/* JIMMY LENS — bộ đo PD tự động (do-khoang-cach-dong-tu). Port of dist/pd.css of jimmy-lens-site onto this
   website's tokens (style.css): optical white page, navy instrument for the camera, grotesk figures. */

.pd-lab{--sans:var(--font);--white:#fff;--night:#0b1626;--silver-2:#c9ced3;--ease:cubic-bezier(.2,.7,.2,1);--focus:var(--accent);--header:114px;--paper:#fff;color:var(--ink)}
.pd-lab ol,.pd-lab ul{margin:0;padding:0;list-style:none}
.pd-lab dl,.pd-lab dd,.pd-lab figure{margin:0}
.pd-lab p{margin:0}
.pd-lab fieldset{min-width:0;margin:0;padding:0;border:0}
.pd-lab fieldset.pd-field{margin-bottom:clamp(26px,3vw,38px)}
.pd-lab p.pd-legend{margin-bottom:14px}
.pd-lab button{font:inherit;cursor:pointer}
.pd-lab .btn .i{width:18px;height:18px;flex:none}
.pd-lab .btn--line{background:transparent;color:var(--navy)}
.pd-lab .btn--line:hover{background:var(--bg-2);color:var(--navy)}
.pd-textbtn{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0;border:0;background:none;color:var(--accent);font:700 .9rem/1.3 var(--sans);text-align:left;text-decoration:underline;text-underline-offset:4px;cursor:pointer}
.pd-textbtn:hover{color:var(--navy)}
.pd-textbtn .i{width:16px;height:16px;flex:none}
.pd-sec{padding-top:24px}

.pd-sec{padding-top:0}
.pd-narrow{max-width:880px}
.pd-lab{position:relative}
.pd-status{margin:0 0 18px;font-size:.9rem;color:#7a4a1c}
.pd-status:empty{display:none}
.pd-kicker{font:700 .72rem/1.4 var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--accent)}
.pd-h{margin:0;font:700 clamp(1.6rem,3vw,2.25rem)/1.1 var(--sans);letter-spacing:-.015em;color:var(--navy)}
.pd-h:focus{outline:none}
.pd-small{font-size:.84rem;line-height:1.6;color:var(--muted)}
.pd-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.pd-actions .btn{flex:1 1 220px}
.pd-noscript{padding:24px 0;color:var(--ink-2)}

/* 1 · Prepare ---------------------------------------------------------------- */
.pd-prepare{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:clamp(32px,6vw,96px);align-items:start}
.pd-field{margin:0 0 clamp(26px,3vw,38px)}
.pd-legend{display:flex;align-items:baseline;gap:14px;margin:0 0 14px;padding:0;font:700 .74rem/1.3 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--navy)}
.pd-legend span{font:700 .74rem/1 var(--sans);letter-spacing:.14em;color:var(--accent)}
.pd-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.pd-option{position:relative;display:block;cursor:pointer}
.pd-option input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
.pd-option__box{display:grid;grid-template-columns:auto minmax(0,1fr);align-content:start;column-gap:14px;row-gap:3px;height:100%;padding:18px 18px 20px;border:1px solid var(--line-2);background:var(--white);transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}
.pd-option__box .i{grid-row:span 3;width:26px;height:26px;margin-top:1px;color:var(--ink-2)}
.pd-option strong{font:700 1rem/1.35 var(--sans);color:var(--navy)}
.pd-option em{font:650 .64rem/1.4 var(--sans);font-style:normal;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.pd-option small{font-size:.84rem;line-height:1.55;color:var(--ink-2)}
.pd-option:hover .pd-option__box{border-color:var(--ink)}
.pd-option input:checked+.pd-option__box{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.pd-option input:checked+.pd-option__box em{color:var(--ink)}
.pd-option input:focus-visible+.pd-option__box{outline:2px solid var(--focus);outline-offset:2px}
.pd-steps{counter-reset:pd-step;margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.pd-steps li{counter-increment:pd-step;display:grid;grid-template-columns:30px minmax(0,1fr);gap:8px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.94rem;line-height:1.6;color:var(--ink-2)}
.pd-steps li::before{content:"0" counter(pd-step);font:700 .78rem/1.9 var(--sans);letter-spacing:.12em;color:var(--accent)}
.pd-private{display:flex;align-items:flex-start;gap:10px;margin-top:18px;font-size:.82rem;line-height:1.55;color:var(--muted)}
.pd-private .i{width:18px;height:18px;flex:none;margin-top:1px}
.pd-prepare__visual{position:sticky;top:calc(var(--header) + 24px);padding:clamp(20px,3vw,36px) clamp(20px,3vw,36px) 18px;background:var(--white);border:1px solid var(--line)}
.pd-prepare__visual .dg{max-width:320px;margin:0 auto}
.pd-howto{padding:0;overflow:hidden}
.pd-howto video{display:block;width:100%;height:auto;aspect-ratio:1080/1350;background:#f4f7f9}
.pd-howto figcaption{padding:14px 18px 16px}
.pdset .card{fill:rgba(12,25,41,.05);stroke:currentColor;stroke-width:1.3}
.pdopt .sight{stroke:currentColor;stroke-width:1}
.pdopt .far{stroke:var(--silver-2);stroke-width:1;stroke-dasharray:4 5}
.pdopt .plane{stroke:currentColor;stroke-width:1.3}
.pdopt .plane--dash{stroke:var(--silver-2);stroke-dasharray:3 4}
.pd-principles{margin-top:clamp(24px,3vw,36px)}
.dg-scroll .pdopt{min-width:560px}

