/* ==========================================================================
   深圳市心淑教育科技有限公司 —— 企业官网
   设计基调：温暖、儿童友好、现代（极光网格 / 圆角便当布局 / 手绘感插画）
   章节：首屏 · 关于我们 · 关注的问题 · 业务体系 · 平台课程
         合作生态 · 公益计划 · 新闻动态 · 联系我们
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --cream:#FFFAF3;
  --cream-2:#FFF5E9;
  --paper:#FFFFFF;

  --ink:#241F35;
  --ink-2:#585070;
  --ink-3:#8C86A2;
  --line:rgba(36,31,53,.10);
  --line-strong:rgba(36,31,53,.16);

  --coral:#FF6A5B;
  --coral-2:#FF9E8A;
  --coral-soft:#FFE9E4;
  --sun:#FFB93D;
  --sun-2:#FFD77A;
  --sun-soft:#FFF2D8;
  --sky:#3D9BFF;
  --sky-2:#7FC4FF;
  --sky-soft:#E4F1FF;
  --mint:#25CDA0;
  --mint-2:#7FE0C2;
  --mint-soft:#DCF8EF;
  --lav:#8672FF;
  --lav-2:#B4A6FF;
  --lav-soft:#EDE8FF;

  --r-xl:44px;
  --r-lg:30px;
  --r-md:22px;
  --r-sm:14px;

  --sh-sm:0 2px 8px rgba(36,31,53,.05);
  --sh-md:0 20px 44px -22px rgba(36,31,53,.22);
  --sh-lg:0 44px 88px -36px rgba(36,31,53,.30);

  --ease:cubic-bezier(.22,1,.36,1);
  --shell:1180px;

  --font:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei UI","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

/* ---------- 2. 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:var(--cream);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2;text-wrap:balance}
p{margin:0;text-wrap:pretty}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
img,svg{display:block;max-width:100%}
em,i{font-style:normal}

.sprite{position:absolute;width:0;height:0;overflow:hidden}
.ic{width:20px;height:20px;flex:none;color:currentColor}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 28px}

.skip-link{
  position:fixed;top:12px;left:50%;transform:translate(-50%,-160%);
  z-index:200;padding:10px 20px;border-radius:999px;background:var(--ink);color:#fff;font-size:14px;
  transition:transform .3s var(--ease);
}
.skip-link:focus{transform:translate(-50%,0)}
::selection{background:var(--sun-2);color:var(--ink)}

/* ---------- 3. 背景层 ---------- */
.bg-mesh{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;will-change:transform}
.b1{width:620px;height:620px;top:-220px;left:-160px;background:radial-gradient(circle at 35% 35%,#FFD9A8,#FFC7B8 60%,transparent 72%);animation:drift1 26s ease-in-out infinite}
.b2{width:560px;height:560px;top:-140px;right:-180px;background:radial-gradient(circle at 60% 40%,#CDE6FF,#BFD8FF 60%,transparent 72%);animation:drift2 30s ease-in-out infinite}
.b3{width:520px;height:520px;top:46%;left:-220px;background:radial-gradient(circle at 50% 50%,#D8F7EC,#C6F1E2 62%,transparent 74%);animation:drift3 34s ease-in-out infinite}
.b4{width:600px;height:600px;bottom:-220px;right:-200px;background:radial-gradient(circle at 45% 55%,#E6DFFF,#DCD2FF 62%,transparent 74%);animation:drift1 32s ease-in-out infinite reverse}
.b5{width:420px;height:420px;top:74%;left:42%;background:radial-gradient(circle at 50% 50%,#FFF0C9,#FFE7B4 64%,transparent 76%);animation:drift2 28s ease-in-out infinite}
@keyframes drift1{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(60px,50px,0) scale(1.1)}}
@keyframes drift2{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(-70px,60px,0) scale(1.08)}}
@keyframes drift3{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(50px,-60px,0) scale(1.12)}}

.bg-grain{
  position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.32;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='.42'/%3E%3C/svg%3E");
}

.scroll-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:120;background:transparent}
.scroll-progress i{display:block;height:100%;width:0;border-radius:0 3px 3px 0;background:linear-gradient(90deg,var(--sun),var(--coral) 45%,var(--lav));box-shadow:0 0 12px rgba(255,106,91,.4)}

main,header.nav,footer{position:relative;z-index:2}

/* ---------- 4. 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),color .3s var(--ease);
}
.btn .ic{width:18px;height:18px;transition:transform .35s var(--ease)}
.btn:hover .ic{transform:translateX(3px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:15px 28px;font-size:16px}
.btn-block{width:100%}

.btn-primary{
  background:linear-gradient(135deg,var(--coral) 0%,#FF8A4B 48%,var(--sun) 100%);
  color:#fff;box-shadow:0 14px 30px -12px rgba(255,106,91,.65);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 40px -14px rgba(255,106,91,.72)}
.btn-soft{background:rgba(255,255,255,.78);color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--line-strong);backdrop-filter:blur(10px)}
.btn-soft:hover{transform:translateY(-2px);background:#fff;box-shadow:inset 0 0 0 1.5px rgba(36,31,53,.24),0 14px 28px -14px rgba(36,31,53,.28)}
.btn-ghost{color:var(--ink-2)}
.btn-ghost:hover{color:var(--ink);background:rgba(36,31,53,.05)}

.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px 8px 12px;border-radius:999px;
  background:rgba(255,255,255,.85);box-shadow:inset 0 0 0 1.5px var(--line),var(--sh-sm);
  font-size:13.5px;font-weight:700;color:var(--coral);backdrop-filter:blur(8px);
}
.pill .ic{width:16px;height:16px}

