/* =========================================================
   鹏权五金 · 官网样式（高端 · 大气 · 沉稳 · B2B 工业品牌站）
   深岩灰底 / 香槟金主调 / 粗壮无衬线大标题 / 大留白 / 金属拉丝+噪点纹理 / 关键数字与 CTA 微发光
   保留全部动画引擎钩子（reveal/视差/磁性按钮/玻璃/3D 转盘/拖尾）
   ========================================================= */

:root{
  /* 底色：深墨岩（更深沉，营造高端工业氛围） */
  --bg:#15171C;
  --bg-2:#101216;
  --bg-3:#1B1E25;
  /* 玻璃面：卡片背景比主背景稍亮，配极细边框 */
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.065);
  --surface-hi:rgba(255,255,255,.085);
  /* 描边：极淡高光（hairline） */
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --line-gold:rgba(212,175,55,.18);
  --silver:rgba(255,255,255,.5);
  /* 文字：纯白标题 / 浅灰正文（长时间阅读舒适） */
  --ink:#C9CDD4;            /* 正文主色 */
  --slate:#FFFFFF;          /* 标题主色（纯白） */
  --slate-2:#E6E8EC;
  --muted:#9CA3AF;          /* 副文字（浅灰） */
  --muted-2:#6B7280;
  /* 强调：香槟金 / 古铜（金属质感，克制不俗） */
  --copper:#D4AF37;
  --copper-soft:#E8C766;
  --copper-deep:#B8902A;
  --copper-grad:linear-gradient(135deg,#EFD98A,#D4AF37 55%,#B8902A);
  --steel:#8A857C;
  --ring:rgba(212,175,55,.32);
  --glow:rgba(212,175,55,.22);     /* 数字/ CTA 微发光基准（更克制） */
  --glow-soft:rgba(212,175,55,.13);
  --radius:16px;
  --radius-lg:24px;
  --maxw:1180px;
  /* 阴影：深投影 + 内高光 + 香槟金辉光 */
  --glass-shadow:0 24px 60px -30px rgba(0,0,0,.7),inset 0 1px 0 rgba(255,255,255,.05);
  --glass-shadow-lg:0 44px 120px -36px rgba(0,0,0,.8),inset 0 1px 0 rgba(255,255,255,.06);
  --glass-shadow-soft:0 20px 50px -28px rgba(212,175,55,.28),inset 0 1px 0 rgba(255,255,255,.05);
  /* 物理缓动曲线 */
  --ease:cubic-bezier(0.16,1,0.3,1);
  --ease-soft:cubic-bezier(0.22,1,0.36,1);
  --ease-liquid:cubic-bezier(0.34,1.3,0.5,1);
  --spring:cubic-bezier(0.34,1.42,0.5,1);
  /* 指针归一化坐标（immersive.js 光影跟踪实时写入，-1..1） */
  --mx:0; --my:0;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC",-apple-system,system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --serif:"Instrument Serif","Noto Serif SC","Songti SC","STSong","SimSun","Source Han Serif SC",Georgia,"Times New Roman",serif;
  /* 噪点纹理（高端哑光质感） */
  --grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}

body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;                 /* 正文行距 1.6–1.8，提升阅读体验 */
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.modal-open{overflow:hidden}

/* 固定景深辉光：香槟金 + 极淡钢蓝，营造沉静层次 */
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:
  radial-gradient(58% 48% at 12% 0%,rgba(212,175,55,.10),transparent 60%),
  radial-gradient(52% 52% at 100% 16%,rgba(60,74,90,.16),transparent 60%),
  radial-gradient(60% 60% at 50% 108%,rgba(212,175,55,.05),transparent 62%)}

/* 金属拉丝纹理 + 胶片噪点：极微弱，增加细节丰富度（高端质感） */
body::after{
  content:"";position:fixed;inset:0;z-index:9990;pointer-events:none;opacity:.06;mix-blend-mode:overlay;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,.022) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(0deg, rgba(0,0,0,.16) 0 1px, transparent 1px 4px),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")
}

a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
::selection{background:var(--copper);color:#15140C}
.gpu{will-change:transform;transform:translateZ(0);backface-visibility:hidden}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* 粗壮无衬线大标题体系 */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;letter-spacing:3px;text-transform:uppercase;
  color:var(--copper-soft);font-weight:800;margin-bottom:18px;
}
.eyebrow::before{content:"";width:30px;height:2px;background:linear-gradient(90deg,var(--copper),transparent)}
h2.section-title{
  font-family:var(--serif);
  font-size:clamp(32px,4.4vw,52px);font-weight:600;letter-spacing:-.2px;
  line-height:1.15;margin-bottom:18px;color:var(--slate);
}
.section-title .hl{color:transparent;background:var(--copper-grad);-webkit-background-clip:text;background-clip:text}
.section-title{position:relative}
.section-title::after{content:"";display:block;width:64px;height:3px;margin-top:18px;border-radius:3px;background:var(--copper-grad);box-shadow:0 0 16px var(--glow);transform:scaleX(.35);transform-origin:left;transition:transform .9s var(--ease-soft) .25s}
.section-title.reveal.in::after{transform:scaleX(1)}
.lead{color:var(--muted);max-width:62ch;font-size:16.5px;line-height:1.8}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 28px;border-radius:999px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;position:relative;overflow:hidden;
  transition:transform .45s var(--ease-liquid),box-shadow .45s var(--ease-liquid),background .35s,border-color .35s,color .35s;
  will-change:transform;
}
/* 主按钮：香槟金实底 + 深墨字 + 微发光（沉稳高端） */
.btn-primary{background:var(--copper-grad);color:#15140C;box-shadow:0 0 26px var(--glow-soft),0 12px 30px -12px rgba(184,144,42,.55)}
.btn-primary::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.45) 50%,transparent 70%);transform:translateX(-130%);transition:transform .75s var(--ease-soft);pointer-events:none}
.btn-primary:hover{box-shadow:0 0 38px var(--glow),0 22px 50px -14px rgba(184,144,42,.65);transform:translateY(-2px)}
.btn-primary:hover::before{transform:translateX(130%)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line);color:var(--slate);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:var(--copper);color:var(--copper-soft);transform:translateY(-2px);box-shadow:0 0 22px var(--glow-soft),0 14px 36px -16px rgba(184,144,42,.5)}
.btn .arrow{transition:transform .35s var(--ease)}
.btn:hover .arrow{transform:translateX(6px)}
.ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.5);transform:translate(-50%,-50%) scale(0);pointer-events:none;animation:ripple .7s var(--ease-soft) forwards}

/* ---------- Scroll progress ---------- */
.scroll-progress{position:fixed;top:0;left:0;height:3px;width:100%;background:linear-gradient(90deg,var(--copper-soft),var(--copper-deep));transform:scaleX(0);transform-origin:left;z-index:60;transition:transform .12s linear;box-shadow:0 0 14px rgba(212,175,55,.55)}

/* ---------- Cursor glow（极淡香槟微光，沉雅点缀） ---------- */
.cursor-glow{position:fixed;top:0;left:0;width:660px;height:660px;margin:-330px 0 0 -330px;border-radius:50%;background:radial-gradient(circle,rgba(240,214,140,.16),rgba(212,175,55,.07) 40%,transparent 66%);pointer-events:none;z-index:2;mix-blend-mode:screen;opacity:0;transition:opacity .5s;will-change:transform}

