/* ==========================================================
   加拿大落基山冬季摄影团 /phototour
   - 视觉：冰川夜色底 + 纸白文字 + 冰蓝 / 日照金两种光色，衬线标题、等宽参数字体
   - 首屏取景器 HUD（快门 / 光圈 / ISO / 直方图 / 对焦框 / 水平仪），光圈叶片转场
   - 配套脚本 frontend/apps/phototour（产物 public/static/phototour/）
   ========================================================== */

.pt-page {
    --pt-bg: #07090c;
    --pt-bg2: #0b0f14;
    --pt-panel: #0e1319;
    --pt-ink: #f1efe9;
    --pt-text: #b7bec6;
    --pt-mute: #78828d;
    --pt-line: rgba(241, 239, 233, .09);
    --pt-line2: rgba(241, 239, 233, .18);
    --pt-ice: #9fd6e6;
    --pt-gold: #e2b170;
    --pt-red: #e0523f;
    --pt-serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
    --pt-latin: 'Cormorant Garamond', 'Times New Roman', serif;
    --pt-mono-f: 'IBM Plex Mono', Consolas, monospace;
    --pt-ease: cubic-bezier(.2, .7, .2, 1);
    background: var(--pt-bg);
    color: var(--pt-text);
    font-size: 16px;
    line-height: 1.85;
    letter-spacing: .01em;
}
.pt-page h1, .pt-page h2, .pt-page h3 { color: var(--pt-ink); }
.pt-page a { color: var(--pt-ice); }
.pt-page a:hover { color: #fff; }
.pt-page ::selection { background: rgba(159, 214, 230, .35); color: #fff; }
.pt-mono { font-family: var(--pt-mono-f); letter-spacing: .08em; }
.pt-page .is-hidden { display: none !important; }

/* ---------- 按钮 ---------- */
.pt-btn {
    display: inline-flex; align-items: center; gap: .6rem;
    padding: .95rem 1.7rem;
    border: 1px solid transparent; border-radius: 2px;
    font-size: .95rem; letter-spacing: .08em; line-height: 1;
    text-decoration: none; cursor: pointer;
    transition: background .3s var(--pt-ease), color .3s var(--pt-ease), border-color .3s var(--pt-ease), transform .3s var(--pt-ease);
}
.pt-btn span { display: inline-block; transition: transform .3s var(--pt-ease); }
.pt-btn:hover { text-decoration: none; transform: translateY(-1px); }
.pt-btn:hover span { transform: translateX(4px); }
.pt-page .pt-btn--primary { background: var(--pt-ink); color: #0a0c0f; }
.pt-page .pt-btn--primary:hover { background: var(--pt-ice); color: #061017; }
.pt-page .pt-btn--ghost { border-color: rgba(241, 239, 233, .38); color: var(--pt-ink); }
.pt-page .pt-btn--ghost:hover { border-color: var(--pt-ice); color: var(--pt-ice); }
.pt-btn:disabled { opacity: .5; cursor: progress; transform: none; }

/* ==========================================================
   首屏
   ========================================================== */
.pt-hero {
    position: relative; isolation: isolate;
    min-height: 100vh; min-height: 100svh;
    display: flex; align-items: flex-end;
    overflow: hidden; background: #000;
}
.pt-hero__media, .pt-hero__media img, .pt-hero__iris, .pt-hero__shade, .pt-hero__grain { position: absolute; inset: 0; }
.pt-hero__media img {
    width: 100%; height: 100%; object-fit: cover;
    opacity: 0; transform: scale(1.06);
}
.pt-hero__media img.is-active { opacity: 1; animation: ptKen 16s linear both; }
@keyframes ptKen { from { transform: scale(1.09); } to { transform: scale(1); } }
.pt-hero__iris { z-index: 3; width: 100%; height: 100%; pointer-events: none; }
.pt-hero__shade {
    z-index: 1;
    background:
        linear-gradient(180deg, rgba(5, 7, 10, .62) 0%, rgba(5, 7, 10, 0) 24%),
        linear-gradient(0deg, rgba(5, 7, 10, .92) 0%, rgba(5, 7, 10, .55) 26%, rgba(5, 7, 10, 0) 52%),
        linear-gradient(90deg, rgba(5, 7, 10, .78) 0%, rgba(5, 7, 10, .35) 40%, rgba(5, 7, 10, 0) 66%);
}
.pt-hero__grain {
    z-index: 2; opacity: .09; mix-blend-mode: overlay; pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    animation: ptGrain .9s steps(4) infinite;
}
@keyframes ptGrain {
    0% { transform: translate(0, 0); } 25% { transform: translate(-3%, 2%); }
    50% { transform: translate(2%, -3%); } 75% { transform: translate(-2%, -1%); } 100% { transform: translate(0, 0); }
}