/* ---------- 5. 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:100;
  padding:14px 0;
  transition:padding .35s var(--ease),background .35s var(--ease),box-shadow .35s var(--ease),backdrop-filter .35s var(--ease);
}
.nav::after{
  content:"";position:absolute;inset:0;z-index:-1;opacity:0;
  background:rgba(255,250,243,.78);backdrop-filter:blur(18px) saturate(1.6);
  box-shadow:0 1px 0 var(--line),0 12px 30px -22px rgba(36,31,53,.3);
  transition:opacity .35s var(--ease);
}
.nav.is-stuck{padding:8px 0}
.nav.is-stuck::after{opacity:1}

.nav-inner{display:flex;align-items:center;gap:24px}

.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{
  width:42px;height:42px;border-radius:14px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(140deg,var(--sun),var(--coral) 60%,var(--lav));
  box-shadow:0 10px 22px -10px rgba(255,140,80,.8);
  transition:transform .4s var(--ease);
}
.brand-mark svg{width:24px;height:24px}
.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.05)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16.5px;font-weight:800;letter-spacing:-.01em}
.brand-text i{font-size:11.5px;color:var(--ink-3);font-weight:600;letter-spacing:.02em}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;padding:9px 14px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink-2);
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--coral),var(--sun));
  transform:translateX(-50%);transition:width .3s var(--ease);
}
.nav-links a:hover{color:var(--ink);background:rgba(36,31,53,.04)}
.nav-links a.is-active{color:var(--ink)}
.nav-links a.is-active::after{width:18px}

.nav-actions{display:flex;align-items:center;gap:8px;flex:none}
.nav-burger{display:none;width:44px;height:44px;border-radius:14px;place-items:center;background:rgba(255,255,255,.8);box-shadow:inset 0 0 0 1.5px var(--line)}
.nav-burger .ic{width:22px;height:22px}

/* ---------- 6. 首屏 ---------- */
.hero{position:relative;display:flex;flex-direction:column;padding:56px 0 0;overflow:hidden}

/* 全幅背景大图：学生 · 教师 · 课堂使用场景（右侧成组，左侧留白承接文案）
   图片用容器高度的百分比定尺、右下角对齐，尺寸不随文案行数变化，
   避免视口宽度变化时插画人物向文案一侧挤过来 */
.hero-bg{position:absolute;top:0;right:0;bottom:0;left:22%;z-index:0;pointer-events:none}
/* 上下缘羽化，让画幅不像一块贴上去的矩形 */
.hero-bg-inner{
  position:absolute;inset:0;
  -webkit-mask-image:linear-gradient(180deg,transparent 0%,rgba(0,0,0,.3) 6%,#000 17%);
  mask-image:linear-gradient(180deg,transparent 0%,rgba(0,0,0,.3) 6%,#000 17%);
}
.hero-bg img{
  position:absolute;right:0;bottom:0;width:auto;height:92%;max-width:none;
  /* 左缘羽化，消除图片边界与页面底色之间的接缝 */
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.28) 8%,#000 21%);
  mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.28) 8%,#000 21%);
}
/* 渐变蒙版：只做上下融入页面底色；左侧融合交给图片自身的羽化遮罩，
   避免在图片边界处出现硬边 */
.hero-scrim{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(255,250,243,.97) 0%,rgba(255,250,243,.80) 8%,rgba(255,250,243,.30) 15%,rgba(255,250,243,0) 24%),
    linear-gradient(0deg,rgba(255,250,243,.92) 0%,rgba(255,250,243,.30) 11%,rgba(255,250,243,0) 29%);
}

.hero-grid{position:relative;z-index:1;display:block;padding-bottom:64px}
.hero-copy{max-width:478px}

.hero-title{font-size:clamp(42px,5.4vw,68px);line-height:1.08;letter-spacing:-.035em;margin:22px 0 0}
.ink-grad{
  background:linear-gradient(105deg,var(--coral) 0%,#FF8A4B 34%,var(--sun) 62%,var(--lav) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  background-size:200% 100%;animation:inkFlow 8s ease-in-out infinite;
}
@keyframes inkFlow{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}

.hero-lead{margin-top:22px;max-width:560px;font-size:16.5px;line-height:1.85;color:var(--ink-2)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}

.hero-facts{display:flex;flex-wrap:wrap;gap:14px 30px;margin-top:38px;padding-top:26px;border-top:1px dashed var(--line-strong)}
.hero-facts li{display:flex;flex-direction:column;gap:1px}
.hero-facts b{font-size:15px;font-weight:800;color:var(--ink);display:flex;align-items:center;gap:6px}
.hero-facts b::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,var(--coral),var(--sun))}
.hero-facts span{font-size:13px;color:var(--ink-3)}

/* 悬浮产品标签：把插画里的课堂场景与「我们的产品」锚定 */
.hero-chip{
  position:absolute;z-index:2;left:60%;top:7%;
  display:inline-flex;align-items:center;gap:9px;
  padding:10px 18px 10px 14px;border-radius:999px;
  background:rgba(255,255,255,.9);backdrop-filter:blur(14px);
  box-shadow:0 18px 38px -18px rgba(80,52,120,.42),inset 0 0 0 1.5px rgba(255,255,255,.95);
  font-size:13px;font-weight:700;color:var(--ink);
  animation:chipFloat 6.4s ease-in-out infinite;
}
.hero-chip .ic{width:17px;height:17px;color:var(--coral)}
.hero-chip i{font-size:11.5px;font-weight:600;color:var(--ink-3);padding-left:9px;border-left:1px solid var(--line)}
@keyframes chipFloat{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-10px) rotate(1.2deg)}}