/* ---------- Header（居中玻璃药丸导航 · 克制） ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;justify-content:center;padding:18px 16px;pointer-events:none}
.nav-pill{pointer-events:auto;display:flex;align-items:center;gap:10px;width:100%;max-width:var(--maxw);padding:8px 10px 8px 12px;border-radius:999px;position:relative;background:linear-gradient(135deg,rgba(255,255,255,.10) 0%,transparent 30%,transparent 70%,rgba(255,255,255,.04) 100%),linear-gradient(160deg,rgba(40,43,50,.52),rgba(18,20,25,.40));border:1px solid rgba(255,255,255,.10);backdrop-filter:blur(24px) saturate(1.6);-webkit-backdrop-filter:blur(24px) saturate(1.6);box-shadow:0 20px 50px -24px rgba(0,0,0,.7),inset 0 1px 1px rgba(255,255,255,.18),inset 0 -1px 1px rgba(0,0,0,.18);transition:background .4s var(--ease),border-color .4s,box-shadow .4s}
.site-header.scrolled .nav-pill{background:linear-gradient(135deg,rgba(255,255,255,.08) 0%,transparent 30%,transparent 70%,rgba(255,255,255,.03) 100%),linear-gradient(160deg,rgba(30,32,38,.78),rgba(14,16,20,.72));border-color:rgba(212,175,55,.22);box-shadow:0 18px 50px -26px rgba(0,0,0,.85),inset 0 1px 1px rgba(255,255,255,.14)}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand .emblem{width:34px;height:34px;flex:none;filter:drop-shadow(0 4px 10px rgba(184,144,42,.3))}
.brand .emblem path.hex{transition:stroke-dashoffset 1.5s var(--ease)}
.brand .name{font-weight:800;font-size:17px;letter-spacing:1px;line-height:1;color:var(--slate);white-space:nowrap}
.brand .name small{display:block;font-size:9px;letter-spacing:2px;color:var(--muted-2);font-weight:700;margin-top:3px;font-family:var(--font)}
.nav-links{display:flex;gap:4px;align-items:center;margin-left:auto;background:rgba(255,255,255,.03);border:1px solid var(--line-soft);border-radius:999px;padding:5px}
.nav-links a{padding:8px 15px;border-radius:999px;font-size:14px;color:var(--muted);white-space:nowrap;position:relative;border:1px solid transparent;transition:color .3s var(--ease),background .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease),transform .3s var(--ease)}
.nav-links a:hover{color:var(--slate);background:linear-gradient(135deg,rgba(255,255,255,.09),rgba(255,255,255,.04));border-color:rgba(255,255,255,.12);box-shadow:inset 0 1px 0 rgba(255,255,255,.16),0 6px 18px -8px rgba(0,0,0,.55);transform:translateY(-1px)}
.nav-links a.active{color:var(--copper-soft);background:linear-gradient(135deg,rgba(212,175,55,.18),rgba(212,175,55,.08));border-color:rgba(212,175,55,.34);box-shadow:inset 0 1px 0 rgba(255,235,180,.22),0 0 22px rgba(212,175,55,.18)}
.nav-cta{margin-left:6px}
.nav-links a.nav-cta{color:#15140C;padding:9px 18px;background:var(--copper-grad);box-shadow:0 0 22px var(--glow-soft),0 10px 26px -12px rgba(184,144,42,.55)}
.nav-links a.nav-cta:hover{color:#15140C;transform:translateY(-2px)}
.lang-switch{display:inline-flex;align-items:center;gap:7px;flex:none;margin-left:4px;position:relative;z-index:5}
.lang-ico{width:17px;height:17px;color:var(--copper-soft);flex:none;opacity:.92}
.lang-select{
  font:inherit;font-size:13px;font-weight:700;line-height:1;color:var(--slate);
  appearance:none;-webkit-appearance:none;cursor:pointer;
  min-width:104px;
  padding:9px 34px 9px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.12);background-color:rgba(255,255,255,.05);
  backdrop-filter:blur(14px) saturate(1.5);-webkit-backdrop-filter:blur(14px) saturate(1.5);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 8px 22px -12px rgba(0,0,0,.5);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%23D4AF37' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 13px center;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease),color .3s var(--ease),background .3s var(--ease);
}
.lang-select:hover{border-color:rgba(212,175,55,.55);background-color:rgba(255,255,255,.08);box-shadow:inset 0 1px 0 rgba(255,240,200,.2),0 0 22px rgba(212,175,55,.16)}
.lang-select:focus-visible{outline:2px solid var(--copper);outline-offset:2px}
.lang-select option{color:#15191f;background:#ECE7DD}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--slate);transition:.3s var(--ease)}

/* ---------- Hero（深岩灰底 · 全屏 3D 金属件 + 极简光影） ---------- */
.hero{position:relative;min-height:100dvh;display:flex;align-items:center;overflow:hidden;isolation:isolate;background:radial-gradient(120% 120% at 50% 30%,#20232B 0%,#1A1C20 72%);perspective:1400px;perspective-origin:50% 42%}
.hero-video{display:none!important}
.hero3d{position:absolute;inset:0;width:100%;height:100%;z-index:0;display:block;pointer-events:none;opacity:0;transition:opacity 1.6s var(--ease-soft)}
body:not(.is-loading) .hero3d{opacity:1}
/* 香槟金极淡辉光 */
.hero::before{content:"";position:absolute;inset:0;z-index:0;background:radial-gradient(54% 46% at calc(50% + var(--mx,0)*16%) calc(40% + var(--my,0)*14%),rgba(212,175,55,.14),transparent 62%);pointer-events:none;will-change:background}
.hero-aura{position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none;transform:translate3d(calc(var(--h3x,0)*2px),calc(var(--h3y,0)*2px),80px) rotateX(calc(var(--h3y,0)*-0.8deg)) rotateY(calc(var(--h3x,0)*0.8deg));will-change:transform}
.hero-aura i{position:absolute;border-radius:50%;filter:blur(80px);opacity:.4;animation:drift 20s ease-in-out infinite;will-change:transform;transform:translateZ(0);contain:layout paint}
.hero-aura .a1{width:480px;height:480px;background:radial-gradient(circle,rgba(212,175,55,.18),transparent 70%);top:-120px;right:2%}
.hero-aura .a2{width:460px;height:460px;background:radial-gradient(circle,rgba(60,74,90,.22),transparent 70%);bottom:-150px;left:1%;animation-delay:-7s}
.hero-aura .a3{width:360px;height:360px;background:radial-gradient(circle,rgba(212,175,55,.12),transparent 70%);top:44%;left:40%;animation-delay:-12s}
.hero-photo{position:absolute;inset:-6% 0;z-index:0;pointer-events:none;
  background:url("../images/hero-parts.png") right center / clamp(52%,54vw,760px) auto no-repeat;
  opacity:.34;transform:translate3d(0,var(--py,0px),0);will-change:transform;
  -webkit-mask-image:linear-gradient(90deg,transparent 4%,#000 42%),radial-gradient(120% 120% at 82% 50%,#000 55%,transparent 92%);
  mask-image:linear-gradient(90deg,transparent 4%,#000 42%),radial-gradient(120% 120% at 82% 50%,#000 55%,transparent 92%);
  -webkit-mask-composite:source-in;mask-composite:intersect}
#forge{position:absolute;inset:0;width:100%;height:100%;z-index:1;opacity:0;mix-blend-mode:screen;pointer-events:none}
.hero-grid{position:absolute;inset:0;z-index:2;opacity:.16;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(circle at 30% 44%,#000,transparent 72%);-webkit-mask-image:radial-gradient(circle at 30% 44%,#000,transparent 72%);transform:translate3d(calc(var(--h3x,0)*0.5px),calc(var(--h3y,0)*0.5px),20px);will-change:transform}
/* 墨底渐变压暗，保证文字可读（左重右淡） */
.hero::after{content:"";position:absolute;inset:0;z-index:2;background:linear-gradient(90deg,rgba(26,28,32,.96) 4%,rgba(26,28,32,.66) 48%,rgba(26,28,32,.30) 100%),linear-gradient(180deg,rgba(26,28,32,.4),transparent 30%,rgba(26,28,32,.9));pointer-events:none}
.hero-halo{position:absolute;left:6%;top:36%;width:520px;height:520px;z-index:1;pointer-events:none}
.hero-orbit{position:absolute;right:-70px;top:50%;transform:translateY(-50%) translateZ(0);width:min(46vw,560px);aspect-ratio:1;z-index:1;opacity:.3;pointer-events:none;will-change:transform}
.hero-orbit svg{width:100%;height:100%;filter:drop-shadow(0 0 22px rgba(184,144,42,.25))}
.orbit-spin{transform-origin:200px 200px;animation:spin 42s linear infinite}
.hero .wrap{position:relative;z-index:3;max-width:920px;margin:0 auto;padding-top:0;padding-bottom:6vh;text-align:center;transform:translate3d(calc(var(--h3x,0)*1.4px),calc(var(--h3y,0)*1.4px),90px) rotateX(calc(var(--h3y,0)*-0.5deg)) rotateY(calc(var(--h3x,0)*0.5deg));will-change:transform}
.hero-tag{display:inline-flex;align-items:center;gap:10px;padding:9px 18px;border-radius:999px;background:linear-gradient(135deg,rgba(255,255,255,.10),rgba(255,255,255,.03));border:1px solid rgba(212,175,55,.42);color:var(--copper-soft);font-size:13.5px;font-weight:800;letter-spacing:1px;margin-bottom:26px;backdrop-filter:blur(16px) saturate(1.5);-webkit-backdrop-filter:blur(16px) saturate(1.5);box-shadow:inset 0 1px 0 rgba(255,240,200,.24),0 0 28px var(--glow-soft),0 12px 30px -16px rgba(0,0,0,.65)}
.hero-tag .dot{width:8px;height:8px;border-radius:50%;background:var(--copper-soft);box-shadow:0 0 0 0 rgba(232,199,102,.5);animation:pulse 2.4s infinite}
.hero-title{font-family:var(--serif);font-size:clamp(44px,7.2vw,92px);font-weight:600;line-height:1.1;letter-spacing:-.3px;margin:0 auto 24px;max-width:16ch;color:var(--slate);text-shadow:0 2px 34px rgba(0,0,0,.55)}
.hero-title .line{display:block}
.hero-title .line.hl{color:transparent;background:var(--copper-grad);-webkit-background-clip:text;background-clip:text;filter:drop-shadow(0 6px 24px rgba(184,144,42,.35))}
.hero-title .char{display:inline-block;transform:translateY(.95em) rotate(3deg);opacity:0;transition:transform .8s var(--ease-soft),opacity .8s var(--ease-soft);transition-delay:calc(var(--i,0)*.035s)}
.hero-title.in .char{transform:none;opacity:1}
.hero-title .char.space{width:.32em}
.hero p.sub{font-size:clamp(16px,2vw,19px);color:var(--muted);max-width:52ch;margin:0 auto 38px;line-height:1.8}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.hero-stats{display:flex;gap:38px;margin-top:56px;flex-wrap:wrap;justify-content:center;border-top:1px solid var(--line-soft);padding-top:30px}
.hero-stats .hs{border-left:2px solid var(--copper);padding-left:14px;position:relative}
.hero-stats .hs b{display:block;font-size:30px;font-weight:800;letter-spacing:-.5px;color:var(--slate);font-family:var(--font);text-shadow:0 0 24px rgba(212,175,55,.30)}
.hero-stats .hs span{font-size:13px;color:var(--muted-2);letter-spacing:1px}
.scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:3;color:var(--muted-2);font-size:12px;letter-spacing:2px;display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-cue .mouse{width:22px;height:34px;border:2px solid var(--muted-2);border-radius:12px;position:relative}
.scroll-cue .mouse::after{content:"";position:absolute;top:6px;left:50%;transform:translateX(-50%);width:3px;height:7px;border-radius:2px;background:var(--copper-soft);animation:wheel 1.8s infinite}

