/* ============================================================
   AI 课课通 aikkt.com · Design System
   青岛开心小牛教育科技有限公司 · AI 教育基础设施
   ============================================================ */
:root{
  --ink:#0b0f2a;
  --body:#1c2140;
  --muted:#5d6686;
  --soft:#8b93b2;
  --line:#e6e9f6;
  --bg:#f7f8ff;
  --panel:#ffffff;

  --indigo:#4f46e5;
  --violet:#7c3aed;
  --fuchsia:#c026d3;
  --pink:#ec4899;
  --cyan:#06b6d4;
  --blue:#3b82f6;
  --emerald:#10b981;
  --amber:#f59e0b;
  --rose:#f43f5e;

  --g-main:linear-gradient(120deg,#4f46e5 0%,#7c3aed 42%,#d946ef 80%,#ec4899 100%);
  --g1:linear-gradient(135deg,#6366f1,#a855f7);
  --g2:linear-gradient(135deg,#8b5cf6,#ec4899);
  --g3:linear-gradient(135deg,#06b6d4,#3b82f6);
  --g4:linear-gradient(135deg,#f59e0b,#f43f5e);
  --g5:linear-gradient(135deg,#10b981,#06b6d4);
  --g6:linear-gradient(135deg,#f43f5e,#8b5cf6);
  --g7:linear-gradient(135deg,#22d3ee,#4f46e5);

  --night:#070a1c;
  --night2:#0d1132;
  --night-line:rgba(255,255,255,.09);

  --r-sm:12px; --r-md:18px; --r-lg:24px; --r-xl:34px; --pill:999px;
  --shadow-xs:0 1px 2px rgba(15,18,50,.05);
  --shadow-sm:0 6px 18px -6px rgba(23,26,72,.10);
  --shadow-md:0 16px 40px -12px rgba(23,26,72,.16);
  --shadow-lg:0 30px 70px -18px rgba(23,26,72,.24);
  --ring:0 0 0 4px rgba(99,102,241,.14);
  --header-h:74px;
  --radius-xl:34px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%}
body{
  font-family:"Inter","HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);color:var(--body);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
::selection{background:#7c3aed;color:#fff}
img,svg{display:block;max-width:100%}
svg[viewBox="0 0 24 24"]{width:24px;height:24px}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;font-weight:800;letter-spacing:-.01em}
h1 em,h2 em,h3 em{font-style:normal}

.container{width:min(1220px,92%);margin:0 auto}
.container.narrow{width:min(960px,92%)}

/* ---------- helpers ---------- */
.center{text-align:center}
.muted{color:var(--muted)}
.small{font-size:.88rem}
.gtxt{background:var(--g-main);-webkit-background-clip:text;background-clip:text;color:transparent}
.gtxt-g1{background:var(--g1);-webkit-background-clip:text;background-clip:text;color:transparent}
.gtxt-g2{background:var(--g2);-webkit-background-clip:text;background-clip:text;color:transparent}
.gtxt-g3{background:var(--g3);-webkit-background-clip:text;background-clip:text;color:transparent}
.gtxt-g4{background:var(--g4);-webkit-background-clip:text;background-clip:text;color:transparent}
.gtxt-g5{background:var(--g5);-webkit-background-clip:text;background-clip:text;color:transparent}
.bg-g1{background:var(--g1)}.bg-g2{background:var(--g2)}.bg-g3{background:var(--g3)}
.bg-g4{background:var(--g4)}.bg-g5{background:var(--g5)}.bg-g6{background:var(--g6)}.bg-g7{background:var(--g7)}
.bg-gmain{background:var(--g-main)}
/* 兼容小程序课程封面命名 v1-v6（数据库 grad 字段） */
.bg-v1{background:var(--g1)}.bg-v2{background:var(--g2)}.bg-v3{background:var(--g3)}
.bg-v4{background:var(--g4)}.bg-v5{background:var(--g5)}.bg-v6{background:var(--g6)}
.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-40{margin-top:40px}
.nowrap{white-space:nowrap}

/* ---------- section scaffolding ---------- */
.section{position:relative;padding:104px 0}
.section.tight{padding:64px 0}
.section.soft{background:linear-gradient(180deg,#f3f4ff,var(--bg))}
.sec-head{max-width:820px;margin:0 auto 56px;text-align:center}
.sec-head.left{margin:0 0 40px;text-align:left}
.sec-head .title{font-size:clamp(1.7rem,3.2vw,2.55rem);margin:16px 0 14px;letter-spacing:-.02em}
.sec-head .sub{color:var(--muted);font-size:1.06rem}
.kicker{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--pill);
  font-size:.8rem;font-weight:700;letter-spacing:.14em;color:#6d28d9;text-transform:uppercase;
  background:rgba(124,58,237,.08);border:1px solid rgba(124,58,237,.18);
}
.kicker .dot{width:8px;height:8px;border-radius:50%;background:var(--g-main);box-shadow:0 0 0 4px rgba(124,58,237,.15)}
.kicker.on-white{color:#fff;background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28)}
.kicker.on-white .dot{background:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.18)}
.kicker.cyber{color:#0e7490;background:rgba(6,182,212,.08);border-color:rgba(6,182,212,.2)}

/* dots / glow decor */
.dots{position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(79,70,229,.10) 1px,transparent 1.4px);
  background-size:26px 26px;opacity:.5}
.dots.light{background-image:radial-gradient(rgba(255,255,255,.18) 1px,transparent 1.4px)}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;pointer-events:none;z-index:0}
.blob.indigo{background:radial-gradient(circle,#6366f1,transparent 70%)}
.blob.violet{background:radial-gradient(circle,#a855f7,transparent 70%)}
.blob.pink{background:radial-gradient(circle,#ec4899,transparent 70%)}
.blob.cyan{background:radial-gradient(circle,#22d3ee,transparent 70%)}
.blob.amber{background:radial-gradient(circle,#f59e0b,transparent 70%)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--pill);font-weight:700;font-size:.98rem;line-height:1;
  white-space:nowrap;transition:transform .25s,box-shadow .25s,background .25s,color .25s,border-color .25s;
  position:relative;overflow:hidden;border:1px solid transparent;
}
.btn:active{transform:scale(.97)}
.arrow{width:18px;height:18px;flex:none}
.btn .arrow{transition:transform .25s}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--g-main);color:#fff;box-shadow:0 12px 26px -10px rgba(124,58,237,.55)}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-80%;width:50%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);
  transform:skewX(-20deg);transition:left .6s;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -12px rgba(124,58,237,.65)}
.btn-primary:hover::after{left:130%}
.btn-outline{background:rgba(255,255,255,.6);border-color:var(--line);color:var(--ink);backdrop-filter:blur(8px)}
.btn-outline:hover{border-color:#c7cbf5;background:#fff;transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:rgba(99,102,241,.08)}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:#1b2150;transform:translateY(-2px)}
.btn-light{background:#fff;color:#4f46e5}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-glass{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.25);backdrop-filter:blur(8px)}
.btn-glass:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:.9rem}
.btn-lg{padding:17px 34px;font-size:1.05rem;border-radius:18px}
.btn-block{width:100%}
.btn.disabled,button:disabled{opacity:.45;cursor:not-allowed;pointer-events:none}

/* ---------- grids / cards ---------- */
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-xs)}
.card-hover{transition:transform .3s,box-shadow .3s,border-color .3s}
.card-hover:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#d6d9f6}

.icon-tile{
  width:58px;height:58px;border-radius:18px;display:flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:var(--shadow-sm);flex:none;
}
.icon-tile.sm{width:46px;height:46px;border-radius:14px}
.icon-tile.lg{width:72px;height:72px;border-radius:22px}
.icon-tile svg{width:26px;height:26px}
.icon-tile.sm svg{width:22px;height:22px}
.icon-tile.lg svg{width:32px;height:32px}
.ic-tint{background:rgba(99,102,241,.1);color:#5b21b6;box-shadow:none}

/* icon-only gradient bubble (many pages) */
.gb{width:52px;height:52px;border-radius:16px;display:flex;align-items:center;justify-content:center;color:#fff;flex:none;box-shadow:var(--shadow-sm)}
.gb svg{width:24px;height:24px}

/* ---------- chips & tags ---------- */
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--pill);
  font-size:.84rem;font-weight:600;background:#eef0ff;color:#4f46e5;border:1px solid #e2e5ff}
.chip.cyan{background:#e7fbff;color:#0e7490;border-color:#ccf1f7}
.chip.rose{background:#fff0f3;color:#be123c;border-color:#ffd9e0}
.chip.amber{background:#fff7e6;color:#b45309;border-color:#ffe8bd}
.chip.green{background:#e8fbf1;color:#047857;border-color:#c7f2dc}
.chip.violet{background:#f6ecff;color:#7e22ce;border-color:#ecd9ff}
.chip.dark{background:#141a3c;color:#cfd4f5;border-color:#222a55}
.chip.on-dark{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.2)}
.chip .dot{width:7px;height:7px;border-radius:50%;background:currentColor;opacity:.8}
.chip svg{width:16px;height:16px;flex:none}

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);
  transition:background .3s,box-shadow .3s,border-color .3s,backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(255,255,255,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(20,24,60,.3);
}
.header-inner{height:var(--header-h);display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{
  width:42px;height:42px;border-radius:13px;flex:none;position:relative;
  background:var(--g-main);display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px -6px rgba(124,58,237,.55);overflow:hidden;
}
.brand-mark::before{content:"";position:absolute;inset:-40% -30%;background:conic-gradient(from 180deg,transparent,rgba(255,255,255,.5),transparent);animation:spin 5s linear infinite;opacity:.55}
.brand-mark svg{width:24px;height:24px;color:#fff;position:relative;z-index:1}
.brand-txt{line-height:1.1}
.brand-txt b{font-size:1.22rem;font-weight:800;color:var(--ink);letter-spacing:.02em}
.brand-txt b span{background:var(--g-main);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-txt small{display:block;font-size:.66rem;color:var(--muted);letter-spacing:.22em;font-weight:600}
.main-nav{display:flex;gap:2px;margin-left:auto;align-items:center}
.nav-link{
  position:relative;padding:8px 13px;border-radius:12px;font-size:.9rem;font-weight:600;color:#3d4468;
  transition:color .2s,background .2s;white-space:nowrap;
}
.nav-link:hover{color:var(--indigo);background:rgba(99,102,241,.08)}
.nav-link.active{color:#5b21b6}
.nav-link.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:4px;height:3px;border-radius:3px;background:var(--g-main);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.btn-login{padding:10px 20px;font-size:.92rem}

