:root {
  --ink: #010a13;
  --navy: #0a1428;
  --navy-2: #091428;
  --panel: #0b1a2c;
  --line: #1e2328;
  --gold-1: #f0e6d2;
  --gold-2: #c8aa6e;
  --gold-3: #c89b3c;
  --gold-4: #785a28;
  --gold-5: #463714;
  --blue-1: #cdfafa;
  --blue-2: #0ac8b9;
  --blue-3: #0397ab;
  --blue-4: #005a82;
  --text: #a09b8c;
  --text-hi: #f0e6d2;
  --serif: "Philosopher", "Times New Roman", serif;
  --sans: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --nav-h: 72px;
  --gutter: clamp(16px, 4vw, 48px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font: 400 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, p, dl, dd, ol { margin: 0; }
ol { padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--blue-2); outline-offset: 3px; }

h1, h2, h3, .brand, .tabs a, .kicker, .eyebrow, .btn-hex, .btn-gold, .btn-play, .foot-brand {
  font-family: var(--serif);
  font-weight: 700;
  text-transform: uppercase;
}

/* ---------- Thanh điều hướng ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: var(--nav-h);
  display: flex; align-items: center; gap: 32px;
  padding: 0 var(--gutter);
  background: linear-gradient(180deg, rgba(1,10,19,.96), rgba(1,10,19,.78));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gold-5);
}
.nav::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-2) 20%, var(--gold-2) 80%, transparent);
  opacity: .55;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--gold-1); letter-spacing: .14em; font-size: 18px; }
.brand img { border-radius: 50%; border: 2px solid var(--gold-3); box-shadow: 0 0 0 2px var(--ink), 0 0 14px rgba(200,155,60,.45); }
.tabs { display: flex; gap: 4px; height: 100%; margin-right: auto; }
.tabs a {
  position: relative; display: flex; align-items: center;
  padding: 0 16px; font-size: 14px; letter-spacing: .12em; color: var(--gold-2);
  transition: color .2s;
}
.tabs a:hover, .tabs a.is-active { color: var(--gold-1); }
.tabs a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold-2), transparent);
  transform: scaleX(0); transition: transform .25s;
}
.tabs a.is-active::after, .tabs a:hover::after { transform: scaleX(1); }
.tabs a.is-active { text-shadow: 0 0 14px rgba(240,230,210,.45); }

/* ---------- Nút ---------- */
.btn-play, .btn-hex, .btn-gold {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  letter-spacing: .12em; white-space: nowrap; border: 0; transition: filter .2s, transform .2s, box-shadow .2s, color .2s;
}
.btn-play {
  height: 40px; padding: 0 28px; font-size: 14px; color: var(--blue-1);
  background: linear-gradient(180deg, #1e3c46, #0a1e28);
  border: 2px solid var(--blue-2); border-radius: 22px;
  box-shadow: 0 0 0 1px var(--ink) inset, 0 0 16px rgba(10,200,185,.25);
}
.btn-play:hover { filter: brightness(1.25); box-shadow: 0 0 0 1px var(--ink) inset, 0 0 24px rgba(10,200,185,.55); }
.btn-hex {
  position: relative; min-height: 52px; padding: 0 32px; font-size: 15px; color: var(--blue-1);
  background: linear-gradient(180deg, var(--blue-2), var(--blue-4));
  clip-path: polygon(14px 0, calc(100% - 14px) 0, 100% 50%, calc(100% - 14px) 100%, 14px 100%, 0 50%);
  z-index: 0;
}
.btn-hex::before {
  content: ""; position: absolute; inset: 2px; z-index: -1;
  background: linear-gradient(180deg, #1e3c46, #0a1e28);
  clip-path: polygon(13px 0, calc(100% - 13px) 0, 100% 50%, calc(100% - 13px) 100%, 13px 100%, 0 50%);
  transition: background .2s;
}
.btn-hex:hover { color: #fff; filter: drop-shadow(0 0 12px rgba(10,200,185,.6)); }
.btn-hex:hover::before { background: linear-gradient(180deg, #2a5560, #0e2a36); }
.btn-gold {
  min-height: 48px; padding: 0 28px; font-size: 14px; color: var(--gold-2);
  background: rgba(30,35,40,.7);
  border: 2px solid transparent;
  border-image: linear-gradient(180deg, var(--gold-2), var(--gold-4)) 1;
}
.btn-gold:hover { color: var(--gold-1); border-image: linear-gradient(180deg, var(--gold-1), var(--gold-3)) 1; box-shadow: 0 0 18px rgba(200,170,110,.25); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: min(100svh, 1000px);
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 48px) var(--gutter) 96px;
  overflow: hidden; isolation: isolate;
}
.hero-bg {
  position: absolute; inset: 0; z-index: -2;
  background: url("https://ddragon.leagueoflegends.com/cdn/img/champion/splash/Yasuo_0.jpg") 62% 18% / cover no-repeat;
  animation: drift 26s ease-in-out infinite alternate;
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, var(--ink) 0%, rgba(1,10,19,.88) 32%, rgba(1,10,19,.25) 68%, rgba(1,10,19,.6) 100%),
    linear-gradient(0deg, var(--ink) 0%, transparent 34%);
}
@keyframes drift { from { transform: scale(1.04); } to { transform: scale(1.12) translate(-1.5%, -1%); } }
.wind { position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%; pointer-events: none; }
.hero-inner { max-width: 760px; }
.eyebrow { display: flex; align-items: center; gap: 12px; font-size: 13px; letter-spacing: .22em; color: var(--blue-2); }
.gem { width: 7px; height: 7px; flex: none; background: var(--gold-2); transform: rotate(45deg); }
.hero h1 {
  width: max-content; max-width: 100%;
  margin: 12px 0 4px; font-size: clamp(52px, 10vw, 120px); line-height: .95; letter-spacing: .04em;
  background: linear-gradient(180deg, #fff6df 0%, var(--gold-2) 55%, var(--gold-4) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 4px 24px rgba(0,0,0,.6));
}
.tagline { font-family: var(--serif); font-size: clamp(20px, 2.6vw, 28px); color: var(--gold-1); letter-spacing: .04em; }
.lede { margin-top: 16px; max-width: 520px; color: #c7c1b2; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 32px; }
.stats { display: flex; flex-wrap: wrap; gap: 0; margin-top: 48px; border-top: 1px solid var(--gold-5); }
.stats div { padding: 16px 28px 0 0; margin-right: 28px; border-right: 1px solid var(--gold-5); }
.stats div:last-child { border: 0; margin: 0; padding-right: 0; }
.stats dt { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.stats dd { font: 700 34px/1.2 var(--serif); color: var(--gold-1); }
.scroll-cue { position: absolute; left: 50%; bottom: 24px; width: 28px; height: 28px; transform: translateX(-50%); }
.scroll-cue span { position: absolute; inset: 4px; border-right: 2px solid var(--gold-2); border-bottom: 2px solid var(--gold-2); transform: rotate(45deg); animation: cue 1.8s ease-in-out infinite; }
@keyframes cue { 50% { transform: translateY(6px) rotate(45deg); opacity: .4; } }

