/* Niu Lai Explained — original static-site design */
:root{
  --bg:#f7f4ed; --surface:#fffdf8; --surface-2:#efebe2; --text:#172019;
  --muted:#657067; --line:#d9d5ca; --accent:#2d6a4f; --accent-2:#b9d5c5;
  --max:1160px; --prose:760px; --radius:18px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.68;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-underline-offset:3px} a:hover{text-decoration-thickness:2px}
img,svg{max-width:100%;height:auto} .wrap{width:min(calc(100% - 40px),var(--max));margin-inline:auto}.prose{max-width:var(--prose)}
.skip{position:absolute;left:-9999px;top:auto}.skip:focus{left:16px;top:12px;background:var(--text);color:white;padding:10px 14px;border-radius:10px;z-index:99}
.site-header{position:sticky;top:0;z-index:20;background:rgba(247,244,237,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.navbar{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;color:var(--text);font-weight:800;text-decoration:none;letter-spacing:-.02em}.brand svg{width:32px;height:32px}
.nav-links{display:flex;align-items:center;gap:19px;font-size:.93rem}.nav-links a{color:var(--text);text-decoration:none}.nav-links a:hover{color:var(--accent)}.menu-btn{display:none;border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:9px 11px;font:inherit;color:var(--text)}
.hero{padding:84px 0 68px}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:70px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:.82rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.eyebrow:before{content:"";width:28px;height:1px;background:var(--accent)}
h1{font-size:clamp(2.7rem,7vw,5.7rem);line-height:.98;letter-spacing:-.055em;margin:.22em 0 .27em;max-width:900px}.subhead{font-size:clamp(1.05rem,2vw,1.28rem);color:#465249;max-width:760px;margin:0 0 28px}
.actions{display:flex;flex-wrap:wrap;gap:12px}.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:12px 18px;font-weight:750;text-decoration:none;border:1px solid var(--text)}.btn.primary{background:var(--text);color:white}.btn.secondary{color:var(--text);background:transparent}
.hero-art{background:var(--text);border-radius:28px;min-height:360px;position:relative;overflow:hidden;color:white;padding:32px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 24px 80px rgba(23,32,25,.12)}
.hero-art .cn{font-size:clamp(5rem,12vw,9rem);font-weight:900;line-height:.8;letter-spacing:-.08em}.hero-art .ring{position:absolute;width:260px;height:260px;border:1px solid rgba(255,255,255,.17);border-radius:50%;right:-62px;top:36px}.hero-art .ring.r2{width:180px;height:180px;right:58px;top:102px}.art-note{color:#c9d8cf;font-size:.85rem;max-width:260px}
.section{padding:68px 0;border-top:1px solid var(--line)}.section h2{font-size:clamp(1.9rem,4vw,3rem);letter-spacing:-.04em;line-height:1.08;margin:0 0 18px}.section-intro{font-size:1.08rem;color:#465249;max-width:800px;margin:0 0 30px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}.card h3{margin:0 0 9px;font-size:1.12rem}.card p{margin:0;color:#4f5b52}.card a.stretched{text-decoration:none;color:var(--text)}
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.fact{padding:18px;border-top:2px solid var(--text);background:rgba(255,255,255,.28)}.fact .label{font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:800}.fact .value{font-size:1.08rem;font-weight:800;margin-top:5px}
.page-hero{padding:72px 0 44px}.page-hero h1{font-size:clamp(2.6rem,6vw,4.9rem);max-width:960px}.breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:22px}.breadcrumb a{color:inherit}
.article{display:grid;grid-template-columns:minmax(0,var(--prose)) 1fr;gap:60px;align-items:start}.article-main h2{font-size:2rem;line-height:1.15;letter-spacing:-.03em;margin:2.2em 0 .55em}.article-main h3{font-size:1.25rem;margin:1.7em 0 .45em}.article-main p,.article-main li{color:#354039}.article-main strong{color:var(--text)}.article-main ul{padding-left:1.2rem}.article-main .lead{font-size:1.16rem;color:#2b352f}.aside{position:sticky;top:98px}.toc{border:1px solid var(--line);border-radius:16px;padding:20px;background:var(--surface)}.toc strong{display:block;margin-bottom:8px}.toc a{display:block;color:#4a554d;text-decoration:none;padding:6px 0;font-size:.92rem}.toc a:hover{color:var(--accent)}
.callout{margin:28px 0;padding:22px 24px;border-left:4px solid var(--accent);background:#eef5f0;border-radius:0 14px 14px 0}.callout p{margin:0}.note{font-size:.9rem;color:var(--muted)}
.timeline{position:relative;margin:28px 0}.timeline:before{content:"";position:absolute;left:13px;top:5px;bottom:5px;width:1px;background:var(--line)}.event{position:relative;padding:0 0 32px 48px}.event:before{content:"";position:absolute;left:7px;top:6px;width:13px;height:13px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px var(--bg)}.event time{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:var(--accent)}.event h3{margin:3px 0 6px}.event p{margin:0}