/* hamburger */
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;background:rgba(99,102,241,.08);align-items:center;justify-content:center;flex-direction:column;gap:5px;margin-left:auto}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============================================================
   HERO (home)
   ============================================================ */
.hero{position:relative;overflow:hidden;padding:calc(var(--header-h) + 64px) 0 40px;background:linear-gradient(180deg,#f4f3ff 0%,#fbfaff 60%,var(--bg) 100%)}
.hero-grid-lines{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(99,102,241,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(99,102,241,.06) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
          mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 30%,transparent 75%);
}
.hero-aurora{position:absolute;inset:-20% -10%;pointer-events:none;
  background:
    radial-gradient(42% 46% at 12% 8%,rgba(124,58,237,.20),transparent 70%),
    radial-gradient(38% 42% at 88% 6%,rgba(34,211,238,.18),transparent 70%),
    radial-gradient(52% 52% at 82% 86%,rgba(236,72,153,.14),transparent 70%),
    radial-gradient(44% 44% at 8% 90%,rgba(79,70,229,.16),transparent 70%);
  filter:blur(8px);}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--pill);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-xs);font-size:.85rem;font-weight:700;color:#4f46e5}
.hero-eyebrow .live{width:8px;height:8px;border-radius:50%;background:#10b981;position:relative}
.hero-eyebrow .live::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:2px solid rgba(16,185,129,.4);animation:pulse 1.8s infinite}
.hero h1{font-size:clamp(2.35rem,5.4vw,4.05rem);font-weight:850;letter-spacing:-.03em;line-height:1.14;margin:22px 0 22px}
.hero h1 .line-b{display:block}
.hero-desc{font-size:clamp(1rem,1.6vw,1.16rem);color:var(--muted);max-width:560px;line-height:1.9}
.hero-cta{display:flex;gap:14px;margin:34px 0 26px;flex-wrap:wrap}
.hero-note{color:var(--soft);font-size:.9rem;display:flex;align-items:center;gap:8px}
.hero-note svg{width:16px;height:16px;color:#10b981}

/* hero stat strip */
.hero-stats{position:relative;z-index:2;margin-top:64px;background:rgba(255,255,255,.72);border:1px solid var(--line);backdrop-filter:blur(14px);border-radius:var(--r-lg);box-shadow:var(--shadow-md);
  display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden}
.h-stat{padding:26px 22px;text-align:center;position:relative}
.h-stat+.h-stat::before{content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;background:var(--line)}
.h-stat b{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:850;letter-spacing:-.02em;display:block}
.h-stat span{color:var(--muted);font-size:.9rem}

/* hero visual: console mock */
.hero-visual{position:relative}
.visual-wrap{position:relative;z-index:1;
  background:linear-gradient(160deg,rgba(255,255,255,.92),rgba(245,246,255,.86));
  border:1px solid rgba(255,255,255,.8);border-radius:24px;padding:14px;
  box-shadow:0 40px 90px -28px rgba(40,30,120,.35),0 0 0 1px rgba(99,102,241,.06);
  backdrop-filter:blur(12px);
}
.visual-wrap::after{content:"";position:absolute;inset:-2px;border-radius:26px;padding:2px;background:linear-gradient(130deg,rgba(255,255,255,0) 30%,rgba(255,255,255,.9) 50%,rgba(255,255,255,0) 70%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.window-bar{display:flex;align-items:center;gap:8px;padding:6px 10px 12px}
.window-bar i{width:11px;height:11px;border-radius:50%;display:block}
.window-bar i:nth-child(1){background:#ff5f57}.window-bar i:nth-child(2){background:#febc2e}.window-bar i:nth-child(3){background:#28c840}
.window-bar .url{flex:1;margin-left:6px;background:#f1f2fb;border:1px solid var(--line);border-radius:8px;font-size:.72rem;color:var(--muted);padding:4px 12px;letter-spacing:.02em;white-space:nowrap;overflow:hidden}
.console-body{display:grid;grid-template-columns:172px 1fr;gap:12px;min-height:380px}
.console-side{border-radius:16px;background:#0d1030;padding:14px 10px;display:flex;flex-direction:column;gap:4px}
.console-logo{display:flex;align-items:center;gap:8px;padding:4px 8px 14px;color:#fff;font-size:.85rem;font-weight:800}
.console-logo svg{width:20px;height:20px;color:#a5b4fc}
.console-logo small{font-weight:600;opacity:.6;font-size:.7rem}
.cs-item{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:9px;color:#aeb6e4;font-size:.78rem;font-weight:600}
.cs-item svg{width:15px;height:15px;opacity:.9;flex:none}
.cs-item.active{background:linear-gradient(90deg,rgba(124,58,237,.35),rgba(124,58,237,.06));color:#fff}
.cs-item.active::after{margin-left:auto;content:"";width:6px;height:6px;border-radius:50%;background:#22d3ee;box-shadow:0 0 8px #22d3ee}
.console-main{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column}
.cm-head{display:flex;align-items:center;gap:10px;padding:13px 16px;border-bottom:1px solid var(--line);background:#fbfbfe}
.cm-head b{display:inline-flex;align-items:center;gap:6px;font-size:.9rem;color:var(--ink)}
.cm-head b svg{width:18px;height:18px;color:#7c3aed;flex:none}
.cm-head .pill{margin-left:auto;display:flex;gap:6px}
.cm-body{padding:16px;display:flex;flex-direction:column;gap:12px;flex:1}
.cm-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.cm-kpi{border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:#fcfcff}
.cm-kpi span{font-size:.68rem;color:var(--muted)}
.cm-kpi b{font-size:1.05rem;font-weight:800;color:var(--ink);display:block;line-height:1.2}
.cm-kpi b i{font-style:normal;font-size:.72rem;color:var(--muted);font-weight:600}
.cm-row{display:grid;grid-template-columns:1.25fr .85fr;gap:10px;flex:1}
.chart-panel{border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;flex-direction:column;background:#fcfcff}
.chart-panel h5{font-size:.78rem;color:var(--muted);font-weight:700;display:flex;justify-content:space-between}
.chart-panel h5 em{font-style:normal;color:#10b981;font-weight:800}
.bars{display:flex;align-items:flex-end;gap:8px;flex:1;margin-top:10px}
.bar{flex:1;border-radius:6px 6px 3px 3px;position:relative;min-height:6px}
.bar i{position:absolute;top:-5px;left:0;right:0;text-align:center;font-size:.62rem;color:var(--muted);font-style:normal}
.agent-flow{border:1px solid var(--line);border-radius:14px;padding:12px;background:#fcfcff;display:flex;flex-direction:column;gap:8px}
.agent-flow h5{font-size:.78rem;color:var(--muted)}
.af-node{display:flex;align-items:center;gap:8px;font-size:.72rem;font-weight:700;color:var(--ink)}
.af-node .tag{font-size:.6rem;padding:2px 8px;border-radius:20px;background:#eef0ff;color:#5b21b6;margin-left:auto}
.af-link{width:1px;height:12px;background:#dfe2fb;margin-left:11px}
.chart-line{position:relative;flex:1;margin-top:8px}
.chart-line svg{width:100%;height:100%}
.console-msg{position:relative;margin-top:-10px;border-top:1px dashed var(--line);padding-top:10px}
.cm-msg{display:flex;gap:8px;font-size:.68rem;color:var(--muted);align-items:center}
.cm-msg .status{width:8px;height:8px;border-radius:50%;background:#10b981;box-shadow:0 0 0 4px rgba(16,185,129,.15)}

/* floating chips */
.float-chip{position:absolute;z-index:3;display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);
  border:1px solid #fff;border-radius:14px;padding:11px 15px;box-shadow:var(--shadow-md);font-size:.82rem;font-weight:700;color:var(--ink)}
.float-chip .ic{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;flex:none}
.float-chip .ic svg{width:17px;height:17px}
.float-chip small{display:block;font-weight:500;color:var(--muted);font-size:.68rem}
.float-chip .num{font-size:1rem;font-weight:850}
.chip-a{top:6%;left:-7%;animation:floaty 6s ease-in-out infinite}
.chip-b{bottom:20%;right:-9%;animation:floaty 7s ease-in-out 1s infinite}
.chip-c{bottom:-6%;left:6%;animation:floaty 6.4s ease-in-out .4s infinite}

/* ============================================================
   generic blocks reused across pages
   ============================================================ */
/* capability cards (home) */
.cap-card{position:relative;padding:30px;border-radius:var(--r-lg);background:var(--panel);border:1px solid var(--line);
  display:flex;flex-direction:column;gap:15px;overflow:hidden;transition:.3s;box-shadow:var(--shadow-xs)}
.cap-card::before{content:"";position:absolute;top:0;left:26px;right:26px;height:3px;border-radius:0 0 4px 4px;background:var(--g-main);opacity:0;transition:.35s}
.cap-card:hover::before{opacity:1}
.cap-card h3{font-size:1.18rem}
.cap-card p{color:var(--muted);font-size:.96rem;flex:1}
.cap-card .more{color:#5b21b6;font-weight:700;font-size:.92rem;display:inline-flex;align-items:center;gap:6px}
.cap-card .more .arrow{transition:transform .25s}
.cap-card:hover .more .arrow{transform:translateX(4px)}

/* role cards (who runs on platform) */
.role-card{padding:28px 26px;border-radius:var(--r-lg);background:var(--panel);border:1px solid var(--line);transition:.3s;display:flex;gap:16px;align-items:flex-start}
.role-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.role-card h4{font-size:1.04rem;margin-bottom:5px}
.role-card p{color:var(--muted);font-size:.9rem}

/* platform cards for existing products */
.plat-card{border-radius:var(--r-lg);overflow:hidden;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;transition:.35s;box-shadow:var(--shadow-xs)}
.plat-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.plat-head{padding:26px 26px 22px;color:#fff;position:relative;overflow:hidden}
.plat-head::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 0%,rgba(255,255,255,.35),transparent 55%)}
.plat-head .brand-mini{display:flex;align-items:center;gap:10px;position:relative;z-index:1}
.plat-head .brand-mini svg{width:30px;height:30px;filter:drop-shadow(0 4px 8px rgba(0,0,0,.18))}
.plat-head h3{color:#fff;font-size:1.22rem;margin-top:16px;position:relative;z-index:1}
.plat-head p{color:rgba(255,255,255,.85);font-size:.9rem;margin-top:6px;position:relative;z-index:1}
.plat-body{padding:20px 26px 24px;display:flex;flex-direction:column;gap:13px;flex:1}
.plat-tags{display:flex;flex-wrap:wrap;gap:8px}
.plat-cta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px dashed var(--line)}
.plat-cta .go{color:#4f46e5;font-weight:800;font-size:.92rem;display:inline-flex;align-items:center;gap:6px}
.plat-cta .go .arrow{transition:transform .25s}
.plat-card:hover .plat-cta .go .arrow{transform:translateX(4px)}

