/* ============================================================
   QINGLAB 品牌设计系统 v1.0 — 2026-10-15 楚确认锁定
   专属蓝 #556B87 · 浅蓝灰底 + 白色大圆角卡片 + 巨型编号 + 细网格线
   以后新增任何内容，一律复用本文件的类，不再另起炉灶
   ============================================================ */
:root{
  --blue:#556B87;        /* 专属品牌蓝，唯一主色 */
  --blue-deep:#3E5470;   /* 深一档，用于蓝底上的次级文字 */
  --blue-tint:#DCE5EE;   /* 浅蓝块 */
  --num:#E8EEF4;         /* 巨型编号专用浅色 */
  --bg:#F1F5F9;          /* 页面底 */
  --card:#FFFFFF;        /* 卡片 */
  --ink:#22303F;         /* 标题墨色 */
  --muted:#7C8794;       /* 次级文字 */
  --line:#EEF1F5;        /* 卡片内细线 */
  --r-card:22px;         /* 卡片大圆角 */
  --r-img:14px;          /* 图片圆角 */
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
.wrap{max-width:1120px;margin:0 auto;padding:0 28px}

/* ---- 导航 ---- */
.nav{position:sticky;top:0;z-index:50;background:rgba(241,245,249,.94);backdrop-filter:blur(8px)}
.nav-in{display:flex;justify-content:space-between;align-items:center;height:62px}
.logo{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font-weight:700;font-size:13.5px;letter-spacing:2px}
.logo i{width:11px;height:11px;background:var(--blue);border-radius:3px}
.nav-links{display:flex;gap:26px;align-items:center;font-size:13px}
.nav-links a{color:var(--muted);text-decoration:none}
.nav-links a:hover,.nav-links a.on{color:var(--ink);font-weight:700}
.pill{display:inline-block;background:var(--blue);color:#fff;padding:7px 18px;border-radius:99px;font-size:12.5px;font-weight:700;text-decoration:none}
.pill:hover{background:var(--blue-deep)}

/* ---- AI 对话胶囊（方案二）+ 浮层 ---- */
.ai-pill{flex:1;max-width:400px;margin:0 28px;display:flex;align-items:center;gap:10px;background:var(--blue);border:none;border-radius:999px;padding:10px 18px;cursor:pointer;font-size:12.5px;font-weight:700;color:#F1F5F9;letter-spacing:.5px;font-family:inherit}
.ai-pill:hover{background:var(--blue-deep)}
.ai-pill .dot{width:7px;height:7px;background:#9FE1CB;border-radius:50%;flex:none;animation:aiPulse 1.6s ease infinite}
.ai-pill .arr{margin-left:auto;font-weight:400}
@keyframes aiPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.75)}}
@media(max-width:900px){.ai-pill{margin:0 14px;padding:9px 14px;font-size:11.5px}.ai-pill .arr{display:none}}
@media(max-width:640px){.ai-pill{display:none}.nav-links{gap:14px}}
.install-fab{position:fixed;right:18px;bottom:18px;z-index:55;background:var(--blue);color:#fff;border:none;border-radius:999px;padding:13px 22px;font-size:13px;font-weight:700;cursor:pointer;font-family:inherit;letter-spacing:1px;box-shadow:0 8px 30px rgba(0,0,0,.45)}
.install-fab:hover{background:var(--blue-deep)}
.install-tip{position:fixed;left:50%;transform:translateX(-50%);bottom:84px;z-index:55;background:#12151C;border:1px solid rgba(85,107,135,.5);color:#F5F2EA;font-size:13px;padding:12px 18px;border-radius:12px}

/* ---- 卡片体系：每个 section 就是一张白卡 ---- */
.card{background:var(--card);border-radius:var(--r-card);margin:14px 0;position:relative;overflow:hidden}
.card-pad{padding:52px 56px}
@media(max-width:760px){.card-pad{padding:34px 26px}}

/* ---- 巨型章节编号（放卡片右上角）---- */
.big-no{position:absolute;top:-14px;right:26px;font-size:170px;font-weight:900;color:var(--num);line-height:1;font-family:Arial,sans-serif;letter-spacing:-4px;user-select:none}
@media(max-width:760px){.big-no{font-size:96px;top:-8px}}

/* ---- 小章节编号（标题前）---- */
.sec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:22px}
.sec-no{font-size:24px;font-weight:900;color:var(--num);font-family:Arial,sans-serif;line-height:1}
.sec-head h2{font-size:20px;font-weight:700;margin:0}
.sec-head .more{margin-left:auto;font-size:11px;color:var(--blue);font-weight:700;letter-spacing:2px;text-decoration:none}

