:root{--bg:#fffaf3;--paper:#fff;--ink:#2f261f;--muted:#74675e;--gold:#9b6818;--gold2:#e4c98f;--brown:#5b3a28;--green:#315b4c;--rose:#f8ece8;--soft:#f7efe4;--line:#eadac4;--shadow:0 16px 42px rgba(80,54,35,.12);--radius:20px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;line-height:1.7}img{max-width:100%;display:block}a{color:inherit}.wrap{max-width:1180px;margin:auto;padding:0 22px}.skip{position:absolute;left:-9999px}.skip:focus{left:14px;top:14px;z-index:999;background:#fff;padding:10px 14px;border-radius:10px}
nav{position:sticky;top:0;z-index:80;background:rgba(255,250,243,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{text-decoration:none;font-family:Georgia,serif;color:var(--brown);font-weight:800;letter-spacing:.03em}.links{display:flex;gap:14px;flex-wrap:wrap;align-items:center}.links a{text-decoration:none;font-weight:750;font-size:14px}.links a:focus-visible,.btn:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid #f0bf57;outline-offset:3px}
.hero{position:relative;border-bottom:1px solid var(--line);overflow:hidden;background:radial-gradient(circle at 82% 20%,#fff7d7 0,transparent 35%),linear-gradient(135deg,#fffaf3 0%,#f8ead5 100%)}.hero-grid{min-height:690px;display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:34px}.hero-copy{padding:64px 0}.eyebrow{display:inline-flex;padding:7px 12px;border-radius:999px;background:#fff5d8;border:1px solid #e5cb95;color:#73501d;font-size:13px;font-weight:850}.hero h1{font-family:Georgia,serif;color:var(--brown);font-size:56px;line-height:1.08;margin:18px 0 14px}.hero .lead{font-size:21px;color:#5f5147;max-width:590px}.hero-portrait{align-self:end;display:flex;justify-content:center;position:relative}.hero-portrait img{width:min(100%,520px);height:610px;object-fit:cover;object-position:center 38%;border-radius:34px 34px 0 0;box-shadow:0 22px 55px rgba(76,49,30,.18)}.hero-caption{position:absolute;left:50%;transform:translateX(-50%);bottom:22px;width:min(92%,440px);background:rgba(255,255,255,.93);border:1px solid rgba(219,188,127,.7);border-radius:18px;padding:13px 16px;text-align:center;box-shadow:0 10px 30px rgba(50,33,22,.12)}.hero-caption strong{display:block;color:var(--brown);font-family:Georgia,serif;font-size:20px}.hero-caption span{font-size:13px;color:var(--muted)}
.buttons{display:flex;gap:10px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;border:1.5px solid var(--gold);border-radius:999px;padding:11px 17px;font-weight:850;background:#fff;color:var(--brown);transition:.2s}.btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(91,63,40,.12)}.btn.primary{background:var(--gold);color:#fff}.btn.green{background:var(--green);border-color:var(--green);color:#fff}
section{padding:68px 0}.white{background:#fff}.soft{background:var(--soft)}.title{font-family:Georgia,serif;color:var(--brown);font-size:40px;text-align:center;margin:0 0 8px}.intro{text-align:center;max-width:880px;margin:0 auto 34px;color:var(--muted);font-size:18px}.quote{background:var(--rose);border-left:5px solid var(--gold);border-radius:14px;padding:22px;font-family:Georgia,serif;font-size:21px}.quick,.grid3,.social-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.quick{grid-template-columns:repeat(4,1fr)}.qcard,.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:21px;box-shadow:var(--shadow)}.qcard b{display:block;color:var(--brown);font-size:17px;margin:8px 0 3px}.qcard:hover,.card:hover{border-color:#d9bb7e}.quick a{text-decoration:none}.card h3{color:var(--brown);margin-top:0}.badge{display:inline-block;border-radius:999px;background:#f0ddb1;color:#6c4b20;padding:4px 10px;font-size:12px;font-weight:800}.small{font-size:14px;color:var(--muted)}.notice{background:#fff7e7;border:1px solid #e9ca8f;border-left:5px solid var(--gold);border-radius:14px;padding:16px 18px;margin-top:22px}.resource{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.book{display:grid;grid-template-columns:245px 