/* =========================================================
   CoreMate — 设计系统（浅色）
   ========================================================= */
:root{
  --bg:#ffffff;
  --bg-soft:#fafbfc;
  --bg-mint:#f2fbf7;
  --ink:#0e1116;
  --ink-2:#5f6773;
  --ink-3:#9aa1ac;
  --line:#eaecef;
  --line-2:#e0e3e8;
  --mint:#17c99a;
  --mint-deep:#0b8f6e;
  --mint-soft:#eafbf5;
  --radius:20px;
  --max:1180px;
  --ease:cubic-bezier(.22,1,.36,1);
  --font:"Inter","Segoe UI Variable","Segoe UI",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --mono:"SFMono-Regular",ui-monospace,"JetBrains Mono",Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,h5,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:#c8f7e8;color:#0b5c47}

.wrap{width:min(100% - 48px,var(--max));margin-inline:auto}

/* 滚动进度 */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:120}
.scroll-progress i{display:block;height:100%;width:0;background:var(--mint);transition:width .1s linear}

/* =========================================================
   品牌标记
   ========================================================= */
.mark-chip{
  display:inline-grid;place-items:center;flex:0 0 auto;
  width:27px;height:27px;border-radius:9px;
  background:var(--mint);color:#fff;
  box-shadow:0 2px 8px rgba(23,201,154,.30);
  transition:transform .65s var(--ease),box-shadow .4s ease;
}
.mark-chip svg{width:15px;height:15px;stroke-width:2.4}
.brand:hover .mark-chip{transform:rotate(90deg);box-shadow:0 4px 16px rgba(23,201,154,.44)}

/* =========================================================
   首屏 "CoreMate" 里那个 o —— 收缩成薄荷胶囊，轮播图标，再还原
   ========================================================= */
.word-o{
  position:relative;display:inline-block;flex:0 0 auto;
  /* 必须精确等于字母 o 的排版宽度（含字距），main.js 实测后写入 --wo-lw，
     否则 o 两侧的 C / re 会错位。JS 未执行时退回经验值。 */
  width:var(--wo-lw,.59em);
  transition:width .5s var(--ease);
}
/* 胶囊比字母宽，展开时左右把 C / re 轻轻撑开，胶囊两侧各留 0.09em 呼吸 */
.word-o.is-chip{width:max(1.4em,var(--wo-lw,.59em))}

.wo-letter{
  display:block;text-align:center;
  transition:opacity .28s ease,transform .45s var(--ease);
}
.word-o.is-chip .wo-letter{opacity:0;transform:scale(.5);transition-duration:.2s}

.wo-chip{
  position:absolute;left:50%;
  /* 高度与基线由 main.js 实测「o 左侧那个大写字母」的墨迹得出：胶囊上下边缘
     正好卡住 cap-height（含圆形字母的 1px overshoot），不高于也不矮于大写字母。
     JS 未执行时退回经验值（约 0.72em / 0.15em） */
  top:var(--wo-cap-y,.15em);
  width:1.22em;height:var(--wo-cap,.72em);
  margin:0 0 0 -.61em;
  /* 圆角按胶囊高度等比换算（约 35% 高）：高度跟着实测 cap-height 变，
     写死 em 会随高度缩水而显得越来越圆 */
  border-radius:calc(var(--wo-cap,.72em) * .35);
  background:linear-gradient(100deg,#2ad9a4 0%,#17c99a 46%,#12bfc4 100%);
  display:grid;
  /* 必须用 100% 而不是 1fr：1fr 的最小值是 min-content，会被 ∞ 的 .95em 画布
     撑到 107px 超过容器高度，导致所有图标在“更高的格子”里居中而整体偏下 */
  grid-template:100%/100%;
  place-items:center;
  overflow:hidden;
  pointer-events:none;
  opacity:0;
  transform:scale(.32,.88);          /* 起始宽度≈字母 o，像 o 被撑开 */
  transition:opacity .26s ease,transform .5s var(--ease);
}
.word-o.is-chip .wo-chip{opacity:1;transform:none}

/* 七个图标叠在同一格里纵向翻牌，任何时刻只有一个可见 */
.wo-ico{
  grid-area:1/1;
  /* 用 flex 而非 grid 居中：∞ 的画布（.95em）比格子高，grid 会把超尺寸子项
     顶到起始边（实测下坠 13px），flex 的 center 则允许向上下两边对称溢出 */
  display:flex;align-items:center;justify-content:center;
  height:100%;             /* 固定成容器高，七个图标的翻牌位移才一致 */
  color:#fff;
  opacity:0;
  transform:translateY(30%) scale(.7);
  transition:opacity .2s ease,transform .4s var(--ease);
}
.wo-ico.on{opacity:1;transform:none}
.wo-ico.out{opacity:0;transform:translateY(-30%) scale(.7)}
.wo-ico svg{width:.58em;height:.58em;stroke-width:2.6}
/* </> 与对勾的墨迹天生偏扁，单独再放大一档才和其他图标等重 */
.wo-ico--lg svg{width:.7em;height:.7em}
/* 无限符号天生扁宽，给它更大的画布才撑得起视觉重量；配合等比减细描边 */
.wo-ico--inf svg{width:.95em;height:.95em;stroke-width:1.45}