/* 滚动字幕 */
.ticker{
  position:relative;z-index:2;overflow:hidden;padding:16px 0;
  background-color:rgba(255,250,243,.86);backdrop-filter:blur(10px);
  background-image:linear-gradient(90deg,rgba(255,185,61,.16),rgba(255,106,91,.13) 40%,rgba(134,114,255,.13));
  border-top:1px solid rgba(255,255,255,.6);border-bottom:1px solid rgba(255,255,255,.6);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.ticker-track{display:flex;align-items:center;gap:22px;width:max-content;animation:marquee 34s linear infinite}
.ticker-track span{font-size:15px;font-weight:800;letter-spacing:.04em;color:var(--ink-2);white-space:nowrap}
.ticker-track i{color:var(--coral);font-size:18px}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- 7. 数据带 ---------- */
.stats{margin-bottom:44px}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
  padding:30px 12px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.72);backdrop-filter:blur(12px);
  box-shadow:var(--sh-md),inset 0 0 0 1.5px rgba(255,255,255,.9);
}
.stat{display:flex;flex-direction:column;gap:6px;padding:6px 22px;text-align:center;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:14%;height:72%;width:1px;background:var(--line)}
.stat b{display:flex;align-items:baseline;justify-content:center;gap:2px;font-size:clamp(32px,4vw,46px);font-weight:900;letter-spacing:-.04em;line-height:1;
  background:linear-gradient(140deg,var(--coral),#FF8A4B 45%,var(--sun));-webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums}
.stat b small{font-size:19px;font-weight:800;letter-spacing:0}
.stat>span{font-size:13.5px;color:var(--ink-2);line-height:1.5;text-wrap:balance}

/* ---------- 8. 通用区块 ---------- */
.section{padding:92px 0}
.sec-head{max-width:768px;margin-bottom:52px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:999px;margin-bottom:20px;
  font-size:13px;font-weight:800;letter-spacing:.04em;color:var(--coral);
  background:rgba(255,255,255,.85);box-shadow:inset 0 0 0 1.5px var(--line),var(--sh-sm);
}
.sec-tag .ic{width:15px;height:15px}
.sec-title{font-size:clamp(30px,3.9vw,46px);line-height:1.22;letter-spacing:-.03em}
.sec-sub{margin-top:18px;font-size:16px;line-height:1.85;color:var(--ink-2)}

/* ---------- 9. 项目缘起 ---------- */
.chain{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.p-card{
  position:relative;display:flex;flex-direction:column;gap:10px;
  padding:26px 24px 30px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.82);backdrop-filter:blur(10px);
  box-shadow:var(--sh-sm),inset 0 0 0 1.5px rgba(255,255,255,.9);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.p-card:hover{transform:translateY(-8px);box-shadow:var(--sh-lg),inset 0 0 0 1.5px rgba(255,255,255,.9)}
/* 递进色带：暗示四个环节层层相扣 */
.p-card::before{
  content:"";position:absolute;left:34px;right:34px;top:0;height:3px;
  border-radius:0 0 4px 4px;opacity:.6;transition:opacity .4s var(--ease),height .4s var(--ease);
}
.p-card:nth-child(1)::before{background:linear-gradient(90deg,var(--coral),var(--coral-2))}
.p-card:nth-child(2)::before{background:linear-gradient(90deg,var(--sun),var(--sun-2))}
.p-card:nth-child(3)::before{background:linear-gradient(90deg,var(--lav),var(--lav-2))}
.p-card:nth-child(4)::before{background:linear-gradient(90deg,var(--mint),var(--mint-2))}
.p-card:hover::before{opacity:1;height:4px}
/* 卡片之间的箭头，表达“彼此加剧”的递进关系 */
.p-card:not(:last-child)::after{
  content:"";position:absolute;right:-13px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--line-strong);border-bottom:2px solid var(--line-strong);
  transform:translateY(-50%) rotate(-45deg);opacity:.75;
}
.p-idx{position:absolute;top:22px;right:24px;font-size:34px;font-weight:900;letter-spacing:-.05em;color:rgba(36,31,53,.07)}
.p-ic{width:52px;height:52px;border-radius:17px;display:grid;place-items:center}
.p-ic .ic{width:26px;height:26px}
.p-ic.coral{background:var(--coral-soft);color:var(--coral)}
.p-ic.sun{background:var(--sun-soft);color:#D98A00}
.p-ic.lav{background:var(--lav-soft);color:var(--lav)}
.p-ic.mint{background:var(--mint-soft);color:#0A9E77}
.p-card h3{margin-top:8px;font-size:18.5px;line-height:1.45}
.p-card p{font-size:14.5px;line-height:1.8;color:var(--ink-2)}
.p-tag{
  margin-top:auto;align-self:flex-start;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;color:var(--ink-3);background:rgba(36,31,53,.05);
}

.origin-callout{
  margin-top:36px;padding:34px 38px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(255,233,228,.9),rgba(255,242,216,.85) 52%,rgba(237,232,255,.85));
  box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.9);
}
.origin-callout p{font-size:16.5px;line-height:1.9;color:var(--ink-2)}
.origin-callout b{color:var(--ink);font-weight:800}

