/* ============================================================
   介绍页（site/）· 方案 A「楼面招牌」
   颜色 / 字体沿用游戏 css/tokens.css 的名字和值（这里只抄用得到的几个，不引游戏的 css，
   免得游戏改样式时首页跟着变）。深色、黄铜点缀、写实截图，不用手游式大圆角 / 渐变按钮。
   ============================================================ */
:root{
  --ink-950:#080604; --ink-900:#110c09; --ink-800:#1a1310; --ink-700:#241b16;
  --wood-900:#26170d; --wood-700:#42281a;
  --brass-100:#f7e9c4; --brass-300:#e7c97f; --brass-500:#c9a052; --brass-700:#8e6a2b; --brass-900:#4d3812;
  --hairline:rgba(201,160,82,.26); --hairline-strong:rgba(201,160,82,.55);
  --tx-1:#e8dec6; --tx-2:#c8bb9e; --tx-3:#9a8f78;
  --lamp-glow:rgba(255,200,130,.16);
  --shadow-2:0 8px 24px rgba(0,0,0,.55); --shadow-3:0 24px 60px rgba(0,0,0,.7);
  --hi-brass:0 1px 0 rgba(255,220,160,.12) inset;
  --serif:Georgia,"Times New Roman","Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC",serif;
  --serif-zh:"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC","SimSun",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Segoe UI","Noto Sans CJK SC",sans-serif;
  --r-1:4px; --r-2:8px;
  --gut:clamp(16px,4vw,40px);
  --max:1180px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--ink-950);color:var(--tx-1);font:15px/1.7 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit}
:focus-visible{outline:2px solid var(--brass-300);outline-offset:3px}

/* ---------- 顶栏 ---------- */
.bar{position:absolute;inset:0 0 auto;z-index:5;display:flex;align-items:center;justify-content:space-between;
  padding:calc(14px + env(safe-area-inset-top)) var(--gut) 14px}
.mark{display:flex;align-items:center;gap:10px;text-decoration:none;font:15px/1 var(--serif);letter-spacing:.32em;color:var(--brass-300)}
/* 左上小标：标题「再抽一张」那两张牌（img/mark.svg） */
.logo-mark{width:30px;height:26px;flex:none;filter:drop-shadow(0 1px 1px rgba(0,0,0,.6))}
.bar nav{display:flex;gap:26px}
.bar nav a{font-size:13px;letter-spacing:.08em;color:var(--tx-2);text-decoration:none}
.bar nav a:hover{color:var(--brass-300)}

/* ---------- 首屏 ---------- */
.hero{position:relative;min-height:min(92vh,920px);display:grid;place-items:center;text-align:center;
  padding:110px var(--gut) 80px;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-2}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:50% 40%;opacity:.42;filter:saturate(.85) contrast(1.05);transform:scale(1.06)}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(ellipse 60% 55% at 50% 45%,rgba(8,6,4,.35),rgba(8,6,4,.88) 70%,var(--ink-950)),
             linear-gradient(to bottom,rgba(8,6,4,.7),transparent 30%,transparent 70%,var(--ink-950))}
.hero-in{max-width:760px}
.hero-cards{display:block;width:clamp(112px,11vw,150px);height:auto;margin:0 auto 4px}
.hero h1{margin:0;font-weight:400}
.hero .en{display:block;font:italic 400 clamp(20px,2.6vw,28px)/1.2 var(--serif);letter-spacing:.06em;color:var(--brass-300)}
.hero .zh{display:block;margin-top:.18em;font:400 clamp(64px,11vw,128px)/1.05 var(--serif-zh);letter-spacing:.12em;
  color:var(--brass-100);text-shadow:0 2px 0 rgba(0,0,0,.6),0 0 60px var(--lamp-glow);padding-left:.12em}
.tag{display:flex;align-items:center;justify-content:center;gap:16px;margin:22px 0 0;
  font:400 clamp(17px,2vw,20px)/1 var(--serif-zh);letter-spacing:.5em;color:var(--tx-1);padding-left:.5em}
.tag::before,.tag::after{content:"";width:48px;height:1px;background:linear-gradient(90deg,transparent,var(--brass-500))}
.tag::after{transform:scaleX(-1)}
.cta{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:44px}
.fine{margin:22px 0 0;font-size:12px;letter-spacing:.14em;color:var(--tx-3)}

/* ---------- 按钮（跟游戏里的主按钮 / 描边按钮同一套：黄铜实心 + 黄铜细线） ---------- */
.btn{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-width:228px;
  padding:15px 26px 13px;border-radius:var(--r-1);text-decoration:none;font:600 17px/1.2 var(--sans);letter-spacing:.08em;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease}
.btn small{font:500 10.5px/1 var(--sans);letter-spacing:.2em;opacity:.72}
.btn.gold{color:#1b1206;background:linear-gradient(180deg,#f0d690,var(--brass-500) 55%,#b08a40);
  box-shadow:var(--hi-brass),0 0 0 1px #6d521f,var(--shadow-2)}
.btn.gold:hover{transform:translateY(-1px);box-shadow:var(--hi-brass),0 0 0 1px #6d521f,0 12px 30px rgba(0,0,0,.6),0 0 40px rgba(231,201,127,.18)}
.btn.line{color:var(--brass-300);background:rgba(17,12,9,.72);box-shadow:inset 0 0 0 1px var(--hairline-strong);backdrop-filter:blur(4px)}
.btn.line:hover{background:rgba(36,27,22,.85);box-shadow:inset 0 0 0 1px var(--brass-500)}