/* ---------- Khối & tiêu đề ---------- */
.block { position: relative; padding: clamp(64px, 9vw, 120px) var(--gutter); isolation: isolate; }
.block > * { max-width: 1240px; margin-left: auto; margin-right: auto; }
.block-alt {
  background:
    radial-gradient(900px 420px at 50% 0, rgba(0,90,130,.28), transparent 70%),
    linear-gradient(180deg, var(--navy), var(--ink));
  border-block: 1px solid var(--gold-5);
}
.title { text-align: center; margin-bottom: 48px; }
.kicker { font-size: 13px; letter-spacing: .3em; color: var(--blue-2); }
.title h2 {
  display: flex; align-items: center; justify-content: center; gap: 20px;
  margin-top: 6px; font-size: clamp(30px, 4.6vw, 52px); line-height: 1.15; letter-spacing: .06em; color: var(--gold-1);
}
.title h2::before, .title h2::after {
  content: ""; flex: 0 1 140px; height: 1px; min-width: 24px;
  background: linear-gradient(90deg, transparent, var(--gold-2));
}
.title h2::after { transform: scaleX(-1); }
.sub { max-width: 620px; margin: 14px auto 0; }
.note { margin-top: 24px; text-align: center; font-size: 13px; color: #6f6a5e; }
.center { text-align: center; margin-top: 40px; }

.frame {
  position: relative; background: linear-gradient(180deg, rgba(11,26,44,.92), rgba(1,10,19,.96));
  border: 1px solid transparent; border-image: linear-gradient(180deg, var(--gold-2), var(--gold-5)) 1;
}
.frame::before, .frame::after {
  content: ""; position: absolute; width: 9px; height: 9px; background: var(--gold-2); transform: rotate(45deg); z-index: 2;
}
.frame::before { top: -5px; left: calc(50% - 4px); }
.frame::after { bottom: -5px; left: calc(50% - 4px); }

/* ---------- Build ---------- */
.builds { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 24px; }
.build {
  position: relative; display: flex; flex-direction: column; min-height: 420px; padding: 24px;
  background: var(--panel); overflow: hidden; text-align: left;
  border: 1px solid var(--gold-5); transition: border-color .25s, transform .25s, box-shadow .25s;
}
.build:hover { border-color: var(--gold-2); transform: translateY(-4px); box-shadow: 0 18px 40px rgba(0,0,0,.5), 0 0 0 1px rgba(200,170,110,.2); }
.build-art { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .5; transition: opacity .3s, transform .6s; }
.build:hover .build-art { opacity: .75; transform: scale(1.05); }
.build::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(1,10,19,.25) 0%, rgba(1,10,19,.78) 45%, var(--ink) 88%); }
.build > :not(.build-art) { position: relative; z-index: 1; }
.build-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.build-emblem { width: 44px; height: 44px; padding: 6px; border-radius: 50%; background: rgba(1,10,19,.75); border: 1px solid var(--gold-3); }
.build-count { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--gold-2); padding: 4px 10px; background: rgba(1,10,19,.75); border: 1px solid var(--gold-5); }
.build h3 { margin-top: auto; padding-top: 120px; font-size: 26px; letter-spacing: .06em; color: var(--gold-1); line-height: 1.2; }
.build-tag { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-2); }
.build-desc { margin-top: 8px; font-size: 14.5px; color: #b9b3a4; }
.items { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.items img { width: 40px; height: 40px; border: 1px solid var(--gold-4); background: var(--ink); }
.build-link { display: flex; align-items: center; gap: 8px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--gold-5); font-size: 13px; color: var(--gold-2); width: 100%; background: none; border-inline: 0; border-bottom: 0; text-align: left; }
.build-link:hover { color: var(--gold-1); }
.build-link svg { flex: none; color: var(--blue-2); }

