/* ============================================================================
   中科富能 · 光伏企业宣传册案例详情页  —— 视觉方案 v3「张力 / 对比」
   ----------------------------------------------------------------------------
   设计依据（参考 hzvis.com/case/2190 的手法，非照搬其代码）：
     · 宽画布（其容器 1800px / 94%）→ 本页 1360px / 100%-56px
     · 巨型标题 90→78→67px 递减 → 本页 clamp(38px,7vw,96px)，字距 -.03em（紧）
     · 微型标签与大字号形成 10 倍级差 → 本页 10.5px 标签配 96px 主标
     · 纯黑区块 + 白字 + 58px 大字 → 本页 .band-dark / .band-ink
     · 纯黄 #ff0 作为刺眼点缀 → 本页 --acid #ffd400（只做色块，不做小字）
     · 巨字 + 紧字距 + 硬边色块 + 不协调色 → 本页「不被整合」类：.giant / .hl
       / .acid-cut / .breakout / 色板越界柱 / 硬投影
   配色仍取自画册实物内页：暖橙 #e2601a、深红 #8a1218、科技蓝、自然绿。
   约束：无第三方库、无框架、无字体外链；仅 Grid / Flex / 自定义属性。
   ============================================================================ */

:root{
  /* —— 中性 —— */
  --ink:#0a0a0b;          /* 近黑：主对比极 */
  --ink-soft:#1a1b1e;
  --paper:#f2efe7;        /* 暖纸：浅底 */
  --paper-2:#e7e1d3;      /* 深一档暖灰：浅底中的对比 */
  --white:#ffffff;
  --line:rgba(10,10,11,.14);

  /* —— 品牌（画册实物取样，饱和度上调以拉大对比） —— */
  --orange:#e2601a;       /* 亮橙：只用于大色块与大字号 */
  --orange-ink:#a83f0c;   /* 深橙：浅底小字的可读色（对比度 ≥ 5:1） */
  --acid:#ffd400;         /* 酸性黄：刺眼点缀，只做底不做字 */
  --red:#8a1218;          /* 深红：总结区满铺 */
  --red-deep:#5b0a0f;
  --blue:#14556f;
  --green:#3f7050;
  --amber:#ffc24a;        /* 暗底上的橙 */
  --silver:#a9b3ae;

  /* —— 版式 —— */
  --sans:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei UI","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --maxw:1360px;
  --gutter:28px;
  --shell:min(var(--maxw), calc(100% - (var(--gutter) * 2)));
  --bleed:max(var(--gutter), calc((100vw - var(--maxw)) / 2));

  /* —— 节奏 —— */
  --pad-y:clamp(72px,8vw,128px);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:var(--paper);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.menu-open{overflow:hidden}
img{display:block;width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit}
::selection{background:var(--acid);color:var(--ink)}

.shell{width:var(--shell);margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:60;padding:12px 18px;background:var(--acid);color:var(--ink);font-weight:700}
.br-lg{display:inline}   /* 桌面端按预设断点断行；窄屏放开自然折行 */

/* ============================================================================
   0. 阅读进度 / 跑马灯
   ============================================================================ */
.reading-progress{position:fixed;z-index:30;top:0;left:0;width:100%;height:4px;background:transparent}
.reading-progress span{display:block;height:100%;width:0;background:var(--acid)}

.ticker{overflow:hidden;background:var(--ink);border-bottom:1px solid rgba(255,255,255,.12)}
.ticker-track{display:flex;width:max-content;animation:tickermove 44s linear infinite}
.ticker-group{display:flex;align-items:center;gap:clamp(18px,2.4vw,34px);padding:10px clamp(18px,2.4vw,34px) 10px 0}
.ticker-group span{white-space:nowrap;color:rgba(255,255,255,.86);font-size:10.5px;font-weight:600;letter-spacing:.26em;text-transform:uppercase}
.ticker-group b{flex:0 0 auto;color:var(--orange);font-size:8px;font-weight:400}
@keyframes tickermove{from{transform:translate3d(0,0,0)}to{transform:translate3d(-50%,0,0)}}

/* ============================================================================
   1. 顶部导航
   ============================================================================ */
.site-header{position:sticky;z-index:20;top:0;background:rgba(242,239,231,.9);border-bottom:2px solid var(--ink);backdrop-filter:blur(12px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:70px}
.brand{display:flex;align-items:center;gap:11px;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.brand-mark{display:grid;place-items:center;width:30px;height:30px;color:var(--acid);background:var(--ink);font-size:17px;font-weight:800;line-height:1}
.brand-text em{color:var(--orange-ink);font-style:normal}
.primary-nav{display:flex;align-items:center;gap:clamp(18px,2.4vw,32px);font-size:13px;font-weight:600}
.primary-nav a{position:relative;padding:23px 0;color:#2c3436}
.primary-nav a::after{content:"";position:absolute;left:0;bottom:17px;height:2px;width:0;background:var(--orange);transition:width .22s ease}
.primary-nav a:hover::after,.primary-nav a:focus-visible::after{width:100%}
.menu-toggle{display:none;width:36px;padding:10px 3px;border:0;background:none}
.menu-toggle i{display:block;height:2px;margin:5px 0;background:var(--ink);transition:transform .22s ease}

