/* ==========================================================
   AGGC · Gilded Gold  |  全站统一设计系统（金色双主题）
   暗鎏金背景：暖墨底 + 金色辉光 + 金属拉丝 + 等距金网格
   浅香槟金：html.theme-champagne 整站变量覆盖
   纯 CSS，无框架依赖；断点 1100 / 900 / 640 / 420
   ========================================================== */

:root{
  /* ---------- 色板：暖金 / 鎏金 ---------- */
  --bg:#100c07;
  --bg-2:#191207;
  --panel:#201809;
  --panel-2:#2b1f0d;
  --gold:#d8b26a;
  --gold-hi:#f8e9c4;
  --muted:#ac9871;
  --faint:#806d49;

  /* RGB 分量：全站半透明金色 / 底色都由这三个变量派生 */
  --gold-rgb:212,174,98;
  --bg-rgb:16,12,7;
  --panel-rgb:32,24,9;
  --lift-rgb:58,42,18;

  --line:rgba(var(--gold-rgb),.17);
  --line-mid:rgba(var(--gold-rgb),.33);
  --line-hi:rgba(var(--gold-rgb),.58);
  --sheen:rgba(255,240,205,.018);

  /* 高光金属渐变：香槟金 → 赤金 → 亮金 */
  --metal:linear-gradient(118deg,#fff3d0 0%,#e2ba6d 26%,#fae9bd 50%,#b8863c 76%,#eed092 100%);
  --metal-soft:linear-gradient(118deg,#d9bb80 0%,#a9884e 46%,#c8a668 100%);
  --ink-on-metal:#1b1205;
  --mask:rgba(12,8,3,.48);
  --shadow:0 24px 64px rgba(0,0,0,.45);
  --glow-soft:0 0 0 1px rgba(var(--gold-rgb),.26), 0 12px 42px rgba(var(--gold-rgb),.09);

  /* 尺度 */
  --max:1200px;
  --nav-h:74px;
  --radius:3px;
  --ease:cubic-bezier(.22,.61,.36,1);

  /* 字体 */
  --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono","Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 18px)}
body{
  margin:0;color:var(--gold);
  font-family:var(--font);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
  background-color:var(--bg);
  background-image:
    radial-gradient(1150px 720px at 8% -10%,rgba(var(--gold-rgb),.30),transparent 68%),
    radial-gradient(980px 660px at 96% 2%,rgba(var(--gold-rgb),.18),transparent 72%),
    radial-gradient(1100px 820px at 50% 106%,rgba(var(--gold-rgb),.13),transparent 74%),
    linear-gradient(102deg,transparent 16%,rgba(var(--gold-rgb),.055) 38%,transparent 58%),
    repeating-linear-gradient(118deg,rgba(var(--gold-rgb),.024) 0 1px,transparent 1px 8px),
    repeating-linear-gradient(0deg,transparent 0 79px,rgba(var(--gold-rgb),.045) 79px 80px),
    repeating-linear-gradient(90deg,transparent 0 79px,rgba(var(--gold-rgb),.045) 79px 80px),
    linear-gradient(180deg,#211708 0%,var(--bg) 44%,#191105 100%);
  background-attachment:fixed;
}
body.nav-open{overflow:hidden}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
img{display:block;max-width:100%}
::selection{background:rgba(var(--gold-rgb),.26);color:var(--gold-hi)}
:focus-visible{outline:1px solid var(--line-hi);outline-offset:3px}

.container{width:min(calc(100% - 48px),var(--max));margin-inline:auto}
.site{position:relative;z-index:2}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* 全局流动几何节点层（canvas 由 aggc.js 驱动） */
#mesh{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:3;opacity:.6}
#progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:60;background:var(--metal);box-shadow:0 0 14px rgba(var(--gold-rgb),.35)}