/* ---------- Montage ---------- */
.feature { display: grid; grid-template-columns: 1.5fr 1fr; margin-bottom: 48px; }
.thumb { position: relative; display: block; width: 100%; padding: 0; border: 0; background: #000; aspect-ratio: 16 / 9; overflow: hidden; }
.thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s, filter .3s; }
.thumb:hover img { transform: scale(1.05); filter: brightness(1.12); }
.thumb::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 56px; height: 56px; transform: translate(-50%, -50%);
  border-radius: 50%; border: 2px solid var(--gold-2);
  background: rgba(1,10,19,.72) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 6l10 6-10 6z' fill='%23f0e6d2'/%3E%3C/svg%3E") center / 26px no-repeat;
  transition: box-shadow .2s, border-color .2s;
}
.thumb:hover::after { border-color: var(--blue-2); box-shadow: 0 0 22px rgba(10,200,185,.6); }
.dur { position: absolute; right: 8px; bottom: 8px; padding: 1px 6px; font-size: 12px; color: var(--gold-1); background: rgba(1,10,19,.85); border: 1px solid var(--gold-5); }
.feature-body { display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 12px; padding: clamp(20px, 3vw, 40px); }
.badge { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--ink); background: var(--gold-2); padding: 2px 10px; font-weight: 700; }
.feature-body h3 { font-size: clamp(22px, 2.6vw, 32px); line-height: 1.2; letter-spacing: .04em; color: var(--gold-1); }

.filters { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 32px; }
.filters button {
  min-height: 40px; padding: 0 18px; background: transparent; border: 1px solid var(--gold-5);
  font: 700 13px var(--serif); letter-spacing: .12em; text-transform: uppercase; color: var(--gold-2); transition: all .2s;
}
.filters button:hover { border-color: var(--gold-2); color: var(--gold-1); }
.filters button[aria-selected="true"] { color: var(--ink); background: linear-gradient(180deg, var(--gold-1), var(--gold-3)); border-color: var(--gold-1); }

.videos { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)); gap: 24px; }
.video { background: var(--panel); border: 1px solid var(--gold-5); transition: border-color .2s, transform .2s; }
.video:hover { border-color: var(--gold-2); transform: translateY(-3px); }
.video-meta { padding: 14px 16px 16px; }
.video-cat { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--blue-2); }
.video h3 { margin-top: 2px; font: 600 15px/1.4 var(--sans); text-transform: none; color: var(--text-hi); }
.video-views { margin-top: 6px; font-size: 13px; }

/* ---------- Tướng ---------- */
.champ { overflow: hidden; }
.champ-bg { position: absolute; inset: 0; z-index: -2; max-width: none; background: center 20% / cover no-repeat; opacity: .38; transition: opacity .4s; }
.champ::before { content: ""; position: absolute; inset: 0; z-index: -1; max-width: none; background: radial-gradient(ellipse at center, rgba(1,10,19,.35), var(--ink) 78%), linear-gradient(180deg, var(--ink), transparent 22%, transparent 75%, var(--ink)); }
.champ-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.ability-keys { display: flex; gap: 12px; }
.ability-keys button {
  position: relative; width: 64px; height: 64px; padding: 0; background: var(--ink);
  border: 2px solid var(--gold-4); transition: border-color .2s, transform .2s, box-shadow .2s;
}
.ability-keys img { width: 100%; height: 100%; filter: grayscale(.6) brightness(.75); transition: filter .2s; }
.ability-keys span { position: absolute; right: -2px; bottom: -2px; min-width: 22px; padding: 0 4px; font: 700 12px/20px var(--serif); color: var(--gold-1); background: var(--ink); border: 1px solid var(--gold-4); text-align: center; }
.ability-keys button:hover, .ability-keys button[aria-selected="true"] { border-color: var(--gold-1); transform: translateY(-4px); box-shadow: 0 0 18px rgba(200,170,110,.45); }
.ability-keys button[aria-selected="true"] img, .ability-keys button:hover img { filter: none; }
.ability-body { margin-top: 28px; padding-left: 20px; border-left: 2px solid var(--gold-3); min-height: 190px; }
.ability-body small { font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--blue-2); }
.ability-body h3 { font-size: 28px; letter-spacing: .05em; color: var(--gold-1); }
.ability-body p { margin-top: 10px; color: #c7c1b2; max-width: 520px; }
.skins-label { font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--blue-2); }
.skins-name { font: 700 22px var(--serif); color: var(--gold-1); min-height: 34px; }
.skin-strip { display: grid; grid-template-columns: repeat(auto-fill, minmax(72px, 1fr)); gap: 10px; margin-top: 14px; }
.skin-strip button { padding: 0; aspect-ratio: 308 / 560; overflow: hidden; background: var(--ink); border: 1px solid var(--gold-5); opacity: .6; transition: opacity .2s, border-color .2s, transform .2s; }
.skin-strip img { width: 100%; height: 100%; object-fit: cover; }
.skin-strip button:hover, .skin-strip button[aria-pressed="true"] { opacity: 1; border-color: var(--gold-1); transform: translateY(-3px); }
.skin-strip button[aria-pressed="true"] { box-shadow: 0 0 16px rgba(200,170,110,.5); }

