/* ============================================================
   博观元启 Pannovus · 官网样式
   纯静态前端，无构建、无依赖
   页面定位：公司官网（关于 / 命名 / 底座 / 产品 / 联系）
   ============================================================ */

/* ---------- 变量 ---------- */
:root{
  --ink:#101820;
  --ink-2:#3a4550;
  --ink-3:#6b7682;
  --paper:#fdfbf7;
  --bg:#fdfbf7;
  --bg-tint:#f6f3ec;
  --card:#ffffff;
  --line:rgba(16,24,32,.11);
  --line-2:rgba(16,24,32,.06);

  /* 品牌主色取自 BGYQ 标志（浅青 → 深蓝），与赭金构成冷主色 + 暖辅色 */
  --accent:#14498f;
  --accent-2:#2c8fd0;
  --accent-soft:#e9f1fa;
  --accent-ink:#0f3b76;

  --gold:#b1864f;
  --gold-2:#d9b47c;
  --gold-soft:#f5ead8;

  --violet:#7c3aed;
  --mint:#0d9c88;
  --orange:#e2661c;
  --pink:#e0348b;
  --blue:#2563eb;
  --cyan:#0891b2;
  --amber:#e08a0a;

  /* 多彩渐层：全站强调色都从这里取，改一处即可整体换色 */
  --g-brand:linear-gradient(115deg,#0f3b76 0%,#2563eb 46%,#0891b2 100%);
  --g-vivid:linear-gradient(115deg,#2563eb 0%,#7c3aed 40%,#e0348b 72%,#e08a0a 100%);
  --g-cool:linear-gradient(115deg,#0891b2 0%,#4f46e5 90%);

  --radius-xl:26px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-pill:999px;

  --shadow-sm:0 1px 2px rgba(16,24,32,.05);
  --shadow-md:0 2px 4px rgba(16,24,32,.04), 0 16px 40px -22px rgba(16,24,32,.30);
  --shadow-lg:0 30px 70px -44px rgba(11,18,32,.5), 0 2px 6px rgba(16,24,32,.04);

  --font:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun","Source Han Serif CN",serif;
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.8,.24,1);
  --maxw:1180px;
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.02em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
::selection{background:var(--gold);color:#fff}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
section[id],div[id],span[id]{scroll-margin-top:96px}

.skip-link{
  position:fixed;left:16px;top:-60px;z-index:200;
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:var(--radius-pill);
  font-size:14px;transition:top .25s var(--ease);
}
.skip-link:focus{top:16px}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---------- 排版件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold);margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:1.5px;border-radius:2px;background:currentColor;opacity:.7}

.sec-title{font-size:clamp(1.7rem,3.2vw,2.55rem);letter-spacing:-.03em;text-wrap:balance}
.sec-title--serif{font-family:var(--serif);font-weight:600;letter-spacing:.01em;line-height:1.35}
.sec-title--sm{font-size:clamp(1.5rem,2.4vw,2rem)}
.sec-lead{margin-top:20px;color:var(--ink-2);font-size:clamp(1rem,1.1vw,1.05rem);max-width:60ch}
.sec-lead--tight{margin-top:14px}
.sec-lead strong{color:var(--ink);font-weight:650}
.nowrap{white-space:nowrap}
.sec-head{max-width:840px;margin-bottom:54px}
.sec-head .sec-lead{margin-top:20px}

.section{padding:clamp(70px,8.5vw,116px) 0;position:relative}

.pill{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px 7px 12px;border-radius:var(--radius-pill);
  border:1px solid transparent;
  background:
    linear-gradient(#fff,#fff) padding-box,
    linear-gradient(110deg,rgba(37,99,235,.55),rgba(124,58,237,.5),rgba(224,52,139,.4),rgba(224,138,10,.45)) border-box;
  font-size:13px;color:var(--ink-2);
  box-shadow:0 8px 22px -16px rgba(37,99,235,.7);
}
.pill__dot{
  width:7px;height:7px;border-radius:50%;background:var(--g-vivid);
  box-shadow:0 0 0 4px rgba(124,58,237,.14);
  animation:pulse 2.6s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(124,58,237,.32)}
  50%{box-shadow:0 0 0 7px rgba(124,58,237,0)}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:14.5px;font-weight:650;letter-spacing:.01em;
  padding:12px 22px;border-radius:var(--radius-pill);
  transition:transform .22s var(--ease),box-shadow .25s var(--ease),background .2s,color .2s,border-color .2s;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn--lg{padding:15px 28px;font-size:15px}