/* 2 · Camera: a dark instrument around a 3:4 viewfinder ---------------------- */
.pd-camera{max-width:780px;margin:0 auto;padding:clamp(16px,2.4vw,28px);background:var(--night);color:#e8ebef}
.pd-camera__top{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;align-items:center;gap:16px;max-width:560px;margin:0 auto 16px}
.pd-camera__state{display:grid;gap:4px;min-width:0}
.pd-camera .pd-kicker{color:var(--silver-2)}
.pd-camera__state strong{font:500 1rem/1.4 var(--sans);color:#fff}
.pd-camera__distance{font:600 1.3rem/1 var(--sans);color:#fff;white-space:nowrap}
.pd-camera__score{min-width:3.6ch;text-align:right;font:600 1.3rem/1 var(--sans);color:var(--silver-2)}
.pd-icon{display:grid;place-items:center;width:44px;height:44px;border:1px solid rgba(255,255,255,.28);background:none;color:#fff}
.pd-icon:hover{border-color:#fff}
.pd-icon .i{width:20px;height:20px}
/* Phone and tablet share one portrait frame; the preview crop equals the captured crop. */
.pd-viewfinder{position:relative;width:min(100%,430px,54svh);aspect-ratio:3/4;margin-inline:auto;overflow:hidden;background:#05070a}
.pd-viewfinder video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.pd-viewfinder video.is-selfie{transform:scaleX(-1)}
.pd-live-overlay{position:absolute;inset:0;width:100%;height:100%;z-index:2;pointer-events:none}
.pd-face-guide{position:absolute;z-index:1;left:50%;top:var(--guide-top,14%);width:var(--guide-w,58%);height:var(--guide-h,64%);transform:translateX(-50%);border:1px solid rgba(255,255,255,.5);border-radius:48% 48% 43% 43% / 40% 40% 58% 58%;box-shadow:0 0 0 999px rgba(5,7,10,.28);pointer-events:none;transition:border-color .3s,border-width .3s}
.pd-camera.is-ready .pd-face-guide{border:2px solid #fff}
.pd-eye-level{position:absolute;left:10%;right:10%;top:42%;border-top:1px dashed rgba(255,255,255,.45)}
.pd-gauge{position:absolute;z-index:3;right:10px;top:16%;bottom:16%;width:30px}
.pd-gauge::before{content:"";position:absolute;right:6px;top:0;bottom:0;border-right:1px solid rgba(255,255,255,.35)}
.pd-gauge__band{position:absolute;right:4px;width:5px;top:33.3%;height:40%;background:rgba(255,255,255,.45)}
#pd-gauge-marker{position:absolute;right:0;width:16px;height:2px;margin-top:-1px;background:#fff;top:var(--marker,50%);opacity:0;transition:top .2s var(--ease),opacity .2s}
.pd-camera.has-distance #pd-gauge-marker{opacity:1}
.pd-gauge b{position:absolute;right:18px;transform:translateY(-50%);font:600 .6rem/1 var(--sans);letter-spacing:.06em;color:rgba(255,255,255,.72);white-space:nowrap}
.pd-gauge__near{top:0}.pd-gauge__mid{top:50%}.pd-gauge__far{top:100%}
.pd-live-progress{position:absolute;z-index:3;left:0;right:0;bottom:0;height:3px;background:rgba(255,255,255,.14)}
.pd-live-progress i{display:block;width:0;height:100%;background:#fff;transition:width .15s linear}
.pd-flash{position:absolute;z-index:4;inset:0;background:#fff;opacity:0;pointer-events:none}
.pd-camera.is-capturing .pd-flash{animation:pd-flash .55s ease-out}
@keyframes pd-flash{0%{opacity:.75}100%{opacity:0}}
.pd-loading{position:absolute;z-index:5;left:16px;right:16px;bottom:18px;display:grid;gap:10px;padding:14px 16px;background:rgba(8,11,16,.82);font-size:.84rem;color:#fff}
.pd-loading i{display:block;height:2px;background:rgba(255,255,255,.2)}
.pd-loading b{display:block;width:0;height:100%;background:#fff;transition:width .2s linear}
.pd-camera__hint{min-height:3.1em;max-width:460px;margin:16px auto 12px;text-align:center;font:500 1.02rem/1.5 var(--sans);color:#fff}
.pd-live-checks{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;max-width:560px;margin:0 auto}
.pd-live-checks li{display:inline-flex;align-items:center;gap:6px;min-height:32px;padding:0 12px 0 9px;border:1px solid rgba(255,255,255,.18);font-size:.78rem;color:var(--silver-2);transition:border-color .25s,color .25s}
.pd-live-checks .i{width:14px;height:14px;opacity:.2;transition:opacity .25s}
.pd-live-checks li.is-ok{border-color:rgba(255,255,255,.7);color:#fff}
.pd-live-checks li.is-ok .i{opacity:1}
.pd-lab[data-method="iris"] [data-card-only]{display:none}
.pd-lab:not([data-method="iris"]) [data-iris-only]{display:none}
.pd-lab[data-method="iris"] #pd-shutter{visibility:hidden}
.pd-short{display:none}
.pd-camera__controls{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;justify-items:center;max-width:430px;margin:18px auto 0}
.pd-round{display:grid;place-items:center;width:48px;height:48px;border:1px solid rgba(255,255,255,.3);border-radius:50%;background:none;color:#fff}
.pd-round:hover{border-color:#fff}
.pd-round .i{width:20px;height:20px}
.pd-round--spacer{visibility:hidden}
.pd-shutter{position:relative;width:74px;height:74px;padding:0;border:2px solid #fff;border-radius:50%;background:none}
.pd-shutter span{position:absolute;inset:6px;border-radius:50%;background:#fff;transition:transform .2s var(--ease)}
.pd-shutter:active span{transform:scale(.9)}
.pd-shutter:disabled{opacity:.35;cursor:default}
.pd-camera__note{max-width:430px;margin:14px auto 0;text-align:center;font-size:.78rem;line-height:1.55;color:var(--silver-2)}