/* ---------- Bảng vàng ---------- */
.fame { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 20px; counter-reset: fame; }
.fame li { counter-increment: fame; position: relative; background: var(--panel); border: 1px solid var(--gold-5); }
.fame li::before {
  content: counter(fame); position: absolute; top: -14px; left: 14px; z-index: 2; width: 34px; height: 34px;
  display: grid; place-items: center; font: 700 16px var(--serif); color: var(--ink);
  background: linear-gradient(180deg, var(--gold-1), var(--gold-3)); clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}
.fame-body { padding: 14px 16px 18px; }
.fame-views { font: 700 26px/1.2 var(--serif); color: var(--gold-1); }
.fame-views small { font: 400 12px var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--text); }
.fame-title { margin-top: 4px; font-size: 14px; color: #c7c1b2; }

.channel { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; margin-top: 64px; padding: clamp(20px, 3vw, 36px); }
.channel img { border-radius: 50%; border: 2px solid var(--gold-3); box-shadow: 0 0 22px rgba(200,155,60,.35); }
.channel h3 { font-size: 24px; letter-spacing: .06em; color: var(--gold-1); }

/* ---------- Chân trang ---------- */
.foot { padding: 48px var(--gutter) 56px; text-align: center; border-top: 1px solid var(--gold-5); background: #00060c; font-size: 13px; color: #6f6a5e; }
.foot p { max-width: 760px; margin-inline: auto; }
.foot-brand { margin-bottom: 12px; font-size: 20px; letter-spacing: .3em; color: var(--gold-2); }

/* ---------- Trình phát ---------- */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 16px; background: rgba(1,10,19,.9); backdrop-filter: blur(6px); }
.modal[hidden] { display: none; }
.modal-box { width: min(1100px, 100%); padding: 8px; box-shadow: 0 0 80px rgba(10,200,185,.18); }
.modal-video { aspect-ratio: 16 / 9; background: #000; }
.modal-video iframe { width: 100%; height: 100%; border: 0; display: block; }
.modal-close { position: absolute; top: -18px; right: -6px; z-index: 3; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); border: 2px solid var(--gold-3); color: var(--gold-1); }
.modal-close:hover { border-color: var(--gold-1); box-shadow: 0 0 14px rgba(200,170,110,.5); }

/* ---------- Nhạc nền ---------- */
.sound {
  position: fixed; right: 20px; bottom: 20px; z-index: 60; width: 48px; height: 48px; padding: 0;
  display: grid; place-items: center; border-radius: 50%; color: var(--gold-1);
  background: linear-gradient(180deg, #1e2328, var(--ink)); border: 2px solid var(--gold-3);
  box-shadow: 0 0 0 2px var(--ink), 0 6px 18px rgba(0,0,0,.5); transition: border-color .2s, box-shadow .2s, color .2s;
}
.sound:hover { border-color: var(--gold-1); box-shadow: 0 0 0 2px var(--ink), 0 0 16px rgba(200,170,110,.5); }
.sound .sound-off { display: none; }
.sound[aria-pressed="true"] { color: var(--text); border-color: var(--gold-4); }
.sound[aria-pressed="true"] .sound-on { display: none; }
.sound[aria-pressed="true"] .sound-off { display: block; }

/* ---------- Hiện dần ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s, transform .7s; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Màn hình nhỏ ---------- */
@media (max-width: 960px) {
  .feature, .champ-grid { grid-template-columns: 1fr; }
  .channel { grid-template-columns: auto 1fr; }
  .channel .btn-hex { grid-column: 1 / -1; }
}
@media (max-width: 820px) {
  :root { --nav-h: 104px; }
  .nav { flex-wrap: wrap; gap: 0 16px; padding-top: 8px; align-content: space-between; }
  .brand { margin-right: auto; font-size: 16px; }
  .brand img { width: 34px; height: 34px; }
  .btn-play { height: 36px; padding: 0 18px; font-size: 13px; }
  .tabs { order: 3; flex: 0 0 calc(100% + 2 * var(--gutter)); height: 44px; margin: 0 calc(-1 * var(--gutter)); padding: 0 calc(var(--gutter) - 12px); overflow-x: auto; scrollbar-width: none; }
  .tabs::-webkit-scrollbar { display: none; }
  .tabs a { padding: 0 12px; font-size: 13px; white-space: nowrap; }
  .tabs a::after { left: 12px; right: 12px; }
  .hero { align-items: flex-end; padding-bottom: 80px; }
  .hero-bg { background-position: 68% 0; }
  .hero::before { background: linear-gradient(0deg, var(--ink) 8%, rgba(1,10,19,.86) 48%, rgba(1,10,19,.2) 100%); }
  .hero-cta > * { flex: 1 1 100%; }
  .stats { display: grid; grid-template-columns: 1fr 1fr; }
  .stats div, .stats div:last-child { margin: 0; padding: 14px 0 0; border: 0; }
  .title h2 { gap: 12px; }
  .title h2::before, .title h2::after { flex-basis: 28px; min-width: 16px; }
  .build { min-height: 0; }
  .build h3 { padding-top: 96px; }
  .ability-keys { gap: 8px; }
  .ability-keys button { width: 56px; height: 56px; }
}
/* ================= Trang con ================= */
.page-head { position: relative; padding: calc(var(--nav-h) + clamp(48px, 8vw, 96px)) var(--gutter) clamp(40px, 6vw, 72px); isolation: isolate; overflow: hidden; border-bottom: 1px solid var(--gold-5); }
.page-head::before { content: ""; position: absolute; inset: 0; z-index: -2; background: var(--art) center 22% / cover no-repeat; opacity: .55; }
.page-head::after { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(ellipse at center, rgba(1,10,19,.45), var(--ink) 85%), linear-gradient(0deg, var(--ink), transparent 60%); }
.page-head .title { margin-bottom: 0; }
.page-head h1 { margin-top: 6px; font-size: clamp(36px, 6vw, 72px); line-height: 1.1; letter-spacing: .05em; color: var(--gold-1); text-shadow: 0 4px 24px rgba(0,0,0,.7); }
.page-head .sub { color: #c7c1b2; }
.subhead { display: flex; align-items: center; gap: 16px; margin: 56px auto 24px; font: 700 22px var(--serif); letter-spacing: .1em; text-transform: uppercase; color: var(--gold-1); }
.subhead:first-child { margin-top: 0; }
.subhead::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--gold-4), transparent); }
.empty { padding: 48px 16px; text-align: center; border: 1px dashed var(--gold-5); color: var(--text); }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 32px; }
.toolbar .filters { margin: 0; justify-content: flex-start; }