.btn--gold{
  background:linear-gradient(118deg,#f0a13a 0%,#e2661c 44%,#d1367f 100%);
  color:#fff;
  box-shadow:0 14px 30px -16px rgba(224,102,28,.9),inset 0 1px 0 rgba(255,255,255,.3);
}
.btn--gold:hover{transform:translateY(-2px);box-shadow:0 20px 38px -16px rgba(209,54,127,.75)}
.btn--soft{
  color:#2b3aa8;
  background:linear-gradient(120deg,#edf3ff 0%,#f2ecff 60%,#eaf7ff 100%);
  border:1px solid rgba(99,102,241,.26);
}
.btn--soft:hover{transform:translateY(-2px);border-color:rgba(99,102,241,.5);box-shadow:0 14px 30px -22px rgba(79,70,229,.8)}
.btn--ghost{background:var(--card);color:var(--ink);border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent-ink);transform:translateY(-2px)}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;inset:0 0 auto;z-index:100;
  transition:background .35s var(--ease),box-shadow .35s var(--ease);
}
.nav__inner{
  max-width:var(--maxw);margin:0 auto;padding:0 28px;
  height:76px;display:flex;align-items:center;gap:24px;
}
.nav__links{display:flex;align-items:center;gap:2px}
.nav__links a{
  position:relative;font-size:14px;color:var(--ink-2);font-weight:500;
  padding:8px 12px;border-radius:var(--radius-pill);
  transition:color .2s,background .2s;
}
.nav__links a:hover{color:var(--ink);background:var(--accent-soft)}
.nav__links a.is-current{color:var(--accent-ink);font-weight:650}
.nav__links a.is-current::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:currentColor;
}
.nav__actions{display:flex;align-items:center;gap:12px}

.nav.is-stuck{
  background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  box-shadow:0 1px 0 var(--line-2),0 14px 34px -30px rgba(16,24,32,.6);
}

.brand{display:flex;align-items:center;gap:10px;margin-right:auto;color:var(--ink)}
.brand__logo{
  flex:0 0 auto;display:grid;place-items:center;
  padding:5px 7px;border-radius:9px;background:transparent;
  transition:transform .35s var(--ease);
}
.brand__logo img{width:62px;height:auto}
.brand:hover .brand__logo{transform:translateY(-1px)}
.brand__text{display:flex;flex-direction:column;line-height:1.3}
.brand__text strong{font-size:16.5px;letter-spacing:.04em}
.brand__text em{font-style:normal;font-size:10px;color:var(--ink-3);letter-spacing:.16em}

.nav__burger{display:none;width:42px;height:42px;border-radius:12px;position:relative}
.nav__burger span{
  position:absolute;left:11px;width:20px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .3s var(--ease),opacity .2s;
}
.nav__burger span:nth-child(1){top:15px}
.nav__burger span:nth-child(2){top:20px}
.nav__burger span:nth-child(3){top:25px}
.nav__burger[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav__burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:154px 0 0;overflow:hidden;
  background:
    radial-gradient(880px 480px at 2% -14%,#e2eeff 0%,rgba(226,238,255,0) 58%),
    radial-gradient(760px 460px at 96% 2%,#f0e6ff 0%,rgba(240,230,255,0) 60%),
    radial-gradient(720px 460px at 84% 98%,#d8f7f1 0%,rgba(216,247,241,0) 62%),
    radial-gradient(620px 380px at 44% 112%,#fff0da 0%,rgba(255,240,218,0) 62%),
    linear-gradient(180deg,#fbfdff 0%,#fdfbf7 76%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;pointer-events:none;
  background:linear-gradient(90deg,rgba(37,99,235,0),#2563eb,#7c3aed,#e0348b,#e08a0a,rgba(8,145,178,0));
  opacity:.45;
}
.hero__bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero__hexgrid{
  position:absolute;inset:-10% -5%;
  background:url("../img/hexgrid-ink.svg") center/1150px repeat;
  opacity:.2;
  mask-image:radial-gradient(ellipse 58% 56% at 74% 46%,#000 6%,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse 58% 56% at 74% 46%,#000 6%,transparent 70%);
}
.blob{position:absolute;border-radius:50%;filter:blur(110px)}
.hero__bg::after{
  content:"";position:absolute;right:6%;bottom:-160px;width:520px;height:520px;border-radius:50%;
  background:rgba(8,145,178,.16);filter:blur(120px);
}
.blob--1{width:640px;height:640px;left:-200px;top:-230px;background:rgba(37,99,235,.30)}
.blob--2{width:580px;height:580px;right:-150px;top:20px;background:rgba(124,58,237,.22)}
.hero__vignette{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(253,251,247,.75) 0%,rgba(253,251,247,0) 34%,rgba(253,251,247,.92) 100%);
}
.hero__inner{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  padding-bottom:46px;
}
.hero__title{
  font-family:var(--serif);
  font-size:clamp(2.5rem,5.4vw,4.3rem);
  letter-spacing:.03em;line-height:1.3;margin:24px 0 0;font-weight:600;color:var(--ink);
}
.grad-text,.grad{
  background:linear-gradient(100deg,#0f3b76 0%,#2563eb 32%,#7c3aed 66%,#0891b2 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__lead{
  margin-top:26px;font-size:clamp(1rem,1.15vw,1.08rem);color:var(--ink-2);max-width:52ch;
}
.hero__lead strong{color:var(--ink);font-weight:650}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}

