/* Billion Relay — toy-shop gacha. Paper, ink, candy colors, hard shadows.
   Deliberately no gradients-on-dark / glass: this should feel like a sticker sheet. */

:root {
  --paper: #fff4df;
  --paper-2: #ffe9c2;
  --ink: #1d1a16;
  --ink-2: #5b5247;
  --tomato: #ff5a36;
  --sun: #ffc93c;
  --mint: #3dd6a3;
  --sky: #4d8dff;
  --pink: #ff8fc7;
  --grape: #9b6bff;
  --line: 3px solid var(--ink);
  --shadow: 5px 5px 0 var(--ink);
  --shadow-s: 3px 3px 0 var(--ink);
  --r: 18px;
  --sans: "Bricolage Grotesque", ui-sans-serif, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "DM Mono", ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink); font: 17px/1.5 var(--sans);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgb(29 26 22 / 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgb(29 26 22 / 0.055) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration-thickness: 2px; text-underline-offset: 3px; }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 3px dashed var(--sky); outline-offset: 3px; }
[hidden] { display: none !important; }

.card { background: #fff; border: var(--line); border-radius: var(--r); box-shadow: var(--shadow); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; border: var(--line); border-radius: 14px; background: #fff;
  font-weight: 600; box-shadow: var(--shadow-s);
  transition: transform 0.08s, box-shadow 0.08s, background 0.15s;
}
.btn:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
.btn:active { transform: translate(3px, 3px); box-shadow: 0 0 0 var(--ink); }
.btn:disabled { opacity: 0.55; cursor: default; transform: none; box-shadow: var(--shadow-s); }
.btn.big {
  width: 100%; padding: 16px 20px; font-size: 22px; font-weight: 800; letter-spacing: -0.01em;
  background: var(--tomato); color: #fff; box-shadow: var(--shadow);
}
.btn.big:hover { background: #ff6a49; }
.btn.big:active { box-shadow: 0 0 0 var(--ink); transform: translate(5px, 5px); }
.btn.ok { background: var(--mint); }
.btn.bad { background: #fff; }
.btn.ok.on { background: var(--mint); outline: 3px solid var(--ink); }
.btn.bad.on { background: var(--tomato); color: #fff; }
.link { border: 0; background: none; padding: 6px 0; font-weight: 600; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }

/* ---------- header ---------- */
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  width: min(1160px, 100% - 32px); margin: 0 auto; padding: 18px 0;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; text-decoration: none; letter-spacing: -0.02em; }
.brand-badge {
  display: grid; place-items: center; width: 40px; height: 40px; border: var(--line); border-radius: 50%;
  background: var(--sun); font: 800 14px var(--sans); box-shadow: var(--shadow-s); transform: rotate(-8deg);
}
.top nav { display: flex; align-items: center; gap: 22px; font-weight: 600; font-size: 15px; }
.top nav a { text-decoration: none; }
.top nav a:hover { text-decoration: underline; }
.lang { border: var(--line); background: #fff; border-radius: 999px; padding: 4px 12px; font-weight: 700; font-size: 14px; box-shadow: 2px 2px 0 var(--ink); }

/* ---------- hero ---------- */
main { width: min(1160px, 100% - 32px); margin: 0 auto; }
.hero { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(28px, 5vw, 70px); align-items: start; padding: clamp(20px, 5vh, 60px) 0 50px; }
.hero-text { position: relative; padding-top: 20px; }
.kicker { display: inline-block; margin: 0 0 18px; padding: 4px 12px; border: 2px solid var(--ink); border-radius: 999px; background: #fff; font-size: 14px; font-weight: 600; }
h1 { margin: 0; font-size: clamp(48px, 7.2vw, 92px); line-height: 0.96; font-weight: 800; letter-spacing: -0.045em; }
h1 mark {
  background: none; color: inherit; position: relative; white-space: nowrap;
  background-image: linear-gradient(transparent 58%, var(--sun) 58%, var(--sun) 92%, transparent 92%);
}
.sub { max-width: 32em; margin: 22px 0 26px; font-size: clamp(17px, 1.5vw, 20px); color: var(--ink-2); }
.facts { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; list-style: none; }
.facts li { padding: 7px 14px; border: var(--line); border-radius: 12px; font-weight: 700; font-size: 15px; box-shadow: var(--shadow-s); }
.facts .f1 { background: var(--sun); transform: rotate(-2deg); }
.facts .f2 { background: var(--pink); transform: rotate(1.5deg); }
.facts .f3 { background: var(--sky); color: #fff; transform: rotate(-1deg); }
.doodle { position: absolute; fill: var(--sun); stroke: var(--ink); stroke-width: 2.5; }
.doodle.star { width: 46px; right: 8%; top: -6px; animation: twirl 9s linear infinite; }
@keyframes twirl { to { transform: rotate(360deg); } }