/* ---------- 取景器 HUD ---------- */
.pt-vf {
    position: absolute; z-index: 4; inset: 86px 28px 28px;
    pointer-events: none;
    color: rgba(241, 239, 233, .82);
    font-family: var(--pt-mono-f); font-size: 11.5px; letter-spacing: .14em;
}
.pt-vf__corner { position: absolute; width: 28px; height: 28px; border: 0 solid rgba(241, 239, 233, .7); }
.pt-vf__corner.is-tl { top: 0; left: 0; border-top-width: 1.5px; border-left-width: 1.5px; }
.pt-vf__corner.is-tr { top: 0; right: 0; border-top-width: 1.5px; border-right-width: 1.5px; }
.pt-vf__corner.is-bl { bottom: 0; left: 0; border-bottom-width: 1.5px; border-left-width: 1.5px; }
.pt-vf__corner.is-br { bottom: 0; right: 0; border-bottom-width: 1.5px; border-right-width: 1.5px; }
.pt-vf__thirds i { position: absolute; background: rgba(255, 255, 255, .07); }
.pt-vf__thirds i:nth-child(1), .pt-vf__thirds i:nth-child(2) { top: 0; bottom: 0; width: 1px; }
.pt-vf__thirds i:nth-child(1) { left: 33.333%; }
.pt-vf__thirds i:nth-child(2) { left: 66.666%; }
.pt-vf__thirds i:nth-child(3), .pt-vf__thirds i:nth-child(4) { left: 0; right: 0; height: 1px; }
.pt-vf__thirds i:nth-child(3) { top: 33.333%; }
.pt-vf__thirds i:nth-child(4) { top: 66.666%; }
.pt-vf__top {
    position: absolute; top: 12px; left: 44px; right: 44px;
    display: flex; align-items: center; gap: 1.4rem; white-space: nowrap;
}
.pt-vf__top b { font-weight: 500; color: inherit; }
.pt-vf__mode, .pt-vf__raw { border: 1px solid rgba(241, 239, 233, .6); padding: 1px 6px; line-height: 1.4; }
.pt-vf__raw { font-size: 10px; }
.pt-vf__sp { flex: 1; }
.pt-vf__frame b { color: var(--pt-ice); }
[data-hud].is-rolling { color: var(--pt-ice); }

.pt-vf__af {
    position: absolute; left: 0; top: 0; width: 76px; height: 52px;
    transform: translate3d(var(--afx, 60vw), var(--afy, 40vh), 0);
    margin: -26px 0 0 -38px;
    transition: width .25s var(--pt-ease), height .25s var(--pt-ease), margin .25s var(--pt-ease);
    will-change: transform;
}
.pt-vf__af::before, .pt-vf__af::after, .pt-vf__af i::before, .pt-vf__af i::after {
    content: ""; position: absolute; width: 12px; height: 12px; border: 0 solid rgba(241, 239, 233, .85);
    transition: border-color .2s ease;
}
.pt-vf__af::before { top: 0; left: 0; border-top-width: 1.5px; border-left-width: 1.5px; }
.pt-vf__af::after { top: 0; right: 0; border-top-width: 1.5px; border-right-width: 1.5px; }
.pt-vf__af i::before { bottom: 0; left: 0; border-bottom-width: 1.5px; border-left-width: 1.5px; }
.pt-vf__af i::after { bottom: 0; right: 0; border-bottom-width: 1.5px; border-right-width: 1.5px; }
.pt-vf__af span { position: absolute; left: 0; top: -20px; font-size: 10px; opacity: .7; }
.pt-vf__af.is-locked { width: 60px; height: 42px; margin: -21px 0 0 -30px; }
.pt-vf__af.is-locked::before, .pt-vf__af.is-locked::after,
.pt-vf__af.is-locked i::before, .pt-vf__af.is-locked i::after { border-color: var(--pt-ice); }
.pt-vf__af.is-locked span { color: var(--pt-ice); opacity: 1; }
.pt-vf__af.is-locked span::after { content: " ●"; }

.pt-vf__level { position: absolute; left: 50%; top: 50%; width: 220px; margin-left: -110px; text-align: center; opacity: .55; }
.pt-vf__level i {
    display: block; height: 1px; transform: rotate(var(--tilt, 0deg)); transition: transform .4s var(--pt-ease);
    background: linear-gradient(90deg, rgba(241, 239, 233, .8) 0 38%, transparent 38% 62%, rgba(241, 239, 233, .8) 62% 100%);
}
.pt-vf__level span { display: block; margin-top: 6px; font-size: 10px; }

.pt-vf__side { position: absolute; right: 16px; bottom: 112px; width: 212px; }
.pt-vf__histo {
    display: block; width: 212px; height: 76px;
    border: 1px solid rgba(241, 239, 233, .28);
    background: rgba(5, 7, 10, .42);
    -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.pt-vf__ev { display: flex; justify-content: space-between; margin-top: 8px; font-size: 10px; opacity: .8; }
.pt-vf__ev b { color: var(--pt-ice); position: relative; font-weight: 500; }
.pt-vf__ev b::before { content: ""; position: absolute; left: 50%; top: -7px; border: 4px solid transparent; border-top-color: var(--pt-ice); margin-left: -4px; }
.pt-vf__meta { display: flex; flex-direction: column; align-items: flex-end; margin-top: 10px; font-size: 10.5px; gap: 2px; }
.pt-vf__meta span:last-child { opacity: .7; }

