:root{--bg-0: #fff9de;--bg-1: #fff1be;--bg-2: #dff2ff;--ink: #2c2418;--muted: #6f634d;--line: rgba(84, 67, 30, .18);--card: rgba(255, 249, 224, .76);--card-strong: rgba(255, 243, 194, .87);--accent-yellow: #ffc93b;--accent-soft: #ffe57b;--accent-blue: #88cdf5;--radius: 24px;--pattern-x: 0px;--pattern-y: 0px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Sora,Noto Sans TC,sans-serif;color:var(--ink);background:radial-gradient(circle at 12% 14%,rgba(255,204,62,.34),transparent 31%),radial-gradient(circle at 84% 20%,rgba(136,205,245,.3),transparent 36%),radial-gradient(circle at 50% 85%,rgba(255,234,132,.34),transparent 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rgba(84,67,30,.14)}.btn:hover{transform:translateY(-2px)}.story{position:relative;z-index:4;height:520vh}.story-sticky{position:sticky;top:0;height:100vh;overflow:hidden}#three-canvas,#particle-canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}#three-canvas{z-index:2}#particle-canvas{z-index:3;pointer-events:none;opacity:.75}.story-overlay{position:absolute;left:50%;transform:translate(-50%);bottom:9vh;width:min(780px,calc(100% - 30px));z-index:8;border-radius:var(--radius);border:1px solid var(--line);background:var(--card);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);padding:20px;box-shadow:0 16px 34px #68521c33}.chapter{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}.story-overlay h2{font-size:clamp(32px,5vw,52px);line-height:1.08;letter-spacing:-.02em;margin-bottom:8px}.story-overlay p{font-size:clamp(15px,2.2vw,20px);color:var(--muted);margin-bottom:16px}.story-overlay.compact 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scale(.99);box-shadow:0 6px 12px #ad750947,inset 0 1px #ffffffa6}.subscribe-btn--vip{color:#2a1200!important;border-color:#843c0073!important;background:linear-gradient(140deg,#ffe39c,#ffb83d 42%,#ff7d1e)!important;box-shadow:0 12px 22px #b65f0557,inset 0 1px #ffffffb8,inset 0 -2px 6px #96420038}.subscribe-btn--vip:hover{box-shadow:0 16px 26px #b65f056b,inset 0 1px #ffffffc2,inset 0 -2px 6px #9642003d}.subscribe-btn.is-disabled,.subscribe-btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important;filter:grayscale(.1);box-shadow:0 4px 8px #785c1d2e,inset 0 1px #ffffffa6!important}.footer{position:relative;z-index:5;text-align:center;color:#85795f;font-size:12px;padding:38px 20px 58px}.checkout-transition{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:grid;place-items:center;padding:20px;background:#fff8e1b8;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .22s ease,visibility .22s ease}.checkout-transition.active{opacity:1;visibility:visible;pointer-events:auto}.checkout-transition__card{width:min(440px,100%);border-radius:18px;border:1px solid rgba(115,84,22,.24);background:linear-gradient(170deg,#fff7d6f5,#ffecabe6);box-shadow:0 20px 44px #6e4e0e38;padding:24px 22px;text-align:center}.checkout-transition__spinner{width:34px;height:34px;border-radius:50%;margin:0 auto 14px;border:3px solid rgba(168,117,13,.22);border-top-color:#c07a00;animation:checkoutSpin .9s linear infinite}.checkout-transition__card h5{font-size:18px;line-height:1.2;margin-bottom:8px;color:#2f230b}.checkout-transition__card p{font-size:13px;color:#695a3a}@media (max-width: 840px){.top-nav{top:10px;right:16px}.brand-name{font-size:12px}.nav-cta{font-size:11px;padding:7px 11px}.story-overlay{bottom:6vh;padding:16px}.plan-grid{grid-template-columns:1fr}}@media (max-width: 640px){.hero{padding:80px 20px 50px}.hero h1{font-size:clamp(34px,10vw,52px)}.story-overlay{bottom:2vh;width:calc(100% - 24px)}.story-overlay p{font-size:14px}.plans{padding:60px 16px 80px}.plans-header h3{font-size:clamp(26px,8vw,38px)}.plans-header p{font-size:15px}.card-mode-control{display:flex;width:100%;margin-top:12px}.card-mode-control select{min-width:0;width:100%}.plan-grid{padding:0 4px}.plan{width:100%}}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}.btn,.plan,.progress-fill{transition:none}.subscribe-btn,.nav-cta,.smile-pattern{animation:none}}@keyframes patternDrift{0%{background-position:0 0}to{background-position:-140px -110px}}@keyframes checkoutSpin{to{transform:rotate(360deg)}}