@media (min-width:901px){
 .pd-camera{display:grid;grid-template-columns:minmax(0,430px) minmax(0,1fr);column-gap:clamp(28px,4vw,56px);align-items:start;max-width:1000px;padding:clamp(20px,2.6vw,32px)}
 .pd-camera .pd-viewfinder{grid-column:1;grid-row:1 / span 5;width:min(100%,430px,calc((100svh - 170px) * .75));margin:0}
 .pd-camera__top,.pd-camera__hint,.pd-live-checks,.pd-camera__controls,.pd-camera__note{grid-column:2;max-width:none;margin-inline:0}
 .pd-camera__top{margin:0 0 6px}
 .pd-camera__hint{min-height:4.6em;margin:18px 0;text-align:left;font-size:1.15rem}
 .pd-live-checks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));justify-content:start}
 .pd-camera__controls{grid-template-columns:auto auto;justify-content:start;column-gap:18px;margin-top:26px}
 .pd-camera__controls .pd-round--spacer{display:none}
 .pd-camera__note{margin-top:18px;text-align:left}
}

/* 3 · Processing and 4 · Failed ------------------------------------------------ */
.pd-processing{display:grid;justify-items:center;gap:12px;max-width:620px;margin:0 auto;padding:clamp(32px,6vw,72px) 0;text-align:center}
.pd-orbit{position:relative;width:72px;height:72px;margin-bottom:10px;border:1px solid var(--line-2);border-radius:50%}
.pd-orbit i{position:absolute;inset:-1px;border:1px solid transparent;border-top-color:var(--ink);border-radius:50%;animation:pd-spin 1.1s linear infinite}
@keyframes pd-spin{to{transform:rotate(360deg)}}
.pd-meter{width:min(100%,360px);height:2px;margin-top:6px;background:var(--line)}
.pd-meter i{display:block;width:0;height:100%;background:var(--ink);transition:width .3s var(--ease)}
.pd-failed{display:grid;gap:12px;max-width:640px;padding:clamp(16px,3vw,32px) 0}
.pd-failed__reason{font-size:1.05rem;line-height:1.6;color:var(--ink)}
.pd-tips{margin-top:6px;border-top:1px solid var(--line)}
.pd-tips li{padding:11px 0;border-bottom:1px solid var(--line);font-size:.9rem;color:var(--ink-2)}