/* ---------- gacha machine ---------- */
.play { display: grid; gap: 14px; justify-items: center; }
.gacha { position: relative; width: 250px; }
.dome {
  position: relative; width: 250px; height: 220px; border: var(--line); border-bottom: 0;
  border-radius: 125px 125px 18px 18px; overflow: hidden;
  background: radial-gradient(circle at 30% 25%, #fff 0 18%, #e9f5ff 60%, #d6ebff);
}
.cap {
  position: absolute; left: var(--x); top: var(--y); width: 52px; height: 52px; border: 3px solid var(--ink); border-radius: 50%;
  background: linear-gradient(to bottom, var(--c) 50%, #fff 50%);
  transform: rotate(var(--r));
  box-shadow: inset -5px -5px 0 rgb(0 0 0 / 0.08);
}
.cap::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; border-top: 3px solid var(--ink); transform: translateY(-1.5px); }
.dome.shake .cap { animation: tumble 0.28s ease-in-out infinite alternate; }
.dome.shake .cap:nth-child(2n) { animation-duration: 0.22s; animation-direction: alternate-reverse; }
.dome.shake .cap:nth-child(3n) { animation-duration: 0.33s; }
@keyframes tumble {
  from { transform: translate(0, 0) rotate(var(--r)); }
  to { transform: translate(6px, -14px) rotate(calc(var(--r) + 60deg)); }
}
.shine { position: absolute; left: 34px; top: 26px; width: 34px; height: 80px; border-radius: 30px; background: rgb(255 255 255 / 0.8); transform: rotate(24deg); }
.body {
  position: relative; height: 150px; border: var(--line); border-radius: 0 0 26px 26px;
  background: var(--tomato); box-shadow: var(--shadow);
}
.plate { position: absolute; left: 50%; top: 12px; transform: translateX(-50%); padding: 2px 10px; background: var(--sun); border: 2px solid var(--ink); border-radius: 6px; font: 500 12px var(--mono); letter-spacing: 0.12em; white-space: nowrap; }
.knob {
  position: absolute; left: 34px; top: 48px; width: 78px; height: 78px; border: var(--line); border-radius: 50%;
  background: #fff; box-shadow: var(--shadow-s); padding: 0;
  transition: transform 0.9s cubic-bezier(0.5, 0, 0.3, 1.3);
}
.knob span { position: absolute; left: 50%; top: 8px; bottom: 8px; width: 18px; transform: translateX(-50%); border: 3px solid var(--ink); border-radius: 10px; background: var(--sun); }
.knob.turn { transform: rotate(540deg); }
.chute { position: absolute; right: 30px; bottom: 22px; width: 88px; height: 70px; border: var(--line); border-radius: 14px; background: #2b2520; overflow: hidden; }
.drop {
  position: absolute; left: 16px; top: -60px; width: 54px; height: 54px; border: 3px solid var(--ink); border-radius: 50%;
  background: linear-gradient(to bottom, var(--dc, var(--sun)) 50%, #fff 50%); opacity: 0;
}
.drop.fall { animation: fall 0.7s cubic-bezier(0.4, 0, 0.6, 1.4) forwards; }
@keyframes fall { 0% { top: -60px; opacity: 1; transform: rotate(0); } 100% { top: 8px; opacity: 1; transform: rotate(200deg); } }
.pull-hint { margin: -2px 0 0; font-size: 14px; color: var(--ink-2); }
.play .btn.big { max-width: 360px; }

