edf0e8;border-radius:15px;text-align:center;color:#697666;max-width:760px}.empty-state strong{font:600 16px "Noto Serif CJK SC","Songti SC",serif}.empty-state p{font-size:11px;line-height:1.8}
.category-row{display:flex;gap:12px;flex-wrap:wrap}.category-tile{min-width:220px;flex:1;background:var(--surface);padding:17px;border:1px solid #efebe2;border-radius:13px;cursor:pointer;text-align:left}.category-tile:hover{border-color:#afbea8}.category-tile strong{display:block;font-size:13px;margin-bottom:5px}.category-tile small{color:#8a9083;font-size:10px}
/* Herb detail desktop layout */
.detail-page{max-width:1320px}.detail-actions{display:flex;justify-content:space-between;align-items:center;margin:0 0 12px}.detail-title-row{display:flex;align-items:center;gap:15px;flex-wrap:wrap;margin:0 0 15px}.detail-title-row h1{font:600 30px "Noto Serif CJK SC","Songti SC",serif;margin:0}.detail-title-row .pinyin{font-size:12px;color:#81877c}.taxonomy-pill{border-radius:18px;background:var(--green-soft);color:var(--green);font-size:10px;padding:6px 11px}
.detail-top{container-type:inline-size;display:grid;grid-template-columns:minmax(360px,42%) minmax(0,1fr);min-width:0;background:var(--surface);border:1px solid #eeeae0;border-radius:19px;overflow:hidden;box-shadow:var(--shadow)}.detail-image{position:relative;min-height:282px;background:#eae6d9;min-width:0}.detail-image img{position:absolute;width:100%;height:100%;inset:0;object-fit:cover;object-position:center}.detail-copy{min-width:0;padding:24px 29px;display:flex;flex-direction:column;justify-content:center;overflow-wrap:anywhere}.detail-copy h2{font:500 22px "Noto Serif CJK SC","Songti SC",serif;margin:0 0 4px}.detail-copy .identity-note{font-size:12px;color:#747c70;margin:0 0 10px}.detail-facts{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.detail-fact{display:grid;grid-template-columns:58px minmax(0,1fr);gap:8px;padding:9px 0;border-top:1px solid #f0ede5;font-size:11px;line-height:1.65}.detail-fact span:first-child{color:#888e82}.detail-fact span:last-child{color:#435143;overflow-wrap:anywhere}.detail-fact.wide{grid-column:1/-1}
.chapter-nav{position:sticky;z-index:10;top:var(--topbar);display:flex;gap:0;overflow:auto;white-space:nowrap;background:rgba(233,237,228,.96);backdrop-filter:blur(8px);border-radius:12px;margin:14px 0 20px;padding:0 10px;scrollbar-width:none}.chapter-nav::-webkit-scrollbar{display:none}.chapter-nav a{padding:12px 14px;color:#727b70;text-decoration:none;font-size:11px;border-bottom:2px solid transparent}.chapter-nav a.active,.chapter-nav a:hover{color:var(--green);font-weight:700;border-bottom-color:var(--green)}
.article-layout{display:grid;grid-template-columns:minmax(0,790px) 210px;gap:22px;align-items:start}.article-main{min-width:0}.article-aside{position:sticky;top:calc(var(--topbar) + 74px);display:grid;gap:14px}.toc-card,.related-card{background:var(--surface);border:1px solid #eeeae0;border-radius:15px;padding:17px}.toc-card h3{font:600 15px "Noto Serif CJK SC","Songti SC",serif;margin:0 0 9px}.toc-list{display:grid;gap:3px}.toc-list a{display:flex;align-items:center;min-height:35px;padding:0 8px;border-left:3px solid transparent;color:#737c70;text-decoration:none;font-size:11px}.toc-list a.active{border-left-color:var(--green);color:var(--green);font-weight:700}.related-card{background:#e8ede3}.related-card strong{font:600 16px "Noto Serif CJK SC","Songti SC",serif;display:block;margin:6px 0}.related-card p{font-size:10px;color:#7e8778;margin:4px 0}