/* --- 六边形视觉 --- */
.hero__visual{position:relative;display:flex;justify-content:center}
.hexviz{position:relative;width:min(100%,452px);aspect-ratio:1}
.hexviz__rings{position:absolute;inset:0;width:100%;height:100%;animation:spin 120s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.ring--1{stroke:rgba(37,99,235,.42)}
.ring--2{stroke:rgba(124,58,237,.24)}
.ring--3{stroke:rgba(8,145,178,.26)}
.spokes path{stroke:rgba(37,99,235,.14)}
.nodes circle{opacity:.95}
.nodes circle:nth-child(1){fill:#2563eb}
.nodes circle:nth-child(2){fill:#7c3aed}
.nodes circle:nth-child(3){fill:#e0348b}
.nodes circle:nth-child(4){fill:#e08a0a}
.nodes circle:nth-child(5){fill:#0d9c88}
.nodes circle:nth-child(6){fill:#0891b2}
.hexviz__core{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:148px;height:148px;display:grid;place-items:center;text-align:center;color:#14498f;
  font-size:9.5px;letter-spacing:.24em;line-height:1.95;
}
.hexviz__core svg{position:absolute;inset:0;width:100%;height:100%}
.hexviz__core::before{
  content:"";position:absolute;inset:-52px;border-radius:50%;z-index:-1;
  background:
    radial-gradient(circle at 32% 30%,rgba(37,99,235,.24),transparent 58%),
    radial-gradient(circle at 70% 68%,rgba(224,52,139,.2),transparent 60%),
    radial-gradient(circle,rgba(8,145,178,.16),transparent 72%);
  filter:blur(2px);
}
.hexviz__core::after{
  content:"";position:absolute;inset:16%;border-radius:50%;z-index:-2;
  background:radial-gradient(circle,rgba(255,255,255,.92),rgba(255,255,255,.55) 58%,rgba(255,255,255,0) 78%);
}
.hexviz__core span{position:relative;padding-top:2px}
.hexviz__core em{font-style:normal;color:#5a6a92}
.hexviz__core polygon[fill="currentColor"]{fill:#fff;opacity:.9}
.hexviz__core circle{display:none}
.hexchip{
  position:absolute;display:flex;flex-direction:column;gap:2px;
  padding:9px 13px;border-radius:12px;
  background:linear-gradient(#fff,#fff) padding-box,linear-gradient(120deg,rgba(37,99,235,.35),rgba(124,58,237,.28),rgba(224,52,139,.24)) border-box;
  border:1px solid transparent;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  box-shadow:0 22px 44px -30px rgba(37,99,235,.65);
}
.hexchip b{font-size:12.5px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.hexchip em{font-style:normal;font-size:10.5px;color:var(--ink-3);line-height:1.5}
.hexchip--1{left:-14px;top:6px;box-shadow:0 22px 44px -30px rgba(37,99,235,.75)}
.hexchip--2{right:-30px;top:96px;box-shadow:0 22px 44px -30px rgba(124,58,237,.75)}
.hexchip--3{left:-34px;bottom:120px;box-shadow:0 22px 44px -30px rgba(224,52,139,.7)}
.hexchip--4{right:-6px;bottom:16px;box-shadow:0 22px 44px -30px rgba(13,156,136,.7)}

/* --- 首屏四要点条 --- */
.hero__spec{position:relative;z-index:3}
.spec{
  display:flex;flex-wrap:wrap;gap:1px;
  background:#dbe4f6;
  border:1px solid #d3def5;
  border-radius:20px;
  overflow:hidden;
  box-shadow:0 30px 64px -48px rgba(24,60,143,.7);
}
.spec__item{
  position:relative;flex:1 1 244px;min-width:0;
  background:#fff;padding:24px 22px 26px;
}
.spec__item::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:#1c53c4;
}
.spec__label{
  display:flex;align-items:center;gap:7px;
  font-size:10.5px;letter-spacing:.18em;color:#6b7682;
  font-weight:650;margin:0 0 10px;
}
.spec__label::before{
  content:"";flex:0 0 5px;width:5px;height:5px;border-radius:50%;
  background:#1c53c4;
}
.spec__title{font-size:15.5px;letter-spacing:.01em;color:#1c53c4;margin:0 0 8px;font-weight:700}
.spec__title--en{font-family:var(--mono);font-size:12.5px;letter-spacing:.13em}
.spec__desc{font-size:12.8px;line-height:1.85;color:#3a4550;margin:0}

