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/* HanViet 2.0 — unified visual system derived from the supplied references */
:root{--red:#e3121b;--dark:#0a1231;--muted:#4e5870;--line:#e7eaf2;--soft:#fff2f0;--shadow:0 3px 12px rgba(20,38,67,.055);--radius:16px}
body{font-family:system-ui,-apple-system,'Segoe UI',Arial,'Noto Sans SC',sans-serif;background:#fff;color:var(--dark);font-size:14px;line-height:1.55}
.container{width:min(1170px,calc(100% - 56px))}h1,h2,h3,h4{font-weight:800;letter-spacing:-.55px}h1{font-size:clamp(30px,3.25vw,43px)}h2{font-size:22px}a,button{transition:color .18s,background .18s,border-color .18s,transform .18s,box-shadow .18s}
.site-header{height:68px;box-shadow:0 1px 7px #09133210}.header-inner{height:68px}.brand-mark{font-size:48px;color:#bd0618;display:inline-flex;align-items:center;justify-content:center;width:52px;transform:scaleX(1.2);font-weight:800}.brand b{font-size:18px}.brand small{line-height:1.25}.main-nav a{font-size:13px}.search-toggle{display:grid;place-items:center;padding:8px}.hv-icon{display:inline-block;vertical-align:middle;flex:none}.hero{background:linear-gradient(100deg,#fff7f6,#fff5f7 57%,#fce3ea);overflow:hidden}.hero:before{content:'竹';font-family:serif;font-size:142px;left:-20px;top:-72px;color:#8abf5b52;transform:rotate(-22deg)}.hero:after{content:'✿';position:absolute;right:3%;top:-57px;font-size:124px;line-height:1;color:#f39aaf6b;pointer-events:none}.hero-home .hero-inner{min-height:278px}.hero-home .hero-inner>img{height:278px}.hero-home h1{font-size:clamp(34px,4vw,48px);color:#27263b}.hero-home h2{font-size:30px;color:#c9232a}.hero-category .hero-inner,.hero-category .hero-inner>img{min-height:190px;height:190px}.hero-detail .hero-inner,.hero-detail .hero-inner>img{min-height:173px;height:173px}.hero-inner>img{object-fit:cover;object-position:center;mask-image:linear-gradient(90deg,transparent,#000 17%);width:52%}.hero-badge{background:linear-gradient(145deg,#ff6d66,#e20b20);box-shadow:inset 0 1px 3px #ffffff88,0 6px 14px #d4292b18;border-radius:18px;font-size:34px}.hero-category h1{font-size:37px}.hero-detail h1{font-size:34px}.hero-inner p{font-size:14px}.hero-title{gap:19px}.breadcrumbs{font-size:13px;padding-top:13px}.breadcrumbs a{font-weight:500}.breadcrumbs a:hover{color:var(--red)}
.panel{border:1px solid #e7ebf3;box-shadow:var(--shadow);border-radius:15px}.space-section{margin-top:27px;margin-bottom:26px}.padded{padding:18px}.section-heading{border-bottom:0;margin-bottom:13px;padding:0}.section-heading h2,.bar-title{font-size:22px;border-left:5px solid var(--red);padding-left:13px;line-height:1.23}.section-heading a{font-weight:500}.section-heading a:hover{color:var(--red)}
.quick-menu{margin-top:0;padding:21px 12px 22px;border-radius:0 0 16px 16px;box-shadow:0 3px 10px #151e3410}.quick-menu a{padding:4px 12px}.quick-menu a:hover{transform:translateY(-3px);color:#d40e1f}.quick-icon{height:73px;display:flex;align-items:center;justify-content:center;color:#d92a35}.quick-menu a:nth-child(2) .quick-icon{color:#af3123}.quick-menu a:nth-child(3) .quick-icon{color:#ec4d52}.quick-menu a:nth-child(4) .quick-icon{color:#c05828}.quick-menu a:nth-child(5) .quick-icon{color:#d36a32}.quick-menu a:nth-child(6) .quick-icon{color:#3b83d1}.quick-icon svg{height:55px;width:55px;stroke-width:1.65}.quick-menu b{font-size:17px}.quick-menu small{max-width:140px;margin:3px auto 0;color:#36445b;line-height:1.4}