.hero-tag,.hero p.sub,.hero-actions,.hero-stats{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease-soft),transform 1s var(--ease-soft);will-change:transform,opacity}
body:not(.is-loading) .hero-tag{opacity:1;transform:none;transition-delay:.15s}
body:not(.is-loading) .hero p.sub{opacity:1;transform:none;transition-delay:.3s}
body:not(.is-loading) .hero-actions{opacity:1;transform:none;transition-delay:.45s}
body:not(.is-loading) .hero-stats{opacity:1;transform:none;transition-delay:.6s}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(42px) scale(.985);will-change:transform,opacity;transition:opacity .9s var(--ease-soft),transform .9s var(--ease-soft)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
.reveal-img{opacity:0;clip-path:inset(0 0 100% 0);will-change:transform,opacity;transition:clip-path 1.15s var(--ease-soft),opacity 1s var(--ease-soft)}
.reveal-img.in{opacity:1;clip-path:inset(0 0 0 0)}

/* ---------- Marquee ---------- */
.marquee{border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);background:rgba(255,255,255,.02);overflow:hidden;padding:18px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;gap:48px;white-space:nowrap;animation:scroll-left 30s linear infinite;width:max-content}
.marquee-track span{font-size:15px;letter-spacing:2px;color:#C9CDD4;display:inline-flex;align-items:center;gap:12px}
.marquee-track span::before{content:"";width:7px;height:7px;background:var(--copper-soft);border-radius:2px;transform:rotate(45deg);box-shadow:0 0 10px rgba(232,199,102,.5)}
.marquee:hover .marquee-track{animation-play-state:paused}

/* ---------- Stats band ---------- */
.stats-band{padding:90px 0;background:linear-gradient(180deg,var(--bg),var(--bg-2))}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{padding:34px 26px;border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--surface);position:relative;overflow:hidden;contain:layout;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:transform .5s var(--ease),border-color .5s,box-shadow .5s var(--ease)}
.stat:hover{transform:translateY(-6px);border-color:rgba(212,175,55,.4);box-shadow:var(--glass-shadow)}
.stat::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--copper),transparent);transform:scaleX(.4);transform-origin:left;transition:transform .6s var(--ease)}
.stat.in::before{transform:scaleX(1)}
.stat .num{font-family:var(--font);font-size:clamp(34px,4vw,52px);font-weight:800;letter-spacing:-1px;line-height:1;background:linear-gradient(180deg,#FFFFFF,#9CA3AF);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 18px rgba(212,175,55,.30))}
.stat .num .suffix{font-size:.5em;color:var(--muted);margin-left:4px;font-family:var(--font);filter:none}
.stat .label{margin-top:10px;color:var(--muted);font-size:14.5px}

/* ---------- Sections ---------- */
section.block{padding:120px 0;content-visibility:auto;contain-intrinsic-size:auto 820px;position:relative}
section.block + section.block::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--line-soft) 18%,rgba(212,175,55,.18) 50%,var(--line-soft) 82%,transparent)}
.section-head{margin-bottom:64px;max-width:760px}

/* About */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.about-copy p{color:var(--muted);margin-bottom:18px;font-size:16px;line-height:1.8}
.about-copy strong{color:var(--slate);font-weight:800}
.about-facts{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:30px}
.fact{border:1px solid var(--line-soft);border-radius:14px;padding:16px 18px;background:var(--surface);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);will-change:transform;transition:transform .4s var(--ease),border-color .4s,box-shadow .4s}
.fact:hover{transform:translateY(-4px);border-color:rgba(212,175,55,.42);box-shadow:0 20px 48px -24px rgba(184,144,42,.45),inset 0 1px 0 rgba(255,255,255,.08)}
.fact .k{font-size:12px;letter-spacing:1.5px;color:var(--muted-2);text-transform:uppercase}
.fact .v{font-size:16px;font-weight:800;margin-top:6px;color:var(--slate)}
.about-visual{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);min-height:400px;background:#0e1117;box-shadow:var(--glass-shadow)}
.about-visual .pv{position:absolute;left:0;right:0;top:-18%;bottom:-18%;background:url("../images/workshop.png") center / cover no-repeat;will-change:transform;transform:translate3d(0,var(--py,0px),0) rotateX(var(--sy,0deg)) rotateY(var(--rx,0deg)) scale(1.06);z-index:0}
.about-visual::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(26,28,32,.15),rgba(26,28,32,.45))}
.about-visual::after{content:"";position:absolute;inset:0;z-index:1;background:radial-gradient(circle at 50% 40%,rgba(212,175,55,.18),transparent 60%);opacity:0;transition:opacity .6s}
.about-visual:hover::after{opacity:1}
.about-visual .vcap{position:absolute;left:22px;bottom:20px;z-index:2;color:#fff;font-weight:700;font-size:14.5px;letter-spacing:.5px;text-shadow:0 2px 12px rgba(0,0,0,.6);display:flex;align-items:center;gap:9px}
.about-visual .vcap::before{content:"";width:9px;height:9px;border-radius:2px;background:var(--copper-soft);transform:rotate(45deg);box-shadow:0 0 10px rgba(232,199,102,.6)}
.spin-slow{animation:spin 26s linear infinite;transform-origin:center}
.float-y{animation:floaty 6s ease-in-out infinite}

/* ---------- Products ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.pcard{position:relative;border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--surface);padding:28px 24px;overflow:hidden;contain:layout;will-change:transform;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:transform .5s var(--ease),border-color .5s,box-shadow .5s,opacity .5s var(--ease)}
.pcard::before{content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1px;background:linear-gradient(135deg,var(--copper),transparent 55%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .5s;pointer-events:none}
.pcard::after{content:"";position:absolute;inset:0;border-radius:var(--radius);background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(212,175,55,.12),transparent 45%);opacity:0;transition:opacity .45s;pointer-events:none}
.pcard:hover{transform:translateY(-10px);border-color:rgba(212,175,55,.5);box-shadow:var(--glass-shadow)}
.pcard:hover::before{opacity:1}
.pcard:hover::after{opacity:1}
.pcard .ico{width:84px;height:84px;margin-bottom:20px;transition:transform .5s var(--ease)}
.pcard:hover .ico{transform:translateY(-4px) scale(1.06)}
.pcard h3{font-size:19px;font-weight:800;margin-bottom:10px;color:var(--slate)}
.pcard p{color:var(--muted);font-size:14.5px;line-height:1.8}
.pcard .tag{position:absolute;top:18px;right:18px;font-size:11px;letter-spacing:1.5px;color:var(--copper-soft);border:1px solid rgba(212,175,55,.32);padding:4px 10px;border-radius:999px;background:rgba(212,175,55,.07)}
@media (hover:hover){
.cards:has(.pcard:hover) .pcard:not(:hover){opacity:.55;transform:scale(.972)}
.steps:has(.step:hover) .step:not(:hover){opacity:.55;transform:scale(.985)}
.bento:has(.cell:hover) .cell:not(:hover){opacity:.55;transform:scale(.972)}
}