/* ---------- 文字基元 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font:500 11px/1 var(--mono);letter-spacing:.22em;text-transform:uppercase;
  color:var(--muted);
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--line-hi)}
.metal-text{
  background:var(--metal);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.mono{font-family:var(--mono);letter-spacing:.08em}
.lead{color:var(--muted);font-size:clamp(15px,1.35vw,17px);line-height:1.9}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:46px;padding:0 24px;border:1px solid var(--line-mid);border-radius:var(--radius);
  font-size:14px;font-weight:500;letter-spacing:.03em;white-space:nowrap;
  color:var(--gold);background:transparent;position:relative;overflow:hidden;
  transition:border-color .35s var(--ease),color .35s var(--ease),box-shadow .35s var(--ease),transform .35s var(--ease),background .35s var(--ease);
}
.btn::before{
  content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 20%,rgba(var(--gold-rgb),.13) 50%,transparent 80%);
  transform:translateX(-120%);transition:transform .7s var(--ease);
}
.btn:hover::before{transform:translateX(120%)}
.btn:hover{border-color:var(--line-hi);box-shadow:var(--glow-soft);transform:translateY(-1px)}
.btn--solid{background:var(--metal);color:var(--ink-on-metal);border-color:transparent;font-weight:600}
.btn--solid:hover{box-shadow:0 10px 34px rgba(var(--gold-rgb),.2);border-color:transparent}
.btn--ghost{border-color:var(--line);color:var(--muted)}
.btn--ghost:hover{color:var(--gold-hi)}
.btn--sm{min-height:36px;padding:0 16px;font-size:12.5px}
.btn--lg{min-height:54px;padding:0 32px;font-size:15px}
.btn .arrow{font-family:var(--mono);transition:transform .35s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* ---------- 顶部固定导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:50;
  background:rgba(var(--bg-rgb),.82);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .4s var(--ease),border-color .4s var(--ease);
}
.nav.is-scrolled{background:rgba(var(--bg-rgb),.94);border-bottom-color:var(--line-mid)}
.nav__inner{height:100%;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand__mark{width:30px;height:30px;display:block}
.brand__mark path,.brand__mark circle,.brand__mark line{stroke:var(--gold);fill:none;stroke-width:1.2}
.brand__text{display:flex;flex-direction:column;line-height:1.1}
.brand__text strong{font:600 17px/1 var(--mono);letter-spacing:.16em;color:var(--gold-hi)}
.brand__text small{font-size:10px;letter-spacing:.12em;color:var(--faint);margin-top:4px}
.nav__links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav__links a{
  position:relative;font-size:13.5px;color:var(--muted);white-space:nowrap;
  padding:8px 0;transition:color .3s var(--ease);
}
.nav__links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--metal);transition:width .35s var(--ease);
}
.nav__links a:hover,.nav__links a.is-active{color:var(--gold-hi)}
.nav__links a:hover::after,.nav__links a.is-active::after{width:100%}
.nav__actions{display:flex;gap:10px;flex-shrink:0}
.nav__toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:flex-end;gap:6px;margin-left:auto}
.nav__toggle span{display:block;height:1px;background:var(--gold);transition:all .35s var(--ease)}
.nav__toggle span:nth-child(1){width:24px}
.nav__toggle span:nth-child(2){width:18px}
.nav__toggle span:nth-child(3){width:24px}
.nav__toggle.is-on span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle.is-on span:nth-child(2){opacity:0}
.nav__toggle.is-on span:nth-child(3){width:24px;transform:translateY(-7px) rotate(-45deg)}
/* 中英切换 */
.lang{display:flex;align-items:center;gap:7px;flex-shrink:0;font:11px var(--mono);letter-spacing:.08em}
.lang button{padding:4px 2px;font:11px var(--mono);letter-spacing:.08em;color:var(--faint);transition:color .3s var(--ease)}
.lang button:hover{color:var(--gold)}
.lang button.is-active{color:var(--gold-hi);border-bottom:1px solid var(--line-hi)}
.lang i{font-style:normal;color:var(--line-mid)}
body.lang-en{letter-spacing:.006em}
body.lang-en .banner h1,body.lang-en .section__head h2,body.lang-en .cta h2,body.lang-en .summary h2{letter-spacing:-.018em;line-height:1.28}
body.lang-en .card__desc,body.lang-en .lead,body.lang-en .cap__copy p{line-height:1.8}
body.lang-en .hero__gen{font-size:.5em;font-family:var(--mono)}
/* 金色深浅背景切换 */
.theme-toggle{width:30px;height:30px;margin-left:-18px;flex-shrink:0;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:2px;color:var(--muted);transition:all .3s var(--ease)}
.theme-toggle svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.1;stroke-linecap:round;transition:transform .5s var(--ease)}
.theme-toggle:hover{border-color:var(--line-hi);color:var(--gold-hi)}
.theme-toggle[aria-pressed="true"] svg{transform:rotate(180deg)}
html.theme-champagne .theme-toggle svg circle{fill:currentColor;stroke:none}


/* ---------- 区块骨架 ---------- */
.section{padding:clamp(76px,9vw,124px) 0;position:relative}
.section--tight{padding:clamp(60px,6vw,88px) 0}
.section--alt{background:linear-gradient(180deg,var(--sheen),transparent 60%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{max-width:760px;margin-bottom:clamp(40px,5vw,64px)}
.section__head h2{
  font-size:clamp(28px,3.6vw,44px);line-height:1.3;font-weight:600;letter-spacing:-.01em;
  margin:18px 0 16px;color:var(--gold-hi);
}
.section__head p{color:var(--muted);font-size:15.5px}
.section__foot{margin-top:40px;color:var(--faint);font-size:13px}
.grid{display:grid;gap:20px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--5{grid-template-columns:repeat(5,minmax(0,1fr))}

/* ---------- Banner：底层图 / 中层节点 / 上层文字 ---------- */
.banner{
  position:relative;min-height:clamp(430px,62vh,600px);display:flex;align-items:center;
  padding:calc(var(--nav-h) + 70px) 0 74px;overflow:hidden;
  border-bottom:1px solid var(--line);isolation:isolate;
}
.banner--hero{min-height:min(920px,100vh);padding-top:calc(var(--nav-h) + 40px);padding-bottom:clamp(88px,10vw,130px)}
.banner__photo{position:absolute;inset:0;z-index:-3}
.banner__photo::after{content:"";position:absolute;inset:0;background:var(--mask)}
.banner__photo img{width:100%;height:100%;object-fit:cover;object-position:center;filter:grayscale(.3) brightness(.72) contrast(1.04)}
/* 未放展位图时淡化蒙版，让金色底层透出来；放入实拍图后仍是 45% 深色蒙版 */
.banner__photo.is-empty::after,
.cta__bg.is-empty::after{background:rgba(var(--bg-rgb),.18)}
.banner__photo.is-empty,.cta__bg.is-empty{
  background:
    radial-gradient(70% 80% at 50% 45%,rgba(var(--gold-rgb),.16),transparent 75%),
    repeating-linear-gradient(0deg,transparent 0 39px,rgba(var(--gold-rgb),.05) 39px 40px),
    repeating-linear-gradient(90deg,transparent 0 39px,rgba(var(--gold-rgb),.05) 39px 40px),
    linear-gradient(180deg,transparent,rgba(var(--bg-rgb),.28));
}
.banner__veil{
  position:absolute;inset:0;z-index:-2;pointer-events:none;
  background:radial-gradient(120% 90% at 50% 40%,transparent 20%,rgba(var(--bg-rgb),.72) 100%),
             linear-gradient(180deg,rgba(var(--bg-rgb),.5) 0%,transparent 30%,rgba(var(--bg-rgb),.55) 100%);
}
.banner__glow{
  position:absolute;z-index:-1;inset:0;pointer-events:none;
  background:radial-gradient(50% 45% at 72% 32%,rgba(var(--gold-rgb),.07),transparent 70%);
}
.banner__inner{position:relative;z-index:2}
.banner h1{
  font-size:clamp(36px,5.2vw,66px);line-height:1.18;font-weight:600;letter-spacing:-.015em;
  margin:20px 0 18px;color:var(--gold-hi);max-width:20ch;
}
.banner__sub{color:var(--muted);font-size:clamp(15px,1.5vw,18px);max-width:56ch;line-height:1.85}
.banner__tagline{font-size:clamp(18px,2.1vw,27px);font-weight:600;color:var(--gold-hi);letter-spacing:.02em}
.banner__crumb{display:flex;align-items:center;gap:10px;font:11px var(--mono);letter-spacing:.18em;color:var(--faint);text-transform:uppercase}

