:root{
  --shell-gutter:16px;
  /* 浅色档案风：这个站讲行业里程碑，纸质报告的调子比暗黑影视风更贴题，
     也和其余各站（清一色深底）一眼分得开。 */
  --void:#f7f4ee;--panel:#fffefb;--ink:#171310;--muted:#4f463e;--dim:#6b6259;
  --signal:#b83f0e;--amber:#8a520c;--steel:#3d4d5c;
  --line:rgba(23,19,16,.12);--line2:rgba(23,19,16,.22);
  --brand-1:#FFC53D;--brand-2:#F5901E;--max:1400px;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --num:"DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
/* 锚点跳转：吸顶头部会盖住区块顶部，必须给滚动容器留出头部那么高的内边距。
   值 = 实测头部高度 + 余量；改了头部高度这里要跟着改。 */
html{scroll-behavior:smooth;scroll-padding-top:92px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

*{box-sizing:border-box}
figure,h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
body{margin:0;min-width:320px;overflow-x:clip;background:var(--void);color:var(--ink);font-family:var(--sans);
  /* 纸纹：极细的横向刻度线 + 顶部一道暖光，不用径向光晕（那是其他站的做法）*/
  background-image:linear-gradient(180deg,rgba(184,63,14,.07),transparent 420px),
                   repeating-linear-gradient(0deg,rgba(23,19,16,.028) 0 1px,transparent 1px 4px)}
a{color:inherit}
.page-shell{width:min(100% - var(--shell-gutter)*2,var(--max));margin-inline:auto;padding:52px 0}

.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;
  gap:18px;height:64px;padding:0 var(--shell-gutter);background:rgba(247,244,238,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line2)}
.brand-lockup{display:flex;align-items:center;gap:9px;flex:0 0 auto}
.brand-mark{width:30px;height:30px;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:16px;font-weight:700;white-space:nowrap;
  color:var(--ink)}
.brand-en{font-size:8px;letter-spacing:.24em;color:var(--dim);white-space:nowrap}
.site-nav{display:flex;gap:14px;overflow-x:auto;scrollbar-width:none}
.site-nav::-webkit-scrollbar{display:none}
.site-nav a{font-size:12.5px;color:var(--muted);text-decoration:none;white-space:nowrap;padding:4px 0;border-bottom:1px solid transparent}
.site-nav a:hover{color:var(--ink);border-bottom-color:var(--signal)}

/* 首屏：左文案 + 行业数据带 */
.hero{width:min(100% - var(--shell-gutter)*2,var(--max));margin-inline:auto;padding:64px 0 52px}
.eyebrow{font-size:10px;letter-spacing:.28em;color:var(--signal);margin-bottom:18px}
.hero h1{font-size:clamp(38px,9vw,72px);line-height:1.06;letter-spacing:-.03em;font-weight:800}
.hero-lead{margin-top:20px;font-size:15px;line-height:2;color:var(--muted)}
.market-band{display:grid;grid-template-columns:minmax(0,1fr);gap:2px;margin-top:38px;
  border-top:2px solid var(--signal);background:var(--line)}
.mk-item{padding:18px 20px;background:var(--panel);min-width:0}
.mk-item b{display:block;font-family:var(--num);font-size:30px;font-weight:700;color:var(--ink);letter-spacing:.01em;
  padding-bottom:8px;border-bottom:2px solid var(--signal)}
.mk-item span{display:block;margin-top:9px;font-size:11.5px;line-height:1.6;color:var(--muted)}

.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;
  border-top:1px solid var(--line2);padding-top:20px;margin-bottom:20px}
.section-heading p{font-size:10px;letter-spacing:.26em;color:var(--signal);margin-bottom:12px}
.section-heading h2{font-size:clamp(24px,5.2vw,40px);line-height:1.22;letter-spacing:-.02em;font-weight:700}
.section-heading>span{font-size:9px;line-height:1.7;letter-spacing:.18em;text-align:right;color:var(--dim);flex:0 0 auto}
.section-note{font-size:13.5px;line-height:2;color:var(--muted);max-width:56em;margin-bottom:32px}
.tag-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.tag-row span{font-size:10px;line-height:1;padding:5px 8px;border-radius:3px;color:var(--amber);
  border:1px solid rgba(138,82,12,.34);background:rgba(184,63,14,.07)}


/* 制作路线 */
.pl-list{border-top:1px solid var(--line)}
.pl-row{display:grid;grid-template-columns:52px minmax(0,1fr);gap:16px;padding:22px 0;border-bottom:1px solid var(--line)}
.pl-no{font-family:var(--num);font-size:15px;font-weight:700;color:var(--signal);letter-spacing:.06em}
.pl-row h3{font-size:17px;line-height:1.35;margin-bottom:4px}
.pl-sub{font-size:11px;letter-spacing:.1em;color:var(--amber);margin-bottom:10px}
.pl-row p:last-child{font-size:13px;line-height:1.95;color:var(--muted);max-width:52em}