/* ---------- Giới thiệu + tài khoản ---------- */
.about { display: grid; grid-template-columns: auto 1fr; gap: 32px; align-items: center; max-width: 900px; }
.about img { border-radius: 50%; border: 2px solid var(--gold-3); box-shadow: 0 0 0 4px var(--ink), 0 0 0 5px var(--gold-5), 0 0 30px rgba(200,155,60,.3); }
.about p { color: #c7c1b2; font-size: 17px; }
.about p + p { margin-top: 12px; }
.accounts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 20px; }
.account { position: relative; padding: 20px; text-align: center; background: linear-gradient(180deg, var(--panel), var(--ink)); border: 1px solid var(--gold-5); transition: border-color .2s, transform .2s; }
.account:hover { border-color: var(--gold-2); transform: translateY(-3px); }
.account-emblem { width: 96px; height: 96px; margin: 0 auto 4px; object-fit: contain; filter: drop-shadow(0 4px 14px rgba(0,0,0,.6)); }
.account h3 { font-size: 20px; letter-spacing: .04em; text-transform: none; color: var(--gold-1); overflow-wrap: anywhere; }
.account h3 span { margin-left: 4px; font: 400 14px var(--sans); color: var(--text); }
.account-rank { margin-top: 2px; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-2); }
.account-rank b { color: var(--gold-2); font-weight: 600; }
.account-bar { height: 4px; margin: 14px 0; background: #5b2a2a; }
.account-bar span { display: block; width: var(--wr); height: 100%; background: var(--blue-2); }
.account dl { display: grid; gap: 4px; text-align: left; font-size: 13.5px; }
.account dl div { display: flex; justify-content: space-between; gap: 12px; }
.account dd { color: var(--text-hi); }
.account-actions { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-top: 16px; }
.account-actions > * { min-height: 36px; display: grid; place-items: center; padding: 0 12px; font: 700 12px var(--serif); letter-spacing: .12em; text-transform: uppercase; color: var(--gold-2); background: rgba(30,35,40,.7); border: 1px solid var(--gold-5); transition: color .2s, border-color .2s; }
.account-actions > *:hover { color: var(--gold-1); border-color: var(--gold-2); }

/* ---------- Biểu mẫu ---------- */
.sheet { width: min(640px, calc(100% - 24px)); max-height: calc(100dvh - 24px); padding: 0; overflow: auto; color: var(--text); background: linear-gradient(180deg, #0b1a2c, var(--ink)); border: 1px solid var(--gold-3); box-shadow: 0 0 80px rgba(0,0,0,.8); }
.sheet-wide { width: min(900px, calc(100% - 24px)); }
.sheet::backdrop { background: rgba(1,10,19,.88); backdrop-filter: blur(6px); }
.form { display: grid; gap: 16px; padding: clamp(20px, 4vw, 32px); }
.form h2 { font-size: 24px; letter-spacing: .06em; color: var(--gold-1); }
.form label { display: grid; gap: 6px; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--gold-2); }
.form small { letter-spacing: 0; text-transform: none; color: #6f6a5e; }
.form input:not([type=radio]):not([type=file]), .form textarea { width: 100%; padding: 10px 12px; font: 400 15px var(--sans); color: var(--text-hi); background: #030d17; border: 1px solid var(--gold-5); border-radius: 0; color-scheme: dark; }
.form textarea { resize: vertical; }
.form input:focus, .form textarea:focus { outline: 0; border-color: var(--gold-2); box-shadow: 0 0 0 1px var(--gold-2); }
.form input[type=file] { font: 400 14px var(--sans); color: var(--text); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.choice { display: flex; gap: 8px; margin: 0; padding: 0; border: 0; }
.choice legend { margin-bottom: 6px; padding: 0; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--gold-2); }
.choice label { display: block; flex: 1; }
.choice input { position: absolute; opacity: 0; }
.choice span { display: grid; place-items: center; min-height: 44px; font: 700 14px var(--serif); letter-spacing: .12em; color: var(--gold-2); border: 1px solid var(--gold-5); cursor: pointer; }
.choice input:checked + span { color: var(--ink); background: linear-gradient(180deg, var(--gold-1), var(--gold-3)); border-color: var(--gold-1); }
.choice input:focus-visible + span { outline: 2px solid var(--blue-2); outline-offset: 2px; }
.trap { position: absolute !important; left: -9999px; }
.form-actions { display: flex; justify-content: flex-end; gap: 12px; flex-wrap: wrap; }
.form-msg { min-height: 1.5em; font-size: 14px; color: #e0736b; }
.form-msg.ok { color: var(--blue-2); }
.form-note { font-size: 13px; color: #6f6a5e; }
.form-inline { grid-template-columns: 1fr auto; align-items: end; max-width: 520px; padding: 0; }
.form-inline .form-msg { grid-column: 1 / -1; }

