@import url('https://api.fontshare.com/v2/css?f[]=satoshi@400,500,700,900&display=swap');
/* Omni Study — website. Brand: indigo #4F46E5/#6366F1 · Be Vietnam Pro (display) + Inter (body) */
:root{
  --brand:#4F46E5;--brand2:#6366F1;--brand-soft:#EEF2FF;--ink:#0F172A;--ink2:#334155;--ink3:#64748B;
  --paper:#FFFFFF;--bg:#F8FAFC;--line:#E2E8F0;--ok:#10B981;--rec:#EF4444;--warn:#F59E0B;
  --r:14px;--shadow:0 10px 30px rgba(15,23,42,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Satoshi',Inter,system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
h1,h2,h3,.display{font-family:'Satoshi',"Be Vietnam Pro",Inter,sans-serif}
a{color:var(--brand);text-decoration:none}
.wrap{max-width:1560px;margin:0 auto;padding:0 24px}
/* nav */
nav{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:50}
.nav-in{display:flex;align-items:center;gap:20px;height:60px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:22px;color:var(--ink)}
.logo-mark{height:26px;width:auto;display:block}
.logo .dot{width:11px;height:11px;border-radius:50%;background:var(--rec);box-shadow:0 0 0 4px #FEE2E2}
.nav-links{margin-left:auto;display:flex;gap:14px;align-items:center;font-size:14.5px;flex-wrap:wrap}
.nav-links a{color:var(--ink2)}
.nav-links a.btn{color:#fff}   /* KI-084: .nav-links a đè .btn -> ép chữ trắng cho nút solid */
.nav-links a.btn.ghost{color:var(--brand)}   /* nút ghost (Record/Import) giữ chữ tím, không bị #fff đè */
.nav-links .navbtn{min-width:150px;text-align:center;box-sizing:border-box;padding:9px 16px}   /* 3 nút Record/Import/Add-to-Chrome CÙNG KÍCH THƯỚC */
.nav-btns{display:flex;align-items:center;gap:10px;margin-left:22px;flex-wrap:wrap}   /* cụm 3 nút -> sát PHẢI, tách khỏi link */
.nav-btns .navbtn{min-width:150px;text-align:center;box-sizing:border-box;padding:9px 16px}   /* cùng kích thước */
.nav-btns a.btn{color:#fff}
.nav-btns a.btn.ghost{color:var(--brand)}
.btn{display:inline-block;background:var(--brand);color:#fff;border:none;border-radius:10px;
  padding:11px 20px;font-weight:700;font-size:15px;cursor:pointer;transition:transform .15s, box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(79,70,229,.35)}
.btn.ghost{background:var(--paper);color:var(--brand);border:1.5px solid var(--brand)}
.btn.big{padding:14px 28px;font-size:16px}
/* hero */
.hero{padding:72px 0 40px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(30px,4.6vw,46px);line-height:1.15;letter-spacing:-.5px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero p.lead{margin:16px 0 24px;font-size:17px;color:var(--ink2);max-width:46ch}
.badges{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap;font-size:13px;color:var(--ink3)}
.badges span{background:var(--paper);border:1px solid var(--line);border-radius:99px;padding:5px 12px}
/* mock: video + overlay caption (signature) */
.mock{background:#0B1220;border-radius:18px;box-shadow:var(--shadow);padding:14px;position:relative;overflow:hidden}
.mock .bar{display:flex;gap:6px;margin-bottom:10px}
.mock .bar i{width:10px;height:10px;border-radius:50%;background:#334155;display:inline-block}
.mock .video{background:linear-gradient(135deg,#1E293B,#0F172A);border-radius:10px;height:230px;position:relative}
.mock .play{position:absolute;inset:0;display:grid;place-items:center;color:#475569;font-size:44px}
.overlaybox{position:absolute;left:14px;right:14px;bottom:14px;background:rgba(15,23,42,.92);
  border:1px solid #33415588;border-radius:12px;padding:12px 14px;color:#E2E8F0;font-size:13.5px}
.overlaybox .row1{display:flex;align-items:center;gap:8px;font-weight:700;font-size:12px;color:#FCA5A5}
.overlaybox .row1 .rdot{width:8px;height:8px;border-radius:50%;background:var(--rec);animation:blink 1.2s infinite}
@keyframes blink{50%{opacity:.25}}
.overlaybox .orig{margin-top:6px;color:#CBD5E1}
.overlaybox .trans{margin-top:3px;color:#A5B4FC;font-weight:600}
.typing::after{content:"▍";animation:blink 1s infinite}
/* sections */
section{padding:56px 0}
.kicker{font-size:12.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--brand)}
h2{font-size:clamp(24px,3.2vw,32px);margin:8px 0 8px}
.sub{color:var(--ink2);max-width:60ch}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:0 2px 10px rgba(15,23,42,.04)}
.card .ico{font-size:26px}
.card h3{font-size:17px;margin:10px 0 6px}
.card p{font-size:14.5px;color:var(--ink2)}
/* study pack chips */
.pack{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.pack span{background:var(--brand-soft);color:var(--brand);border-radius:10px;padding:9px 14px;font-weight:600;font-size:14px}
/* pricing */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}
.tier{background:var(--paper);border:1.5px solid var(--line);border-radius:16px;padding:26px;position:relative;display:flex;flex-direction:column}
.tier.hot{border-color:var(--brand);box-shadow:0 12px 34px rgba(79,70,229,.18)}
.tier .tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--brand);color:#fff;
  font-size:11.5px;font-weight:800;border-radius:99px;padding:4px 12px;letter-spacing:.04em}
.tier h3{font-size:18px}
.price{font-size:34px;font-weight:800;margin:8px 0 2px}
.price small{font-size:14px;color:var(--ink3);font-weight:500}
.tier ul{list-style:none;margin:16px 0 20px;font-size:14.5px;color:var(--ink2)}
.tier .btn{margin-top:auto}   /* đẩy nút CTA xuống đáy -> 3 nút Sign in/Get Coffee/Get Pro thẳng hàng */
.tier li{padding:5px 0 5px 24px;position:relative}
.tier li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:800}
.ppp{font-size:13px;color:var(--ink3);margin-top:14px}

