/* ============================================================
   TIANXIA.IO · 天下己任
   纸白 · 墨 · 中国红 · 金 —— 雅俗共赏
   ============================================================ */

:root{
  --paper:#FBFAF6;
  --paper-2:#FFFFFF;
  --paper-3:#F6F3EB;
  --ink:#1A1714;
  --ink-2:#463D34;
  --ink-3:#7C7165;
  --ink-4:#A79C8D;
  --red:#A8201F;
  --red-2:#8A1918;
  --red-soft:rgba(168,32,31,.07);
  --gold:#9C7B2E;
  --gold-2:#C9A227;
  --line:#E7DFD1;
  --line-2:#F0EBE0;
  --navy:#1E3247;
  --serif:'Noto Serif CJK SC','Source Han Serif SC','Songti SC','STSong','SimSun',serif;
  --sans:'Noto Sans CJK SC','Source Han Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --wrap:1180px;
  --topbar-h:74px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:15px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit}
::selection{background:var(--red);color:#fff}

.skip{position:absolute;left:-9999px;top:0;background:var(--red);color:#fff;padding:10px 16px;z-index:99}
.skip:focus{left:12px;top:12px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}
.narrow{max-width:820px}

/* ---------------- 顶栏 ---------------- */
.topbar{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,246,.88);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.topbar.scrolled{border-bottom-color:var(--line);box-shadow:0 12px 30px -28px rgba(26,23,20,.6)}
.tb-inner{
  max-width:var(--wrap);margin:0 auto;padding:0 32px;height:var(--topbar-h);
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:26px;
}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;min-width:0}
.brand-logo{height:56px;width:auto;display:block}

.menu{display:flex;justify-content:flex-end;gap:2px;align-items:center}

/* 门匾 */
.bian-band{padding:46px 0 8px;text-align:center}
.bian-img{
  width:min(760px,92vw);height:auto;border-radius:4px;
  box-shadow:0 26px 54px -24px rgba(96,12,12,.55),0 8px 20px -10px rgba(26,23,20,.35);
}
.menu a{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  padding:9px 14px;font-size:14.5px;color:var(--ink-2);text-decoration:none;
  border-radius:2px;letter-spacing:.05em;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.menu a:hover{color:var(--ink);background:var(--red-soft)}
.menu a.on{color:var(--red)}
.menu a.on::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:1.5px;background:var(--red);opacity:.85;
}
.cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 20px;font-size:13.5px;letter-spacing:.08em;
  background:var(--red);color:#fff;text-decoration:none;border-radius:2px;
  box-shadow:0 10px 22px -18px rgba(168,32,31,1);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.cta:hover{background:var(--red-2);transform:translateY(-1px)}

/* ---------------- Hero ---------------- */
.hero{position:relative;overflow:hidden;padding:clamp(52px,8vw,96px) 0 0}
.hero-bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(880px 520px at 80% 6%,rgba(168,32,31,.055),transparent 62%),
    radial-gradient(680px 420px at 6% 96%,rgba(30,50,71,.05),transparent 62%);
}
.hero-inner{
  position:relative;display:grid;grid-template-columns:minmax(0,1fr) 288px;
  gap:56px;align-items:end;
}
.hero-k{font-size:11.5px;letter-spacing:.2em;color:var(--ink-3)}
.hero-h{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(46px,6.6vw,84px);line-height:1.14;letter-spacing:.02em;
  margin:20px 0 0;
}
.hero-h .hx{color:var(--red);position:relative}
.hero-sub{
  font-family:var(--serif);font-size:clamp(17px,1.9vw,21px);
  color:var(--ink-2);letter-spacing:.06em;margin:22px 0 0;
}
.hero-p{margin:24px 0 0;font-size:15px;line-height:2.05;color:var(--ink-3);max-width:520px}
.hero-act{display:flex;gap:12px;margin-top:34px;flex-wrap:wrap}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;font-size:14.5px;letter-spacing:.04em;
  text-decoration:none;border:1px solid transparent;border-radius:2px;
  transition:all .22s var(--ease);
}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 14px 28px -22px rgba(168,32,31,1)}
.btn-primary:hover{background:var(--red-2);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--ink-2);background:var(--paper-2)}
.btn-ghost:hover{border-color:var(--gold);color:var(--ink)}