/* ---------- Process ---------- */
.process{background:var(--bg-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;counter-reset:step;position:relative}
.steps .rail{position:absolute;top:30px;left:9%;right:9%;height:2px;background:linear-gradient(90deg,transparent,var(--copper),transparent);transform:scaleX(0);transform-origin:left;transition:transform 1.3s var(--ease);box-shadow:0 0 12px rgba(184,144,42,.3)}
.steps.drawn .rail{transform:scaleX(1)}
.step{padding:34px 22px;position:relative;border-right:1px solid var(--line-soft);contain:layout;will-change:transform;transition:transform .45s var(--ease),opacity .45s var(--ease)}
.step:last-child{border-right:0}
.step:hover{transform:translateY(-6px);box-shadow:var(--glass-shadow)}
.step .n{counter-increment:step;font-size:13px;color:var(--copper-soft);letter-spacing:2px;font-weight:800;position:relative;z-index:2}
.step .n::before{content:"0" counter(step)}
.step .ic{width:46px;height:46px;margin:16px 0;color:var(--copper-soft);transition:transform .5s var(--ease)}
.step:hover .ic{transform:scale(1.12) rotate(-4deg)}
.step h4{font-size:17px;font-weight:800;margin-bottom:8px;color:var(--slate)}
.step p{color:var(--muted);font-size:14px;line-height:1.8}
.step::after{content:"";position:absolute;left:22px;bottom:0;width:0;height:3px;background:var(--copper);transition:width .5s var(--ease);box-shadow:0 0 10px rgba(184,144,42,.4)}
.step:hover::after{width:calc(100% - 44px)}

/* ---------- Advantages (bento) ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);grid-auto-rows:200px;gap:18px}
.cell{border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--surface);padding:28px;position:relative;overflow:hidden;contain:layout;will-change:transform;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:transform .5s var(--ease),border-color .5s,opacity .5s var(--ease),box-shadow .5s var(--ease)}
.cell:hover{transform:translateY(-6px);border-color:rgba(212,175,55,.5);box-shadow:0 26px 62px -28px rgba(184,144,42,.5),inset 0 1px 0 rgba(255,255,255,.08)}
.cell h3{font-size:20px;font-weight:800;margin-bottom:10px;color:var(--slate)}
.cell p{color:var(--muted);font-size:14.5px;line-height:1.8}
.cell .big{font-family:var(--font);font-size:clamp(40px,5vw,60px);font-weight:800;color:var(--copper-soft);letter-spacing:-1px;line-height:1;filter:drop-shadow(0 0 20px rgba(212,175,55,.32))}
.cell .ic{width:44px;height:44px;color:var(--copper-soft);margin-bottom:16px;transition:transform .5s var(--ease)}
.cell:hover .ic{transform:translateY(-4px) scale(1.06)}
.c-wide{grid-column:span 3}.c-mid{grid-column:span 3}.c-sm{grid-column:span 2}
.cell.hero-cell{background:linear-gradient(135deg,#23262E,#1A1C20);border-color:rgba(212,175,55,.28);color:#fff}
.cell.hero-cell h3{color:#fff}
.cell.hero-cell p{color:#C9CDD4}
.cell.hero-cell .glow{position:absolute;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(212,175,55,.32),transparent 70%);top:-80px;right:-60px;filter:blur(10px);animation:pulse-glow 5s ease-in-out infinite}

/* ---------- Clickable (interrupt-open affordance) ---------- */
.clickable{cursor:pointer;outline:none;touch-action:manipulation}
.btn,.nav-links a,.burger{cursor:pointer;touch-action:manipulation}
.clickable.pressed{box-shadow:0 0 0 2px rgba(212,175,55,.5),0 18px 44px -22px rgba(184,144,42,.5);border-color:rgba(212,175,55,.6)}
.clickable:focus-visible{box-shadow:0 0 0 3px rgba(212,175,55,.5),0 0 0 6px rgba(212,175,55,.16)}
.peek{position:absolute;right:18px;bottom:18px;display:inline-flex;align-items:center;gap:6px;font-size:12.5px;letter-spacing:1px;color:var(--copper-soft);background:rgba(212,175,55,.1);border:1px solid rgba(212,175,55,.28);padding:6px 12px;border-radius:999px;opacity:0;transform:translateY(10px);transition:opacity .4s var(--ease),transform .4s var(--ease);pointer-events:none}
.clickable:hover .peek{opacity:1;transform:none}
.peek svg{width:14px;height:14px;transition:transform .4s var(--ease)}
.clickable:hover .peek svg{transform:translateX(4px)}