/* ---------- 10. 三方共建（便当布局） ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.b-card{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:30px 28px;border-radius:var(--r-xl);
  box-shadow:var(--sh-sm),inset 0 0 0 1.5px rgba(255,255,255,.85);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
  overflow:hidden;
}
.b-card::after{
  content:"";position:absolute;right:-60px;top:-60px;width:180px;height:180px;border-radius:50%;
  background:rgba(255,255,255,.42);transition:transform .6s var(--ease);
}
.b-card:hover{transform:translateY(-8px);box-shadow:var(--sh-lg),inset 0 0 0 1.5px rgba(255,255,255,.85)}
.b-card:hover::after{transform:scale(1.3)}
.b-warm{background:linear-gradient(150deg,#FFF0E4,#FFE3DA 80%)}
.b-sky{background:linear-gradient(150deg,#E9F4FF,#DCEBFF 80%)}
.b-mint{background:linear-gradient(150deg,#E6FAF2,#D8F5EA 80%)}
.b-note{
  grid-column:1/-1;flex-direction:row;align-items:center;gap:24px;
  background:linear-gradient(120deg,#FFFAF0,#FFF3E2 60%,#F3EEFF);
}
.b-note .b-ic{margin:0}
.b-note::after{display:none}

.b-top{display:flex;align-items:center;gap:12px;position:relative;z-index:1}
.b-ic{
  width:48px;height:48px;border-radius:16px;display:grid;place-items:center;flex:none;
  background:rgba(255,255,255,.86);color:var(--ink);box-shadow:var(--sh-sm);
}
.b-ic .ic{width:24px;height:24px}
.b-warm .b-ic{color:var(--coral)}
.b-sky .b-ic{color:var(--sky)}
.b-mint .b-ic{color:#0A9E77}
.b-role{font-size:12.5px;font-weight:800;letter-spacing:.05em;color:var(--ink-2);padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.7)}
.b-card h3{position:relative;z-index:1;font-size:19px;line-height:1.45}
.b-card>p{position:relative;z-index:1;font-size:14.5px;line-height:1.82;color:var(--ink-2)}
.b-quote{font-size:17px;line-height:1.85;font-weight:600;color:var(--ink);max-width:860px}
.b-list{position:relative;z-index:1;display:flex;flex-direction:column;gap:7px;margin-top:auto;padding-top:14px;border-top:1px dashed rgba(36,31,53,.14)}
.b-list li{display:flex;align-items:flex-start;gap:8px;font-size:13.5px;color:var(--ink-2);line-height:1.6}
.b-list li::before{content:"";flex:none;width:6px;height:6px;margin-top:8px;border-radius:50%;background:currentColor;opacity:.45}

/* ---------- 11. 平台与课程 ---------- */
.platform{position:relative}
.flow{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  padding:34px 28px;border-radius:var(--r-lg);margin-bottom:26px;
  background:rgba(255,255,255,.7);backdrop-filter:blur(10px);
  box-shadow:var(--sh-md),inset 0 0 0 1.5px rgba(255,255,255,.9);
}
.flow-line{
  position:absolute;left:14%;right:14%;top:70px;height:2px;
  background-image:linear-gradient(90deg,var(--line-strong) 0 6px,transparent 6px 14px);
  background-size:14px 2px;background-repeat:repeat-x;
}
.flow-node{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;position:relative;z-index:1}
.fn-ic{width:56px;height:56px;border-radius:19px;display:grid;place-items:center;background:#fff;box-shadow:var(--sh-md)}
.fn-ic .ic{width:27px;height:27px}
.fn-ic.sky{color:var(--sky)}.fn-ic.sun{color:#D98A00}.fn-ic.lav{color:var(--lav)}.fn-ic.mint{color:#0A9E77}
.flow-node b{font-size:15.5px;font-weight:800}
.flow-node i{font-size:12.5px;color:var(--ink-3)}

.tabs{
  display:grid;grid-template-columns:230px 1fr;gap:26px;
  padding:30px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.78);backdrop-filter:blur(10px);
  box-shadow:var(--sh-md),inset 0 0 0 1.5px rgba(255,255,255,.9);
}
.tab-rail{display:flex;flex-direction:column;gap:8px}
.tab-btn{
  display:flex;align-items:center;gap:10px;padding:15px 18px;border-radius:16px;
  font-size:15.5px;font-weight:700;color:var(--ink-2);text-align:left;
  background:rgba(36,31,53,.035);
  transition:all .3s var(--ease);
}
.tab-btn::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--line-strong);transition:all .3s var(--ease)}
.tab-btn:hover{color:var(--ink);background:rgba(36,31,53,.06)}
.tab-btn.is-active{
  color:#fff;background:linear-gradient(135deg,var(--coral),#FF8A4B 55%,var(--sun));
  box-shadow:0 14px 28px -14px rgba(255,106,91,.7);
}
.tab-btn.is-active::before{background:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.28)}

.tab-panel{display:none;animation:panelIn .5s var(--ease)}
.tab-panel.is-active{display:block}
@keyframes panelIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.tab-panel h3{font-size:23px;line-height:1.45;letter-spacing:-.02em}
.tab-panel p{margin-top:14px;font-size:15.5px;line-height:1.9;color:var(--ink-2);max-width:760px}
.tag-list{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.tag-list li{padding:8px 16px;border-radius:999px;font-size:13.5px;font-weight:700;color:var(--ink-2);background:rgba(255,255,255,.9);box-shadow:inset 0 0 0 1.5px var(--line)}

