:root{--c-primary: #c5614f;--c-primary-lt: #e8896e;--c-primary-dark: #a3442f;--c-cream: #fdf5e6;--c-cream-dk: #f5e6d0;--c-white: #ffffff;--c-text: #3d2b1f;--c-text-muted: #7a6052;--c-rti-red: #cc0000;--c-gold: #d4a853;--c-silver: #9ba3a8;--c-bronze: #c47a3a;--c-tencent: #12b7f5;--c-tencent-dk: #0ea0d8;--c-google: #ea4335;--c-google-dk: #d03427;--font: "Chiron GoRound TC", "Microsoft JhengHei", "PingFang TC", sans-serif;--sec-v: 96px;--gap-grid: 24px;--container: 1440px;--nav-h: 68px;--r-sm: 8px;--r-md: 16px;--r-lg: 24px;--r-xl: 32px;--sh-sm: 0 2px 10px rgba(0, 0, 0, .07);--sh-md: 0 4px 20px rgba(0, 0, 0, .11);--sh-lg: 0 8px 40px rgba(0, 0, 0, .15);--tr: .4s cubic-bezier(.25, .46, .45, .94);--tr-fast: .25s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:var(--nav-h)}body{font-family:var(--font);background:var(--c-white);color:var(--c-text);line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden}.hero:before,.section:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;opacity:.22;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-size:300px 300px}#gifts:before,#prizes:before{opacity:.08}.hero>*,.section>*{position:relative;z-index:1}::selection{background:var(--c-primary);color:#fff}img{max-width:100%;display:block;height:auto}a{text-decoration:none;color:inherit}ul{list-style:none}button{cursor:pointer;border:none;background:none;font-family:inherit}.container{max-width:var(--container);margin:0 auto;padding:0 28px}.section{padding:var(--sec-v) 0}.section--white{background:var(--c-white)}.section--cream{background:var(--c-cream)}.sec-head{text-align:center;margin-bottom:52px}.sec-title{font-size:clamp(1.75rem,3.5vw,2.6rem);font-weight:700;color:var(--c-primary);letter-spacing:.08em;margin-bottom:14px}.sec-divider{width:56px;height:3px;background:linear-gradient(90deg,var(--c-primary),var(--c-primary-lt));border-radius:2px;margin:0 auto 14px}.sec-subtitle{font-size:1rem;color:var(--c-text-muted);max-width:560px;margin:0 auto;line-height:1.7}.reveal{opacity:0;transform:translateY(28px);transition:opacity .65s ease,transform .65s ease}.reveal.revealed{opacity:1;transform:translateY(0)}.navbar{position:fixed;top:0;left:0;right:0;z-index:900;height:var(--nav-h);display:flex;align-items:center;transition:background var(--tr),box-shadow var(--tr);background:transparent}.navbar--scrolled{background:#fdf5e6f5;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 2px 16px #00000014}.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1rem}.nav-logo-rti{background:var(--c-rti-red);color:#fff;font-size:.85rem;font-weight:800;padding:2px 8px;border-radius:4px;letter-spacing:.05em}.nav-logo-text{color:var(--c-text);letter-spacing:.05em}.navbar--scrolled .nav-logo-text{color:var(--c-primary)}.nav-links{display:flex;align-items:center;gap:32px}.nav-links a{font-size:.9rem;font-weight:600;color:var(--c-text);letter-spacing:.06em;position:relative;transition:color var(--tr-fast)}.nav-links a:after{content:"";position:absolute;bottom:-3px;left:0;width:0;height:2px;background:var(--c-primary);transition:width var(--tr-fast);border-radius:2px}.nav-links a:hover{color:var(--c-primary)}.nav-links a:hover:after{width:100%}.nav-toggle{display:none;flex-direction:column;gap:5px;padding:6px;z-index:10}.nav-toggle span{display:block;width:24px;height:2px;background:var(--c-text);border-radius:2px;transition:transform var(--tr-fast),opacity var(--tr-fast)}.hero{position:relative;width:100%;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}.hero-rti-logo{position:absolute;top:0;left:2rem;width:100px;z-index:3;pointer-events:none}.hero-bg{position:absolute;top:0;right:0;bottom:0;left:0;animation:heroReveal 