/* ---------- Modal / 打断式详情面板 ---------- */
.modal{position:fixed;inset:0;z-index:100;display:none}
.modal.open,.modal.closing{display:block}
.modal-surface{position:absolute;inset:0;clip-path:circle(0% at var(--ox,50%) var(--oy,50%));transition:clip-path .72s cubic-bezier(.76,0,.24,1);will-change:clip-path}
.modal.shown .modal-surface{clip-path:circle(150% at var(--ox,50%) var(--oy,50%))}
.modal-scrim{position:absolute;inset:0;background:rgba(5,7,11,.5);opacity:0;transition:opacity .6s var(--ease)}
.modal-scrim::before{content:"";position:absolute;inset:0;opacity:0;transition:opacity .6s var(--ease);backdrop-filter:blur(32px) saturate(1.2);-webkit-backdrop-filter:blur(32px) saturate(1.2)}
.modal.shown .modal-scrim{opacity:1}
.modal.shown .modal-scrim::before{opacity:1}
.modal.closing .modal-scrim{opacity:0;transition:opacity .3s var(--ease)}
.modal.closing .modal-scrim::before{opacity:0;transition:opacity .3s var(--ease)}
.modal-card{position:absolute;inset:0;overflow-y:auto;overflow-x:hidden;background:linear-gradient(160deg,#20232B,#15171C);border-left:1px solid rgba(212,175,55,.18);box-shadow:var(--glass-shadow-lg);-webkit-overflow-scrolling:touch;touch-action:pan-y}
.modal-card::-webkit-scrollbar{width:10px}
.modal-card::-webkit-scrollbar-thumb{background:rgba(212,175,55,.34);border-radius:10px;border:3px solid transparent;background-clip:content-box}
.modal-card::-webkit-scrollbar-thumb:hover{background:rgba(212,175,55,.55);background-clip:content-box}
.modal-card::-webkit-scrollbar-track{background:transparent}
.modal-inner{max-width:980px;margin:0 auto;padding:clamp(48px,9vh,110px) 28px clamp(60px,8vh,90px);opacity:0;transform:translateY(36px) scale(.94);transition:opacity .55s var(--ease) .2s,transform .65s var(--ease-soft) .2s}
.modal.shown .modal-inner{opacity:1;transform:none}
.m-mark{width:64px;height:64px;margin-bottom:22px;filter:drop-shadow(0 8px 22px rgba(184,144,42,.4));opacity:0;transform:translateY(14px) scale(.92);transition:opacity .55s var(--ease) .22s,transform .6s var(--ease-soft) .22s}
.modal.shown .m-mark{opacity:1;transform:none;animation:mark-float 6s ease-in-out 1s infinite}
@keyframes mark-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.modal-eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;letter-spacing:3px;text-transform:uppercase;color:var(--copper-soft);font-weight:800;margin-bottom:18px;opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease) .28s,transform .5s var(--ease) .28s}
.modal-eyebrow::before{content:"";width:30px;height:2px;background:linear-gradient(90deg,var(--copper),transparent)}
.modal.shown .modal-eyebrow{opacity:1;transform:none}
.modal-title{font-family:var(--serif);font-size:clamp(32px,5.6vw,60px);font-weight:600;letter-spacing:-.2px;line-height:1.15;margin-bottom:18px;color:var(--slate);opacity:0;transform:translateY(18px) scale(.96);transition:opacity .55s var(--ease) .34s,transform .6s var(--ease-soft) .34s}
.modal.shown .modal-title{opacity:1;transform:none}
.modal-desc{color:var(--muted);font-size:18px;max-width:64ch;margin-bottom:40px;line-height:1.8;opacity:0;transform:translateY(18px);transition:opacity .55s var(--ease) .4s,transform .6s var(--ease-soft) .4s}
.modal.shown .modal-desc{opacity:1;transform:none}
.m-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;opacity:0;transform:translateY(20px);transition:opacity .55s var(--ease) .46s,transform .6s var(--ease-soft) .46s}
.modal.shown .m-grid{opacity:1;transform:none}
.m-feats h4,.m-specs h4{font-size:14px;letter-spacing:2px;text-transform:uppercase;color:var(--copper-soft);margin-bottom:18px}
.m-feats ul{list-style:none;display:flex;flex-direction:column;gap:14px}
.m-feats li{position:relative;padding-left:30px;color:var(--ink);font-size:16px;line-height:1.6;opacity:0;transform:translateX(-14px);transition:opacity .5s var(--ease),transform .5s var(--ease-soft)}
.modal.shown .m-feats li{opacity:1;transform:none}
.modal.shown .m-feats li:nth-child(1){transition-delay:.5s}
.modal.shown .m-feats li:nth-child(2){transition-delay:.56s}
.modal.shown .m-feats li:nth-child(3){transition-delay:.62s}
.modal.shown .m-feats li:nth-child(4){transition-delay:.68s}
.m-feats li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:4px;background:var(--copper-grad);box-shadow:0 4px 12px rgba(184,144,42,.4);transform:rotate(45deg)}
.m-specs dl{display:grid;grid-template-columns:auto 1fr;gap:0;border:1px solid var(--line-soft);border-radius:14px;overflow:hidden;background:var(--surface)}
.m-specs .row{display:contents}
.m-specs dt{padding:14px 18px;border-bottom:1px solid var(--line-soft);color:var(--muted-2);font-size:14px;letter-spacing:.5px}
.m-specs dd{padding:14px 18px;border-bottom:1px solid var(--line-soft);color:var(--slate);font-size:14.5px;font-weight:800;text-align:right}
.m-specs .row:last-child dt,.m-specs .row:last-child dd{border-bottom:0}
.modal-close{position:fixed;top:22px;right:26px;width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:rgba(26,28,32,.85);backdrop-filter:blur(10px);color:var(--copper-soft);display:grid;place-items:center;cursor:pointer;z-index:2;opacity:0;transition:transform .35s var(--ease),border-color .35s,background .35s,opacity .4s var(--ease) .3s}
.modal.shown .modal-close{opacity:1}
.modal-close:hover{transform:rotate(90deg);border-color:var(--copper);background:rgba(212,175,55,.12)}
.modal-close svg{width:22px;height:22px}
.modal.closing .modal-inner,.modal.closing .modal-eyebrow,.modal.closing .modal-title,.modal.closing .modal-desc,.modal.closing .m-grid,.modal.closing .m-feats li{opacity:0;transform:translateY(12px);transition:opacity .25s var(--ease),transform .25s var(--ease)}
.modal.closing .modal-close{opacity:0;transition:opacity .25s var(--ease)}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px}
.form{display:flex;flex-direction:column;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13.5px;color:var(--muted);letter-spacing:.5px;font-weight:700}
.field input,.field textarea{background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:var(--ink);font-family:inherit;font-size:15px;transition:border-color .25s,box-shadow .25s;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.field input::placeholder,.field textarea::placeholder{color:var(--muted-2)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--copper);box-shadow:0 0 0 3px rgba(212,175,55,.15)}
.field.error input,.field.error textarea{border-color:#ff5a45}
.field .err{font-size:12.5px;color:#ff7a6b;height:0;opacity:0;transition:.25s}
.field.error .err{height:auto;opacity:1}
.form .btn-primary{justify-content:center;margin-top:6px}
.form .ok{display:flex;align-items:center;gap:10px;padding:0 16px;max-height:0;opacity:0;overflow:hidden;border-radius:12px;background:rgba(46,140,74,.12);border:1px solid transparent;color:#5fd08a;font-size:14.5px;transition:max-height .5s var(--ease),opacity .4s var(--ease),padding .5s var(--ease),border-color .5s var(--ease),margin .45s var(--ease)}
.form.sent .ok{max-height:64px;opacity:1;padding:14px 16px;border-color:rgba(46,140,74,.4);margin-top:4px}
.form .fail{display:flex;align-items:center;gap:10px;padding:0 16px;max-height:0;opacity:0;overflow:hidden;border-radius:12px;background:rgba(224,75,58,.12);border:1px solid transparent;color:#ff7a6b;font-size:14.5px;transition:max-height .5s var(--ease),opacity .4s var(--ease),padding .5s var(--ease),border-color .5s var(--ease),margin .45s var(--ease)}
.form.send-error .fail{max-height:64px;opacity:1;padding:14px 16px;border-color:rgba(224,75,58,.4);margin-top:4px}
.form .btn-primary.sending{opacity:.7;cursor:wait}
.form .btn-primary.send-error{background:linear-gradient(135deg,#e04b3a,#b8301f);color:#fff}
.form .btn-primary{transition:transform .4s var(--ease),box-shadow .4s var(--ease),background .4s,border-color .4s,color .4s}
.form .btn-primary.sent{background:linear-gradient(135deg,#43b56a,#2e8c4a);color:#fff;box-shadow:0 10px 30px -10px rgba(46,140,74,.5)}
.contact-info .ci{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line-soft);transition:transform .4s var(--ease)}
.contact-info .ci:hover{transform:translateX(6px)}
.contact-info .ci:last-child{border-bottom:0}
.contact-info .ci .ic{width:40px;height:40px;flex:none;color:var(--copper-soft)}
.contact-info .ci .k{font-size:12.5px;color:var(--muted-2);letter-spacing:1px;text-transform:uppercase}
.contact-info .ci .v{font-size:16px;font-weight:800;margin-top:3px;color:var(--slate)}
.contact-info .ci .v a{color:var(--copper-soft);text-decoration:none;border-bottom:1px solid rgba(212,175,55,.28);transition:color .3s var(--ease),border-color .3s var(--ease)}
.contact-info .ci .v a:hover{color:var(--copper);border-color:var(--copper)}

/* ---------- Footer ---------- */
.site-footer{background:#0e0f12;color:#C2C2BA;border-top:1px solid var(--line-soft);padding:60px 0 30px;content-visibility:auto;contain-intrinsic-size:auto 520px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:40px}
.site-footer .name{font-family:var(--font);font-size:20px;font-weight:800;margin:14px 0 10px;color:#fff}
.site-footer p{color:#8A857C;font-size:14.5px;max-width:42ch;line-height:1.8}
.foot-col h5{font-size:13px;letter-spacing:2px;color:#7A756A;text-transform:uppercase;margin-bottom:16px}
.foot-col a{display:block;color:#A9A294;padding:7px 0;transition:color .25s,transform .25s}
.foot-col a:hover{color:var(--copper-soft);transform:translateX(4px)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#7A756A;font-size:13px}

/* ---------- Back to top ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:50px;height:50px;border-radius:50%;border:1px solid var(--line);background:rgba(26,28,32,.9);backdrop-filter:blur(10px);color:var(--copper-soft);display:grid;place-items:center;cursor:pointer;opacity:0;transform:translateY(20px) scale(.8);pointer-events:none;transition:.45s var(--ease);z-index:45;box-shadow:0 10px 30px -14px rgba(0,0,0,.7)}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:var(--copper);box-shadow:0 0 0 5px rgba(212,175,55,.12);transform:translateY(-3px)}
.to-top svg{width:20px;height:20px}

/* =========================================================
   信任背书 / 品牌故事 / 转化增强（深岩灰 · 香槟金）
   ========================================================= */

/* ---------- 信任背书 Trust ---------- */
.trust{background:var(--bg-3);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:56px}
.cert{display:flex;align-items:center;gap:16px;padding:22px 22px;border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--surface);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:transform .5s var(--ease),border-color .5s,box-shadow .5s var(--ease)}
.cert:hover{transform:translateY(-6px);border-color:rgba(212,175,55,.4);box-shadow:var(--glass-shadow)}
.cert .badge{width:52px;height:52px;flex:none;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(212,175,55,.14),rgba(60,74,90,.1));color:var(--copper-soft);border:1px solid var(--line)}
.cert .badge svg{width:28px;height:28px}
.cert .ct{font-size:16px;font-weight:800;color:var(--slate)}
.cert .cd{font-size:12.5px;color:var(--muted-2);margin-top:3px}

.trust-cases{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:54px}
.tcase{padding:28px 26px;border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--surface);position:relative;overflow:hidden;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .5s}
.tcase:hover{transform:translateY(-6px);box-shadow:var(--glass-shadow);border-color:rgba(212,175,55,.35)}
.tcase .tind{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--copper-soft);font-weight:800;margin-bottom:14px}
.tcase .tbig{font-family:var(--font);font-size:38px;font-weight:800;color:var(--slate);line-height:1;letter-spacing:-.5px;filter:drop-shadow(0 0 18px rgba(212,175,55,.30))}
.tcase .tbig .suffix{font-size:.5em;color:var(--muted);margin-left:4px;font-family:var(--font);filter:none}
.tcase p{color:var(--muted);font-size:14px;margin-top:12px;line-height:1.8}