/* ---------- 首屏文案 ---------- */
.pt-hero__inner { position: relative; z-index: 5; padding-top: 150px; padding-bottom: 150px; }
.pt-crumbs ol { display: flex; gap: .5rem; list-style: none; margin: 0 0 1.6rem; padding: 0; font-size: .82rem; color: var(--pt-mute); }
.pt-crumbs li + li::before { content: "/"; margin-right: .5rem; opacity: .6; }
.pt-crumbs a { color: var(--pt-text); }
.pt-kicker { font-family: var(--pt-mono-f); font-size: 11px; letter-spacing: .32em; color: var(--pt-ice); margin: 0 0 1.4rem; }
.pt-hero__title { margin: 0 0 1.6rem; font-weight: 400; }
.pt-hero__poem {
    display: block;
    font-family: var(--pt-serif); font-weight: 600;
    font-size: clamp(3rem, 8vw, 7rem); line-height: 1.02; letter-spacing: .06em;
    color: var(--pt-ink);
    text-shadow: 0 2px 40px rgba(0, 0, 0, .35);
}
.pt-hero__h1 {
    display: flex; align-items: center; gap: 1rem;
    margin-top: 1.1rem;
    font-size: clamp(1rem, 1.7vw, 1.3rem); font-weight: 500; letter-spacing: .14em;
    color: rgba(241, 239, 233, .9);
}
.pt-hero__h1::before { content: ""; width: 48px; height: 1px; background: var(--pt-gold); flex: none; }
.pt-hero__lead { max-width: 37rem; font-size: 1.04rem; color: #d3d8dd; margin: 0 0 2rem; }
.pt-hero__lead b { color: var(--pt-ink); font-weight: 600; }
.pt-hero__stats {
    display: grid; grid-template-columns: repeat(4, auto); justify-content: start;
    list-style: none; margin: 0 0 2.2rem; padding: 1.1rem 0 0;
    border-top: 1px solid var(--pt-line2); max-width: 46rem;
}
.pt-hero__stats li { display: flex; flex-direction: column; padding: 0 2.2rem 0 0; margin-right: 2.2rem; border-right: 1px solid var(--pt-line); line-height: 1.5; }
.pt-hero__stats li:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.pt-hero__stats span { font-family: var(--pt-mono-f); font-size: 10.5px; letter-spacing: .2em; color: var(--pt-mute); }
.pt-hero__stats b { font-family: var(--pt-serif); font-size: 1.32rem; font-weight: 600; color: var(--pt-ink); margin: .2rem 0 .05rem; }
.pt-hero__stats small { font-size: .78rem; color: var(--pt-text); }
.pt-hero__actions { display: flex; flex-wrap: wrap; gap: .9rem; }

/* ---------- 胶片条 ---------- */
.pt-strip { position: absolute; z-index: 6; right: 44px; bottom: 44px; display: flex; gap: 8px; }
.pt-strip__frame {
    position: relative; width: 88px; height: 60px; padding: 0;
    border: 1px solid rgba(241, 239, 233, .22); background: #000; overflow: hidden; cursor: pointer;
    opacity: .62; transition: opacity .3s ease, border-color .3s ease, transform .3s var(--pt-ease);
}
.pt-strip__frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.pt-strip__frame:hover { opacity: 1; transform: translateY(-3px); }
.pt-strip__frame.is-active { opacity: 1; border-color: var(--pt-ice); }
.pt-strip__frame:focus-visible { outline: 2px solid var(--pt-ice); outline-offset: 2px; }
.pt-strip__no { position: absolute; left: 4px; top: 2px; font-family: var(--pt-mono-f); font-size: 9px; color: var(--pt-gold); letter-spacing: .1em; text-shadow: 0 1px 2px #000; }
.pt-strip__bar { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--pt-ice); transform: scaleX(0); transform-origin: left; }
.pt-strip__frame.is-active .pt-strip__bar { animation: ptBar var(--dur, 6.5s) linear both; }
.pt-hero.is-paused .pt-strip__frame.is-active .pt-strip__bar { animation-play-state: paused; }
@keyframes ptBar { to { transform: scaleX(1); } }

/* ==========================================================
   通用分区
   ========================================================== */
.pt-sec { position: relative; padding: clamp(4.5rem, 9vw, 8rem) 0; border-top: 1px solid var(--pt-line); }
.pt-head { max-width: 48rem; margin: 0 0 3.2rem; }
.pt-eyebrow {
    display: flex; align-items: center; gap: .9rem;
    font-family: var(--pt-mono-f); font-size: 11px; letter-spacing: .3em; color: var(--pt-ice);
    margin: 0 0 1.1rem;
}
.pt-eyebrow::before { content: ""; width: 32px; height: 1px; background: currentColor; }
.pt-page h2 { font-family: var(--pt-serif); font-weight: 600; font-size: clamp(1.9rem, 3.6vw, 3rem); line-height: 1.25; letter-spacing: .04em; margin: 0 0 1.1rem; }
.pt-head p { margin: 0; }
.pt-head__en { font-family: var(--pt-latin); font-style: italic; font-size: 1.35rem; color: var(--pt-mute); }

/* ---------- 要点速览 ---------- */
.pt-glance { background: var(--pt-bg2); }
.pt-glance__wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2.5rem, 6vw, 6rem); align-items: start; }
.pt-summary p { font-size: 1.04rem; line-height: 2; margin: 0 0 1rem; }
.pt-facts { margin: 0; border-top: 1px solid var(--pt-line2); }
.pt-facts > div { display: grid; grid-template-columns: 7.5rem 1fr; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--pt-line); transition: background .3s ease; }
.pt-facts > div:hover { background: rgba(159, 214, 230, .03); }
.pt-facts dt { font-weight: 500; color: var(--pt-mute); display: flex; gap: .7rem; align-items: baseline; }
.pt-facts dt span { font-family: var(--pt-mono-f); font-size: 10px; color: var(--pt-gold); letter-spacing: .1em; }
.pt-facts dd { margin: 0; color: var(--pt-ink); }