/* deploy mode */
.dmode-card{position:relative;padding:34px 28px;border-radius:var(--r-lg);color:#fff;overflow:hidden;min-height:280px;display:flex;flex-direction:column;gap:12px;transition:transform .3s,box-shadow .3s}
.dmode-card:hover{transform:translateY(-6px)}
.dmode-card .num{font-size:.9rem;font-weight:800;opacity:.75;letter-spacing:.2em}
.dmode-card h3{color:#fff;font-size:1.4rem}
.dmode-card p{color:rgba(255,255,255,.88);font-size:.95rem;flex:1}
.dmode-card .foot{font-size:.8rem;opacity:.8;display:flex;gap:10px;flex-wrap:wrap}
.dmode-card .foot b{background:rgba(255,255,255,.16);padding:3px 10px;border-radius:20px;font-weight:600}
.dmode-card svg.big{position:absolute;right:-22px;bottom:-22px;width:150px;height:150px;opacity:.16;transform:rotate(-12deg)}

/* architecture diagram */
.arch{background:radial-gradient(1100px 600px at 50% -10%,rgba(124,58,237,.18),transparent 60%),var(--night);color:#cdd3f0}
.arch h2,.arch h3,.arch h4{color:#fff}
.arch .sub{color:#98a0c8}
.layer{background:rgba(255,255,255,.045);border:1px solid var(--night-line);border-radius:var(--r-lg);padding:22px}
.layer-cap{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;font-size:1rem;margin-bottom:16px}
.layer-cap .chip{background:rgba(34,211,238,.12);border-color:rgba(34,211,238,.3);color:#67e8f9}
.node-row{display:flex;gap:10px;flex-wrap:wrap}
.node{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:9px 14px;font-size:.82rem;font-weight:600;color:#dbe0f8;display:inline-flex;align-items:center;gap:8px;transition:.25s}
.node:hover{background:rgba(124,58,237,.22);transform:translateY(-2px)}
.node svg{width:15px;height:15px;color:#a5b4fc;flex:none}
.arch-flow-arrow{display:flex;align-items:center;justify-content:center;gap:8px;color:#6d7ab3;font-size:.75rem;font-weight:700;padding:14px 0 4px;letter-spacing:.2em}
.arch-flow-arrow svg{width:20px;height:20px;color:#8b5cf6}

/* CTA banner */
.cta-banner{position:relative;border-radius:var(--r-xl);padding:70px 40px;color:#fff;text-align:center;overflow:hidden;
  background:linear-gradient(120deg,#1e1b4b 0%,#4c1d95 48%,#9d174d 100%)}
.cta-banner .dots{opacity:.5}
.cta-banner h2{color:#fff;font-size:clamp(1.7rem,3.4vw,2.7rem);margin:18px auto;max-width:760px;letter-spacing:-.02em}
.cta-banner p{color:rgba(255,255,255,.82);max-width:640px;margin:0 auto 34px;font-size:1.06rem}
.cta-banner .or{color:rgba(255,255,255,.6);margin:16px 0;font-size:.9rem}
.cta-banner .cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ============================================================
   SUBPAGE HERO
   ============================================================ */
.page-hero{position:relative;overflow:hidden;padding:calc(var(--header-h) + 58px) 0 60px;background:linear-gradient(180deg,#f0efff 0%,var(--bg) 100%)}
.page-hero.cyan-hero{background:linear-gradient(180deg,#e7fbff 0%,var(--bg) 100%)}
.page-hero.dark{background:radial-gradient(900px 500px at 50% -20%,rgba(124,58,237,.25),transparent 60%),var(--night);color:#c9cff0}
.page-hero.dark h1{color:#fff}
.page-hero.dark .sub{color:#9aa2cc}
.crumbs{display:flex;align-items:center;gap:8px;font-size:.86rem;color:var(--muted);margin-bottom:20px;flex-wrap:wrap}
.crumbs a{color:var(--muted);transition:.2s}
.crumbs a:hover{color:#5b21b6}
.crumbs .sep{opacity:.5}
.crumbs .cur{color:#5b21b6;font-weight:700}
.page-hero h1{font-size:clamp(2.1rem,4.6vw,3.4rem);letter-spacing:-.03em;margin:16px 0 18px;line-height:1.15}
.page-hero h1 .gtxt{display:inline}
.page-hero .sub{font-size:clamp(1rem,1.6vw,1.14rem);color:var(--muted);max-width:760px;line-height:1.9}
.page-hero .sub.on-dark{color:#aab2dd}
.ph-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{position:relative;background:radial-gradient(900px 420px at 85% -10%,rgba(124,58,237,.22),transparent 55%),var(--night);color:#9aa3cf;overflow:hidden}
.site-footer::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 0%,#000,transparent 80%);mask-image:radial-gradient(ellipse 90% 80% at 50% 0%,#000,transparent 80%)}
.footer-top{position:relative;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.15fr;gap:40px;padding:72px 0 44px}
.footer-brand .brand-txt b{color:#fff}
.footer-brand .brand-txt b span{background:var(--g-main);-webkit-background-clip:text;background-clip:text;color:transparent}
.footer-brand .brand-txt small{color:#7a84b8}
.footer-brand p{font-size:.94rem;margin:18px 0;max-width:320px;line-height:1.9}
.footer-socs{display:flex;gap:10px}
.soc{width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);color:#c3c9ec;transition:.25s}
.soc:hover{background:var(--g-main);color:#fff;transform:translateY(-3px)}
.soc svg{width:18px;height:18px}
.footer-col h5{color:#fff;font-size:.95rem;margin-bottom:20px;font-weight:800}
.footer-col a{display:block;font-size:.92rem;padding:7px 0;color:#9aa3cf;transition:.2s}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-col a.ext{display:inline-flex;align-items:center;gap:5px}
.footer-contact li{display:flex;gap:10px;font-size:.92rem;padding:8px 0;color:#aeb6e2}
.footer-contact svg{width:17px;height:17px;color:#8b5cf6;flex:none;margin-top:4px}
.footer-bottom{position:relative;border-top:1px solid rgba(255,255,255,.07);padding:24px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.84rem;color:#7a84b8}
.footer-bottom .legal{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom a:hover{color:#fff}
.sister-sites{display:flex;gap:10px;flex-wrap:wrap}
.sister-sites a{font-size:.74rem;padding:4px 11px;border-radius:20px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);color:#b7bee4;transition:.2s}
.sister-sites a:hover{background:rgba(124,58,237,.3);color:#fff}

/* ============================================================
   PAGES / components
   ============================================================ */
/* product module rows */
.module{padding:40px 0}
.module+.module{border-top:1px dashed #e3e6f8}
.module-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.module-grid.rev .module-media{order:2}
.module-media{position:relative}
.module-media .stage{border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-md);overflow:hidden}
.module-media .stage img{width:100%}
.module-media .badge-floating{position:absolute;bottom:-18px;right:-12px;padding:16px 20px;border-radius:18px;color:#fff;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:12px}
.module-media .badge-floating svg{width:30px;height:30px;flex:none}
.module-media .badge-floating b{font-size:1.3rem;display:block;line-height:1.1}
.module-media .badge-floating span{font-size:.78rem;opacity:.85}
.feat-list{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.feat{display:flex;gap:13px;align-items:flex-start}
.feat .tick{width:26px;height:26px;border-radius:9px;flex:none;display:flex;align-items:center;justify-content:center;color:#fff;margin-top:2px}
.feat .tick svg{width:14px;height:14px}
.feat b{color:var(--ink);font-weight:750}
.feat p{color:var(--muted);font-size:.9rem;margin-top:2px}

/* visual stages: abstract css previews */
.stage{position:relative;background:linear-gradient(160deg,#f7f7ff,#ffffff)}
.stage-head{display:flex;gap:6px;padding:13px 15px;border-bottom:1px solid var(--line)}
.stage-head i{width:10px;height:10px;border-radius:50%;background:#e3e6f8}
.stage-head i:nth-child(1){background:#ff5f57}.stage-head i:nth-child(2){background:#febc2e}.stage-head i:nth-child(3){background:#28c840}
.stage-body{padding:18px}
.sg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.sg-box{border:1px solid var(--line);border-radius:13px;padding:16px;background:#fff}
.sg-box b{font-size:.86rem;color:var(--ink);display:flex;align-items:center;gap:7px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sg-box b svg{width:16px;height:16px;color:#7c3aed;flex:none}
.sg-box span{font-size:.72rem;color:var(--muted);display:block;margin-top:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sg-tiles{display:flex;flex-wrap:wrap;gap:8px}
.sg-tile{flex:1;min-width:64px;border-radius:11px;padding:12px 8px;color:#fff;text-align:center}
.sg-tile b{display:block;font-size:.9rem}
.sg-tile span{font-size:.62rem;opacity:.85}
.sg-nodes{display:flex;flex-direction:column;gap:8px}
.sg-node{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 10px;font-size:.76rem;color:var(--ink)}
.sg-node .bx{width:8px;height:8px;border-radius:3px;flex:none}
.sg-node .st{margin-left:auto;font-size:.62rem;color:var(--muted)}
.sg-table{width:100%;border-collapse:collapse;font-size:.76rem}
.sg-table td{padding:9px 12px;border-bottom:1px solid var(--line);color:var(--body);vertical-align:middle}
.sg-table td svg{width:16px;height:16px;flex:none;vertical-align:-3px;margin-right:5px}
.sg-table th{text-align:left;color:var(--soft);font-weight:600;padding:8px 12px;border-bottom:1px solid var(--line);font-size:.68rem;letter-spacing:.06em}
.sg-code{background:#0d1030;border-radius:12px;padding:14px;font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:.74rem;color:#c7d2fe;overflow-x:auto;white-space:pre;line-height:1.8}
.sg-code .c{color:#64748b}.sg-code .k{color:#c084fc}.sg-code .s{color:#7dd3fc}.sg-code .n{color:#fbbf24}