/* =========================================================
   按钮
   ========================================================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;letter-spacing:-.01em;
  white-space:nowrap;position:relative;overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .35s ease,background .3s ease;
  will-change:transform;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-lg{height:52px;padding:0 34px;font-size:15.5px}
.btn-dark{background:#0e1116;color:#fff;box-shadow:0 6px 18px -6px rgba(14,17,22,.5)}
.btn-dark::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,transparent 25%,rgba(255,255,255,.22) 50%,transparent 75%);
  transform:translateX(-120%);transition:transform .7s var(--ease);
}
.btn-dark:hover::after{transform:translateX(120%)}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 12px 26px -8px rgba(14,17,22,.55);background:#000}
.btn-dark svg{transition:transform .3s var(--ease)}
.btn-dark:hover svg{transform:translateY(2px)}

.link-quiet{
  font-size:15px;color:var(--ink-2);border-bottom:1px solid var(--line-2);
  padding-bottom:2px;transition:color .25s ease,border-color .25s ease;
}
.link-quiet:hover{color:var(--ink);border-color:var(--ink)}

/* =========================================================
   导航
   ========================================================= */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,box-shadow .3s ease;
}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 1px 20px rgba(16,24,40,.05)}
.nav-inner{
  width:min(100% - 48px,1280px);margin-inline:auto;
  height:70px;display:flex;align-items:center;gap:26px;
}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;letter-spacing:-.02em}
.brand-text{font-weight:700}
.brand-text em{font-style:normal}

.nav-links{display:flex;align-items:center;gap:2px;margin-inline:auto}
.nav-links a{
  padding:8px 14px;border-radius:8px;font-size:14.5px;color:var(--ink-2);
  transition:color .22s ease,background .22s ease;
}
.nav-links a:hover{color:var(--ink);background:var(--bg-soft)}

.nav-actions{display:flex;align-items:center;gap:16px}
.nav-login{font-size:14.5px;color:var(--ink-2);transition:color .2s ease}
.nav-login:hover{color:var(--ink)}
.burger{display:none;width:36px;height:32px;border-radius:8px;border:1px solid var(--line-2);padding:0 8px;flex-direction:column;justify-content:center;gap:4px}
.burger i{display:block;height:1.5px;background:var(--ink);border-radius:2px;transition:transform .3s var(--ease),opacity .2s}
.burger.open i:nth-child(1){transform:translateY(2.75px) rotate(45deg)}
.burger.open i:nth-child(2){transform:translateY(-2.75px) rotate(-45deg)}

.nav-sheet{
  display:none;flex-direction:column;padding:6px 24px 18px;
  background:#fff;border-bottom:1px solid var(--line);
}
.nav-sheet a{padding:13px 2px;font-size:15.5px;color:var(--ink-2);border-bottom:1px solid var(--line)}
.nav-sheet a:last-child{border-bottom:0;color:var(--ink);font-weight:600}
.nav-sheet.open{display:flex;animation:sheetIn .3s var(--ease)}
@keyframes sheetIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* =========================================================
   HERO
   ========================================================= */
.hero{position:relative;padding:152px 0 40px;text-align:center}
.hero-glow{
  position:absolute;top:-120px;left:50%;transform:translateX(-50%);
  width:1150px;height:760px;max-width:130vw;pointer-events:none;
  background:
    radial-gradient(560px 340px at 50% 22%,rgba(23,201,154,.13),transparent 70%),
    radial-gradient(420px 300px at 18% 52%,rgba(23,201,154,.10),transparent 72%),
    radial-gradient(420px 300px at 84% 46%,rgba(23,201,154,.10),transparent 72%);
  filter:blur(6px);
}

.hero-title{
  position:relative;
  font-size:clamp(42px,8vw,102px);
  line-height:1.05;
  letter-spacing:-.045em;
  font-weight:800;
  margin-bottom:26px;
  display:flex;flex-direction:column;align-items:center;
}
.hero-title .line{display:flex;align-items:center;justify-content:center}
.hero-title .line:nth-child(2){font-size:.72em;letter-spacing:-.055em;line-height:1.16;margin-top:.06em}
.hero-title .w{
  display:inline-block;
  opacity:1;
}
/* 用过渡而非 keyframes：动画被禁用时文字依然可见 */
html.js .hero-title[data-reveal]{opacity:1;transform:none}
html.js .hero-title .w{
  opacity:0;transform:translateY(.2em);filter:blur(5px);
  /* 兜底：main.js 万一没加载，2.4s 后文字自己显形，绝不留白屏 */
  animation:wordFallback 0s linear 2.4s forwards;
  transition:opacity .9s var(--ease),transform .95s var(--ease),filter .9s var(--ease);
}
@keyframes wordFallback{to{opacity:1;transform:none;filter:blur(0)}}
html.js .hero-title.in .w{opacity:1;transform:none;filter:blur(0)}
html.js .hero-title.in .line:nth-child(2) .w{transition-delay:.14s}
/* o 的槽位跟着 C / reMate 一起入场。这里必须把 width 过渡再列一遍，
   否则会被上面对 .w 的 transition 覆盖，胶囊展开就会跳变而非撑开。 */
html.js .hero-title .word-o{
  opacity:0;transform:translateY(.2em);filter:blur(5px);
  animation:wordFallback 0s linear 2.4s forwards;
  transition:width .5s var(--ease),opacity .9s var(--ease),
             transform .95s var(--ease),filter .9s var(--ease);
}
html.js .hero-title.in .word-o{opacity:1;transform:none;filter:blur(0)}
@keyframes wordUp{from{opacity:0;transform:translateY(.22em)}to{opacity:1;transform:none}}