/* ---------- 小节标题 ---------- */
section{padding:0 var(--gut)}
.wrap{max-width:var(--max);margin:0 auto}
.sec{display:flex;align-items:baseline;gap:14px;margin:0 0 28px;font-weight:400}
.sec span{font:400 26px/1.2 var(--serif-zh);letter-spacing:.1em;color:var(--brass-100)}
.sec em{font:normal 11px/1 var(--sans);letter-spacing:.28em;color:var(--brass-500)}
.sec::after{content:"";flex:1;height:1px;align-self:center;background:linear-gradient(90deg,var(--hairline),transparent)}

/* ---------- 截图 ---------- */
.shots{padding-top:40px;padding-bottom:96px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.grid figure{margin:0;position:relative;border-radius:var(--r-1);overflow:hidden;background:var(--ink-900);
  box-shadow:0 0 0 1px var(--hairline),var(--shadow-2)}
.grid figure.big{grid-column:span 2;grid-row:span 2}
.grid a{display:block;aspect-ratio:16/9}
.grid img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease,filter .3s ease;filter:brightness(.92)}
.grid a:hover img{transform:scale(1.025);filter:brightness(1)}
.grid figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 10px;font-size:13px;letter-spacing:.1em;color:var(--tx-1);
  background:linear-gradient(to top,rgba(8,6,4,.9),transparent);pointer-events:none}
.grid figcaption i{font-style:normal;margin-left:8px;font-size:10px;letter-spacing:.22em;color:var(--brass-500)}

/* ---------- iPhone 三步 ---------- */
.iphone{padding-bottom:96px}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s}
.steps li{position:relative;padding:28px 20px 24px;border-radius:var(--r-2);text-align:center;
  background:linear-gradient(180deg,var(--ink-800),var(--ink-900));box-shadow:0 0 0 1px var(--hairline),var(--hi-brass)}
.steps svg.ph{display:block;width:132px;height:auto;margin:0 auto 18px;filter:drop-shadow(0 14px 22px rgba(0,0,0,.6))}
.steps b{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;margin-bottom:10px;
  font:400 14px/1 var(--serif);color:var(--brass-300);box-shadow:inset 0 0 0 1px var(--hairline-strong)}
.steps p{margin:0;color:var(--tx-2);font-size:14px;line-height:1.6}
.steps p q{quotes:"「" "」";color:var(--tx-1)}
.ico{display:inline-block;width:1.05em;height:1.05em;vertical-align:-.16em;margin:0 .15em;color:var(--brass-300)}

/* ---------- Windows ---------- */
.win{padding-bottom:110px}
.win-card{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:30px 34px;border-radius:var(--r-2);
  background:linear-gradient(100deg,rgba(66,40,26,.55),rgba(17,12,9,.9) 60%);box-shadow:0 0 0 1px var(--hairline),var(--hi-brass)}
.win-card .sec{margin-bottom:14px}
.win-card .sec::after{display:none}
.mini{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:6px 22px;color:var(--tx-2);font-size:14px;counter-reset:m}
.mini li{counter-increment:m}
.mini li::before{content:counter(m);display:inline-grid;place-items:center;width:18px;height:18px;margin-right:8px;border-radius:50%;
  font:11px/1 var(--serif);color:var(--brass-300);box-shadow:inset 0 0 0 1px var(--hairline)}
.mini q{quotes:"「" "」";color:var(--tx-1)}
.mini code{font:inherit;color:var(--tx-1)}

/* ---------- 页脚 ---------- */
footer{border-top:1px solid var(--hairline);padding:34px var(--gut) calc(40px + env(safe-area-inset-bottom));background:var(--ink-950)}
footer p{margin:0}
footer .wrap{display:grid;gap:6px;font-size:12.5px;color:var(--tx-3);letter-spacing:.03em}
footer .age{display:inline-grid;place-items:center;min-width:34px;height:22px;padding:0 6px;margin-right:4px;border-radius:3px;
  font:600 11px/1 var(--sans);color:var(--brass-300);box-shadow:inset 0 0 0 1px var(--hairline-strong)}
footer .help{color:var(--tx-2)}
footer a{color:var(--tx-2);text-decoration-color:var(--hairline-strong);text-underline-offset:3px}
footer .sig{margin-top:14px;font:12px/1 var(--serif);letter-spacing:.3em;color:var(--brass-700)}

/* ---------- 手机 ---------- */
@media (max-width:760px){
  .bar nav{display:none}
  .hero{min-height:auto;padding-top:120px;padding-bottom:64px}
  .hero .zh{letter-spacing:.08em;padding-left:.08em}
  .tag{letter-spacing:.36em;padding-left:.36em}
  .cta{flex-direction:column;align-items:stretch;gap:12px;margin-top:36px}
  .btn{min-width:0;width:100%}
  .sec{margin-bottom:20px;flex-wrap:wrap;gap:4px 12px}
  .sec::after{display:none}
  .sec span{white-space:nowrap}
  .sec span{font-size:22px}
  .shots{padding-top:12px;padding-bottom:64px}
  /* 手机上截图横着滑 */
  .grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:10px;margin:0 calc(-1 * var(--gut));padding:0 var(--gut) 6px;
    scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .grid::-webkit-scrollbar{display:none}
  .grid figure,.grid figure.big{flex:0 0 86%;scroll-snap-align:center}
  .iphone{padding-bottom:64px}
  .steps{grid-template-columns:1fr;gap:12px}
  .steps li{display:grid;grid-template-columns:60px 1fr;grid-template-rows:auto auto;align-content:center;align-items:center;gap:6px 16px;text-align:left;padding:14px 16px}
  .steps svg.ph{grid-row:span 2;width:60px;margin:0;filter:drop-shadow(0 6px 10px rgba(0,0,0,.6))}
  .steps b{margin:0;align-self:end}
  .steps p{align-self:start}
  .win{padding-bottom:72px}
  .win-card{flex-direction:column;align-items:stretch;padding:24px 20px;gap:22px}
  .mini{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}