/* --- chu kỳ thanh toán (đẩy quý/năm để né phí cố định Paddle) --- */
.cycles{display:inline-flex;gap:4px;background:var(--paper);border:1.5px solid var(--line);
  border-radius:999px;padding:4px;margin-top:22px}
.cycles button{border:none;background:transparent;border-radius:999px;padding:9px 18px;
  font-family:inherit;font-size:14px;font-weight:700;color:var(--ink2);cursor:pointer;display:flex;align-items:center;gap:7px}
.cycles button.on{background:var(--brand);color:#fff}
.cycles .save{background:var(--ok);color:#fff;font-size:11px;font-weight:800;border-radius:999px;padding:2px 7px}
.cycles button.on .save{background:rgba(255,255,255,.25)}
.permo{font-size:13px;color:var(--ink3);margin:-2px 0 4px}
.tier .price{transition:opacity .15s}

/* --- gói phút trả trước --- */
.packs{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:20px}
.pack{border:1.5px solid var(--line);border-radius:14px;padding:16px 14px;text-align:center;position:relative;background:#fff;transition:border-color .15s,transform .15s}
.pack:hover{border-color:var(--brand);transform:translateY(-2px)}
.pack.best{border-color:var(--brand);box-shadow:0 8px 24px rgba(79,70,229,.12)}
.pack .mins{font-family:"Be Vietnam Pro";font-weight:800;font-size:24px;color:var(--ink)}
.pack .hrs{font-size:12px;color:var(--ink3);margin-top:-2px}
.pack .pprice{font-size:20px;font-weight:800;color:var(--brand);margin:10px 0 2px}
.pack .ppm{font-size:11.5px;color:var(--ink2)}
.pack .save{display:inline-block;margin-top:8px;background:var(--ok);color:#fff;font-size:11px;font-weight:800;border-radius:999px;padding:2px 9px}
.pack .save.zero{background:transparent;color:var(--ink3)}
.pack .buy{margin-top:12px;width:100%}
/* faq + footer */
details{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-top:12px}
summary{font-weight:700;cursor:pointer}
details p{margin-top:8px;color:var(--ink2);font-size:14.5px}
footer{border-top:1px solid var(--line);padding:28px 0;margin-top:40px;font-size:13.5px;color:var(--ink3)}
.foot{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
.foot .sp{margin-left:auto}
/* dashboard */
.dash{max-width:820px;margin:48px auto;background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:var(--shadow)}
.usagebar{height:12px;background:var(--brand-soft);border-radius:99px;overflow:hidden;margin:10px 0}
.usagebar i{display:block;height:100%;background:var(--brand);border-radius:99px;transition:width .4s}
.kv{display:flex;justify-content:space-between;font-size:14.5px;padding:8px 0;border-bottom:1px dashed var(--line)}
.pill{display:inline-block;background:var(--brand-soft);color:var(--brand);font-weight:800;font-size:12px;border-radius:99px;padding:4px 12px;text-transform:uppercase;letter-spacing:.06em}
.note{font-size:13px;color:var(--ink3)}
input[type=email],input[type=text]{width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit}
@media(max-width:860px){.hero{grid-template-columns:1fr;padding-top:44px}.grid3,.tiers{grid-template-columns:1fr}.nav-links a.hidem{display:none}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* Mobile app download (§Task2) */
#mobile{padding:18px 0 8px}
.store-btns{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px}
.store-btn{display:inline-flex;align-items:center;gap:11px;background:#0F172A;color:#fff;border-radius:12px;padding:11px 20px;transition:transform .15s,box-shadow .15s}
.store-btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,23,42,.25)}
.store-btn svg{flex:none}
.store-btn span{display:flex;flex-direction:column;line-height:1.15;text-align:left}
.store-btn small{font-size:11px;opacity:.85}
.store-btn b{font-size:16px;font-weight:700}
.store-btn.soon{opacity:.5;pointer-events:none}