/* solution row (industry) */
.sol-card{padding:30px;border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;gap:13px;transition:.3s}
.sol-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.sol-card h4{font-size:1.1rem;display:flex;gap:10px;align-items:center}
.sol-card p{color:var(--muted);font-size:.92rem;flex:1}
.sol-card .tags{display:flex;flex-wrap:wrap;gap:7px}

/* market / shop cards */
.filter-bar{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.fchip{padding:9px 18px;border-radius:var(--pill);border:1px solid var(--line);background:#fff;color:var(--muted);font-weight:650;font-size:.9rem;transition:.22s}
.fchip:hover{border-color:#b9bef7;color:#4f46e5}
.fchip.active{background:var(--g-main);color:#fff;border-color:transparent;box-shadow:0 8px 18px -8px rgba(124,58,237,.5)}
.shop-card{border-radius:var(--r-lg);overflow:hidden;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;transition:.32s}
.shop-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.shop-thumb{position:relative;padding:30px 22px;text-align:center;color:#fff;overflow:hidden}
.shop-thumb .thumb-ic{width:64px;height:64px;border-radius:20px;background:rgba(255,255,255,.2);backdrop-filter:blur(6px);margin:0 auto;display:flex;align-items:center;justify-content:center}
.shop-thumb .thumb-ic svg{width:30px;height:30px}
.shop-thumb .type{position:absolute;top:14px;left:14px;font-size:.66rem;padding:4px 10px;border-radius:20px;background:rgba(255,255,255,.22);font-weight:700}
.shop-thumb .star{position:absolute;top:14px;right:14px;background:rgba(15,23,42,.45);color:#ffd166;font-size:.7rem;font-weight:800;padding:4px 10px;border-radius:20px;display:flex;gap:4px;align-items:center}
.shop-thumb .star svg{width:11px;height:11px}
.shop-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.shop-body h4{font-size:1.02rem}
.shop-body p{color:var(--muted);font-size:.86rem;flex:1}
.shop-meta{display:flex;justify-content:space-between;align-items:center;padding-top:12px;border-top:1px dashed var(--line)}
.shop-price b{font-size:1.15rem;color:var(--ink)}
.shop-price small{color:var(--soft);font-size:.75rem;margin-left:3px}
.shop-vendor{font-size:.76rem;color:var(--soft);display:flex;align-items:center;gap:6px}
.shop-vendor .ava{width:22px;height:22px;border-radius:50%;background:var(--g-main);color:#fff;font-size:.6rem;display:flex;align-items:center;justify-content:center;font-weight:800}

/* list with arrows (market / vendors) */
.point-list{display:flex;flex-direction:column;gap:12px}
.point-list li{display:flex;gap:11px;font-size:.96rem;color:var(--body)}
.point-list li svg{width:18px;height:18px;color:#7c3aed;flex:none;margin-top:4px}

/* partner type cards */
.pt-card{position:relative;border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);padding:34px 28px;overflow:hidden;transition:.32s}
.pt-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.pt-card .pt-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.pt-card h3{font-size:1.28rem}
.pt-card .desc{color:var(--muted);font-size:.95rem}
.pt-card ul{margin:18px 0 24px;display:flex;flex-direction:column;gap:10px}
.pt-card ul li{display:flex;gap:10px;font-size:.9rem;color:var(--body);align-items:center}
.pt-card ul li svg{width:17px;height:17px;color:#10b981;flex:none}
.pt-card .badge{position:absolute;top:16px;right:-44px;transform:rotate(45deg);background:var(--g-main);color:#fff;font-size:.66rem;font-weight:800;letter-spacing:.1em;padding:7px 54px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 22px 24px;counter-increment:step}
.step::before{content:"0" counter(step);font-size:.95rem;font-weight:850;background:var(--g-main);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:.05em}
.step h4{margin:10px 0 8px;font-size:1.05rem}
.step p{color:var(--muted);font-size:.88rem}
.step+.step::after{content:"→";position:absolute;left:-24px;top:50%;transform:translateY(-50%);color:#c3c8f0;font-size:1.4rem;font-weight:700;z-index:2}

/* forms */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:40px;box-shadow:var(--shadow-sm)}
.field{margin-bottom:20px}
.field label{display:block;font-size:.9rem;font-weight:700;color:var(--ink);margin-bottom:8px}
.field label i{color:var(--rose);font-style:normal}
.field .hint{font-size:.78rem;color:var(--soft);margin-top:6px}
.input,.select,.textarea{
  width:100%;padding:13px 16px;border-radius:13px;border:1px solid var(--line);background:#fbfbfe;
  font-family:inherit;font-size:.96rem;color:var(--ink);transition:.2s;outline:none;appearance:none;
}
.input:focus,.select:focus,.textarea:focus{border-color:#8b5cf6;box-shadow:var(--ring);background:#fff}
.select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236366f1' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.textarea{min-height:120px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-msg{display:none;align-items:center;gap:10px;padding:14px 18px;border-radius:13px;font-size:.92rem;font-weight:650;margin-bottom:20px}
.form-msg.ok{display:flex;background:#e8fbf1;color:#047857;border:1px solid #c7f2dc}
.form-msg.err{display:flex;background:#fff0f3;color:#be123c;border:1px solid #ffd9e0}
.form-msg svg{width:18px;height:18px;flex:none}
.apply-note{display:flex;align-items:center;justify-content:center;gap:6px}
.apply-note svg{width:16px;height:16px;flex:none;opacity:.75}

/* pricing */
.price-switch{display:inline-flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);padding:8px;border-radius:var(--pill);margin-bottom:14px}
.sw-lbl{font-size:.9rem;font-weight:700;color:var(--muted);padding:4px 12px;border-radius:var(--pill);transition:.2s;cursor:pointer}
.sw-lbl.on{color:#fff;background:var(--g-main)}
.switch-track{width:48px;height:26px;border-radius:20px;background:#dfe2f8;position:relative;cursor:pointer;transition:.25s}
.switch-track::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:.25s;box-shadow:0 2px 6px rgba(20,24,60,.2)}
.price-grid.on .switch-track{background:var(--g-main)}
.price-grid.on .switch-track::after{left:25px}
.price-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:38px 30px;display:flex;flex-direction:column;transition:.3s}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.price-card.hot{border-color:#7c3aed;box-shadow:0 26px 70px -22px rgba(124,58,237,.4);background:linear-gradient(180deg,#fff, #faf9ff)}
.price-card .hot-flag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--g-main);color:#fff;padding:6px 18px;border-radius:var(--pill);font-size:.78rem;font-weight:800;white-space:nowrap}
.price-card h3{font-size:1.2rem;display:flex;gap:9px;align-items:center}
.price-card .p-note{color:var(--soft);font-size:.86rem;margin-top:6px;min-height:44px}
.price-amt{display:flex;align-items:baseline;gap:4px;margin:20px 0 6px}
.price-amt b{font-size:2.6rem;font-weight:850;letter-spacing:-.03em}
.price-amt span{color:var(--muted);font-size:.9rem}
.price-card ul{display:flex;flex-direction:column;gap:11px;margin:22px 0 28px;flex:1}
.price-card ul li{display:flex;gap:9px;font-size:.92rem;color:var(--body);align-items:flex-start}
.price-card ul li svg{width:17px;height:17px;color:#7c3aed;flex:none;margin-top:4px}
.price-card ul li.no{color:var(--soft)}
.price-card ul li.no svg{color:#c3c8e4}
.price-note{font-size:.8rem;color:var(--soft);text-align:center;margin-top:22px;line-height:1.8}

/* api price table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;box-shadow:var(--shadow-xs)}
.pricetable{width:100%;border-collapse:collapse;min-width:760px;font-size:.95rem}
.pricetable th{background:#f4f5ff;color:var(--ink);text-align:left;padding:15px 20px;font-size:.85rem;letter-spacing:.04em;border-bottom:1px solid var(--line)}
.pricetable td{padding:15px 20px;border-bottom:1px solid var(--line);color:var(--body)}
.pricetable tr:last-child td{border-bottom:none}
.pricetable tr:hover td{background:#fafaff}
.pricetable .api{font-family:ui-monospace,Consolas,monospace;font-size:.85rem;color:#5b21b6;font-weight:600;white-space:nowrap}
.pricetable .free{color:#10b981;font-weight:800}
.pricetable .tag-inline{font-size:.72rem;padding:2px 9px;border-radius:20px;background:#eef0ff;color:#4f46e5;font-weight:700}

/* docs */
.docs-grid{display:grid;grid-template-columns:300px 1fr;gap:40px;align-items:start}
.docs-side{position:sticky;top:calc(var(--header-h) + 22px)}
.doc-search{position:relative;margin-bottom:16px}
.doc-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:17px;height:17px;color:var(--soft)}
.doc-search input{width:100%;padding:12px 14px 12px 42px;border-radius:13px;border:1px solid var(--line);background:#fff;outline:none;font-family:inherit;transition:.2s}
.doc-search input:focus{border-color:#8b5cf6;box-shadow:var(--ring)}
.doc-nav{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:10px;overflow:hidden}
.doc-nav .group{font-size:.72rem;letter-spacing:.16em;color:var(--soft);font-weight:800;padding:16px 14px 7px}
.doc-nav .group:first-child{padding-top:8px}
.doc-nav a{display:flex;gap:9px;align-items:center;padding:9px 12px;border-radius:10px;color:var(--muted);font-size:.9rem;font-weight:600;transition:.18s}
.doc-nav a svg{width:16px;height:16px;opacity:.8;flex:none}
.doc-nav a:hover{background:#f1f2ff;color:#5b21b6}
.doc-nav a.active{background:var(--g-main);color:#fff}
.docs-main{min-width:0}
.doc-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 26px;transition:.25s;position:relative;overflow:hidden}
.doc-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#d6d9f6}
.doc-card .go{position:absolute;right:20px;top:50%;transform:translateY(-50%);color:#c3c8f0;transition:.25s}
.doc-card:hover .go{color:#7c3aed;transform:translateY(-50%) translateX(4px)}
.doc-card h4{font-size:1.02rem;margin:12px 0 6px}
.doc-card p{color:var(--muted);font-size:.88rem;line-height:1.7}
.doc-card .tag{font-size:.7rem;font-weight:800;padding:3px 10px;border-radius:20px}
.codeblock{background:#0d1030;border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-sm);margin-top:22px}
.code-head{display:flex;align-items:center;gap:8px;padding:11px 16px;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.02)}
.code-head i{width:10px;height:10px;border-radius:50%;background:#30365f}
.code-head span{font-family:ui-monospace,Consolas,monospace;font-size:.74rem;color:#7a84b8}
.code-head .lang{margin-left:auto;font-size:.66rem;color:#8b5cf6;background:rgba(139,92,246,.15);padding:2px 9px;border-radius:20px;font-weight:800}
.codebody{padding:18px;overflow-x:auto}
.codebody pre{font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:.82rem;line-height:1.85;color:#d3d9ff;white-space:pre}
.codebody .cm{color:#5c669a}.codebody .kw{color:#c084fc}.codebody .st{color:#7dd3fc}.codebody .fn{color:#7ee0b8}.codebody .num{color:#fbbf24}.codebody .pr{color:#f472b6}
.doc-list{display:flex;flex-direction:column;gap:14px}
.doc-api-row{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 18px;transition:.2s}
.doc-api-row:hover{border-color:#c7cbf5;box-shadow:var(--shadow-xs);transform:translateX(3px)}
.method{font-size:.68rem;font-weight:800;padding:3px 10px;border-radius:7px;color:#fff;flex:none;font-family:ui-monospace,Consolas,monospace}
.method.GET{background:#10b981}.method.POST{background:#3b82f6}.method.PUT{background:#f59e0b}.method.DELETE{background:#f43f5e}
.doc-api-row .path{font-family:ui-monospace,Consolas,monospace;font-size:.9rem;color:var(--ink);font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.doc-api-row .desc{color:var(--soft);font-size:.8rem;margin-left:auto;flex:none}

