style: 周末契约顶部对齐极速救场 + 首页卡片样式统一

- blindbox/page: 加 justify-center 让标题垂直位置与 panic 页保持一致，移除 flex-1 子容器
- page: 周末契约卡片色值统一用 white/* 透明度，去掉紫色 drop-shadow，简化 hover 光晕

src/app/blindbox/page.tsx

@@ -131,84 +131,94 @@ export default function BlindboxLobbyPage() {
   };
 
   return (
-    <div className="relative flex min-h-dvh flex-col items-center bg-background px-5 py-6 overflow-y-auto scrollbar-none">
+    <div className="relative flex min-h-dvh flex-col items-center justify-center bg-background px-6 py-6 overflow-y-auto scrollbar-none">
       {/* Ambient */}
       <div className="pointer-events-none fixed left-1/3 top-0 h-80 w-80 -translate-y-1/3 rounded-full bg-purple-600/8 blur-3xl" />
       <div className="pointer-events-none fixed right-0 top-1/2 h-60 w-60 rounded-full bg-indigo-500/5 blur-3xl" />
 
+      {/* Back button */}
+      <button
+        onClick={() => router.push("/")}
+        className="absolute left-4 top-3 flex h-8 items-center gap-1 rounded-full bg-surface px-3 text-xs font-medium text-muted ring-1 ring-border transition-colors active:bg-elevated"
+      >
+        <ArrowLeft size={14} />
+        返回
+      </button>
+
       {/* Header */}
-      <div className="flex w-full max-w-sm items-center gap-3">
-        <button
-          onClick={() => router.push("/")}
-          className="flex h-8 w-8 items-center justify-center rounded-full bg-surface ring-1 ring-border transition-colors active:bg-elevated"
-        >
-          <ArrowLeft size={16} className="text-muted" />
-        </button>
-        <div className="flex-1">
-          <h1 className="text-lg font-black text-heading">🎁 周末契约</h1>
-          <p className="text-[10px] font-medium tracking-wider text-purple-400/60">
+      <motion.div
+        className="flex items-center gap-3"
+        initial={{ y: -20, opacity: 0 }}
+        animate={{ y: 0, opacity: 1 }}
+        transition={{ duration: 0.5 }}
+      >
+        <div className="flex h-11 w-11 items-center justify-center rounded-xl bg-linear-to-br from-indigo-900 to-purple-700 shadow-lg shadow-purple-900/30 ring-1 ring-purple-500/20">
+          <Package size={22} className="text-purple-300" />
+        </div>
+        <div>
+          <h1 className="text-2xl font-black tracking-tight text-heading">
+            周末契约
+          </h1>
+          <p className="text-xs font-medium tracking-widest text-muted">
             ADVENTURE ROULETTE
           </p>
         </div>
-      </div>
+      </motion.div>
+
+      <motion.p
+        className="mt-2 max-w-xs text-center text-xs leading-relaxed text-muted"
+        initial={{ opacity: 0 }}
+        animate={{ opacity: 1 }}
+        transition={{ duration: 0.5, delay: 0.05 }}
+      >
+        平日蓄水，周末开奖。把所有"想做但一直没做"的事，交给命运来决定。
+      </motion.p>
+
+      <motion.div
+        className="mt-4 flex items-center justify-center gap-4"
+        initial={{ y: 10, opacity: 0 }}
+        animate={{ y: 0, opacity: 1 }}
+        transition={{ duration: 0.5, delay: 0.1 }}
+      >
+        <div className="flex flex-col items-center gap-1 w-16">
+          <div className="flex h-8 w-8 items-center justify-center rounded-full bg-purple-500/15">
+            <Plus size={14} className="text-purple-400" />
+          </div>
+          <span className="text-[10px] font-semibold text-muted">塞入想法</span>
+        </div>
+
+        <ChevronRight size={12} className="shrink-0 text-dim" />
+
+        <div className="flex flex-col items-center gap-1 w-16">
+          <div className="flex h-8 w-8 items-center justify-center rounded-full bg-indigo-500/15">
+            <Package size={14} className="text-indigo-400" />
+          </div>
+          <span className="text-[10px] font-semibold text-muted">周末开奖</span>
+        </div>
+
+        <ChevronRight size={12} className="shrink-0 text-dim" />
+
+        <div className="flex flex-col items-center gap-1 w-16">
+          <div className="flex h-8 w-8 items-center justify-center rounded-full bg-violet-500/15">
+            <Sparkles size={14} className="text-violet-400" />
+          </div>
+          <span className="text-[10px] font-semibold text-muted">执行契约</span>
+        </div>
+      </motion.div>
 