/* ---------- 导师 ---------- */
.pt-mentor { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; margin-bottom: clamp(4rem, 8vw, 6.5rem); }
.pt-mentor:last-child { margin-bottom: 0; }
.pt-mentor:not(.is-lead) { grid-template-columns: 7fr 4fr; }
.pt-mentor:not(.is-lead) .pt-mentor__work { order: 2; }
.pt-mentor__work { margin: 0; }
.pt-mentor__work a { display: block; overflow: hidden; background: #000; }
.pt-mentor__work img { width: 100%; height: auto; display: block; transition: transform 1.2s var(--pt-ease), opacity .4s ease; }
.pt-mentor__work a:hover img { transform: scale(1.03); }
.pt-mentor__work figcaption, .pt-day__photo figcaption {
    display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
    padding-top: .7rem; font-size: .82rem; color: var(--pt-mute);
}
.pt-mentor__work figcaption .pt-mono, .pt-day__photo figcaption .pt-mono { font-size: 10.5px; color: var(--pt-gold); }
.pt-mentor__no { font-size: 11px; color: var(--pt-gold); letter-spacing: .3em; margin: 0 0 .8rem; }
.pt-mentor h3 { font-family: var(--pt-serif); font-weight: 600; font-size: clamp(2.2rem, 4vw, 3.2rem); line-height: 1.1; letter-spacing: .08em; margin: 0 0 .5rem; }
.pt-mentor h3 em { font-family: var(--pt-latin); font-weight: 500; font-size: .52em; letter-spacing: .02em; color: var(--pt-mute); margin-left: .4rem; }
.pt-mentor__role { color: var(--pt-ice); letter-spacing: .12em; font-size: .92rem; margin: 0 0 1.4rem; }
.pt-mentor__body > p:not(.pt-mentor__no):not(.pt-mentor__role) { margin: 0 0 1rem; }
.pt-honors { list-style: none; padding: 0; margin: 1.8rem 0 0; display: grid; grid-template-columns: 1fr 1fr; column-gap: 2rem; }
.pt-honors li { display: flex; flex-direction: column; padding: .85rem 0; border-top: 1px solid var(--pt-line); line-height: 1.5; }
.pt-honors span { font-size: .8rem; color: var(--pt-mute); }
.pt-honors b { font-family: var(--pt-serif); font-weight: 600; font-size: 1.08rem; color: var(--pt-ink); }

/* ---------- 拍法 ---------- */
.pt-techs { background: var(--pt-bg2); }
.pt-techs__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3rem 2rem; }
.pt-tech__shot { position: relative; display: block; aspect-ratio: 4 / 3; overflow: hidden; background: #000; }
.pt-tech__shot img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--pt-ease); }
.pt-tech__shot:hover img { transform: scale(1.05); }
.pt-lcd {
    position: absolute; left: 0; right: 0; bottom: 0;
    display: flex; justify-content: space-between; gap: .4rem;
    padding: .55rem .8rem; font-family: var(--pt-mono-f); font-size: 11px; letter-spacing: .08em;
    color: #fff; background: linear-gradient(0deg, rgba(0, 0, 0, .75), rgba(0, 0, 0, 0));
    transform: translateY(100%); transition: transform .45s var(--pt-ease);
}
.pt-lcd i { font-style: normal; }
.pt-lcd i:first-child { color: var(--pt-gold); }
.pt-tech__shot:hover .pt-lcd, .pt-tech__shot:focus-visible .pt-lcd { transform: none; }
.pt-tech__no { font-size: 10.5px; color: var(--pt-gold); letter-spacing: .24em; margin: 1.2rem 0 .4rem; }
.pt-tech h3 { font-family: var(--pt-serif); font-weight: 600; font-size: 1.32rem; margin: 0 0 .5rem; }
.pt-tech p { margin: 0 0 .6rem; }
.pt-tech__exif { font-size: 10.5px; color: var(--pt-mute); }

/* ---------- 行程 + 路线图 ---------- */
.pt-trip__wrap { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.pt-map { position: sticky; top: 92px; }
.pt-map__inner { border: 1px solid var(--pt-line2); background: radial-gradient(120% 90% at 30% 30%, #101821 0%, #080b0f 70%); padding: 1rem 1rem .8rem; }
.pt-map__head { display: flex; justify-content: space-between; font-size: 10.5px; color: var(--pt-mute); letter-spacing: .2em; margin-bottom: .4rem; }
.pt-map__head span:last-child { color: var(--pt-ice); }
.pt-map__svg { display: block; width: 100%; height: auto; max-height: calc(100vh - 220px); }
.pt-map__grid { stroke: rgba(241, 239, 233, .07); stroke-width: 1.5; stroke-dasharray: 4 10; }
.pt-map__gridtx { fill: rgba(241, 239, 233, .3); font: 20px var(--pt-mono-f); letter-spacing: 2px; }
.pt-map__divide { fill: none; stroke: var(--pt-gold); stroke-opacity: .45; stroke-width: 2.5; stroke-dasharray: 2 12; stroke-linecap: round; }
.pt-map__zone { fill: rgba(241, 239, 233, .16); font: 600 22px var(--pt-mono-f); letter-spacing: 7px; }
.pt-map__zone.is-park { fill: rgba(159, 214, 230, .22); font-size: 20px; }
.pt-map__leg {
    fill: none; stroke: rgba(241, 239, 233, .2); stroke-width: 5; stroke-linecap: round; stroke-linejoin: round;
    transition: stroke .6s ease, stroke-width .6s ease;
}
.pt-map__leg.is-done { stroke: rgba(159, 214, 230, .5); }
.pt-map__leg.is-active { stroke: var(--pt-ice); stroke-width: 7; filter: drop-shadow(0 0 10px rgba(159, 214, 230, .8)); }
.pt-map__dot { fill: #0b0f14; stroke: var(--pt-ink); stroke-width: 3; transition: fill .4s ease, stroke .4s ease; }
.pt-map__halo { opacity: 0; transform-box: fill-box; transform-origin: center; transition: opacity .4s ease; }
.pt-map__label { fill: rgba(241, 239, 233, .62); font: 500 28px var(--pt-serif); letter-spacing: 2px; transition: fill .4s ease; }
.pt-map__pin.is-l .pt-map__label { text-anchor: end; }
.pt-map__pin.is-b .pt-map__label { text-anchor: middle; }
.pt-map__pin.is-b .pt-map__label { transform: translate(-12px, 0); }
.pt-map__pin.is-active .pt-map__dot { fill: var(--pt-ice); stroke: #fff; }
.pt-map__pin.is-active .pt-map__halo { opacity: 1; animation: ptPulse 2.2s ease-in-out infinite; }
.pt-map__pin.is-active .pt-map__label { fill: var(--pt-ink); }
@keyframes ptPulse { 0%, 100% { transform: scale(.7); } 50% { transform: scale(1.25); } }
.pt-map__note { font-size: .76rem; color: var(--pt-mute); margin: .5rem 0 0; line-height: 1.6; }