/* ---------- 12. 公益承诺 ---------- */
.promises{position:relative}
.promise-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.pr-card{
  display:flex;flex-direction:column;gap:12px;padding:28px 24px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.8);backdrop-filter:blur(10px);
  box-shadow:var(--sh-sm),inset 0 0 0 1.5px rgba(255,255,255,.9);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.pr-card:hover{transform:translateY(-6px);box-shadow:var(--sh-lg),inset 0 0 0 1.5px rgba(255,255,255,.9)}
.pr-ic{width:46px;height:46px;border-radius:15px;display:grid;place-items:center}
.pr-ic .ic{width:23px;height:23px}
.pr-ic.coral{background:var(--coral-soft);color:var(--coral)}
.pr-ic.lav{background:var(--lav-soft);color:var(--lav)}
.pr-ic.sky{background:var(--sky-soft);color:var(--sky)}
.pr-ic.mint{background:var(--mint-soft);color:#0A9E77}
.pr-card h3{font-size:18px}
.pr-card p{font-size:14px;line-height:1.8;color:var(--ink-2)}
.pr-foot{
  margin-top:auto;align-self:flex-start;padding:5px 13px;border-radius:999px;
  font-size:12px;font-weight:800;letter-spacing:.03em;color:var(--ink-3);background:rgba(36,31,53,.05);
}

/* ---------- 12b. 关于我们 ---------- */
.about-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:60px;align-items:start}
.about-copy h2{margin-top:20px}
.about-body{margin-top:24px;display:flex;flex-direction:column;gap:16px}
.about-body p{font-size:16px;line-height:1.9;color:var(--ink-2)}
.about-body strong{color:var(--ink);font-weight:800}
.about-motto{
  display:flex;align-items:flex-start;gap:14px;margin-top:30px;padding:22px 24px;border-radius:var(--r-md);
  background:linear-gradient(120deg,rgba(255,242,216,.85),rgba(255,233,228,.8) 55%,rgba(237,232,255,.8));
  box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.9);
}
.am-mark{width:38px;height:38px;flex:none;border-radius:12px;display:grid;place-items:center;background:rgba(255,255,255,.9);color:#D98A00;box-shadow:var(--sh-sm)}
.am-mark .ic{width:20px;height:20px}
.about-motto p{font-size:15px;line-height:1.85;font-weight:700;color:var(--ink)}

.value-list{display:flex;flex-direction:column;gap:14px}
.value-list li{
  display:flex;align-items:flex-start;gap:16px;padding:24px 26px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.82);backdrop-filter:blur(10px);
  box-shadow:var(--sh-sm),inset 0 0 0 1.5px rgba(255,255,255,.9);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.value-list li:hover{transform:translateX(6px);box-shadow:var(--sh-md),inset 0 0 0 1.5px rgba(255,255,255,.9)}
.v-ic{width:48px;height:48px;flex:none;border-radius:16px;display:grid;place-items:center}
.v-ic .ic{width:24px;height:24px}
.v-ic.coral{background:var(--coral-soft);color:var(--coral)}
.v-ic.sun{background:var(--sun-soft);color:#D98A00}
.v-ic.sky{background:var(--sky-soft);color:var(--sky)}
.value-list b{font-size:17px;font-weight:800}
.value-list p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--ink-2)}

/* ---------- 12c. 业务体系 ---------- */
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}

/* ---------- 12d. 公益理念画幅 ---------- */
.band-sec{padding:104px 0}
.band-card{
  display:grid;grid-template-columns:1fr 1.08fr;overflow:hidden;
  border-radius:var(--r-xl);
  background:linear-gradient(118deg,#FFF8EE 0%,#FFF0E7 46%,#F6F0FF 100%);
  box-shadow:var(--sh-md),inset 0 0 0 1.5px rgba(255,255,255,.9);
}
.band-copy{display:flex;flex-direction:column;justify-content:center;padding:54px 26px 54px 52px}
.band-mark{
  display:inline-grid;place-items:center;width:52px;height:52px;border-radius:17px;margin-bottom:22px;
  background:rgba(255,255,255,.92);color:var(--coral);box-shadow:var(--sh-sm);
}
.band-mark .ic{width:26px;height:26px}
.band-quote{font-size:clamp(24px,2.7vw,34px);font-weight:800;line-height:1.36;letter-spacing:-.03em}
.band-sub{margin-top:20px;font-size:14px;font-weight:600;line-height:1.8;color:var(--ink-2)}
/* 画幅图片已按主体裁切过，这里只做左缘羽化与卡片底色衔接 */
.band-art{position:relative;min-height:380px;background:#FFF6EE}
.band-art img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:52% 50%;
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.4) 9%,#000 24%);
  mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.4) 9%,#000 24%);
}

/* ---------- 12e. 区块内小标题 ---------- */
.block-head{margin:56px 0 24px}
.block-head h3{font-size:clamp(20px,2.2vw,25px);letter-spacing:-.02em}
.block-head p{margin-top:8px;font-size:14.5px;line-height:1.7;color:var(--ink-3)}