.spec__item--2::before,.spec__item--2 .spec__label::before{background:#6832d6}
.spec__item--2 .spec__title{color:#6832d6}
.spec__item--3::before,.spec__item--3 .spec__label::before{background:#0a8474}
.spec__item--3 .spec__title{color:#0a8474}
.spec__item--4::before,.spec__item--4 .spec__label::before{background:#bd2a6d}
.spec__item--4 .spec__title{color:#bd2a6d}

.hero__belief{position:relative;z-index:2;margin-top:26px;padding-bottom:42px;text-align:center}
.hero__belief-text{font-size:12.5px;color:var(--ink-3);letter-spacing:.04em}
.hero__belief-line{
  display:inline-block;font-family:var(--serif);font-size:17px;letter-spacing:.08em;
  color:var(--ink);margin-left:10px;
  background-image:linear-gradient(180deg,transparent 70%,rgba(224,138,10,.32) 70%);
}

/* ---------- split / 信息卡 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:62px;align-items:center}
.split--top{align-items:start}

.factcard{
  position:relative;overflow:hidden;
  background:var(--card);border:1px solid rgba(37,99,235,.12);border-radius:var(--radius-xl);
  padding:28px 28px 22px;
  box-shadow:0 20px 50px -38px rgba(37,99,235,.6);
}
.factcard::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:4px;
  background:var(--g-vivid);
}
.factcard__title{
  font-size:11.5px;letter-spacing:.2em;color:#b06a12;margin-bottom:18px;font-weight:650;
}
.factcard__list{margin:0}
.factcard__list > div{
  display:grid;grid-template-columns:84px 1fr;gap:12px;
  padding:11px 0;border-top:1px solid var(--line-2);
}
.factcard__list > div:first-child{border-top:0;padding-top:0}
.factcard__list dt{font-size:12px;color:var(--ink-3);letter-spacing:.04em}
.factcard__list dd{margin:0;font-size:13.5px;color:var(--ink);line-height:1.6}

.about-cards{margin-top:56px}

/* ---------- 命名由来 ---------- */
.naming{
  position:relative;overflow:hidden;color:var(--ink);
  background:
    radial-gradient(700px 360px at 8% 4%,rgba(37,99,235,.09),transparent 62%),
    radial-gradient(680px 340px at 92% 96%,rgba(224,52,139,.08),transparent 62%),
    linear-gradient(120deg,#f6f9ff 0%,#fbf8f3 46%,#f2fbf8 100%);
  border-block:1px solid rgba(37,99,235,.12);
  padding:clamp(72px,9vw,120px) 0;
}
.naming__bg{position:absolute;inset:0;pointer-events:none}
.naming__hexgrid{
  position:absolute;inset:-20% -10%;
  background:url("../img/hexgrid-ink.svg") center/1000px repeat;
  opacity:.3;
  mask-image:radial-gradient(ellipse 75% 65% at 25% 20%,#000 5%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse 75% 65% at 25% 20%,#000 5%,transparent 72%);
}
.naming .wrap{position:relative}
.naming__head{max-width:820px}
.naming .sec-title{
  font-size:clamp(1.7rem,3.6vw,2.9rem);
  letter-spacing:.06em;line-height:1.5;
}
.naming__attr{margin-top:16px;font-size:13px;color:var(--ink-3);letter-spacing:.08em}

.naming__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:58px}
.naming__item{padding-top:24px;border-top:1px solid rgba(37,99,235,.16)}
.naming__item:nth-child(2){border-top-color:rgba(124,58,237,.22)}
.naming__item:nth-child(3){border-top-color:rgba(224,138,10,.24)}
.naming__char{
  display:block;font-family:var(--serif);font-size:1.65rem;letter-spacing:.16em;
  background:var(--g-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-weight:600;margin-bottom:14px;
}
.naming__item:nth-child(2) .naming__char{background-image:linear-gradient(115deg,#5b21b6,#c0266f)}
.naming__item:nth-child(3) .naming__char{background-image:linear-gradient(115deg,#a85a06,#0b7d70)}
.naming__item p{font-size:13.8px;line-height:1.9;color:var(--ink-2)}

.naming__foot{
  display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start;
  margin-top:62px;padding-top:36px;border-top:1px solid var(--line);
}
.naming__en-mark{
  display:block;font-family:var(--serif);font-size:clamp(1.9rem,3vw,2.6rem);
  letter-spacing:.06em;margin-bottom:10px;
  background:linear-gradient(100deg,#0f3b76,#2563eb 46%,#7c3aed 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.naming__en p{font-size:13.5px;color:var(--ink-2);max-width:44ch;line-height:1.85}
.naming__en b{color:var(--ink);font-weight:650}
.slogan-list{display:flex;flex-direction:column;gap:14px}
.slogan-list li{
  font-family:var(--serif);font-size:1rem;letter-spacing:.1em;color:var(--ink-2);
  padding-left:16px;border-left:2px solid rgba(37,99,235,.5);
}
.slogan-list li:nth-child(2){border-left-color:rgba(124,58,237,.5)}
.slogan-list li:nth-child(3){border-left-color:rgba(224,52,139,.5)}