.hero-side{padding-bottom:6px}
.hero-side-lab{font-size:10.5px;letter-spacing:.22em;color:var(--ink-3);margin-bottom:16px}
.hero-svg{width:100%;height:auto;overflow:visible}
.hv-n{font:600 11px var(--sans);fill:var(--red);letter-spacing:.06em}
.hv-t{font:600 17px var(--serif);fill:var(--ink);letter-spacing:.04em}
.hv-d{font:400 10.5px var(--sans);fill:var(--ink-4);letter-spacing:.14em}
.hv-line{stroke:var(--line);stroke-width:1}
.hv-spine{stroke:var(--gold);stroke-width:1;stroke-dasharray:2 5;opacity:.55}

.chain-strip{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  margin-top:clamp(44px,6vw,68px);padding:18px 0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cs-item{display:inline-flex;align-items:baseline;gap:8px}
.cs-item b{font-family:var(--serif);font-size:15px;letter-spacing:.06em}
.cs-item i{font-style:normal;font-size:9.5px;letter-spacing:.2em;color:var(--ink-4)}
.cs-arrow{color:var(--gold);opacity:.65;font-size:13px}

/* ---------------- 区块 ---------------- */
.section{padding:clamp(60px,8vw,104px) 0}
.section.alt{background:linear-gradient(180deg,var(--paper-3),var(--paper));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:740px;margin-bottom:clamp(32px,4.6vw,54px)}
.sec-k{
  display:flex;align-items:center;gap:10px;
  font-size:11px;letter-spacing:.22em;color:var(--red);text-transform:uppercase;
}
.sec-k::before{content:"";width:24px;height:1px;background:var(--red);opacity:.5}
.sec-h{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(27px,3.3vw,40px);line-height:1.4;letter-spacing:.015em;
  margin:16px 0 0;
}
.sec-p{margin:16px 0 0;font-size:15px;line-height:2;color:var(--ink-3)}
.sec-more{margin-top:36px}

/* ---------------- 三栏 ---------------- */
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.trio-card{background:var(--paper-2);padding:32px 28px 30px;transition:background .25s var(--ease)}
.trio-card:hover{background:#FFFDF8}
.tc-n{font-family:var(--serif);font-size:12px;letter-spacing:.18em;color:var(--gold)}
.trio-card h3{font-family:var(--serif);font-size:20px;margin:14px 0 12px;letter-spacing:.04em}
.trio-card p{margin:0;font-size:14px;line-height:1.95;color:var(--ink-3)}

/* ---------------- 三层主体 ---------------- */
.layers{display:flex;flex-direction:column;gap:14px}
.layer{
  position:relative;display:grid;grid-template-columns:60px minmax(0,1fr) 236px;gap:26px;
  padding:30px 32px;background:var(--paper-2);border:1px solid var(--line);
  transition:box-shadow .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.layer:hover{border-color:#DCD2BE;box-shadow:0 24px 48px -42px rgba(26,23,20,.7);transform:translateY(-1px)}
.layer.is-current{border-left:3px solid var(--red)}
.layer-n{font-family:var(--serif);font-size:32px;line-height:1;color:#E0D6C3;letter-spacing:.02em}
.layer-en{font-size:10px;letter-spacing:.2em;color:var(--ink-4)}
.layer h3{
  font-family:var(--serif);font-size:21px;margin:9px 0 12px;letter-spacing:.04em;
  display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;
}
.layer-name{font-family:var(--sans);font-size:13px;font-weight:400;color:var(--ink-3);letter-spacing:.02em}
.layer p{margin:0;font-size:14px;line-height:1.95;color:var(--ink-3)}
.layer-meta{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.tag{font-size:11px;padding:4px 10px;border:1px solid var(--line);color:var(--ink-3);border-radius:2px;letter-spacing:.04em}
.layer-side{text-align:right;border-left:1px solid var(--line-2);padding-left:24px;display:flex;flex-direction:column;justify-content:center}
.layer-dom{font-family:var(--serif);font-size:17px;color:var(--red);text-decoration:none;letter-spacing:.03em;border-bottom:1px solid transparent;align-self:flex-end}
.layer-dom:hover{border-bottom-color:rgba(168,32,31,.4)}
.layer-role{font-size:11.5px;color:var(--ink-3);margin-top:10px;line-height:1.7}