.topic-grid{gap:13px}.topic-tile{background:linear-gradient(145deg,#fff1eb,#fff9f7);border:1px solid #f5e9e8;border-radius:12px}.topic-tile img{height:110px;object-fit:cover;background:#fff3ee}.topic-tile b{padding-top:6px;font-size:16px}.topic-tile small{color:#384152;padding-bottom:11px}.hsk-grid{gap:12px;margin-top:16px}.hsk-card{min-height:148px;border:1px solid #ffffffa0;box-shadow:0 2px 6px #11233a0a}.hsk-card:hover{transform:translateY(-4px);box-shadow:0 8px 20px #1a29421a}.hsk-pagoda{font-size:59px;line-height:1}.hsk-card small{max-width:140px;font-size:12px}.lesson-row{padding:10px 5px}.lesson-row>img{border-radius:9px;object-fit:cover}.lesson-copy strong{font-size:15px;font-weight:750}.lesson-copy small{color:#354057}.lesson-row .arrow{font-size:26px;color:#0e1835}.lesson-row:hover{background:#fff9f9}.twin-cols>div{border-right:1px solid #ebedf4;padding:0 18px 0 0}.twin-cols>div:last-child{border-right:0;padding-right:0;padding-left:8px}
.filters{padding:13px 15px;gap:11px;border-radius:14px}.filters select{min-width:150px}.filters .btn{white-space:nowrap}.search-field{min-width:170px}.search-field:focus-within{outline:2px solid #ed989d;outline-offset:1px}.archive-layout{grid-template-columns:minmax(0,1fr) 340px;align-items:start}.archive-layout .panel.padded{padding:17px}.archive-layout aside .lesson-row>img{height:60px;width:70px}.archive-layout aside .lesson-copy small{display:none}.archive-layout aside .lesson-row{gap:8px}.archive-layout aside .level{display:none}.tip-card{background:linear-gradient(150deg,#fff8ef,#ffe9e6)}.tip-card img{height:180px}.pagination .page-numbers{min-width:34px;height:34px;font-weight:600}.pagination .current{background:var(--red)}
.detail-grid,.detail-layout{gap:17px}.detail-layout{grid-template-columns:minmax(0,1fr) 340px}.detail-layout .main-column>.panel{margin-bottom:13px}.detail-layout aside .panel{padding:17px}.bar-title{margin-bottom:15px}.word-info{gap:15px}.word-info img{height:200px}.word-info th{background:#edf5fd}.hanzi{font-family:'Noto Serif SC','Microsoft YaHei',serif;font-size:32px}.hanzi-grid{background-color:#fff;outline:1px solid #dce3ef;outline-offset:-1px}.writing-overview .hanzi-grid{max-height:190px}.pinyin-tag{background:#ffe5e8;font-size:20px}.tagline{gap:9px}.pill{font-size:13px}.speak{color:#ee121c;font-size:22px}.speak:hover{color:#bd0008}.writing-overview{grid-template-columns:1fr 1.25fr}.pronunciation>span{font-weight:650}.example-row{padding:10px 6px;border-radius:8px}.example-row:nth-child(odd){background:#fff0f1}.related-card{background:linear-gradient(#fff0e9,#fff)}.related-card img{height:105px}.soft-card{background:#eaf4ff}.soft-card.pink{background:#ffe9ed}.numbered{scroll-margin-top:90px}.numbered h2 span,.knowledge-section h2 span{box-shadow:0 2px 6px #df273028}.numbered .grammar-example b{font-family:'Noto Sans SC',system-ui,sans-serif}.toc{padding:10px 5px;border-radius:7px}.toc:hover{background:#fff0f0}.stages{font-weight:700;font-size:20px}.knowledge-section{scroll-margin-top:90px}.knowledge-section h2{font-size:23px}.knowledge-section p{font-size:14px}.intro-note{font-weight:500}.feature-image{height:240px}.knowledge-hero{height:280px}.transcript-line{margin:6px 0}.transcript-line.playing{outline:2px solid #f7464b;box-shadow:0 0 0 4px #ef263515}.transcript-content strong{line-height:1.45}.reading-controls{gap:15px}.practice-links .soft-card{cursor:pointer}.practice-links .soft-card:hover{background:#ffecf0}.quiz-options button:hover{border-color:#ec3035}.quiz-result{min-height:1.4em}.vocab-mini{min-height:44px}.scenery-footer{height:90px;background-size:cover;background-position:center 52%;margin-top:25px}.site-footer{background:linear-gradient(90deg,#8c0b21,#b00f26 52%,#810b21)}.footer-inner{min-height:70px}.footer-inner nav{gap:8px}.footer-inner nav a{font-size:11px}.footer-inner nav a:hover{text-decoration:underline}.foot-brand .brand-mark{font-size:37px}