/* timeline (about) */
.tl{position:relative;padding-left:34px}
.tl::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,#4f46e5,#ec4899)}
.tl-item{position:relative;padding-bottom:38px}
.tl-item::before{content:"";position:absolute;left:-33px;top:6px;width:20px;height:20px;border-radius:50%;background:#fff;border:5px solid #7c3aed;box-shadow:0 0 0 6px rgba(124,58,237,.12)}
.tl-item:last-child{padding-bottom:0}
.tl-item h4{font-size:1.1rem;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.tl-item .year{font-size:.8rem;font-weight:850;padding:4px 13px;border-radius:20px;background:var(--g-main);color:#fff}
.tl-item p{color:var(--muted);font-size:.94rem;margin-top:8px;max-width:680px}

/* value cards */
.mv-card{position:relative;border-radius:var(--r-xl);padding:40px 34px;color:#fff;overflow:hidden;transition:.3s}
.mv-card:hover{transform:translateY(-6px)}
.mv-card .mv-ic{width:70px;height:70px;border-radius:22px;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;margin-bottom:26px;backdrop-filter:blur(6px)}
.mv-card .mv-ic svg{width:32px;height:32px}
.mv-card .en{display:block;font-size:.76rem;letter-spacing:.24em;opacity:.7;font-weight:800;margin-bottom:8px}
.mv-card h3{color:#fff;font-size:1.5rem;margin-bottom:14px}
.mv-card p{color:rgba(255,255,255,.9);font-size:.96rem;line-height:2}

/* cases */
.case-card{border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);overflow:hidden;transition:.32s}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.case-cover{height:150px;padding:22px 24px;display:flex;align-items:flex-start;justify-content:space-between;color:#fff}
.case-cover .logo-tag{display:flex;gap:12px;align-items:center}
.case-cover .logo-tag .mk{width:44px;height:44px;border-radius:14px;background:rgba(255,255,255,.22);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1.3rem}
.case-cover .type{font-size:.72rem;font-weight:800;padding:5px 12px;border-radius:20px;background:rgba(255,255,255,.2)}
.case-body{padding:22px 24px;display:flex;flex-direction:column;gap:14px}
.case-body h4{font-size:1.05rem}
.case-body .metric{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.metric .m{background:#f6f7ff;border-radius:12px;padding:10px;text-align:center}
.metric .m b{display:block;font-size:1.02rem;font-weight:850;color:var(--ink)}
.metric .m span{font-size:.66rem;color:var(--muted)}
.quote-card{background:linear-gradient(180deg,#fff,#fbfbff);border:1px solid var(--line);border-radius:var(--r-xl);padding:40px}
.quote-card blockquote{font-size:1.3rem;font-weight:700;color:var(--ink);line-height:1.8;letter-spacing:-.01em}
.quote-card blockquote::before{content:"“";color:#c7cbf5;font-size:4rem;display:block;height:20px;font-family:Georgia,serif;margin-bottom:-6px}
.quote-card footer{margin-top:22px;display:flex;gap:13px;align-items:center}
.quote-card footer .who{width:46px;height:46px;border-radius:50%;background:var(--g-main);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}

/* login / console page */
.console-page{min-height:100vh;position:relative;display:flex;align-items:center;justify-content:center;padding:110px 20px 60px;overflow:hidden;
  background:radial-gradient(700px 480px at 15% 10%,rgba(124,58,237,.16),transparent 60%),radial-gradient(700px 480px at 90% 0%,rgba(34,211,238,.14),transparent 60%),var(--night);}
.console-shell{width:min(1040px,100%);position:relative;z-index:2}
.console-head{text-align:center;margin-bottom:38px}
.console-head .brand-mark{margin:0 auto 20px;width:64px;height:64px;border-radius:20px}
.console-head .brand-mark svg{width:34px;height:34px}
.console-head h1{color:#fff;font-size:clamp(1.8rem,3.6vw,2.6rem);margin-top:18px}
.console-head p{color:#9aa2cc;margin-top:10px;max-width:520px;margin-left:auto;margin-right:auto}
.role-panel{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.role-tile{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:22px;padding:30px 20px;text-align:center;color:#fff;position:relative;transition:.28s;display:flex;flex-direction:column;align-items:center;gap:13px}
.role-tile:hover{background:rgba(124,58,237,.18);transform:translateY(-5px);border-color:rgba(167,139,250,.4)}
.role-tile .rt-ic{width:60px;height:60px;border-radius:19px;display:flex;align-items:center;justify-content:center}
.role-tile .rt-ic svg{width:28px;height:28px}
.role-tile b{font-size:1.02rem}
.role-tile span{font-size:.8rem;color:#9aa2cc;line-height:1.7}
.role-tile .soon{position:absolute;top:14px;right:-24px;transform:rotate(45deg);background:var(--g-main);font-size:.6rem;letter-spacing:.12em;padding:5px 34px;font-weight:800}
.console-divider{display:flex;align-items:center;gap:16px;color:#7a84b8;font-size:.82rem;margin:34px 0}
.console-divider::before,.console-divider::after{content:"";flex:1;height:1px;background:rgba(255,255,255,.1)}
.console-links{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.console-links a{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:14px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);color:#c9cff0;font-size:.9rem;font-weight:650;transition:.2s}
.console-links a:hover{background:#fff;color:#4f46e5;transform:translateY(-2px)}
.console-links a svg{width:16px;height:16px}

/* ---------- login / register card ---------- */
.auth-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:24px;padding:28px;max-width:440px;margin:0 auto 34px;backdrop-filter:blur(12px);box-shadow:0 24px 60px -20px rgba(0,0,0,.35)}
.auth-tabs{display:flex;gap:6px;margin-bottom:22px;padding:6px;border-radius:14px;background:rgba(0,0,0,.2)}
.auth-tab{flex:1;text-align:center;padding:10px;border-radius:11px;color:#9aa2cc;font-weight:700;font-size:.92rem;background:transparent;border:none;cursor:pointer;transition:.2s}
.auth-tab:hover{color:#fff}
.auth-tab.active{background:linear-gradient(135deg,rgba(124,58,237,.45),rgba(79,70,229,.35));color:#fff;box-shadow:0 6px 18px -8px rgba(124,58,237,.4)}
.auth-form{display:none}
.auth-form.active{display:block}
.input-group{position:relative;margin-bottom:16px}
.input-icon{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:#7a84b8;pointer-events:none}
.input-icon svg{width:18px;height:18px}
.input-field{width:100%;height:52px;padding:0 44px;border-radius:14px;border:1px solid rgba(255,255,255,.12);background:rgba(0,0,0,.18);color:#fff;font-size:.95rem;outline:none;transition:.2s}
.input-field::placeholder{color:#6b7296}
.input-field:focus{border-color:#8b5cf6;background:rgba(0,0,0,.28);box-shadow:0 0 0 4px rgba(124,58,237,.12)}
.password-toggle{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:#7a84b8;background:none;border:none;padding:5px;cursor:pointer;line-height:0;opacity:.65;transition:.2s}
.password-toggle:hover{color:#a5b4fc;opacity:1}
.password-toggle svg{width:18px;height:18px}
.form-options{display:flex;align-items:center;justify-content:space-between;gap:12px;color:#9aa2cc;font-size:.82rem;margin:-6px 0 22px}
.form-options label{display:inline-flex;align-items:center;gap:6px;cursor:pointer}
.form-options input[type=checkbox]{accent-color:#7c3aed;width:14px;height:14px}
.forgot-link{color:#a5b4fc;transition:.2s}
.forgot-link:hover{color:#fff}
.auth-submit{width:100%;height:52px;border-radius:14px;border:none;background:linear-gradient(135deg,#7c3aed,#4f46e5);color:#fff;font-size:1rem;font-weight:800;cursor:pointer;transition:.25s;display:inline-flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 14px 30px -12px rgba(124,58,237,.45)}
.auth-submit:hover{transform:translateY(-2px);box-shadow:0 18px 38px -12px rgba(124,58,237,.55)}
.auth-submit:disabled{opacity:.7;cursor:not-allowed;transform:none}
.auth-message{min-height:22px;margin-top:14px;text-align:center;font-size:.85rem;font-weight:600}
.auth-message.error{color:#f87171}
.auth-message.success{color:#34d399}
.kicker svg{width:16px;height:16px;flex:none}
@media (max-width:520px){
  .auth-card{padding:22px 18px;margin-bottom:26px}
  .auth-tab{font-size:.86rem}
  .form-options{flex-direction:column;align-items:flex-start;gap:10px}
}

/* faq */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:14px;overflow:hidden;transition:.25s}
.faq-item.open{border-color:#c9cdf7;box-shadow:var(--shadow-sm)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:14px;padding:20px 24px;text-align:left;font-size:1.02rem;font-weight:750;color:var(--ink)}
.faq-q .fx{width:28px;height:28px;border-radius:9px;background:#eef0ff;color:#5b21b6;display:flex;align-items:center;justify-content:center;flex:none;transition:.25s}
.faq-item.open .fx{background:var(--g-main);color:#fff;transform:rotate(45deg)}
.faq-q .fx svg{width:14px;height:14px}
.faq-a{display:none;padding:0 24px 22px;color:var(--muted);font-size:.96rem;line-height:1.9}
.faq-item.open .faq-a{display:block}