/* 5 · Report -------------------------------------------------------------------- */
.pd-report__head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;padding-bottom:18px;border-bottom:1px solid var(--ink)}
.pd-report__head .pd-h{margin-top:8px}
.pd-badge{padding:9px 12px;border:1px solid var(--navy);font:700 .66rem/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;white-space:nowrap;color:var(--navy)}
.pd-badge[data-level="high"]{background:var(--navy);color:#fff}
.pd-report__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,72px);padding:clamp(26px,4vw,48px) 0}
.pd-reading__label{margin:0;font:700 .74rem/1.3 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--navy)}
.pd-result-value{display:flex;align-items:baseline;gap:12px;margin:8px 0 6px}
.pd-result-value output{font:700 clamp(4rem,10vw,6.8rem)/.95 var(--sans);letter-spacing:-.035em;color:var(--navy);font-variant-numeric:tabular-nums}
.pd-result-value span{font:600 1.25rem/1 var(--sans);color:var(--muted)}
.pd-reading__range{font-size:.95rem;color:var(--ink-2)}
.pd-reading__range strong{font-weight:600;color:var(--ink)}
.pd-reading__confidence{margin-top:4px;font-size:.88rem;color:var(--muted)}
.pd-near{margin-top:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pd-near div{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 0}
.pd-near dt{font-size:.92rem}
.pd-near small{display:block;font-size:.76rem;color:var(--muted)}
.pd-near dd{margin:0;font:700 1.8rem/1 var(--sans);color:var(--navy);white-space:nowrap;font-variant-numeric:tabular-nums}
.pd-reading .pd-small{margin-top:14px}
.pd-tools{display:flex;flex-wrap:wrap;gap:4px 24px;margin-top:16px}
.pd-tools button,.pd-tools a{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0;border:0;background:none;font:700 .72rem/1 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);text-decoration:none;cursor:pointer}
.pd-tools button:hover,.pd-tools a:hover{color:var(--navy);text-decoration:underline;text-underline-offset:4px}
.pd-tools .i{width:18px;height:18px}
.pd-proof{display:grid;gap:16px;align-content:start}
.pd-eyes{margin:0;background:var(--night)}
.pd-eyes canvas{display:block;width:100%;height:auto}
.pd-eyes figcaption{padding:0 16px 14px;font-size:.74rem;letter-spacing:.06em;color:var(--silver-2)}
.pd-face-model{background:var(--night);color:#e8ebef}
.pd-model-stage canvas{display:block;width:100%;height:260px;cursor:grab}
.pd-model-stage p{padding:40px 16px;color:var(--silver)}
.pd-model-controls{display:flex;justify-content:center;gap:8px;padding:8px 12px}
.pd-model-controls button{min-width:44px;min-height:40px;padding:0 14px;border:1px solid rgba(255,255,255,.25);background:none;color:#fff;font-size:.8rem}
.pd-model-controls button:hover{border-color:#fff}
.pd-face-model .pd-small{padding:0 16px 14px;color:var(--silver-2)}
.pd-specs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:1px solid var(--ink)}
.pd-specs div{padding:16px 16px 18px 0;border-bottom:1px solid var(--line)}
.pd-specs div+div{padding-left:16px;border-left:1px solid var(--line)}
.pd-specs dt{margin-bottom:6px;font:700 .64rem/1.35 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.pd-specs dd{font-size:.9rem;line-height:1.5;color:var(--ink)}
.pd-history{margin-top:30px}
.pd-history ol{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 8px}
.pd-history li{display:grid;gap:4px;padding:9px 13px;border:1px solid var(--line-2);font:700 1.05rem/1 var(--sans);color:var(--navy);font-variant-numeric:tabular-nums}
.pd-history li small{font:600 .66rem/1 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.pd-history li.is-current{border-color:var(--ink)}
.pd-quality{margin-top:30px}
.pd-quality-head{display:flex;justify-content:space-between;gap:16px;padding:0 0 12px;font-size:.92rem}
.pd-quality-head span{font:700 .68rem/1.8 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.pd-quality ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));column-gap:28px;border-top:1px solid var(--line)}
.pd-quality li{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:.86rem;color:var(--ink-2)}
.pd-quality li strong{font-weight:600;color:var(--ink);white-space:nowrap}
.pd-quality li.warn strong{color:#7a4a1c}
.pd-report>.pd-small{margin-top:14px}
.pd-adjust{margin-top:30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pd-adjust summary{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 0;cursor:pointer;list-style:none;font:700 1.05rem/1.35 var(--sans);color:var(--navy)}
.pd-adjust summary::-webkit-details-marker{display:none}
.pd-adjust summary .i{flex:none;width:20px;height:20px;transition:transform .4s var(--ease)}
.pd-adjust[open] summary .i{transform:rotate(45deg)}
.pd-adjust>.pd-small{max-width:640px}
.pd-overlay-wrap{margin:16px 0;background:var(--night)}
.pd-overlay-wrap canvas{display:block;width:auto;max-width:100%;max-height:60svh;margin:0 auto}
.pd-point-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;max-width:480px}
.pd-point-tabs button{min-height:44px;border:1px solid var(--line-2);background:var(--white);font-size:.86rem}
.pd-point-tabs button[aria-pressed="true"]{border-color:var(--ink);background:var(--ink);color:#fff}
.pd-fine-control{display:flex;flex-wrap:wrap;align-items:center;gap:24px;margin:18px 0}
.pd-fine-control>div:first-child{display:grid;justify-items:center;gap:8px}
.pd-fine-control canvas{width:160px;height:160px;border-radius:50%;background:var(--night)}
.pd-fine-control span{font-size:.8rem;color:var(--muted)}
.pd-direction{display:grid;grid-template-columns:repeat(3,48px);grid-template-rows:repeat(3,48px);gap:4px}
.pd-direction button{border:1px solid var(--line-2);background:var(--white);font-size:1.1rem}
.pd-direction button:hover{border-color:var(--ink)}
.pd-direction [data-dy="-1"]{grid-area:1/2}.pd-direction [data-dx="-1"]{grid-area:2/1}.pd-direction [data-dx="1"]{grid-area:2/3}.pd-direction [data-dy="1"]{grid-area:3/2}
.pd-adjust #pd-restore{margin-bottom:18px}
.pd-estimate-note{max-width:720px;margin-top:24px;padding-left:16px;border-left:1px solid var(--line-2);font-size:.84rem;line-height:1.6;color:var(--muted)}

/* Goal: Chỉ PD · PD + số đo lắp kính --------------------------------------------- */
.pd-lab[data-goal="pd"] [data-goal="fit"],.pd-lab[data-goal="fit"] [data-goal="pd"]{display:none}
.pd-option input:disabled{cursor:not-allowed}
.pd-option input:disabled+.pd-option__box{opacity:.45}
.pd-option:hover input:disabled+.pd-option__box{border-color:var(--line-2)}