/* ===== Source-button disabled (mobile: system/both) ===== */
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:8px 0 4px}
.hero-cta .herobtn{min-width:150px;text-align:center;box-sizing:border-box;padding:12px 22px;font-size:15.5px}
.hero-cta a.btn.ghost{color:var(--brand)}
.srcbtn.disabled{opacity:.45;cursor:not-allowed;filter:grayscale(.3)}
.srcbtn.disabled::after{content:" · cần máy tính";font-size:11px;color:var(--ink3)}

/* ===== MOBILE RESPONSIVE (§Task2 — tối ưu web cho điện thoại) ===== */
@media(max-width:640px){
  .wrap{padding:0 16px}
  /* Nav gọn: logo + nút chính; ẩn link phụ, nút không xuống dòng */
  .nav-in{height:56px;gap:12px}
  .nav-links{gap:12px;font-size:13.5px}
  .nav-links a.hidem{display:none}
  .btn{padding:9px 14px;font-size:14px}
  .btn.big{padding:12px 20px;font-size:15px}
  /* Hero */
  .hero{padding-top:32px}
  h1,.display{font-size:30px;line-height:1.15}
  .hero p.lead{font-size:15.5px}
  .hero .btn,.hero .btn.big{width:100%;text-align:center}
  /* Khu ghi: nguồn xếp dọc, form 1 cột, card full */
  .rec-card{padding:16px;border-radius:14px}
  .srcbar{grid-template-columns:1fr;gap:8px}
  .optrow{grid-template-columns:1fr;gap:10px}
  .bigbtn.stop,#btnStop,#btnRec{width:100%}
  .viz-wrap{order:3;flex-basis:100%}
  /* Sections + lưới về 1 cột */
  .grid3,.tiers,.foot{grid-template-columns:1fr}
  section{padding:36px 0}
  /* Nút store xếp dọc, đầy chiều ngang */
  .store-btns{flex-direction:column}
  .store-btn{width:100%;justify-content:center}
  /* Bảng giá + dashboard vừa màn */
  .dash{margin:28px auto;padding:22px}
  .pack{padding:18px}
  /* Kết quả study pack đọc tốt trên mobile */
  #resultDoc,.doc-body{font-size:15px}
}