/* ---------- Cộng đồng ---------- */
.posts { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 24px; }
.post { display: flex; flex-direction: column; width: 100%; padding: 0; text-align: left; background: var(--panel); border: 1px solid var(--gold-5); transition: border-color .2s, transform .2s; }
.post:hover { border-color: var(--gold-2); transform: translateY(-3px); }
.post-media { aspect-ratio: 16 / 9; background: #030d17 center / cover no-repeat; border-bottom: 1px solid var(--gold-5); }
.post-body { padding: 14px 16px 16px; }
.post-type { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--blue-2); }
.post h3 { margin-top: 2px; font: 600 16px/1.4 var(--sans); text-transform: none; color: var(--text-hi); }
.post-text { margin-top: 6px; font-size: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.post-by { margin-top: 10px; font-size: 13px; color: var(--gold-2); }
.post-by span { color: #6f6a5e; }
.view { padding: clamp(20px, 4vw, 32px); }
.view h2 { font-size: 26px; letter-spacing: .04em; color: var(--gold-1); }
.view-media { margin: 16px 0; aspect-ratio: 16 / 9; background: #000; }
.view-media iframe { width: 100%; height: 100%; border: 0; }
.view img { margin: 16px 0; max-height: 70vh; }
.view-text { white-space: pre-wrap; overflow-wrap: anywhere; color: #c7c1b2; }
.view-link { display: inline-block; margin-top: 12px; color: var(--blue-2); text-decoration: underline; overflow-wrap: anywhere; }
.view .form-actions { margin-top: 24px; }

/* ---------- Sự kiện ---------- */
.events { display: grid; gap: 16px; }
.event { display: grid; grid-template-columns: 96px 1fr; background: var(--panel); border: 1px solid var(--gold-5); }
.event-date { display: grid; place-content: center; padding: 12px; text-align: center; background: rgba(200,170,110,.08); border-right: 1px solid var(--gold-5); }
.event-date b { font: 700 34px/1 var(--serif); color: var(--gold-1); }
.event-date span { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--gold-2); }
.event-body { padding: 16px 20px; }
.event-when { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--blue-2); }
.event h3 { font-size: 22px; letter-spacing: .04em; color: var(--gold-1); }
.event-text { margin-top: 6px; white-space: pre-wrap; overflow-wrap: anywhere; color: #c7c1b2; }
.event-link { display: inline-block; margin-top: 10px; color: var(--gold-2); text-decoration: underline; text-underline-offset: 3px; }
.events-past .event { opacity: .7; }

/* ---------- Mini game ---------- */
.arcade { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 24px; align-items: start; }
.stage { position: relative; border: 1px solid var(--gold-3); background: #030d17; touch-action: none; user-select: none; -webkit-user-select: none; }
.stage canvas { display: block; width: 100%; height: auto; cursor: crosshair; }
.hud { position: absolute; left: 12px; top: 10px; right: 12px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 20px; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--gold-2); pointer-events: none; }
.hud b { font: 700 18px var(--serif); color: var(--gold-1); }
.meter { display: flex; align-items: center; gap: 8px; }
.meter i { width: 90px; height: 6px; background: rgba(240,230,210,.15); }
.meter u { display: block; width: 0; height: 100%; background: var(--blue-2); }
.wall-btn { position: absolute; right: 14px; bottom: 14px; width: 64px; height: 64px; display: none; border-radius: 50%; font: 700 22px var(--serif); color: var(--blue-1); background: rgba(10,30,40,.85); border: 2px solid var(--blue-2); }
.wall-btn:disabled { opacity: .4; }
@media (pointer: coarse) { .wall-btn { display: block; } }
.overlay { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 16px; padding: 24px; text-align: center; background: rgba(1,10,19,.82); }
.overlay[hidden] { display: none; }
.overlay h2 { font-size: clamp(28px, 5vw, 48px); letter-spacing: .08em; color: var(--gold-1); }
.overlay p { max-width: 420px; color: #c7c1b2; }
kbd { padding: 1px 6px; font: 600 13px var(--sans); color: var(--gold-1); border: 1px solid var(--gold-4); background: #030d17; }
.score-form { display: flex; gap: 8px; }
.score-form[hidden] { display: none; }
.score-form input { width: 180px; padding: 0 12px; font: 400 15px var(--sans); color: var(--text-hi); background: #030d17; border: 1px solid var(--gold-5); }
.board { padding: 20px; background: var(--panel); border: 1px solid var(--gold-5); }
.board h2 { font-size: 20px; letter-spacing: .1em; color: var(--gold-1); padding-bottom: 12px; margin-bottom: 8px; border-bottom: 1px solid var(--gold-5); }
.board ol { counter-reset: s; }
.board li { counter-increment: s; display: grid; grid-template-columns: 28px 1fr auto; gap: 8px; padding: 6px 0; font-size: 14px; border-bottom: 1px solid var(--line); }
.board li::before { content: counter(s); color: var(--gold-4); font-family: var(--serif); }
.board li span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-hi); }
.board li b { color: var(--gold-2); font-variant-numeric: tabular-nums; }
.board li:nth-child(-n+3)::before { color: var(--gold-1); }
.board .empty { padding: 20px 0; border: 0; }
.board-best { margin-top: 14px; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; }
.board-best b { color: var(--gold-1); }
.rules { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 16px; margin-top: 32px; padding: 0; list-style: none; font-size: 14.5px; }
.rules li { padding-left: 14px; border-left: 2px solid var(--gold-4); }
.rules b { display: block; font: 700 14px var(--serif); letter-spacing: .12em; text-transform: uppercase; color: var(--gold-1); }