/* Số đo lắp kính (pd-fitting.js): front photo, then the optional side photo ---------- */
.pd-h3{margin:4px 0 0;font:700 clamp(1.3rem,2.2vw,1.65rem)/1.2 var(--sans);letter-spacing:-.01em;color:var(--navy)}
.pd-fit{margin-top:clamp(36px,5vw,64px);padding-top:clamp(22px,3vw,34px);border-top:1px solid var(--ink)}
.pd-fit__head{display:grid;gap:6px;max-width:760px}
.pd-fit__head .pd-small{margin-top:4px}
.pd-fit__grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:start;margin-top:clamp(18px,3vw,30px)}
.pd-fit__photo,.pd-fit__numbers{display:grid;gap:14px;min-width:0}
.pd-fit__stage{background:var(--night)}
.pd-fit__stage canvas{display:block;width:100%;height:auto;touch-action:none;cursor:grab}
.fit-status:empty{display:none}
.fit-edges{display:grid;gap:8px}
.fit-edges__eye{display:grid;grid-template-columns:78px repeat(4,minmax(0,1fr));align-items:center;gap:6px}
.fit-edges__eye span{font:700 .68rem/1.3 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--navy)}
.fit-edges button{min-height:40px;padding:0 6px;border:1px solid var(--line-2);background:var(--white);font-size:.8rem;line-height:1.2;color:var(--ink)}
.fit-edges button:hover{border-color:var(--ink)}
.fit-edges button[aria-pressed="true"]{border-color:var(--teal-ink);background:var(--teal-ink);color:#fff}
.pd-fit .pd-fine-control{margin:0}
.pd-direction button:disabled{opacity:.3;cursor:default}
.pd-direction button:disabled:hover{border-color:var(--line-2)}
.pd-fit .pd-tools{margin-top:0}
.fit-mirror{display:flex;align-items:flex-start;gap:10px;font-size:.86rem;line-height:1.5;color:var(--ink-2);cursor:pointer}
.fit-mirror input{flex:none;width:20px;height:20px;margin:1px 0 0;accent-color:var(--navy)}
.fit-values{border-top:1px solid var(--ink)}
.fit-values>div{display:grid;gap:6px;padding:14px 0;border-bottom:1px solid var(--line)}
.fit-values dt{font:700 .68rem/1.4 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--navy)}
.fit-values dt small{display:block;margin-top:3px;font:400 .8rem/1.45 var(--sans);letter-spacing:0;text-transform:none;color:var(--muted)}
.fit-values dd{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 12px;font:700 clamp(1.25rem,2.2vw,1.55rem)/1.2 var(--sans);color:var(--navy);font-variant-numeric:tabular-nums}
.fit-values dd small{font:500 .84rem/1.3 var(--sans);color:var(--muted)}
.fit-notes{display:grid;gap:8px}
.fit-notes:empty{display:none}
.fit-notes li{position:relative;padding-left:18px;font-size:.86rem;line-height:1.55;color:var(--ink-2)}
.fit-notes li::before{content:"";position:absolute;left:1px;top:.55em;width:8px;height:8px;border-radius:50%;background:var(--ok)}
.fit-notes li.warn{color:#6b4a14}
.fit-notes li.warn::before{background:#b07a2a}

.fit-side{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(24px,4vw,56px);align-items:start;margin-top:clamp(32px,5vw,56px);padding-top:clamp(22px,3vw,32px);border-top:1px solid var(--line)}
.fit-side__intro{display:grid;gap:6px;min-width:0}
.fit-side__intro .pd-steps{margin-top:12px}
.fit-side__intro .pd-actions{margin-top:18px}
.fit-side__status{margin:14px 0 0}
.fit-side__visual{padding:clamp(16px,2.4vw,28px) clamp(16px,2.4vw,28px) 16px;background:var(--white);border:1px solid var(--line)}
.fit-side__visual .dg{max-width:380px;margin:0 auto}
.fitset .far{fill:none;stroke:var(--silver);stroke-width:1;stroke-dasharray:4 4}
.fitset .dim{fill:none}
.fitset .glass{fill:var(--aqua);stroke:currentColor;stroke-width:1.2}
.fitset .wedge{fill:var(--aqua-2);stroke:none}
.fit-live,.fit-mark{grid-column:1/-1}
.pd-lab,.pd-lab .pd-panel,.pd-lab .pd-fit,.pd-lab .fit-live,.pd-lab .fit-mark{scroll-margin-top:calc(var(--header) + 12px)}
.fit-live{display:grid;justify-items:center;gap:12px;padding:clamp(16px,2.4vw,28px);background:var(--night);color:#e8ebef}
.fit-live__view{position:relative;width:min(100%,400px,56svh);aspect-ratio:3/4;max-width:100%;overflow:hidden;background:#05070a}
.fit-live__view video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.fit-live__plumb{position:absolute;left:50%;top:5%;bottom:5%;border-left:1px dashed rgba(255,255,255,.5);pointer-events:none}
.fit-level{position:absolute;left:50%;bottom:14px;width:84px;height:84px;margin-left:-42px;border:1.5px solid rgba(255,255,255,.6);border-radius:50%;background:rgba(5,7,10,.4);pointer-events:none}
.fit-level::before,.fit-level::after{content:"";position:absolute;background:rgba(255,255,255,.35)}
.fit-level::before{left:50%;top:8px;bottom:8px;width:1px}
.fit-level::after{top:50%;left:8px;right:8px;height:1px}
.fit-level i{position:absolute;left:50%;top:50%;width:18px;height:18px;margin:-9px 0 0 -9px;border-radius:50%;background:#f2b84b;transform:translate(var(--dx,0px),var(--dy,0px));transition:transform .12s linear,background-color .2s}
.fit-level.is-ok{border-color:#5fdcaa}
.fit-level.is-ok i{background:#5fdcaa}
.fit-live .pd-kicker{text-align:center;color:var(--silver-2)}
.fit-live__hint{min-height:3em;max-width:420px;text-align:center;font:500 1rem/1.5 var(--sans);color:#fff}
.fit-live .pd-camera__controls{width:100%;margin:0 auto}
.fit-mark{display:grid;gap:14px;min-width:0}
.fit-mark__prompt{padding:12px 14px;border-left:3px solid var(--teal-ink);background:var(--aqua);font-size:.95rem;line-height:1.5;color:var(--ink)}
.fit-mark__prompt b{color:var(--navy)}
.fit-mark__stage{background:var(--night)}
.fit-mark__stage canvas{display:block;max-width:100%;margin:0 auto;touch-action:none;cursor:crosshair}
.fit-points{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.fit-points button{display:flex;align-items:center;gap:8px;min-height:44px;padding:6px 10px;border:1px solid var(--line-2);background:var(--white);font-size:.84rem;line-height:1.3;color:var(--ink);text-align:left}
.fit-points button:hover{border-color:var(--ink)}
.fit-points button b{display:grid;place-items:center;flex:none;width:24px;height:24px;border:1px solid var(--line);border-radius:50%;font-size:.74rem;color:var(--muted);font-variant-numeric:tabular-nums}
.fit-points button.is-set b{border-color:var(--navy);background:var(--navy);color:#fff}
.fit-points button[aria-pressed="true"]{border-color:var(--teal-ink);box-shadow:inset 0 0 0 1px var(--teal-ink)}
.fit-mark .pd-fine-control,.fit-mark .pd-tools{margin:0}
.pd-fit-offer{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;margin-top:clamp(28px,4vw,44px);padding:16px 18px;border:1px solid var(--aqua-2);background:var(--aqua)}
.pd-fit-offer p{flex:1 1 320px;font-size:.92rem;line-height:1.55;color:var(--ink-2)}
.pd-fit-offer strong{color:var(--navy)}

