/* 春阳官网 · 沿用 Adam 认可的那套排版语言
   Noto Serif SC 做标题（宋体的重量感 = 大气），IBM Plex Mono 做眉标，
   正文走系统无衬线保证可读性。金色=春/顾问，绯色=阳/销冠。
   移动优先：先把 360–430px 写对，再往上铺开。 */
:root{
  --bg:#070b14; --panel:#0f1626; --panel2:#141d31; --line:#25304a; --line-soft:#1a2338;
  --text:#f4f6fb; --muted:#8f9bb3; --dim:#7f8daa;
  --gold:#e6b85c; --gold2:#ffda8a; --gold-ink:#0b1020;
  --hot:#ef5d78; --hot2:#ff8fa3;
  --card:linear-gradient(155deg,rgba(20,29,49,.96),rgba(12,18,31,.96));
  --shadow:0 20px 60px rgba(0,0,0,.28);
  --top-bg:rgba(7,11,20,.86); --nav-active-bg:rgba(230,184,92,.11);
  --gold-soft:rgba(230,184,92,.13); --hot-soft:rgba(239,93,120,.13);
  --gold-wash:rgba(230,184,92,.05); --gold-line:rgba(230,184,92,.32);
  --gold-btn-start:#ffda8a; --gold-btn-end:#c98a2c; --gold-btn-shadow:rgba(197,137,45,.18);
  --hot-btn-start:#c43c57; --hot-btn-end:#a92643; --hot-btn-shadow:rgba(169,38,67,.24);
  --theme-icon-shadow:inset 0 1px 0 rgba(255,255,255,.09),0 4px 10px rgba(0,0,0,.20);
  --maxw:1120px;
  color-scheme:dark;
}
html[data-theme="dark"]{color-scheme:dark}
html[data-theme="light"]{
  --bg:#f5f1e8; --panel:#fffdfa; --panel2:#efe8dc; --line:#b7ad9e; --line-soft:#d9d0c3;
  --text:#1b2230; --muted:#4c586d; --dim:#586477;
  --gold:#855500; --gold2:#b8780c; --gold-ink:#14100a;
  --hot:#ad2947; --hot2:#c43253;
  --card:linear-gradient(155deg,#fffdfa,#f7f1e7);
  --shadow:0 16px 42px rgba(55,42,22,.10);
  --top-bg:rgba(245,241,232,.90); --nav-active-bg:rgba(133,85,0,.10);
  --gold-soft:rgba(133,85,0,.10); --hot-soft:rgba(173,41,71,.10);
  --gold-wash:rgba(133,85,0,.06); --gold-line:rgba(133,85,0,.34);
  --gold-btn-start:#e4b84c; --gold-btn-end:#b8780c; --gold-btn-shadow:rgba(133,85,0,.18);
  --hot-btn-start:#b72949; --hot-btn-end:#941a37; --hot-btn-shadow:rgba(148,26,55,.20);
  --theme-icon-shadow:inset 0 1px 0 rgba(255,255,255,.85),0 3px 8px rgba(55,42,22,.12);
  color-scheme:light;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  transition:background-color .2s ease,color .2s ease;
}
h1,h2,h3,h4{font-family:"Noto Serif SC","Songti SC","SimSun",Georgia,serif;text-wrap:balance;margin:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
p{margin:0}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
section{padding:54px 0}
.eyebrow{
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:.66rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold);margin:0 0 14px;
}
.eyebrow.hot{color:var(--hot)}
h1{font-size:clamp(2.1rem,8.2vw,4rem);font-weight:700;line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(1.5rem,5.4vw,2.3rem);font-weight:700;line-height:1.3;margin-bottom:14px}
h3{font-size:1.05rem;font-weight:700}
.k{color:var(--gold)}
.x{color:var(--hot)}
.lead{font-size:clamp(.98rem,3.4vw,1.12rem);color:var(--muted);max-width:38em}
.note{color:var(--dim);font-size:.82rem;line-height:1.75}
.note a{display:inline-flex;align-items:center;min-height:44px}

