/* ============ 设计系统：浅色纸面 · 读物风 ============ */
:root{
  --paper:#F4F0E8; --paper-2:#FFFDF8; --paper-3:#EDE7DA; --paper-4:#E5DFD1;
  --ink:#15201C; --ink-2:#4A544E; --ink-3:#7C857F;
  --line:rgba(21,32,28,.13); --line-2:rgba(21,32,28,.22);
  --teal:#0E6154; --teal-2:#0A4B41; --teal-s:rgba(14,97,84,.10);
  --gold:#C98A16; --gold-s:rgba(201,138,22,.14);
  --brick:#B8503A; --indigo:#2E5A88; --olive:#6B7A3A; --ochre:#A0632C; --plum:#6A5A7A;
  --r:18px; --r-s:10px; --r-l:26px; --max:1240px;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --num:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --sh:0 1px 2px rgba(21,32,28,.05),0 8px 24px -12px rgba(21,32,28,.14);
  --sh-h:0 2px 4px rgba(21,32,28,.06),0 18px 44px -16px rgba(21,32,28,.22);
  --spot-rgb:14,97,84;
  --ease:cubic-bezier(.34,1.56,.64,1);
  --ease-o:cubic-bezier(.22,.61,.36,1);
}
body.dark{
  --paper:#141A18; --paper-2:#1B2220; --paper-3:#232B28; --paper-4:#2C3532;
  --ink:#EDEAE1; --ink-2:#B4BCB6; --ink-3:#8A928C;
  --line:rgba(237,234,225,.14); --line-2:rgba(237,234,225,.26);
  --teal:#4FBFAA; --teal-2:#7FD8C6; --teal-s:rgba(79,191,170,.14);
  --gold:#E8B14A; --gold-s:rgba(232,177,74,.16);
  --brick:#E08368; --indigo:#7FA9D6; --olive:#A7B868; --ochre:#D49455; --plum:#A992C0;
  --sh:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
  --sh-h:0 2px 4px rgba(0,0,0,.45),0 18px 44px -16px rgba(0,0,0,.7);
  --spot-rgb:79,191,170;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--sans); font-size:16.5px; line-height:1.85;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
  transition:background .5s var(--ease-o),color .5s var(--ease-o);
}
body.no-cursor,body.no-cursor *{cursor:none}
img{display:block;max-width:100%}
a{color:var(--teal);text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 34px}
.mono{font-family:var(--num);font-variant-numeric:tabular-nums}

/* ============ 背景流场（全域自主运动基座） ============ */
#flow{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;opacity:.5}
body.dark #flow{opacity:.34}
.paper-grain{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.5;
  background-image:radial-gradient(circle at 20% 30%,rgba(21,32,28,.045) 0 1px,transparent 1px),
                   radial-gradient(circle at 70% 60%,rgba(21,32,28,.035) 0 1px,transparent 1px);
  background-size:22px 22px,31px 31px}
body.dark .paper-grain{opacity:.22;
  background-image:radial-gradient(circle at 20% 30%,rgba(237,234,225,.05) 0 1px,transparent 1px)}
.page{position:relative;z-index:2}

/* ============ 顶部导航 ============ */
.nav{position:fixed;top:0;left:0;right:0;z-index:60;height:62px;display:flex;align-items:center;
  backdrop-filter:blur(14px);background:color-mix(in srgb,var(--paper) 82%,transparent);
  border-bottom:1px solid var(--line);transition:transform .4s var(--ease-o)}
.nav.hide{transform:translateY(-100%)}
.nav .wrap{display:flex;align-items:center;gap:4px;width:100%}
.nav-brand{font-weight:700;font-size:14.5px;letter-spacing:.06em;margin-right:18px;white-space:nowrap}
.nav-brand em{font-style:normal;color:var(--gold)}
.nav-items{display:flex;gap:2px;position:relative;overflow-x:auto;scrollbar-width:none}
.nav-items::-webkit-scrollbar{display:none}
.nav-i{position:relative;padding:7px 13px;font-size:13.5px;color:var(--ink-2);white-space:nowrap;
  border-radius:99px;transition:color .25s var(--ease-o);background:none;border:0;font-family:inherit;cursor:pointer}
.nav-i:hover,.nav-i.on{color:var(--teal)}
.nav-pill{position:absolute;top:0;left:0;height:100%;background:var(--teal-s);border-radius:99px;
  pointer-events:none;transition:transform .42s var(--ease),width .42s var(--ease);z-index:-1;opacity:0}
.nav-pill.show{opacity:1}