@media(max-width:1050px){.container{width:min(100% - 36px,1170px)}.main-nav{gap:12px}.brand b{font-size:15px}.brand-mark{width:38px;font-size:39px}.archive-layout,.detail-layout{grid-template-columns:minmax(0,1fr) 300px}.hero-category h1{font-size:32px}.hero-inner>img{width:45%}}
@media(max-width:800px){.container{width:min(100% - 28px,680px)}.site-header,.header-inner{height:62px}.header-inner{gap:9px}.hamburger{display:block;order:3}.main-nav{display:none;position:absolute;left:0;right:0;top:62px;height:auto;background:#fff;box-shadow:0 12px 18px #09233b20;flex-direction:column;gap:0;padding:10px 18px}.main-nav.open{display:flex}.main-nav a{font-size:15px;width:100%;height:auto;padding:11px 8px}.header-search{top:62px}.quick-menu{grid-template-columns:repeat(3,1fr)}.quick-icon svg{width:46px;height:46px}.hero-home .hero-inner{min-height:245px}.hero-home .hero-inner>img{height:245px}.hero-category .hero-inner,.hero-category .hero-inner>img{min-height:170px;height:170px}.hero-inner>img{position:absolute;right:0;opacity:.40;width:57%;top:0;bottom:0}.hero-inner>div{max-width:80%}.hero-category h1{font-size:29px}.hero-detail h1{font-size:27px}.topic-grid{grid-template-columns:repeat(3,1fr)}.hsk-grid{grid-template-columns:repeat(3,1fr)}.archive-layout,.detail-layout,.twin-cols,.detail-grid{grid-template-columns:1fr}.twin-cols>div{border:0;padding:0}.twin-cols>div:last-child{padding:0}.archive-layout aside,.detail-layout aside{display:grid;grid-template-columns:1fr 1fr}.archive-layout aside .panel:last-child{grid-column:auto}.footer-inner{flex-wrap:wrap;padding:13px 0}.footer-inner nav{width:100%;justify-content:center}.foot-brand{margin:0}}
@media(max-width:520px){body{font-size:14px}.container{width:calc(100% - 24px)}.brand b{font-size:13px}.brand small{font-size:9px}.brand-mark{font-size:33px;width:31px}.search-toggle{padding:5px}.hero:before{font-size:100px}.hero-home .hero-inner{min-height:225px}.hero-home h1{font-size:29px}.hero-home h2{font-size:20px}.hero-inner>div{max-width:100%}.hero-inner>img{opacity:.18;width:85%}.hero-title{gap:8px}.hero-badge{width:51px;height:51px;font-size:22px}.hero-category h1{font-size:24px}.hero-detail h1{font-size:24px}.hero p{font-size:12px}.quick-menu{grid-template-columns:repeat(2,1fr);gap:8px}.quick-menu a{border:0;padding:6px}.quick-icon{height:51px}.quick-icon svg{height:43px;width:43px}.quick-menu b{font-size:14px}.quick-menu small{font-size:11px}.topic-grid,.hsk-grid{grid-template-columns:repeat(2,1fr)}.topic-tile img{height:90px}.filters{flex-wrap:wrap}.filters .search-field{flex-basis:100%}.filters select{min-width:0;flex:1}.filters .btn{flex:1}.archive-layout aside,.detail-layout aside{display:flex}.word-info,.writing-overview{grid-template-columns:1fr}.writing-overview .hanzi-grid{width:180px}.feature-image{height:185px}.section-heading h2,.bar-title{font-size:19px}.footer-inner nav{gap:5px}.footer-inner nav a{padding-right:7px}.grammar-example em{display:none}.practice-links{grid-template-columns:1fr}.hero-detail .hero-inner,.hero-detail .hero-inner>img{min-height:155px;height:155px}.twin-cols>div{padding:0}.topic-tabs{justify-content:flex-start}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
/* Archive sections specific to the learning mode */