1.8s ease-out forwards;overflow:hidden}.hero-bg-img{width:100%;height:100%;object-fit:cover;pointer-events:none;-webkit-user-select:none;user-select:none;object-position:center center;display:block}@keyframes heroReveal{0%{filter:blur(16px);transform:scale(1.06)}to{filter:blur(0px);transform:scale(1)}}.hero-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at center,#ffffff26,#fff0 70%);pointer-events:none}@keyframes heroZoom{0%{transform:scale(1)}to{transform:scale(1.06)}}.hero-content{position:relative;z-index:2;text-align:center;opacity:0;transform:translateY(36px);transition:opacity .9s ease .25s,transform .9s ease .25s}.hero-content--visible{opacity:1;transform:translateY(0)}.hero-logo{width:85vw;margin:0 auto;filter:drop-shadow(0 8px 28px rgba(231,214,214,.18))}.hero-logo--float{animation:logoFloat 5s ease-in-out infinite}@keyframes logoFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}.intro-body{max-width:780px;margin:0 auto;text-align:justify}.intro-body p{font-size:1.05rem;color:var(--c-text-muted);line-height:2;margin-bottom:1.4em}.intro-body p:last-child{margin-bottom:0}#gifts{background-size:cover;background-position:center;background-attachment:fixed}.gifts-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--gap-grid)}.gift-card{position:relative;background:var(--c-white);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-sm);transition:transform var(--tr),box-shadow var(--tr);cursor:default}.heart-cursor{position:fixed;pointer-events:none;transform:translate(-50%,-50%);font-size:1.2rem;color:#fff;filter:drop-shadow(0 1px 3px rgba(0,0,0,.3));z-index:9999;transition:color .15s ease}.heart-cursor--active{color:var(--c-primary)}.heart-pop{position:absolute;pointer-events:none;font-size:1rem;color:var(--c-primary);z-index:10;animation:heartFloat .8s ease-out forwards}@keyframes heartFloat{0%{opacity:1;transform:translate(-50%,-50%) scale(.5)}50%{opacity:1;transform:translate(-50%,-120%) scale(1.2)}to{opacity:0;transform:translate(-50%,-200%) scale(.8)}}.gift-num{position:absolute;top:10px;left:10px;z-index:2;background:transparent;color:#fff;font-size:.8rem;font-weight:700;width:36px;height:36px;border-radius:50%;border:2px solid #fff;display:flex;align-items:center;justify-content:center;letter-spacing:.02em}.gift-img-wrap{aspect-ratio:1 / 1;overflow:hidden;background:var(--c-cream)}.gift-img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}.gift-caption{padding:10px 14px 14px;text-align:center;border-top:1px solid rgba(0,0,0,.04);display:flex;flex-direction:column;gap:2px}.gift-name{font-size:1rem;font-weight:600;color:var(--c-text);letter-spacing:.04em}.gift-origin{font-size:.9rem;color:var(--c-primary);font-weight:500;letter-spacing:.06em}.act-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;max-width:880px;margin:0 auto}.act-card{background:var(--c-white);border-radius:var(--r-xl);padding:40px 36px;box-shadow:var(--sh-md);display:flex;flex-direction:column;align-items:center;text-align:center;transition:transform var(--tr),box-shadow var(--tr)}.act-card-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}.act-icon{font-size:2rem;line-height:1;color:var(--c-primary);width:2.4rem;text-align:center}.act-badge{background:var(--c-cream-dk);color:var(--c-primary-dark);font-size:.72rem;font-weight:800;letter-spacing:.15em;padding:3px 12px;border-radius:20px;border:1px solid