/* misc */
.big-quote{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;line-height:1.6;color:var(--ink);letter-spacing:-.02em}
.avatar-strip{display:flex;align-items:center}
.avatar-strip .av{width:40px;height:40px;border-radius:50%;border:3px solid #fff;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.8rem;font-weight:800;margin-right:-10px}
.divider-grad{height:1px;border:none;background:linear-gradient(90deg,transparent,rgba(124,58,237,.4),transparent);margin:0}
.divider-grad.light{background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent)}

/* reveal animation */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s cubic-bezier(.2,.6,.2,1),transform .8s cubic-bezier(.2,.6,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes pulse{0%{transform:scale(1);opacity:1}100%{transform:scale(1.8);opacity:0}}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes growBar{from{height:10%}to{height:var(--h)}}
.bar{animation:growBar 1.4s cubic-bezier(.2,.7,.3,1) .3s both}
@keyframes dashMove{to{stroke-dashoffset:-20}}
@keyframes scrollX{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* marquee */
.marquee{overflow:hidden;position:relative;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;width:max-content;animation:scrollX 36s linear infinite;gap:0}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-item{display:inline-flex;align-items:center;gap:12px;padding:16px 34px;white-space:nowrap;color:#5d6686;font-weight:750;font-size:1.02rem;flex:none}
.marquee-item svg{width:22px;height:22px;color:#7c3aed;flex:none}
.marquee.light .marquee-item{color:#b7bee4}
.marquee.light .marquee-item svg{color:#8b5cf6}

/* back to top */
#toTop{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:14px;background:var(--g-main);color:#fff;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:.3s;z-index:90;box-shadow:0 14px 30px -10px rgba(124,58,237,.55)}
#toTop.show{opacity:1;pointer-events:auto}
#toTop:hover{transform:translateY(-3px)}
#toTop svg{width:20px;height:20px}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1180px){
  .hero-inner{grid-template-columns:1fr;gap:70px}
  .hero-copy{text-align:center}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero-cta,.hero-note{justify-content:center}
  .visual-wrap{max-width:660px;margin:0 auto}
  .chip-a{left:-2%}.chip-b{right:-1%}
  .module-grid{grid-template-columns:1fr;gap:44px}
  .module-media{max-width:640px}
  .module-grid.rev .module-media{order:0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step+.step::after{display:none}
}
@media (max-width:1120px){
  .section{padding:80px 0}
  .g4,.g5{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr;gap:34px}
  .docs-grid{grid-template-columns:1fr}
  .docs-side{position:static}
  .main-nav,.nav-actions .btn-login{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-join{display:none}
  .nav-actions{gap:8px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .h-stat:nth-child(3)::before{display:none}
  .role-panel{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .section{padding:64px 0}
  .sec-head{margin-bottom:38px}
  .g2,.g3{grid-template-columns:1fr}
  .g4,.g5{grid-template-columns:repeat(2,1fr)}
  .container{width:92%}
  .hero{padding-top:calc(var(--header-h) + 36px)}
  .hero h1{font-size:clamp(2rem,9vw,2.6rem)}
  .hero-cta .btn{width:100%;justify-content:center}
  .float-chip{display:none}
  .visual-wrap{padding:10px}
  .console-body{grid-template-columns:1fr}
  .console-side{display:none}
  .hero-stats{margin-top:40px;grid-template-columns:1fr 1fr}
  .h-stat{padding:20px 12px}
  .h-stat+.h-stat::before{display:none}
  .h-stat b{font-size:1.45rem}
  .page-hero{padding-top:calc(var(--header-h) + 30px)}
  .footer-top{grid-template-columns:1fr;gap:28px;padding:54px 0 30px}
  .footer-bottom{justify-content:center;text-align:center}
  .module{padding:20px 0}
  .module-grid{gap:32px}
  .cta-banner{padding:52px 24px;border-radius:26px}
  .form-row{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .role-panel{grid-template-columns:1fr}
  .price-card.hot{order:-1}
  .mt-40{margin-top:26px}
  .console-links a{width:100%}
  .console-head p{max-width:92%}
}
@media (max-width:420px){
  .g4,.g5{grid-template-columns:1fr}
  .g3{grid-template-columns:1fr}
}

/* ============================================================
   MOBILE PANEL & extras
   ============================================================ */
body.no-scroll{overflow:hidden}
.mobile-panel{
  position:fixed;inset:0;top:var(--header-h);z-index:99;background:rgba(248,249,255,.98);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  transform:translateX(105%);transition:transform .38s cubic-bezier(.2,.7,.2,1);
  display:flex;flex-direction:column;padding:26px 6% 40px;overflow-y:auto;
}
.mobile-panel.open{transform:none}
.mp-nav{display:flex;flex-direction:column}
.mp-nav a{padding:15px 4px;font-size:1.18rem;font-weight:800;color:var(--ink);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}
.mp-nav a::after{content:"→";margin-left:auto;color:#c7cbf5;font-weight:700;transition:.2s}
.mp-nav a:active::after{color:#7c3aed}
.mp-actions{display:flex;flex-direction:column;gap:12px;margin-top:26px}
.mp-actions .btn{padding:15px;border-radius:15px}
.btn svg{width:17px;height:17px;flex:none}
.btn-primary svg,.btn-outline svg,.btn-ghost svg,.btn-light svg,.btn-ink svg{opacity:.95}
.nav-link svg,.soc svg,.legal svg{width:16px;height:16px}
.footer-contact-wrap h5{color:#fff;font-size:.95rem;margin-bottom:20px;font-weight:800}
.footer-contact a:hover{color:#fff}
.footer-contact li svg{color:#a78bfa}
.footer-brand .brand .brand-txt b{color:#fff}
.price-grid.on{/* 标记年付态 */}

/* 进度小条（愿景页等通用） */
.mini-bar{height:8px;border-radius:6px;background:#eef0ff;overflow:hidden}
.mini-bar i{display:block;height:100%;border-radius:6px;background:var(--g-main)}

/* 简单 pill 数字 */
.num-pill{font-weight:850;font-size:clamp(1.6rem,3vw,2.4rem);letter-spacing:-.02em;line-height:1}

/* marquee group / inline api code */
.marquee-group{display:flex}
.api{font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:.86rem;color:#5b21b6;font-weight:650;background:#f0efff;padding:1px 7px;border-radius:6px;white-space:nowrap}
.bars{min-height:120px}

/* 深色全屏页（登录/控制台入口）固定顶栏适配 */
body.console-dark .site-header,body.console-dark .site-header.scrolled{background:rgba(8,10,28,.55);border-bottom-color:rgba(255,255,255,.08);box-shadow:none;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
body.console-dark .brand-txt b{color:#fff}
body.console-dark .brand-txt small{color:#8b93bd}
body.console-dark .nav-link{color:#c9cff0}
body.console-dark .nav-link:hover{color:#fff;background:rgba(255,255,255,.1)}
body.console-dark .nav-link.active{color:#fff}
body.console-dark .nav-link.active::after{background:linear-gradient(90deg,#22d3ee,#8b5cf6)}
body.console-dark .btn-outline{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.22);color:#fff}
body.console-dark .btn-outline:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.4)}
body.console-dark .nav-toggle{background:rgba(255,255,255,.1)}
body.console-dark .nav-toggle span{background:#fff}
body.console-dark .mobile-panel{background:rgba(10,12,32,.98);border-top:1px solid rgba(255,255,255,.08)}
body.console-dark .mp-nav a{color:#fff;border-color:rgba(255,255,255,.1)}
body.console-dark .mp-actions .btn-ghost{color:#fff}

/* 表单 checkbox/radio 简化（伙伴资质） */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.ck{position:relative;display:flex;gap:9px;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:13px;background:#fbfbfe;font-size:.9rem;color:var(--body);font-weight:600;cursor:pointer;transition:.2s}
.ck input{position:absolute;opacity:0}
.ck .bx{width:20px;height:20px;border-radius:7px;border:2px solid #d4d7f2;background:#fff;flex:none;display:flex;align-items:center;justify-content:center;color:#fff;transition:.2s}
.ck input:checked ~ .bx{background:var(--g-main);border-color:transparent}
.ck input:checked ~ .bx svg{display:block}
.ck:has(input:checked){border-color:#c7cbf7;background:#f6f6ff}
.ck .bx svg{display:none;width:12px;height:12px}
@media (max-width:720px){.check-grid{grid-template-columns:1fr}}

/* ============================================================
   COURSE CENTER · 课程中心（首页入口 + 列表页）
   ============================================================ */
.course-sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
.course-sec-title{max-width:660px}
.course-sec-title h2{font-size:clamp(1.7rem,3vw,2.3rem);letter-spacing:-.02em;position:relative;padding-left:20px;line-height:1.25}
.course-sec-title h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:7px;border-radius:8px;background:var(--g-main)}
.course-sec-title p{color:var(--muted);font-size:.98rem;margin-top:14px}
.course-more{flex:none;display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink);font-weight:750;font-size:.92rem;transition:.25s}
.course-more:hover{border-color:#c7cbf5;color:#4f46e5;transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.course-more svg{width:16px;height:16px;transition:transform .25s}
.course-more:hover svg{transform:translateX(3px)}

.course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.course-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:transform .32s,box-shadow .32s,border-color .32s;box-shadow:var(--shadow-xs)}
.course-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:#d6d9f6}

/* 封面 */
.cc-cover{position:relative;padding:26px 22px 22px;color:#fff;min-height:150px;overflow:hidden;display:flex;flex-direction:column}
.cc-cover::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 85% 0%,rgba(255,255,255,.38),transparent 52%)}
.cc-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.10),transparent 45%),linear-gradient(0deg,rgba(10,14,40,.26),transparent 52%)}
.cc-badge{position:relative;align-self:flex-start;font-size:.66rem;font-weight:700;letter-spacing:.04em;padding:4px 12px;border-radius:20px;background:rgba(255,255,255,.24);backdrop-filter:blur(4px)}
.cc-brand{position:relative;margin-top:18px;font-size:.72rem;font-weight:800;letter-spacing:.16em;opacity:.92;text-transform:uppercase}
.cc-title{position:relative;color:#fff;font-size:1.34rem;font-weight:900;line-height:1.3;margin-top:6px;letter-spacing:-.01em}
.cc-sub{position:relative;margin-top:auto;font-size:.76rem;color:rgba(255,255,255,.88)}
.cc-ray{position:absolute;right:-30px;bottom:-42px;width:150px;height:150px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.35),transparent 62%)}