.pt-days { list-style: none; margin: 0; padding: 0; counter-reset: none; }
.pt-day { position: relative; padding: 0 0 3.4rem 1.6rem; border-left: 1px solid var(--pt-line); }
.pt-day::before { content: ""; position: absolute; left: -4px; top: 1.7rem; width: 7px; height: 7px; border-radius: 50%; background: var(--pt-bg); border: 1px solid var(--pt-line2); transition: background .4s ease, border-color .4s ease, box-shadow .4s ease; }
.pt-day.is-current::before { background: var(--pt-ice); border-color: var(--pt-ice); box-shadow: 0 0 14px rgba(159, 214, 230, .9); }
.pt-day:last-child { padding-bottom: 0; }
.pt-day__head { display: flex; gap: 1.2rem; align-items: flex-end; margin-bottom: 1rem; }
.pt-day__no {
    font-family: var(--pt-latin); font-weight: 500; font-size: 5rem; line-height: .8;
    color: transparent; -webkit-text-stroke: 1px rgba(241, 239, 233, .32);
    transition: -webkit-text-stroke-color .5s ease, color .5s ease;
}
.pt-day.is-current .pt-day__no { -webkit-text-stroke-color: var(--pt-ice); color: rgba(159, 214, 230, .08); }
.pt-day__date { font-size: 10.5px; color: var(--pt-gold); letter-spacing: .2em; margin: 0 0 .3rem; }
.pt-day h3 { font-family: var(--pt-serif); font-weight: 600; font-size: clamp(1.25rem, 2vw, 1.55rem); line-height: 1.4; margin: 0; }
.pt-day__plan { list-style: none; padding: 0; margin: 0 0 1rem; }
.pt-day__plan li { position: relative; padding-left: 1.3rem; margin-bottom: .45rem; }
.pt-day__plan li::before { content: ""; position: absolute; left: 0; top: .95em; width: .7rem; height: 1px; background: var(--pt-mute); }
.pt-day__tip { margin: 0 0 1rem; padding: .8rem 1rem; border-left: 2px solid var(--pt-gold); background: rgba(226, 177, 112, .06); font-size: .94rem; }
.pt-day__tip b { display: block; font-family: var(--pt-mono-f); font-size: 10.5px; font-weight: 500; letter-spacing: .24em; color: var(--pt-gold); margin-bottom: .2rem; }
.pt-day__meta { display: flex; flex-wrap: wrap; gap: .4rem 1.8rem; margin: 0 0 1.1rem; font-size: .88rem; }
.pt-day__meta > div { display: flex; gap: .6rem; }
.pt-day__meta dt { font-weight: 400; color: var(--pt-mute); }
.pt-day__meta dd { margin: 0; color: var(--pt-ink); }

/* 光线时间轴：06:00 – 19:00 */
.pt-light { margin: 0 0 1.3rem; }
.pt-light__bar {
    position: relative; height: 6px; border-radius: 3px;
    background: linear-gradient(90deg,
        #0c1420 0%, #1b3150 calc(var(--rise) - 7%), #6f86a8 calc(var(--rise) - 2%), var(--pt-gold) var(--rise),
        #efe6d2 calc(var(--rise) + 10%), #efe6d2 calc(var(--set) - 10%),
        var(--pt-gold) var(--set), #6f86a8 calc(var(--set) + 2%), #1b3150 calc(var(--set) + 7%), #0c1420 100%);
    opacity: .85;
}
.pt-light__sun {
    position: absolute; top: 50%; left: var(--rise); width: 12px; height: 12px; margin: -6px 0 0 -6px; border-radius: 50%;
    background: #fff4dc; box-shadow: 0 0 0 3px rgba(226, 177, 112, .35), 0 0 16px rgba(226, 177, 112, .9);
}
.pt-day.is-current .pt-light__sun { animation: ptSun 4s var(--pt-ease) both; }
@keyframes ptSun { from { left: var(--rise); } to { left: var(--set); } }
.pt-light__marks { position: relative; height: 1.4rem; margin-top: .35rem; font-size: 10px; color: var(--pt-mute); letter-spacing: .06em; }
.pt-light__marks span { position: absolute; top: 0; white-space: nowrap; transform: translateX(-50%); }
.pt-light__marks span:first-child { left: 0; transform: none; }
.pt-light__marks span:last-child { right: 0; transform: none; }
.pt-light__marks span:nth-child(2), .pt-light__marks span:nth-child(3) { color: var(--pt-gold); }
.pt-day__photo { margin: 0; max-width: 34rem; }
.pt-day__photo a { display: block; overflow: hidden; background: #000; }
.pt-day__photo img { width: 100%; height: auto; display: block; transition: transform 1.2s var(--pt-ease); }
.pt-day__photo.is-port { max-width: 20rem; }
.pt-day__photo a:hover img { transform: scale(1.03); }