1fr;gap:28px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:var(--shadow);margin-bottom:22px}.book-cover{border-radius:12px;box-shadow:0 10px 24px rgba(0,0,0,.13)}.book h3{font-family:Georgia,serif;color:var(--brown);font-size:31px;margin:4px 0 8px}.meta{color:var(--gold);font-weight:850}.tags{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0 18px}.tag{background:#fff4d8;border:1px solid #ead3a1;border-radius:999px;padding:5px 10px;font-size:13px;font-weight:750}.searchbox{max-width:850px;margin:0 auto 24px}.searchbox input{width:100%;font-size:18px;padding:15px 17px;border:1px solid var(--line);border-radius:14px;background:#fff}.hide{display:none!important}.source-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.source-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.source-card h3{margin-top:0;color:var(--brown)}.source-card .url{font-size:13px;color:var(--muted);word-break:break-all}.breadcrumbs{font-size:14px;color:var(--muted);margin:20px 0}.page-head{padding:58px 0 36px;background:linear-gradient(135deg,#fff8ec,#f7ead5);border-bottom:1px solid var(--line)}.page-head h1{font-family:Georgia,serif;color:var(--brown);font-size:48px;line-height:1.15;margin:0 0 10px}.page-head p{max-width:820px;color:var(--muted);font-size:18px}.contact{background:#5b3d2e;color:#fff;text-align:center}.contact .title{color:#f1d08c}.footer{padding:22px;background:#3d2a21;color:#f4e4cb;text-align:center;font-size:14px}.footer a{color:#fff;text-underline-offset:3px}.muted{color:var(--muted)}
@media(max-width:950px){.links{display:none}.hero-grid{grid-template-columns:1fr;min-height:auto}.hero-copy{padding:48px 0 20px}.hero h1{font-size:44px}.hero .lead{font-size:18px}.hero-portrait img{height:520px;width:min(100%,440px)}.quick,.grid3,.source-list,.social-grid,.resource,.book{grid-template-columns:1fr}.book-cover{max-width:300px;margin:auto}.title{font-size:32px}.page-head h1{font-size:38px}.wrap{padding:0 16px}section{padding:52px 0}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{nav,.buttons,.footer{display:none!important}body{background:#fff}.card,.book{box-shadow:none}}
.copy-btn{display:inline-flex;align-items:center;justify-content:center;border:1.5px solid #b98b42;border-radius:999px;padding:10px 15px;font-weight:850;background:#fff8e7;color:#5b3a28;cursor:pointer;font:inherit}.copy-btn:hover{box-shadow:0 6px 18px rgba(91,63,40,.12)}.copy-btn.copied{background:#315b4c;color:#fff;border-color:#315b4c}.copy-live{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);background:#2f261f;color:#fff;padding:10px 16px;border-radius:999px;opacity:0;pointer-events:none;z-index:999}.copy-live:not(:empty){animation:copytoast 2s ease}@keyframes copytoast{0%,100%{opacity:0}15%,85%{opacity:1}}.tool-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px}.library-search-meta{text-align:center;color:var(--muted);margin:-12px 0 24px}.section-kicker{text-align:center;color:var(--gold);font-weight:850;letter-spacing:.05em;text-transform:uppercase;font-size:12px}.resource .card{display:flex;flex-direction:column}.resource .card .tool-row{margin-top:auto}.copy-block{border:1px dashed #cfa85e;background:#fffdf8;border-radius:14px;padding:14px;margin:14px 0}.copy-block code{white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px}.nav-mobile{display:none}@media(max-width:950px){.nav{align-items:flex-start;padding-top:16px;padding-bottom:16px}.brand{max-width:78%}.nav-mobile{display:block;font-size:13px;color:var(--muted)}}
@media(max-width:950px){.nav{flex-direction:column;align-items:stretch}.brand{max-width:none}.links{display:flex;width:100%;overflow-x:auto;flex-wrap:nowrap;gap:8px;padding:2px 0 6px;scrollbar-width:thin}.links a{white-space:nowrap;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 11px}.hero-portrait{padding-bottom:0}}