.hero-sub{
  position:relative;
  max-width:620px;margin:0 auto 34px;
  font-size:clamp(14.5px,1.4vw,16px);
  line-height:1.85;color:var(--ink-2);
  text-wrap:pretty;
}
.hero-cta{
  position:relative;
  display:flex;flex-direction:column;align-items:center;gap:18px;
  margin-bottom:70px;
}

/* =========================================================
   产品界面
   ========================================================= */
.app-wrap{
  position:relative;max-width:1120px;margin:0 auto;
  perspective:1600px;
}
.app{
  position:relative;
  --side-w:204px;
  --asset-w:190px;
  background:#fff;
  border:1px solid var(--line-2);
  border-radius:16px;
  box-shadow:
    0 1px 2px rgba(16,24,40,.04),
    0 14px 28px -12px rgba(16,24,40,.10),
    0 44px 80px -40px rgba(16,24,40,.22);
  overflow:hidden;
  text-align:left;
}
/* 折叠状态 */
.app.collapsed-side{--side-w:0px}
.app.collapsed-asset{--asset-w:0px}
.app.collapsed-side .app-side,
.app.collapsed-asset .app-assets{opacity:0;border-color:transparent;pointer-events:none}
html.js .app{
  transform:translateY(26px) scale(.985);
  opacity:0;
  transition:transform 1.1s var(--ease),opacity 1.1s var(--ease);
}
html.js .app-wrap.in .app{transform:none;opacity:1}

.app-bar{
  height:42px;display:flex;align-items:center;gap:14px;
  padding:0 16px;border-bottom:1px solid var(--line);
  background:#fcfcfd;
}
.tl{display:flex;gap:6px}
.tl i{width:9px;height:9px;border-radius:50%;background:#e3e6ea}
.tl i:nth-child(1){background:#ff6058}
.tl i:nth-child(2){background:#ffbd2e}
.tl i:nth-child(3){background:#28c840}
.app-tools{margin-left:auto;display:flex;gap:14px;color:#b3b9c2}
.app-tools svg{width:15px;height:15px}

.app-body{
  position:relative;display:flex;min-height:430px;
}

/* 侧栏 */
.app-side{
  flex:0 0 auto;width:var(--side-w);overflow:hidden;
  background:#fafbfc;border-right:1px solid var(--line);
  padding:14px 10px;display:flex;flex-direction:column;gap:4px;
  transition:width .46s var(--ease),opacity .28s ease,border-color .28s ease;
}
.side-brand{font-size:11.5px;font-weight:600;color:var(--ink);padding:2px 8px 10px}
.side-nav{display:flex;flex-direction:column;gap:1px}
.side-nav a{
  display:flex;align-items:center;gap:8px;
  padding:6.5px 8px;border-radius:6px;
  font-size:12.2px;color:#4a515c;
  transition:background .35s ease,color .35s ease;
  white-space:nowrap;
}
.side-nav a svg{width:14px;height:14px;flex:0 0 auto;color:#8b929c}
.side-nav a.on{background:#eceff3;color:var(--ink);font-weight:500}
.side-nav a.on svg{color:var(--ink)}
.side-nav a .tag{
  margin-left:auto;font-size:9px;color:#0b8f6e;
  background:var(--mint-soft);border:1px solid #d3f3e7;
  padding:1px 4px;border-radius:4px;
}
.side-group{
  margin-top:6px;padding:8px 8px 2px;
  font-size:11px;color:#8b929c;
  display:flex;justify-content:space-between;
}
.side-group b{font-weight:500;color:#b3b9c2}

/* 主区 */
.app-main{position:relative;flex:1 1 auto;min-width:0;padding:44px 40px 26px;display:flex;flex-direction:column;align-items:center}
.app-h{
  font-size:23px;font-weight:700;letter-spacing:-.03em;margin-bottom:16px;
}
.modes{display:flex;gap:8px;margin-bottom:26px}
.mode{
  font-size:12px;color:#5f6773;padding:5px 12px;border-radius:999px;
  border:1px solid var(--line-2);background:#fff;
  transition:all .3s ease;
}
.mode.on{background:#eef1f5;color:var(--ink);border-color:transparent;font-weight:600}
.mode:hover:not(.on){border-color:#c9ced6;color:var(--ink)}

/* 上限和输入框同宽（560），8 枚胶囊正好一行排完，不留孤零零的第二行 */
.suggest{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-bottom:14px;max-width:560px}
.sg{
  font-size:11.5px;color:#5f6773;padding:3px 8px;border-radius:7px;
  border:1px solid var(--line);background:#fff;
  transition:background .3s ease,color .3s ease,border-color .3s ease;
}
.sg:hover{background:var(--bg-mint);color:var(--mint-deep);border-color:transparent}