/* ---------- 12f. 新闻动态 ---------- */
.news-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:18px;align-items:stretch}
.news-card{
  position:relative;display:flex;flex-direction:column;gap:14px;overflow:hidden;
  padding:34px 34px 30px;border-radius:var(--r-xl);
  background:rgba(255,255,255,.86);backdrop-filter:blur(10px);
  box-shadow:var(--sh-sm),inset 0 0 0 1.5px rgba(255,255,255,.9);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.news-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--coral),var(--sun))}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--sh-lg),inset 0 0 0 1.5px rgba(255,255,255,.9)}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;font-weight:600;color:var(--ink-3)}
.news-badge{padding:5px 13px;border-radius:999px;font-size:12px;font-weight:800;color:var(--coral);background:var(--coral-soft)}
.news-src::before{content:"·";margin-right:8px;opacity:.6}
.news-card h3{font-size:22px;line-height:1.45;letter-spacing:-.02em}
.news-card>p{font-size:15px;line-height:1.88;color:var(--ink-2)}
.news-more{display:inline-flex;align-items:center;gap:7px;margin-top:auto;padding-top:6px;font-size:14px;font-weight:800;color:var(--coral)}
.news-more .ic{width:17px;height:17px;transition:transform .35s var(--ease)}
.news-card:hover .news-more .ic{transform:translateX(4px)}

.news-side{
  display:flex;flex-direction:column;gap:12px;padding:32px 30px;border-radius:var(--r-xl);
  background:linear-gradient(150deg,#EEF6FF,#EDE8FF 78%);
  box-shadow:var(--sh-sm),inset 0 0 0 1.5px rgba(255,255,255,.9);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.news-side:hover{transform:translateY(-6px);box-shadow:var(--sh-lg),inset 0 0 0 1.5px rgba(255,255,255,.9)}
.ns-ic{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;background:rgba(255,255,255,.88);color:var(--lav);box-shadow:var(--sh-sm)}
.ns-ic .ic{width:23px;height:23px}
.news-side h3{font-size:19px;line-height:1.45}
.news-side p{font-size:14px;line-height:1.82;color:var(--ink-2)}
.news-side .btn{margin-top:auto;align-self:flex-start}

/* ---------- 12g. 联系信息行 ---------- */
.contact-lines{display:flex;flex-direction:column;gap:10px;margin-top:28px;padding-top:24px;border-top:1px dashed var(--line-strong)}
.contact-lines li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--ink-2)}
.contact-lines .ic{width:17px;height:17px;color:var(--ink-3)}

/* ---------- 13. 公益行动 ---------- */
.ring-wrap{display:flex;flex-direction:column;align-items:center;gap:6px;margin:12px 0 46px}
.ring{position:relative;width:420px;height:420px;max-width:86vw;max-height:86vw}
.orbit{position:absolute;border-radius:50%;border:1.5px dashed rgba(36,31,53,.13)}
.o1{inset:12%}
.o2{inset:0;border-style:solid;border-color:rgba(36,31,53,.06)}
.o1{animation:spin 46s linear infinite}
.o2{animation:spin 66s linear infinite reverse}
@keyframes spin{to{transform:rotate(360deg)}}
.core{
  position:absolute;left:50%;top:50%;width:96px;height:96px;margin:-48px 0 0 -48px;border-radius:50%;
  display:grid;place-items:center;color:#fff;
  background:radial-gradient(circle at 38% 32%,#FFD77A,#FFB93D 45%,#FF8A4B 100%);
  box-shadow:0 0 0 14px rgba(255,185,61,.16),0 0 0 30px rgba(255,185,61,.08),0 22px 40px -18px rgba(255,150,60,.8);
  animation:corePulse 4.4s ease-in-out infinite;
}
.core svg{width:44px;height:44px;color:#fff}
@keyframes corePulse{0%,100%{transform:scale(1)}50%{transform:scale(1.07)}}

.kid{
  position:absolute;left:50%;top:50%;width:66px;height:94px;margin:-47px 0 0 -33px;
  transform:rotate(var(--a)) translateY(-148px) rotate(calc(-1 * var(--a)));
}
.kid::before{
  content:"";position:absolute;left:50%;top:0;width:36px;height:36px;margin-left:-18px;border-radius:50%;
  background:linear-gradient(150deg,var(--c1),var(--c2));
  box-shadow:0 6px 14px -6px rgba(36,31,53,.24);
}
.kid::after{
  content:"";position:absolute;left:50%;bottom:6px;width:54px;height:50px;margin-left:-27px;
  border-radius:27px 27px 16px 16px;
  background:linear-gradient(170deg,var(--c1),var(--c2));
  box-shadow:0 8px 16px -8px rgba(36,31,53,.22);
}
.ring-cap{margin-top:22px;font-size:14px;font-weight:700;color:var(--ink-3);letter-spacing:.02em}