/* ---------------- 品牌矩阵 ---------------- */
.brand-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(286px,1fr));
  gap:1px;background:var(--line);border:1px solid var(--line);
}
.brand-card{
  display:flex;flex-direction:column;background:var(--paper-2);
  padding:26px 24px 22px;text-decoration:none;color:inherit;
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
  min-height:238px;
}
.bc-name{font-family:var(--serif);font-size:23px;margin:16px 0 7px;letter-spacing:.05em;font-weight:700;color:var(--ink)}
.brand-card:hover{background:#FFFDF8;box-shadow:inset 0 0 0 1px rgba(156,123,46,.4);position:relative;z-index:1}
.bc-top{display:flex;justify-content:space-between;align-items:center;gap:10px}
.bc-line{font-size:11px;letter-spacing:.12em;color:var(--ink-4)}
.dot{display:inline-flex;align-items:center;gap:6px;font-size:10.5px;color:var(--ink-3);letter-spacing:.06em;white-space:nowrap}
.dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink-4)}
.dot.g::before{background:#2F7D5B}
.dot.y::before{background:#B8860B}
.dot.n::before{background:#B7AFA2}
.bc-name{font-family:var(--serif);font-size:23px;margin:16px 0 7px;letter-spacing:.05em;font-weight:700;color:var(--ink)}
.bc-domain{font-size:11px;letter-spacing:.13em;color:var(--gold)}
.bc-one{margin:14px 0 0;font-size:13.5px;line-height:1.85;color:var(--ink-2);flex:1}
.bc-entity{
  font-size:11px;color:var(--ink-4);margin-top:16px;padding-top:13px;
  border-top:1px dotted var(--line);letter-spacing:.03em;
}
.brand-card.is-plan{cursor:default;background:#FCFBF7}
.brand-card.is-plan .bc-name{color:var(--ink-2)}
/* 11 张卡补位：3 列时第 11 张占两列，不留空格 */
.brand-card:last-child:nth-child(3n+2){grid-column:span 2}

.legend{
  display:flex;gap:22px;flex-wrap:wrap;margin:18px 0 0;
  font-size:11.5px;color:var(--ink-3);
}
.legend span{display:inline-flex;align-items:center;gap:7px}

/* ---------------- 四段链路 ---------------- */
.chain{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line)}
.step{position:relative;padding:34px 24px 0 0}
.step::before{
  content:"";position:absolute;top:-4px;left:0;width:7px;height:7px;border-radius:50%;
  background:var(--red);box-shadow:0 0 0 3px rgba(168,32,31,.1);
}
.step-n{font-family:var(--serif);font-size:12px;color:var(--gold);letter-spacing:.2em}
.step-en{font-size:9.5px;letter-spacing:.24em;color:var(--ink-4);margin-top:12px}
.step h3{font-family:var(--serif);font-size:23px;margin:8px 0 6px;letter-spacing:.05em}
.step-who{font-size:11.5px;color:var(--red);letter-spacing:.04em}
.step p{margin:14px 0 0;font-size:13.5px;line-height:1.9;color:var(--ink-3)}

/* ---------------- 洞察 ---------------- */
.ins-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(296px,1fr));gap:20px}
.ins-card{
  display:flex;flex-direction:column;padding:28px 26px 24px;
  background:var(--paper-2);border:1px solid var(--line);text-decoration:none;color:inherit;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.ins-card:hover{transform:translateY(-2px);box-shadow:0 26px 50px -40px rgba(26,23,20,.75);border-color:#DCD2BE}
.ins-meta{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--ink-4);letter-spacing:.08em}
.ins-card h3{font-family:var(--serif);font-size:18px;line-height:1.6;margin:14px 0 10px;letter-spacing:.02em}
.ins-card p{
  margin:0;font-size:13px;line-height:1.85;color:var(--ink-3);flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.ins-more{margin-top:18px;font-size:12px;color:var(--red);letter-spacing:.04em}

