:root{color-scheme:light;--ink:#18314a;--deep:#133455;--navy:#153b65;--blue:#235883;--muted:#697e8e;--paper:#fbf9f3;--line:#dce4e8;--gold:#f5dda2;--warm:#f6f2e8;--white:#fff;--shadow:0 24px 70px rgba(18,46,72,.12);font-family:"Noto Sans Thai","Sarabun",Tahoma,system-ui,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;color:var(--ink);background:#f8fafb;line-height:1.6;-webkit-font-smoothing:antialiased}
button,a{-webkit-tap-highlight-color:transparent}
button{font-family:inherit;cursor:pointer}
a{color:inherit;text-decoration:none}
img{max-width:100%}
:focus-visible{outline:3px solid #e0a844;outline-offset:3px}
.skip-link{position:absolute;top:-60px;left:12px;z-index:300;background:#fff;padding:10px 16px;border-radius:9px}.skip-link:focus{top:12px}
.topbar{height:82px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(22px,6vw,90px);background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:4}
.brand{display:inline-flex;align-items:center;gap:12px}.brand-mark{height:43px;width:43px;display:grid;place-items:center;border-radius:13px;background:var(--navy);color:#fff;font-size:19px;font-weight:800;letter-spacing:.02em;box-shadow:inset 0 0 0 1px rgba(255,255,255,.22)}.brand-copy{display:flex;flex-direction:column;line-height:1.25}.brand-copy strong{font-size:14px;letter-spacing:.03em}.brand-copy small{font-size:10px;letter-spacing:.16em;color:var(--muted);margin-top:6px}.topnav{display:flex;align-items:center;gap:30px;font-size:14px;font-weight:700}.topnav a:hover{color:var(--blue)}
.hero{overflow:hidden;min-height:455px;padding:65px clamp(24px,8vw,120px) 64px;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:55px;align-items:center;background:radial-gradient(ellipse 420px 260px at 86% 52%,rgba(235,215,158,.28),transparent 85%),linear-gradient(125deg,#fdfbf6,#f6f8f8);border-bottom:1px solid #e7e8e4;position:relative}.hero:before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.14;background-image:linear-gradient(#adcede 1px,transparent 1px),linear-gradient(90deg,#adcede 1px,transparent 1px);background-size:27px 27px}.hero-copy,.hero-preview{position:relative;z-index:1}.eyebrow{display:flex;align-items:center;gap:11px;font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.08em}.eyebrow-line{width:30px;height:2px;background:#cba65a}.hero h1{font-size:clamp(28px,3.3vw,48px);letter-spacing:-.03em;line-height:1.35;margin:20px 0 20px;font-weight:800;max-width:800px}.hero h1 em{font-style:normal;color:#225783}.hero p{font-size:clamp(14px,1.3vw,16px);line-height:1.95;color:#536b7d;max-width:620px;margin:0 0 28px}.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}.primary-link{background:var(--navy);color:#fff;border-radius:12px;padding:14px 21px;display:inline-flex;align-items:center;gap:18px;font-weight:750;font-size:14px;box-shadow:0 10px 23px rgba(19,52,85,.16);transition:transform .2s,box-shadow .2s}.primary-link:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(19,52,85,.21)}.primary-link span{font-size:20px}.hero-note{font-size:12px;color:var(--muted)}
.hero-preview{height:330px;max-width:450px;width:100%;justify-self:center}.preview-page{position:absolute;width:175px;height:262px;left:50%;top:30px;border:6px solid white;box-shadow:0 13px 37px rgba(18,46,72,.17);border-radius:5px;overflow:hidden;background:white}.preview-page img{display:block;width:100%;height:100%;object-fit:contain}.preview-back{transform:translateX(-7%) rotate(14deg);top:37px}.preview-mid{transform:translateX(-91%) rotate(-13deg);top:34px}.preview-front{transform:translateX(-50%) rotate(1deg);top:12px;z-index:2}.preview-stamp{position:absolute;right:1%;bottom:0;z-index:3;width:90px;height:90px;border-radius:50%;background:var(--navy);box-shadow:0 6px 0 rgba(20,50,80,.1);border:5px solid #f6e5b9;color:white;display:flex;align-items:center;justify-content:center;gap:5px;font-size:35px;font-weight:800;line-height:1}.preview-stamp span{font-size:12px;line-height:1.4;font-weight:600}