/* ---------- result ---------- */
.result { width: 100%; max-width: 420px; padding: 18px 20px 16px; background: var(--paper-2); transform-origin: 50% 0; animation: pop 0.45s cubic-bezier(0.2, 1.6, 0.4, 1); }
@keyframes pop { from { transform: scale(0.6) rotate(-4deg); opacity: 0; } }
.result-head { display: flex; justify-content: space-between; align-items: center; }
.label { font-weight: 700; font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; }
.stamp { padding: 2px 10px; border: 3px solid var(--mint); color: #108a62; border-radius: 8px; font: 500 13px var(--mono); letter-spacing: 0.14em; transform: rotate(6deg); opacity: 0; }
.stamp.on { animation: stamp 0.35s cubic-bezier(0.2, 1.8, 0.4, 1) forwards; }
@keyframes stamp { from { transform: scale(2.2) rotate(-10deg); opacity: 0; } to { transform: scale(1) rotate(6deg); opacity: 1; } }
.result-code {
  display: block; width: 100%; margin: 10px 0 12px; padding: 12px 0; border: var(--line); border-radius: 14px; background: #fff;
  font: 500 clamp(40px, 6vw, 54px) var(--mono); letter-spacing: 0.18em; text-indent: 0.18em; text-align: center;
  box-shadow: var(--shadow-s);
}
.result-code:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.uses { margin-bottom: 14px; }
.result .uses-bar { height: 14px; }
.uses-bar { display: grid; grid-template-columns: repeat(30, 1fr); gap: 2px; height: 12px; }
.uses-bar i { border-radius: 2px; background: rgb(29 26 22 / 0.12); }
.uses-bar i.on { background: var(--mint); outline: 1px solid rgb(29 26 22 / 0.35); }
.uses-bar.low i.on { background: var(--tomato); }
.uses-line { margin-top: 6px; font-size: 15px; }
.uses-line span { color: var(--ink-2); font-size: 13px; }
.todo { margin: 0 0 12px; padding-left: 0; list-style: none; counter-reset: s; display: grid; gap: 6px; font-size: 15.5px; }
.todo li { counter-increment: s; display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; }
.todo a { font-weight: 600; }
.todo li::before { content: counter(s); flex: none; display: grid; place-items: center; width: 22px; height: 22px; border: 2px solid var(--ink); border-radius: 50%; background: #fff; font-weight: 800; font-size: 12px; }
.verdict { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.thanks { margin: 10px 0 0; font-weight: 600; }