/* ---------- 作品 ---------- */
.pt-works { background: #050608; }
.pt-edge {
    display: flex; justify-content: space-between; gap: 1rem;
    padding: 1.1rem 0 .5rem; font-size: 10px; letter-spacing: .34em; color: rgba(226, 177, 112, .7);
    background: repeating-linear-gradient(90deg, rgba(241, 239, 233, .13) 0 10px, transparent 10px 22px) top / 100% 5px no-repeat;
}
.pt-works__grid { columns: 3 300px; column-gap: 12px; }
.pt-work { position: relative; margin: 0 0 12px; break-inside: avoid; }
.pt-work a { position: relative; display: block; overflow: hidden; background: #000; }
.pt-work img { width: 100%; height: auto; display: block; transition: transform 1.2s var(--pt-ease), filter .6s ease; }
.pt-work__info {
    position: absolute; inset: auto 0 0 0; display: flex; flex-direction: column; gap: .2rem;
    padding: 2.4rem 1rem .9rem; color: #fff; line-height: 1.5;
    background: linear-gradient(0deg, rgba(0, 0, 0, .82), rgba(0, 0, 0, 0));
    opacity: 0; transform: translateY(10px); transition: opacity .45s ease, transform .45s var(--pt-ease);
}
.pt-work__info b { font-family: var(--pt-serif); font-weight: 600; font-size: 1rem; color: #fff; }
.pt-work__info .pt-mono { font-size: 10px; color: var(--pt-gold); }
.pt-work__no { position: absolute; top: .6rem; left: .7rem; font-size: 10px; color: rgba(255, 255, 255, .7); letter-spacing: .14em; text-shadow: 0 1px 3px #000; opacity: 0; transition: opacity .4s ease; }
.pt-work a:hover img { transform: scale(1.04); }
.pt-work a:hover .pt-work__info, .pt-work a:focus-visible .pt-work__info { opacity: 1; transform: none; }
.pt-work a:hover .pt-work__no { opacity: 1; }
.pt-works__grid:hover .pt-work img { filter: brightness(.72) saturate(.9); }
.pt-works__grid:hover .pt-work a:hover img { filter: none; }
.pt-works__copy { margin: 1.6rem 0 0; font-size: .8rem; color: var(--pt-mute); }

/* ---------- 费用 ---------- */
.pt-cost__grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 2rem; align-items: start; }
.pt-price { border: 1px solid var(--pt-line2); padding: 2rem; background: var(--pt-panel); }
.pt-price .pt-mono { font-size: 10.5px; letter-spacing: .3em; color: var(--pt-mute); margin: 0; }
.pt-price__num { font-family: var(--pt-latin); font-weight: 600; font-size: clamp(2.8rem, 4.6vw, 3.8rem); line-height: 1.05; color: var(--pt-ink); margin: .5rem 0 .3rem; }
.pt-price__note { font-size: .88rem; margin: 0 0 1.4rem; }
.pt-seats { display: flex; gap: 5px; margin-bottom: .6rem; }
.pt-seats i { flex: 1; height: 26px; border: 1px solid rgba(159, 214, 230, .45); background: rgba(159, 214, 230, .06); }
.pt-seats i.is-taken { border-color: var(--pt-gold); background: var(--pt-gold); }
.pt-price .pt-price__left { font-size: 10.5px; color: var(--pt-ice); margin: 0 0 1.6rem; letter-spacing: .2em; }
.pt-list h3 { font-family: var(--pt-serif); font-weight: 600; font-size: 1.2rem; margin: 0 0 1rem; }
.pt-list ul { list-style: none; padding: 0; margin: 0; }
.pt-list li { position: relative; padding: .7rem 0 .7rem 1.8rem; border-top: 1px solid var(--pt-line); }
.pt-list li::before { position: absolute; left: 0; top: .7rem; font-family: var(--pt-mono-f); }
.pt-list .is-yes li::before { content: "✓"; color: var(--pt-ice); }
.pt-list .is-no li::before { content: "×"; color: var(--pt-mute); }
.pt-notice { margin-top: 2rem; padding: 1.2rem 1.3rem; border: 1px solid rgba(226, 177, 112, .35); background: rgba(226, 177, 112, .05); }
.pt-notice h3 { font-size: 1rem; color: var(--pt-gold); margin: 0 0 .5rem; font-family: var(--pt-serif); }
.pt-notice p { margin: 0; font-size: .9rem; }

/* ---------- 装备清单 ---------- */
.pt-gear { background: var(--pt-bg2); }
.pt-gear__count { display: inline-block; margin-left: .6rem; color: var(--pt-ice); font-size: .8rem; }
.pt-gear__grid { display: grid; grid-template-columns: 1.2fr 1.2fr .9fr; gap: 2.4rem; }
.pt-gear__col { margin: 0; padding: 0; border: 0; min-width: 0; }
.pt-gear__col legend { width: auto; display: flex; flex-direction: column; font-family: var(--pt-serif); font-weight: 600; font-size: 1.2rem; color: var(--pt-ink); margin: 0 0 .8rem; line-height: 1.5; }
.pt-gear__col legend .pt-mono { font-family: var(--pt-mono-f); font-weight: 400; font-size: 10px; letter-spacing: .3em; color: var(--pt-gold); }
.pt-check { display: flex; align-items: flex-start; gap: .8rem; padding: .55rem 0; margin: 0; border-top: 1px solid var(--pt-line); cursor: pointer; font-weight: 400; line-height: 1.6; }
.pt-check input, .pt-agree input, .pt-opt input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pt-check i, .pt-agree i { flex: none; position: relative; width: 16px; height: 16px; margin-top: .2rem; border: 1px solid var(--pt-line2); transition: background .25s ease, border-color .25s ease; }
.pt-check i::after, .pt-agree i::after { content: ""; position: absolute; left: 4px; top: 1px; width: 6px; height: 10px; border: solid #061017; border-width: 0 2px 2px 0; transform: rotate(45deg) scale(0); transition: transform .2s var(--pt-ease); }
.pt-check input:checked + i, .pt-agree input:checked + i { background: var(--pt-ice); border-color: var(--pt-ice); }
.pt-check input:checked + i::after, .pt-agree input:checked + i::after { transform: rotate(45deg) scale(1); }
.pt-check input:checked ~ span { color: var(--pt-mute); text-decoration: line-through; text-decoration-color: rgba(159, 214, 230, .5); }
.pt-check input:focus-visible + i, .pt-agree input:focus-visible + i { outline: 2px solid var(--pt-ice); outline-offset: 2px; }