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:28px 0}.flow-step{background:var(--text);color:white;border-radius:14px;padding:18px;min-height:124px;display:flex;flex-direction:column;justify-content:space-between}.flow-step small{color:#b7c8bd}.flow-step:not(:last-child):after{content:"→";position:relative;float:right;color:var(--accent)}
.source-list{display:grid;gap:12px;margin:24px 0}.source{border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:16px 18px}.source .publisher{font-size:.78rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);font-weight:800}.source a{font-weight:750}.source p{margin:5px 0 0;font-size:.9rem;color:#59645c}
.chars{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:26px 0}.char{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:26px}.hanzi{font-size:4rem;font-weight:900;line-height:1}.pinyin{font-size:1.25rem;color:var(--accent);font-weight:800;margin-top:10px}.tone{font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.footer{border-top:1px solid var(--line);padding:44px 0 30px;margin-top:64px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px}.footer h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em}.footer a{display:block;color:#465249;text-decoration:none;margin:7px 0}.footer .legal-note{font-size:.84rem;color:var(--muted);max-width:520px}.copyright{border-top:1px solid var(--line);margin-top:28px;padding-top:20px;font-size:.8rem;color:var(--muted);display:flex;justify-content:space-between;gap:20px}
.badge{display:inline-block;border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:5px 10px;font-size:.76rem;font-weight:800;color:#536056;margin:0 5px 5px 0}.simple-list{display:grid;gap:10px}.simple-list a{display:flex;justify-content:space-between;gap:20px;padding:16px 0;border-bottom:1px solid var(--line);font-weight:750;text-decoration:none;color:var(--text)}
@media(max-width:900px){.hero-grid,.article,.footer-grid{grid-template-columns:1fr}.hero-art{min-height:290px}.fact-grid{grid-template-columns:1fr 1fr}.grid{grid-template-columns:1fr 1fr}.aside{display:none}.flow{grid-template-columns:1fr 1fr}.nav-links{display:none;position:absolute;left:20px;right:20px;top:64px;flex-direction:column;align-items:stretch;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px;box-shadow:0 18px 50px rgba(23,32,25,.1)}.nav-links.open{display:flex}.menu-btn{display:block}}
@media(max-width:600px){.wrap{width:min(calc(100% - 28px),var(--max))}.hero{padding-top:52px}.grid,.fact-grid,.chars,.flow{grid-template-columns:1fr}.section{padding:52px 0}.hero-art{min-height:250px}.copyright{flex-direction:column}.navbar{height:64px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

/* Box-office history page */
.snapshot-card{margin:30px 0 8px;background:var(--text);color:#fff;border-radius:22px;padding:28px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px}.snapshot-card h2{color:#fff!important;font-size:clamp(2.6rem,7vw,4.8rem)!important;margin:.18em 0 .12em!important;letter-spacing:-.05em}.snapshot-card p{color:#d5e0d8;margin:0;max-width:560px}.snapshot-card .btn.primary{background:#fff;color:var(--text);border-color:#fff;white-space:nowrap}.metric-pill{display:inline-block;border:1px solid rgba(255,255,255,.25);border-radius:999px;padding:5px 10px;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:#d5e0d8}.boxoffice-timeline{display:grid;gap:14px;margin:26px 0}.bo-event{border:1px solid var(--line);background:var(--surface);border-radius:18px;padding:22px;display:grid;grid-template-columns:135px 130px 1fr;column-gap:18px;align-items:start}.bo-event time{font-size:.75rem;text-transform:uppercase;letter-spacing:.07em;color:var(--accent);font-weight:800;padding-top:8px}.bo-event .bo-number{font-size:1.6rem;line-height:1.05;font-weight:900;letter-spacing:-.035em;padding-top:5px}.bo-event h3{grid-column:3;margin:0 0 5px}.bo-event p{grid-column:3;margin:0 0 7px}.bo-event>a{grid-column:3;font-size:.9rem;font-weight:750}.data-table-wrap{width:100%;overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:16px;background:var(--surface)}.data-table{width:100%;border-collapse:collapse;min-width:740px}.data-table th,.data-table td{padding:14px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}.data-table th{font-size:.75rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);background:var(--surface-2)}.data-table tr:last-child td{border-bottom:0}.data-table td:nth-child(2){white-space:nowrap}.data-table a{font-weight:700}
@media(max-width:700px){.snapshot-card{align-items:flex-start;flex-direction:column}.bo-event{grid-template-columns:1fr 1fr}.bo-event h3,.bo-event p,.bo-event>a{grid-column:1/-1}.bo-event h3{margin-top:10px}}

/* Dark-surface text safeguards: article-level strong styling must not make emphasized text invisible on dark cards. */
.snapshot-card strong,
.flow-step strong{color:#fff}