.logo-wall-title{text-align:center;color:var(--muted-2);font-size:13px;letter-spacing:3px;text-transform:uppercase;margin-bottom:26px}
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.lw{height:74px;border:1px solid var(--line-soft);border-radius:14px;background:var(--surface);display:grid;place-items:center;color:var(--slate);font-weight:800;font-size:15px;letter-spacing:.5px;filter:grayscale(1);opacity:.72;transition:filter .4s var(--ease),opacity .4s var(--ease),transform .4s var(--ease),border-color .4s,box-shadow .4s}
.lw:hover{filter:none;opacity:1;transform:translateY(-4px);border-color:rgba(212,175,55,.35);box-shadow:var(--glass-shadow)}

/* ---------- 品牌故事 Story ---------- */
.story{background:var(--bg-2)}
.story-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:56px;align-items:center}
.story-visual{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);min-height:460px;background:#0e1117;box-shadow:var(--glass-shadow)}
.story-visual .pv{position:absolute;left:0;right:0;top:-18%;bottom:-18%;background:url("../images/diaolou.png") center / cover no-repeat;will-change:transform;transform:translate3d(0,var(--py,0px),0) rotateX(var(--sy,0deg)) rotateY(var(--rx,0deg)) scale(1.06);z-index:0}
.story-visual::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(26,28,32,.2) 45%,rgba(26,28,32,.62));pointer-events:none}
.story-visual .scap{position:absolute;left:24px;bottom:22px;z-index:2;color:#fff}
.story-visual .scap b{font-family:var(--font);font-size:19px;font-weight:800;display:block;margin-bottom:4px}
.story-visual .scap span{font-size:13px;color:#e4d9c6;letter-spacing:1px}
.story-copy p{color:var(--muted);font-size:16px;margin-bottom:18px;line-height:1.8}
.story-copy strong{color:var(--slate);font-weight:800}
.timeline{margin-top:30px;border-left:2px solid var(--line);padding-left:26px;display:flex;flex-direction:column;gap:22px}
.tl{position:relative}
.tl::before{content:"";position:absolute;left:-33px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--copper);box-shadow:0 0 0 4px rgba(212,175,55,.16),0 0 16px rgba(212,175,55,.4)}
.tl .ty{font-family:var(--font);font-size:17px;font-weight:800;color:var(--copper-soft);filter:drop-shadow(0 0 14px rgba(212,175,55,.3))}
.tl .tt{font-size:15px;color:var(--ink);margin-top:3px;line-height:1.7}

/* ---------- Contact 影像装饰卡 ---------- */
.contact-scene{margin-top:22px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);min-height:180px;background:#0e1117;position:relative}
.contact-scene .pv{position:absolute;left:0;right:0;top:-18%;bottom:-18%;background:url("../images/product-scene.png") center / cover no-repeat;will-change:transform;transform:translate3d(0,var(--py,0px),0) rotateX(var(--sy,0deg)) rotateY(var(--rx,0deg)) scale(1.06);z-index:0}
.contact-scene::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(26,28,32,.15),rgba(26,28,32,.5))}
.contact-scene .csc{position:absolute;left:20px;bottom:16px;z-index:2;color:#fff;font-weight:700;font-size:14px;text-shadow:0 2px 10px rgba(0,0,0,.6)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.faq{border:1px solid var(--line-soft);border-radius:14px;background:var(--surface);padding:20px 22px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:border-color .4s,box-shadow .4s var(--ease),transform .4s var(--ease)}
.faq:hover{border-color:rgba(212,175,55,.32);box-shadow:var(--glass-shadow)}
.faq .q{font-weight:800;color:var(--slate);font-size:15.5px;display:flex;gap:10px;align-items:flex-start}
.faq .q::before{content:"Q";flex:none;width:22px;height:22px;border-radius:6px;background:rgba(212,175,55,.12);color:var(--copper-soft);font-size:13px;display:grid;place-items:center;margin-top:1px}
.faq .a{color:var(--muted);font-size:14px;margin-top:10px;line-height:1.8;padding-left:32px}

/* ---------- 转化增强：移动端固定咨询条 + PC 悬浮客服 ---------- */
.mbar{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;grid-template-columns:1fr 1fr 1fr;gap:10px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:rgba(26,28,32,.92);backdrop-filter:blur(16px);border-top:1px solid var(--line);box-shadow:0 -10px 30px -18px rgba(0,0,0,.8)}
.mbar a{display:flex;align-items:center;justify-content:center;gap:8px;height:46px;border-radius:12px;font-weight:800;font-size:15px}
.mbar .m-call{background:rgba(255,255,255,.06);color:var(--slate);border:1px solid var(--line)}
.mbar .m-quote{background:var(--copper-grad);color:#15140C;box-shadow:0 0 22px var(--glow-soft)}
.mbar .m-wa{background:#25D366;color:#06301a;border:1px solid rgba(0,0,0,.08)}
.mbar svg{width:18px;height:18px}

.fab{position:fixed;right:24px;bottom:86px;z-index:46;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.fab-btn{display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 20px 0 16px;border-radius:999px;background:var(--copper-grad);color:#15140C;font-weight:800;font-size:14.5px;border:0;cursor:pointer;box-shadow:0 0 26px var(--glow-soft),0 16px 34px -14px rgba(184,144,42,.6);transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
.fab-btn:hover{transform:translateY(-3px);box-shadow:0 0 40px var(--glow),0 22px 44px -14px rgba(184,144,42,.75)}
.fab-btn svg{width:20px;height:20px}
.fab-btn.alt{background:var(--surface);color:var(--slate);border:1px solid var(--line);box-shadow:var(--glass-shadow)}
.fab-btn.fab-wa{background:#25D366;color:#fff;box-shadow:0 0 26px rgba(37,211,102,.35),0 16px 34px -14px rgba(37,211,102,.55)}
.fab-btn.fab-wa:hover{transform:translateY(-3px);box-shadow:0 0 40px rgba(37,211,102,.5),0 22px 44px -14px rgba(37,211,102,.7)}

/* ---------- Preloader (signature entrance) ---------- */
.preloader{position:fixed;inset:0;z-index:200;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:30px;background:radial-gradient(120% 120% at 50% 40%,#20232B,#0E0F12);transition:opacity .65s var(--ease),visibility .65s}
.preloader.done{opacity:0;visibility:hidden;pointer-events:none}
.pl-logo{width:120px;height:120px;filter:drop-shadow(0 8px 26px rgba(184,144,42,.35))}
.pl-logo path.hex{fill:none;stroke:url(#pqCopper);stroke-width:5;stroke-linejoin:round;stroke-dasharray:var(--len,360);stroke-dashoffset:var(--len,360);animation:pl-draw 1.1s var(--ease) forwards}
.pl-logo .wing{fill:url(#pqCopper);opacity:0;animation:pl-fade .5s ease .72s forwards}
.pl-bar{width:184px;height:3px;border-radius:3px;background:rgba(255,255,255,.1);overflow:hidden}
.pl-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--copper-soft),var(--copper-deep));box-shadow:0 0 14px rgba(184,144,42,.5);animation:pl-fill 1.15s var(--ease) forwards}
.preloader .pl-tip{color:var(--muted-2);font-size:12px;letter-spacing:4px;text-transform:uppercase;opacity:0;animation:pl-fade .5s ease .9s forwards}
@keyframes pl-draw{to{stroke-dashoffset:0}}
@keyframes pl-fill{to{width:100%}}
@keyframes pl-fade{to{opacity:1}}