/* ===== Report viewer: 2 cột (nội dung + mục lục) + Mermaid + toolbar (§Report UI) ===== */
.report-toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:14px 0}
.report-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start}
.report-layout .doc{min-width:0}
.report-toc{border-left:1px solid var(--line);padding-left:16px}
.report-side .report-toc{border-left:none;padding-left:0;margin-top:2px;flex:1 1 auto;min-height:0;overflow:auto}
.report-toc .toc-title{font-size:12px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:var(--ink3);margin-bottom:8px}
.report-toc .toc-link{display:block;padding:4px 0;color:var(--ink2);text-decoration:none;line-height:1.35;font-size:13.5px;border-left:2px solid transparent;padding-left:10px;margin-left:-12px}
.report-toc .toc-link:hover{color:var(--brand)}
.report-toc .toc-link.toc-3{padding-left:22px;font-size:12.5px;color:var(--ink3)}
.report-toc .toc-link.active{color:var(--brand);font-weight:700;border-left-color:var(--brand)}
.report-toc .toc-empty{color:var(--ink3);font-size:13px}
.mermaid{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;overflow:auto;text-align:center;margin:12px 0}
@media(max-width:900px){
  .report-layout{grid-template-columns:1fr;gap:0}
  .report-toc{position:static;max-height:none;border-left:0;border-top:1px solid var(--line);padding:14px 0 0;margin-top:16px;order:-1}
}
@media print{
  nav,.report-toolbar,.report-toc,.savedbadge,.row-actions,#paywallBox,footer{display:none!important}
  .report-layout{grid-template-columns:1fr}
  .wrap{max-width:100%;padding:0}
  .doc{font-size:12pt}
  body{background:#fff}
}
.langsel{border:1px solid var(--line);border-radius:8px;padding:6px 8px;font-family:inherit;font-size:13px;background:#fff;color:var(--ink2);cursor:pointer}

/* Progressive disclosure: icon (i) + tooltip */
.tip{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-size:11px;font-weight:700;cursor:help;position:relative;vertical-align:middle;margin-left:6px;font-style:normal}
.tip:hover::after,.tip:focus-visible::after{content:attr(data-tip);position:absolute;bottom:145%;left:50%;transform:translateX(-50%);background:#0F172A;color:#fff;padding:9px 11px;border-radius:9px;font-size:12px;font-weight:400;line-height:1.5;width:min(280px,72vw);z-index:60;box-shadow:0 10px 30px rgba(0,0,0,.2);white-space:normal;text-align:left}
.tip:hover::before,.tip:focus-visible::before{content:"";position:absolute;bottom:145%;left:50%;transform:translate(-50%,100%);border:6px solid transparent;border-top-color:#0F172A;z-index:60}
/* Badge trạng thái đang ghi (thay câu dài) */
.rec-badge{display:inline-flex;align-items:center;gap:7px;background:#FEF2F2;color:#DC2626;border:1px solid #FECACA;border-radius:999px;padding:5px 12px;font-size:12.5px;font-weight:700;white-space:nowrap}
.rec-badge .dot{width:8px;height:8px;border-radius:50%;background:#DC2626;animation:recpulse 1.2s infinite}
@keyframes recpulse{0%,100%{opacity:1}50%{opacity:.2}}

/* Tự động dừng: hộp + công tắc bật/tắt + ô Giờ/Phút */
.timer-box{background:#F8FAFF;border:1px solid #EEF2FF;border-radius:12px;padding:14px 16px;margin-top:8px}
.switch-row{display:flex;align-items:center;gap:12px;cursor:pointer;font-weight:500;user-select:none}
.switch{position:relative;display:inline-block;width:44px;height:24px;flex:none}
.switch input{opacity:0;width:0;height:0}
.switch .slider{position:absolute;inset:0;background:#CBD5E1;border-radius:999px;transition:.2s}
.switch .slider::before{content:"";position:absolute;height:18px;width:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.25)}
.switch input:checked + .slider{background:var(--brand)}
.switch input:checked + .slider::before{transform:translateX(20px)}
.switch input:focus-visible + .slider{outline:2px solid var(--brand);outline-offset:2px}
.timer-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.timer-fields .tf label{display:block;font-size:13px;color:#64748B;margin-bottom:4px}
.timer-fields input{width:100%}


/* On-demand section (flashcard/mindmap tạo khi bấm) */
.ondemand-box{border:1.5px dashed #c7d2fe;background:#f5f7ff;border-radius:12px;padding:18px 20px;margin:8px 0 4px;text-align:center}
.ondemand-note{color:#5b6472;font-size:14px;margin-bottom:12px}
.ondemand-btn{background:#4f46e5;color:#fff;border:0;border-radius:10px;padding:10px 22px;font-size:15px;font-weight:600;cursor:pointer;transition:background .15s}
.ondemand-btn:hover{background:#4338ca}
.ondemand-btn:disabled{opacity:.7;cursor:default}
.ondemand-content{animation:odfade .25s ease}
@keyframes odfade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}