       <AnimatePresence mode="wait">
         {!loggedIn ? (
-          /* ============ Layer 1: Unauthenticated — Feature intro ============ */
+          /* ============ Layer 1: Unauthenticated — Login CTA ============ */
           <motion.div
             key="intro"
-            className="mt-10 flex flex-1 flex-col items-center"
+            className="mt-10 flex flex-col items-center"
             initial={{ opacity: 0, y: 20 }}
             animate={{ opacity: 1, y: 0 }}
             exit={{ opacity: 0, y: -20 }}
           >
-            {/* Hero icon */}
-            <motion.div
-              className="relative flex h-28 w-28 items-center justify-center"
-              animate={{ y: [0, -6, 0] }}
-              transition={{ duration: 3, repeat: Infinity, ease: "easeInOut" }}
-            >
-              <div className="absolute inset-0 rounded-3xl bg-purple-600/20 blur-xl" />
-              <div className="relative flex h-24 w-24 items-center justify-center rounded-2xl bg-linear-to-br from-indigo-900 to-purple-900 shadow-2xl ring-1 ring-purple-700/30">
-                <Package size={36} className="text-purple-300/70" strokeWidth={1.5} />
-              </div>
-              <motion.span
-                className="absolute -right-1 -top-1 text-lg"
-                animate={{ rotate: [0, 15, -15, 0], scale: [1, 1.2, 1] }}
-                transition={{ duration: 2, repeat: Infinity, repeatDelay: 3 }}
-              >
-                ✨
-              </motion.span>
-            </motion.div>
-
-            <h2 className="mt-6 text-xl font-black text-heading">
-              和 TA 一起，拆开周末
-            </h2>
-            <p className="mt-2 max-w-72 text-center text-sm leading-relaxed text-tertiary">
-              平日蓄水，周末开奖。把所有"想做但一直没做"的事，
-              交给命运来决定。
-            </p>
-
-            {/* Steps */}
-            <div className="mt-8 flex w-full max-w-xs flex-col gap-4">
-              {[
-                { step: "1", icon: Plus, text: "创建专属房间，邀请 TA 加入" },
-                { step: "2", icon: Package, text: "平时随时塞入疯狂想法" },
-                { step: "3", icon: Sparkles, text: "周末一起盲抽，绝不反悔" },
-              ].map((s) => (
-                <div key={s.step} className="flex items-center gap-3">
-                  <div className="flex h-9 w-9 shrink-0 items-center justify-center rounded-xl bg-purple-600/15 text-sm font-black text-purple-400 ring-1 ring-purple-500/20">
-                    {s.step}
-                  </div>
-                  <p className="text-sm font-medium text-secondary">{s.text}</p>
-                </div>
-              ))}
-            </div>
-
-            {/* CTA */}
             <motion.button
               onClick={() => setShowAuth(true)}
-              className="mt-10 flex h-12 w-full max-w-xs items-center justify-center gap-2 rounded-2xl bg-linear-to-r from-purple-600 to-indigo-600 text-sm font-bold text-white shadow-lg shadow-purple-900/40 transition-shadow hover:shadow-xl hover:shadow-purple-900/50"
+              className="flex h-12 w-full max-w-xs items-center justify-center gap-2 rounded-2xl bg-linear-to-r from-purple-600 to-indigo-600 text-sm font-bold text-white shadow-lg shadow-purple-900/40 transition-shadow hover:shadow-xl hover:shadow-purple-900/50"
               whileHover={{ scale: 1.02 }}
               whileTap={{ scale: 0.97 }}
             >
@@ -242,7 +252,7 @@ export default function BlindboxLobbyPage() {
           /* ============ Layer 2: Logged in, no rooms — Create first ============ */
           <motion.div
             key="empty"
-            className="mt-10 flex flex-1 flex-col items-center"
+            className="mt-10 flex flex-col items-center"
             initial={{ opacity: 0, y: 20 }}
             animate={{ opacity: 1, y: 0 }}
             exit={{ opacity: 0, y: -20 }}
@@ -338,7 +348,7 @@ export default function BlindboxLobbyPage() {
           /* ============ Layer 3: Logged in, has rooms — Room list ============ */
           <motion.div
             key="rooms"
-            className="mt-6 flex w-full max-w-sm flex-1 flex-col"
+            className="mt-6 flex w-full max-w-sm flex-col"
             initial={{ opacity: 0, y: 20 }}
             animate={{ opacity: 1, y: 0 }}
             exit={{ opacity: 0, y: -20 }}