.content-section{scroll-margin-top:145px;margin:0 0 23px}.content-section>header{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:0 0 10px}.content-section>header h2{font:600 19px "Noto Serif CJK SC","Songti SC",serif;margin:0}.content-section>header span{font-size:10px;color:#888e82}.content-card{background:var(--surface);border:1px solid #eeeae0;border-radius:15px;padding:17px}.source-grid{display:grid;grid-template-columns:.82fr .9fr 1.25fr;gap:10px}.source-card{min-height:110px;padding:14px;border-radius:11px;background:#eef0e7}.source-card:nth-child(2){background:#f4efe2}.source-card:nth-child(3){background:#f8f7f1}.source-card small,.nature-card small,.classic-card small{font-size:10px;color:#858c80;display:block;margin-bottom:8px}.source-card strong{font:600 16px "Noto Serif CJK SC","Songti SC",serif;display:block;margin-bottom:5px}.source-card p{font-size:10px;color:#6f786c;margin:0;line-height:1.65}.source-observations{display:flex;gap:7px;flex-wrap:wrap;margin-top:11px}.observation-chip{background:#f2f3ed;color:#647360;border-radius:16px;padding:5px 9px;font-size:10px}
.nature-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:12px}.nature-card{padding:16px;background:#fffefa;border:1px solid #eeeae0;border-radius:14px}.nature-tags{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.nature-tags span{padding:7px 13px;border-radius:18px;background:#e8ede3;color:var(--green);font-size:11px}.nature-notes{background:#e8ede3;border-radius:14px;padding:16px}.nature-notes h3{font:600 15px "Noto Serif CJK SC","Songti SC",serif;margin:0 0 9px}.nature-notes p{font-size:11px;color:#63705f;margin:6px 0;line-height:1.75}
.function-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.function-card{background:var(--surface);border:1px solid #eeeae0;border-radius:14px;padding:15px;min-height:119px}.function-heading{display:flex;align-items:center;gap:9px;margin-bottom:8px}.function-number{width:25px;height:25px;border-radius:50%;display:grid;place-items:center;background:#e8ede3;color:var(--green);font-size:10px}.function-heading h3{font:600 15px "Noto Serif CJK SC","Songti SC",serif;margin:0}.function-card p{font-size:11px;color:#72796f;line-height:1.7;margin:5px 0}.function-card button{border:0;background:transparent;color:var(--green);font-size:10px;padding:3px 0;cursor:pointer}
.classic-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.classic-card{background:#f0eadc;border-radius:13px;padding:15px}.classic-card h3{font:600 17px "Noto Serif CJK SC","Songti SC",serif;margin:0 0 8px}.classic-card blockquote{margin:0;color:#4c584b;font:13px/1.9 "Noto Serif CJK SC","Songti SC",serif}.classic-card p{font-size:10px;color:#777f72;line-height:1.7;margin:10px 0 0}.classic-note{padding:13px 15px;background:#f8f6ef;border-left:3px solid #bda26e;border-radius:8px;font-size:11px;line-height:1.8;color:#5d6859;margin-top:10px}.source-links{display:flex;gap:8px;flex-wrap:wrap;margin-top:11px}.source-links a{font-size:10px;color:var(--green);text-decoration:none}.source-links a:hover{text-decoration:underline}
.formula-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.formula-card{padding:15px;background:var(--surface);border:1px solid #eeeae0;border-radius:13px}.formula-card h3{font:600 16px "Noto Serif CJK SC","Songti SC",serif;margin:0 0 3px}.formula-card small{color:#878d82;font-size:10px}.formula-partners{font-size:10px;color:#75806f;margin:11px 0 7px}.formula-card p{font-size:11px;color:#4f5d4e;line-height:1.75;margin:0}.comparison-table{width:100%;border-collapse:collapse;font-size:11px}.comparison-table th,.comparison-table td{text-align:left;padding:10px 9px;border-bottom:1px solid #efede6;vertical-align:top;line-height:1.7}.comparison-table th{font-weight:600;color:var(--green)}.comparison-table td:first-child{width:23%;color:#82897d}.quiz-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.quiz-card{padding:16px;background:#e8ede3;border-radius:13px}.quiz-card small{display:block;color:#808a7b;font-size:10px;margin-bottom:8px}.quiz-card strong{font:600 15px "Noto Serif CJK SC","Songti SC",serif;display:block;margin-bottom:10px}.quiz-card .answer{display:none;color:#52624f;font-size:11px;line-height:1.8}.quiz-card.revealed .answer{display:block}.quiz-card button{border:0;background:transparent;color:var(--green);padding:0;font-size:10px;cursor:pointer}