/* ---------- Quản trị ---------- */
.admin-list { display: grid; gap: 12px; margin-bottom: 24px; }
.admin-item { padding: 14px 16px; background: var(--panel); border: 1px solid var(--gold-5); }
.admin-item[data-status="pending"] { border-color: var(--gold-2); }
.admin-item h3 { font: 600 16px var(--sans); text-transform: none; color: var(--text-hi); }
.admin-item p { margin-top: 4px; font-size: 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
.admin-item img { max-height: 160px; margin-top: 8px; }
.admin-item .meta { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--blue-2); }
.admin-item .form-actions { justify-content: flex-start; margin-top: 10px; }
.admin-item .form-actions button { min-height: 34px; padding: 0 14px; font: 700 12px var(--serif); letter-spacing: .12em; text-transform: uppercase; color: var(--gold-2); background: none; border: 1px solid var(--gold-5); }
.admin-item .form-actions button:hover { color: var(--gold-1); border-color: var(--gold-2); }
.admin #eventForm { padding: 0; margin-bottom: 24px; }

@media (max-width: 960px) {
  .arcade { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .about { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .about img { width: 120px; height: 120px; }
  .form-row { grid-template-columns: 1fr; }
  .event { grid-template-columns: 72px 1fr; }
  .event-date b { font-size: 26px; }
  .toolbar .btn-hex { width: 100%; }
  .meter i { width: 56px; }
}

/* ================= Trang chủ mới, skin, bình luận ================= */
.hero-home .hero-bg { background-image: url("https://ddragon.leagueoflegends.com/cdn/img/champion/splash/Yasuo_87.jpg"); background-position: 70% 20%; }
.hero-home h1 { width: auto; font-size: clamp(40px, 7.4vw, 96px); letter-spacing: .03em; }
.duo { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.duo .subhead { margin-top: 0; }
.duo-more { margin-top: 16px; }
.duo-more a { color: var(--gold-2); text-decoration: underline; text-underline-offset: 3px; }
.duo-more a:hover { color: var(--gold-1); }
a.post { color: inherit; }
.post-stats { display: flex; gap: 14px; margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--gold-5); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text); }
.post-stats b { color: var(--gold-1); font-weight: 600; }

/* ---------- Custom skins ---------- */
.skins-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 270px), 1fr)); gap: 24px; }
.skin { display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--gold-5); transition: border-color .2s, transform .2s; }
.skin:hover { border-color: var(--gold-2); transform: translateY(-3px); }
.skin-art { position: relative; aspect-ratio: 16 / 10; background: #030d17 center 18% / cover no-repeat; border-bottom: 1px solid var(--gold-5); }
.skin-art.is-blank { background-image: linear-gradient(180deg, rgba(1,10,19,.35), rgba(1,10,19,.9)), url("https://ddragon.leagueoflegends.com/cdn/img/champion/splash/Yasuo_0.jpg"); }
.skin-art.is-blank::after { content: "No preview yet"; position: absolute; left: 12px; bottom: 10px; font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--text); }
.skin-body { display: flex; flex-direction: column; flex: 1; padding: 16px; }
.skin h3 { font-size: 20px; letter-spacing: .04em; text-transform: none; color: var(--gold-1); }
.skin-by { font-size: 13px; color: var(--text); overflow-wrap: anywhere; }
.skin-desc { margin-top: 8px; font-size: 14px; color: #b9b3a4; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.skin-meta { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: auto 0 0; padding-top: 14px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--blue-2); }
.skin .btn-hex { margin-top: 12px; min-height: 44px; font-size: 14px; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); gap: 20px; counter-reset: step; }
.steps li { counter-increment: step; position: relative; padding: 20px 20px 20px 72px; background: rgba(1,10,19,.6); border: 1px solid var(--gold-5); }
.steps li::before { content: counter(step); position: absolute; left: 18px; top: 18px; width: 38px; height: 38px; display: grid; place-items: center; font: 700 18px var(--serif); color: var(--ink); background: linear-gradient(180deg, var(--gold-1), var(--gold-3)); clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); }
.steps h3 { font-size: 18px; letter-spacing: .06em; color: var(--gold-1); }
.steps p { margin-top: 4px; font-size: 15px; color: #c7c1b2; }
.steps b { color: var(--gold-1); font-weight: 600; }
.steps a { color: var(--blue-2); text-decoration: underline; text-underline-offset: 3px; }
.notes { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 20px; margin-top: 40px; }
.notes > div { padding-left: 14px; border-left: 2px solid var(--gold-4); }
.notes h3 { font-size: 15px; letter-spacing: .12em; color: var(--gold-1); }
.notes p { margin-top: 4px; font-size: 14.5px; }