/* ---------------- 结语（深色） ---------------- */
.closing{background:#171412;color:#F2EDE4;padding:clamp(60px,8vw,110px) 0;position:relative;overflow:hidden}
.closing::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 420px at 82% 10%,rgba(168,32,31,.22),transparent 64%);
}
.closing .wrap{position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.cl-quote{margin:0}
.cl-quote p{
  font-family:var(--serif);font-size:clamp(23px,2.9vw,33px);line-height:1.85;
  letter-spacing:.06em;margin:0;color:#F5EFE3;
}
.cl-quote cite{display:block;margin-top:22px;font-style:normal;font-size:11.5px;letter-spacing:.22em;color:rgba(242,237,228,.5)}
.closing .sec-k{color:var(--gold-2)}
.closing .sec-k::before{background:var(--gold-2)}
.cl-five{
  font-family:var(--serif);font-size:clamp(18px,2.1vw,23px);line-height:2;
  letter-spacing:.06em;color:#F5EFE3;margin:16px 0 0;
}
.cl-note{font-size:12px;color:rgba(242,237,228,.5);margin:14px 0 0;letter-spacing:.04em}
.cl-note a{color:var(--gold-2);text-decoration:none}
.closing .btn-ghost{border-color:rgba(242,237,228,.24);color:#F2EDE4;background:transparent}
.closing .btn-ghost:hover{border-color:var(--gold-2);color:#fff}
.closing .btn-primary{background:var(--red);box-shadow:none}
.closing .btn-primary:hover{background:#C02A28}

/* ---------------- 内页 ---------------- */
.phero{
  padding:clamp(44px,6.5vw,80px) 0 clamp(26px,3.6vw,42px);
  background:linear-gradient(180deg,var(--paper-3),var(--paper));
  border-bottom:1px solid var(--line);
}
.phero-k{font-size:11px;letter-spacing:.22em;color:var(--red);text-transform:uppercase}
.phero h1{
  font-family:var(--serif);font-weight:700;letter-spacing:.02em;
  font-size:clamp(32px,4.4vw,54px);line-height:1.32;margin:16px 0 0;
}
.phero-lead{max-width:700px;margin:18px 0 0;font-size:16px;line-height:1.95;color:var(--ink-3)}
.psection{padding:clamp(40px,5.5vw,68px) 0 clamp(54px,7vw,86px)}

.prose{max-width:820px}
.prose h2{
  font-family:var(--serif);font-size:clamp(22px,2.5vw,29px);line-height:1.5;
  letter-spacing:.03em;margin:56px 0 18px;font-weight:700;
}
.prose h2:first-child{margin-top:0}
.prose h3{font-family:var(--serif);font-size:18.5px;margin:34px 0 12px;letter-spacing:.03em}
.prose p{margin:14px 0;font-size:15px;line-height:2.05;color:var(--ink-2)}
.prose strong{color:var(--ink);font-weight:600}
.prose a{color:var(--red);text-decoration:none;border-bottom:1px solid rgba(168,32,31,.28);transition:border-color .2s}
.prose a:hover{border-bottom-color:var(--red)}
.prose ul,.prose ol{margin:16px 0 16px 22px;padding:0;font-size:15px;line-height:2;color:var(--ink-2)}
.prose li{margin:7px 0}
.prose li::marker{color:var(--gold)}
.prose blockquote{
  margin:28px 0;padding:18px 24px;border-left:2px solid var(--gold);
  background:var(--paper-2);color:var(--ink-3);font-size:14px;line-height:1.95;
}
.prose blockquote p{margin:6px 0;font-size:14px;color:var(--ink-3)}
.prose hr{border:none;border-top:1px solid var(--line);margin:44px 0}
.prose code{
  font-family:'Noto Sans Mono CJK SC',ui-monospace,monospace;font-size:.88em;
  background:rgba(156,123,46,.1);padding:2px 6px;border-radius:2px;color:#6E5320;
}

.table-wrap{overflow-x:auto;margin:26px 0;border:1px solid var(--line);background:var(--paper-2)}
.table-wrap table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:520px}
.table-wrap th{
  background:var(--paper-3);font-family:var(--serif);font-weight:700;text-align:left;
  padding:12px 15px;border-bottom:1px solid var(--line);color:var(--ink);white-space:nowrap;letter-spacing:.03em;
}
.table-wrap td{padding:12px 15px;border-bottom:1px solid var(--line-2);color:var(--ink-2);vertical-align:top;line-height:1.8}
.table-wrap tr:last-child td{border-bottom:none}
.table-wrap tbody tr:hover{background:#FFFDF8}