/* ---------- 报名 ---------- */
.pt-signup__wrap { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(2rem, 6vw, 5.5rem); align-items: start; }
.pt-signup__intro { position: sticky; top: 100px; }
.pt-signup__facts { list-style: none; padding: 0; margin: 2rem 0; font-size: .86rem; }
.pt-signup__facts li { display: grid; grid-template-columns: 5rem 1fr; padding: .7rem 0; border-top: 1px solid var(--pt-line); color: var(--pt-ink); letter-spacing: .04em; }
.pt-signup__facts span { font-size: 10px; color: var(--pt-gold); letter-spacing: .26em; padding-top: .2rem; }
.pt-signup__also { font-size: .88rem; color: var(--pt-mute); }
.pt-form-card { border: 1px solid var(--pt-line2); background: var(--pt-panel); padding: clamp(1.4rem, 3.6vw, 2.6rem); }
.pt-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.pt-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 1.3rem 1.6rem; margin-bottom: 1.6rem; }
.pt-fields label { display: flex; flex-direction: column; gap: .35rem; margin: 0; font-size: .8rem; font-weight: 400; letter-spacing: .08em; color: var(--pt-mute); }
.pt-fields label.is-full { grid-column: 1 / -1; }
.pt-fields input, .pt-fields textarea {
    width: 100%; padding: .55rem 0; border: 0; border-bottom: 1px solid var(--pt-line2); border-radius: 0;
    background: transparent; color: var(--pt-ink); font-size: 1rem; letter-spacing: .02em;
    transition: border-color .3s ease;
}
.pt-fields textarea { resize: vertical; min-height: 4.6rem; }
.pt-fields input::placeholder, .pt-fields textarea::placeholder { color: rgba(241, 239, 233, .25); }
.pt-fields input:focus, .pt-fields textarea:focus { outline: 0; border-bottom-color: var(--pt-ice); }
.pt-group { border: 0; margin: 0 0 1.6rem; padding: 0; min-width: 0; }
.pt-group legend { width: auto; font-size: .8rem; letter-spacing: .08em; color: var(--pt-mute); margin: 0 0 .6rem; }
.pt-options { display: flex; flex-wrap: wrap; gap: .6rem; }
.pt-options.is-stack { flex-direction: column; }
.pt-opt { position: relative; margin: 0; cursor: pointer; font-weight: 400; }
.pt-opt span { display: block; padding: .6rem 1rem; border: 1px solid var(--pt-line2); font-size: .92rem; color: var(--pt-text); transition: border-color .25s ease, color .25s ease, background .25s ease; }
.pt-opt:hover span { border-color: rgba(159, 214, 230, .5); }
.pt-opt input:checked + span { border-color: var(--pt-ice); color: var(--pt-ink); background: rgba(159, 214, 230, .08); }
.pt-opt input:focus-visible + span { outline: 2px solid var(--pt-ice); outline-offset: 2px; }
.pt-agree { position: relative; display: flex; gap: .8rem; align-items: flex-start; margin: 0 0 1.6rem; cursor: pointer; font-weight: 400; font-size: .9rem; line-height: 1.7; }
.pt-submit { display: flex; flex-wrap: wrap; gap: 1rem 1.4rem; align-items: center; }
.pt-submit p { margin: 0; font-size: .8rem; color: var(--pt-mute); flex: 1; min-width: 14rem; }
.pt-shutter {
    position: relative; width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid currentColor; flex: none;
    background: conic-gradient(from 0deg, currentColor 0 10%, transparent 10% 20%, currentColor 20% 30%, transparent 30% 40%, currentColor 40% 50%, transparent 50% 60%, currentColor 60% 70%, transparent 70% 80%, currentColor 80% 90%, transparent 90% 100%);
    -webkit-mask: radial-gradient(circle, transparent 3px, #000 3.5px); mask: radial-gradient(circle, transparent 3px, #000 3.5px);
}
.pt-btn.is-busy .pt-shutter { animation: ptSpin .9s linear infinite; }
@keyframes ptSpin { to { transform: rotate(360deg); } }
.pt-error { min-height: 1.4rem; margin: 1rem 0 0; color: #ff9b8a; font-size: .9rem; }
.pt-done h3 { font-family: var(--pt-serif); font-size: 1.6rem; margin: 0 0 .8rem; }
.pt-done:focus { outline: 0; }
.pt-done b { color: var(--pt-ice); display: inline; font-size: 1rem; }

/* ---------- FAQ ---------- */
.pt-faq__list { max-width: 56rem; border-top: 1px solid var(--pt-line2); }
.pt-faq details { border-bottom: 1px solid var(--pt-line); }
.pt-faq summary {
    position: relative; list-style: none; cursor: pointer;
    padding: 1.3rem 3rem 1.3rem 0;
    font-family: var(--pt-serif); font-weight: 600; font-size: 1.12rem; color: var(--pt-ink);
}
.pt-faq summary::-webkit-details-marker { display: none; }
.pt-faq summary::after { content: "+"; position: absolute; right: .4rem; top: 1.1rem; font: 300 1.6rem/1 var(--pt-latin); color: var(--pt-ice); transition: transform .35s var(--pt-ease); }
.pt-faq details[open]:not(.is-closing) summary::after { transform: rotate(45deg); }
.pt-faq .book-faq__body { overflow: hidden; transition: height .35s var(--pt-ease); }
.pt-faq .book-faq__body p { margin: 0; padding: 0 3rem 1.4rem 0; }