/* 卡片正文 */
.cc-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.cc-label{font-size:.62rem;font-weight:800;letter-spacing:.14em;color:var(--soft);text-transform:uppercase}
.cc-name{font-size:1.05rem;line-height:1.4;color:var(--ink);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.cc-desc{color:var(--muted);font-size:.85rem;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.cc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.cc-price{color:#e11d48;font-weight:900;font-size:1.22rem;letter-spacing:-.01em;line-height:1}
.cc-price em{font-style:normal;font-size:.86rem;font-weight:800;margin-right:2px}
.cc-view{display:inline-flex;align-items:center;gap:6px;color:var(--soft);font-size:.78rem;font-weight:650}
.cc-view svg{width:15px;height:15px}

@media (max-width:1120px){.course-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:720px){
  .course-sec-head{flex-direction:column;align-items:flex-start;gap:16px}
  .course-more{align-self:flex-start}
}
@media (max-width:460px){.course-grid{grid-template-columns:1fr}}

/* ============================================================
   COURSE DETAIL · 课程详情页（course.php）
   ============================================================ */
.cd-hero{display:grid;grid-template-columns:1fr 380px;gap:44px;align-items:center}
.cd-hero-copy h1{font-size:clamp(1.9rem,3.6vw,2.9rem);letter-spacing:-.03em;margin:16px 0 12px;line-height:1.18}
.cd-hero-copy .sub{color:var(--muted);font-size:1.05rem}
.cd-hero-cover{position:relative;padding:30px 26px 26px;border-radius:24px;color:#fff;min-height:230px;overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-md)}
.cd-hero-cover::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 85% 0%,rgba(255,255,255,.38),transparent 52%)}
.cd-hero-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.10),transparent 45%),linear-gradient(0deg,rgba(10,14,40,.26),transparent 52%)}
.cd-hero-cover .cc-badge,.cd-hero-cover .cc-brand,.cd-hero-cover .cc-title,.cd-hero-cover .cc-sub{position:relative;z-index:1}
.cd-hero-cover .cc-title{font-size:1.6rem}

/* 提示条 */
.cd-flash{display:flex;align-items:center;gap:10px;padding:14px 18px;border-radius:14px;margin-bottom:26px;font-weight:700;font-size:.96rem}
.cd-flash svg{width:19px;height:19px;flex:none}
.cd-flash.success{background:#ecfdf5;border:1px solid #a7f3d0;color:#047857}
.cd-flash.error{background:#fff1f2;border:1px solid #fecdd3;color:#be123c}
.cd-flash.info{background:#eef2ff;border:1px solid #c7d2fe;color:#4338ca}

/* 主体布局 */
.cd-grid{display:grid;grid-template-columns:1fr 360px;gap:32px;align-items:start}
.cd-main{display:flex;flex-direction:column;gap:22px}
.cd-side{position:sticky;top:calc(var(--header-h) + 20px);display:flex;flex-direction:column;gap:18px}
.cd-block{padding:30px 30px 32px;border-radius:var(--r-lg)}
.cd-block h3{display:flex;align-items:center;gap:10px;font-size:1.25rem;margin-bottom:6px}
.cd-block h3 svg{width:20px;height:20px;color:#7c3aed}
.cd-sub{font-size:.9rem;margin-bottom:14px}
.cd-intro{color:var(--body);font-size:1rem;line-height:2;margin-top:10px}

/* 你将学到 / 适合谁 */
.cd-learn{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:16px}
.cd-learn li{display:flex;gap:11px;align-items:flex-start;font-size:.97rem;color:var(--body);line-height:1.7}
.cd-learn svg{width:19px;height:19px;color:#10b981;flex:none;margin-top:3px}
.cd-suited{display:flex;flex-direction:column;gap:10px;margin-top:16px}
.cd-suited li{position:relative;padding-left:22px;color:var(--body);font-size:.97rem;line-height:1.7}
.cd-suited li::before{content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:50%;background:var(--g-main)}

/* 大纲（复用 faq 折叠） */
.faq-list{margin-top:14px}
.faq-q .q-txt{font-weight:750}
.q-meta{margin-left:auto;margin-right:10px;font-size:.78rem;color:var(--soft);font-weight:650}
.lesson-list{display:flex;flex-direction:column}
.syllabus-flat{margin-top:16px}
.ls-kind{font-style:normal;font-size:.68rem;color:var(--soft);background:#f4f5fb;border-radius:6px;padding:2px 8px;margin-left:10px;font-weight:700}
.lesson-list li{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line)}
.lesson-list li:last-child{border-bottom:none}
.ls-idx{width:36px;flex:none;font-size:.8rem;font-weight:800;color:#7c3aed;background:#f3f0ff;border-radius:9px;text-align:center;padding:4px 0}
.ls-t{flex:1;min-width:0;font-size:.95rem;color:var(--body);font-weight:600}
.ls-d{font-size:.82rem;color:var(--soft);white-space:nowrap}
.ls-tag{font-size:.7rem;font-weight:700;padding:4px 10px;border-radius:20px;white-space:nowrap;display:inline-flex;align-items:center;gap:4px}
.ls-tag svg{width:11px;height:11px}
.ls-tag.free{background:#ecfdf5;color:#047857}
.ls-tag.ok{background:#eef2ff;color:#4f46e5}
.ls-tag.lock{background:#f4f5fb;color:var(--soft)}
.syl-tip{display:flex;align-items:center;gap:8px;margin-top:14px;padding:11px 14px;border-radius:12px;background:#f8f9ff;color:var(--muted);font-size:.84rem}
.syl-tip svg{width:16px;height:16px;flex:none;color:#7c3aed}

/* 讲师 */
.cd-teacher{display:flex;gap:18px;align-items:flex-start;margin-top:18px}
.t-ava{width:56px;height:56px;border-radius:18px;background:var(--g-main);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1.3rem;flex:none}

/* 侧栏购买卡 */
.cd-buy{padding:26px;border-radius:var(--r-lg)}
.cd-price-row{display:flex;align-items:baseline;gap:10px}
.cd-price{color:#e11d48;font-weight:900;font-size:2.1rem;line-height:1;letter-spacing:-.02em}
.cd-price em{font-style:normal;font-size:1.1rem;margin-right:2px}
.cd-origin{color:var(--soft);text-decoration:line-through;font-size:.95rem}
.cd-save{margin:12px 0 18px;font-size:.82rem;color:#047857;font-weight:700;background:#ecfdf5;display:inline-block;padding:5px 12px;border-radius:20px}
.cd-buy-note,.cd-owned-tip{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:.8rem;color:var(--soft);line-height:1.6}
.cd-owned-tip{color:#047857;font-weight:700}
.cd-buy-note svg,.cd-owned-tip svg{width:15px;height:15px;flex:none}
.cd-rights{margin-top:20px;padding-top:18px;border-top:1px dashed var(--line);display:flex;flex-direction:column;gap:11px}
.cd-rights li{display:flex;gap:10px;align-items:center;font-size:.9rem;color:var(--body)}
.cd-rights svg{width:17px;height:17px;color:#10b981;flex:none}

/* 侧栏信息 / 相关 */
.cd-info,.cd-rel{padding:22px 24px;border-radius:var(--r-lg)}
.cd-info h4,.cd-rel h4{display:flex;align-items:center;gap:9px;font-size:1.02rem;margin-bottom:14px}
.cd-info h4 svg,.cd-rel h4 svg{width:17px;height:17px;color:#7c3aed}
.cd-info ul{display:flex;flex-direction:column;gap:10px}
.cd-info li{display:flex;justify-content:space-between;gap:12px;font-size:.9rem;color:var(--muted)}
.cd-info li b{color:var(--ink);font-weight:750}
.cd-rel-item{display:flex;align-items:center;gap:11px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:.92rem;color:var(--body);transition:.2s}
.cd-rel-item:last-child{border-bottom:none}
.cd-rel-item:hover{color:#4f46e5}
.rl-dot{width:10px;height:10px;border-radius:4px;flex:none}
.rl-t{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rl-p{color:#e11d48;font-weight:800;font-size:.88rem}

/* 卡片“已购”角标 */
.cc-owned{position:absolute;top:14px;right:14px;z-index:2;font-size:.68rem;font-weight:800;padding:4px 11px;border-radius:20px;background:#10b981;color:#fff;box-shadow:0 6px 14px -6px rgba(16,185,129,.8)}

/* 我的已购 / 空态 */
.mine-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.mine-tip{font-size:.84rem;color:var(--soft)}
.cd-empty{display:flex;flex-direction:column;align-items:center;gap:14px;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r-lg);background:#fff;text-align:center}
.cd-empty svg{width:46px;height:46px;color:#c7cbf5}
.cd-empty b{font-size:1.15rem;color:var(--ink)}
.cd-empty p{color:var(--muted);font-size:.95rem;max-width:420px}

@media (max-width:1120px){
  .cd-hero{grid-template-columns:1fr;gap:28px}
  .cd-hero-cover{max-width:560px}
  .cd-grid{grid-template-columns:1fr}
  .cd-side{position:static}
}
@media (max-width:720px){
  .cd-block{padding:24px 20px 26px}
  .cd-learn{grid-template-columns:1fr}
  .ls-d{display:none}
  .ls-tag{padding:3px 8px;font-size:.66rem}
  .cd-hero-cover{min-height:190px}
  .cd-price{font-size:1.8rem}
}

/* ============================================================
   COURSE CENTER · 搜索 / 多维筛选 / 分页
   ============================================================ */
.cs-toolbar{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow-xs);margin-bottom:18px;
}
.cs-search{display:flex;align-items:center;gap:10px;flex:1;min-width:240px}
.cs-search svg{width:18px;height:18px;color:var(--soft);flex:none}
.cs-search input{
  flex:1;min-width:0;height:44px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:#fbfbfe;font-family:inherit;font-size:.94rem;outline:none;
}
.cs-search input:focus{border-color:#8b5cf6;box-shadow:var(--ring);background:#fff}
.cs-search button{
  height:44px;padding:0 22px;border-radius:999px;font-weight:800;font-size:.9rem;color:#fff;
  background:var(--g-main);border:none;cursor:pointer;font-family:inherit;
}
.cs-free-toggle{
  display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:999px;
  font-size:.88rem;font-weight:700;color:var(--muted);background:#f4f5fb;border:1px solid transparent;
}
.cs-free-toggle.on{color:#047857;background:#ecfdf5;border-color:rgba(16,185,129,.35)}