/* ---------- 智能底座 ---------- */
.engine{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.engine__card{
  position:relative;overflow:hidden;
  background:var(--card);border:1px solid rgba(37,99,235,.1);border-radius:var(--radius-xl);
  padding:30px 26px 26px;
  box-shadow:0 2px 4px rgba(37,99,235,.04),0 18px 42px -30px rgba(37,99,235,.4);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .3s;
}
.engine__card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:3px;
  background:linear-gradient(90deg,#2563eb,#0891b2);
}
.engine__card:nth-child(2)::before{background:linear-gradient(90deg,#7c3aed,#e0348b)}
.engine__card:nth-child(3)::before{background:linear-gradient(90deg,#e08a0a,#0d9c88)}
.engine__card::after{
  content:"";position:absolute;right:-40px;top:-60px;width:160px;height:160px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,235,.12),transparent 68%);
  pointer-events:none;
}
.engine__card:nth-child(2)::after{background:radial-gradient(circle,rgba(124,58,237,.12),transparent 68%)}
.engine__card:nth-child(3)::after{background:radial-gradient(circle,rgba(224,138,10,.13),transparent 68%)}
.engine__card:hover{transform:translateY(-5px);box-shadow:0 30px 64px -44px rgba(37,99,235,.75);border-color:rgba(37,99,235,.3)}
.engine__idx{
  display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;
  margin-bottom:16px;font-weight:700;
}
.engine__card:nth-child(1) .engine__idx{color:#2563eb}
.engine__card:nth-child(2) .engine__idx{color:#7c3aed}
.engine__card:nth-child(3) .engine__idx{color:#c4790a}
.engine__card h3{font-family:var(--serif);font-size:1.5rem;letter-spacing:.08em;margin-bottom:12px}
.engine__card p{font-size:13.8px;color:var(--ink-2);line-height:1.8}
.engine__list{display:flex;flex-wrap:wrap;gap:7px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line-2)}
.engine__list li{
  font-size:11.5px;color:#4b5a70;padding:3px 10px;border-radius:var(--radius-pill);
  background:#f7f9ff;border:1px solid rgba(37,99,235,.13);
}
.engine__note{margin-top:34px;text-align:center;font-size:13.5px;color:var(--ink-3)}
.engine__note a{color:var(--accent-ink);font-weight:650;border-bottom:1px solid rgba(20,73,143,.3);padding-bottom:1px}
.engine__note a:hover{border-color:currentColor}

/* ---------- 产品 ---------- */
.plock{display:flex;align-items:center;gap:18px;margin:-8px 0 46px}
.plock__mark{width:58px;height:58px;flex:0 0 58px;color:#2563eb}
.plock__text h3{font-size:1.9rem;letter-spacing:.02em}
.plock__text p{font-size:13px;color:var(--ink-3);margin-top:2px;letter-spacing:.02em}
.product-intro{gap:56px}
.product-intro .hero__cta{margin-top:28px}
.product-cards{margin-top:56px}

.radar{
  border:1px solid rgba(37,99,235,.14);border-radius:var(--radius-xl);
  padding:24px 20px 16px;
  background:
    radial-gradient(420px 240px at 12% 0%,rgba(37,99,235,.08),transparent 66%),
    radial-gradient(420px 260px at 92% 100%,rgba(224,52,139,.07),transparent 66%),
    linear-gradient(160deg,#fbfcff,#f7f9ff);
  box-shadow:0 24px 60px -46px rgba(37,99,235,.7);
}
.radar__caption{font-size:11.5px;letter-spacing:.2em;color:#2544b8;font-weight:650;margin:0 0 2px 6px}
.radar svg{width:100%;height:auto;max-height:400px}
.radar__rings polygon{fill:none;stroke:var(--line)}
.radar__axes line{stroke:var(--line-2)}
.radar__area{fill:rgba(37,99,235,.12);stroke:#2563eb;stroke-width:1.6;stroke-linejoin:round}
.radar__dots circle:nth-child(odd){fill:#2563eb}
.radar__dots circle:nth-child(even){fill:#7c3aed}
.radar__labels text{
  font-family:var(--font);font-size:16px;font-weight:600;fill:var(--ink-2);letter-spacing:.02em;
}
.radar__note{font-size:11.8px;color:var(--ink-3);margin:2px 6px 4px;line-height:1.7}

/* ---------- 卡片 ---------- */
.cards{display:grid;gap:22px}
.cards--3{grid-template-columns:repeat(3,1fr)}