/* ============ 情境光标 ============ */
#cur{position:fixed;top:0;left:0;width:14px;height:14px;border-radius:99px;
  background:var(--teal);z-index:90;pointer-events:none;transform:translate(-50%,-50%);
  transition:width .32s var(--ease),height .32s var(--ease),background .32s var(--ease-o),opacity .3s;
  opacity:0;mix-blend-mode:normal;display:grid;place-items:center}
#cur.on{opacity:1}
#cur .cl{font-size:11px;color:var(--paper-2);letter-spacing:.1em;opacity:0;transition:opacity .2s .1s;
  font-weight:600;white-space:nowrap}
#cur.big{width:88px;height:88px}
#cur.big .cl{opacity:1}
#cur.ring{background:transparent;border:1.5px solid var(--teal);width:38px;height:38px}
#cur-ring{position:fixed;top:0;left:0;width:34px;height:34px;border-radius:99px;z-index:89;
  pointer-events:none;transform:translate(-50%,-50%);border:1px solid var(--line-2);opacity:0;
  transition:opacity .3s}
#cur-ring.on{opacity:.85}

/* ============ Hero ============ */
.hero{min-height:100vh;min-height:100svh;display:flex;align-items:center;position:relative;overflow:hidden;padding:110px 0 70px}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;width:100%}
.hero-kick{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:.22em;
  color:var(--gold);font-weight:700;margin-bottom:22px}
.hero-kick::before{content:"";width:34px;height:1px;background:var(--gold)}
h1.hero-t{font-size:clamp(38px,5.4vw,68px);line-height:1.16;margin:0 0 22px;letter-spacing:-.02em;font-weight:800}
h1.hero-t .hl{position:relative;display:inline-block;color:#0E6FB8;font-size:1.2em;font-weight:900;letter-spacing:-.01em}
h1.hero-t .hl::after{content:"";position:absolute;left:0;right:0;bottom:.1em;height:.32em;
  background:rgba(14,111,184,.14);border-radius:2px;z-index:-1;transform:scaleX(0);transform-origin:left;
  animation:swipe 1.1s .5s var(--ease-o) forwards}
@keyframes swipe{to{transform:scaleX(1)}}
.hero-sub{font-size:17.5px;color:var(--ink-2);max-width:52ch;margin:0 0 30px}
.hero-sub b{color:var(--ink);font-weight:700}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.chip{display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border:1px solid var(--line);
  border-radius:99px;font-size:12.5px;color:var(--ink-2);background:var(--paper-2)}
.chip .dot{width:6px;height:6px;border-radius:99px;background:var(--teal)}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:560px}
.hstat{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-s);padding:16px 18px;
  box-shadow:var(--sh);transition:transform .38s var(--ease),box-shadow .38s var(--ease)}
.hstat:hover{transform:translateY(-5px);box-shadow:var(--sh-h)}
.hstat .n{font-family:var(--num);font-size:26px;font-weight:700;color:#0E6FB8;line-height:1.2}
.hstat .n s{text-decoration:none;font-size:15px;color:var(--ink-2)}
.hstat .l{font-size:12px;color:var(--ink-3);margin-top:5px;line-height:1.5}
.hero-fig{position:relative;align-self:end}
.hero-fig .frame{border-radius:var(--r-l);overflow:hidden;box-shadow:var(--sh-h);border:1px solid var(--line);
  position:relative;transform:rotate(-1.2deg)}
.hero-fig img{width:100%;max-width:none;height:420px;object-fit:cover;display:block}
.hero-fig .pgchip{position:absolute;left:16px;bottom:16px;background:var(--paper-2);color:var(--ink);
  font-family:var(--num);font-size:11.5px;padding:5px 11px;border-radius:99px;box-shadow:var(--sh);z-index:3}
.scroll-cue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);font-size:11.5px;
  color:var(--ink-3);letter-spacing:.18em;display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-cue i{display:block;width:1px;height:34px;background:linear-gradient(var(--line-2),transparent);
  animation:cue 2.2s var(--ease-o) infinite}
@keyframes cue{0%{transform:scaleY(.2);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}
  51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ============ Hero 全宽横屏变体（沉浸式 banner） ============ */
.hero--banner{min-height:82vh;min-height:82svh;padding:124px 0 96px;align-items:center}
.hero--banner .hero-media{position:absolute;inset:0;z-index:0;background:var(--ink);overflow:hidden}
.hero--banner .hero-media img,.hero--banner .hero-media video{width:100%;height:100%;object-fit:cover;display:block}
.hero--banner .hero-media .hero-video{object-position:center}
.hero--banner .hero-scrim{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,26,22,.72) 0%,rgba(7,26,22,.42) 50%,rgba(7,26,22,0) 82%,rgba(7,26,22,0) 100%)}
.hero--banner .hero-video::cue{background:rgba(0,0,0,.62);color:#fff;font-size:16px;line-height:1.4}
.hero--banner .wrap.hero-in{position:relative;z-index:2;grid-template-columns:1fr;gap:0;max-width:800px;color:#fff}
.hero--banner .hero-kick{color:#F2C879}
.hero--banner .hero-kick::before{background:#F2C879}
.hero--banner .hero-t{color:#fff}
.hero--banner .hero-t .hl{color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.25)}
.hero--banner .hero-t .hl::after{background:rgba(242,200,121,.32)}
.hero--banner .hero-sub{color:rgba(255,255,255,.88);max-width:54ch}
.hero--banner .hero-key{color:#fff;background:rgba(201,138,22,.18);border-left-color:var(--gold)}
.hero--banner .scroll-cue{color:rgba(255,255,255,.78)}
.hero--banner .scroll-cue i{background:linear-gradient(rgba(255,255,255,.7),transparent)}
.hero--banner > .pgchip{position:absolute;left:18px;bottom:18px;z-index:3;
  background:rgba(255,255,255,.92);color:var(--ink);font-family:var(--num);font-size:11.5px;
  padding:5px 11px;border-radius:99px;box-shadow:var(--sh)}