/* ---- 眉标：短横线 + 字距标签 ---- */
.eyebrow{display:flex;align-items:center;gap:12px;font-size:11px;color:var(--blue);letter-spacing:5px;font-weight:700;margin:0 0 22px}
.eyebrow::before{content:"";width:38px;height:1px;background:var(--blue)}

/* ---- 标题 ---- */
h1{font-size:44px;line-height:1.3;font-weight:700;letter-spacing:.5px;margin:0 0 20px}
h1 .hl{color:var(--blue)}
h2{font-size:23px;font-weight:700;margin:0 0 10px;line-height:1.5}
h3{font-size:17px;font-weight:700;margin:0 0 8px}
.sub{color:var(--muted);max-width:640px;margin:0 0 22px;font-size:14px;line-height:2}

/* ---- 细线网格（卡片内分栏）---- */
.grid{display:grid;border-top:1px solid var(--line)}
.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:1fr 1fr 1fr}.g4{grid-template-columns:repeat(4,1fr)}
.cell{padding:26px 40px 30px;border-right:1px solid var(--line)}
.cell:last-child{border-right:none}
.cell .lab{font-size:11px;color:var(--blue);font-weight:700;letter-spacing:3px;margin-bottom:8px}
.cell b,.cell .bt{display:block;font-size:15px;font-weight:700;margin-bottom:6px;color:var(--ink)}
.cell p,.cell span{font-size:13px;color:var(--muted);line-height:1.9;margin:0}
@media(max-width:760px){.g2,.g3,.g4{grid-template-columns:1fr}.cell{border-right:none;border-bottom:1px solid var(--line);padding:22px 26px}}

/* ---- 指标 ---- */
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
.metric{background:var(--blue);border-radius:var(--r-img);padding:26px 28px;color:#fff}
.metric.alt{background:var(--blue-tint);color:var(--blue-deep)}
.metric b{display:block;font-size:26px;font-weight:900}
.metric span{display:block;font-size:12px;color:rgba(255,255,255,.75);margin-top:6px;line-height:1.7}
.metric.alt span{color:#5F7186}

/* ---- 徽章 / 标签 ---- */
.badges{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0 0}
.badge{background:var(--bg);border-radius:999px;padding:6px 16px;font-size:13px;color:var(--muted)}
.badge b{color:var(--blue)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 4px}
.chip{background:var(--bg);border-radius:999px;padding:4px 14px;font-size:12.5px;color:var(--muted)}

/* ---- 时间线阶段 ---- */
.stage{padding:30px 0;border-top:1px solid var(--line)}
.stage:first-of-type{border-top:none;padding-top:0}
.stage-head{display:flex;align-items:baseline;gap:12px;margin-bottom:12px}
.stage-head .no{font-size:13px;color:var(--blue);font-weight:700;letter-spacing:2px}
.stage-head h3{font-size:18px;margin:0}
.stage .story{margin:0 0 8px;max-width:720px;color:var(--ink)}
.result{display:inline-block;background:var(--blue-tint);border-left:3px solid var(--blue);padding:10px 18px;border-radius:0 8px 8px 0;margin-top:10px;font-size:14px;color:var(--blue-deep)}
.result b{color:var(--blue)}

/* ---- 图片 ---- */
.shots{display:flex;gap:14px;flex-wrap:wrap;margin:18px 0 6px}
.shots img{height:280px;width:auto;max-width:100%;border-radius:var(--r-img);display:block;object-fit:cover}
.shots.wide img{height:auto;width:300px}
.cap{font-size:12px;color:var(--muted);margin:8px 0 0}
.imgcard{width:100%;border-radius:var(--r-img);display:block;object-fit:cover}

/* ---- 按钮 ---- */
.btn{display:inline-block;padding:12px 30px;border-radius:99px;font-size:12.5px;font-weight:700;text-decoration:none;letter-spacing:1px}
.btn-solid{background:var(--blue);color:#fff}
.btn-solid:hover{background:var(--blue-deep)}
.btn-ghost{border:1px solid var(--line);color:var(--ink);background:#fff}
.link-ul{display:inline-block;font-size:12.5px;color:var(--blue);font-weight:700;letter-spacing:2px;text-decoration:none;border-bottom:1px solid var(--blue);padding-bottom:4px}

/* ---- 引用 ---- */
.quote{background:var(--bg);border-radius:var(--r-img);padding:26px 30px}
.quote p{margin:0;font-size:14.5px;line-height:1.9}
.quote .who{font-size:12.5px;color:var(--muted);margin-top:10px}