.card{
  position:relative;overflow:hidden;
  background:var(--card);border:1px solid rgba(37,99,235,.1);border-radius:var(--radius-xl);
  padding:30px 28px 26px;
  box-shadow:0 2px 4px rgba(37,99,235,.04),0 18px 40px -28px rgba(37,99,235,.35);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .3s;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;z-index:1;
  background:linear-gradient(90deg,#2563eb,#0891b2);
}
.cards .card:nth-child(3n+2)::before{background:linear-gradient(90deg,#7c3aed,#e0348b)}
.cards .card:nth-child(3n+3)::before{background:linear-gradient(90deg,#e08a0a,#0d9c88)}
.card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(420px 240px at 88% -12%,rgba(37,99,235,.12),transparent 70%),
             radial-gradient(360px 220px at 0% 110%,rgba(124,58,237,.09),transparent 70%);
  opacity:0;transition:opacity .35s;
}
.card:hover{transform:translateY(-6px);box-shadow:0 26px 60px -40px rgba(37,99,235,.65);border-color:rgba(37,99,235,.28)}
.card:hover::after{opacity:1}
.card h3{font-size:1.18rem;margin-bottom:12px;letter-spacing:-.01em}
.card p{color:var(--ink-2);font-size:14px;line-height:1.8}
.card__icon{
  width:50px;height:50px;border-radius:14px;display:grid;place-items:center;margin-bottom:22px;
  box-shadow:0 10px 22px -16px rgba(37,99,235,.6),inset 0 0 0 1px rgba(255,255,255,.6);
  transition:transform .35s var(--ease);
}
.card:hover .card__icon{transform:scale(1.06) rotate(-4deg)}
.card__icon svg{width:25px;height:25px}
.card__icon--violet{background:linear-gradient(140deg,#efe9ff,#e3d7ff);color:#6832d6}
.card__icon--mint{background:linear-gradient(140deg,#e2fbf5,#cdf3ec);color:#0b8f7c}
.card__icon--orange{background:linear-gradient(140deg,#fff0e2,#ffe3cc);color:#d95f13}
.card__icon--jade{background:linear-gradient(140deg,#e9f2ff,#dbe9ff);color:#1f57c9}
.card__icon--gold{background:linear-gradient(140deg,#fff5e4,#ffe9c7);color:#a9722a}
.card__icon--ink{background:linear-gradient(140deg,#eef2ff,#e4ebff);color:#334fc0}

.ticks{margin-top:18px;display:flex;flex-direction:column;gap:9px}
.ticks li{position:relative;padding-left:24px;font-size:13.2px;color:var(--ink-2)}
.ticks li::before{
  content:"";position:absolute;left:0;top:6px;width:14px;height:14px;border-radius:50%;
  background:var(--accent-soft);box-shadow:inset 0 0 0 1px rgba(20,73,143,.26);
}
.ticks li::after{
  content:"";position:absolute;left:4.5px;top:9.5px;width:5px;height:8px;
  border-right:1.6px solid var(--accent);border-bottom:1.6px solid var(--accent);
  transform:rotate(40deg);
}

/* ---------- 加入我们 ---------- */
.join{
  padding:clamp(70px,8.5vw,110px) 0;
  border-top:1px solid rgba(37,99,235,.1);
  background:
    radial-gradient(620px 300px at 92% 6%,rgba(13,156,136,.07),transparent 66%),
    radial-gradient(560px 280px at 4% 96%,rgba(124,58,237,.06),transparent 66%),
    linear-gradient(180deg,#fbfcff,#f7fbfa 60%,#fdfbf7);
}
.join__mail{
  position:relative;display:block;overflow:hidden;
  background:var(--card);border:1px solid rgba(37,99,235,.12);
  border-radius:var(--radius-xl);padding:34px 36px 32px;
  box-shadow:0 2px 4px rgba(37,99,235,.04),0 22px 48px -34px rgba(37,99,235,.45);
  transition:transform .35s var(--ease),border-color .3s,box-shadow .35s var(--ease);
}
.join__mail::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,#e08a0a,#bd2a6d);
}
a.join__mail:hover{
  transform:translateY(-4px);border-color:rgba(37,99,235,.32);
  box-shadow:0 30px 62px -42px rgba(37,99,235,.75);
}
.join__mail-label{
  display:block;font-size:11px;letter-spacing:.18em;font-weight:650;
  color:#b06a12;margin-bottom:12px;
}
.join__mail b{
  display:block;font-family:var(--mono);font-weight:600;
  font-size:clamp(1.18rem,2.1vw,1.55rem);letter-spacing:.01em;color:var(--accent-ink);
  word-break:break-all;
}
.join__mail em{
  display:block;font-style:normal;margin-top:14px;padding-top:14px;
  border-top:1px solid var(--line-2);
  font-size:12.5px;color:var(--ink-3);
}
.join__mail::after{
  content:"";position:absolute;right:30px;top:36px;width:9px;height:9px;
  border-top:1.6px solid rgba(37,99,235,.4);border-right:1.6px solid rgba(37,99,235,.4);
  transform:rotate(45deg);transition:border-color .3s,transform .3s var(--ease);
}
a.join__mail:hover::after{border-color:#bd2a6d;transform:rotate(45deg) translate(2px,-2px)}