.study-card{max-width:780px;padding:22px}.study-prompt{background:#edf0e8;border-radius:13px;padding:24px;text-align:center;margin-bottom:16px}.study-prompt h2{font:500 26px "Noto Serif CJK SC","Songti SC",serif;margin:8px 0}.answer-box{padding:15px;border:1px dashed #d9ddcf;border-radius:12px;color:#65745f;line-height:1.9;font-size:12px;margin-bottom:16px}.profile-panel{padding:23px;max-width:760px}.profile-panel h2{font:500 21px "Noto Serif CJK SC","Songti SC",serif;margin:0 0 10px}.profile-row{padding:13px 0;border-bottom:1px solid #efede6;display:flex;justify-content:space-between;color:#72796d;font-size:12px}.profile-row strong{color:#394a3a;font-weight:600}.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);background:#344e3a;color:white;padding:11px 16px;border-radius:10px;box-shadow:var(--shadow);font-size:12px;z-index:30}
.mobile-nav{display:none}
@container (max-width:760px){.detail-top{grid-template-columns:1fr}.detail-image{height:300px;min-height:0}.detail-copy{padding:20px}.detail-facts{grid-template-columns:1fr}}
@media(max-width:1279px){.article-layout{grid-template-columns:minmax(0,1fr)}.article-aside{display:none}.chapter-nav{top:var(--topbar)}.view{max-width:1120px}.detail-top{grid-template-columns:minmax(320px,42%) minmax(0,1fr)}}
@media(max-width:1023px){:root{--sidebar:72px}.sidebar{padding:18px 10px}.brand{justify-content:center;padding:0 0 24px}.brand>span:last-child,.side-label,.sidebar-bottom{display:none}.brand-mark{width:40px}.nav-item{justify-content:center;padding:0}.nav-item span{width:auto}.nav-item{font-size:0;gap:0}.nav-item i{position:absolute;margin:25px 0 0 27px;padding:0 5px;font-size:9px}.main-nav{gap:8px}.topbar{padding:0 22px}.view{padding:24px 22px 60px}.detail-top{grid-template-columns:minmax(280px,42%) minmax(0,1fr)}.detail-copy{padding:19px}.detail-facts{grid-template-columns:1fr 1fr}}
@media(max-width:760px){:root{--sidebar:0px;--topbar:60px}.sidebar{display:none}.main-area{margin-left:0}.topbar{padding:0 15px}.breadcrumb span,.breadcrumb b{display:none}.global-search{width:min(270px,52vw);height:38px}.global-search kbd{display:none}.top-actions{gap:10px}.avatar{width:31px;height:31px}.view{padding:20px 15px 90px}.mobile-nav{display:flex;position:fixed;z-index:25;inset:auto 0 0;background:rgba(251,250,246,.97);border-top:1px solid var(--line);justify-content:space-around;padding:8px 5px calc(8px + env(safe-area-inset-bottom));backdrop-filter:blur(12px)}.mobile-nav button{border:0;background:transparent;color:#95978c;font-size:9px;display:grid;gap:2px;justify-items:center;cursor:pointer;min-width:47px}.mobile-nav button span{font-size:18px}.mobile-nav button.active{color:var(--green);font-weight:700}.grid-3{grid-template-columns:1fr}.grid-2,.function-grid,.formula-grid,.classic-grid,.quiz-grid{grid-template-columns:1fr}.hero-card{min-height:300px;align-items:flex-end}.hero-card>img{object-position:61% center}.hero-wash{background:linear-gradient(0deg,rgba(245,242,228,.98) 0%,rgba(245,242,228,.9) 55%,rgba(245,242,228,.02) 100%)}.hero-copy{padding:18px 20px 22px}.hero-copy h2{font-size:27px}.herb-card{display:grid;grid-template-columns:112px minmax(0,1fr);min-height:126px}.herb-card>img{height:100%;aspect-ratio:auto;min-height:126px;object-fit:contain}.herb-card-content{padding:13px 12px}.detail-title-row{gap:9px}.detail-title-row h1{font-size:27px}.detail-title-row .pinyin{font-size:10px}.detail-top{grid-template-columns:1fr}.detail-image{height:235px;min-height:0}.detail-copy{padding:16px}.detail-facts{grid-template-columns:1fr}.detail-fact.wide{grid-column:auto}.chapter-nav{margin:10px 0 17px;top:var(--topbar);border-radius:0;margin-left:-15px;margin-right:-15px;padding:0 8px}.chapter-nav a{padding:11px 12px}.content-section{scroll-margin-top:115px}.source-grid,.nature-layout{grid-template-columns:1fr}.source-card{min-height:unset}.comparison-table{font-size:10px}.comparison-table th,.comparison-table td{padding:8px 5px}.page-heading h1{font-size:24px}}