/* Responsive -------------------------------------------------------------------- */
@media (max-width:1020px){
 .pd-specs{grid-template-columns:repeat(2,minmax(0,1fr))}
 .pd-specs div+div{padding-left:0;border-left:0}
 .pd-specs div:nth-child(even){padding-left:16px;border-left:1px solid var(--line)}
}
@media (max-width:900px){
 .pd-prepare{grid-template-columns:minmax(0,1fr)}
 .pd-prepare__visual{position:static;order:-1;display:grid;grid-template-columns:120px minmax(0,1fr);align-items:center;gap:16px;padding:14px 16px}
 .pd-prepare__visual .dg{max-width:120px;margin:0}
 .pd-prepare__visual figcaption{padding:0;border:0}
 .pd-report__grid{grid-template-columns:minmax(0,1fr)}
 .pd-fit__grid,.fit-side{grid-template-columns:minmax(0,1fr)}
 .pd-quality ul{grid-template-columns:repeat(2,minmax(0,1fr))}
 /* The camera opens as a full-screen instrument on phones and small tablets. */
 html.pd-immersive,html.pd-immersive body{overflow:hidden}
 .pd-camera.is-immersive{position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;justify-content:center;max-width:none;margin:0;padding:max(12px,env(safe-area-inset-top)) 14px max(12px,env(safe-area-inset-bottom));overflow-y:auto}
 .pd-camera.is-immersive .pd-viewfinder{flex:none;width:min(100%,430px,calc((100svh - 262px) * .75))}
 .pd-camera.is-immersive .pd-camera__note{display:none}
 .pd-camera.is-immersive .pd-camera__top{margin-bottom:12px}
 .pd-camera.is-immersive .pd-camera__hint{margin:10px auto 8px;min-height:3em;font-size:.95rem}
 .pd-camera.is-immersive .pd-live-checks{flex:none;flex-wrap:nowrap;justify-content:flex-start;gap:6px;max-width:none;margin:0 -14px;padding:0 14px;overflow-x:auto;scrollbar-width:none}
 .pd-camera.is-immersive .pd-live-checks::-webkit-scrollbar{display:none}
 .pd-camera.is-immersive .pd-live-checks li{flex:none;padding:0 10px;font-size:.74rem}
 .pd-camera.is-immersive .pd-live-checks .i{display:none}
 .pd-camera.is-immersive .pd-long{display:none}
 .pd-camera.is-immersive .pd-short{display:inline}
 /* Centred while the chips fit, scrollable from the first chip once they do not (hidden chips included). */
 .pd-camera.is-immersive .pd-live-checks::before,.pd-camera.is-immersive .pd-live-checks::after{content:"";flex:1 0 0}
 .pd-camera.is-immersive .pd-camera__controls{margin-top:12px}
 .pd-camera.is-immersive .pd-shutter{width:66px;height:66px}
 .fit-live.is-immersive{position:fixed;inset:0;z-index:80;align-content:center;padding:max(12px,env(safe-area-inset-top)) 14px max(12px,env(safe-area-inset-bottom));overflow-y:auto}
 .fit-live.is-immersive .fit-live__view{width:min(100%,430px,calc((100svh - 200px) * .75))}
}
@media (max-width:560px){
 .pd-options{grid-template-columns:minmax(0,1fr)}
 .pd-camera__top{grid-template-columns:minmax(0,1fr) auto auto;gap:12px}
 .pd-camera__score{display:none}
 .pd-live-checks li{font-size:.72rem;padding:0 9px 0 7px}
 .pd-report__head{display:grid;align-items:start}
 .pd-report__head .pd-badge{justify-self:start}
 .pd-specs{grid-template-columns:minmax(0,1fr)}
 .pd-specs div:nth-child(even){padding-left:0;border-left:0}
 .pd-quality ul{grid-template-columns:minmax(0,1fr)}
 .pd-actions .btn{flex-basis:100%}
 .fit-edges__eye{grid-template-columns:repeat(4,minmax(0,1fr))}
 .fit-edges__eye span{grid-column:1/-1}
 .fit-points{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (prefers-reduced-motion:reduce){
 .pd-lab *,.pd-lab *::before,.pd-lab *::after{animation:none!important;transition:none!important}
}