/* ============================================================================
   2. 面包屑
   ============================================================================ */
.breadcrumb{display:flex;gap:9px;padding:16px 0;overflow:auto;color:#6f7a78;font-size:11px;letter-spacing:.06em;white-space:nowrap}
.breadcrumb a{color:#39464a}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb ol{display:flex;gap:9px;margin:0;padding:0;list-style:none}
.breadcrumb li{display:flex;gap:9px;align-items:center}
.breadcrumb li[aria-current] , .breadcrumb [aria-current="page"]{color:var(--ink);font-weight:700}

/* ============================================================================
   3. Hero —— 巨型标题 + 出血图 + 三色硬条
   ============================================================================ */
.hero{position:relative;padding:clamp(22px,3vw,48px) 0 clamp(56px,7vw,104px);background:var(--paper);overflow:hidden}
.hero::before{content:"";position:absolute;top:0;right:0;width:32%;height:100%;background:linear-gradient(180deg,var(--paper-2),transparent 70%);pointer-events:none}
.hero-side{position:absolute;z-index:1;top:50%;left:12px;margin:0;transform:translateY(-50%);writing-mode:vertical-rl;font-size:10px;font-weight:600;letter-spacing:.34em;color:rgba(10,10,11,.42);text-transform:uppercase}

/* 首屏标题占满整幅画布，尺寸悬殊最大化 */
.hero-head{position:relative;z-index:2;margin-bottom:clamp(22px,3vw,44px)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.04fr) minmax(0,.96fr);align-items:end;gap:clamp(28px,3.4vw,60px)}

h1,h2,h3,p{margin-top:0}
h1,h2,h3{font-weight:800;line-height:1.22}
.eyebrow{margin:0 0 16px;color:var(--orange-ink);font-size:10.5px;font-weight:800;letter-spacing:.26em;line-height:1.5;text-transform:uppercase}

h1{
  margin-bottom:0;
  font-size:clamp(34px,8.2vw,112px);
  line-height:.94;
  letter-spacing:-.04em;
}

/* 三色硬条：把品牌色当成图形元素，而不是文字装饰 */
.hero-bar{display:flex;height:12px;margin:clamp(22px,2.6vw,36px) 0 0}
.hero-bar i{display:block}
.hero-bar i:nth-child(1){flex:0 0 44%;background:var(--orange)}
.hero-bar i:nth-child(2){flex:0 0 14%;background:var(--acid)}
.hero-bar i:nth-child(3){flex:1 1 auto;background:var(--red)}

.hero-lead{max-width:26em;margin-bottom:24px;color:#333d3e;font-size:clamp(15px,1.15vw,18px)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.tag-row span{padding:5px 11px;border:1px solid rgba(10,10,11,.28);color:#3f4b4a;font-size:11.5px;font-weight:600;letter-spacing:.04em}
.hero-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin:0 0 30px;border-top:2px solid var(--ink)}
.hero-facts div{min-width:0;padding:14px 14px 14px 0;border-bottom:1px solid var(--line)}
.hero-facts dt{margin:0 0 4px;color:#6f7a78;font-size:10px;font-weight:700;letter-spacing:.18em;text-transform:uppercase}
.hero-facts dd{margin:0;color:var(--ink);font-size:14.5px;font-weight:800;letter-spacing:-.01em}
.text-link{display:inline-flex;align-items:center;gap:26px;padding-bottom:8px;border-bottom:2px solid var(--ink);font-size:13px;font-weight:800}
.text-link span{color:var(--orange);font-size:19px;line-height:.7}

.hero-image{position:relative;margin:0 0 0 0;margin-right:calc(-1 * var(--bleed))}
.hero-image img{
  aspect-ratio:1.472;object-fit:cover;
  box-shadow:clamp(10px,1.7vw,26px) clamp(12px,2.1vw,34px) 0 0 var(--red);
}
figcaption{margin-top:clamp(16px,2.4vw,34px);color:#6f7a78;font-size:11px;line-height:1.65}

/* ============================================================================
   4. 通用 section / 色带 / 巨型编号 / 高亮块
   ============================================================================ */
.section{position:relative;padding:var(--pad-y) 0}
.band-paper{background:var(--paper);color:var(--ink)}
.band-light{background:var(--paper-2);color:var(--ink)}
.band-white{background:var(--white);color:var(--ink)}
.band-dark{background:var(--ink);color:#f4f4f2}
.band-ink{background:#0b0d0e;color:#f4f4f2}
.band-orange{background:var(--orange);color:#180a02}
.band-acid{background:var(--acid);color:var(--ink)}

.section-heading{position:relative;display:flex;align-items:flex-end;justify-content:space-between;gap:clamp(30px,5vw,72px);margin-bottom:clamp(36px,4.4vw,66px)}
.section-heading > div{max-width:760px}
.section-heading > p{max-width:340px;margin:0 0 6px;color:#4d5856;font-size:14px;line-height:1.75}
.section-heading > div,.section-heading > p{position:relative;z-index:2}
.section-index{margin:0 0 14px;color:#7a8582;font-size:10.5px;font-weight:700;letter-spacing:.26em;text-transform:uppercase}
h2{font-size:clamp(27px,4.1vw,58px);line-height:1.06;letter-spacing:-.03em}
h3{font-size:20px;letter-spacing:-.01em}
.section-heading h2{margin:0}