/* ---------- 通用图片容器：展位图位 + 45% 蒙版 ---------- */
.photo{
  position:relative;overflow:hidden;background:var(--bg-2);
  border:1px solid var(--line);border-radius:var(--radius);
  aspect-ratio:16/10;
}
.photo--wide{aspect-ratio:16/9}
.photo--card{aspect-ratio:4/3}
.photo--square{aspect-ratio:1/1}
.photo--tall{aspect-ratio:3/4}
.photo--fill{position:absolute;inset:0;aspect-ratio:auto;border:0;border-radius:0}
.photo > img{width:100%;height:100%;object-fit:cover;filter:grayscale(.26) brightness(.82) contrast(1.04);transition:transform .9s var(--ease),filter .6s var(--ease)}
.photo:hover > img{transform:scale(1.035);filter:grayscale(.1) brightness(.9) contrast(1.04)}
/* 45% 深色蒙版：无论有无实拍图都生效 */
.photo::after{content:"";position:absolute;inset:0;background:var(--mask);pointer-events:none;z-index:2}
.photo--fill::after{background:rgba(var(--bg-rgb),.45)}
/* 待填图状态：鎏金线框占位，不加载任何图片资源 */
.photo.is-empty::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(90deg,transparent 49.7%,rgba(var(--gold-rgb),.09) 50%,transparent 50.3%),
    linear-gradient(0deg,transparent 49.7%,rgba(var(--gold-rgb),.09) 50%,transparent 50.3%),
    repeating-linear-gradient(0deg,transparent 0 23px,rgba(var(--gold-rgb),.045) 23px 24px),
    repeating-linear-gradient(90deg,transparent 0 23px,rgba(var(--gold-rgb),.045) 23px 24px),
    radial-gradient(70% 70% at 50% 45%,rgba(var(--gold-rgb),.07),transparent 75%);
}
.photo.is-empty .photo__label{opacity:1}
.photo__label{
  position:absolute;left:12px;bottom:10px;z-index:3;opacity:0;
  font:10px/1.4 var(--mono);letter-spacing:.06em;color:var(--muted);
  background:rgba(var(--bg-rgb),.7);border:1px solid var(--line);padding:4px 8px;border-radius:2px;
  transition:opacity .3s var(--ease);pointer-events:none;
}
.photo__corner{position:absolute;top:10px;right:12px;z-index:3;font:10px var(--mono);color:var(--faint);letter-spacing:.1em}

/* ---------- Hero：左文右图双栏 ----------
   「第二代 AIGC」为最大字号 + 最高对比的绝对视觉主角，
   AGGC 退为上游品牌引导行；三条重点放大行格式与字号完全一致。
   右侧独立展位图位，三段轮播演示窗口在双栏正下方。
   --------------------------------------------------------------- */
.hero--stack{display:flex;flex-direction:column;gap:clamp(48px,6vw,76px)}
.hero__layout{
  display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:clamp(36px,4.6vw,72px);align-items:center;
}
.hero__copy{min-width:0}
.banner h1.hero__title{
  display:flex;flex-direction:column;align-items:flex-start;gap:0;
  font:700 clamp(44px,5.7vw,82px)/1.04 var(--font);letter-spacing:-.045em;
  margin:clamp(22px,2.6vw,34px) 0 0;max-width:none;color:var(--gold-hi);
}
.hero__title-top{display:flex;align-items:baseline;gap:.24em;font-family:var(--mono);font-size:.6em;line-height:1;letter-spacing:-.04em}
.hero__brand.metal-text{background:var(--metal-soft);-webkit-background-clip:text;background-clip:text}
.hero__title-sep{font-size:.86em;font-weight:400;letter-spacing:0;color:var(--faint);opacity:.7}
/* 最高视觉优先级：高亮金属渐变 + 最大字号 + 底部金光带 */
.hero__gen{
  font-size:1em;font-weight:700;letter-spacing:-.035em;line-height:1.12;
  margin-top:.2em;position:relative;
}
.hero__gen.metal-text{background:var(--metal);-webkit-background-clip:text;background-clip:text}
.hero__gen::after{content:"";position:absolute;left:0;right:9%;bottom:-.12em;height:2px;background:var(--metal);opacity:.72}
.hero__subtitle{
  font-size:clamp(21px,2.4vw,32px);font-weight:600;line-height:1.42;letter-spacing:.005em;
  color:var(--gold-hi);margin:clamp(24px,2.8vw,36px) 0 0;
}
/* 重点放大行：字号加大、铂金亮字，三条严格同格式 */
.hero__highlights{display:flex;flex-direction:column;gap:clamp(12px,1.4vw,18px);margin-top:clamp(28px,3.2vw,40px)}
.hero__highlights li{
  display:flex;align-items:flex-start;gap:16px;
  font-size:clamp(21px,2.25vw,30px);font-weight:700;line-height:1.45;
  color:var(--gold-hi);letter-spacing:.01em;
}
.hero__check{
  flex:0 0 auto;width:30px;height:30px;margin-top:.22em;
  display:grid;place-items:center;border:1px solid var(--line-hi);border-radius:2px;
  background:rgba(var(--gold-rgb),.09);color:var(--gold);font:600 15px/1 var(--mono);
}
.hero__note{
  margin-top:clamp(24px,2.8vw,34px);max-width:100%;
  color:var(--muted);font-size:clamp(13px,1.1vw,14.5px);line-height:1.85;
}
.hero__note::before{
  content:"";display:inline-block;vertical-align:middle;
  width:22px;height:1px;margin-right:14px;background:var(--line-hi);
}
.hero__note + .hero__note{margin-top:2px}
.hero__note--sub::before{background:transparent}
.hero__copy .btn-row{margin-top:clamp(28px,3vw,38px)}
/* 右侧展位图位：金细外框 + 铂金内框，统一 45% 蒙版由 .photo 负责 */
.hero__visual{position:relative;padding:14px;min-width:0}
.hero__visual::before{content:"";position:absolute;inset:0;border:1px solid var(--line-mid);pointer-events:none}
.hero__visual .photo{aspect-ratio:3/4}
.hero__visual .photo__corner{color:var(--muted)}
/* 空图位淡化蒙版让网格可见；放入实拍图后自动恢复 45% 深色蒙版 */
.hero__visual .photo.is-empty::after{background:rgba(var(--bg-rgb),.12)}
/* 暗金主题下强化空图位的等距网格，避免右侧看起来像一个黑洞 */
html:not(.theme-champagne) .hero__visual .photo.is-empty::before{
  background:
    linear-gradient(90deg,transparent 49.8%,rgba(var(--gold-rgb),.15) 50%,transparent 50.2%),
    linear-gradient(0deg,transparent 49.8%,rgba(var(--gold-rgb),.15) 50%,transparent 50.2%),
    repeating-linear-gradient(0deg,transparent 0 31px,rgba(var(--gold-rgb),.085) 31px 32px),
    repeating-linear-gradient(90deg,transparent 0 31px,rgba(var(--gold-rgb),.085) 31px 32px),
    radial-gradient(62% 55% at 50% 44%,rgba(var(--gold-rgb),.15),transparent 76%);
}
.hero--stack .demo{width:min(100%,900px);margin-inline:auto}
.hero--stack .demo__view{min-height:210px}