/* ---- 客户墙 ---- */
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.wall div{background:var(--bg);border-radius:10px;padding:14px 16px;font-size:13px;color:var(--muted);text-align:center}
@media(max-width:760px){.wall{grid-template-columns:1fr 1fr}}

/* ---- 团队 ---- */
.team{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.member{display:flex;gap:18px;align-items:flex-start}
.member .avatar{width:92px;height:auto;border-radius:var(--r-img);flex-shrink:0}
.member .avatar-ph{width:92px;aspect-ratio:4/4.9;border-radius:var(--r-img);flex-shrink:0;background:var(--blue-tint);display:flex;align-items:center;justify-content:center;color:var(--blue);font-size:26px;font-weight:700}
.member b{font-size:15px}
.member .role{font-size:11px;color:var(--blue);letter-spacing:2px;margin:2px 0 8px;font-weight:700}
.member p{font-size:13px;color:var(--muted);margin:0;line-height:1.8}
.member .edu{font-size:12px;color:var(--muted);margin-top:8px;line-height:1.7}
@media(max-width:760px){.team{grid-template-columns:1fr}}

/* ---- 蓝色通栏 CTA（页面收尾）---- */
.cta-band{background:var(--blue);border-radius:var(--r-card) var(--r-card) 0 0;padding:30px 52px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-band .t{font-size:16px;color:#fff;font-weight:700}
.cta-band .s{font-size:11.5px;color:#C9D5E1;margin-top:5px;letter-spacing:1px}
.cta-band .btn{background:#fff;color:var(--blue-deep)}

/* ---- 首屏巨字海报 ---- */
.hero-top{display:flex;justify-content:space-between;font-size:11px;color:var(--blue);font-weight:700;letter-spacing:3px;padding:26px 52px 0}
.hero-giant{font-size:clamp(44px,8.5vw,88px);font-weight:900;line-height:1.06;letter-spacing:-1px;color:var(--ink)}
.hero-giant .solid{color:var(--blue)}
.hero-giant .outline{color:transparent;-webkit-text-stroke:2px var(--blue)}
.hero-circle{width:54px;height:54px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;text-decoration:none;flex-shrink:0}
.hero-circle:hover{background:var(--blue-deep)}

/* ---- 跑马灯横幅 ---- */
.marquee{background:var(--blue);overflow:hidden;padding:12px 0}
.marquee div{white-space:nowrap;color:#fff;font-size:13.5px;font-weight:700;letter-spacing:3px;display:inline-block;animation:marquee 16s linear infinite}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---- 开场片头（复刻 siena.film 条纹机制：黑白竖条长出 → 楚晴反色浮现 → 条纹退成细线 → 停1秒 → 上掀）---- */
/* ---- 开场片头：米白底 → 黑条满高匀速变宽铺满 → 米色字标 difference 反色浮现 → 副标 → 停1秒 → 上掀进站（复刻 siena.film 逐帧机制）---- */
.intro{position:fixed;inset:0;z-index:100;background:#FBF4ED;overflow:hidden;pointer-events:none;animation:introUp .8s cubic-bezier(.85,0,.15,1) 4.9s forwards}
.intro .bars{position:absolute;inset:0;display:flex}
.intro .bars i{flex:1;background:#000;transform:scaleX(.02);transform-origin:center;animation:barWide 2.3s linear .3s forwards}
.intro .nm{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:Georgia,'Songti SC','SimSun',serif;font-size:clamp(84px,15vw,150px);font-weight:700;color:#FBF4ED;letter-spacing:.06em;line-height:1;mix-blend-mode:difference;opacity:0;animation:nmIn .6s ease .95s forwards}
.intro .sl{position:absolute;left:0;right:0;top:60.5%;text-align:center;font-family:Georgia,'Songti SC','SimSun',serif;font-size:clamp(18px,2.6vw,24px);color:#FBF4ED;letter-spacing:.3em;text-indent:.3em;mix-blend-mode:difference;opacity:0;transform:translateY(10px);animation:slIn 1s cubic-bezier(.2,.7,.2,1) 2.85s forwards}
.intro .sm{position:absolute;left:0;right:0;top:72%;text-align:center;font-size:10px;color:rgba(251,244,237,.5);font-weight:400;letter-spacing:1em;text-indent:1em;mix-blend-mode:difference;opacity:0;animation:nmIn .8s ease 3.5s forwards}
@keyframes barWide{to{transform:scaleX(1)}}
@keyframes nmIn{to{opacity:1}}
@keyframes slIn{to{opacity:1;transform:none}}
@keyframes introUp{to{transform:translateY(-101%);visibility:hidden}}
@keyframes barWide{to{transform:scaleX(1)}}
@keyframes nmIn{to{opacity:1}}
@keyframes introUp{to{transform:translateY(-101%);visibility:hidden}}