/* V12 canon portal */
.canon-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.canon-card{display:flex;flex-direction:column;gap:6px;text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow);min-height:150px}.canon-card:hover{border-color:#c89c52;transform:translateY(-1px)}.canon-card b{font-family:Georgia,serif;color:var(--brown);font-size:21px}.canon-card span{color:var(--muted)}.canon-card small{margin-top:auto;color:var(--gold);font-weight:800}.canon-search{max-width:860px;margin:0 auto}.canon-search label{display:block;font-weight:800;margin-bottom:8px}.search-line{display:flex;gap:10px}.search-line input{flex:1;min-width:0;font-size:17px;padding:13px 15px;border:1px solid var(--line);border-radius:14px}.prose{max-width:900px}.prose h2{font-family:Georgia,serif;color:var(--brown);margin-top:32px}@media(max-width:950px){.canon-grid{grid-template-columns:1fr 1fr}.search-line{flex-direction:column}}@media(max-width:560px){.canon-grid{grid-template-columns:1fr}}

/* V13: bìa lớn + giao diện Việt ngữ rõ ràng */
.hero-cover{position:relative;min-height:520px;display:flex;align-items:flex-end;overflow:hidden;background:#eadfcf;border-bottom:1px solid var(--line)}
.hero-cover>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.hero-cover-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.08) 20%,rgba(48,30,18,.68) 100%)}
.hero-cover-content{position:relative;z-index:2;padding-top:230px;padding-bottom:48px;color:white;text-shadow:0 2px 14px rgba(0,0,0,.42)}
.hero-cover-content h1{font-family:Georgia,serif;font-size:54px;line-height:1.08;margin:16px 0 10px;color:white}
.hero-cover-content p{font-size:22px;margin:0;font-weight:700}
.intro-home{padding-top:24px}.intro-home .hero-grid{min-height:auto}.intro-home .hero-copy{padding:34px 0}.intro-home .hero-portrait img{height:520px}
@media(max-width:950px){.hero-cover{min-height:420px}.hero-cover-content{padding-top:180px;padding-bottom:30px}.hero-cover-content h1{font-size:38px}.hero-cover-content p{font-size:18px}.intro-home .hero-portrait img{height:480px}}

/* V14: bìa chính dùng ảnh Diệu An, cắt ngang bằng CSS để không hiện chữ của ảnh dọc */
.hero-dieuan{position:relative;min-height:540px;overflow:hidden;background:#3b2c1f}
.hero-dieuan>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 44%;filter:saturate(.95) brightness(.9)}
.hero-dieuan .hero-cover-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(38,25,13,.76) 0%,rgba(38,25,13,.42) 43%,rgba(38,25,13,.10) 74%,rgba(38,25,13,.12) 100%)}
.hero-dieuan .hero-cover-content{position:relative;z-index:2;min-height:540px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;text-align:left;color:#fff;max-width:1200px}
.hero-dieuan .hero-cover-content h1{max-width:760px;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.35)}
.hero-dieuan .hero-cover-content p{color:#fff;max-width:720px}
.hero-dieuan .hero-name{font-weight:700;letter-spacing:.02em}
@media(max-width:760px){.hero-dieuan,.hero-dieuan .hero-cover-content{min-height:480px}.hero-dieuan>img{object-position:center 42%}.hero-dieuan .hero-cover-shade{background:linear-gradient(0deg,rgba(38,25,13,.72),rgba(38,25,13,.18))}.hero-dieuan .hero-cover-content{justify-content:flex-end;padding-bottom:38px}}


/* V16 – bản chốt: giữ nguyên bìa chính, khung tra cứu dọc 9:16 */
.hero-static{width:100%;background:#f6ead4;border-bottom:1px solid var(--line);overflow:hidden}
.hero-static img{display:block;width:100%;height:auto;object-fit:contain}
.intro-home .hero-portrait{align-self:center;padding:0;min-height:0}
.intro-home .hero-portrait{width:min(100%,390px);margin:0 auto;aspect-ratio:9/16;border-radius:26px;overflow:hidden;background:#fff9ef;border:1px solid var(--line);box-shadow:var(--shadow)}
.intro-home .hero-portrait img{width:100%;height:100%;object-fit:contain;object-position:center;background:#fff9ef;border-radius:0;box-shadow:none}
.intro-home .hero-caption{display:none}
@media(max-width:950px){.intro-home .hero-portrait{width:min(86vw,390px);aspect-ratio:9/16}.intro-home .hero-portrait img{height:100%;width:100%;object-fit:contain}}

/* V17: bìa chính giữ nguyên ảnh người dùng đã chốt */
.hero-dieuan{min-height:0;background:#fff}.hero-dieuan>img{position:relative;display:block;width:100%;height:auto;object-fit:contain;object-position:center;filter:none}.hero-dieuan .hero-cover-shade,.hero-dieuan .hero-cover-content{display:none}.intro-home .hero-portrait img{object-fit:contain;object-position:center center;}