.intro-lead{font-size:14.5px;line-height:2.05;color:var(--muted);max-width:56em;margin-bottom:28px}
.genre-compare{display:grid;grid-template-columns:minmax(0,1fr);border-top:1px solid var(--line)}
.genre-compare>div{display:grid;grid-template-columns:minmax(0,7em) minmax(0,1fr);gap:16px;
  padding:15px 0;border-bottom:1px solid var(--line);align-items:baseline}
.genre-compare dt{font-size:14px;font-weight:600;color:var(--amber)}
.genre-compare dd{font-size:13px;line-height:1.9;color:var(--muted)}
.ency-sub{margin:36px 0 16px}
.ency-sub h3{font-size:17px;font-weight:600}
.ency-sub p{margin-top:8px;font-size:13px;line-height:1.9;color:var(--muted);max-width:52em}
.glossary-list{display:grid;grid-template-columns:minmax(0,1fr);border-top:1px solid var(--line)}
.glossary-list li{padding:15px 0;border-bottom:1px solid var(--line);min-width:0}
.glossary-list h4{font-size:14px;margin-bottom:5px}
.glossary-list p{font-size:12.5px;line-height:1.85;color:var(--muted)}

.faq-list,.lt-grid{display:grid;grid-template-columns:minmax(0,1fr);border-top:1px solid var(--line)}
.faq-item,.lt-item{padding:20px 0;border-bottom:1px solid var(--line);min-width:0}
.faq-item h3{font-size:15.5px;margin-bottom:9px}
.faq-item p{font-size:13px;line-height:2;color:var(--muted)}
.lt-item h3{font-size:13.5px;margin-bottom:5px}
.lt-item p{font-size:12px;line-height:1.85;color:var(--muted)}

.brand-about{display:grid;grid-template-columns:minmax(0,1fr);gap:30px;margin-bottom:36px}
.ba-tagline{color:var(--amber);font-size:19px;line-height:1.5;margin-bottom:16px}
.ba-body{color:var(--muted);font-size:14px;line-height:2.05;max-width:44em}
.ba-body+.ba-body{margin-top:13px}
.ba-queries{display:grid;grid-template-columns:minmax(0,1fr);border-top:1px solid var(--line)}
.ba-queries>div{padding:13px 2px;border-bottom:1px solid var(--line);min-width:0}
.ba-queries dt{font-size:14px;font-weight:600}
.ba-queries dd{margin-top:5px;font-size:12px;line-height:1.8;color:var(--muted)}
.about-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:28px}
.about-main p{font-size:13.5px;line-height:2.05;color:var(--muted)}
.about-main p+p{margin-top:13px}
.about-facts{display:grid;grid-template-columns:minmax(0,1fr);border-top:1px solid var(--line)}
.about-facts>div{display:grid;grid-template-columns:minmax(0,6em) minmax(0,1fr);gap:14px;
  padding:13px 0;border-bottom:1px solid var(--line);align-items:baseline}
.about-facts dt{font-size:12.5px;color:var(--signal)}
.about-facts dd{font-size:12.5px;line-height:1.75;color:var(--muted)}
.about-facts a{color:var(--amber);text-decoration:underline;text-underline-offset:3px}

.tg-float{position:fixed;right:16px;bottom:16px;z-index:60;display:inline-flex;align-items:center;gap:8px;
  padding:11px 16px;border-radius:999px;text-decoration:none;font-size:13.5px;font-weight:600;
  color:#fff;background:var(--signal);
  box-shadow:0 8px 24px rgba(184,63,14,.3);transition:transform .25s ease,box-shadow .25s ease}
.tg-float:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(184,63,14,.42)}
.tg-float svg{width:17px;height:17px;flex:0 0 auto}

.site-footer{border-top:1px solid var(--line2);margin-top:36px;background:rgba(255,254,251,.62)}
.footer-inner{display:grid;grid-template-columns:minmax(0,1fr);gap:30px;padding:48px 0 32px}
.footer-brand .brand-lockup{margin-bottom:12px}
.footer-brand strong{font-size:15px}
.footer-brand p{font-size:12.5px;line-height:1.9;color:var(--muted)}
.footer-desc{margin-top:9px;color:var(--dim)!important;font-size:12px!important}
.footer-heading{font-size:10px;letter-spacing:.2em;color:var(--signal);margin-bottom:12px}
.footer-nav li{margin-bottom:8px}
.footer-nav a{font-size:12.5px;color:var(--muted);text-decoration:none}
.footer-meta p{font-size:12px;line-height:1.9;color:var(--muted)}
.footer-bottom{padding:16px 0 30px;border-top:1px solid var(--line)}
.footer-bottom p{font-size:11.5px;color:var(--dim)}