/* 首屏元素入场（跟随揭幕节奏） */
.reveal{overflow:hidden}
.reveal>*{display:block;transform:translateY(115%);animation:rise .8s cubic-bezier(.2,.7,.2,1) forwards}
.reveal.l1>*{animation-delay:5.4s}
.reveal.l2>*{animation-delay:5.55s}
@keyframes rise{to{transform:translateY(0)}}
.fade-in{opacity:0;animation:fadeIn .8s ease forwards}
.fade-in.d1{animation-delay:5.8s}
.fade-in.d2{animation-delay:5.95s}
@keyframes fadeIn{to{opacity:1}}
@media (prefers-reduced-motion:reduce){
  .intro{display:none}
  .reveal>*{transform:none;animation:none}
  .fade-in{opacity:1;animation:none}
  .marquee div{animation:none}
}

/* ---- 深色关于我模块（蓝条纹黑底 + 蓝色跳色块）---- */
.card-dark{background:#0B0B0D;color:#EDEAE3}
.card-dark::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,transparent 0 54px,rgba(85,107,135,.14) 54px 55px);pointer-events:none}
.card-dark .card-pad{position:relative}
.card-dark .big-no{color:#17171B}
.card-dark .sec-no{color:#232327}
.card-dark .sec-head h2{color:#F5F2EA}
.card-dark .sec-head .more{color:#8FA9C6}
.card-dark .sub{color:#8B8985}
.card-dark .stage{border-top:1px solid #1D1D22}
.card-dark .stage:first-of-type{border-top:none}
.card-dark .stage-head .no{color:#8FA9C6}
.card-dark .stage-head h3{color:#F5F2EA}
.card-dark .story{color:#9C9A98}
.card-dark .chip{background:#17171B;color:#8B8985}
.card-dark .result-r{display:inline-block;background:var(--blue);color:#fff;padding:11px 18px;border-radius:0 8px 8px 0;margin-top:12px;font-size:13.5px;line-height:1.8}
.card-dark .result-r b{color:#fff}
.card-dark .imgwrap{position:relative}
.card-dark .cap{color:#676560}
.card-dark .ptag{position:absolute;top:10px;left:10px;background:var(--blue);color:#fff;font-size:10px;font-weight:700;letter-spacing:2px;padding:4px 10px;border-radius:3px;z-index:2}
.card-dark .badges .badge{background:#17171B;color:#8B8985}
.card-dark .badges .badge b{color:#A8C6E8}

/* ---- 深色页面（个人板块：首页 + 关于我；业务页保持浅色）---- */
body.dark{background:#0B0B0D;background-image:repeating-linear-gradient(90deg,transparent 0 54px,rgba(85,107,135,.09) 54px 55px);color:#EDEAE3}
body.dark .nav{background:rgba(11,11,13,.94)}
body.dark .logo{color:#F5F2EA}
body.dark .nav-links a{color:#8B8985}
body.dark .nav-links a.on,body.dark .nav-links a:hover{color:#F5F2EA}
body.dark .card{background:transparent;border-radius:0}
body.dark .big-no{color:#17171B}
body.dark .sec-no{color:#232327}
body.dark .sec-head h2{color:#F5F2EA}
body.dark .sec-head .more{color:#8FA9C6}
body.dark h1{color:#F5F2EA}
body.dark h1 .hl{color:#7FA1C4}
body.dark .hero-giant{color:#F5F2EA}
body.dark .hero-giant .solid{color:#7FA1C4}
body.dark .hero-giant .outline{-webkit-text-stroke-color:#7FA1C4}
body.dark .eyebrow{color:#8FA9C6}
body.dark .eyebrow::before{background:#8FA9C6}
body.dark .sub{color:#8B8985}
body.dark .stage{border-top:1px solid #1D1D22}
body.dark .stage-head .no{color:#8FA9C6}
body.dark .stage-head h3{color:#F5F2EA}
body.dark .story{color:#9C9A98}
body.dark .chip{background:#17171B;color:#8B8985}
body.dark .badge{background:#17171B;color:#8B8985}
body.dark .badge b{color:#A8C6E8}
body.dark .result{background:var(--blue);border-left-color:var(--blue);color:#fff;border-radius:0 8px 8px 0}
body.dark .result b{color:#fff}
body.dark .cell{border-right-color:#1D1D22;border-bottom-color:#1D1D22}
body.dark .cell b,body.dark .cell .bt{color:#F5F2EA}
body.dark .cell p,body.dark .cell span{color:#8B8985}
body.dark .cap{color:#676560}
body.dark .btn-ghost{background:transparent;border-color:#2A2A30;color:#EDEAE3}
body.dark footer{color:#6E6C66}
body.dark .imgcard{filter:none}