.prog-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:18px}
.prog{
  display:flex;flex-direction:column;gap:14px;padding:32px 30px;border-radius:var(--r-xl);
  box-shadow:var(--sh-sm),inset 0 0 0 1.5px rgba(255,255,255,.9);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.prog:hover{transform:translateY(-7px);box-shadow:var(--sh-lg),inset 0 0 0 1.5px rgba(255,255,255,.9)}
.prog.doing{background:linear-gradient(150deg,#FFF3E6,#FFE8DE 70%,#FFF6E4)}
.prog.soon{background:linear-gradient(150deg,#EEF6FF,#EDE8FF 75%)}
.prog-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.prog-badge{display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:800;background:rgba(255,255,255,.8)}
.prog-badge i{width:7px;height:7px;border-radius:50%}
.prog-badge.live{color:#0A9E77}
.prog-badge.live i{background:#25CDA0;box-shadow:0 0 0 0 rgba(37,205,160,.7);animation:ping 2s infinite}
.prog-badge.prep{color:var(--lav)}
.prog-badge.prep i{background:var(--lav)}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(37,205,160,.6)}70%{box-shadow:0 0 0 9px rgba(37,205,160,0)}100%{box-shadow:0 0 0 0 rgba(37,205,160,0)}}
.prog-ic{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;background:rgba(255,255,255,.85);box-shadow:var(--sh-sm);color:var(--coral)}
.prog.soon .prog-ic{color:var(--lav)}
.prog-ic .ic{width:23px;height:23px}
.prog h3{font-size:21px;line-height:1.45}
.prog>p{font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ---------- 14. 加入我们 ---------- */
.join-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
/* 收尾区块的水彩底纹（低透明度，只做氛围，不干扰表单阅读） */
.join{position:relative;overflow:hidden}
.join-bg{
  position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.34;
  background-image:url("../img/hero-scene-soft.jpg");
  background-image:url("../img/hero-scene-soft.webp");
  background-repeat:no-repeat;background-position:50% 44%;background-size:cover;
  -webkit-mask-image:radial-gradient(92% 88% at 52% 46%,#000 0%,rgba(0,0,0,.55) 52%,transparent 88%);
  mask-image:radial-gradient(92% 88% at 52% 46%,#000 0%,rgba(0,0,0,.55) 52%,transparent 88%);
}
.way-list{display:flex;flex-direction:column;gap:6px;margin-top:32px}
.way-list li{display:flex;align-items:flex-start;gap:14px;padding:16px 18px;border-radius:var(--r-md);transition:background .3s var(--ease),transform .3s var(--ease)}
.way-list li:hover{background:rgba(255,255,255,.85);transform:translateX(5px)}
.w-ic{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;flex:none}
.w-ic .ic{width:22px;height:22px}
.w-ic.coral{background:var(--coral-soft);color:var(--coral)}
.w-ic.lav{background:var(--lav-soft);color:var(--lav)}
.w-ic.sky{background:var(--sky-soft);color:var(--sky)}
.w-ic.mint{background:var(--mint-soft);color:#0A9E77}
.way-list div{display:flex;flex-direction:column;gap:2px;padding-top:3px}
.way-list b{font-size:16px;font-weight:800}
.way-list i{font-size:13.5px;color:var(--ink-3);line-height:1.6}

.join-form{
  padding:34px 32px;border-radius:var(--r-xl);
  background:rgba(255,255,255,.86);backdrop-filter:blur(12px);
  box-shadow:var(--sh-lg),inset 0 0 0 1.5px rgba(255,255,255,.9);
}
.join-form h3{font-size:21px}
.form-tip{margin-top:8px;font-size:13.5px;color:var(--ink-3)}
.field{display:flex;flex-direction:column;gap:8px;margin-top:18px}
.field>span{font-size:13.5px;font-weight:700;color:var(--ink-2)}
.field input,.field textarea,.field select{
  width:100%;padding:13px 16px;border-radius:15px;border:1.5px solid var(--line);
  background:rgba(255,250,243,.7);font-family:inherit;font-size:15px;color:var(--ink);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.field textarea{resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#B4AEC4}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;background:#fff;border-color:rgba(255,138,75,.6);box-shadow:0 0 0 4px rgba(255,138,75,.14);
}
.select-wrap{position:relative}
.select-wrap::after{
  content:"";position:absolute;right:18px;top:50%;width:8px;height:8px;margin-top:-6px;
  border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);
  transform:rotate(45deg);pointer-events:none;
}
.field select{appearance:none;cursor:pointer}
.join-form .btn{margin-top:24px}
.form-ok{margin-top:14px;padding:12px 16px;border-radius:14px;font-size:14px;font-weight:700;color:#0A9E77;background:var(--mint-soft);text-align:center}
.field.is-error input,.field.is-error textarea{border-color:rgba(255,106,91,.7);background:#FFF6F4}

/* ---------- 15. 页脚 ---------- */
.footer{margin-top:40px;padding:72px 0 34px;background:linear-gradient(180deg,rgba(255,255,255,0),rgba(255,246,235,.9) 22%,rgba(255,240,226,.95));border-top:1px solid rgba(255,255,255,.7)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.3fr;gap:44px}
.f-brand p{margin-top:18px;max-width:360px;font-size:14px;line-height:1.85;color:var(--ink-2)}
.f-col{display:flex;flex-direction:column;gap:11px}
.f-col h4{font-size:14px;font-weight:800;letter-spacing:.04em;color:var(--ink);margin-bottom:4px}
.f-col a,.f-line{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);transition:color .25s var(--ease)}
.f-col a:hover{color:var(--coral)}
.f-col .ic{width:16px;height:16px;color:var(--ink-3)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:52px;padding-top:24px;border-top:1px dashed var(--line-strong)}
.footer-bottom p{font-size:13px;color:var(--ink-3)}
.f-note{opacity:.85}

/* ---------- 16. 回到顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:90;width:50px;height:50px;border-radius:50%;
  display:grid;place-items:center;color:var(--ink);background:rgba(255,255,255,.9);backdrop-filter:blur(10px);
  box-shadow:var(--sh-md),inset 0 0 0 1.5px rgba(255,255,255,.9);
  opacity:0;visibility:hidden;transform:translateY(14px) scale(.9);
  transition:all .35s var(--ease);
}
.to-top svg{width:22px;height:22px}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{transform:translateY(-3px);color:var(--coral)}

/* ---------- 17. 入场动画 ---------- */
.js [data-reveal]{opacity:0;transform:translateY(28px)}
.js [data-reveal].is-in{
  opacity:1;transform:none;
  transition:opacity .85s var(--ease) var(--d,0ms),transform .85s var(--ease) var(--d,0ms);
}
@media (prefers-reduced-motion:reduce){
  .js [data-reveal]{opacity:1;transform:none}
  *{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.001s!important}
  html{scroll-behavior:auto}
}