.fbar{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}
.fbar-label{
  flex:none;width:56px;padding-top:9px;font-size:.82rem;font-weight:800;color:var(--soft);
}
.fbar-chips{display:flex;flex-wrap:wrap;gap:8px;flex:1;min-width:0}
.fchip .n{margin-left:6px;font-size:.72rem;opacity:.7;font-weight:700}

.cs-meta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin:6px 0 22px;
}
.cs-result{font-size:.92rem;color:var(--muted)}
.cs-result b{color:var(--ink)}
.cs-sorts{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.cs-sorts a{
  padding:8px 16px;border-radius:999px;font-size:.86rem;font-weight:700;color:var(--muted);
  border:1px solid var(--line);background:#fff;
}
.cs-sorts a.on{color:#fff;background:var(--g-main);border-color:transparent}

.cs-tags-row{display:flex;flex-wrap:wrap;gap:7px;margin:9px 0 4px}
.cs-mini{
  font-size:.72rem;font-weight:700;padding:3px 10px;border-radius:20px;
  background:#f3f0ff;color:#5b21b6;
}
.cs-mini.gray{background:#f4f5fb;color:var(--soft)}
.cs-rate{color:#f59e0b;font-weight:800}

.pager{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:44px}
.pager a,.pager span{
  min-width:42px;height:42px;padding:0 14px;border-radius:12px;display:inline-flex;
  align-items:center;justify-content:center;font-size:.9rem;font-weight:700;
  border:1px solid var(--line);background:#fff;color:var(--body);
}
.pager a:hover{border-color:#c7cbf5;color:#4f46e5}
.pager .cur{background:var(--g-main);color:#fff;border-color:transparent}
.pager .off{opacity:.45;pointer-events:none}
.pager .dots{border:none;background:none}

/* 课程详情：结构化信息 */
.cd-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.cd-fact{
  display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:999px;
  font-size:.85rem;font-weight:700;color:var(--body);background:#f7f8ff;border:1px solid var(--line);
}
.cd-fact svg{width:15px;height:15px;color:#7c3aed}

/* ============================================================
   TEACHER / ADMIN 后台（老师端发布 + 总后台审核）
   ============================================================ */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tbl{width:100%;border-collapse:collapse;font-size:.9rem;min-width:660px}
.tbl th{
  text-align:left;padding:12px 14px;background:#f7f8ff;color:var(--muted);
  font-weight:800;font-size:.82rem;white-space:nowrap;border-bottom:1px solid var(--line);
}
.tbl td{padding:14px;border-bottom:1px dashed var(--line);color:var(--body);vertical-align:top}
.tbl tr:last-child td{border-bottom:none}
.tbl td b{color:var(--ink)}
.tbl .small{font-size:.8rem}
.st-badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:.74rem;font-weight:800;white-space:nowrap}
.st-0{background:#fff7e6;color:#b45309}
.st-1{background:#ecfdf5;color:#047857}
.st-2{background:#fff1f2;color:#be123c}
.st-3{background:#f1f3f9;color:#6b7296}
.lnk{background:none;border:none;padding:0;margin-right:12px;color:#4f46e5;font-weight:700;font-size:.86rem;cursor:pointer;font-family:inherit}
.lnk:hover{text-decoration:underline}
.lnk.danger{color:#e11d48}
.course-form label{display:block;margin-bottom:16px;font-size:.88rem;font-weight:700;color:var(--ink)}
.course-form .input{margin-top:8px}
.course-form .form-row{margin-bottom:2px}
.review-form .input{width:100%}

/* ============================================================
   LOGIN · 身份选择与登录提示（console-dark）
   ============================================================ */
.back-tip{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;
  padding:8px 16px;border-radius:999px;font-size:.8rem;font-weight:700;
  color:#c4b5fd;background:rgba(124,58,237,.16);border:1px solid rgba(167,139,250,.3);
}
.back-tip svg{width:14px;height:14px}
.login-tip{
  margin-top:16px;font-size:.78rem;line-height:1.7;color:rgba(255,255,255,.55);
}
.login-tip b{color:#c4b5fd;font-weight:800}

/* 身份选择 */
.role-pick{
  margin:20px 0 6px;padding:16px 16px 12px;border-radius:16px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
}
.rp-title{font-size:.88rem;font-weight:800;color:#fff;margin-bottom:12px}
.rp-title i{color:var(--rose);font-style:normal;margin-right:4px}
.rp-hint{display:block;margin-top:5px;font-size:.74rem;font-weight:600;color:rgba(255,255,255,.5)}
.role-pick .ck{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12);color:rgba(255,255,255,.85)}
.role-pick .ck:hover{border-color:rgba(167,139,250,.5)}
.role-pick .ck:has(input:checked){background:rgba(124,58,237,.24);border-color:rgba(167,139,250,.6)}
.role-pick .ck .bx{border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.08)}
.ck-txt{min-width:0}
.ck-txt b{color:#fff;font-weight:800;display:block}
.ck-txt em{display:block;font-style:normal;font-size:.72rem;color:rgba(255,255,255,.55);margin-top:3px}
@media (max-width:720px){ .role-pick .check-grid{grid-template-columns:1fr} }

/* ============================================================
   MOBILE · 课程中心 / 课程详情 手机端适配
   ============================================================ */

/* 手机端底部购买条（仅详情页 body.has-buybar 时显示） */
.buy-bar{display:none}
@media (max-width:1120px){
  body.has-buybar{padding-bottom:88px}
  body.has-buybar #toTop{bottom:100px}
  .buy-bar{
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    position:fixed;left:0;right:0;bottom:0;z-index:95;
    padding:11px 16px calc(11px + env(safe-area-inset-bottom,0px));
    background:rgba(255,255,255,.96);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-top:1px solid var(--line);box-shadow:0 -12px 30px -18px rgba(15,23,42,.3);
  }
  .buy-bar-price{display:flex;flex-direction:column;line-height:1.15;min-width:0}
  .buy-bar-price .cd-price{font-size:1.32rem}
  .buy-bar-price small{font-size:.72rem;color:var(--soft);margin-top:4px}
  .buy-bar form{margin:0;flex:none}
  .buy-bar .btn{padding:12px 22px;font-size:.95rem;white-space:nowrap}
}

/* 通用小屏：卡片改单列 + 封面收紧 */
@media (max-width:640px){
  .course-grid{grid-template-columns:1fr;gap:18px}
  .cc-cover{min-height:130px;padding:22px 18px 18px}
  .cc-badge{font-size:.62rem;padding:3px 10px}
  .cc-brand{margin-top:14px;font-size:.68rem}
  .cc-title{font-size:1.16rem}
  .cc-sub{font-size:.72rem}
  .cc-ray{width:118px;height:118px;right:-24px;bottom:-34px}
  .cc-body{padding:16px 18px 18px;gap:8px}
  .cc-name{font-size:1rem}
  .cc-desc{font-size:.83rem;line-height:1.7;-webkit-line-clamp:3;line-clamp:3}
  .cc-foot{margin-top:12px;padding-top:12px}
  .cc-price{font-size:1.1rem}
  .cc-view{font-size:.74rem}

  /* 区块标题与「查看更多」 */
  .course-sec-head{margin-bottom:28px}
  .course-sec-title h2{padding-left:16px;font-size:1.38rem}
  .course-sec-title h2::before{width:6px}
  .course-sec-title p{font-size:.92rem;margin-top:10px}
  .course-more{padding:10px 18px;font-size:.88rem}

  /* 分类筛选横向滚动，避免换行占满整屏 */
  [data-filterbar="courses"]{
    flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;padding-bottom:4px;
  }
  [data-filterbar="courses"]::-webkit-scrollbar{display:none}
  [data-filterbar="courses"] .fchip{flex:none}
}

/* 超小屏：详情页信息密度与留白收紧 */
@media (max-width:720px){
  .form-row{grid-template-columns:1fr}
  .tbl{min-width:560px}
}
@media (max-width:560px){
  .section{padding:52px 0}
  .page-hero{padding-bottom:44px}
  .ph-meta{gap:8px;margin-top:18px}
  .ph-meta .chip{font-size:.76rem;padding:5px 11px}
  .crumbs{font-size:.8rem;margin-bottom:14px}

  .cd-hero-copy h1{font-size:1.5rem;margin:14px 0 10px}
  .cd-hero-cover{min-height:168px;padding:24px 20px 20px;border-radius:20px}
  .cd-hero-cover .cc-title{font-size:1.28rem}

  .cd-block{padding:20px 16px 22px}
  .cd-block h3{font-size:1.08rem;gap:8px;margin-bottom:4px}
  .cd-block h3 svg{width:18px;height:18px}
  .cd-intro{font-size:.95rem;line-height:1.9;margin-top:8px}
  .cd-sub{font-size:.85rem}
  .cd-learn{gap:11px;margin-top:12px}
  .cd-learn li{font-size:.93rem;line-height:1.65}
  .cd-suited li{font-size:.93rem}

  /* 大纲：隐藏章节右侧“讲数·时长”，让标题有完整宽度 */
  .q-meta{display:none}
  .faq-q{padding:16px 18px;font-size:.95rem;gap:10px}
  .faq-a{padding:0 18px 18px}
  .lesson-list li{gap:9px;padding:10px 0}
  .ls-idx{width:30px;font-size:.74rem}
  .ls-t{font-size:.9rem;line-height:1.55}
  .ls-tag{padding:3px 8px;font-size:.66rem}
  .syl-tip{font-size:.8rem;padding:10px 12px;margin-top:12px}

  .cd-teacher{gap:14px;margin-top:14px}
  .t-ava{width:48px;height:48px;font-size:1.15rem;border-radius:15px}
  .cd-buy,.cd-info,.cd-rel{padding:18px 18px 20px}
  .cd-price{font-size:1.68rem}
  .cd-save{margin:10px 0 14px;font-size:.78rem}
  .cd-rights{margin-top:16px;padding-top:14px;gap:9px}
  .cd-rights li{font-size:.87rem}
  .cd-info li{font-size:.87rem}
  .cd-flash{font-size:.9rem;padding:12px 14px;margin-bottom:20px}
  .cd-empty{padding:48px 18px}
  .mine-bar{margin-bottom:26px}
  .buy-bar .btn{padding:11px 18px;font-size:.92rem}
}