src/app/page.tsx

@@ -97,44 +97,50 @@ export default function LandingPage() {
         {/* Card B: Adventure Roulette */}
         <motion.button
           onClick={() => router.push("/blindbox")}
-          className="group relative w-full overflow-hidden rounded-2xl bg-linear-to-br from-indigo-900 to-purple-800 p-5 pb-4 text-left shadow-xl shadow-purple-600/20 ring-1 ring-purple-400/15 transition-shadow hover:shadow-2xl hover:shadow-purple-500/30"
+          className="group relative w-full overflow-hidden rounded-2xl bg-linear-to-br from-indigo-900 to-purple-800 p-5 pb-4 text-left shadow-xl shadow-purple-600/20 ring-1 ring-white/15 transition-shadow hover:shadow-2xl hover:shadow-purple-500/30"
           initial={{ x: 40, opacity: 0 }}
           animate={{ x: 0, opacity: 1 }}
           transition={{ duration: 0.5, delay: 0.4 }}
           whileHover={{ scale: 1.02, rotate: 0.5 }}
           whileTap={{ scale: 0.97 }}
         >
-          <div className="absolute -right-6 -top-6 h-32 w-32 rounded-full bg-purple-500/20 blur-2xl transition-all group-hover:bg-purple-400/30 group-hover:blur-3xl" />
-          <div className="absolute -bottom-4 -left-4 h-24 w-24 rounded-full bg-indigo-400/15 blur-xl transition-all group-hover:bg-indigo-300/25" />
+          <div className="absolute -right-6 -top-6 h-32 w-32 rounded-full bg-purple-400/15 blur-2xl" />
+          <div className="absolute -bottom-4 -left-4 h-24 w-24 rounded-full bg-indigo-300/15 blur-xl" />
 
           <div className="relative z-10">
             <div className="flex items-center gap-2.5">
-              <div className="flex h-10 w-10 items-center justify-center rounded-xl bg-white/10 ring-1 ring-purple-300/15">
-                <Gift size={22} className="text-purple-200" />
+              <div className="flex h-10 w-10 items-center justify-center rounded-xl bg-black/15 ring-1 ring-white/10">
+                <Gift size={22} className="text-white" />
               </div>
               <div className="flex-1">
-                <h2 className="text-lg font-black text-white drop-shadow-[0_0_12px_rgba(192,132,252,0.5)]">
-                  🎁 周末契约
-                </h2>
-                <p className="text-[10px] font-semibold tracking-wider text-purple-300/60">
+                <h2 className="text-lg font-black text-white">🎁 周末契约</h2>
+                <p className="text-[10px] font-semibold tracking-wider text-white/60">
                   ADVENTURE ROULETTE
                 </p>
               </div>
             </div>
-            <p className="mt-3.5 text-sm font-medium leading-relaxed text-purple-100/90">
+            <p className="mt-3.5 text-sm font-medium leading-relaxed text-white/90">
               丢入疯狂想法，周末盲盒开奖，绝不反悔
             </p>
             <div className="mt-3 flex items-center justify-between">
-              <div className="flex items-center gap-1.5 text-xs font-bold text-purple-300/50">
+              <div className="flex items-center gap-1.5 text-xs font-bold text-white/50">
                 <Gift size={12} />
                 <span>盲盒蓄水 · 仪式开奖</span>
               </div>
-              <div className="flex items-center gap-0.5 text-xs font-semibold text-purple-200/40 transition-colors group-hover:text-purple-200/70">
+              <div className="flex items-center gap-0.5 text-xs font-semibold text-white/40 transition-colors group-hover:text-white/70">
                 进入
                 <ChevronRight size={14} />
               </div>
             </div>
           </div>
+
+          <motion.div
+            className="absolute inset-0 rounded-2xl"
+            whileHover={{
+              x: [0, -2, 2, -2, 2, 0],
+              transition: { duration: 0.4, repeat: Infinity },
+            }}
+          />
         </motion.button>
       </div>