/* ---------- 18. 响应式 ---------- */
/* 首屏需要更早切到上下结构：视口变窄时插画会向左靠，与文案抢位置 */
@media (max-width:1260px){
  .hero{padding-top:38px}
  .hero-grid{order:1;padding-bottom:0}
  .hero-copy{max-width:none}
  .hero-bg{position:relative;inset:auto;left:auto;order:2;margin:44px 0 6px}
  .hero-bg-inner{position:static;-webkit-mask-image:none;mask-image:none}
  .hero-bg img{
    position:relative;right:auto;bottom:auto;width:100%;height:auto;
    aspect-ratio:4/3;object-fit:cover;object-position:56% 48%;
    -webkit-mask-image:linear-gradient(180deg,transparent,#000 10%,#000 84%,transparent);
    mask-image:linear-gradient(180deg,transparent,#000 10%,#000 84%,transparent);
  }
  .hero-scrim,.hero-chip{display:none}
  .ticker{order:3}
}

@media (max-width:1080px){
  .chain{grid-template-columns:repeat(2,1fr)}
  .p-card::after{display:none}
  .about-grid{grid-template-columns:1fr;gap:38px}
  .biz-grid{grid-template-columns:repeat(2,1fr)}
  .bento{grid-template-columns:1fr 1fr}
  .b-note{grid-column:1/-1}
  .promise-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  /* 画幅改为上下结构：文案在上、画幅在下 */
  .band-sec{padding:76px 0}
  .band-card{grid-template-columns:1fr}
  .band-copy{padding:34px 26px 32px}
  .band-mark{width:46px;height:46px;margin-bottom:18px}
  .band-mark .ic{width:23px;height:23px}
  .band-art{min-height:0;aspect-ratio:16/9}
  .band-art img{
    position:relative;inset:auto;object-position:52% 48%;
    -webkit-mask-image:linear-gradient(180deg,transparent 0%,rgba(0,0,0,.4) 10%,#000 28%);
    mask-image:linear-gradient(180deg,transparent 0%,rgba(0,0,0,.4) 10%,#000 28%);
  }
  .tabs{grid-template-columns:1fr;gap:20px}
  .tab-rail{flex-direction:row;flex-wrap:wrap}
  .tab-btn{flex:1 1 auto;justify-content:center}
  .join-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}

/* 导航项较多，更早收进汉堡菜单 */
@media (max-width:1024px){
  .nav-links{
    position:absolute;left:20px;right:20px;top:calc(100% + 8px);
    flex-direction:column;align-items:stretch;gap:2px;padding:12px;
    border-radius:var(--r-md);background:rgba(255,255,255,.96);backdrop-filter:blur(18px);
    box-shadow:var(--sh-lg),inset 0 0 0 1.5px rgba(255,255,255,.9);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:all .3s var(--ease);
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-links a{padding:13px 16px;font-size:15.5px}
  .nav-burger{display:grid}
  .nav-actions .btn-ghost{display:none}
}

@media (max-width:860px){
  .section{padding:76px 0}
  .stats-grid{grid-template-columns:1fr 1fr;gap:22px 8px;padding:26px 8px}
  .stat+.stat::before{display:none}
  .stat{padding:0 6px}
  .stat>span{font-size:13px}
  .flow{grid-template-columns:1fr 1fr;gap:24px 16px}
  .flow-line{display:none}
  .prog-grid{grid-template-columns:1fr}
  .ring{width:330px;height:330px;max-width:82vw;max-height:82vw}
  .kid{transform:rotate(var(--a)) translateY(-116px) rotate(calc(-1 * var(--a)));width:56px;height:80px;margin:-40px 0 0 -28px}
  .kid::before{width:30px;height:30px;margin-left:-15px}
  .kid::after{width:46px;height:43px;margin-left:-23px}
  .core{width:78px;height:78px;margin:-39px 0 0 -39px}
  .core svg{width:36px;height:36px}
  .origin-callout{padding:26px 24px}
}

@media (max-width:640px){
  .shell{padding:0 20px}
  .hero{padding-top:30px}
  .hero-bg img{aspect-ratio:4/3;object-position:58% 46%}
  .chain{grid-template-columns:1fr}
  .about-motto{flex-direction:column;gap:12px}
  .value-list li{padding:20px}
  .biz-grid{grid-template-columns:1fr}
  .block-head{margin:42px 0 20px}
  .band-sec{padding:58px 0}
  .band-copy{padding:28px 22px 26px}
  .band-art{aspect-ratio:4/3}
  .news-card{padding:26px 22px}
  .bento{grid-template-columns:1fr}
  .b-note{flex-direction:column;align-items:flex-start;gap:16px}
  .promise-grid{grid-template-columns:1fr}
  .flow{padding:24px 18px}
  .tabs{padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .hero-facts{gap:12px 22px}
  .hero-cta .btn{width:100%}
  .sec-head{margin-bottom:36px}
  .section{padding:64px 0}
}

/* ---------- 19. 打印 ---------- */
@media print{
  .nav,.to-top,.scroll-progress,.bg-mesh,.bg-grain,.ticker,.hero-bg,.hero-chip,.join-bg,.band-art{display:none}
  .band-sec{padding:0 0 28px}
  .band-card{grid-template-columns:1fr;box-shadow:none;background:none}
  body{background:#fff}
  .section{padding:28px 0}
  .js [data-reveal]{opacity:1;transform:none}
}