rgba(197,97,79,.2)}.act-title{font-size:1.45rem;font-weight:700;color:var(--c-primary);margin-bottom:14px;letter-spacing:.06em}.act-desc{font-size:1rem;color:var(--c-text-muted);line-height:1.9;margin-bottom:20px;text-align:left;display:inline-block}.act-period{display:flex;flex-direction:column;gap:4px;width:100%;margin-bottom:28px;padding:14px 18px;background:var(--c-cream);border-radius:var(--r-sm);border:2px dashed var(--c-primary-lt)}.act-period-label{font-size:.75rem;font-weight:700;letter-spacing:.12em;color:var(--c-primary);text-transform:uppercase}.act-period-date{font-size:1rem;font-weight:600;color:var(--c-text)}.act-btns{display:flex;flex-direction:column;gap:12px;width:100%}.btn{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 16px 13px 24px;border-radius:999px;font-family:var(--font);font-size:1rem;font-weight:600;letter-spacing:.06em;transition:background var(--tr-fast),color var(--tr-fast),border-color var(--tr-fast);cursor:pointer;border:2px solid currentColor;width:100%;background:transparent}.btn-left{display:flex;align-items:center;gap:10px}.btn-arrow{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:.85rem;transition:transform var(--tr-fast)}.btn:hover .btn-arrow{transform:translate(4px)}.btn-icon{width:18px;height:18px;flex-shrink:0;fill:currentColor}.btn--tencent{background:var(--c-tencent);color:#fff;border-color:var(--c-tencent)}.btn--tencent:hover{background:transparent;color:var(--c-tencent)}.btn--google{background:var(--c-google);color:#fff;border-color:var(--c-google)}.btn--google:hover{background:transparent;color:var(--c-google);box-shadow:0 5px 16px #ea433561}.prizes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:960px;margin:0 auto;align-items:start}.prize-card{background:var(--c-white);border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-md);text-align:center;transition:transform var(--tr),box-shadow var(--tr)}.prize-card--r1{border-top:5px solid var(--c-gold)}.prize-card--r2{border-top:5px solid var(--c-silver)}.prize-card--r3{border-top:5px solid var(--c-bronze)}.prize-medal{font-size:2.2rem;padding:20px 0 4px;line-height:1}.prize-card--r1 .prize-medal{color:var(--c-gold)}.prize-card--r2 .prize-medal{color:var(--c-silver)}.prize-card--r3 .prize-medal{color:var(--c-bronze)}.prize-rank-label{font-size:.8rem;font-weight:700;letter-spacing:.12em;margin-bottom:12px}.prize-card--r1 .prize-rank-label{color:var(--c-gold)}.prize-card--r2 .prize-rank-label{color:var(--c-silver)}.prize-card--r3 .prize-rank-label{color:var(--c-bronze)}.prize-img-wrap{position:relative;width:200px;height:200px;border-radius:50%;overflow:hidden;background:var(--c-cream);margin:0 auto 4px;border:4px solid var(--c-cream-dk)}.prize-img{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;object-position:center;opacity:0;transition:opacity .8s ease,transform .6s ease}.prize-img--active{opacity:1}.prize-card:hover .prize-img--active{transform:scale(1.06)}.prize-body{padding:20px 22px 28px}.prize-name{font-size:1.1rem;font-weight:700;color:var(--c-text);margin-bottom:8px;letter-spacing:.04em}.prize-desc{font-size:.88rem;color:var(--c-text-muted);line-height:1.75;margin-bottom:10px}.prize-qty{font-size:.88rem;font-weight:700;color:var(--c-primary);letter-spacing:.05em}.rules-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:0;background:var(--c-white);border-radius:var(--r-xl);box-shadow:var(--sh-sm);overflow:hidden}.rule-item{display:flex;align-items:flex-start;gap:16px;padding:18px 22px;position:relative}.rule-item:not(:last-child):after{content:"";position:absolute;bottom:0;left:22px;right:22px;height:3px;background-image:radial-gradient(circle,#d9c9b8 