/* ---------- 合作联系 ---------- */
.contact{
  padding:clamp(70px,8.5vw,110px) 0;
  border-top:1px solid rgba(37,99,235,.1);
  background:
    radial-gradient(640px 300px at 4% 10%,rgba(37,99,235,.08),transparent 66%),
    radial-gradient(600px 300px at 96% 88%,rgba(224,52,139,.07),transparent 66%),
    linear-gradient(180deg,#ffffff,#fbfaff 56%,#f6fdff);
}
.contact__inner{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
.contact__cards{display:flex;flex-direction:column;gap:14px}
.contact__card{
  display:block;padding:20px 24px;border-radius:var(--radius-lg);
  background:var(--card);border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
}
a.contact__card:hover{transform:translateX(4px);border-color:rgba(37,99,235,.4);box-shadow:0 24px 52px -40px rgba(37,99,235,.7)}
.contact__label{display:block;font-size:11px;letter-spacing:.18em;color:#b06a12;margin-bottom:6px;font-weight:650}
.contact__cards .contact__card:nth-child(2) .contact__label{color:#7c3aed}
.contact__card b{display:block;font-size:15.5px;letter-spacing:.01em}
.contact__card em{display:block;font-style:normal;font-size:12.5px;color:var(--ink-3);margin-top:3px}

/* ---------- 页脚 ---------- */
.footer{
  border-top:1px solid rgba(37,99,235,.14);
  padding:62px 0 26px;
  background:
    radial-gradient(700px 300px at 6% 0%,rgba(37,99,235,.08),transparent 66%),
    radial-gradient(620px 300px at 92% 100%,rgba(124,58,237,.07),transparent 66%),
    linear-gradient(180deg,#f7f9ff 0%,#fbf8f4 58%,#f3fbf8 100%);
}
.footer__inner{display:grid;grid-template-columns:1.2fr 2fr;gap:48px}
.footer__brand p{font-size:13px;color:var(--ink-3);margin-top:16px;max-width:32ch;line-height:1.8}
.brand--footer{margin-bottom:4px;gap:13px}
.brand--footer .brand__logo{padding:0;background:none;border-radius:0;box-shadow:none}
.brand--footer .brand__logo img{width:118px}
.brand--footer:hover .brand__logo{transform:none}
.footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.footer__col{display:flex;flex-direction:column;gap:11px}
.footer__col h4{font-size:12px;letter-spacing:.1em;color:var(--ink);margin-bottom:3px;font-weight:700}
.footer__col a{font-size:12.8px;color:var(--ink-3);transition:color .2s;width:fit-content}
.footer__col a:hover{color:var(--accent-ink)}
.footer__muted{font-size:12px;color:var(--ink-3);opacity:.85}
/* ---------- 产品备案行 ---------- */
.footer__filing{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  font-size:12px;color:#5f6b7e;
}
.footer__filing-badge{
  font-size:10px;letter-spacing:.12em;font-weight:700;color:#2563eb;
  background:#edf4ff;border:1px solid rgba(37,99,235,.18);
  border-radius:var(--radius-pill);padding:2px 9px 3px;
}
.footer__filing-no{
  font-family:var(--mono);font-size:12px;font-weight:600;color:#1c2634;white-space:nowrap;
  border-bottom:1px solid rgba(37,99,235,.32);padding-bottom:1px;
  transition:color .2s,border-color .2s;
}
.footer__filing-name{color:#3a4550}
.footer__filing-site{
  color:#2544b8;border-bottom:1px solid rgba(37,99,235,.32);padding-bottom:1px;
  transition:color .2s,border-color .2s;
}
.footer__filing-no:hover,.footer__filing-site:hover{color:#bd2a6d;border-color:rgba(189,42,109,.5)}
.footer__filing-sep{width:3px;height:3px;border-radius:50%;background:#c3ccd9}

.footer__bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:18px;padding-top:16px;
  font-size:11.8px;color:#5f6b7e;
}
.footer__bottom a{border-bottom:1px solid rgba(37,99,235,.35);white-space:nowrap;padding-bottom:1px;transition:color .2s,border-color .2s}
.footer__bottom a:hover{color:#2544b8;border-color:currentColor}