/* ---------- ticker ---------- */
.ticker { margin: 10px calc(50% - 50vw) 0; border-block: var(--line); background: var(--ink); color: var(--paper); overflow: hidden; transform: rotate(-1.2deg); }
.ticker-track { display: flex; width: max-content; padding: 10px 0; font: 500 15px var(--mono); letter-spacing: 0.06em; animation: marquee 32s linear infinite; }
.ticker-track span { padding: 0 22px; white-space: nowrap; }
.ticker-track span b { color: var(--sun); font-weight: 500; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- shelf ---------- */
.shelf { padding: 80px 0 20px; }
.head { display: flex; justify-content: space-between; align-items: end; gap: 16px; flex-wrap: wrap; margin-bottom: 26px; }
h2 { margin: 0; font-size: clamp(30px, 3.6vw, 44px); line-height: 1.05; letter-spacing: -0.035em; font-weight: 800; }
.head p { margin: 6px 0 0; color: var(--ink-2); }
.sorts { display: flex; border: var(--line); border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-s); background: #fff; }
.sorts button { border: 0; border-right: 2px solid var(--ink); background: none; padding: 8px 14px; font-weight: 600; font-size: 14px; }
.sorts button:last-child { border-right: 0; }
.sorts button.on { background: var(--ink); color: var(--paper); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 22px; }
.empty { grid-column: 1 / -1; text-align: center; padding: 40px; color: var(--ink-2); }
.code-card {
  position: relative; padding: 16px 16px 14px; background: var(--bgc, #fff);
  transform: rotate(var(--tilt, 0deg)); transition: transform 0.18s;
  animation: in 0.4s both; animation-delay: calc(var(--i) * 40ms);
}
@keyframes in { from { opacity: 0; transform: translateY(16px) rotate(var(--tilt, 0deg)); } }
.code-card:hover { transform: rotate(0) translateY(-3px); }
.cc-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; min-height: 26px; }
.cc-rank { font: 500 13px var(--mono); }
.badge { padding: 2px 8px; border: 2px solid var(--ink); border-radius: 999px; font-size: 12px; font-weight: 700; background: #fff; white-space: nowrap; }
.badge.ok { background: var(--mint); }
.badge.hot { background: var(--sun); }
.badge.low { background: var(--tomato); color: #fff; }
.cc-code { display: block; width: 100%; margin: 10px 0; padding: 8px 0; border: var(--line); border-radius: 12px; background: #fff; font: 500 30px var(--mono); letter-spacing: 0.14em; text-indent: 0.14em; text-align: center; }
.cc-code:hover { background: var(--paper); }
.cc-meta { display: flex; justify-content: space-between; align-items: baseline; margin-top: 6px; font-size: 14px; }
.cc-meta span { color: var(--ink-2); font-size: 13px; }
.cc-acts { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 6px; margin-top: 12px; }
.cc-acts .btn { padding: 7px 6px; font-size: 14px; border-width: 2px; box-shadow: 2px 2px 0 var(--ink); }
.cc-acts .btn:active { box-shadow: 0 0 0 var(--ink); transform: translate(2px, 2px); }
.gone { margin-top: 26px; font: 500 14px var(--mono); color: var(--ink-2); }
.gone s { margin-right: 10px; }

/* ---------- rules ---------- */
.rules { padding: 90px 0 20px; }
.rule-grid { list-style: none; padding: 0; margin: 26px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.rule { position: relative; padding: 20px 22px 22px; }
.rule .rn { display: inline-block; font: 500 14px var(--mono); padding: 2px 9px; border: 2px solid var(--ink); border-radius: 999px; background: #fff; color: var(--ink); }
.rule h3 { margin: 14px 0 8px !important; font-size: 24px !important; line-height: 1.15; letter-spacing: -0.02em; }
.rule p { margin: 0; font-size: 16px; }
.r1 { background: var(--sun); transform: rotate(-0.8deg); }
.r2 { background: var(--tomato); color: #fff; transform: rotate(0.6deg); }
.r3 { background: #fff; transform: rotate(-0.4deg); }
.r4 { background: var(--mint); transform: rotate(0.7deg); }
.r5 { background: var(--pink); transform: rotate(-0.6deg); }
.r6 { background: var(--sky); color: #fff; transform: rotate(0.5deg); }
.path { display: block; margin-top: 10px; padding: 8px 10px; border: 2px dashed var(--ink); border-radius: 10px; background: var(--paper); font: 500 14px var(--mono); }
.rules h3 { margin: 56px 0 14px; font-size: 28px; letter-spacing: -0.02em; }
.faq { display: grid; gap: 10px; }
.faq details { border: var(--line); border-radius: 14px; background: #fff; box-shadow: var(--shadow-s); }
.faq summary { cursor: pointer; padding: 14px 18px; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::after { content: "+"; font: 500 20px var(--mono); line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq summary::-webkit-details-marker { display: none; }
.faq p { margin: 0; padding: 0 18px 16px; color: var(--ink-2); }