/* 演示容器 / 三段轮播 */
.demo{
  border:1px solid var(--line-mid);border-radius:var(--radius);background:rgba(var(--panel-rgb),.72);
  backdrop-filter:blur(10px);box-shadow:var(--shadow);overflow:hidden;
}
.demo__bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line)}
.demo__dot{width:6px;height:6px;border-radius:50%;background:var(--line-mid)}
.demo__bar span{margin-left:auto;font:10px var(--mono);letter-spacing:.14em;color:var(--faint)}
.demo__view{position:relative;min-height:266px;display:flex;align-items:center;justify-content:center;padding:28px;overflow:hidden}
.demo__view::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(0deg,transparent 0 27px,rgba(var(--gold-rgb),.04) 27px 28px),
             repeating-linear-gradient(90deg,transparent 0 27px,rgba(var(--gold-rgb),.04) 27px 28px);
}
.demo__slide{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:30px;text-align:center;opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);pointer-events:none}
.demo__slide.is-active{opacity:1;transform:none;pointer-events:auto}
.demo__glyph{width:78px;height:78px;color:var(--gold);opacity:.85}
.demo__glyph svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1}
.demo__slide h3{font-size:19px;font-weight:600;color:var(--gold-hi);letter-spacing:.02em}
.demo__slide p{font-size:13.5px;color:var(--muted);max-width:34ch}
.demo__step{font:10px var(--mono);letter-spacing:.22em;color:var(--faint)}
.demo__foot{display:flex;align-items:center;gap:10px;padding:14px 16px;border-top:1px solid var(--line)}
.demo__nav{width:28px;height:28px;border:1px solid var(--line);border-radius:2px;display:grid;place-items:center;font:12px var(--mono);color:var(--muted);transition:all .3s var(--ease)}
.demo__nav:hover{border-color:var(--line-hi);color:var(--gold-hi)}
.demo__dots{display:flex;gap:7px;margin-left:auto}
.demo__dots button{width:22px;height:2px;background:var(--line-mid);transition:background .35s var(--ease),width .35s var(--ease)}
.demo__dots button.is-active{background:var(--gold);width:34px}

/* ---------- 卡片 ---------- */
.card{
  position:relative;display:flex;flex-direction:column;
  background:linear-gradient(160deg,rgba(var(--lift-rgb),.7),rgba(var(--panel-rgb),.6));
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:border-color .4s var(--ease),box-shadow .4s var(--ease),transform .4s var(--ease);
}
.card:hover{border-color:var(--line-hi);box-shadow:var(--glow-soft);transform:translateY(-3px)}
.card__media{position:relative;border-bottom:1px solid var(--line)}
.card__media .photo{border:0;border-radius:0;aspect-ratio:16/10}
.card__body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.card__num{font:10px var(--mono);letter-spacing:.2em;color:var(--faint)}
.card__title{font-size:18px;font-weight:600;color:var(--gold-hi);margin:12px 0 10px;letter-spacing:.01em}
.card__desc{font-size:14px;color:var(--muted);line-height:1.85}
.card__foot{margin-top:auto;padding-top:22px}
.card__link{display:inline-flex;align-items:center;gap:9px;font-size:13px;color:var(--gold);border-bottom:1px solid var(--line-mid);padding-bottom:4px;transition:gap .3s var(--ease),border-color .3s var(--ease)}
.card__link:hover{gap:14px;border-color:var(--line-hi)}
.card__tag{
  position:absolute;top:12px;left:12px;z-index:4;font:10px var(--mono);letter-spacing:.12em;
  color:var(--gold);background:rgba(var(--bg-rgb),.72);border:1px solid var(--line);padding:4px 9px;border-radius:2px;
}
.card--pad{padding:28px}
.card--pad .card__title{margin-top:0}