/* --- 顶栏 --- */
.top{position:sticky;top:0;z-index:30;background:var(--top-bg);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-soft);transition:background-color .2s ease,border-color .2s ease}
.top-inner{display:flex;align-items:center;gap:8px;min-height:60px}
.brand{display:flex;align-items:center;min-height:44px;gap:9px;font-family:"Noto Serif SC",serif;font-weight:900;font-size:1.02rem}
.brand-mark{width:29px;height:29px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(135deg,var(--gold-btn-start),var(--gold-btn-end));color:var(--gold-ink);font-family:"Noto Serif SC",serif;font-weight:900;font-size:15px}
.top-nav{margin-left:auto;display:flex;gap:2px;align-items:center}
.top-nav a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:0 10px;border-radius:8px;font-size:12.5px;font-weight:700;color:var(--muted);white-space:nowrap}
.top-nav a:hover,.top-nav a[aria-current="page"]{background:var(--nav-active-bg);color:var(--text)}
.theme-toggle{width:44px;min-width:44px;min-height:44px;display:inline-grid;place-items:center;padding:0;border:0;background:transparent;color:var(--text);font:700 12px/1 inherit;cursor:pointer;box-shadow:none;border-radius:50%;flex:0 0 44px}
.theme-icon{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--panel2);border:1px solid var(--line-soft);box-shadow:var(--theme-icon-shadow);font-size:15px;line-height:1;transition:transform .14s ease,border-color .14s ease,box-shadow .14s ease}
.theme-toggle:hover .theme-icon{border-color:var(--gold);transform:translateY(-1px)}
.theme-toggle:active .theme-icon{transform:translateY(0) scale(.94);box-shadow:inset 0 2px 5px rgba(0,0,0,.20)}
.theme-toggle:focus-visible{outline:2px solid var(--gold);outline-offset:1px}

/* --- 按钮 --- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:0 22px;border-radius:10px;border:0;cursor:pointer;
  font-size:13.5px;font-weight:700;white-space:nowrap;font-family:inherit;
  background:linear-gradient(135deg,var(--gold-btn-start),var(--gold-btn-end));color:var(--gold-ink);
  box-shadow:0 8px 24px var(--gold-btn-shadow);transition:transform .14s ease,filter .14s ease;
}
.btn:hover{filter:brightness(1.05);transform:translateY(-1px)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text);box-shadow:none}
.btn-hot{background:linear-gradient(135deg,var(--hot-btn-start),var(--hot-btn-end));color:#fff;box-shadow:0 8px 24px var(--hot-btn-shadow)}
.hero-cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}

/* --- 首屏 --- */
.hero{padding:52px 0 42px}
.hero h1{margin-bottom:20px}
.hero-sub{display:grid;gap:5px;margin:0 0 26px;color:var(--muted);font-size:clamp(.94rem,3.4vw,1.05rem)}
.hero-sub b{color:var(--text);font-weight:700}

/* 春 / 阳 字形对照 —— 沿用原版 */
.glyphs{display:grid;grid-template-columns:1fr 1px 1fr;gap:14px;align-items:center;margin-top:34px;padding-top:28px;border-top:1px solid var(--line-soft)}
.glyph{text-align:center;padding:0 4px}
.glyph .ch{font-family:"Noto Serif SC",serif;font-weight:900;font-size:clamp(3.2rem,14vw,5.4rem);line-height:1;display:block}
.glyph.chun .ch{color:var(--gold)}
.glyph.yang .ch{color:var(--hot)}
.glyph .role{display:block;margin-top:8px;font-size:.8rem;font-weight:700;color:var(--text)}
.glyph .say{display:block;margin-top:3px;font-size:.74rem;color:var(--dim);line-height:1.6}
.axis{background:var(--line);height:100%;min-height:118px;width:1px}

/* --- 主张卡 --- */
.claim{margin-top:30px;padding:22px;border:1px solid var(--line);border-radius:16px;background:var(--card);box-shadow:var(--shadow)}
.claim p{font-family:"Noto Serif SC",serif;font-size:clamp(1rem,4vw,1.28rem);font-weight:700;line-height:1.85}
.claim .tail{font-family:inherit;margin-top:14px;color:var(--muted);font-size:.88rem;font-weight:400;line-height:1.8}

/* --- 卡片 --- */
.grid{display:grid;gap:14px}
.card{padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--card);box-shadow:var(--shadow)}
.card>p{margin-top:12px;color:var(--muted);font-size:.92rem}
.tag{display:inline-flex;align-items:center;padding:5px 11px;border-radius:999px;font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.14em;font-weight:500;text-transform:uppercase}
.tag.chun{background:var(--gold-soft);color:var(--gold)}
.tag.yang{background:var(--hot-soft);color:var(--hot)}
.bullets{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:9px}
.bullets li{position:relative;padding-left:18px;color:var(--muted);font-size:.88rem;line-height:1.75}
.bullets li:before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--gold)}
.card.yang .bullets li:before{background:var(--hot)}

/* --- 替代岗位 --- */
.replace{display:grid;gap:10px;margin-top:22px}
.replace-row{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center;padding:16px;border:1px solid var(--line-soft);border-radius:12px;background:var(--panel)}
.replace-row b{font-size:.95rem}
.replace-row span{display:block;color:var(--dim);font-size:.74rem;margin-top:3px;line-height:1.5}
.replace-arrow{font-family:"IBM Plex Mono",monospace;color:var(--gold);font-weight:500;font-size:1rem}
.replace-row .out b{color:var(--gold)}