/* ===== Mind map (Markmap SVG) ===== */
.mindmap-wrap{width:100%;background:linear-gradient(180deg,#FBFCFF,#F5F7FF);border:1px solid #E8ECFF;border-radius:14px;margin:8px 0 4px;padding:12px;overflow-x:auto}
.mindmap-wrap svg{display:block;max-width:100%;height:auto;margin:0 auto}
.mindmap-wrap .markmap-node text{font-family:'Satoshi',Inter,sans-serif;font-size:14px}
.mindmap-fallback{padding:14px 18px}
.mindmap-fallback ul{margin:6px 0;padding-left:20px}
.mindmap-fallback li{margin:3px 0;line-height:1.5}

/* ===== IN -> PDF (Save as PDF): chỉ in #resultDoc, ẩn giao diện ===== */
@media print{
  html,body{background:#fff !important}
  body *{visibility:hidden !important}
  .printing-target,.printing-target *{visibility:visible !important}
  .printing-target{position:absolute !important;left:0;top:0;width:100% !important;max-height:none !important;height:auto !important;overflow:visible !important;margin:0 !important;padding:0 !important;border:0 !important;box-shadow:none !important;background:#fff !important}
  @page{margin:15mm}
  .printing-target h1,.printing-target h2,.printing-target h3,.printing-target h4{page-break-after:avoid;break-after:avoid}
  .printing-target p,.printing-target li,.printing-target tr,.printing-target table,.printing-target blockquote,.printing-target .mindmap-wrap,.printing-target svg,.printing-target .cs-orig,.printing-target .cs-trans{page-break-inside:avoid;break-inside:avoid}
  .printing-target table{width:100% !important;table-layout:fixed;border-collapse:collapse}
  .printing-target td,.printing-target th{word-break:break-word;padding:6px 8px;vertical-align:top;border:1px solid #ddd}
  .printing-target a{text-decoration:none;color:inherit}
  .ondemand-box{display:none !important}
}


/* Flashcard: mỗi thẻ 1 khối có phân tách rõ (Hỏi trên, Đáp dưới) */
.flashcard-item{background:#FafBff;border:1px solid #EEF2FF;border-left:4px solid #6366F1;border-radius:10px;padding:12px 16px;margin:10px 0}
.flashcard-item strong{color:#4338CA}


/* L-48 web: thẻ tải bản ghi (không lưu server) */
.rec-dl-card{margin:14px 0 4px;padding:14px 16px;background:#FFF8EC;border:1px solid #F5E4C3;border-left:4px solid #E8A93B;border-radius:12px}
.rec-dl-head{font-size:15px;color:#7A5A15;margin-bottom:4px}
.rec-dl-note{font-size:13.5px;color:#8A6A2A;margin-bottom:10px;line-height:1.5}
.rec-dl-card .btn{background:#E8A93B;border-color:#E8A93B;color:#fff}
.rec-dl-card .rec-size{font-size:12.5px;color:#B08A45;font-weight:500}
.rec-dl-card.locked{background:#F3F0FF;border-color:#DDD6FE;border-left-color:#6366F1}
.rec-dl-card.locked .rec-dl-head{color:#4338CA}
.rec-dl-card.locked .rec-dl-note{color:#5B53B8}
.rec-dl-card.locked .btn{background:#6366F1;border-color:#6366F1}
.rec-dl-card.locked .btn.ghost{background:transparent;border-color:#C7C2F0;color:#4338CA}