/* 核心优势 4 卡 */
.feature__icon{width:34px;height:34px;margin-bottom:18px;color:var(--gold);opacity:.8}
.feature__icon svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.1}
.feature__meta{margin-top:22px;padding-top:16px;border-top:1px solid var(--line);font:10px var(--mono);letter-spacing:.14em;color:var(--faint)}

/* ---------- 能力模块（左右交替） ---------- */
.cap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.06fr);gap:clamp(36px,6vw,90px);align-items:center;padding:clamp(48px,6vw,84px) 0;border-top:1px solid var(--line)}
.cap:first-child{border-top:0}
.cap:nth-child(even) .cap__media{order:2}
.cap:nth-child(even) .cap__copy{order:1}
.cap__index{font:11px var(--mono);letter-spacing:.2em;color:var(--faint)}
.cap__copy h3{font-size:clamp(24px,2.8vw,34px);font-weight:600;color:var(--gold-hi);margin:16px 0 18px}
.cap__copy p{color:var(--muted);font-size:15.5px;line-height:1.95;max-width:48ch}
.cap__points{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.cap__points span{font:11px var(--mono);letter-spacing:.06em;color:var(--muted);border:1px solid var(--line);padding:6px 11px;border-radius:2px;background:var(--sheen)}

/* ---------- 代际对比 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;position:relative}
.compare__col{padding:clamp(28px,3.5vw,44px);border:1px solid var(--line);border-radius:var(--radius);background:rgba(var(--panel-rgb),.55)}
.compare__col--new{border-color:var(--line-mid);background:linear-gradient(155deg,rgba(var(--lift-rgb),.55),rgba(var(--panel-rgb),.7));box-shadow:var(--glow-soft)}
.compare__label{font:11px var(--mono);letter-spacing:.18em;color:var(--faint);text-transform:uppercase}
.compare__col--new .compare__label{color:var(--gold)}
.compare__col h3{font-size:22px;font-weight:600;margin:14px 0 24px;color:var(--gold-hi)}
.compare__col li{display:flex;gap:14px;padding:13px 0;border-top:1px solid var(--line);font-size:14.5px;color:var(--muted)}
.compare__col li::before{content:"—";color:var(--faint);font-family:var(--mono)}
.compare__col--new li{color:var(--gold)}
.compare__col--new li::before{content:"+";color:var(--gold)}

/* ---------- 筛选标签 ---------- */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px}
.filter{
  padding:9px 18px;border:1px solid var(--line);border-radius:2px;
  font-size:13px;color:var(--muted);background:var(--sheen);
  transition:all .3s var(--ease);
}
.filter:hover{border-color:var(--line-mid);color:var(--gold)}
.filter.is-active{background:var(--metal);color:var(--ink-on-metal);border-color:transparent;font-weight:600}
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:18px 0;border-bottom:1px solid var(--line);margin-bottom:34px}
.filter-bar__label{font:10px var(--mono);letter-spacing:.16em;color:var(--faint);margin-right:8px}

/* ---------- 折叠板块 ---------- */
.disclosure{margin-top:56px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(var(--panel-rgb),.45)}
.disclosure__head{width:100%;display:flex;align-items:center;gap:16px;padding:24px 28px;text-align:left;transition:background .3s var(--ease)}
.disclosure__head:hover{background:var(--sheen)}
.disclosure__head h3{font-size:18px;font-weight:600;color:var(--gold-hi)}
.disclosure__head small{margin-left:auto;font:11px var(--mono);letter-spacing:.14em;color:var(--faint)}
.disclosure__icon{width:22px;height:22px;position:relative;flex-shrink:0;border:1px solid var(--line-mid);border-radius:2px}
.disclosure__icon::before,.disclosure__icon::after{content:"";position:absolute;background:var(--gold);transition:transform .35s var(--ease)}
.disclosure__icon::before{left:5px;right:5px;top:10px;height:1px}
.disclosure__icon::after{top:5px;bottom:5px;left:10px;width:1px}
.disclosure.is-open .disclosure__icon::after{transform:rotate(90deg);opacity:0}
.disclosure__body{display:none;padding:0 28px 30px;border-top:1px solid var(--line)}
.disclosure__body-inner{padding-top:28px}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin:22px 0}
.chips span{font-size:13px;color:var(--gold);border:1px solid var(--line-mid);padding:7px 14px;border-radius:2px;background:var(--sheen)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;margin-top:20px}
.timeline::before{content:"";position:absolute;top:23px;left:6%;right:6%;height:1px;background:linear-gradient(90deg,var(--line),var(--line-mid),var(--line))}
.timeline::after{content:"";position:absolute;top:23px;left:6%;height:1px;width:0;background:var(--metal);box-shadow:0 0 12px rgba(var(--gold-rgb),.4);transition:width 1.4s var(--ease)}
.timeline.is-in::after{width:88%}
.step{position:relative;padding:0 14px;text-align:center}
.step__node{width:47px;height:47px;margin:0 auto 26px;border:1px solid var(--line-mid);border-radius:50%;display:grid;place-items:center;background:var(--bg);position:relative;z-index:2;font:12px var(--mono);color:var(--gold);transition:border-color .4s var(--ease),box-shadow .4s var(--ease)}
.step:hover .step__node{border-color:var(--line-hi);box-shadow:0 0 0 6px rgba(var(--gold-rgb),.04)}
.step__num{font:10px var(--mono);letter-spacing:.14em;color:var(--faint)}
.step h3{font-size:15.5px;font-weight:600;color:var(--gold-hi);margin:10px 0 10px;line-height:1.55}
.step p{font-size:13px;color:var(--muted);line-height:1.8}
.step__media{margin-top:18px}