/* ============ 通用区块 ============ */
.screen{padding:96px 0;position:relative}
.screen.alt{background:linear-gradient(180deg,transparent,var(--paper-3) 12%,var(--paper-3) 88%,transparent)}
.screen.tall{padding:120px 0}
.sec-h{display:flex;align-items:flex-start;gap:20px;margin-bottom:14px}
.sec-no{font-family:var(--num);font-size:13px;font-weight:700;color:var(--gold);letter-spacing:.1em;
  padding-top:9px;white-space:nowrap}
.sec-t{font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.3;margin:0;letter-spacing:-.01em;position:relative}
.sec-t .und{position:absolute;left:0;bottom:-8px;height:3px;width:100%;
  background:linear-gradient(90deg,var(--teal),var(--gold));border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform 1.1s var(--ease-o)}
.sec-t.in .und{transform:scaleX(1)}
.sec-lead{color:var(--ink-2);font-size:16.5px;max-width:74ch;margin:26px 0 0}
.sec-lead b{color:var(--ink)}
.flowline{height:1px;background:linear-gradient(90deg,transparent,var(--line-2) 20%,var(--line-2) 80%,transparent);
  margin:78px auto;position:relative;overflow:hidden}
.flowline::after{content:"";position:absolute;top:0;left:-30%;width:30%;height:1px;
  background:linear-gradient(90deg,transparent,var(--teal),transparent);animation:fl 5.5s linear infinite}
@keyframes fl{to{left:130%}}

/* 引言块 */
.quote{border-left:3px solid var(--teal);background:var(--paper-2);padding:20px 24px;border-radius:0 var(--r-s) var(--r-s) 0;
  margin:26px 0;box-shadow:var(--sh)}
.quote p{margin:0;font-size:17px;line-height:1.8}
.quote.gold{border-left-color:var(--gold)}
.quote.brick{border-left-color:var(--brick)}
.quote .src{display:block;margin-top:10px;font-size:12.5px;color:var(--ink-3)}

/* 网格与卡片 */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g6{grid-template-columns:repeat(6,1fr)}
.card{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;
  box-shadow:var(--sh);transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh-h);border-color:var(--line-2)}
.card h4{margin:0 0 8px;font-size:16.5px;font-weight:700;display:flex;align-items:center;gap:10px}
.card p{margin:0;color:var(--ink-2);font-size:14.5px;line-height:1.75}
.card .ic{width:38px;height:38px;border-radius:11px;background:var(--teal-s);display:grid;place-items:center;flex:none}
.card .ic svg{width:21px;height:21px;fill:var(--teal)}
.card.c-brick .ic{background:rgba(184,80,58,.12)} .card.c-brick .ic svg{fill:var(--brick)}
.card.c-indigo .ic{background:rgba(46,90,136,.12)} .card.c-indigo .ic svg{fill:var(--indigo)}
.card.c-olive .ic{background:rgba(107,122,58,.14)} .card.c-olive .ic svg{fill:var(--olive)}
.card.c-ochre .ic{background:rgba(160,99,44,.13)} .card.c-ochre .ic svg{fill:var(--ochre)}
.card.c-plum .ic{background:rgba(106,90,122,.13)} .card.c-plum .ic svg{fill:var(--plum)}
.card.c-gold .ic{background:var(--gold-s)} .card.c-gold .ic svg{fill:var(--gold)}