.composer{
  width:100%;max-width:560px;
  border:1px solid var(--line-2);border-radius:14px;
  background:#fff;padding:14px 14px 10px;
  box-shadow:0 2px 10px -4px rgba(16,24,40,.08);
}
.composer-ph{
  font-size:12.5px;color:#a8aeb8;min-height:40px;
  line-height:1.6;
}
.composer-ph.typing{color:#5f6773}
.composer-foot{display:flex;align-items:center;margin-top:6px}
.cf-plus{
  width:22px;height:22px;border-radius:50%;border:1px solid var(--line-2);
  display:grid;place-items:center;font-size:14px;color:#8b929c;line-height:1;
}
.cf-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.cf-model{
  display:inline-flex;align-items:center;gap:3px;
  font-size:11px;color:#6b7280;
  padding:3px 8px;border-radius:6px;background:var(--bg-soft);
}
.cf-send{
  width:26px;height:26px;border-radius:50%;background:#e9ecf0;color:#fff;
  display:grid;place-items:center;
  transition:background .3s ease,transform .3s var(--ease);
}
.cf-send.on{background:#0e1116}
/* 输入框下方建议行（对齐在线版） */
.drafts{width:100%;max-width:560px;margin-top:12px;display:flex;flex-direction:column;gap:6px}
.draft-row{
  display:flex;align-items:center;gap:10px;
  height:33px;padding:0 12px;border-radius:9px;
  border:1px solid var(--line);background:#fff;
  font-size:11.5px;color:#5f6773;
}
.draft-row span{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.draft-row svg{width:12px;height:12px;flex:0 0 auto;opacity:.45}

/* 悬浮任务卡 */
.task-card{
  position:absolute;right:26px;bottom:26px;width:272px;
  background:#fff;border:1px solid var(--line-2);border-radius:14px;
  padding:12px 14px;
  box-shadow:0 12px 32px -12px rgba(16,24,40,.22),0 2px 6px rgba(16,24,40,.04);
  opacity:0;transform:translateY(10px) scale(.97);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
  pointer-events:none;
}
.task-card.show{opacity:1;transform:none}
.tc-head{display:flex;align-items:center;gap:6px;font-size:11px;color:#5f6773;margin-bottom:8px}
.tc-head b{margin-left:auto;font-weight:500;color:var(--mint-deep);font-variant-numeric:tabular-nums}
.tc-dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(23,201,154,.18)}
.tc-bar{height:3px;border-radius:99px;background:#eef1f4;overflow:hidden;margin-bottom:10px}
.tc-bar i{display:block;height:100%;width:0;background:var(--mint);border-radius:99px;transition:width .45s var(--ease)}
.tc-steps{display:flex;flex-direction:column;gap:5px;min-height:64px}
.tc-steps .ts{
  display:flex;align-items:center;gap:6px;font-size:10.8px;color:#9aa1ac;
  opacity:0;transform:translateY(4px);transition:all .35s var(--ease);
}
.tc-steps .ts.show{opacity:1;transform:none;color:#5f6773}
.tc-steps .ts i{
  width:12px;height:12px;border-radius:50%;border:1px solid #dfe3e9;
  display:grid;place-items:center;font-size:7px;color:#fff;font-style:normal;
  transition:all .3s ease;flex:0 0 auto;
}
.tc-steps .ts.done i{background:var(--mint);border-color:var(--mint)}
.tc-steps .ts b{margin-left:auto;font-weight:400;color:#b3b9c2;font-size:10px}

/* 右侧资产面板 */
.app-assets{
  flex:0 0 auto;width:var(--asset-w);overflow:hidden;
  background:#fafbfc;border-left:1px solid var(--line);
  padding:14px 10px;display:flex;flex-direction:column;gap:2px;
  transition:width .46s var(--ease),opacity .28s ease,border-color .28s ease;
}
.as-head{
  display:flex;align-items:center;gap:6px;
  padding:2px 8px 10px;font-size:11.5px;font-weight:600;color:var(--ink);
  white-space:nowrap;
}
.as-head b{
  margin-left:auto;font-weight:500;font-size:9.5px;color:#8b929c;
  background:#eef1f4;padding:1px 5px;border-radius:4px;
}
.as-label{font-size:10px;color:#a8aeb8;padding:8px 8px 4px;white-space:nowrap}
.as-item{
  display:flex;align-items:center;gap:7px;padding:6px;border-radius:6px;
  white-space:nowrap;transition:background .25s ease;
}
.as-item:hover{background:#f0f3f6}
.as-item.on{background:#eef7f3}
.as-ico{
  width:20px;height:20px;border-radius:5px;flex:0 0 auto;
  display:grid;place-items:center;
}
.as-ico svg{width:11px;height:11px}
.c-doc{background:#eef2ff;color:#4f6bff}
.c-xls{background:#e9fbf2;color:#0b8f6e}
.c-img{background:#fff3e8;color:#d97706}
.c-ppt{background:#fdeef2;color:#e11d48}
.as-meta{display:flex;flex-direction:column;line-height:1.4;min-width:0}
.as-meta b{
  font-size:10.5px;font-weight:500;color:#3b424d;
  overflow:hidden;text-overflow:ellipsis;
}
.as-meta i{font-style:normal;font-size:9.5px;color:#a8aeb8}