/* ---------- 入场动画 ---------- */
html.js .reveal{opacity:0;transform:translateY(20px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0s)}
html.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:90;
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  background:var(--card);color:#2544b8;border:1px solid rgba(37,99,235,.2);
  box-shadow:var(--shadow-md);
  opacity:0;transform:translateY(12px) scale(.9);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease),color .2s,border-color .2s,box-shadow .25s;
}
.to-top svg{width:20px;height:20px}
.to-top.is-shown{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{color:#7c3aed;border-color:rgba(124,58,237,.5);transform:translateY(-2px);box-shadow:0 18px 36px -24px rgba(124,58,237,.8)}

/* ============================================================
   板块底色：冷暖交替的极浅色场，避免大片纯白
   ============================================================ */
#about{
  background:
    radial-gradient(780px 380px at 2% 0%,rgba(37,99,235,.07),transparent 64%),
    radial-gradient(700px 360px at 99% 88%,rgba(224,138,10,.07),transparent 66%),
    linear-gradient(180deg,#fdfbf7,#fcfaf9);
}
#engine{
  background:
    radial-gradient(740px 350px at 98% 0%,rgba(124,58,237,.07),transparent 64%),
    radial-gradient(640px 330px at 0% 100%,rgba(13,156,136,.07),transparent 66%),
    linear-gradient(180deg,#ffffff,#fdfbf7);
}
#product{
  border-top:1px solid rgba(37,99,235,.1);
  border-bottom:1px solid rgba(37,99,235,.1);
  background:
    radial-gradient(700px 350px at 2% 0%,rgba(8,145,178,.07),transparent 64%),
    radial-gradient(660px 340px at 98% 92%,rgba(224,52,139,.06),transparent 66%),
    radial-gradient(600px 320px at 40% 104%,rgba(224,138,10,.06),transparent 66%),
    linear-gradient(180deg,#fbfdff,#fdfbff 52%,#f6fbfa);
}

/* ---------- 响应式 ---------- */
@media (max-width:1120px){
  .hero__inner{grid-template-columns:1fr;gap:44px}
  .hexchip--1{left:0}
  .hexchip--2{right:0}
  .hexchip--3{left:0}
  .hexchip--4{right:0}
  .split{grid-template-columns:1fr;gap:44px}
  .contact__inner{grid-template-columns:1fr;gap:36px}
  .footer__inner{grid-template-columns:1fr;gap:36px}
  .naming__foot{grid-template-columns:1fr;gap:30px}
}
@media (max-width:960px){
  .nav__links{
    position:fixed;inset:76px 12px auto;flex-direction:column;align-items:stretch;gap:2px;
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:14px;box-shadow:var(--shadow-lg);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);
    transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
  }
  .nav__links.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .nav__links a{padding:12px 14px;font-size:15px;border-radius:12px;color:var(--ink-2) !important}
  .nav__links a.is-current::after{display:none}
  .nav__burger{display:block}
  .cards--3{grid-template-columns:1fr}
  .engine{grid-template-columns:1fr}
  .naming__grid{grid-template-columns:1fr;gap:8px}
  .naming__item{padding:20px 0}
}
@media (max-width:720px){
  .wrap,.nav__inner{padding:0 20px}
  .hero{padding-top:122px}
  .hero__lead{font-size:15px}
  .spec{border-radius:16px}
  .spec__item{padding:20px 18px 22px}
  .hero__belief-line{display:block;margin:6px 0 0}
  .hexviz{width:min(100%,330px)}
  .hexchip{display:none}
  .hexviz__core{width:104px;height:104px;font-size:8.5px}
  .section{padding:60px 0}
  .sec-head{margin-bottom:38px}
  .footer__cols{grid-template-columns:1fr 1fr;gap:26px}
  .footer__bottom{flex-direction:column;gap:6px}
  .footer__filing{margin-top:34px;padding-top:18px;gap:8px 12px}
  .footer__filing-sep{display:none}
  .footer__filing-name{color:#5f6b7e}
  .plock__text h3{font-size:1.6rem}
  .plock{align-items:flex-start;gap:14px;margin-bottom:34px}
  .plock__mark{width:48px;height:48px;flex:0 0 48px}
  .naming .sec-title{letter-spacing:.04em}
  .product-cards{margin-top:40px}
}
@media (max-width:440px){
  .hero__title{font-size:2.15rem}
  .hero__copy .hero__cta{flex-direction:column;align-items:stretch}
  .hero__copy .hero__cta .btn{width:100%}
  .brand__logo img{width:52px}
  .brand__text strong{font-size:15px}
  .brand__text em{display:none}
  .footer__cols{grid-template-columns:1fr}
  .factcard{padding:22px 20px 18px}
  .factcard__list > div{grid-template-columns:74px 1fr}
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html.js .reveal{opacity:1;transform:none}
}
@media print{
  .nav,.hero__bg,.hexchip{display:none}
  html.js .reveal{opacity:1;transform:none}
  body{background:#fff}
}