/* --- 合作流程 --- */
.flow{display:grid;margin-top:28px}
.flow-step{position:relative;display:grid;grid-template-columns:42px minmax(0,1fr);gap:16px;padding-bottom:26px}
.flow-step:last-child{padding-bottom:0}
.flow-step:not(:last-child):before{content:"";position:absolute;left:20px;top:46px;bottom:0;width:1px;background:linear-gradient(180deg,var(--gold),rgba(239,93,120,.5))}
.flow-no{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-family:"IBM Plex Mono",monospace;font-weight:500;font-size:.9rem;color:var(--gold-ink);background:linear-gradient(135deg,var(--gold-btn-start),var(--gold-btn-end))}
.flow-step.final .flow-no{background:linear-gradient(135deg,var(--hot-btn-start),var(--hot-btn-end));color:#fff}
.flow-body h3{margin-bottom:7px}
.flow-body p{color:var(--muted);font-size:.9rem}
.flow-gate{margin:6px 0 26px;padding:14px 16px;border:1px dashed var(--line);border-radius:12px;background:var(--gold-wash)}
.flow-gate b{color:var(--gold);font-size:.88rem}
.flow-gate p{margin-top:5px;color:var(--muted);font-size:.85rem}

/* --- 两笔账 --- */
.ledger{display:grid;gap:12px;margin-top:16px}
.ledger-card{padding:20px;border:1px solid var(--line-soft);border-radius:12px;background:var(--panel)}
.ledger-card .tag{margin-bottom:12px}
.ledger-card h3{font-size:1rem;margin-bottom:8px}
.ledger-card p{color:var(--muted);font-size:.88rem}
.ledger-card ul{margin:12px 0 0;padding-left:18px;color:var(--muted);font-size:.85rem;line-height:1.8}

/* --- 报价 --- */
.pricing{border-color:var(--gold-line)}
.price-pair{display:grid;gap:12px;margin:22px 0 4px}
.price-item{padding:20px;border:1px solid var(--line-soft);border-radius:12px;background:var(--panel)}
.price-item .tag{margin-bottom:10px}
.price-item .rule{font-family:"Noto Serif SC",serif;font-size:clamp(1rem,4.2vw,1.2rem);font-weight:700;line-height:1.75}
.rant{margin-top:24px;display:grid;gap:13px}
.rant p{color:var(--muted);font-size:.92rem;line-height:1.9}
.rant .punch{font-family:"Noto Serif SC",serif;color:var(--text);font-weight:700;font-size:clamp(1rem,4vw,1.18rem);line-height:1.75}

/* --- 二维码 --- */
.qr-block{display:grid;gap:20px;justify-items:center;text-align:center;padding:32px 22px;border:1px solid var(--line);border-radius:16px;background:var(--card);box-shadow:var(--shadow)}
.qr-frame{position:relative;width:min(228px,64vw);aspect-ratio:1;border-radius:14px;padding:13px;background:#fff}
.qr-frame img{width:100%;height:100%;object-fit:contain}
.qr-frame:before,.qr-frame:after{content:"";position:absolute;width:24px;height:24px;border:2px solid var(--gold);border-radius:6px}
.qr-frame:before{top:-8px;left:-8px;border-right:0;border-bottom:0}
.qr-frame:after{bottom:-8px;right:-8px;border-left:0;border-top:0}
.qr-caption{max-width:26em;color:var(--text);font-size:clamp(.92rem,3.6vw,1.02rem);font-weight:700;line-height:1.85}
.qr-gate{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);padding:6px 14px;border:1px solid var(--gold-line);border-radius:999px}

/* --- 页脚 --- */
footer{border-top:1px solid var(--line-soft);padding:32px 0;color:var(--dim);font-size:.82rem}
.footer-inner{display:grid;gap:12px}
.footer-links{display:flex;flex-wrap:wrap;gap:16px}
.footer-links a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;color:var(--muted);font-weight:700}

@media(min-width:760px){
  section{padding:76px 0}
  .wrap{padding:0 28px}
  .hero{padding:82px 0 60px}
  .grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ledger{grid-template-columns:repeat(2,minmax(0,1fr))}
  .price-pair{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-step{grid-template-columns:52px minmax(0,1fr);gap:20px}
  .flow-no{width:52px;height:52px;border-radius:15px;font-size:1rem}
  .flow-step:not(:last-child):before{left:25px;top:56px}
  .glyphs{gap:30px}
}
@media(max-width:759px){
  .hero-cta .btn{width:100%}
  .replace-row{grid-template-columns:1fr;text-align:center;gap:8px}
  .replace-arrow{transform:rotate(90deg)}
  .top-inner{flex-wrap:wrap;row-gap:4px;padding-top:7px;padding-bottom:7px}
  .brand{min-width:0}
  .theme-toggle{margin-left:auto}
  .top-nav{order:3;flex:1 0 100%;margin-left:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:2px}
  .top-nav a{padding:0 4px;font-size:12px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.qr-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.qr-chips span{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.1em;color:var(--muted);padding:6px 13px;border:1px solid var(--line);border-radius:999px}