/* 左右折叠开关 */
.panel-toggle{
  position:absolute;top:58px;z-index:8;
  width:22px;height:22px;border-radius:50%;
  display:grid;place-items:center;
  background:#fff;border:1px solid #d8dde3;color:#8b929c;
  box-shadow:0 1px 4px rgba(16,24,40,.16);
  transition:left .46s var(--ease),right .46s var(--ease),
             color .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.panel-toggle svg{width:12px;height:12px;transition:transform .38s var(--ease)}
.panel-toggle:hover{color:var(--ink);border-color:#c3c9d2;box-shadow:0 3px 10px rgba(16,24,40,.18)}
.t-left{left:var(--side-w);transform:translateX(-50%)}
.t-right{right:var(--asset-w);transform:translateX(50%)}
/* 折叠后贴回窗口内侧，避免被 overflow 裁掉半个圆 */
.app.collapsed-side .t-left{left:12px;transform:translateX(0)}
.app.collapsed-asset .t-right{right:12px;transform:translateX(0)}
.app.collapsed-side .t-left svg{transform:rotate(180deg)}
.app.collapsed-asset .t-right svg{transform:rotate(180deg)}

/* =========================================================
   通用区块
   ========================================================= */
.section{position:relative;padding:104px 0}
.sec-head{max-width:660px;margin:0 auto 52px;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:7px;
  height:28px;padding:0 11px;margin-bottom:20px;
  border-radius:7px;background:var(--mint-soft);
  border:1px solid #d5f4e9;
  font-size:12.5px;font-weight:500;color:var(--mint-deep);
  letter-spacing:-.01em;
}
.kicker em{
  font-style:normal;font-size:10.5px;letter-spacing:.09em;
  color:#5fbfa3;text-transform:uppercase;font-weight:600;
}
.sec-head h2{
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.22;letter-spacing:-.04em;font-weight:750;
  margin-bottom:14px;text-wrap:balance;
}
.sec-head p{font-size:clamp(14.5px,1.3vw,15.5px);color:var(--ink-2);line-height:1.8}

/* 揭示 */
html.js [data-reveal]{
  opacity:0;transform:translateY(22px);
  transition:opacity .8s var(--ease),transform .8s var(--ease);
}
html.js [data-reveal].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}

/* =========================================================
   场景卡片
   ========================================================= */
.scene{background:linear-gradient(180deg,#fff 0%,#fcfdfd 100%)}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.sc-card{
  display:grid;grid-template-columns:1fr 260px;gap:0;
  border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;overflow:hidden;
  transition:border-color .35s ease,box-shadow .45s ease,transform .45s var(--ease);
}
.sc-card:hover{
  border-color:#d7dbe1;transform:translateY(-3px);
  box-shadow:0 20px 44px -24px rgba(16,24,40,.22);
}
.sc-body{padding:30px 28px 28px}
.sc-body h3{font-size:19px;font-weight:700;letter-spacing:-.02em;margin-bottom:8px}
.sc-body > p{font-size:13.8px;color:var(--ink-2);line-height:1.7;margin-bottom:16px}
.sc-list{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.sc-list li{position:relative;padding-left:15px;font-size:12.8px;color:#6b7280}
.sc-list li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:5px;height:5px;border-radius:50%;background:#cfd5dd;
}
.sc-tag{
  display:inline-block;font-family:var(--mono);font-size:10.5px;
  color:#8b929c;padding:3px 8px;border-radius:5px;background:var(--bg-soft);
}
.sc-visual{
  background:var(--bg-mint);
  border-left:1px solid #e8f6f1;
  display:grid;place-items:center;padding:22px;
  position:relative;overflow:hidden;
}
.sc-visual::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120px 90px at 70% 20%,rgba(23,201,154,.10),transparent 70%);
}

/* 视觉：报告 */
.v-report{
  width:100%;background:#fff;border:1px solid #e3ede9;border-radius:10px;
  padding:12px;box-shadow:0 8px 20px -12px rgba(16,24,40,.2);
}
.vr-h{font-size:11px;font-weight:600;margin-bottom:10px;color:#2c333d}
.vr-line{height:5px;border-radius:99px;background:#eef1f4;width:var(--w);margin-bottom:6px}
.vr-chart{display:flex;align-items:flex-end;gap:5px;height:62px;margin-top:12px}
.vr-chart i{
  flex:1;height:var(--h);border-radius:3px 3px 1px 1px;
  background:linear-gradient(180deg,#34d8ae,#baf3e2);
  transform-origin:bottom;
}
.in .vr-chart i,.sc-card:hover .vr-chart i{animation:barIn .9s var(--ease) both}
.vr-chart i:nth-child(2){animation-delay:.06s}
.vr-chart i:nth-child(3){animation-delay:.12s}
.vr-chart i:nth-child(4){animation-delay:.18s}
.vr-chart i:nth-child(5){animation-delay:.24s}
.vr-chart i:nth-child(6){animation-delay:.3s}
@keyframes barIn{from{transform:scaleY(.08);opacity:0}}

/* 视觉：文档 */
.v-doc{position:relative;width:100%;height:150px}
.vd-page{
  position:absolute;background:#fff;border:1px solid #e3ede9;border-radius:8px;
  padding:12px;box-shadow:0 8px 20px -14px rgba(16,24,40,.24);
}
.vd-page:nth-child(1){width:64%;left:2%;top:6%;transform:rotate(-4deg);opacity:.85}
.vd-page:nth-child(2){width:70%;right:2%;top:22%;transform:rotate(2.5deg)}
.vd-h{width:46%;height:6px;border-radius:3px;background:#d9e3df;margin-bottom:9px}
.vd-l{height:5px;border-radius:99px;background:#eef1f4;margin-bottom:6px}
.vd-l:nth-child(2){--w:100%}
.vd-blocks{display:flex;gap:5px;margin-top:9px}
.vd-blocks span{flex:1;height:26px;border-radius:4px;background:#eafaf5;border:1px solid #d9f2e9}