1.2px,transparent 1.2px);background-size:8px 3px;background-repeat:repeat-x;background-position:center}.rule-num{flex-shrink:0;width:30px;height:30px;background:var(--c-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:800;margin-top:2px}.rule-text{font-size:.96rem;color:var(--c-text);line-height:1.8}.rules-contact{max-width:820px;margin:20px auto 0;font-size:.96rem;color:var(--c-text-muted);line-height:1.8}.rules-contact a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}.copy-email{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;cursor:pointer;-webkit-user-select:none;user-select:none;transition:transform .1s ease,color .1s ease;display:inline-block}.copy-email:active{transform:scale(.92);color:var(--c-primary-dark)}.copy-tip{font-size:.8rem;color:var(--c-primary);font-weight:700;margin-left:6px}.copy-fade-enter-active{transition:opacity .2s ease,transform .2s ease}.copy-fade-leave-active{transition:opacity .4s ease,transform .4s ease}.copy-fade-enter-from{opacity:0;transform:translateY(-4px)}.copy-fade-leave-to{opacity:0;transform:translateY(-6px)}.footer{background:var(--c-text);color:#fffc;padding:48px 0}.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:28px}.footer-logo-link{flex-shrink:0}.footer-logo-img{height:52px;width:auto;display:block}.footer-info{font-size:.85rem;line-height:1.9;color:#ffffffbf}.footer-org{font-size:1rem;font-weight:700;color:#fff;margin-bottom:2px}.footer-browser{border-top:1px solid rgba(255,255,255,.1);margin-top:28px;padding:16px 18px 0;text-align:center;font-size:.78rem;color:#ffffff73;line-height:1.7}.back-top{position:fixed;bottom:32px;right:32px;z-index:800;width:46px;height:46px;border-radius:50%;background:var(--c-primary);color:#fff;font-size:.85rem;display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-md);opacity:0;transform:translateY(16px);transition:opacity var(--tr),transform var(--tr),background var(--tr-fast);pointer-events:none}.back-top--visible{opacity:1;transform:translateY(0);pointer-events:auto}.back-top:hover{background:var(--c-primary-dark)}@media (max-width: 1024px){:root{--sec-v: 80px}.gifts-grid{grid-template-columns:repeat(4,1fr)}.hero-bg-img{object-position:center center}.prize-img-wrap{width:160px;height:160px}}@media (max-width: 1024px) and (orientation: landscape){.hero-bg-img{object-position:center center}}@media (max-width: 1024px) and (orientation: portrait){.hero-bg-img{object-position:left center}}@media (max-width: 768px){:root{--sec-v: 64px;--gap-grid: 16px;--nav-h: 60px}.nav-links{position:fixed;top:0;right:0;bottom:0;left:25%;background:var(--c-cream);flex-direction:column;justify-content:center;align-items:center;gap:28px;transform:translate(100%);transition:transform var(--tr);box-shadow:-8px 0 32px #0000001f;padding:40px 20px}.nav-links--open{transform:translate(0)}.nav-links a{font-size:1.05rem}.nav-toggle{display:flex}.gifts-grid{grid-template-columns:repeat(3,1fr);gap:14px}.act-grid{grid-template-columns:1fr}.act-card{padding:32px 24px}.prizes-grid{grid-template-columns:1fr;max-width:400px}.footer-inner{flex-direction:column;align-items:center;text-align:center}.footer-info{text-align:center}.back-top{bottom:20px;right:20px;width:40px;height:40px}.intro-body{text-align:left}}@media (max-width: 480px){.gifts-grid{grid-template-columns:repeat(2,1fr)}.sec-title{font-size:1.6rem}.container{padding:0 18px}.act-card{padding:24px 18px}.prizes-grid{max-width:100%}}@media print{.navbar,.back-top{display:none}.hero{min-height:auto;page-break-after:always}.reveal{opacity:1!important;transform:none!important}}