@font-face{font-family:TT Drugs;src:url(/fonts/TTDrugs-Regular.otf) format("opentype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:TT Drugs;src:url(/fonts/TTDrugs-Bold.otf) format("opentype");font-weight:700;font-style:normal;font-display:swap}@font-face{font-family:Prompt;src:url(/fonts/Prompt-Light.ttf) format("truetype");font-weight:300;font-style:normal;font-display:swap}@font-face{font-family:Prompt;src:url(/fonts/Prompt-Regular.ttf) format("truetype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:Prompt;src:url(/fonts/Prompt-Medium.ttf) format("truetype");font-weight:500;font-style:normal;font-display:swap}@font-face{font-family:Prompt;src:url(/fonts/Prompt-SemiBold.ttf) format("truetype");font-weight:600;font-style:normal;font-display:swap}:root{--to-charcoal: #414042;--to-ink: #414042;--to-black: #2A2A2B;--to-paper: #FBF9F4;--to-white: #FFFFFF;--stone-50: #FBF9F4;--stone-100: #F4F0E8;--stone-200: #E9E3D7;--stone-300: #D8CFBE;--stone-400: #B7AC97;--stone-500: #8E8470;--stone-600: #6B6356;--stone-700: #4C463C;--stone-800: #2E2A23;--stone-900: #16140F;--glass-50: #EEF4F1;--glass-100: #DCEAE4;--glass-200: #C2D9CF;--glass-300: #A2C4B6;--glass-400: #7BA593;--glass-500: #5C8475;--glass-600: #486A5E;--glass-700: #38534A;--clay-100: #F3E7DE;--clay-200: #E6CDBD;--clay-300: #D2A98F;--success: #5C8475;--warning: #B9883E;--danger: #A8503F;--bg: var(--to-paper);--bg-raised: var(--to-white);--surface: var(--to-white);--surface-sunken: var(--stone-100);--surface-inverse: var(--to-ink);--text: var(--to-ink);--text-strong: var(--to-ink);--text-muted: var(--stone-600);--text-subtle: var(--stone-500);--text-on-dark: var(--stone-100);--text-on-dark-muted: var(--stone-400);--border: var(--stone-200);--border-strong: var(--stone-300);--border-inverse: rgba(255, 255, 255, .16);--accent: var(--glass-500);--accent-hover: var(--glass-600);--accent-soft: var(--glass-100);--accent-text: var(--glass-700);--on-accent: var(--to-white);--focus-ring: var(--glass-400);--font-display: "TT Drugs", "Prompt", system-ui, sans-serif;--font-text: "Prompt", "TT Drugs", system-ui, sans-serif;--font-mono: "SFMono-Regular", ui-monospace, "Menlo", monospace;--fw-thin: 200;--fw-light: 300;--fw-regular: 400;--fw-medium: 500;--fw-semibold: 600;--fw-bold: 700;--fw-black: 900;--text-display: clamp(3.5rem, 6vw, 6rem);--text-h1: clamp(2.5rem, 4vw, 4rem);--text-h2: clamp(2rem, 3vw, 2.75rem);--text-h3: clamp(1.5rem, 2vw, 1.875rem);--text-h4: 1.25rem;--text-lead: 1.25rem;--text-body: 1rem;--text-sm: .875rem;--text-xs: .75rem;--lh-tight: 1.02;--lh-snug: 1.15;--lh-normal: 1.5;--lh-relaxed: 1.7;--ls-tighter: -.03em;--ls-tight: -.015em;--ls-normal: 0;--ls-wide: .04em;--ls-eyebrow: .22em;--space-0: 0;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.5rem;--space-6: 2rem;--space-7: 3rem;--space-8: 4rem;--space-9: 6rem;--space-10: 8rem;--radius-none: 0;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 14px;--radius-xl: 22px;--radius-pill: 999px;--radius-circle: 50%;--container: 1200px;--container-narrow: 760px;--gutter: clamp(1.25rem, 5vw, 4rem);--control-h-sm: 36px;--control-h-md: 44px;--control-h-lg: 54px;--shadow-xs: 0 1px 2px rgba(22, 20, 15, .05);--shadow-sm: 0 2px 8px rgba(22, 20, 15, .06);--shadow-md: 0 8px 24px rgba(22, 20, 15, .08);--shadow-lg: 0 18px 48px rgba(22, 20, 15, .1);--shadow-xl: 0 32px 80px rgba(22, 20, 15, .14);--sheen: inset 0 1px 0 rgba(255, 255, 255, .6);--border-width: 1px;--border-hairline: 1px solid var(--border);--border-strong-line: 1px solid var(--border-strong);--focus-shadow: 0 0 0 3px var(--accent-soft);--ease-out: cubic-bezier(.22, .61, .36, 1);--ease-in-out: cubic-bezier(.65, 0, .35, 1);--dur-fast: .14s;--dur: .22s;--dur-slow: .42s;--transition: all var(--dur) var(--ease-out);--star: #E8A93B}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-text);font-size:var(--text-body);font-weight:var(--fw-regular);line-height:var(--lh-normal)}h1,h2,h3,h4{font-family:var(--font-display);color:var(--text-strong);margin:0;line-height:var(--lh-snug);letter-spacing:var(--ls-tight);font-weight:var(--fw-bold)}:lang(th) h1,:lang(th) h2,:lang(th) h3,:lang(th) h4,:lang(zh) h1,:lang(zh) h2,:lang(zh) h3,:lang(zh) h4{font-weight:var(--fw-semibold)}:lang(th) h1,:lang(th) h2,:lang(th) h3,:lang(th) h4{line-height:1.35!important}h1{font-size:var(--text-h1);line-height:var(--lh-tight);letter-spacing:var(--ls-tighter)}h2{font-size:var(--text-h2)}h3{font-size:var(--text-h3)}h4{font-size:var(--text-h4)}p{margin:0 0 1em}a{color:var(--text);text-decoration:none;transition:color var(--dur-fast) var(--ease-out)}a:hover{color:var(--glass-500)}button{font-family:var(--font-text)}::selection{background:var(--accent-soft);color:var(--accent-text)}.to-eyebrow,.to-footer-label{font-family:var(--font-text);font-size:var(--text-xs);font-weight:var(--fw-semibold);letter-spacing:var(--ls-eyebrow);text-transform:uppercase;color:var(--text-subtle)}:lang(th) .to-eyebrow,:lang(th) .to-footer-label,:lang(zh) .to-eyebrow,:lang(zh) .to-footer-label{font-size:13px;letter-spacing:.08em}.lp-wrap{max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}.lp-wrap-narrow{max-width:var(--container-narrow);margin:0 auto}img{max-width:100%;display:block}.to-grid{display:grid;grid-template-columns:1fr;gap:var(--to-grid-gap-mobile, 32px)}.to-grid>*{min-width:0}.to-review-columns{columns:1;column-gap:20px}@media (min-width: 620px){.to-review-columns{columns:2}}@media (min-width: 980px){.to-review-columns{columns:3}}@media (min-width: 760px){.to-grid{grid-template-columns:var(--to-grid-cols, 1fr 1fr);gap:var(--to-grid-gap, 48px)}}@media (max-width: 640px){.to-hero-pad{padding-top:40px!important;padding-bottom:48px!important}}.to-btn-primary:hover{background:var(--glass-600)!important}.to-btn-secondary:hover{border-color:var(--to-ink)!important}.to-dropdown-row:hover{background:var(--stone-100)}.to-lang-pill:hover{border-color:var(--border-strong)!important}.to-footer-link{transition:color var(--dur-fast) var(--ease-out)}.to-footer-link:hover{color:var(--glass-300)!important}.to-totop:hover{background:var(--stone-100)}.to-line-btn{transition:transform var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.to-line-btn:hover{transform:translateY(-2px);color:var(--to-paper)!important}.to-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.to-card{transition:box-shadow var(--dur) var(--ease-out),transform var(--dur) var(--ease-out)}.to-img-zoom{transition:transform var(--dur) var(--ease-out)}a:hover .to-img-zoom{transform:scale(1.03)}.to-social-btn{transition:border-color var(--dur-fast) var(--ease-out),opacity var(--dur-fast) var(--ease-out)}.to-social-btn:hover{border-color:var(--glass-300)!important;opacity:.8}.to-footer-grid{display:grid;grid-template-columns:1fr;gap:40px}.to-footer-cluster{display:grid;grid-template-columns:1fr;gap:32px}@media (min-width: 860px){.to-footer-grid{grid-template-columns:minmax(0,1fr) minmax(500px,560px);gap:clamp(40px,5vw,80px)}.to-footer-cluster{grid-template-columns:minmax(280px,320px) 1fr}}.to-header-burger{display:none}.to-mobile-menu{border-top:1px solid var(--border);background:var(--bg)}@media (max-width: 899px){.to-header-nav,.to-lang-pill-wrap,.to-header-book{display:none!important}.to-header-burger{display:flex!important}}.bk-field{width:100%;box-sizing:border-box;font-family:var(--font-text);font-size:15px;padding:12px 14px;border:1px solid var(--border-strong);border-radius:var(--radius-md);background:var(--surface);color:var(--text);outline:none}.bk-field:focus{border-color:var(--glass-500);box-shadow:0 0 0 3px var(--glass-100)}.bk-label{font-size:13px;font-weight:500;color:var(--text-muted);display:block;margin-bottom:8px}