.quote-block{
  margin:38px 0;padding:30px 34px;background:var(--paper-2);
  border-left:3px solid var(--red);box-shadow:0 26px 56px -50px rgba(26,23,20,.8);
}
.quote-block p{font-family:var(--serif);font-size:23px;letter-spacing:.06em;color:var(--ink);margin:0}
.quote-block figcaption{margin-top:12px;font-size:13px;line-height:1.9;color:var(--ink-3)}

/* mermaid 图 */
.figure{margin:30px 0;padding:22px 14px;border:1px solid var(--line);background:var(--paper-2);overflow-x:auto}
.figure-body{min-width:0}
.figure svg{min-width:720px;max-width:100%;height:auto;margin:0 auto}
pre.mermaid{
  margin:0;font-family:var(--sans);font-size:12.5px;line-height:1.9;color:var(--ink-3);
  white-space:pre-wrap;text-align:left;
}
.figure svg{max-width:100%;height:auto;margin:0 auto}

/* ---------------- 合作卡 ---------------- */
.coop-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:30px 0}
.coop{position:relative;padding:30px 28px;background:var(--paper-2);border:1px solid var(--line);transition:.28s var(--ease)}
.coop:hover{border-color:#DCD2BE;box-shadow:0 24px 50px -44px rgba(26,23,20,.8)}
.coop-n{font-family:var(--serif);font-size:12px;letter-spacing:.2em;color:var(--gold)}
.coop h3{font-family:var(--serif);font-size:21px;margin:12px 0 6px;letter-spacing:.04em}
.coop-who{font-size:11.5px;color:var(--red);letter-spacing:.04em}
.coop p{margin:14px 0 0;font-size:13.5px;line-height:1.95;color:var(--ink-3)}
.coop ul{margin:14px 0 0 18px;padding:0;font-size:12.5px;color:var(--ink-3);line-height:1.9}
.coop li::marker{color:var(--gold)}

/* ---------------- 文章 ---------------- */
.article{padding:38px 0 clamp(56px,7vw,88px)}
.crumb{display:flex;gap:9px;flex-wrap:wrap;font-size:12px;color:var(--ink-4);margin-bottom:26px}
.crumb a{color:var(--ink-3);text-decoration:none;border-bottom:1px solid transparent}
.crumb a:hover{border-bottom-color:var(--line)}
.crumb em{font-style:normal;color:var(--ink-2)}
.art-k{font-size:11px;letter-spacing:.18em;color:var(--red)}
.article h1{
  font-family:var(--serif);font-weight:700;letter-spacing:.02em;
  font-size:clamp(28px,3.8vw,42px);line-height:1.42;margin:16px 0 0;
}
.art-lead{
  margin:20px 0 34px;padding-bottom:26px;border-bottom:1px solid var(--line);
  font-size:15.5px;line-height:1.95;color:var(--ink-3);
}
.art-foot{display:flex;gap:12px;flex-wrap:wrap;margin-top:56px;padding-top:30px;border-top:1px solid var(--line)}

/* ---------------- 页脚 ---------------- */
.foot{background:var(--paper-3);border-top:1px solid var(--line);padding-top:56px}
.foot-inner{
  max-width:var(--wrap);margin:0 auto;padding:0 32px;
  display:grid;grid-template-columns:1.35fr .75fr 1.5fr;gap:44px;
}
.fb-name{font-family:var(--serif);font-size:22px;letter-spacing:.1em;font-weight:700}
.fb-name span{font-family:var(--sans);font-size:10.5px;font-weight:400;letter-spacing:.2em;color:var(--ink-4);margin-left:10px}
.fb-slogan{font-family:var(--serif);font-size:14.5px;letter-spacing:.14em;color:var(--gold);margin:10px 0 0}
.fb-legal{margin:16px 0 0;font-size:12px;line-height:2;color:var(--ink-3)}
.fb-legal a{color:var(--ink-2);text-decoration:none;border-bottom:1px solid var(--line)}
.foot-col h4{font-size:10.5px;letter-spacing:.22em;color:var(--ink-4);font-weight:400;margin:0 0 14px}
.foot-col a{display:block;font-size:13px;color:var(--ink-2);text-decoration:none;padding:5px 0;transition:color .2s}
.foot-col a:hover{color:var(--red)}
.foot-brands{display:flex;flex-wrap:wrap;gap:4px 16px}
.foot-brands a,.foot-brands .off{display:inline-block;font-size:12.5px;color:var(--ink-2);text-decoration:none;padding:4px 0}
.foot-brands a:hover{color:var(--red)}
.foot-brands .off{color:var(--ink-4)}
.foot-bar{
  max-width:var(--wrap);margin:46px auto 0;padding:18px 32px 26px;
  border-top:1px solid var(--line);display:flex;justify-content:space-between;
  gap:10px;flex-wrap:wrap;font-size:11px;color:var(--ink-4);letter-spacing:.04em;
}