/* ---------- Bình luận ---------- */
.view-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--gold-5); }
.like { display: inline-flex; align-items: center; gap: 8px; min-height: 38px; padding: 0 16px; font: 700 13px var(--serif); letter-spacing: .12em; text-transform: uppercase; color: var(--gold-2); background: none; border: 1px solid var(--gold-5); transition: color .2s, border-color .2s; }
.like:hover { color: var(--gold-1); border-color: var(--gold-2); }
.like[aria-pressed="true"] { color: var(--ink); background: linear-gradient(180deg, var(--gold-1), var(--gold-3)); border-color: var(--gold-1); }
.view-bar .btn-gold { margin-left: auto; min-height: 38px; }
.comments { margin-top: 24px; }
.comments h3 { font-size: 16px; letter-spacing: .12em; color: var(--gold-1); }
.comment { padding: 12px 0; border-bottom: 1px solid var(--line); }
.comment b { color: var(--gold-2); font-weight: 600; }
.comment time { margin-left: 8px; font-size: 12px; color: #6f6a5e; }
.comment p { margin-top: 2px; white-space: pre-wrap; overflow-wrap: anywhere; color: #c7c1b2; }
.comments .empty { margin-top: 12px; padding: 20px; }
.comment-form { display: grid; grid-template-columns: 180px 1fr auto; gap: 8px; align-items: start; margin-top: 16px; padding: 0; }
.comment-form textarea { min-height: 42px; }
.comment-form .btn-gold { min-height: 42px; padding: 0 20px; }
.comment-form .form-msg { grid-column: 1 / -1; }

@media (max-width: 860px) {
  .duo { grid-template-columns: minmax(0, 1fr); }
  .comment-form { grid-template-columns: 1fr; }
}

/* ================= Tài khoản ================= */
.nav-account { position: relative; }
.form [hidden] { display: none; }
button.btn-play { cursor: pointer; }
.account-menu summary { list-style: none; cursor: pointer; max-width: 200px; overflow: hidden; text-overflow: ellipsis; display: block; line-height: 36px; }
.account-menu summary::-webkit-details-marker { display: none; }
.account-menu > div { position: absolute; right: 0; top: calc(100% + 10px); z-index: 60; min-width: 200px; display: grid; background: #0b1a2c; border: 1px solid var(--gold-3); box-shadow: 0 12px 32px rgba(0,0,0,.6); }
.account-menu > div > * { padding: 12px 16px; text-align: left; font: 700 13px var(--serif); letter-spacing: .12em; text-transform: uppercase; color: var(--gold-2); background: none; border: 0; border-bottom: 1px solid var(--gold-5); }
.account-menu > div > *:last-child { border-bottom: 0; }
.account-menu > div > *:hover { color: var(--gold-1); background: rgba(200,170,110,.08); }
.link { padding: 0; font: inherit; color: var(--blue-2); background: none; border: 0; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.link:hover { color: var(--blue-1); }
.comment .link { margin-left: 10px; font-size: 12px; }
.comment-form { grid-template-columns: 1fr auto; }
.comments [data-signin] { margin-top: 16px; }
@media (max-width: 860px) { .comment-form { grid-template-columns: 1fr; } }

/* ================= Trang xin ý kiến ================= */
.soon { align-items: flex-start; min-height: 0; padding-bottom: 64px; }
.soon .hero-bg { background-position: 70% 18%; }
.soon::before { background: linear-gradient(90deg, var(--ink) 0%, rgba(1,10,19,.9) 40%, rgba(1,10,19,.35) 75%, rgba(1,10,19,.65) 100%), linear-gradient(0deg, var(--ink) 0%, transparent 30%); }
.soon-inner { width: 100%; max-width: 640px; }
.soon-form { margin-top: 32px; }
.soon-form .btn-hex { min-width: 180px; }
.subhead span { font: 400 16px var(--sans); letter-spacing: 0; color: var(--text); }
.ideas { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 16px; }
.idea { padding: 16px 18px; background: var(--panel); border: 1px solid var(--gold-5); border-left: 2px solid var(--gold-3); }
.idea-by b { color: var(--gold-1); font-weight: 600; }
.idea-by time { margin-left: 10px; font-size: 12px; color: #6f6a5e; }
.idea-text { margin-top: 6px; white-space: pre-wrap; overflow-wrap: anywhere; color: #c7c1b2; }
@media (max-width: 820px) {
  .soon::before { background: linear-gradient(0deg, var(--ink) 30%, rgba(1,10,19,.82) 70%, rgba(1,10,19,.45) 100%); }
  :root:has(.soon) { --nav-h: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}