/* 视觉：设计 */
.v-design{width:100%}
.vds-frame{
  display:grid;grid-template-columns:1.5fr 1fr;grid-template-rows:52px 52px;gap:6px;
  background:#fff;border:1px solid #e3ede9;border-radius:10px;padding:9px;
  box-shadow:0 8px 20px -14px rgba(16,24,40,.24);
}
.vds-frame div{border-radius:6px}
.vds-a{grid-row:span 2;background:linear-gradient(150deg,#e8fbf4,#d5f5e9);border:1px solid #c9efe2}
.vds-b{background:#f3f5f7;border:1px solid #e6e9ed}
.vds-c{background:#f3f5f7;border:1px solid #e6e9ed}
.vds-dots{display:flex;gap:6px;margin-top:10px}
.vds-dots i{width:18px;height:18px;border-radius:5px}
.vds-dots i:nth-child(1){background:#17c99a}
.vds-dots i:nth-child(2){background:#0e1116}
.vds-dots i:nth-child(3){background:#c8d0d9}
.vds-dots i:nth-child(4){background:#eef1f4;border:1px solid #e0e4e9}

/* 视觉：代码 */
.v-code{
  width:100%;background:#fff;border:1px solid #e3ede9;border-radius:10px;
  overflow:hidden;box-shadow:0 8px 20px -14px rgba(16,24,40,.24);
}
.vc-bar{
  display:flex;align-items:center;gap:5px;height:26px;padding:0 10px;
  border-bottom:1px solid #eef1f4;background:#fcfdfd;
}
.vc-bar i{width:6px;height:6px;border-radius:50%;background:#e3e6ea}
.vc-bar span{margin-left:auto;font-size:9.5px;color:#a8aeb8;font-family:var(--mono)}
.v-code pre{margin:0;padding:12px;font-family:var(--mono);font-size:10.5px;line-height:1.9;color:#4b5563;overflow:auto}
.v-code .k{color:#0b8f6e}
.v-code .f{color:#7c3aed}

/* =========================================================
   能力卡片
   ========================================================= */
.power{background:#fcfdfd;border-block:1px solid var(--line)}
.pw-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pw-card{
  padding:30px 28px 32px;border:1px solid var(--line);border-radius:16px;
  background:#fff;
  transition:border-color .35s ease,box-shadow .4s ease,transform .4s var(--ease);
  transform-style:preserve-3d;will-change:transform;
}
.pw-card:hover{
  border-color:#d7dbe1;transform:translateY(-3px);
  box-shadow:0 18px 40px -26px rgba(16,24,40,.3);
}
.pw-ico{
  width:40px;height:40px;border-radius:11px;
  display:grid;place-items:center;margin-bottom:18px;
  background:var(--bg-mint);border:1px solid #dcf4ea;color:var(--mint-deep);
  transition:transform .45s var(--ease),background .35s ease;
}
.pw-ico svg{width:20px;height:20px}
.pw-card:hover .pw-ico{transform:translateY(-2px) rotate(-5deg);background:#e2f9f1}
.pw-card h3{font-size:16.5px;font-weight:650;letter-spacing:-.015em;margin-bottom:7px}
.pw-card p{font-size:13.4px;color:var(--ink-2);line-height:1.7}

/* =========================================================
   工作流
   ========================================================= */
.flow-track{position:relative;padding-top:34px}
.st-line{
  position:absolute;top:0;left:8%;right:8%;height:1px;background:var(--line-2);
  overflow:hidden;
}
.st-line b{
  display:block;height:100%;width:100%;background:var(--mint);
  transform:scaleX(0);transform-origin:left;
  transition:transform 1.9s cubic-bezier(.4,0,.2,1);
}
.flow-track.in .st-line b{transform:scaleX(1)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.step{position:relative;padding:22px 16px 0}
.st-dot{
  position:absolute;top:-38px;left:16px;width:7px;height:7px;border-radius:50%;
  background:#fff;border:1px solid #cfd5dd;
  transition:background .45s ease,border-color .45s ease,box-shadow .45s ease;
}
.flow-track.in .st-dot{background:var(--mint);border-color:var(--mint);box-shadow:0 0 0 3px rgba(23,201,154,.14)}
.flow-track.in .step:nth-child(2) .st-dot{transition-delay:.32s}
.flow-track.in .step:nth-child(3) .st-dot{transition-delay:.64s}
.flow-track.in .step:nth-child(4) .st-dot{transition-delay:.96s}
.flow-track.in .step:nth-child(5) .st-dot{transition-delay:1.28s}
.st-no{display:block;font-family:var(--mono);font-size:11px;color:#b3b9c2;margin-bottom:10px}
.step h4{font-size:15.5px;font-weight:650;margin-bottom:6px;letter-spacing:-.015em}
.step p{font-size:13px;color:var(--ink-2);line-height:1.7}