/* ---------------- 动效 ---------------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
@media print{
  .topbar,.foot,.hero-act,.sec-more,.art-foot{display:none!important}
  .reveal{opacity:1!important;transform:none!important}
  body{background:#fff}
  .section{padding:24px 0}
}

/* ---------------- 响应式 ---------------- */
@media (max-width:1180px){
  .menu a{padding:9px 11px;font-size:14px}
  .layer{grid-template-columns:52px minmax(0,1fr) 210px;gap:22px;padding:26px 26px}
}
@media (max-width:1024px){
  .brand-card:last-child:nth-child(3n+2){grid-column:auto}
  .brand-card:last-child:nth-child(2n+1){grid-column:1/-1}
  .hero-inner{grid-template-columns:minmax(0,1fr) 240px;gap:36px}
  .chain{grid-template-columns:1fr 1fr;gap:30px 24px;border-top:none;padding-top:6px}
  .step{padding:24px 0 0}
  .step::before{display:none}
  .step{border-top:1px solid var(--line)}
}

/* 手机：顶栏两行（上行品牌＋主按钮，下行菜单自动换行） */
@media (max-width:900px){
  :root{--topbar-h:auto}
  .tb-inner{
    display:flex;flex-wrap:wrap;align-items:center;
    padding:11px 20px 9px;gap:8px 10px;height:auto;
  }
  .brand{order:1;flex:1 1 auto;gap:9px}
  .brand-logo{height:44px}
  .cta{order:2;padding:8px 15px;font-size:12.5px;letter-spacing:.06em}
  .menu{
    order:3;flex:1 1 100%;justify-content:flex-start;flex-wrap:wrap;gap:6px;
    padding:2px 0 2px;
  }
  .menu a{
    padding:6px 11px;font-size:13px;background:rgba(26,23,20,.035);
    border-radius:2px;letter-spacing:.06em;
  }
  .menu a.on{background:var(--red-soft);color:var(--red)}
  .menu a.on::after{display:none}

  .hero{padding-top:40px}
  .hero-inner{grid-template-columns:1fr}
  .hero-side{display:none}
  .hero-p{max-width:none}
  .chain-strip{gap:10px 14px;margin-top:36px}
  .section{padding:56px 0}
  .trio{grid-template-columns:1fr}
  .trio-card{padding:26px 22px}
  .layer{grid-template-columns:1fr;gap:0;padding:26px 22px}
  .layer-n{position:absolute;top:20px;right:22px;font-size:24px}
  .layer-side{text-align:left;border-left:none;border-top:1px solid var(--line-2);padding:16px 0 0;margin-top:18px;align-items:flex-start}
  .layer-dom{align-self:flex-start}
  .brand-grid{grid-template-columns:1fr}
  .brand-card{min-height:0;padding:24px 22px 20px}
  .closing .wrap{grid-template-columns:1fr;gap:38px}
  .coop-grid{grid-template-columns:1fr}
  .foot-inner{grid-template-columns:1fr 1fr;gap:32px}
  .foot-inner > div:first-child{grid-column:1/-1}
  .foot-bar{padding:16px 20px 24px}
}
@media (max-width:640px){
  .wrap{padding:0 20px}
  .phero{padding:36px 0 26px}
  .psection{padding:32px 0 56px}
  .hero-h{font-size:clamp(36px,10.6vw,50px)}
  .hero-sub{font-size:16px}
  .hero-p{font-size:14px;line-height:1.95}
  .chain{grid-template-columns:1fr}
  .prose h2{margin-top:40px}
  .prose p,.prose ul,.prose ol{font-size:14.5px}
  .quote-block{padding:24px 22px}
  .quote-block p{font-size:20px}
  .foot-inner{grid-template-columns:1fr;gap:28px;padding:0 20px}
  .foot{padding-top:44px}
  .art-foot .btn,.hero-act .btn{padding:12px 20px;font-size:13.5px}
  .table-wrap table{min-width:460px}
}