/* 照片卡 */
.pcard{border-radius:var(--r-l);overflow:hidden;position:relative;box-shadow:var(--sh);
  border:1px solid var(--line);transition:transform .45s var(--ease),box-shadow .45s var(--ease)}
.pcard:hover{transform:translateY(-7px) scale(1.008);box-shadow:var(--sh-h)}
.pcard img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease-o)}
.pcard:hover img{transform:scale(1.06)}
.pcard .ov{position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(12,18,16,.72));
  display:flex;flex-direction:column;justify-content:flex-end;padding:20px;color:#fff}
.pcard .ov .k{font-size:12px;letter-spacing:.14em;color:var(--gold);font-weight:700;margin-bottom:5px}
.pcard .ov .t{font-size:16.5px;font-weight:700;line-height:1.4}
.pcard .ov .d{font-size:13px;opacity:.88;margin-top:6px;line-height:1.6}
.pcard .pgchip{position:absolute;left:14px;top:14px;background:rgba(255,253,248,.92);color:var(--ink);
  font-family:var(--num);font-size:11px;padding:4px 10px;border-radius:99px;z-index:3}
.pcard.tall{grid-row:span 2}
.pcard.h240 img{height:240px}
.pcard.h320 img{height:320px}
.pcard.h420 img{height:420px}
.pcard.full{width:100%;height:auto;display:block;margin-left:auto;margin-right:auto}
.pcard.full img{height:auto;object-fit:initial;width:100%}

/* 数字指标 */
.kpi{display:flex;flex-direction:column;gap:2px}
.kpi .v{font-family:var(--num);font-size:clamp(28px,3.4vw,42px);font-weight:800;color:var(--teal);line-height:1.1}
.kpi .v small{font-size:.45em;font-weight:600;color:var(--ink-2);margin-left:3px}
.kpi .k{font-size:13px;color:var(--ink-3);line-height:1.55}
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.kpi-row .cell{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-s);padding:18px 20px;
  box-shadow:var(--sh);transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
.kpi-row .cell:hover{transform:translateY(-5px);box-shadow:var(--sh-h)}
.kpi-row .cell.g .v{color:var(--gold)} .kpi-row .cell.b .v{color:var(--brick)}
.kpi-row .cell.i .v{color:var(--indigo)} .kpi-row .cell.o .v{color:var(--ochre)}

/* 表格 */
.tbl{width:100%;border-collapse:collapse;font-size:14.5px;background:var(--paper-2);
  border:1px solid var(--line);border-radius:var(--r-s);overflow:hidden;box-shadow:var(--sh)}
.tbl th{background:var(--paper-3);text-align:left;padding:13px 16px;font-size:13px;font-weight:700;
  color:var(--ink-2);border-bottom:1px solid var(--line-2);letter-spacing:.03em}
.tbl td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}
.tbl tr:last-child td{border-bottom:0}
.tbl tbody tr{transition:background .25s}
.tbl tbody tr:hover{background:var(--teal-s)}
.tbl .num{font-family:var(--num)}

/* 强调标签 */
.tag{display:inline-block;padding:3px 10px;border-radius:99px;font-size:11.5px;font-weight:700;letter-spacing:.04em}
.tag.t{background:var(--teal-s);color:var(--teal)}
.tag.g{background:var(--gold-s);color:var(--gold)}
.tag.b{background:rgba(184,80,58,.13);color:var(--brick)}
.tag.i{background:rgba(46,90,136,.13);color:var(--indigo)}
.tag.o{background:rgba(107,122,58,.15);color:var(--olive)}
.tag.n{background:var(--paper-3);color:var(--ink-2)}
b.hl{background:linear-gradient(180deg,transparent 62%,var(--gold-s) 62%);font-weight:700}