/* ---------- owners ---------- */
.owners { padding: 90px 0 20px; }
.owners-card { display: grid; grid-template-columns: 1.2fr 1fr; gap: 34px; padding: clamp(22px, 4vw, 40px); background: var(--mint); }
.owners-text > p { margin: 10px 0 0; font-size: 18px; }
.bm { margin-top: 22px; padding: 16px 18px; border: var(--line); border-radius: 14px; background: #fff; }
.bm p { margin: 0; }
.bm-btn { display: inline-block; margin: 12px 0; padding: 9px 16px; border: var(--line); border-radius: 12px; background: var(--sun); font-weight: 800; text-decoration: none; box-shadow: var(--shadow-s); cursor: grab; }
.small { font-size: 14px; color: var(--ink-2); }
.manual { align-self: center; display: grid; gap: 12px; padding: 18px; border: var(--line); border-radius: 14px; background: #fff; }
.manual .small { margin: 0; }
.segs { display: grid; grid-template-columns: repeat(6, 1fr); gap: 7px; }
.segs input { width: 100%; aspect-ratio: 0.85; text-align: center; text-transform: uppercase; font: 500 26px var(--mono); border: var(--line); border-radius: 10px; background: var(--paper); color: var(--ink); }
.segs input:focus { outline: none; background: var(--sun); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.drop-msg { margin: 0; min-height: 1.3em; font-size: 14px; font-weight: 600; }
.drop-msg.ok { color: #108a62; } .drop-msg.bad { color: #d13b18; }

.foot { width: min(1160px, 100% - 32px); margin: 70px auto 34px; text-align: center; font-size: 14px; color: var(--ink-2); }
.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translate(-50%, 40px); opacity: 0; pointer-events: none;
  padding: 10px 18px; border: var(--line); border-radius: 12px; background: var(--ink); color: var(--paper); font-weight: 600;
  box-shadow: 4px 4px 0 var(--tomato); transition: transform 0.25s cubic-bezier(0.2, 1.5, 0.4, 1), opacity 0.2s;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .quotes, .owners-card { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .top nav a { display: none; }
  .hero-text { padding-top: 0; }
  .doodle.star { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

.bm .todo { margin: 10px 0 12px; }
.bm .bm-btn { margin: 0; padding: 2px 8px; font-size: 14px; cursor: pointer; }
#paste { width: 100%; padding: 10px 12px; border: var(--line); border-radius: 10px; background: var(--paper); font: 500 13px var(--mono); color: var(--ink); resize: vertical; }
#paste:focus { outline: none; background: #fff; box-shadow: var(--shadow-s); }

.bm > .bm-btn { margin: 12px 0 8px; font-size: 16px; padding: 10px 18px; cursor: grab; }
.alt { margin-top: 12px; }
.alt summary { cursor: pointer; font-size: 14px; font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.bm .drop-msg { margin-top: 10px; }

/* ---------- seal 印章 ---------- */
.seal {
  --seal: #d7261e;
  position: absolute; right: -16px; top: -20px; width: 84px; height: 84px; z-index: 2;
  color: var(--seal); pointer-events: none; mix-blend-mode: multiply;
  transform: rotate(-14deg); opacity: 0.9;
  animation: seal-in 0.42s cubic-bezier(0.2, 1.6, 0.35, 1) both; animation-delay: calc(var(--i, 0) * 40ms + 0.25s);
}
.seal svg { display: block; width: 100%; height: 100%; overflow: visible; }
.seal .ring { fill: currentColor; font: 800 14px var(--sans); letter-spacing: 0.04em; }
.seal .star { fill: currentColor; font-size: 10px; }
.seal .mid { fill: currentColor; font: 900 34px "Songti SC", "STSong", "SimSun", serif; }
.seal .date { fill: currentColor; font: 500 10px var(--mono); letter-spacing: 0.06em; }
.seal.big { position: absolute; right: -22px; top: auto; bottom: -46px; width: 96px; height: 96px; transform: rotate(12deg); animation-delay: 0.15s; }
@keyframes seal-in {
  0% { opacity: 0; transform: scale(2.1) rotate(-30deg); }
  70% { opacity: 1; transform: scale(0.94) rotate(-12deg); }
  100% { transform: scale(1) rotate(-14deg); }
}
.seal.big { animation-name: seal-in-big; }
@keyframes seal-in-big {
  0% { opacity: 0; transform: scale(2.1) rotate(-10deg); }
  70% { opacity: 1; transform: scale(0.94) rotate(14deg); }
  100% { transform: scale(1) rotate(12deg); }
}
.res-code-wrap { position: relative; }
@media (max-width: 900px) { .rule-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .rule-grid { grid-template-columns: 1fr; } .seal.big { right: -10px; bottom: -40px; width: 80px; height: 80px; } }
.code-card:has(.seal) .cc-top .badge { margin-right: 62px; }