.vocab-feature-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}.vocab-feature{border:1px solid #e4e8f1;border-radius:12px;overflow:hidden;background:linear-gradient(#fff7f3,#f9fbff);text-align:center;position:relative;min-width:0}.vocab-feature a{display:flex;flex-direction:column;align-items:center;padding-bottom:13px}.vocab-feature img{height:105px;width:100%;object-fit:cover;background:#fff2e8}.vocab-feature strong{font-size:24px;font-family:'Noto Serif SC',serif;line-height:1.5}.vocab-feature span{font-size:13px}.vocab-feature small{color:var(--muted);font-size:13px}.vocab-feature .speak{position:absolute;right:4px;top:5px;background:#ffffffdc;border-radius:50%;width:33px;height:33px;font-size:18px}.vocab-feature:hover{border-color:#ff8e96;box-shadow:var(--shadow);transform:translateY(-2px)}.archive-utility-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;margin-top:22px}.archive-utility-grid .hsk-grid{grid-template-columns:repeat(3,1fr);gap:8px}.archive-utility-grid .hsk-card{min-height:98px}.archive-utility-grid .hsk-pagoda{display:none}.archive-utility-grid .bar-title{margin-bottom:14px}.alphabet-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:8px;margin-top:21px}.alphabet-grid a{display:grid;place-items:center;height:41px;border:1px solid #cfd5e1;border-radius:8px;color:#d51620;font-weight:700}.alphabet-grid a:hover{background:#fce6e8;border-color:#e82931}.featured-lesson{display:grid;grid-template-columns:38% 1fr;gap:19px;padding:13px;align-items:center}.featured-lesson img{width:100%;height:180px;object-fit:cover;border-radius:11px}.featured-lesson h2{font-size:25px;margin-bottom:6px}.featured-lesson p{margin:8px 0 15px}.featured-lesson .btn{display:inline-block;margin-top:6px}.knowledge-feature-wrap{display:grid;grid-template-columns:1.3fr .9fr;gap:17px}.knowledge-feature{display:grid;grid-template-columns:42% 1fr;gap:14px;margin-top:14px;align-items:center}.knowledge-feature>img{height:170px;object-fit:cover;border-radius:10px;width:100%}.knowledge-feature strong{display:block;font-size:18px;line-height:1.35}.knowledge-feature small{display:block;font-size:13px;margin:8px 0 14px}.knowledge-category{display:flex;align-items:center;gap:13px;border-bottom:1px solid #e9edf5;padding:8px 4px;font-weight:650}.knowledge-category .hv-icon:first-child{color:#e1212b}.knowledge-category span{flex:1}.knowledge-category:last-child{border:0}
@media(max-width:800px){.vocab-feature-grid{grid-template-columns:repeat(3,1fr)}.archive-utility-grid,.knowledge-feature-wrap{grid-template-columns:1fr}}
@media(max-width:520px){.vocab-feature-grid{grid-template-columns:repeat(2,1fr)}.vocab-feature img{height:120px}.alphabet-grid{grid-template-columns:repeat(6,1fr)}.featured-lesson{grid-template-columns:1fr}.featured-lesson img{height:185px}.knowledge-feature{grid-template-columns:1fr}.knowledge-feature>img{height:170px}}

/* HanViet 3.3: focus, content rhythm and daily practice */
:root{--hv-card-shadow:0 10px 28px rgba(31,42,69,.075)}
.site-header{box-shadow:0 2px 18px rgba(30,38,63,.07)}
.panel,.topic-tile,.vocab-feature{transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease}
.topic-tile:hover,.panel:hover{box-shadow:var(--hv-card-shadow)}
:where(a,button,input,select,textarea):focus-visible{outline:3px solid #e43749;outline-offset:3px}
.hv-practice-section .htct-widget,.hv-learning-section .htct-widget{max-width:none;margin:0;border-radius:18px;box-shadow:var(--hv-card-shadow)}
.hv-practice-section .htct-flash-card{min-height:200px;height:auto;padding:30px 16px}
.hv-practice-section .htct-flash-card strong{line-height:1.5}
.hv-section-caption{font-size:14px;color:#5a6577}
.hv-learning-section .htct-my-stats span{flex:1;min-width:150px}
@media(max-width:520px){.hv-practice-section .htct-widget-actions{flex-wrap:wrap}.hv-practice-section .htct-widget-actions button{flex:1}.hv-section-caption{display:none}}