/* ===== Floating quick-action FAB (hiện khi cuộn khỏi hero) ===== */
.fab-wrap{position:fixed;right:22px;bottom:22px;z-index:70;display:flex;flex-direction:column;align-items:flex-end;gap:12px;opacity:0;visibility:hidden;transform:translateY(16px);transition:opacity .25s ease,transform .25s ease,visibility .25s}
.fab-wrap.show{opacity:1;visibility:visible;transform:translateY(0)}
.fab-actions{display:flex;flex-direction:column;align-items:flex-end;gap:10px;pointer-events:none;opacity:0;transform:translateY(10px) scale(.96);transition:opacity .2s ease,transform .2s ease}
.fab-wrap.open .fab-actions{pointer-events:auto;opacity:1;transform:none}
.fab-item{display:inline-flex;align-items:center;justify-content:center;min-width:176px;box-sizing:border-box;background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:11px 20px;font-weight:600;font-size:14px;text-decoration:none;box-shadow:0 6px 18px rgba(20,20,50,.14);white-space:nowrap;transition:transform .12s,box-shadow .12s}
.fab-item:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(20,20,50,.22)}
.fab-item .fab-ic{font-size:16px;line-height:1}
.fab-item.fab-cta{background:var(--brand);color:#fff;border-color:var(--brand)}
.fab-main{width:56px;height:56px;border-radius:50%;border:none;background:var(--brand);color:#fff;cursor:pointer;box-shadow:0 8px 22px rgba(79,70,229,.42);display:grid;place-items:center;transition:transform .22s ease,box-shadow .2s}
.fab-main:hover{box-shadow:0 12px 28px rgba(79,70,229,.5)}
.fab-plus{font-size:30px;line-height:1;font-weight:400;transition:transform .22s ease}
.fab-wrap.open .fab-plus{transform:rotate(45deg)}
@media (hover:hover){.fab-wrap:hover .fab-actions{pointer-events:auto;opacity:1;transform:none}.fab-wrap:hover .fab-plus{transform:rotate(45deg)}}
@media (max-width:640px){.fab-wrap{right:14px;bottom:14px}.fab-main{width:52px;height:52px}.fab-item{font-size:13.5px}}


/* SIDEBAR REPORT (KI-144): toolbar+bản ghi+TOC dồn cột phải, report body rộng + cuộn theo trang */
.report-side{position:sticky;top:16px;display:flex;flex-direction:column;gap:14px;max-height:calc(100vh - 24px);overflow:hidden;padding-right:2px}
.report-side .savedbadge{align-self:flex-start;margin:0}
.report-side .report-toolbar{display:flex;flex-wrap:wrap;gap:8px;margin:0}
.report-side .report-toolbar .btn{flex:1 1 45%;text-align:center;justify-content:center;font-size:13.5px;padding:9px 10px}
@media (max-width:900px){
  .report-layout{grid-template-columns:1fr;gap:16px}
  .report-side{position:static;order:-1;max-height:none;overflow:visible}
  .report-side .report-toc{display:none}
  .doc{margin-top:0}
}

/* Che mờ report cho tài khoản miễn phí (KI mới): hiện tới Tổng quan, che từ Nội dung chi tiết */
.report-locked{position:relative;min-height:320px}
.report-locked > *:not(.report-lock-ov){filter:blur(6px);-webkit-filter:blur(6px);user-select:none;pointer-events:none}
.report-lock-ov{position:absolute;left:0;right:0;top:0;bottom:0;display:flex;justify-content:center;align-items:flex-start;padding-top:26px;background:linear-gradient(180deg,rgba(255,255,255,.5) 0%,rgba(255,255,255,.9) 20%,#fff 42%)}
.rlo-card{max-width:440px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 14px 44px rgba(20,20,60,.18);padding:22px 24px;position:sticky;top:26px}
.rlo-title{font-weight:800;font-size:18px;color:var(--ink);margin-bottom:8px}
.rlo-sub{font-size:14px;color:#475569;line-height:1.55;margin-bottom:16px}
.rlo-btn{background:var(--brand);color:#fff;border-color:var(--brand)}


/* ===== Mobile nav: hamburger + menu (chỉ hiện ≤640px) ===== */
.nav-burger{display:none}
.nav-mobile{display:none}
@media(max-width:640px){
  .nav-in .nav-links{display:none}
  .brand-name{display:none}
  #heroInstall,#fabInstall{display:none!important}
  .nav-burger{display:flex;margin-left:auto;width:42px;height:42px;flex-direction:column;justify-content:center;align-items:center;gap:5px;padding:0;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}
  .nav-burger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
  .nav-burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-burger.is-open span:nth-child(2){opacity:0}
  .nav-burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  body.nav-open .nav-mobile{display:block;position:fixed;top:56px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 14px 34px rgba(20,20,50,.18);z-index:85;padding:6px 16px 14px}
  .nav-mobile .nav-links{display:flex!important;flex-direction:column;align-items:stretch;gap:0;margin:0}
  .nav-mobile .nav-links a{padding:14px 4px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink)}
  .nav-mobile .nav-links a.hidem{display:block!important}
  .nav-mobile .nav-links a:last-of-type{border-bottom:none}
  .nav-mobile .langsel{margin-top:12px;width:100%;padding:11px;font-size:15px}
}