/* 巨型描边编号：明确「不被整合」的元素，压在标题之下 */
.giant{
  position:absolute;z-index:0;top:-.24em;left:-.05em;
  color:transparent;
  font-size:clamp(80px,12.5vw,196px);
  font-weight:800;line-height:.72;letter-spacing:-.07em;
  -webkit-text-stroke:1.5px rgba(10,10,11,.24);
  pointer-events:none;user-select:none;
}
@supports not (-webkit-text-stroke:1px #000){ .giant{color:currentColor;opacity:.07} }
.band-dark .giant,.band-ink .giant,.summary-section .giant{-webkit-text-stroke-color:rgba(255,255,255,.3)}
.band-acid .giant,.giant-ink{-webkit-text-stroke-color:rgba(10,10,11,.42)}
.giant-light{-webkit-text-stroke-color:rgba(255,255,255,.36)}
.giant-inline{position:relative;display:block;top:0;left:0;margin:0 0 -.44em -.05em}

/* 高亮块：一块酸性黄，故意不属于页面配色系统 */
.hl{display:inline-block;padding:0 .1em;background:var(--acid);color:var(--ink);font-style:normal;transform:rotate(-1.2deg)}
.band-dark .hl,.band-ink .hl{color:var(--ink)}

.heading-light .eyebrow{color:var(--amber)}
.heading-light > p{color:#a8b2ae}
.heading-light .section-index{color:#8d9793}

/* ============================================================================
   5. 04 项目信息
   ============================================================================ */
.info-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--ink);border-bottom:1px solid var(--line)}
.info-grid dl{margin:0;padding:clamp(20px,2.4vw,32px) clamp(16px,2vw,26px) clamp(20px,2.4vw,32px) 0;border-right:1px solid var(--line)}
.info-grid dl:last-child{border-right:0}
.info-grid dt{margin:0 0 10px;color:#6f7a78;font-size:10px;font-weight:700;letter-spacing:.2em;text-transform:uppercase}
.info-grid dd{margin:0;font-size:clamp(15px,1.5vw,19px);font-weight:800;line-height:1.4;letter-spacing:-.015em}
.underline{font-style:normal;box-shadow:inset 0 -.42em 0 var(--acid)}
.info-note{margin:18px 0 0;color:#6f7a78;font-size:12px}

/* ============================================================================
   6. 05 案例背景
   ============================================================================ */
.intro-section .shell{position:relative}
.intro-section .giant{margin-bottom:-.5em}
.intro-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);gap:clamp(28px,4vw,64px);align-items:start}
.intro-grid h2{font-size:clamp(26px,4.4vw,62px)}
.intro-body{max-width:560px;color:#414c4b;font-size:15.5px}
.intro-body p + p{margin-top:20px}
.intro-body p:first-child::first-letter{float:left;margin:6px 12px 0 0;color:var(--orange);font-size:64px;font-weight:800;line-height:.78}

/* ============================================================================
   7. 06 策划 / 内容逻辑（黑带 + 黄色巨型切条）
   ============================================================================ */
#logic{padding-bottom:0}
.narrative-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:0;padding:0;list-style:none;border-top:1px solid rgba(255,255,255,.2);border-left:1px solid rgba(255,255,255,.2)}
.narrative-grid li{min-height:212px;padding:clamp(20px,2.2vw,28px);border-right:1px solid rgba(255,255,255,.2);border-bottom:1px solid rgba(255,255,255,.2);transition:background .25s ease}
.narrative-grid li:hover{background:rgba(255,255,255,.06)}
.narrative-grid span{color:var(--acid);font-size:11px;font-weight:800;letter-spacing:.22em}
.narrative-grid h3{margin:clamp(24px,3vw,46px) 0 10px;font-size:21px;color:#fff}
.narrative-grid p{margin:0;color:#b8c1bd;font-size:13px;line-height:1.78}

.acid-cut{position:relative;overflow:hidden;padding:clamp(14px,1.8vw,24px) clamp(20px,3vw,48px);background:var(--acid);color:var(--ink)}
.acid-cut span{display:block;font-size:clamp(32px,8vw,104px);font-weight:800;line-height:.88;letter-spacing:-.05em;white-space:nowrap}

/* ============================================================================
   8. 阅读方式（吸附标题 + 编号列表）
   ============================================================================ */
.two-column{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:clamp(36px,7vw,110px)}
.sticky-heading{align-self:start;position:sticky;top:104px}
.content-stack{border-top:2px solid var(--ink)}
.content-block{padding:clamp(24px,2.8vw,34px) 0;border-bottom:1px solid var(--line)}
.content-block h3{margin-bottom:12px;font-size:clamp(20px,2.1vw,26px)}
.content-block p{max-width:620px;margin-bottom:0;color:#414c4b;font-size:15px}
.parameter-note{position:relative;padding-left:26px}
.parameter-note::before{content:"";position:absolute;top:clamp(24px,2.8vw,34px);bottom:clamp(24px,2.8vw,34px);left:0;width:8px;background:var(--orange)}

/* ============================================================================
   9. 技术与质量（满铺暖橙带）
   ============================================================================ */
.technique-section .section-index{color:rgba(24,10,2,.6)}
.technique-section .eyebrow{color:rgba(24,10,2,.78)}
.visual-split{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(0,.96fr);align-items:center;gap:clamp(30px,5vw,80px)}
.feature-image{margin:0}
.feature-image img{aspect-ratio:1.472;object-fit:cover;box-shadow:clamp(8px,1.4vw,22px) clamp(10px,1.8vw,28px) 0 0 var(--ink)}
.technique-section figcaption{color:rgba(24,10,2,.68)}
.tech-copy h2{font-size:clamp(27px,3.9vw,54px)}
.tech-copy > p:not(.eyebrow):not(.section-index){max-width:470px;margin-top:22px;color:rgba(24,10,2,.86);font-size:15px}
.flow-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.flow-list span{padding:7px 11px;border:1.5px solid rgba(24,10,2,.55);color:#180a02;font-size:11.5px;font-weight:700;letter-spacing:.04em}
.flow-list span:not(:last-child)::after{content:"→";margin-left:14px;color:rgba(24,10,2,.5)}