/* =========================================================
   生态
   ========================================================= */
.eco{overflow:hidden}
.eco-bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(600px 300px at 50% 40%,rgba(23,201,154,.07),transparent 70%),
    repeating-conic-gradient(from 0deg at 50% 42%,rgba(16,24,40,.028) 0deg 1deg,transparent 1deg 4.6deg);
  mask-image:radial-gradient(58% 62% at 50% 46%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(58% 62% at 50% 46%,#000 0%,transparent 78%);
}
.eco .wrap{position:relative}
.eco-rows{display:flex;flex-direction:column;gap:12px}
.eco-row{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.eco-chip{
  display:inline-flex;align-items:center;gap:9px;
  height:48px;padding:0 20px;border-radius:12px;
  background:#fff;border:1px solid var(--line-2);
  font-size:14.5px;font-weight:500;color:#2c333d;
  box-shadow:0 1px 2px rgba(16,24,40,.04);
  transition:transform .35s var(--ease),box-shadow .35s ease,border-color .35s ease;
}
.eco-chip:hover{transform:translateY(-3px);border-color:#cfd5dd;box-shadow:0 12px 26px -14px rgba(16,24,40,.28)}
.ec{width:18px;height:18px;border-radius:5px;display:block}
.ec-1{background:linear-gradient(140deg,#3ddc97,#0fae83)}
.ec-2{background:linear-gradient(140deg,#7aa8ff,#4361ee)}
.ec-3{background:linear-gradient(140deg,#ffb56b,#f97316)}
.ec-4{background:linear-gradient(140deg,#ff8fab,#e11d48)}
.ec-5{background:linear-gradient(140deg,#b18cff,#7c3aed)}
.ec-6{background:linear-gradient(140deg,#6dd5ed,#2193b0)}

/* =========================================================
   安全
   ========================================================= */
.safe-panel{
  border:1px solid #e4f2ec;border-radius:26px;
  background:
    radial-gradient(500px 260px at 12% 0%,rgba(23,201,154,.10),transparent 70%),
    linear-gradient(180deg,#f6fdfa,#f3fbf8);
  padding:56px 48px 48px;
  position:relative;overflow:hidden;
}
.safe-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(16,24,40,.035) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(16,24,40,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(70% 70% at 80% 20%,#000,transparent 75%);
  -webkit-mask-image:radial-gradient(70% 70% at 80% 20%,#000,transparent 75%);
}
.safe-head{position:relative;margin-bottom:34px}
.safe-head h2{
  font-size:clamp(30px,4vw,42px);letter-spacing:-.04em;font-weight:750;line-height:1.2;
}
.safe-head-row{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:end}
.safe-head-row p{font-size:14px;color:var(--ink-2);line-height:1.8;padding-bottom:6px}
.safe-grid{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.sf-card{
  background:#fff;border:1px solid #e6efeb;border-radius:16px;
  padding:28px 26px 30px;
  transition:transform .4s var(--ease),box-shadow .4s ease;
}
.sf-card:hover{transform:translateY(-3px);box-shadow:0 16px 34px -24px rgba(16,24,40,.28)}
.sf-ico{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:var(--mint-soft);border:1px solid #d5f4e9;color:var(--mint-deep);
  margin-bottom:16px;
}
.sf-ico svg{width:20px;height:20px}
.sf-card h3{font-size:16px;font-weight:650;margin-bottom:7px;letter-spacing:-.015em}
.sf-card p{font-size:13.2px;color:var(--ink-2);line-height:1.75}

/* =========================================================
   下载
   ========================================================= */
.get{padding-bottom:96px}
.get-card{
  border:1px solid var(--line);border-radius:26px;
  background:linear-gradient(180deg,#fff,#fbfdfc);
  padding:56px 56px 44px;
  box-shadow:0 30px 60px -50px rgba(16,24,40,.35);
}
.get-card h2{font-size:clamp(28px,3.8vw,40px);letter-spacing:-.04em;font-weight:750;margin-bottom:12px}
.get-card > p{font-size:14.5px;color:var(--ink-2);margin-bottom:36px}
.get-cols{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.get-col h5{font-size:12.5px;color:#8b929c;font-weight:500;margin-bottom:14px;letter-spacing:.02em}
.dl{
  display:flex;align-items:baseline;gap:14px;
  padding:13px 16px;border-radius:11px;border:1px solid var(--line);
  background:#fff;margin-bottom:8px;
  transition:border-color .3s ease,transform .3s var(--ease),box-shadow .3s ease;
}
.dl:hover{border-color:#cfd5dd;transform:translateX(3px);box-shadow:0 8px 20px -14px rgba(16,24,40,.3)}
.dl b{font-size:14px;font-weight:600;min-width:76px}
.dl span{font-size:12.5px;color:var(--ink-3)}
.qr-row{display:flex;gap:12px}
.qr{
  flex:1;display:flex;flex-direction:column;gap:5px;
  padding:16px;border-radius:12px;border:1px solid var(--line);background:#fff;
  transition:border-color .3s ease,transform .3s var(--ease),box-shadow .3s ease;
}
.qr:hover{border-color:#cfd5dd;transform:translateY(-3px);box-shadow:0 12px 26px -18px rgba(16,24,40,.3)}
.qr-box{
  width:72px;height:72px;border-radius:8px;background:#fff;
  border:1px solid var(--line-2);display:grid;place-items:center;margin-bottom:10px;
  padding:7px;
}
.qr-box img{width:100%;height:100%;display:block}
.qr b{font-size:13.5px;font-weight:600}
.qr > span:last-child{font-size:12px;color:var(--ink-3)}