.plain-button{border:0;background:transparent;color:var(--green);font:inherit;cursor:pointer;padding:0}

/* Focused herb-learning tabs: one topic per view and a full-ratio specimen image */
.herb-detail-v2{max-width:1260px;margin:0 auto}
.herb-detail-v2 .detail-actions{margin-bottom:8px}
.herb-detail-v2 .detail-title-row{margin-bottom:12px}
.detail-gallery{margin:0 0 14px}
.detail-gallery-frame{width:100%;height:auto;aspect-ratio:16 / 9;min-height:0;display:grid;place-items:center;overflow:hidden;border:1px solid #e9e4d8;border-radius:18px;background:#eeeade}
.specimen-image{display:block;width:100%;height:100%;object-fit:contain;object-position:center}
.gallery-toolbar{height:42px;display:flex;align-items:center;justify-content:flex-end;gap:8px;padding:0 5px;color:#778071}
.gallery-caption{margin-right:auto;font-size:11px;color:#777f72}
.gallery-toolbar button{border:0;background:transparent;color:#637260;padding:7px 12px;border-radius:9px;font-size:11px;cursor:pointer}
.gallery-toolbar button:hover{background:#e9ede4;color:var(--green)}
.herb-tabs-wrap{position:sticky;top:var(--topbar);z-index:12;margin:0 0 14px;padding:5px 0;background:rgba(245,242,233,.94);backdrop-filter:blur(10px)}
.herb-tabs{display:flex;align-items:center;gap:4px;overflow-x:auto;padding:4px;border:1px solid #e8e4da;border-radius:13px;background:#f0f0e8;scrollbar-width:thin}
.herb-tab{flex:1 0 auto;min-height:42px;padding:0 18px;border:0;border-radius:9px;background:transparent;color:#737c70;font-size:12px;white-space:nowrap;cursor:pointer}
.herb-tab:hover{color:var(--green);background:rgba(255,255,255,.55)}
.herb-tab.active{background:var(--surface);color:var(--green);font-weight:700;box-shadow:0 2px 8px rgba(46,59,41,.06)}
.tab-panel{min-height:205px;margin:0 0 26px;padding:22px 25px;background:var(--surface);border:1px solid #eeeae0;border-radius:17px;box-shadow:0 8px 22px rgba(59,66,48,.035)}
.learning-empty{margin:4px 0;padding:16px 18px;border-radius:12px;background:#f6f4ed;color:#7a806f;font-size:13px;line-height:1.8}.learning-empty-inline{color:#96998c;font-size:11px}
.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:0 0 13px}
.panel-heading small{font-size:10px;color:#8b9184;letter-spacing:.08em}
.panel-heading h2{font:600 21px "Noto Serif CJK SC","Songti SC",serif;margin:2px 0 0}
.panel-heading>span{font-size:10px;color:#8a9084}
.recognize-summary{max-width:780px;margin:4px 0 18px;color:#586657;font:16px/1.8 "Noto Serif CJK SC","Songti SC",serif}
.memory-cues{display:flex;flex-wrap:wrap;gap:9px;margin:0 0 18px}
.memory-cue{display:inline-flex;align-items:center;gap:9px;min-height:39px;padding:5px 15px 5px 6px;border-radius:22px;background:#f2f1e9;color:#566454;font-size:11px}
.memory-cue i{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#e2e9dc;color:var(--green);font-size:10px;font-style:normal;font-weight:700}
.nature-layout{grid-template-columns:minmax(220px,.75fr) minmax(0,1.25fr);align-items:stretch}
.channel-label{margin-top:16px!important}
.learning-notes{display:grid;gap:8px}
.learning-note{padding:12px 15px;border-radius:11px;background:#eef0e7}
.learning-note strong{color:#465b45;font:600 13px "Noto Serif CJK SC","Songti SC",serif}
.learning-note p{margin:5px 0 0;color:#6c7769;font-size:11px;line-height:1.75}