/* ---------- 技术模块 ---------- */
.tech{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.tech__item{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(var(--panel-rgb),.5);transition:border-color .4s var(--ease),box-shadow .4s var(--ease)}
.tech__item:hover{border-color:var(--line-hi);box-shadow:var(--glow-soft)}
.tech__item:nth-child(1),.tech__item:nth-child(2),.tech__item:nth-child(3){grid-column:span 2}
.tech__item:nth-child(4),.tech__item:nth-child(5){grid-column:span 3}
.tech__item:last-child{grid-column:span 6;display:flex;align-items:center;gap:40px}
.tech__item:last-child .tech__body{max-width:70ch}
.tech__k{font:10px var(--mono);letter-spacing:.18em;color:var(--faint)}
.tech__item h3{font-size:19px;font-weight:600;color:var(--gold-hi);margin:12px 0 12px}
.tech__item p{font-size:14px;color:var(--muted);line-height:1.85}
.tech__lines{margin-top:22px;display:flex;flex-direction:column;gap:7px}
.tech__lines i{display:block;height:1px;background:var(--line)}
.tech__lines i:nth-child(2){width:72%}
.tech__lines i:nth-child(3){width:44%}

/* ---------- 视频 / 画廊 / 案例 / Roadmap ---------- */
.video-card{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:rgba(var(--panel-rgb),.5)}
.video-card .photo{aspect-ratio:16/9;border:0;border-radius:0}
.video-card__play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:5;width:58px;height:58px;border:1px solid var(--line-hi);border-radius:50%;display:grid;place-items:center;background:rgba(var(--bg-rgb),.5);backdrop-filter:blur(6px);transition:all .35s var(--ease)}
.video-card:hover .video-card__play{background:rgba(var(--gold-rgb),.14);box-shadow:0 0 0 8px rgba(var(--gold-rgb),.05)}
.video-card__play::after{content:"";width:0;height:0;border-left:11px solid var(--gold);border-top:7px solid transparent;border-bottom:7px solid transparent;margin-left:3px}
.video-card__body{padding:18px 20px 22px}
.video-card__body h3{font-size:16px;font-weight:600;color:var(--gold-hi)}
.video-card__body small{font:10px var(--mono);letter-spacing:.14em;color:var(--faint)}
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.gallery__item{position:relative;cursor:pointer}
.gallery__item .photo{aspect-ratio:4/3}
.gallery__cap{position:absolute;left:14px;bottom:14px;z-index:5}
.gallery__cap strong{display:block;font-size:14px;color:var(--gold-hi);font-weight:600}
.gallery__cap span{font:10px var(--mono);letter-spacing:.12em;color:var(--muted)}
.case{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(30px,5vw,64px);align-items:center}
.case__list{display:flex;flex-direction:column;gap:0}
.case__list li{padding:20px 0;border-top:1px solid var(--line);display:flex;gap:20px;align-items:baseline}
.case__list li:last-child{border-bottom:1px solid var(--line)}
.case__list b{font:11px var(--mono);color:var(--faint);flex-shrink:0}
.case__list strong{font-size:15.5px;font-weight:600;color:var(--gold-hi);display:block;margin-bottom:5px}
.case__list p{font-size:13.5px;color:var(--muted)}
.roadmap{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.roadmap__col{padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(var(--panel-rgb),.45)}
.roadmap__col h3{font-size:16px;color:var(--gold-hi);font-weight:600;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.roadmap__col li{font-size:13.5px;color:var(--muted);padding:7px 0 7px 16px;position:relative}
.roadmap__col li::before{content:"";position:absolute;left:0;top:16px;width:5px;height:5px;border:1px solid var(--line-hi);transform:rotate(45deg)}
.roadmap__col--now{background:linear-gradient(155deg,rgba(var(--lift-rgb),.5),rgba(var(--panel-rgb),.5));border-color:var(--line-mid)}

/* 轻量预览弹层 */
.lightbox{position:fixed;inset:0;z-index:80;background:rgba(var(--bg-rgb),.9);backdrop-filter:blur(10px);display:none;align-items:center;justify-content:center;padding:24px}
.lightbox.is-open{display:flex}
.lightbox__box{width:min(900px,100%);border:1px solid var(--line-mid);border-radius:var(--radius);background:var(--panel);box-shadow:var(--shadow);overflow:hidden}
.lightbox__head{display:flex;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}
.lightbox__head strong{font-size:14px;color:var(--gold-hi)}
.lightbox__close{margin-left:auto;width:30px;height:30px;border:1px solid var(--line);display:grid;place-items:center;font:16px var(--mono);color:var(--muted)}
.lightbox__close:hover{border-color:var(--line-hi);color:var(--gold-hi)}
.lightbox__body{padding:16px}
.lightbox__body .photo{aspect-ratio:16/9}

/* ---------- 合作四栏 ---------- */
.support{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.support__item{padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(var(--panel-rgb),.5);display:flex;flex-direction:column;transition:border-color .4s var(--ease),box-shadow .4s var(--ease)}
.support__item:hover{border-color:var(--line-hi);box-shadow:var(--glow-soft)}
.support__item h3{font-size:17px;color:var(--gold-hi);font-weight:600;margin:14px 0 12px}
.support__item p{font-size:13.5px;color:var(--muted);line-height:1.85;flex:1}
.support__item .btn{margin-top:24px;align-self:flex-start}