/* Flow: 1 Chuẩn bị · 2 Quét tự động · 3 Kết quả · 4 Xác nhận ------------------------ */
.pd-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin:0 0 clamp(24px,3vw,36px)!important;background:var(--line-2);border:1px solid var(--line-2)}
.pd-flow li{display:flex;align-items:center;gap:10px;min-width:0;padding:12px 14px;background:#fff;font-size:.86rem;font-weight:600;color:var(--muted)}
.pd-flow li span{display:grid;place-items:center;flex:none;width:26px;height:26px;border:1px solid var(--line);border-radius:50%;font-size:.78rem;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums}
.pd-flow li.is-done{color:var(--ink-2)}
.pd-flow li.is-done span{border-color:var(--navy);background:var(--navy);color:#fff}
.pd-flow li[aria-current]{background:var(--bg-2);color:var(--navy);box-shadow:inset 0 -2px 0 var(--navy)}
.pd-flow li[aria-current] span{border-color:var(--navy);color:var(--navy)}
.pd-lab[data-step="manual"] .pd-flow{display:none}
.pd-alt{margin-top:14px}

/* Setup diagram (Minh họa nguyên lý) ------------------------------------------------ */
.pd-lab .diagram{display:grid;gap:14px}
.pd-lab .diagram figcaption{padding-top:12px;border-top:1px solid var(--line);font-size:.8rem;line-height:1.55;color:var(--muted)}
.pd-lab .diagram__tag{margin-right:6px;font:700 .62rem/1 var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--navy)}
.pd-lab .dg{display:block;width:100%;height:auto;overflow:visible;color:var(--navy)}
.pd-lab .dg .lens{fill:none;stroke:currentColor;stroke-width:1.2}
.pd-lab .dg .hair{fill:none;stroke:currentColor;stroke-width:.9}
.pd-lab .dg .lbl{font:600 16px var(--sans);fill:currentColor}
.pd-lab .dg .lbl--s{font-size:13.5px}
.pd-lab .dg .lbl--halo{paint-order:stroke;stroke:#fff;stroke-width:6px;stroke-linejoin:round}
.pd-lab .dg .cap{font:700 12px var(--sans);letter-spacing:.16em;fill:var(--muted)}
.pd-lab .pd .pupil{fill:currentColor}
.pd-lab .pd .dim{stroke:currentColor;stroke-width:1.3}

/* Confirmation (bước 4) -------------------------------------------------------------- */
.pd-confirm{display:grid;gap:10px;margin-top:22px;padding:18px 18px 20px;border:1px solid var(--line-2);background:var(--bg-2)}
.pd-confirm[data-state="confirmed"]{border-color:var(--navy);background:#fff;box-shadow:inset 3px 0 0 var(--navy)}
.pd-confirm[data-state="differs"],.pd-confirm[data-state="unstable"]{border-color:#e2c9a4;background:#fffaf2}
.pd-confirm__title{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.pd-confirm__title strong{font-size:1.1rem;color:var(--navy)}
.pd-confirm__badge{padding:4px 8px;border:1px solid var(--line);font:700 .72rem/1 var(--sans);letter-spacing:.08em;color:var(--muted);font-variant-numeric:tabular-nums}
.pd-confirm[data-state="confirmed"] .pd-confirm__badge{border-color:var(--navy);background:var(--navy);color:#fff}
.pd-confirm__list{display:flex;flex-wrap:wrap;gap:8px}
.pd-confirm__list li{display:grid;gap:4px;min-width:84px;padding:8px 12px;border:1px solid var(--line-2);background:#fff}
.pd-confirm__list li span{font:700 .62rem/1 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.pd-confirm__list li strong{font-size:1.05rem;color:var(--navy);font-variant-numeric:tabular-nums}
.pd-confirm__list li.is-current{border-color:var(--navy)}
.pd-confirm .btn{justify-self:start;margin-top:4px}
.pd-reading .pd-actions{margin-top:22px}
.pd-quality #pd-quality-note{margin-top:12px;padding:10px 12px;border-left:3px solid #b07a2a;background:#fffaf2;color:#6b4a14}
.pd-fallback{display:grid;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.pd-fallback .btn{justify-self:start}
.pd-failed{margin:0 auto}