/* ============================================================================
   10. 制造与质量控制
   ============================================================================ */
.proof-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);border:2px solid var(--ink)}
.manufacturing-card{position:relative;min-height:360px;padding:clamp(26px,3vw,42px);color:#fff;background:var(--blue);overflow:hidden}
.manufacturing-card::after{content:"";position:absolute;right:-48px;bottom:-48px;width:150px;height:150px;background:var(--acid);opacity:.16;transform:rotate(45deg)}
.manufacturing-card .section-index{color:rgba(255,255,255,.72)}
.manufacturing-card h3{max-width:340px;margin:clamp(40px,6vw,64px) 0 15px;font-size:clamp(23px,2.5vw,31px);line-height:1.24;color:#fff}
.manufacturing-card p:last-child{max-width:410px;margin:0;color:#d3e3e6;font-size:14px}
.quality-flow{display:grid;grid-template-columns:repeat(2,1fr);align-content:center;margin:0;padding:0;list-style:none;counter-reset:q}
.quality-flow li{position:relative;display:flex;align-items:center;min-height:120px;padding:20px 28px;border-bottom:1px solid var(--line);color:#25302f;font-size:15px;font-weight:800;counter-increment:q;transition:background .22s ease}
.quality-flow li:hover{background:var(--paper)}
.quality-flow li:nth-child(odd){border-right:1px solid var(--line)}
.quality-flow li::before{content:counter(q,decimal-leading-zero);margin-right:14px;color:var(--orange-ink);font-size:11px;letter-spacing:.16em}
.quality-flow li:nth-last-child(-n+2){border-bottom:0}
.evidence-note{max-width:780px;margin:22px 0 0 auto;color:#6f7a78;font-size:12px}

/* ============================================================================
   11. 应用与解决方案
   ============================================================================ */
.solution-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--line)}
.solution-grid article{min-height:272px;padding:clamp(22px,2.4vw,32px);background:var(--white);border-right:1px solid var(--line);transition:background .25s ease,transform .25s ease}
.solution-grid article:last-child{border-right:0}
.solution-grid article:nth-child(1){box-shadow:inset 0 8px 0 var(--green)}
.solution-grid article:nth-child(2){box-shadow:inset 0 8px 0 var(--orange)}
.solution-grid article:nth-child(3){box-shadow:inset 0 8px 0 var(--blue)}
.solution-grid article:hover{background:var(--paper)}
.solution-grid span{color:var(--orange-ink);font-size:10.5px;font-weight:800;letter-spacing:.2em}
.solution-grid h3{margin:clamp(34px,4vw,52px) 0 12px;font-size:clamp(21px,2.2vw,27px)}
.solution-grid p{margin:0;color:#4d5856;font-size:14px}

/* ============================================================================
   12. 服务与供应
   ============================================================================ */
.service-layout{display:grid;grid-template-columns:minmax(0,.76fr) minmax(0,1.24fr);align-items:end;gap:clamp(34px,5vw,72px)}
.service-section .section-index{color:#8d9793}
.service-section .eyebrow{color:var(--amber)}
.service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid rgba(255,255,255,.22);border-left:1px solid rgba(255,255,255,.22)}
.service-grid article{min-height:230px;padding:clamp(20px,2.2vw,28px);border-right:1px solid rgba(255,255,255,.22);border-bottom:1px solid rgba(255,255,255,.22);transition:background .25s ease}
.service-grid article:hover{background:rgba(255,255,255,.05)}
.service-grid span{color:var(--acid);font-size:11px;font-weight:800;letter-spacing:.2em}
.service-grid h3{margin:clamp(30px,4vw,44px) 0 0;color:#fff;font-size:19px;line-height:1.7}

/* ============================================================================
   13. 资料架构
   ============================================================================ */
.publication-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,1.6vw,20px)}
.publication-grid article{min-height:286px;padding:clamp(22px,2.4vw,30px);background:var(--paper);box-shadow:inset 0 8px 0 var(--green)}
.publication-grid article:nth-child(2){box-shadow:inset 0 8px 0 var(--orange)}
.publication-grid article:nth-child(3){box-shadow:inset 0 8px 0 var(--blue)}
.publication-grid span{color:#5a6866;font-size:10.5px;font-weight:800;letter-spacing:.2em}
.publication-grid h3{margin:clamp(32px,4vw,50px) 0 12px;font-size:clamp(21px,2.2vw,27px)}
.publication-grid p{margin:0;color:#4d5856;font-size:14px}
.case-template{display:grid;grid-template-columns:200px 1fr;gap:14px 34px;align-items:start;margin-top:44px;padding:26px 0;border-top:2px solid var(--ink);border-bottom:1px solid var(--line)}
.case-template > div{display:flex;flex-wrap:wrap;align-items:center;gap:8px;color:#2c4a48;font-size:13px;font-weight:800}
.case-template b{color:var(--orange);font-weight:400}
.case-template > p:last-child{grid-column:2;margin:0;color:#6f7a78;font-size:12px}