.album{max-width:1430px;margin:0 auto;padding:75px clamp(18px,5vw,65px) 95px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:27px}.section-kicker{display:block;font-size:11px;letter-spacing:.17em;color:#648297;font-weight:800}.section-heading h2,.about h2{font-size:clamp(24px,2.4vw,34px);margin:3px 0 0;letter-spacing:-.02em;line-height:1.4}.section-hint{color:var(--muted);font-size:13px;padding-bottom:3px}
.album-layout{display:grid;grid-template-columns:295px minmax(0,1fr);align-items:start;gap:24px}.contents{padding:20px;background:#fff;border:1px solid #e6ebed;border-radius:17px;position:sticky;top:18px;box-shadow:0 5px 22px rgba(27,55,77,.035)}.contents-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;padding:0 3px 8px;border-bottom:1px solid #ecf0f2}.contents-header h3{font-size:17px;margin:0}.contents-header span{font-size:11px;color:#76909f;letter-spacing:.08em}.contents-list{display:grid;gap:5px}.contents-item{width:100%;display:flex;gap:12px;align-items:center;border:1px solid transparent;border-radius:11px;background:transparent;text-align:left;padding:8px;color:#29465d;transition:background .2s,border-color .2s;min-height:74px}.contents-item:hover{background:#f5f8fa}.contents-item.selected{background:#edf4f8;border-color:#c7dce8}.contents-item img{width:43px;height:65px;border-radius:3px;object-fit:cover;flex:none;box-shadow:0 2px 5px rgba(0,0,0,.08)}.contents-item span{display:flex;flex-direction:column;gap:2px;min-width:0}.contents-item small{font-size:10px;color:#6f8da0;font-weight:750}.contents-item strong{font-size:12.5px;font-weight:750;line-height:1.5}
.reader{overflow:hidden;border-radius:18px;background:white;border:1px solid #e4e9ec;box-shadow:var(--shadow);min-width:0}.reader-top{min-height:95px;padding:17px clamp(16px,3vw,28px);border-bottom:1px solid #eaf0f3;display:flex;align-items:center;justify-content:space-between;gap:18px}.page-meta{display:flex;align-items:center;gap:16px;min-width:0}.page-counter{flex:none;display:grid;place-items:center;width:62px;height:62px;color:var(--navy);background:#f1f6f9;border:1px solid #d8e7ef;border-radius:13px;font-size:14px;font-weight:850;letter-spacing:.03em}.page-meta>div{min-width:0;display:flex;flex-direction:column}.page-meta strong{font-size:clamp(14px,1.7vw,19px);line-height:1.5}.page-meta span:last-child{font-size:12px;color:#78909f;line-height:1.5;margin-top:3px}.light-button{background:#fff;border:1px solid #dce5ec;border-radius:10px;padding:9px 13px;color:#3a607c;font-size:12px;font-weight:750;white-space:nowrap}.light-button:hover{background:#eef4f8}
.viewer-surface{position:relative;display:flex;align-items:center;justify-content:center;padding:30px 34px;min-height:540px;background-color:#eef3f6;background-image:linear-gradient(rgba(114,163,188,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(114,163,188,.09) 1px,transparent 1px);background-size:26px 26px;overflow:hidden;touch-action:pan-y;user-select:none}.page-paper{width:min(100%,515px);box-shadow:0 11px 34px rgba(15,46,72,.16);transition:transform .25s ease;line-height:0;background:white;cursor:zoom-in}.page-paper img{width:100%;height:auto;display:block;outline:0}.page-paper img:focus-visible{outline:3px solid #e5ac39;outline-offset:4px}.page-paper:hover{transform:translateY(-3px)}
.reader-bottom{padding:17px 24px 16px;background:#fff}.page-arrows{display:flex;align-items:center;justify-content:space-between;gap:12px}.nav-button{border:1px solid #cfdee8;background:#f5f8fb;color:#245477;border-radius:11px;display:inline-flex;gap:10px;align-items:center;justify-content:center;font-size:14px;font-weight:800;padding:11px 16px;min-width:123px}.nav-button:hover:not(:disabled){background:#e9f2f8;border-color:#9ebed3}.nav-button:disabled{opacity:.37;cursor:not-allowed}.nav-button-next{background:var(--navy);color:#fff;border-color:var(--navy)}.nav-button-next:hover:not(:disabled){background:#245781;color:#fff}.page-indicator{font-size:13px;font-weight:750;color:#647c8c;text-align:center}.reader-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:16px;margin-top:15px;padding-top:14px;border-top:1px solid #f0f3f4}.reader-actions button,.reader-actions a{background:none;border:0;text-decoration:underline;text-decoration-color:#bdced8;text-underline-offset:4px;color:#436982;font-size:12px;font-weight:700}.reader-actions button:hover,.reader-actions a:hover{color:#102f4e}.reader-progress{height:4px;background:#dbe7ef}.reader-progress>span{display:block;height:100%;background:#c4a255;transition:width .28s ease}