/* ---------- Keyframes ---------- */
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(232,199,102,.5)}70%{box-shadow:0 0 0 10px rgba(232,199,102,0)}100%{box-shadow:0 0 0 0 rgba(232,199,102,0)}}
@keyframes pulse-glow{0%,100%{opacity:.5;transform:scale(1)}50%{opacity:.9;transform:scale(1.12)}}
@keyframes wheel{0%{opacity:1;top:6px}100%{opacity:0;top:18px}}
@keyframes scroll-left{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes drift{0%,100%{transform:translate(0,0)}50%{transform:translate(34px,-30px)}}
@keyframes halo{to{transform:rotate(360deg)}}
@keyframes ripple{to{transform:translate(-50%,-50%) scale(2.6);opacity:0}}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .about-grid,.contact-grid,.story-grid{grid-template-columns:1fr;gap:36px}
  .stats-grid,.cert-grid{grid-template-columns:repeat(2,1fr)}
  .trust-cases{grid-template-columns:1fr}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .faq-list{grid-template-columns:1fr}
  .cards{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step{border-right:0;border-bottom:1px solid var(--line-soft)}
  .bento{grid-template-columns:repeat(2,1fr);grid-auto-rows:auto}
  .c-wide,.c-mid,.c-sm{grid-column:span 2}
  .m-grid{grid-template-columns:1fr;gap:28px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero-orbit{display:none}
  .hero-photo{opacity:.28;-webkit-mask-image:linear-gradient(180deg,transparent 6%,#000 60%);mask-image:linear-gradient(180deg,transparent 6%,#000 60%);background-size:auto 70%;background-position:right top}
  .story-visual{min-height:320px}
  /* 中等屏幕收起主导航为汉堡，确保语言切换器不被挤出视口（修复"语言选择没显示"） */
  .brand .name{display:none}
  .nav-links{position:absolute;top:64px;left:50%;transform:translateX(-50%) translateY(-16px);width:min(92vw,360px);flex-direction:column;align-items:stretch;margin-left:0;background:rgba(26,28,32,.97);backdrop-filter:blur(18px) saturate(1.2);-webkit-backdrop-filter:blur(18px) saturate(1.2);border:1px solid var(--line);padding:12px;gap:6px;opacity:0;pointer-events:none;transition:opacity .35s var(--ease),transform .35s var(--ease)}
  .nav-links.open{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}
  .nav-links a{width:100%;text-align:center;padding:12px 15px;opacity:0;transform:translateY(10px);transition:opacity .4s var(--ease),transform .4s var(--ease),color .25s,background .35s var(--ease)}
  .nav-links a:nth-child(1){transition-delay:.05s}
  .nav-links a:nth-child(2){transition-delay:.1s}
  .nav-links a:nth-child(3){transition-delay:.15s}
  .nav-links a:nth-child(4){transition-delay:.2s}
  .nav-links a:nth-child(5){transition-delay:.25s}
  .nav-links a:nth-child(6){transition-delay:.3s}
  .nav-links.open a{opacity:1;transform:none}
  .nav-links a.nav-cta{margin-left:0;justify-content:center}
  .lang-switch{order:2;margin-left:auto}
  .burger{display:flex;order:3}
}
@media(max-width:680px){
  .wrap{padding:0 18px}
  .site-header{padding:12px 12px}
  .nav-pill{gap:8px;padding:7px 8px 7px 10px}
  .brand .name{display:none}
  .nav-links{position:absolute;top:64px;left:50%;transform:translateX(-50%) translateY(-16px);width:min(92vw,360px);flex-direction:column;align-items:stretch;margin-left:0;background:rgba(26,28,32,.97);backdrop-filter:blur(18px) saturate(1.2);-webkit-backdrop-filter:blur(18px) saturate(1.2);border:1px solid var(--line);padding:12px;gap:6px;opacity:0;pointer-events:none;transition:opacity .35s var(--ease),transform .35s var(--ease)}
  .nav-links.open{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}
  .nav-links a{width:100%;text-align:center;padding:12px 15px;opacity:0;transform:translateY(10px);transition:opacity .4s var(--ease),transform .4s var(--ease),color .25s,background .35s var(--ease)}
  .nav-links a:nth-child(1){transition-delay:.05s}
  .nav-links a:nth-child(2){transition-delay:.1s}
  .nav-links a:nth-child(3){transition-delay:.15s}
  .nav-links a:nth-child(4){transition-delay:.2s}
  .nav-links a:nth-child(5){transition-delay:.25s}
  .nav-links a:nth-child(6){transition-delay:.3s}
  .nav-links.open a{opacity:1;transform:none}
  .nav-links a.nav-cta{margin-left:0;justify-content:center}
  .lang-switch{order:2;margin-left:auto}
  .burger{display:flex;order:3}
  .cards,.stats-grid,.cert-grid,.logo-wall{grid-template-columns:1fr}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .hero-stats{gap:24px}
  .foot-grid{grid-template-columns:1fr}
  .mbar{display:grid}
  .fab{display:none}
  body{padding-bottom:70px}
  .to-top{bottom:80px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none;filter:none}
  .hero-title .char{opacity:1;transform:none;filter:none}
  .hero-tag,.hero p.sub,.hero-actions,.hero-stats{opacity:1;filter:none;transform:none}
  .hero-video{opacity:.34}
  .steps .rail{transform:scaleX(1)}
  html{scroll-behavior:auto}
}

/* ===== WebGL 金属流体背景（已沉雅化隐藏，保留 DOM 兼容） ===== */
.fluid-bg{position:absolute;inset:0;width:100%;height:100%;z-index:0;display:block;pointer-events:none}

/* ===== 实拍图可拖拽 3D 转盘（spin3d.js，保留为高级实用交互） ===== */
.about-visual,.story-visual,.contact-scene{perspective:1100px}
.about-visual .pv,.story-visual .pv,.contact-scene .pv{cursor:grab;touch-action:none;transition:transform .12s linear, filter .5s var(--ease)}
.about-visual .pv:active,.story-visual .pv:active,.contact-scene .pv:active{cursor:grabbing}
.spin3d-dragging{cursor:grabbing!important}
.about-visual .pv::after,.story-visual .pv::after,.contact-scene .pv::after{content:"⟲ 拖动旋转";position:absolute;right:12px;top:12px;font-size:11px;letter-spacing:1px;color:#fff;background:rgba(26,28,32,.5);border:1px solid rgba(255,255,255,.18);padding:4px 9px;border-radius:999px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);opacity:0;transition:opacity .4s var(--ease);pointer-events:none;z-index:3}
.about-visual:hover .pv::after,.story-visual:hover .pv::after,.contact-scene:hover .pv::after{opacity:.85}
@media(prefers-reduced-motion:reduce){
  .about-visual .pv,.story-visual .pv,.contact-scene .pv{transition:none}
}

/* ===== Hero 3D 鼠标纵深视差（parallax3d.js 驱动 --h3x / --h3y，克制化） ===== */
.hero{perspective:1400px;perspective-origin:50% 42%}
.hero-video{transform:scale(1.1) translate3d(calc(var(--h3x,0)*0.28px),calc(var(--h3y,0)*0.28px),-60px) rotateX(calc(var(--h3y,0)*-0.12deg)) rotateY(calc(var(--h3x,0)*0.12deg));transition:opacity 1.4s var(--ease-soft),transform .3s var(--ease);will-change:opacity,transform}
.hero-aura{transform:translate3d(calc(var(--h3x,0)*2px),calc(var(--h3y,0)*2px),80px) rotateX(calc(var(--h3y,0)*-0.8deg)) rotateY(calc(var(--h3x,0)*0.8deg));will-change:transform}
.hero-photo{transform:translate3d(calc(var(--h3x,0)*0.8px),calc(var(--py,0px) + var(--h3y,0)*0.8px),60px);will-change:transform}
#forge{transform:scale(1.06) translate3d(calc(var(--h3x,0)*1.2px),calc(var(--h3y,0)*1.2px),60px) rotateX(calc(var(--h3y,0)*-0.4deg)) rotateY(calc(var(--h3x,0)*0.4deg));will-change:transform}
.hero-grid{transform:translate3d(calc(var(--h3x,0)*0.5px),calc(var(--h3y,0)*0.5px),20px);will-change:transform}

/* 标题文字拆层独立视差：标题整体比正文更近、两行再分层，形成独立纵深 */
.hero .wrap{transform-style:preserve-3d}
.hero-title{transform-style:preserve-3d;transform:translate3d(calc(var(--h3x,0)*1.6px),calc(var(--h3y,0)*1.6px),46px);will-change:transform}
.hero-title .line{transform:translateZ(0)}
.hero-title .line.hl{transform:translateZ(24px);text-shadow:0 12px 44px rgba(184,144,42,.4)}
@media(prefers-reduced-motion:reduce){.hero-title{transform:none}.hero-title .line.hl{transform:none}}
.hero-halo{transform:translate3d(calc(var(--h3x,0)*1.4px),calc(var(--h3y,0)*1.4px),40px) rotateX(calc(var(--h3y,0)*-0.5deg)) rotateY(calc(var(--h3x,0)*0.5deg));will-change:transform}
.hero .wrap{transform:translate3d(calc(var(--h3x,0)*1.4px),calc(var(--h3y,0)*1.4px),90px) rotateX(calc(var(--h3y,0)*-0.5deg)) rotateY(calc(var(--h3x,0)*0.5deg));will-change:transform}
@media (max-width:768px){
  .hero{perspective:none}
  .hero-video,.hero-aura,.hero-photo,#forge,.hero-grid,.hero-halo,.hero .wrap{transform:none}
}