/* KI-181: nút đăng nhập provider (dọc, căn giữa, thương hiệu từng hãng) */
.oauth-btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:11px 16px;border-radius:10px;border:1px solid var(--line);background:#fff;color:#1a1a1a;font-weight:600;font-size:15px;font-family:inherit;cursor:pointer;transition:box-shadow .15s,filter .15s}
.oauth-btn:hover{box-shadow:0 2px 10px rgba(0,0,0,.10)}
.oauth-btn:active{filter:brightness(.96)}
.oauth-apple{background:#000;color:#fff;border-color:#000}
.oauth-ms{background:#fff;color:#5e5e5e;border-color:#8c8c8c}
.oauth-fb{background:#1877F2;color:#fff;border-color:#1877F2}
.oauth-x{background:#000;color:#fff;border-color:#000}
.oauth-ic{width:18px;height:18px;flex:0 0 18px;background-size:contain;background-repeat:no-repeat;background-position:center}
.oauth-apple .oauth-ic{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M17.05 12.5c0-2 1.6-2.9 1.7-3-1-1.4-2.4-1.6-2.9-1.6-1.2-.1-2.4.7-3 .7-.6 0-1.6-.7-2.6-.7-1.3 0-2.5.8-3.2 2-1.4 2.4-.4 5.9 1 7.8.6.9 1.4 2 2.4 1.9.9 0 1.3-.6 2.4-.6s1.4.6 2.4.6 1.7-.9 2.3-1.8c.7-1 1-2 1-2.1-.1 0-2-..7-2-3zm-2-5.5c.5-.6.9-1.5.8-2.4-.8 0-1.7.5-2.2 1.2-.5.6-.9 1.5-.8 2.3.9.1 1.8-.5 2.2-1.1z'/%3E%3C/svg%3E")}
.oauth-fb .oauth-ic{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M24 12a12 12 0 10-13.9 11.9v-8.4H7.1V12h3v-2.6c0-3 1.8-4.6 4.5-4.6 1.3 0 2.6.2 2.6.2v2.9h-1.5c-1.5 0-1.9.9-1.9 1.8V12h3.3l-.5 3.5h-2.8v8.4A12 12 0 0024 12z'/%3E%3C/svg%3E")}
.oauth-x .oauth-ic{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M18.9 2H22l-7.3 8.3L23 22h-6.6l-5.2-6.8L5.2 22H2l7.8-8.9L1.5 2h6.8l4.7 6.2L18.9 2zm-1.2 18h1.8L7.2 3.8H5.3L17.7 20z'/%3E%3C/svg%3E")}
.oauth-ms .oauth-ic{width:16px;height:16px;flex:0 0 16px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 23 23'%3E%3Cpath fill='%23f25022' d='M1 1h10v10H1z'/%3E%3Cpath fill='%2300a4ef' d='M1 12h10v10H1z'/%3E%3Cpath fill='%237fba00' d='M12 1h10v10H12z'/%3E%3Cpath fill='%23ffb900' d='M12 12h10v10H12z'/%3E%3C/svg%3E")}

/* KI-182: mobile — report DỌC, mục lục NEO TRÊN + GẬP/MỞ được */
@media(max-width:900px){
  .report-toc{border-top:0;padding-top:0;margin-top:0}
  .report-toc .toc-title{cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:8px;user-select:none;padding:11px 14px;background:var(--paper);border:1px solid var(--line);border-radius:12px;margin:0 0 12px}
  .report-toc .toc-title::after{content:"▾";font-size:13px;transition:transform .2s;color:var(--ink3)}
  .report-toc.collapsed .toc-title{margin-bottom:4px}
  .report-toc.collapsed .toc-title::after{transform:rotate(-90deg)}
  .report-toc.collapsed .toc-link{display:none}
  .report-toc .toc-link{padding:8px 0 8px 12px;font-size:14.5px}   /* dễ chạm hơn trên mobile */
}

/* KI-185/186: TẠM THỜI ẩn FAB + nút Add to Chrome (hero) — bỏ khối này để hiện lại khi extension ra mắt */
.fab-wrap{display:none !important}
#heroInstall{display:none !important}