:root { --c: #F28C28; --c2: #3BB8A9; --bg: #2A1A0E; --ink: #14203d; --mut: #5d6a8a; --sat: env(safe-area-inset-top, 0px); }
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--bg); font-family: "Be Vietnam Pro", system-ui, sans-serif; color: var(--ink); overscroll-behavior: none; }
canvas#c { position: fixed; inset: 0; touch-action: none; display: block; }
#menu { position: fixed; inset: 0; z-index: 20; display: none; overflow-y: auto; -webkit-overflow-scrolling: touch; }
#menu.on { display: block; }
button { font: inherit; cursor: pointer; color: inherit; }
.home { min-height: 100%; display: flex; flex-direction: column; align-items: center; gap: 14px; padding: calc(var(--sat) + 76px) 16px 32px; max-width: 520px; margin: 0 auto; }
.logo { text-align: center; color: #fff; text-shadow: 0 4px 18px rgba(0,0,0,.3); }
.logo .mark { width: 76px; height: 76px; margin: 0 auto 6px; border-radius: 24px; display: grid; place-items: center; font-size: 42px; background: linear-gradient(135deg, var(--c2), var(--c)); box-shadow: 0 10px 30px rgba(0,0,0,.3); transform: rotate(-8deg); }
.logo h1 { margin: 0; font-size: clamp(40px, 11vw, 60px); font-weight: 900; letter-spacing: -1px; line-height: 1; }
.logo p { margin: 4px 0 0; font-weight: 800; font-size: 18px; }
.story { color: #fff; text-align: center; font-weight: 600; margin: 0; opacity: .92; }
.btn { display: block; width: 100%; min-height: 52px; border: 0; border-radius: 18px; background: #fff; font-weight: 800; font-size: 17px; margin: 8px 0; box-shadow: 0 6px 18px rgba(0,0,0,.18); }
.btn.main { background: linear-gradient(180deg, var(--c2), var(--c)); color: #fff; }
.btn.big { min-height: 72px; font-size: 24px; font-weight: 900; }
.btn.big small { display: block; font-size: 14px; font-weight: 700; opacity: .9; }
.link { border: 0; background: rgba(255,255,255,.88); border-radius: 14px; padding: 12px 16px; font-weight: 800; width: 100%; }
.panel { background: #fff; border-radius: 22px; padding: 20px; max-width: 480px; margin: calc(var(--sat) + 70px) auto 24px; width: calc(100% - 32px); }
.panel h2 { margin: 0 0 8px; }
.panel p, .panel li { color: var(--mut); font-weight: 600; line-height: 1.5; }
.foot { color: #fff; font-size: 13px; text-align: center; opacity: .85; }
.foot a { color: #fff; }
/* Truy Tìm */
.home { justify-content: flex-start; }
.btn small { display: block; font-size: 13px; font-weight: 700; opacity: .9; margin-top: 2px; }
.btn.day { background: linear-gradient(180deg, #ffd66b, #ffb020); color: #3a2400; min-height: 64px; }
.btn.quick { background: linear-gradient(180deg, #62d3c4, #2a8f83); color: #fff; min-height: 64px; }
.sec { color: #ffd9a0; margin: 8px 0 0; font-size: 16px; font-weight: 800; align-self: flex-start; text-shadow: 0 2px 6px rgba(0,0,0,.5); }
.chaps { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; width: 100%; }
.chp { min-height: 84px; border: 0; border-radius: 18px; color: #3a2414; background: linear-gradient(160deg, #fff6e2, #f2d7a8); display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: 3px; padding: 10px 12px; text-align: left; box-shadow: 0 6px 16px rgba(0,0,0,.3); }
.chp b { font-size: 15px; font-weight: 900; line-height: 1.2; }
.chp span { font-size: 12.5px; font-weight: 700; color: #8a5a2a; }
.chp i { font-style: normal; color: #e07a10; font-size: 15px; letter-spacing: 1px; }
.chp.lock { background: rgba(40,28,18,.85); color: #9c8a74; box-shadow: none; }
.chp.lock span { color: #8a7a64; }
.story-card { text-align: center; }
.story-card .chap { color: #c06a1a; font-weight: 900; letter-spacing: .5px; }
.story-card h2 { font-size: 28px; color: #3a2414; }
.story-card .clv { width: 240px; height: 120px; display: block; margin: 6px auto 2px; }
.story-card p { color: #4a3a2a; font-size: 17px; }
.tags { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.tags span { background: #fdebd0; color: #a0521a; border-radius: 999px; padding: 4px 12px; font-weight: 800; font-size: 13px; }
.clues { list-style: none; padding: 0; margin: 10px 0; display: flex; flex-direction: column; gap: 10px; }
.clues li { display: flex; gap: 12px; align-items: center; background: #fbf3e2; border-radius: 14px; padding: 8px; }
.clues li canvas, .clues li .q { width: 64px; height: 64px; border-radius: 12px; flex: none; }
.clues li .q { background: #e8dcc4; display: grid; place-items: center; font-weight: 900; font-size: 30px; color: #a08a6a; }
.clues li.dim { opacity: .65; }
.panel li b { color: #5a3d22; }