.effect-line{display:flex;gap:12px;align-items:baseline;margin-top:12px;padding:12px 14px;border-top:1px solid #efede6;color:#6b7668;font-size:11px}
.effect-line strong{color:var(--green);white-space:nowrap}
.tab-panel .classic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.tab-panel .formula-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.tab-panel .quiz-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.herb-image-dialog{width:min(94vw,1440px);max-width:none;max-height:94vh;padding:42px 18px 18px;border:1px solid #dcd7ca;border-radius:16px;background:#f5f2e9;box-shadow:0 22px 90px rgba(23,31,22,.4)}
.herb-image-dialog::backdrop{background:rgba(23,29,23,.78);backdrop-filter:blur(3px)}
.dialog-specimen-image{display:block;width:100%;height:auto;max-height:calc(94vh - 80px);object-fit:contain;margin:auto}
.dialog-close{position:absolute;top:9px;right:12px;width:31px;height:31px;border:0;border-radius:50%;background:#e8ede3;color:var(--green);font-size:22px;line-height:1;cursor:pointer}
@media(max-width:900px){.tab-panel .formula-grid,.tab-panel .classic-grid{grid-template-columns:1fr}.tab-panel .quiz-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.herb-tab{padding:0 13px}}
@media(max-width:760px){.herb-detail-v2{max-width:none}.detail-gallery-frame{height:auto;aspect-ratio:16 / 9;min-height:0;border-radius:13px}.gallery-toolbar{height:38px;gap:1px}.gallery-caption{font-size:9px}.gallery-toolbar button{padding:6px 8px;font-size:9px}.herb-tabs-wrap{margin-left:-15px;margin-right:-15px;padding:5px 15px}.herb-tabs{gap:2px}.herb-tab{min-height:38px;padding:0 12px;font-size:10px}.tab-panel{padding:17px 15px;min-height:180px}.panel-heading h2{font-size:18px}.panel-heading>span{font-size:9px}.recognize-summary{font-size:14px}.memory-cues{gap:6px}.memory-cue{font-size:10px}.nature-layout,.tab-panel .quiz-grid{grid-template-columns:1fr}.herb-image-dialog{width:96vw;padding:40px 8px 8px}}

/* Student-facing copy: concrete plant facts, short explanations, and separate recall questions. */
.origin-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0 22px}
.origin-facts>div{background:#f6f3e9;border:1px solid #e8e2d4;border-radius:12px;padding:16px 18px;min-width:0}
.origin-facts>div:last-child:nth-child(odd){grid-column:1/-1}
.origin-facts small{display:block;color:#78816e;font-size:12px;margin-bottom:8px}
.origin-facts strong{display:block;color:#263a2d;font-family:Georgia,"Noto Serif SC",serif;font-size:18px;line-height:1.5}
.origin-facts span,.origin-facts p{display:block;margin:7px 0 0;color:#62695f;font-size:14px;line-height:1.75}
.recognize-subhead{font-size:16px;color:#354b3a;margin:22px 0 11px}
.recognize-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;list-style:none;padding:0;margin:0}
.recognize-points li{padding:13px 15px;background:#edf0e7;border-radius:10px;color:#49594a;font-size:14px;line-height:1.7}
.plain-note{font-size:13px;line-height:1.7;color:#697164;margin:12px 0 0}
.nature-card>.nature-tags{margin:8px 0 16px}
.effect-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.effect-card{padding:15px 17px;background:#fbfaf6;border:1px solid #ece8dd;border-radius:11px}
.effect-card strong{font-size:15px;color:#314638}
.effect-card p{font-size:14px;line-height:1.75;color:#62695f;margin:8px 0 0}
@media(max-width:760px){.origin-facts{grid-template-columns:1fr}.origin-facts>div:last-child:nth-child(odd){grid-column:auto}.recognize-points,.effect-grid{grid-template-columns:1fr}}

.gallery-fit-note{font-size:10px;color:#8b9085;padding:0 10px}
.safety-note{margin:18px 0 8px;padding:14px 18px;border:1px solid #d7a16d;border-left:4px solid #ad613c;border-radius:10px;background:#fff3e7;color:#663e2d}.safety-note strong{display:block;margin-bottom:4px;font-size:14px}.safety-note p{margin:0;font-size:14px;line-height:1.75}