/* ---------- 结尾 ---------- */
.pt-outro { position: relative; min-height: 72vh; display: flex; align-items: center; overflow: hidden; text-align: center; }
.pt-outro img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.pt-outro::before { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(0deg, rgba(5, 7, 10, .9), rgba(5, 7, 10, .35) 50%, rgba(5, 7, 10, .85)); }
.pt-outro__inner { position: relative; z-index: 2; }
.pt-outro .pt-mono { font-size: 11px; letter-spacing: .4em; color: var(--pt-ice); margin: 0 0 1.4rem; }
.pt-outro__line { font-family: var(--pt-serif); font-weight: 600; font-size: clamp(1.8rem, 4.6vw, 3.6rem); line-height: 1.35; letter-spacing: .08em; color: var(--pt-ink); margin: 0 0 2.2rem; text-shadow: 0 2px 30px rgba(0, 0, 0, .5); }

/* ---------- 测光表式滚动指示 ---------- */
.pt-meter { position: fixed; z-index: 20; right: 18px; top: 50%; width: 40px; height: 230px; margin-top: -115px; pointer-events: none; opacity: 0; transition: opacity .5s ease; }
.pt-meter.is-on { opacity: 1; }
.pt-meter__scale { position: absolute; right: 0; top: 0; bottom: 0; display: flex; flex-direction: column; justify-content: space-between; }
.pt-meter__scale i { display: block; width: 6px; height: 1px; margin-left: auto; background: rgba(241, 239, 233, .35); }
.pt-meter__scale i:nth-child(odd) { width: 10px; }
.pt-meter__scale i:nth-child(7) { width: 16px; background: var(--pt-ice); }
.pt-meter__needle { position: absolute; right: 18px; top: 0; width: 0; height: 0; margin-top: -5px; border: 5px solid transparent; border-right-color: var(--pt-gold); transform: translateY(var(--p, 0px)); transition: transform .25s linear; }
.pt-meter__label { position: absolute; right: 22px; top: 50%; transform: translateY(-50%) rotate(180deg); writing-mode: vertical-rl; font-size: 10px; letter-spacing: .3em; color: var(--pt-mute); white-space: nowrap; }

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width: 1199.98px) {
    .pt-meter { display: none; }
    .pt-hero__stats li { padding-right: 1.4rem; margin-right: 1.4rem; }
}
@media (max-width: 991.98px) {
    .pt-vf__side, .pt-vf__level { display: none; }
    .pt-vf__top { gap: .9rem; left: 36px; right: 36px; }
    .pt-vf__top [data-hud="camera"] { display: none; }
    .pt-glance__wrap, .pt-signup__wrap, .pt-trip__wrap { grid-template-columns: 1fr; }
    .pt-mentor, .pt-mentor:not(.is-lead) { grid-template-columns: 1fr; }
    .pt-mentor:not(.is-lead) .pt-mentor__work { order: 0; max-width: 28rem; }
    .pt-techs__grid { grid-template-columns: 1fr 1fr; }
    .pt-cost__grid { grid-template-columns: 1fr 1fr; }
    .pt-price { grid-column: 1 / -1; }
    .pt-gear__grid { grid-template-columns: 1fr 1fr; }
    .pt-map { position: relative; top: 0; }
    .pt-map__svg { max-height: none; }
    .pt-signup__intro { position: static; }
    .pt-hero__stats { grid-template-columns: repeat(2, auto); row-gap: 1rem; }
    .pt-hero__stats li:nth-child(2) { border-right: 0; }
}
@media (max-width: 767.98px) {
    .pt-page { font-size: 15px; }
    .pt-vf { inset: 74px 12px 12px; font-size: 10px; }
    .pt-vf__top { left: 14px; right: 14px; top: 8px; gap: .7rem; }
    .pt-vf__top [data-hud="focal"], .pt-vf__raw, .pt-vf__thirds, .pt-vf__af { display: none; }
    .pt-vf__corner { width: 18px; height: 18px; }
    .pt-hero__inner { padding-top: 120px; padding-bottom: 116px; }
    .pt-hero__lead { font-size: .96rem; }
    .pt-hero__stats li { padding-right: 1rem; margin-right: 1rem; }
    .pt-hero__stats b { font-size: 1.1rem; }
    .pt-strip { left: 16px; right: 16px; bottom: 24px; justify-content: flex-start; overflow-x: auto; scrollbar-width: none; }
    .pt-strip::-webkit-scrollbar { display: none; }
    .pt-strip__frame { flex: none; width: 64px; height: 44px; }
    .pt-techs__grid, .pt-cost__grid, .pt-gear__grid, .pt-fields, .pt-honors { grid-template-columns: 1fr; }
    .pt-works__grid { columns: 2; column-gap: 8px; }
    .pt-work { margin-bottom: 8px; }
    .pt-work__info { opacity: 1; transform: none; padding: 1.6rem .6rem .5rem; }
    .pt-work__info b { font-size: .85rem; }
    .pt-work__info .pt-mono { display: none; }
    .pt-lcd { transform: none; }
    .pt-day { padding-left: 1.1rem; }
    .pt-day__no { font-size: 3.6rem; }
    .pt-facts > div { grid-template-columns: 5.6rem 1fr; }
    .pt-faq summary { padding-right: 2.4rem; font-size: 1.02rem; }
    .pt-faq .book-faq__body p { padding-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
    .pt-hero__media img.is-active, .pt-hero__grain, .pt-map__pin.is-active .pt-map__halo, .pt-day.is-current .pt-light__sun { animation: none; }
    .pt-strip__frame.is-active .pt-strip__bar { animation: none; transform: scaleX(1); }
    .pt-work img, .pt-tech__shot img, .pt-mentor__work img, .pt-day__photo img { transition: none; }
}