/* ============================================================================
   14. FAQ
   ============================================================================ */
.faq-grid{display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);gap:clamp(36px,7vw,110px)}
.faq-list{border-top:2px solid var(--ink)}
details{border-bottom:1px solid var(--line)}
summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;cursor:pointer;list-style:none;font-size:16px;font-weight:800}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";flex:0 0 auto;color:var(--orange);font-size:26px;font-weight:400;line-height:1}
details[open] summary::after{content:"−"}
details p{max-width:690px;margin:0;padding:0 30px 23px 0;color:#4a5554;font-size:14px}

/* ============================================================================
   15. 07 设计展示（酸性黄带 + 不等高色板 + 越界 + 硬边卡片）
   ============================================================================ */
.band-acid{padding-bottom:0}
.visual-direction-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);align-items:end;gap:clamp(28px,3.6vw,60px);margin-bottom:calc(-1 * clamp(30px,4.6vw,66px))}
.palette{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));align-items:end;height:clamp(240px,32vw,400px)}
.palette span{position:relative;display:flex;align-items:flex-end;justify-content:center;padding:12px 0 16px;color:#fff}
.palette span i{font-style:normal;font-size:11px;font-weight:700;letter-spacing:.22em;writing-mode:vertical-rl}
.palette .blue{height:58%;background:var(--blue)}
.palette .green{height:74%;background:var(--green)}
.palette .orange{height:90%;background:var(--orange)}
.palette .ink{height:106%;background:var(--ink)}
.visual-copy{padding:clamp(22px,2.6vw,34px);background:var(--white);border:2px solid var(--ink);color:#3c4746;font-size:14px}
.visual-copy p:last-child{margin-bottom:0}
.element-list{display:flex;flex-wrap:wrap;gap:7px;margin:20px 0 0;padding:0;list-style:none}
.element-list li{padding:5px 10px;border:1px solid rgba(10,10,11,.32);color:#28302f;font-size:11.5px;font-weight:600}

/* 越界巨字：被色板压住一半，形成拼贴式张力 */
.breakout{position:absolute;z-index:1;right:0;bottom:clamp(10px,2vw,28px);color:transparent;font-size:clamp(60px,13vw,180px);font-weight:800;line-height:.8;letter-spacing:-.05em;-webkit-text-stroke:2px rgba(10,10,11,.18);pointer-events:none;user-select:none}
@supports not (-webkit-text-stroke:1px #000){ .breakout{color:rgba(10,10,11,.06)} }

/* ============================================================================
   16. 08 画册展示（近黑带 + 灰阶缩略图 + 黄色序号）
   ============================================================================ */
.gallery-section{counter-reset:g}
.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(12px,1.5vw,18px)}
.gallery-item{position:relative;display:block;width:100%;margin:0;padding:0;border:0;color:inherit;background:transparent;text-align:left;cursor:zoom-in;counter-increment:g}
.gallery-item::before{content:counter(g,decimal-leading-zero);position:absolute;z-index:3;top:0;left:0;padding:6px 10px;background:var(--acid);color:var(--ink);font-size:11px;font-weight:800;letter-spacing:.1em}
/* 图片保持原始色彩：不做任何灰阶/去色处理（仅做轻微对比增强以适配深底） */
.gallery-item img{aspect-ratio:1.472;object-fit:cover;background:#1a1f20;filter:contrast(1.02) saturate(1.02);transition:filter .3s ease,transform .35s cubic-bezier(.2,.7,.2,1)}
.gallery-item:hover img,.gallery-item:focus-visible img{filter:contrast(1.06) saturate(1.06);transform:translateY(-4px)}
.gallery-item span{display:block;margin-top:10px;color:#9aa4a0;font-size:11px;line-height:1.6}
.gallery-item:focus-visible{outline:2px solid var(--acid);outline-offset:4px}

/* ============================================================================
   17. 09 项目总结（深红满铺）
   ============================================================================ */
.summary-section{position:relative;overflow:hidden;padding:clamp(72px,9vw,132px) 0;background:var(--red);color:#fff}
.summary-section::before{content:"";position:absolute;top:0;left:0;width:100%;height:10px;background:var(--acid)}
.summary-inner{position:relative;max-width:980px}
.summary-section .eyebrow{color:var(--amber)}
.summary-section h2{font-size:clamp(28px,4.6vw,64px);line-height:1.08;letter-spacing:-.03em;color:#fff}
.summary-section p:not(.eyebrow){max-width:640px;margin:26px 0 38px;color:#f0d6d8;font-size:15px}
.inverse{color:#fff;border-color:#fff}
.avoid-list{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 clamp(20px,3vw,40px);max-width:900px}
.avoid-list li{position:relative;padding:14px 0 14px 30px;border-top:1px solid rgba(255,255,255,.26);color:#f6dfe0;font-size:13.5px}
.avoid-list li::before{content:"×";position:absolute;left:0;top:11px;color:var(--acid);font-size:17px;font-weight:800;line-height:1}