/* =========================================================
   页脚
   ========================================================= */
.footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:56px 0 0}
.footer-top{display:flex;justify-content:space-between;gap:60px;flex-wrap:wrap;margin-bottom:40px}
.footer-brand{max-width:280px}
.footer-brand p{font-size:13.5px;color:var(--ink-3);margin-top:12px}
.footer-cols{display:flex;gap:72px;flex-wrap:wrap}
.footer-cols h5{font-size:12.5px;color:#8b929c;font-weight:500;margin-bottom:12px}
.footer-cols a{display:block;font-size:13.5px;color:#4b5563;padding:5px 0;transition:color .2s ease}
.footer-cols a:hover{color:var(--ink)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;border-top:1px solid var(--line-2);
  font-size:12.5px;color:var(--ink-3);
}
.footer-bottom em{font-style:normal;color:var(--mint-deep)}

/* 页脚巨型描边字标 —— 只要轮廓不要填充，安静地压在最底部 */
.footer-mark{
  --fm-line:#dfe5eb;
  width:min(100% - 48px,var(--max));
  margin:44px auto 0;
  padding-bottom:28px;
  overflow:hidden;                 /* 字标宽度已精确等于容器，这里只作溢出兜底 */
  text-align:center;
  line-height:0;                   /* 去掉行盒 strut，高度完全由字标撑出 */
  user-select:none;
  pointer-events:none;
}
.fm-word{
  /* 必须是 inline-block：block 级元素的 rect 宽度等于整栏宽，
     main.js 就量不到文字的真实宽度，字号会被算成 100px */
  display:inline-block;
  vertical-align:top;
  /* 兜底 14vw，JS 会按容器实测值改写成精确 px，让字标左右正好抵住内容栏 */
  font-size:var(--fm-size,14vw);
  /* line-height 必须写在有字号的那一层，写父级会按父级 16px 折算成 13px */
  line-height:.9;
  font-weight:800;
  letter-spacing:-.04em;
  white-space:nowrap;
  color:transparent;               /* 字面留空 */
  -webkit-text-stroke:.011em var(--fm-line);   /* 只描一道极细的边 */
}
/* 星标与外框同色同粗细；viewBox 24 → .52em 时 1px 描边约等于 .51 个 viewBox 单位 */
.fm-star{
  display:inline-block;            /* 全局 img,svg{display:block} 会把它挤到下一行 */
  width:.52em;height:.52em;
  margin-left:.1em;
  vertical-align:.02em;
  fill:none;
  stroke:var(--fm-line);
  stroke-width:.51;
  stroke-linejoin:round;
}
/* 浏览器不支持 text-stroke 时退回浅灰实心，至少不会变成隐形 */
@supports not (-webkit-text-stroke:1px #000){
  .fm-word{color:#eef1f5}
}
/* 它压在页面最底部：位移会让 scrollHeight 多出 22px、滚到底时页面一抖，这里只淡入 */
html.js .footer-mark[data-reveal]{transform:none}

/* 回到顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:90;
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--line-2);color:var(--ink-2);
  box-shadow:0 6px 18px -8px rgba(16,24,40,.25);
  opacity:0;transform:translateY(10px) scale(.92);pointer-events:none;
  transition:all .35s var(--ease);
}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{color:var(--ink);transform:translateY(-2px)}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1080px){
  .nav-links{display:none}
  .burger{display:flex}
  .app{--side-w:172px;--asset-w:158px}
  .sc-card{grid-template-columns:1fr}
  .sc-visual{border-left:0;border-top:1px solid #e8f6f1;min-height:180px}
  .sc-visual{order:-1}
  .pw-grid{grid-template-columns:repeat(2,1fr)}
  .safe-head-row{grid-template-columns:1fr;gap:14px;align-items:start}
  .safe-head-row p{padding-bottom:0}
  .safe-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr);gap:8px}
  .st-line{display:none}
  .step{padding:14px 8px 14px 26px}
  .st-dot{top:22px;left:6px}
  .flow-track{padding-top:0}
}

@media (max-width:720px){
  .wrap{width:calc(100% - 36px)}
  .hero{padding:120px 0 30px}
  .section{padding:72px 0}
  .hero-title{font-size:clamp(38px,11vw,64px)}
  .hero-cta{margin-bottom:44px}
  .btn-lg{width:100%;max-width:320px}
  .app-body{min-height:0}
  .app-side,.app-assets{display:none}
  .panel-toggle{display:none}
  .app-main{padding:32px 18px 22px}
  .app-h{font-size:19px}
  .suggest{gap:4px}
  .sg{font-size:10.5px;padding:2px 6px}
  .composer{padding:12px 12px 8px}
  .task-card{position:static;width:100%;margin-top:14px;opacity:1;transform:none;pointer-events:auto}
  .sc-body{padding:24px 20px}
  .pw-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .eco-chip{height:42px;padding:0 14px;font-size:13px}
  .safe-panel{padding:36px 20px 28px;border-radius:20px}
  .get-card{padding:36px 22px 30px;border-radius:20px}
  .get-cols{grid-template-columns:1fr;gap:30px}
  .qr-row{flex-direction:column}
  .footer-cols{gap:44px}
  .nav-login{display:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  html.js .app{opacity:1;transform:none}
  html.js .hero-title .w{opacity:1;transform:none;filter:none}
  html.js .hero-title .word-o{opacity:1;transform:none;filter:none}
  /* 演示卡依赖脚本推进，关闭动效时直接隐藏，避免留下空壳 */
  .task-card{display:none}
}