.about{display:flex;align-items:center;justify-content:space-between;gap:35px;padding:40px clamp(25px,8vw,130px);background:#eaf1f5;border-top:1px solid #dee9ee;border-bottom:1px solid #dee9ee}.about-main{max-width:700px}.about p{max-width:700px;margin:14px 0 0;font-size:13px;color:#607788;line-height:1.9}.about-side{display:flex;flex-wrap:wrap;gap:36px}.about-side div{display:flex;flex-direction:column;text-align:center;gap:2px}.about-side strong{font-size:32px;letter-spacing:-.04em;color:var(--navy)}.about-side span{font-size:11px;color:#6e8290}.footer{min-height:115px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px clamp(24px,8vw,130px);background:#fff}.footer>div{display:flex;flex-direction:column;gap:4px}.footer strong{font-size:13px}.footer span,.footer a{color:#778995;font-size:12px}.footer a:hover{color:#1d5277}
.lightbox{position:fixed;inset:0;max-width:none;max-height:none;width:100%;height:100%;padding:0;margin:0;border:0;background:#0e1d2b;color:white;overflow:hidden}.lightbox[open]{display:flex;flex-direction:column}.lightbox::backdrop{background:rgba(10,23,35,.93)}.lightbox-header{z-index:2;flex:none;min-height:70px;padding:10px clamp(12px,3vw,28px);display:flex;gap:12px;align-items:center;justify-content:space-between;background:#142839;border-bottom:1px solid rgba(255,255,255,.13)}.lightbox-header>div:first-child{display:flex;flex-direction:column;line-height:1.4}.lightbox-header span{font-size:11px;color:#a4c2d6}.lightbox-header strong{font-size:13px}.lightbox-tools{display:flex;align-items:center;gap:7px}.lightbox-tools button{background:#29465d;color:#fff;border:1px solid #405e72;border-radius:9px;min-width:39px;height:39px;padding:0 10px;font-size:18px}.lightbox-tools #zoom-reset{font-size:11px}.lightbox-tools .close-button{background:#9c392b;border-color:#9c392b;margin-left:12px}.lightbox-tools button:hover{filter:brightness(1.17)}.lightbox-scroll{width:100%;flex:1;overflow:auto;display:flex;align-items:flex-start;justify-content:flex-start;background:#0b1823;overscroll-behavior:contain}.lightbox-scroll img{display:block;max-width:none;height:auto;margin:auto;box-shadow:0 4px 40px rgba(0,0,0,.25)}.lightbox-footer{text-align:center;font-size:11px;color:#acc0cc;padding:9px 15px;background:#142839;flex:none}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,20px);padding:11px 16px;border-radius:10px;background:#153d61;color:#fff;font-size:13px;opacity:0;pointer-events:none;transition:transform .2s,opacity .2s;z-index:1500;box-shadow:0 5px 15px rgba(0,0,0,.18)}.toast.visible{opacity:1;transform:translate(-50%,0)}
@media(max-width:1030px){.hero{gap:20px;padding-top:50px}.album-layout{grid-template-columns:245px minmax(0,1fr);gap:15px}.contents{padding:12px}.contents-item{gap:9px}.contents-item strong{font-size:11.5px}.viewer-surface{padding:22px 15px}}
@media(max-width:760px){.topbar{height:72px;padding:0 20px}.topnav{gap:15px;font-size:12px}.brand-copy strong{font-size:12px}.brand-copy small{font-size:8px}.hero{grid-template-columns:1fr;gap:10px;padding:36px 24px 25px;min-height:auto}.hero h1{margin:14px 0;font-size:clamp(27px,6vw,39px)}.hero p{font-size:13px}.hero-preview{height:210px;max-width:310px}.preview-page{width:119px;height:179px;top:15px;border-width:4px}.preview-back{top:28px}.preview-mid{top:20px}.preview-front{top:4px}.preview-stamp{width:68px;height:68px;font-size:27px;right:0}.preview-stamp span{font-size:9px}.album{padding:44px 15px 60px}.section-heading{align-items:start;flex-direction:column;gap:6px}.section-hint{font-size:12px}.album-layout{grid-template-columns:1fr}.contents{position:static;order:2;margin-top:9px}.contents-header{margin:0 0 6px}.contents-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.contents-item{min-height:74px}.contents-item img{width:36px;height:54px}.contents-item strong{font-size:11px}.reader{order:1}.reader-top{padding:12px 