/* ============================================================================
   18. 10 标签 / 11 相关案例
   ============================================================================ */
.tags-line{margin:0 0 20px;color:#3f4b4a;font-size:15px}
.tags-line b{color:var(--ink)}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.tag-list li{padding:7px 14px;background:var(--white);border:1px solid rgba(10,10,11,.2);color:#39464a;font-size:13px;font-weight:600}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(12px,1.5vw,18px)}
.related-grid article{min-height:206px;padding:clamp(20px,2.2vw,28px);background:var(--paper);box-shadow:inset 0 7px 0 var(--paper-2)}
.related-grid article:nth-child(3n+1){box-shadow:inset 0 7px 0 var(--green)}
.related-grid article:nth-child(3n+2){box-shadow:inset 0 7px 0 var(--orange)}
.related-grid article:nth-child(3n){box-shadow:inset 0 7px 0 var(--blue)}
.related-grid span{color:#6f7a78;font-size:10.5px;font-weight:700;letter-spacing:.16em}
.related-grid h3{margin:clamp(28px,3.6vw,44px) 0 10px;font-size:clamp(19px,2vw,23px)}
.related-grid p{margin:0;color:#4d5856;font-size:13px}

/* ============================================================================
   19. 12 CTA（黑带里的酸性黄硬块）
   ============================================================================ */
.cta{position:relative;overflow:hidden;padding:clamp(32px,4.6vw,68px) clamp(22px,3.6vw,56px);background:var(--acid);color:var(--ink)}
.cta::before{content:"";position:absolute;top:0;right:0;width:150px;height:100%;background:repeating-linear-gradient(-45deg,var(--ink) 0 8px,transparent 8px 22px);opacity:.14}
.cta .eyebrow{color:rgba(24,10,2,.72)}
.cta h2{color:var(--ink);font-size:clamp(26px,3.8vw,52px)}
.cta p{position:relative;max-width:520px;margin:20px 0 34px;color:rgba(24,10,2,.8);font-size:15px}
.cta-buttons{position:relative;display:flex;flex-wrap:wrap;gap:14px}
.btn{display:inline-block;min-height:50px;padding:14px 30px;border:2px solid transparent;font-size:15px;font-weight:800;line-height:1.4}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--red)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(10,10,11,.08)}

/* ============================================================================
   20. Footer / Lightbox
   ============================================================================ */
.site-footer{padding:26px 0;background:#07090a;color:#8b9491;font-size:11px}
.site-footer .shell{display:flex;justify-content:space-between;gap:20px}

.lightbox{width:min(1160px,calc(100% - 32px));max-height:calc(100% - 32px);padding:20px;color:#fff;background:#0d1213;border:2px solid var(--acid)}
.lightbox::backdrop{background:rgba(0,0,0,.86)}
.lightbox img{max-height:calc(100vh - 132px);object-fit:contain}
.lightbox p{margin:12px 0 0;color:#c6cecb;font-size:12px}
.lightbox-close{position:absolute;top:8px;right:10px;display:grid;place-items:center;width:38px;height:38px;padding:0;border:0;background:var(--acid);color:var(--ink);font-size:26px;font-weight:400;cursor:pointer}

/* ============================================================================
   21. 进入视口的显现动效（JS 不可用时默认可见）
   ============================================================================ */
.js [data-reveal]{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.js [data-reveal].is-in{opacity:1;transform:none}

/* ============================================================================
   22. 响应式
   ============================================================================ */
@media (max-width:1180px){
  .hero-image{margin-right:0}
  .hero-side{display:none}
}
@media (max-width:1000px){
  .band-acid{padding-bottom:var(--pad-y)}
  .hero-grid,.intro-grid,.visual-split,.faq-grid,.service-layout,.two-column{grid-template-columns:1fr;gap:clamp(28px,4vw,44px)}
  .hero-image{order:-1;margin-right:0}
  .sticky-heading{position:static}
  .visual-direction-grid{grid-template-columns:1fr;margin-bottom:0;gap:clamp(26px,4vw,40px)}
  .section-heading > p{max-width:560px}
  .narrative-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .narrative-grid li{min-height:186px}
  .proof-grid{grid-template-columns:1fr}
  .info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .info-grid dl:nth-child(2n){border-right:0}
  .palette{height:clamp(200px,34vw,300px)}
  .breakout{display:none}
}
@media (max-width:860px){
  :root{--gutter:20px}
  .header-inner{min-height:62px}
  .menu-toggle{display:block}
  .primary-nav{position:absolute;top:62px;left:0;display:none;width:100%;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 18px;background:var(--paper);border-bottom:2px solid var(--ink)}
  .primary-nav.is-open{display:flex}
  .primary-nav a{padding:14px 0}
  .primary-nav a::after{display:none}
  .section-heading{display:grid;grid-template-columns:1fr;gap:20px;align-items:start}
  .section-heading > p{max-width:100%}
  .giant{top:-.18em;font-size:clamp(64px,17vw,120px)}
  .solution-grid,.gallery-grid,.publication-grid,.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .solution-grid article:nth-child(2){border-right:0}
  .solution-grid article:nth-child(3){border-right:0;border-top:1px solid var(--line)}
  .publication-grid article{min-height:236px}
  .case-template{grid-template-columns:1fr;gap:12px}
  .case-template > p:last-child{grid-column:auto}
  .avoid-list{grid-template-columns:1fr}
  .cta-buttons .btn{width:100%}
  .site-footer .shell{flex-direction:column;gap:5px}
  .lightbox{padding:12px}
  .hero-facts{gap:0}
}
@media (max-width:560px){
  .br-lg{display:none}
  .ticker-group{padding-top:8px;padding-bottom:8px}
  .breadcrumb{padding:12px 0}
  .hero-head{margin-bottom:22px}
  .hero-bar{height:9px}
  h2{font-size:clamp(24px,8vw,34px)}
  .hero-lead{font-size:15px}
  .hero-facts{grid-template-columns:1fr}
  .hero-facts div{border-right:0}
  .acid-cut span{font-size:clamp(28px,11vw,52px)}
  .info-grid{grid-template-columns:1fr}
  .info-grid dl{border-right:0}
  .narrative-grid,.solution-grid,.gallery-grid,.publication-grid,.related-grid,.service-grid,.quality-flow{grid-template-columns:1fr}
  .narrative-grid li{min-height:auto}
  .quality-flow li{border-right:0}
  .quality-flow li:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .quality-flow li:last-child{border-bottom:0}
  .solution-grid article,.service-grid article{border-right:0}
  .solution-grid article:nth-child(3){border-top:0}
  .solution-grid article + article,.service-grid article + article{border-top:1px solid var(--line)}
  .service-grid article + article{border-top-color:rgba(255,255,255,.22)}
  .palette span i{writing-mode:horizontal-tb;font-size:10px;letter-spacing:.1em}
  .palette span{padding:10px 4px}
  .case-template > div{align-items:flex-start;flex-direction:column}
  .case-template b{display:none}
  .hero-side{display:none}
}