@media (min-width:720px){
  :root{--shell-gutter:32px}
  .page-shell{padding:68px 0}
  .site-header{height:76px}
  .hero{padding:80px 0 64px}
  .market-band{grid-template-columns:repeat(3,minmax(0,1fr))}
  .genre-compare,.glossary-list,.lt-grid{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:36px}
  .ba-queries{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:24px}
  .about-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:40px}
  .footer-inner{grid-template-columns:minmax(0,1.4fr) minmax(0,.8fr) minmax(0,1.1fr);gap:40px}
}
@media (min-width:1120px){
  :root{--shell-gutter:56px}
  .page-shell{padding:80px 0}
  .hero{padding:96px 0 76px}
  .glossary-list{grid-template-columns:repeat(3,minmax(0,1fr))}
  .brand-about{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:52px;align-items:start}
  .faq-item{display:grid;grid-template-columns:minmax(0,18em) minmax(0,1fr);gap:0 40px;align-items:baseline}
  .faq-item h3{margin-bottom:0}
}
@media (max-width:719px){.tg-float span{display:none}.tg-float{padding:13px;right:14px;bottom:14px}}
@media (prefers-reduced-motion:reduce){.dj-card,.tg-float{transition:none}}

/* ── 里程碑轨：一条竖轴串八个节点，里程碑是标题、作品是证据 ────────── */
.ms-track{position:relative;padding-left:26px}
.ms-track::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,var(--signal),rgba(184,63,14,.16))}
.ms-node{position:relative;display:grid;grid-template-columns:minmax(0,1fr);gap:14px;
  padding:26px 0;border-bottom:1px solid var(--line)}
.ms-node:last-child{border-bottom:0}
.ms-mark{position:absolute;left:-26px;top:30px}
.ms-no{display:grid;place-items:center;width:16px;height:16px;border-radius:50%;
  font-family:var(--num);font-size:8px;font-weight:700;color:#fff;background:var(--signal);
  box-shadow:0 0 0 4px var(--void)}
.ms-claim h3{font-size:clamp(17px,3.4vw,23px);line-height:1.4;font-weight:700;letter-spacing:-.01em}
.ms-heat{margin-top:7px;font-family:var(--num);font-size:12px;color:var(--steel);letter-spacing:.02em}
.ms-cover{border-radius:6px;overflow:hidden;aspect-ratio:2/3;background:var(--panel);
  border:1px solid var(--line2);box-shadow:0 6px 20px rgba(23,19,16,.13);max-width:150px}
.ms-cover{position:relative}
.dj-photo{display:block;width:100%;height:100%;object-fit:cover}
.dj-poster{position:absolute;inset:0;width:100%;height:100%}
.dp-no{font-family:var(--num);font-size:15px;font-weight:700;fill:rgba(255,255,255,.92);letter-spacing:.08em}
.ms-work{min-width:0}
.ms-name{font-size:15.5px;font-weight:700;margin-bottom:8px}
.ms-work>p:last-child{font-size:13px;line-height:1.9;color:var(--muted);max-width:44em}
@media (min-width:720px){
  .ms-track{padding-left:34px}
  .ms-track::before{left:9px}
  .ms-mark{left:-34px;top:34px}
  .ms-no{width:20px;height:20px;font-size:9px}
  .ms-node{grid-template-columns:150px minmax(0,1fr);grid-template-areas:"claim claim" "cover work";
    gap:18px 22px;padding:32px 0}
  .ms-claim{grid-area:claim}.ms-cover{grid-area:cover}.ms-work{grid-area:work}
}
@media (min-width:1120px){
  .ms-node{grid-template-columns:150px minmax(0,1.05fr) minmax(0,1fr);
    grid-template-areas:"cover claim work";gap:0 34px;align-items:start;padding:36px 0}
  .ms-claim{padding-right:20px;border-right:1px solid var(--line)}
}


/* ── 首屏海报导轨：五张沿一条刻度线排开，不是叠放的封面墙 ─────────── */
.hero-rail{position:relative;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));
  gap:10px;margin-top:34px;padding-top:22px}
.hero-rail::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--line2)}
.hr-item{position:relative;min-width:0}
.hr-item::before{content:"";position:absolute;left:50%;top:-22px;width:1px;height:14px;background:var(--signal)}
.hr-cover{margin:0;border-radius:5px;overflow:hidden;aspect-ratio:2/3;background:var(--panel);
  border:1px solid var(--line2);box-shadow:0 8px 22px rgba(23,19,16,.16)}
.hr-cover img{width:100%;height:100%;object-fit:cover;display:block}
.hr-no{display:block;margin-top:9px;font-family:var(--num);font-size:11px;font-weight:700;
  color:var(--signal);letter-spacing:.08em}
.hr-name{margin-top:2px;font-size:11.5px;line-height:1.45;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
@media (max-width:719px){
  .hero-rail{grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;margin-top:26px}
  .hr-name{display:none}
  .hr-no{font-size:9.5px;margin-top:6px}
}