/* Manual fallback (pd-manual.js) -------------------------------------------------------- */
.pm{display:grid;gap:16px}
.pm-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;padding-bottom:14px;border-bottom:1px solid var(--navy)}
.pm-head .pd-h{margin-top:6px}
.pm-intro{max-width:760px}
.pm-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,340px);gap:clamp(20px,3vw,36px);align-items:start}
.pm-main,.pm-side{display:flex;flex-direction:column;gap:12px;min-width:0}
.pm-step{flex-direction:row;flex-wrap:wrap;align-items:center;gap:8px 16px}
.pm-step p{flex:1 1 300px;color:var(--ink)}
.pm-chips{display:flex;flex:1 1 100%;flex-wrap:wrap;gap:4px 8px}
.pm-chip{display:flex;align-items:center;gap:8px;padding:4px 8px;border:1px solid transparent;background:none;font-size:.82rem;color:var(--muted);text-align:left}
.pm-chip i{flex:none;width:14px;height:14px;border:2px solid;border-radius:50%}
.pm-chip.set{color:var(--navy)}
.pm-chip.on{border-color:var(--line);background:var(--bg-2);font-weight:700}
.pm-chip:disabled{opacity:.7;cursor:default}
.pm-upload{display:flex;flex-direction:column;align-items:center;gap:18px;padding:clamp(24px,4vw,44px);border:1px dashed var(--silver);background:var(--bg-2);text-align:center}
.pm-upload__text{max-width:420px;color:var(--ink-2)}
.pm-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}
.pm-btns .btn{position:relative}
.pm-stage{position:relative;background:var(--night);outline:none}
.pm-stage:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.pm-stage #pm-canvas{display:block;width:100%;touch-action:none;cursor:crosshair}
.pm-loupe{position:absolute;top:10px;left:10px;border:2px solid #fff;border-radius:50%;box-shadow:0 6px 18px rgba(0,0,0,.35);pointer-events:none}
.pm-toolbar{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;padding:10px;border:1px solid var(--line-2);border-top:0;background:#fff}
.pm-tgroup{display:flex}
.pm-tgroup button{min-width:44px;min-height:44px;margin-left:-1px;padding:0 12px;border:1px solid var(--line);background:#fff;color:var(--navy);font-size:.88rem}
.pm-tgroup button:first-child{margin-left:0}
.pm-tgroup button:hover{background:var(--bg-2)}
.pm-out{gap:14px}
.pm-big{display:flex;align-items:baseline;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--line-2)}
.pm-big span{font-size:.75rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.pm-big b{font-size:48px;line-height:1;color:var(--navy);font-variant-numeric:tabular-nums}
.pm-big em{font-style:normal;color:var(--muted)}
.pm-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.pm-row div{display:flex;flex-direction:column;gap:2px;min-width:0}
.pm-row span{font-size:.75rem;color:var(--muted)}
.pm-row b{color:var(--navy);font-variant-numeric:tabular-nums}
.pm-warn{display:flex;flex-direction:column;gap:6px;padding:10px 12px;border-left:3px solid #b07a2a;background:#fffaf2;font-size:.82rem;color:#6b4a14}
.pm-history ul{display:flex;flex-direction:column}
.pm-history li{display:grid;grid-template-columns:52px 72px minmax(0,1fr) auto;align-items:baseline;gap:8px;padding:8px 0;border-bottom:1px solid var(--line-2);font-size:.88rem}
.pm-history li b{color:var(--navy);font-variant-numeric:tabular-nums}
.pm-avg{display:flex;flex-direction:column;gap:2px}
.pm-avg b{font-size:26px;color:var(--navy);font-variant-numeric:tabular-nums}
.pm-avg .bad{color:#8a4b12;font-weight:700}
.pm-send{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.pm-send .btn{padding:0 12px}
.pm-saved,.pm-copied{color:var(--ok);font-weight:700}
#pm-text{width:100%;font:inherit;font-size:13px}
@media (max-width:900px){.pm-grid{grid-template-columns:minmax(0,1fr)}}
@media (max-width:600px){
 .pd-flow li{flex-direction:column;justify-content:flex-start;gap:6px;padding:10px 4px;font-size:.7rem;line-height:1.25;text-align:center}
 .pd-flow li span{width:24px;height:24px;font-size:.72rem}
 .pm-send{grid-template-columns:1fr}
 .pm-big b{font-size:40px}
}

/* How-to video beside the setup (phones: full width above the options, capped). */
.pd-lab .pd-howto{display:block}
@media (max-width:900px){.pd-lab .pd-prepare__visual.pd-howto{display:block;padding:0;max-width:360px;width:100%;justify-self:center}.pd-lab .pd-prepare__visual.pd-howto figcaption{padding:12px 14px 14px;border-top:1px solid var(--line)}}

/* No-card result and "Nhập PD có sẵn" ------------------------------------------------ */
.pd-quick,.pd-enter{display:grid;gap:12px;max-width:640px;margin:0 auto;padding:clamp(16px,3vw,32px) 0}
.pd-quick .pd-h,.pd-enter .pd-h{margin-bottom:6px}
.pd-quick__value{margin:6px 0 2px;font:700 clamp(1.9rem,6vw,3rem)/1.15 var(--sans);letter-spacing:-.02em;color:var(--navy);overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.pd-quick__value output{display:block}
.pd-nowrap{white-space:nowrap}
.pd-quick__mono{margin:0;font:600 clamp(1.05rem,3.2vw,1.3rem)/1.45 var(--sans);color:var(--navy);overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.pd-quick__note{font-size:1rem;line-height:1.6;color:var(--ink)}
.pd-quick .pd-actions,.pd-enter .pd-actions{margin-top:12px}
.pd-quick .pd-alt,.pd-enter .pd-alt{margin-top:2px}
.pd-enter__field{display:grid;gap:8px;max-width:320px}
.pd-enter__field label{font:700 .74rem/1.3 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--navy)}
.pd-enter__field input{box-sizing:border-box;width:100%;min-height:48px;padding:10px 14px;border:1px solid var(--line-2);border-radius:0;background:#fff;color:var(--ink);font:600 1.125rem/1.3 var(--sans);font-variant-numeric:tabular-nums}
.pd-enter__field input:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-color:var(--ink)}
.pd-enter__field input[aria-invalid="true"]{border-color:#b3261e}
.pd-enter__error{font-size:.92rem;line-height:1.5;color:#b3261e}