/* ============================================================================
   23. 动效与打印降级
   ============================================================================ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js [data-reveal]{opacity:1;transform:none}
  .ticker-track{transform:none}
}
@media print{
  .ticker,.reading-progress,.site-header,.lightbox,.menu-toggle,.giant,.breakout,.acid-cut,.gallery-item::before{display:none!important}
  body{background:#fff;color:#000}
  .section{padding:24px 0;break-inside:avoid}
  .gallery-item img{filter:none}
}

/* ============================================================================
   24. 批量案例页 —— 正文小节（④ 内容）
   ============================================================================ */
.doc-grid{position:relative;display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:clamp(30px,6vw,96px);align-items:start}
.doc-head{align-self:start;position:sticky;top:104px}
.doc-head h2{margin:0;font-size:clamp(23px,3.1vw,42px);line-height:1.14;letter-spacing:-.02em}
.doc-head .giant{top:-.3em;font-size:clamp(72px,10vw,150px)}
.doc-body{max-width:640px;color:#414c4b;font-size:15.5px}
.doc-body > p{margin:0 0 18px}
.doc-body > p:last-child{margin-bottom:0}
.doc-body .lead-q{margin:0 0 12px;color:var(--orange-ink);font-size:clamp(16px,1.5vw,20px);font-weight:800}
.doc-sub{margin:26px 0 0;padding:2px 0 2px 22px;border-left:5px solid var(--orange)}
.doc-sub + .doc-sub{margin-top:22px}
.doc-sub h4{margin:0 0 10px;font-size:15.5px;font-weight:800;letter-spacing:0}
.doc-sub p{margin:0 0 10px;color:#4d5856;font-size:14.5px}
.doc-sub p:last-child{margin-bottom:0}

/* 正文导语（源文首小节之前的段落）：无编号、不计入节数 */
.doc-lead-section{border-bottom:1px solid var(--line)}
.doc-lead{max-width:720px}
.doc-lead > p:first-child{font-size:clamp(17px,1.8vw,21px);line-height:1.62;font-weight:700;color:var(--ink)}
.doc-lead > p:first-child::first-letter{font-size:1.35em;line-height:1}
@media (max-width:860px){
  .doc-lead{max-width:100%}
}

.band-dark .doc-head h2,.band-ink .doc-head h2{color:#fff}
.band-dark .doc-body,.band-ink .doc-body{color:#b8c1bd}
.band-dark .doc-sub p,.band-ink .doc-sub p{color:#a8b2ae}
.band-dark .lead-q,.band-ink .lead-q{color:var(--acid)}
.band-dark .doc-sub,.band-ink .doc-sub{border-left-color:var(--acid)}
.band-orange .doc-body,.band-acid .doc-body{color:rgba(24,10,2,.88)}
.band-orange .doc-sub p,.band-acid .doc-sub p{color:rgba(24,10,2,.78)}
.band-orange .lead-q,.band-acid .lead-q{color:var(--red)}
.band-orange .doc-sub,.band-acid .doc-sub{border-left-color:rgba(10,10,11,.55)}
.band-orange .giant,.band-acid .giant,.band-white .giant,.band-light .giant{-webkit-text-stroke-color:rgba(10,10,11,.28)}

/* —— 项目背景（首字下沉 + 引文） —— */
.brief-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.14fr) minmax(0,.86fr);gap:clamp(28px,4vw,64px);align-items:start}
.brief-grid h2{font-size:clamp(26px,4.2vw,58px)}
.brief-body{max-width:580px;color:#414c4b;font-size:15.5px}
.brief-body p + p{margin-top:20px}
.brief-body p:first-child::first-letter{float:left;margin:6px 12px 0 0;color:var(--orange);font-size:62px;font-weight:800;line-height:.78}
.brief-quote{padding:clamp(20px,2.4vw,30px);background:var(--white);border:2px solid var(--ink);box-shadow:10px 12px 0 0 var(--orange)}
.brief-quote p{margin:0 0 14px;color:#2c3737;font-size:14.5px}
.brief-quote p:last-child{margin-bottom:0}
.brief-quote b{display:block;margin-bottom:10px;color:var(--orange-ink);font-size:10.5px;letter-spacing:.24em;text-transform:uppercase}

/* —— 关键词云 —— */
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin:0;padding:0;list-style:none}
.tag-cloud li{padding:8px 15px;background:var(--ink);color:#fff;font-size:13px;font-weight:700;letter-spacing:.02em}
.tag-cloud li:nth-child(4n+1){background:var(--red)}
.tag-cloud li:nth-child(4n+3){background:var(--blue)}
.tag-cloud li:nth-child(7n){background:var(--green)}