/* ===== 沉雅化收口：隐藏过于花哨的装饰层（保留 DOM 兼容 main.js 水合） ===== */
#fluidBg,.fluid-bg{display:none!important}
#forge{display:none!important}
.hero-aura,.hero-orbit,.hero-halo{display:none!important}
/* 拖尾丝带已重新启用（暖金流光），定位由脚本内联设置 */

/* ===== Hero 3D 精密车削件（中轴悬浮，标题穿插其前；容器由沉浸引擎驱动） ===== */
.hero-part-wrap{position:absolute;left:50%;top:44%;width:min(60vw,660px);height:min(60vw,660px);z-index:2;pointer-events:none;transform:translate(-50%,-50%);will-change:transform,opacity}
.hero-part{width:100%;height:100%;display:block;opacity:0;transition:opacity 1.8s var(--ease-soft) .25s}
body:not(.is-loading) .hero-part{opacity:1}
@media (max-width:860px){.hero-part-wrap{width:min(92vw,440px);height:min(92vw,440px);top:38%}}

/* ===== 精密能力 · 参数可视化 ===== */
.capability{background:linear-gradient(180deg,#1A1C20,#20232B)}
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.cap{background:linear-gradient(150deg,#23262E,#1A1C20);border:1px solid var(--line-soft);border-radius:18px;padding:24px 22px;position:relative;overflow:hidden;transition:transform .6s var(--ease-soft),border-color .6s var(--ease-soft),box-shadow .6s var(--ease-soft)}
.cap::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 80% at 100% 0%,rgba(212,175,55,.10),transparent 60%);pointer-events:none}
.cap:hover{border-color:rgba(212,175,55,.4);transform:translateY(-4px);box-shadow:0 24px 50px -28px rgba(184,144,42,.5)}
.cap-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.cap-k{font-size:14px;letter-spacing:.5px;color:var(--muted)}
.cap-v{font-family:var(--font);font-size:30px;font-weight:800;color:var(--slate);line-height:1;filter:drop-shadow(0 0 16px rgba(212,175,55,.28))}
.cap-v small{font-size:13px;color:var(--copper-soft);margin-left:3px;font-family:var(--font);filter:none}
.cap-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.06);margin:16px 0 12px;overflow:hidden}
.cap-bar i{display:block;height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,#B8902A,#E8C766,#D4AF37);box-shadow:0 0 16px rgba(212,175,55,.4);transition:width 1.4s var(--ease-soft)}
.cap.in .cap-bar i{width:var(--w)}
.cap-note{font-size:12.5px;color:var(--muted-2);letter-spacing:.3px}
@media (max-width:860px){.cap-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:540px){.cap-grid{grid-template-columns:1fr}}

/* =========================================================
   沉浸式滚动引擎 v2（滚动 scrub · 2026-07-27 重做）
   全页金粉粒子 · 环境光场 · 巨型水印 · Hero 滚动编舞 ·
   元素随滚动旋转展开（可逆）· 章节扫光 · 标题 3D 翻牌 · 进度条
   ========================================================= */

/* ---- 顶部滚动进度条 ---- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:10000;
  background:linear-gradient(90deg,transparent,rgba(212,175,55,.08),transparent);
  pointer-events:none;
}
.scroll-progress i{
  display:block;height:100%;width:0;border-radius:0 2px 2px 0;
  background:linear-gradient(90deg,#B8902A 0%,#E8C766 50%,#D4AF37 100%);
  box-shadow:0 0 12px rgba(212,175,55,.55),0 0 24px rgba(212,175,55,.35);
}

/* ---- 全页金粉粒子（浮于内容之上的空气感，screen 混合） ---- */
#fxDust{
  position:fixed;inset:0;z-index:90;pointer-events:none;
  mix-blend-mode:screen;
}

/* ---- 环境光场：三团光斑随滚动迁移（金 / 暖琥珀 / 钢蓝） ---- */
.fx-light{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.fx-light i{
  position:absolute;border-radius:50%;
  filter:blur(110px);mix-blend-mode:screen;
  will-change:transform,opacity;
}
.fx-light .l1{width:56vw;height:56vw;top:-18vw;right:-12vw;
  background:radial-gradient(circle,rgba(212,175,55,.15),transparent 65%)}
.fx-light .l2{width:46vw;height:46vw;bottom:-14vw;left:-10vw;
  background:radial-gradient(circle,rgba(224,120,60,.12),transparent 65%);opacity:.55}
.fx-light .l3{width:40vw;height:40vw;top:38%;left:32%;
  background:radial-gradient(circle,rgba(90,120,160,.13),transparent 65%)}

/* ---- 巨型水印「鹏」：描边大字，随滚动旋转 + 上浮 ---- */
.fx-watermark{
  position:fixed;top:0;right:-7vw;z-index:-1;pointer-events:none;user-select:none;
  font-family:var(--serif);font-size:66vh;line-height:1;font-weight:600;
  color:transparent;-webkit-text-stroke:1px rgba(212,175,55,.15);
  transform:translateY(50vh);will-change:transform;
}

/* ---- Hero 齿轮容器：transform/opacity 由引擎每帧驱动 ---- */
.hero-part-wrap{transform-origin:50% 50%}

/* ---- Hero 侧缘竖排编辑文字（高级感栏外注记） ---- */
.hero-side{
  position:absolute;right:30px;top:50%;z-index:3;pointer-events:none;
  transform:translateY(-50%) rotate(90deg);transform-origin:center;
  font-size:11px;letter-spacing:.42em;color:var(--muted-2);
  white-space:nowrap;user-select:none;
}
.hero-side b{color:var(--copper-soft);font-weight:600}
@media (max-width:1080px){.hero-side{display:none}}

/* ---- Hero 标题金行：流光渐变（动态高级感） ---- */
.hero-title .line.hl{
  background:linear-gradient(100deg,#A8854F 0%,#E8C766 25%,#F5E3B0 50%,#E8C766 75%,#A8854F 100%);
  background-size:220% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:hlSheen 7s ease-in-out infinite;
}
@keyframes hlSheen{0%,100%{background-position:0% 0}50%{background-position:100% 0}}
@media(prefers-reduced-motion:reduce){.hero-title .line.hl{animation:none}}

/* ---- 章节扫光（--sp 由引擎写入 0..1） ---- */
[data-fx-section]{position:relative}
.fx-sheen{
  position:absolute;top:-15%;bottom:-15%;left:0;width:42%;z-index:1;
  pointer-events:none;mix-blend-mode:screen;will-change:transform;
  background:linear-gradient(100deg,
    transparent 0%,
    rgba(232,199,102,.045) 30%,
    rgba(232,199,102,.12) 50%,
    rgba(232,199,102,.045) 70%,
    transparent 100%);
  transform:translateX(calc(-130% + var(--sp,0) * 320%));
}

/* ---- 元素随滚动旋转展开（scrub：inline style 每帧驱动，禁 transition 防滞后） ---- */
[data-fx-reveal]{will-change:opacity,transform;transition:none!important}
body.fx-arm [data-fx-reveal]{opacity:0}
body.fx-arm [data-fx-reveal="mask"]{clip-path:inset(88% 0 0 0)}

/* ---- 标题逐字 3D 翻牌 ---- */
.fx-title-ready{perspective:800px}
.fx-title-ready .fx-char{
  display:inline-block;
  opacity:0;transform:translateY(.6em) rotateX(-75deg);
  transform-origin:50% 100%;
  transition:opacity .6s var(--ease),transform .6s var(--ease);
  transition-delay:calc(var(--i,0) * 26ms + 60ms);
  will-change:opacity,transform;
}
.fx-title-ready .fx-space{display:inline-block;width:.25em}
.fx-title-ready.fx-in .fx-char{opacity:1;transform:translateY(0) rotateX(0)}

/* ---- 轻量化降级（移动端 / 低性能：跳过 WebGL 与粒子引擎） ---- */
html.is-lite .hero3d,
html.is-lite #forge,
html.is-lite .hero-part-wrap,
html.is-lite .hero-aura,
html.is-lite .hero-halo,
html.is-lite .hero-orbit,
html.is-lite .hero-grid,
html.is-lite #fxDust,
html.is-lite .fx-light,
html.is-lite .fx-watermark,
html.is-lite .cursor-glow{display:none !important}

/* ---- 减弱动效降级 ---- */
@media(prefers-reduced-motion:reduce){
  #fxDust{mix-blend-mode:normal;opacity:.5}
  .fx-watermark,.fx-sheen{display:none}
  .fx-title-ready .fx-char,.fx-title-ready.fx-in .fx-char{transition:none;opacity:1;transform:none}
  body.fx-arm [data-fx-reveal]{opacity:1;clip-path:none}
}

/* ---- 移动端省电 ---- */
@media (max-width:768px){
  .fx-watermark{font-size:44vh;right:-18vw}
  .fx-light i{filter:blur(80px)}
}