/* ---------- 表单 ---------- */
.form-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(36px,6vw,80px);align-items:start}
.form-note li{padding:16px 0;border-top:1px solid var(--line);font-size:14px;color:var(--muted);display:flex;gap:14px}
.form-note li:last-child{border-bottom:1px solid var(--line)}
.form-note li b{font:11px var(--mono);color:var(--gold);flex-shrink:0}
.form{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:clamp(26px,3.5vw,40px);border:1px solid var(--line-mid);border-radius:var(--radius);background:linear-gradient(155deg,rgba(var(--lift-rgb),.55),rgba(var(--panel-rgb),.6))}
.field{display:flex;flex-direction:column;gap:9px}
.field--full{grid-column:1/-1}
.field label{font-size:12.5px;color:var(--muted);letter-spacing:.04em}
.field label em{font-style:normal;color:var(--gold)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;background:rgba(var(--bg-rgb),.55);
  border:1px solid var(--line);border-radius:2px;font-size:14px;color:var(--gold);
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--line-hi);box-shadow:0 0 0 3px rgba(var(--gold-rgb),.06)}
.field textarea{min-height:118px;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;background-size:5px 5px;background-repeat:no-repeat}
.field select option{background:var(--panel)}
.field__upload{display:flex;align-items:center;gap:12px;padding:11px 14px;border:1px dashed var(--line-mid);border-radius:2px;font-size:12.5px;color:var(--muted);cursor:pointer;transition:border-color .3s var(--ease)}
.field__upload:hover{border-color:var(--line-hi)}
.field__upload input{display:none}
.form__msg{grid-column:1/-1;font-size:13px;color:var(--gold);min-height:20px}
.form__msg.is-ok{color:var(--gold-hi)}

/* ---------- 小结 / CTA ---------- */
.summary{
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  padding:clamp(34px,5vw,58px);border:1px solid var(--line-mid);border-radius:var(--radius);
  background:linear-gradient(120deg,rgba(var(--lift-rgb),.65),rgba(var(--panel-rgb),.6));position:relative;overflow:hidden;
}
.summary::after{content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;border:1px solid var(--line);transform:rotate(45deg);pointer-events:none}
.summary h2{font-size:clamp(21px,2.7vw,32px);font-weight:600;line-height:1.5;color:var(--gold-hi);max-width:26ch}
.summary p{color:var(--muted);font-size:14.5px;margin-top:12px;max-width:52ch}
.cta{position:relative;overflow:hidden;padding:clamp(80px,10vw,140px) 0;text-align:center;border-top:1px solid var(--line)}
.cta__bg{position:absolute;inset:0;z-index:-2}
.cta__bg::after{content:"";position:absolute;inset:0;background:var(--mask)}
.cta__bg img{width:100%;height:100%;object-fit:cover;filter:grayscale(.35) brightness(.6)}
.cta__bg.is-empty::after{background:rgba(var(--bg-rgb),.18)}
.cta::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(60% 80% at 50% 50%,rgba(var(--bg-rgb),.5),rgba(var(--bg-rgb),.86))}
.cta h2{font-size:clamp(26px,4vw,44px);font-weight:600;color:var(--gold-hi);max-width:22ch;margin:20px auto 16px;line-height:1.4}
.cta p{color:var(--muted);max-width:52ch;margin:0 auto}
.cta .btn-row{justify-content:center}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line);padding:36px 0;background:rgba(var(--bg-rgb),.6)}
.footer__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px;color:var(--faint)}
.footer__matrix{font-family:var(--mono);letter-spacing:.1em;color:var(--muted)}
.footer a:hover{color:var(--gold-hi)}
.footer__dot{color:var(--line-mid);margin:0 8px}

/* ---------- 滚动显现 ---------- */
[data-reveal]{opacity:0;transform:translateY(20px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}
[data-delay="1"]{transition-delay:.08s}[data-delay="2"]{transition-delay:.16s}
[data-delay="3"]{transition-delay:.24s}[data-delay="4"]{transition-delay:.32s}
[data-delay="5"]{transition-delay:.4s}


/* ==========================================================
   浅香槟金背景：整站变量覆盖，不改任何结构
   触发：<html class="theme-champagne">  |  导航右侧按钮 / ?theme=light
   ========================================================== */
html.theme-champagne{
  --bg:#f6eeda;
  --bg-2:#efe1bf;
  --panel:#fdf6e6;
  --panel-2:#f2e5c6;
  --gold:#986f24;
  --gold-hi:#2a1c06;
  --muted:#6b5734;
  --faint:#917c54;
  --gold-rgb:146,104,32;
  --bg-rgb:246,238,218;
  --panel-rgb:250,241,220;
  --lift-rgb:255,250,236;
  --sheen:rgba(122,88,28,.045);
  --line:rgba(var(--gold-rgb),.2);
  --line-mid:rgba(var(--gold-rgb),.36);
  --line-hi:rgba(var(--gold-rgb),.62);
  --metal:linear-gradient(118deg,#6b4c14 0%,#b58d3c 28%,#85611f 52%,#cba253 76%,#7d5b1c 100%);
  --metal-soft:linear-gradient(118deg,#8a6520 0%,#6b4c14 50%,#9a742c 100%);
  --ink-on-metal:#fff8e6;
  --mask:rgba(42,27,5,.4);
  --shadow:0 24px 64px rgba(88,64,20,.18);
  --glow-soft:0 0 0 1px rgba(var(--gold-rgb),.3),0 12px 42px rgba(var(--gold-rgb),.14);
  color-scheme:light;
}
html.theme-champagne body{
  background-image:
    radial-gradient(1150px 720px at 8% -10%,rgba(235,190,88,.66),transparent 68%),
    radial-gradient(980px 660px at 96% 2%,rgba(214,162,60,.38),transparent 72%),
    radial-gradient(1100px 820px at 50% 106%,rgba(226,180,84,.4),transparent 74%),
    linear-gradient(102deg,transparent 16%,rgba(232,190,96,.16) 38%,transparent 58%),
    repeating-linear-gradient(118deg,rgba(150,110,40,.038) 0 1px,transparent 1px 8px),
    repeating-linear-gradient(0deg,transparent 0 79px,rgba(150,110,40,.06) 79px 80px),
    repeating-linear-gradient(90deg,transparent 0 79px,rgba(150,110,40,.06) 79px 80px),
    linear-gradient(180deg,#fbf0d1 0%,#f7e7bd 44%,#f0d79c 100%);
}
html.theme-champagne #mesh{opacity:.4}
/* 浅金主题下把 45% 深色蒙版换成浅香槟蒙版，避免 Banner 被压成灰褐 */
html.theme-champagne .banner__photo::after,
html.theme-champagne .cta__bg::after{background:rgba(255,249,230,.55)}
html.theme-champagne .banner__veil{
  background:linear-gradient(180deg,rgba(255,249,230,.42),rgba(255,249,230,.2) 48%,rgba(255,249,230,.62));
}
html.theme-champagne .cta::before{background:linear-gradient(180deg,rgba(var(--bg-rgb),.78),rgba(240,215,156,.7))}
html.theme-champagne .photo > img,
html.theme-champagne .banner__photo img{filter:sepia(.14) saturate(.9) brightness(.88) contrast(1.02)}
html.theme-champagne .photo:hover > img{filter:sepia(.08) saturate(1) brightness(.98) contrast(1.02)}
html.theme-champagne .photo{background:var(--bg-2)}
/* 空图位在浅金底上保持干净；放入实拍图后仍走 45% 深色蒙版 */
html.theme-champagne .photo.is-empty:not(.photo--fill)::after{background:rgba(255,249,230,.08)}
html.theme-champagne .photo__corner{color:var(--muted)}