/* ---- 衬线故事体（变体A·小说连载：引言大字 + 首行缩进正文 + 蓝底成果条）---- */
.stage-head .ch{margin-left:auto;font-family:Georgia,'Songti SC',serif;font-size:11px;letter-spacing:.3em;color:var(--muted)}
.story-quote{font-family:Georgia,'Songti SC','SimSun',serif;font-size:25px;line-height:1.75;margin:18px 0 24px;color:var(--ink)}
.story-quote i{font-style:normal;color:var(--blue)}
.story-serif{font-family:Georgia,'Songti SC','SimSun',serif;font-size:15px;line-height:2.25;text-indent:2em;margin:0;color:var(--ink)}
.story-serif + .story-serif{margin-top:8px}
.stage-duo{display:grid;grid-template-columns:1.4fr 1fr;gap:28px;align-items:start}
.stage-duo .imgcard{height:230px}
@media(max-width:760px){.stage-duo{grid-template-columns:1fr}}
.result-r{display:inline-block;background:var(--blue-tint);border-left:3px solid var(--blue);color:var(--blue-deep);padding:11px 18px;border-radius:0 8px 8px 0;margin-top:16px;font-size:13.5px;line-height:1.8}
.result-r b{color:var(--blue)}
.imgwrap{position:relative}
.ptag{position:absolute;top:10px;left:10px;background:var(--blue);color:#fff;font-size:10px;font-weight:700;letter-spacing:2px;padding:4px 10px;border-radius:3px;z-index:2}
body.dark .stage-head .ch{color:#55687D}
body.dark .story-quote{color:#EDEAE3}
body.dark .story-quote i{color:#7FA1C4}
body.dark .story-serif{color:#C9C5BD}
body.dark .result-r{background:var(--blue);border-left-color:var(--blue);color:#fff}
body.dark .result-r b{color:#fff}

/* ---- 著述/视频列表（swyx 式索引行，深色页专用）---- */
.pub-list{border-top:1px solid #1D1D22;margin-top:8px}
.pub-row{display:flex;align-items:baseline;gap:18px;padding:16px 2px;border-bottom:1px solid #1D1D22;text-decoration:none}
.pub-row .t{display:block;color:#F5F2EA;font-family:Georgia,'Songti SC','SimSun',serif;font-size:16.5px;line-height:1.7;transition:color .2s}
.pub-row .k{margin-left:auto;flex:none;font-size:11px;letter-spacing:2px;color:#8FA9C6;font-weight:700;white-space:nowrap}
.pub-row .m{margin-left:auto;flex:none;font-size:12px;color:#8B8985;white-space:nowrap}
.pub-row .pl{flex:none;color:#7FA1C4;font-size:11px;letter-spacing:1px}
.pub-row:hover .t{color:#7FA1C4}
.pub-sub{font-size:12.5px;color:#8B8985;margin:2px 0 0;line-height:1.7}
.pub-more{display:inline-block;margin-top:18px;font-size:13px;color:#8FA9C6;text-decoration:none;letter-spacing:1px}
.pub-more:hover{color:#7FA1C4}
.pub-duo{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
@media(max-width:760px){.pub-duo{grid-template-columns:1fr;gap:34px}}

/* ---- 每日一条 ---- */
.daily-date{flex:none;font-family:Georgia,'Songti SC',serif;font-size:56px;font-weight:700;color:transparent;-webkit-text-stroke:1.5px #556B87;letter-spacing:1px;line-height:1}
.daily-t{font-family:Georgia,'Songti SC','SimSun',serif;font-size:21px;color:#F5F2EA;margin:10px 0 12px;line-height:1.6}
.daily-p{font-size:14px;line-height:2.1;color:#B9B6AE;margin:0;max-width:640px}
.daily-tip{font-family:Georgia,'Songti SC','SimSun',serif;font-size:14px;color:#7FA1C4;margin:12px 0 0}
@media(max-width:760px){.daily-date{font-size:38px}}
.pub-row{padding:13px 2px}

/* ---- 页脚 ---- */
footer{padding:34px 0 44px;color:var(--muted);font-size:12.5px;line-height:2}