/* —— 内容架构总览（深红带 + 可跳转） —— */
.roadmap-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid rgba(255,255,255,.3);border-left:1px solid rgba(255,255,255,.3)}
.roadmap-grid a{display:block;min-height:98px;padding:18px 20px;border-right:1px solid rgba(255,255,255,.3);border-bottom:1px solid rgba(255,255,255,.3);color:#fff;font-size:14px;font-weight:700;line-height:1.45;transition:background .22s ease}
.roadmap-grid a:hover,.roadmap-grid a:focus-visible{background:rgba(255,255,255,.12)}
.roadmap-grid a b{display:block;margin-bottom:9px;color:var(--acid);font-size:11px;letter-spacing:.22em}
.roadmap-section .eyebrow{color:var(--amber)}
.roadmap-section .section-heading > p{color:#f0d6d8}
.roadmap-section .section-index{color:rgba(255,255,255,.6)}

/* —— 案例总览页 —— */
.hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,1.8vw,24px)}
.hub-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);transition:transform .25s ease,box-shadow .25s ease}
.hub-card:hover,.hub-card:focus-visible{transform:translateY(-6px);box-shadow:12px 14px 0 0 var(--orange)}
.hub-card img{aspect-ratio:1.6;object-fit:cover;background:var(--paper-2)}
.hub-body{padding:18px 20px 22px}
.hub-num{color:var(--orange-ink);font-size:11px;font-weight:800;letter-spacing:.22em}
.hub-body h3{margin:9px 0 7px;font-size:17px;line-height:1.32}
.hub-body p{margin:0;color:#6f7a78;font-size:12.5px;line-height:1.6}

/* —— 聚合页：语义列表化 + 行业筛选 + 分页 —— */
.hub-grid{padding:0;margin:0;list-style:none}
.hub-grid > li{display:flex;min-width:0}
.hub-grid > li[hidden]{display:none}      /* 必须显式声明：否则被上面的 display:flex 覆盖，筛选失效 */
.hub-grid > li > .hub-card{flex:1 1 auto;width:100%}
.hub-card[hidden]{display:none}

.hub-facts{margin:10px 0 0;display:grid;gap:3px;font-size:11.5px;line-height:1.5;color:#8b9694}
.hub-facts > div{display:flex;gap:6px;min-width:0}
.hub-facts dt{margin:0;flex:0 0 auto;font-weight:700;color:#6f7a78}
.hub-facts dt::after{content:'：'}
.hub-facts dd{margin:0;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 单页通栏：54 个案例一次展开，筛选栏吸附在导航下方，
   滚到任意位置都能换行业（已取消分页）。 */
.hub-filters{position:sticky;z-index:15;top:72px;display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0 0 clamp(14px,1.8vw,22px);padding:12px 0;list-style:none;
  background:var(--paper);border-bottom:1px solid var(--line)}
/* flex 子项是外包的 <li>，必须显式禁止收缩：否则窄屏 nowrap 时被压到 min-content，文字竖排折行 */
.hub-filters > li{flex:0 0 auto}
.hub-filter{display:inline-flex;align-items:center;gap:7px;padding:9px 14px;border:1px solid var(--line);
  background:var(--white);color:var(--ink);font:inherit;font-size:13px;font-weight:700;letter-spacing:.02em;
  cursor:pointer;transition:background .18s ease,color .18s ease,box-shadow .18s ease}
.hub-filter span{font-size:11px;font-weight:800;color:var(--orange-ink);font-variant-numeric:tabular-nums}
.hub-filter:hover{border-color:var(--ink)}
.hub-filter:focus-visible{outline:3px solid var(--orange);outline-offset:2px}
.hub-filter.is-active{background:var(--ink);color:var(--white);border-color:var(--ink);box-shadow:5px 6px 0 0 var(--acid)}
.hub-filter.is-active span{color:var(--acid)}

.hub-count{margin:0 0 16px;font-size:12.5px;letter-spacing:.04em;color:#6f7a78}
.hub-empty{padding:44px 0;text-align:center;color:#6f7a78}

/* ============================================================================
   25. 批量案例页 —— 响应式补充
   ============================================================================ */
@media (max-width:1000px){
  .doc-grid,.brief-grid{grid-template-columns:1fr;gap:clamp(24px,4vw,40px)}
  .doc-head{position:static}
  .roadmap-grid,.hub-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
/* 窄屏：吸附的筛选栏只占一行，改为横向滑动，避免占掉半屏高度 */
@media (max-width:900px){
  .hub-filters{flex-wrap:nowrap;overflow-x:auto;gap:7px;padding:10px 0;
    scrollbar-width:none;-ms-overflow-style:none}
  .hub-filters::-webkit-scrollbar{display:none}
}
@media (max-width:860px){
  .hub-filters{top:64px}      /* 与 .header-inner 的 62px + 2px 下边框对齐 */
}
@media (max-width:560px){
  .doc-head .giant{font-size:clamp(58px,18vw,110px)}
  .doc-body,.brief-body{font-size:15px}
  .roadmap-grid,.hub-grid{grid-template-columns:1fr}
  .roadmap-grid a{min-height:auto}
  .brief-quote{box-shadow:7px 9px 0 0 var(--orange)}
}
@media print{
  .hub-card:hover{box-shadow:none;transform:none}
}