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width:1100px){
  .nav__links{gap:16px}
  .nav__links a{font-size:12.5px}
  .nav__actions .btn--ghost{display:none}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--5{grid-template-columns:repeat(3,minmax(0,1fr))}
  .support{grid-template-columns:repeat(2,1fr)}
  .tech__item:nth-child(1),.tech__item:nth-child(2),.tech__item:nth-child(3){grid-column:span 2}
  .tech__item:last-child{gap:24px}
}
@media (max-width:900px){
  :root{--nav-h:64px}
  body{background-attachment:scroll}
  .container{width:min(calc(100% - 36px),var(--max))}
  .nav__toggle{display:flex}
  .nav__links{
    position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:22px 24px 60px;
    background:rgba(var(--bg-rgb),.98);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);overflow-y:auto;
    transform:translateX(100%);transition:transform .4s var(--ease);z-index:49;
  }
  .nav__links.is-open{transform:none}
  .nav__links a{font-size:17px;padding:16px 0;border-bottom:1px solid var(--line);color:var(--gold)}
  .nav__links a::after{display:none}
  .nav__actions{margin-left:auto}
  .nav__actions .btn--ghost{display:inline-flex}
  .case,.form-layout{grid-template-columns:1fr}
  .hero--stack{gap:52px}
  .hero__layout{grid-template-columns:1fr;gap:44px}
  .hero__visual{max-width:600px}
  .hero__visual .photo{aspect-ratio:16/10}
  .banner h1.hero__title{font-size:clamp(52px,7.4vw,82px)}
  body.lang-en .hero__gen{font-size:.62em}
  .demo__view{min-height:240px}
  .cap{grid-template-columns:1fr;gap:28px}
  .cap:nth-child(even) .cap__media{order:0}
  .cap:nth-child(even) .cap__copy{order:0}
  .timeline{grid-template-columns:1fr;gap:0;padding-left:8px}
  .timeline::before{top:0;bottom:0;left:23px;right:auto;width:1px;height:auto;background:linear-gradient(180deg,var(--line-mid),var(--line))}
  .timeline::after{top:0;left:23px;height:0;width:1px;transition:height 1.4s var(--ease)}
  .timeline.is-in::after{height:100%;width:1px}
  .step{display:grid;grid-template-columns:47px 1fr;gap:0 22px;text-align:left;padding:0 0 34px}
  .step__node{grid-row:1/span 4;margin:0}
  .step__media{grid-column:2;margin-top:14px;max-width:340px}
  .grid--3,.grid--4,.grid--5{grid-template-columns:repeat(2,minmax(0,1fr))}
  .gallery{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tech{grid-template-columns:repeat(2,1fr)}
  .tech__item,.tech__item:nth-child(1),.tech__item:nth-child(2),.tech__item:nth-child(3),.tech__item:nth-child(4),.tech__item:nth-child(5),.tech__item:last-child{grid-column:span 1}
  .tech__item:last-child{display:block}
  .roadmap{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
}
@media (max-width:640px){
  .container{width:min(calc(100% - 28px),var(--max))}
  .section{padding:66px 0}
  .banner{min-height:400px;padding:calc(var(--nav-h) + 56px) 0 58px}
  .banner--hero{min-height:auto;padding-bottom:80px}
  .banner h1.hero__title{font-size:clamp(40px,10.6vw,58px)}
  .hero__title-top{font-size:.72em}
  .hero__gen{line-height:1.18}
  .hero__gen::after{right:0}
  body.lang-en .hero__gen{font-size:.78em}
  body.lang-en .hero__gen::after{display:none}
  .hero__layout{gap:36px}
  .hero__highlights li{gap:12px;font-size:21px}
  .hero__check{width:26px;height:26px;font-size:13px;margin-top:.24em}
  .hero__note::before{width:16px;margin-right:10px}
  .hero--stack .demo__view{min-height:220px}
  .grid--2,.grid--3,.grid--4,.grid--5,.gallery,.support,.form{grid-template-columns:1fr}
  .form{gap:16px}
  .field--full,.form__msg{grid-column:auto}
  .tech{grid-template-columns:1fr}
  .nav__actions{display:none}
  .nav__toggle{margin-left:auto}
  .brand__text small{display:none}
  .btn-row{flex-direction:column;align-items:stretch}
  .btn-row .btn{width:100%}
  .summary{flex-direction:column;align-items:flex-start;padding:28px}
  .footer__inner{flex-direction:column;align-items:flex-start;gap:10px}
  .demo__view{min-height:220px;padding:20px}
  .card__body{padding:20px}
  .disclosure__head{padding:20px}
  .disclosure__body{padding:0 20px 24px}
}
@media (max-width:420px){
  .filter{padding:8px 13px;font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  [data-reveal]{opacity:1;transform:none}
}