12px;min-height:74px}.page-counter{width:43px;height:49px;font-size:12px;border-radius:9px}.page-meta{gap:10px}.page-meta strong{font-size:13px}.page-meta span:last-child{font-size:10.5px}.light-button{font-size:11px;padding:7px 9px}.viewer-surface{padding:18px 12px;min-height:0}.page-paper{width:min(100%,440px)}.reader-bottom{padding:13px 12px}.nav-button{padding:9px 11px;min-width:89px;font-size:12px}.page-indicator{font-size:12px}.reader-actions{gap:15px}.about{padding:35px 23px;display:block}.about-side{justify-content:space-between;margin-top:25px;gap:12px}.about-side strong{font-size:25px}.footer{padding:22px;align-items:flex-start}.footer strong{font-size:11px}.footer span,.footer a{font-size:10px}.lightbox-header{padding:9px}.lightbox-header strong{font-size:11px}.lightbox-tools{gap:4px}.lightbox-tools button{min-width:32px;height:35px;padding:0 7px}.lightbox-tools .close-button{margin-left:4px}.lightbox-footer{font-size:10px}}
@media(max-width:380px){.topnav{gap:10px}.brand-mark{height:35px;width:35px;font-size:16px}.brand-copy strong{font-size:11px}.brand-copy small{letter-spacing:.07em}.topnav a{font-size:11px}.contents-list{grid-template-columns:1fr}.contents-item img{width:40px;height:60px}.hero-actions{align-items:start;flex-direction:column;gap:10px}.page-meta span:last-child{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

/* v1.1: keep selected image in view, remove distracting edition statistics */
.reader{scroll-margin-top:14px;overflow-anchor:none}
.album{overflow-anchor:none}
.image-error{position:absolute;left:16px;right:16px;top:16px;z-index:2;text-align:center;background:#fff0ed;color:#8b302d;border:1px solid #d4a3a0;border-radius:10px;padding:12px;font-size:13px}
.image-error[hidden]{display:none!important}
.lightbox-tool-separator{display:block;height:24px;width:1px;background:#5d7686;margin:0 4px}
.lightbox-tools button:disabled{opacity:.35;cursor:default;filter:none}
@media(max-width:420px){.lightbox-header{min-height:70px;align-items:center}.lightbox-header>div:first-child{max-width:120px}.lightbox-header strong{font-size:10px}.lightbox-tools button{min-width:28px;height:32px;padding:0 5px;font-size:15px}.lightbox-tool-separator{margin:0 1px}}

/* v1.2: prevent awkward Thai word splitting on desktop and mobile. */
.keep-together{display:inline-block;white-space:nowrap;vertical-align:baseline}
.hero-copy p,.about-main p{text-wrap:pretty}

/* v1.3: do not show a previous image under a newly selected title. */
.viewer-surface.is-loading .page-paper {visibility:hidden;}
.image-loading {position:absolute;z-index:5;top:50%;left:50%;transform:translate(-50%,-50%);margin:0;width:min(90%,360px);text-align:center;background:rgba(255,255,255,.96);color:#214a6a;border:1px solid #d2e1eb;border-radius:12px;box-shadow:0 8px 24px rgba(18,52,76,.07);padding:20px 15px;font-size:14px;font-weight:700;}
.image-loading[hidden],.lightbox-loading[hidden]{display:none!important;}
.lightbox-loading{position:absolute;z-index:5;top:50%;left:50%;transform:translate(-50%,-50%);padding:16px 22px;background:#203a51;color:white;border-radius:11px;font-size:14px;}

/* v1.4: author copyright on the website footer only; Master PNGs remain unchanged. */
.footer .copyright{display:block;color:#416176;font-size:12px;font-weight:650;line-height:1.65;margin-top:5px}
@media(max-width:760px){.footer .copyright{font-size:11px}}
@media(max-width:440px){.footer{flex-wrap:wrap;gap:13px}.footer>a{margin-left:auto}}

/* v1.6: editorial reflection following the seven-image album. */
.about{padding-top:52px;padding-bottom:56px}
.about-main{max-width:900px}
.about-main p{max-width:850px;font-size:clamp(14px,1.22vw,16px);color:#506b80;line-height:1.9}
.reflection-quote{position:relative;max-width:860px;margin:24px 0 0;padding:19px 0 4px 23px;border-left:3px solid #c5a45b;font-size:clamp(16px,1.52vw,20px);font-weight:500;line-height:1.85;color:#214764;overflow-wrap:break-word}
.reflection-quote strong{font-weight:800;color:#153b65}
@media(max-width:760px){.about{padding-top:34px;padding-bottom:42px}.reflection-quote{font-size:16px;margin-top:18px;padding:11px 0 0 15px}.hero p{font-size:14px}}