/* ==========================================================================
   小助理 · 投资知识读物 · 免费领取（WhatsApp 营销）
   设计系统 Design System
   ========================================================================== */

:root{
  /* 主色 */
  --red:#C8102E;
  --red-2:#A60D26;
  --red-dark:#6E0817;
  --red-deep:#3A040C;
  /* 金色 */
  --gold:#E8B33A;
  --gold-2:#F6D574;
  --gold-3:#FFF1C2;
  --gold-deep:#A87C18;
  /* 中性 */
  --cream:#FFF9EE;
  --paper:#FFFCF6;
  --white:#FFFFFF;
  --ink:#20130F;
  --ink-2:#5E4A40;
  --ink-3:#927C6E;
  --line:#EFE2D2;
  /* WhatsApp 品牌色（仅用于 WhatsApp CTA） */
  --wa:#25D366;
  --wa-dark:#128C7E;
  --wa-bg:#ECE5DD;

  --shadow-xs:0 1px 3px rgba(74,24,12,.06);
  --shadow-sm:0 4px 14px rgba(74,24,12,.08);
  --shadow:0 14px 34px rgba(74,24,12,.11);
  --shadow-lg:0 30px 70px rgba(74,24,12,.18);

  --radius:18px;
  --radius-sm:12px;
  --radius-lg:26px;
  --maxw:1200px;
  --head-h:70px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.72;font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;padding-top:var(--head-h);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:900px;margin:0 auto;padding:0 24px}

/* ---------- 通用排版 ---------- */
.hl{color:var(--red)}
.hl-gold{color:var(--gold-deep)}
.sec{padding:84px 0}
.sec-tight{padding:56px 0}
.sec-head{text-align:center;max-width:760px;margin:0 auto 46px}
.sec-head .eyebrow{
  display:inline-block;font-size:12px;font-weight:800;letter-spacing:.22em;
  color:var(--red);background:#FDEBEE;
  padding:7px 16px;border-radius:99px;margin-bottom:18px;
}
.sec-head h2{font-size:clamp(26px,3.4vw,40px);line-height:1.25;font-weight:900;letter-spacing:-.01em}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:16.5px}
.sec-head.on-dark h2{color:#FFF6E4}
.sec-head.on-dark p{color:rgba(255,240,214,.72)}
.sec-head.on-dark .eyebrow{background:rgba(255,255,255,.1);color:var(--gold-2)}

.divider-gold{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:20px}
.divider-gold i{height:1px;width:56px;background:linear-gradient(90deg,transparent,var(--gold))}
.divider-gold i:last-child{background:linear-gradient(90deg,var(--gold),transparent)}
.divider-gold span{color:var(--gold-deep);font-size:14px;letter-spacing:.3em}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:52px;padding:0 30px;border-radius:99px;
  font-size:16px;font-weight:800;letter-spacing:.02em;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{
  color:#FFF7E2;
  background:linear-gradient(135deg,#DA1435,#A60D26 55%,#7C0819);
  box-shadow:0 12px 26px -8px rgba(168,13,38,.65),inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary:hover{box-shadow:0 18px 34px -10px rgba(168,13,38,.75)}
.btn-gold{
  color:#4A2C05;
  background:linear-gradient(135deg,#FFE59A,#E8B33A 50%,#C9962A);
  box-shadow:0 12px 26px -10px rgba(168,124,24,.7),inset 0 1px 0 rgba(255,255,255,.55);
}
.btn-gold:hover{filter:brightness(1.04)}
.btn-ghost{color:var(--ink);background:#fff;border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-deep)}
.btn-lg{height:58px;padding:0 38px;font-size:17px}
.btn-block{width:100%}

/* WhatsApp 主按钮（品牌绿，仅用于 WhatsApp 入口） */
.btn-wa{
  color:#fff;
  background:linear-gradient(135deg,#29D86A,#25D366 50%,#128C7E);
  box-shadow:0 14px 30px -10px rgba(18,140,53,.55),inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-wa:hover{filter:brightness(1.05);box-shadow:0 20px 38px -12px rgba(18,140,53,.7)}
.btn-wa svg{width:22px;height:22px;flex-shrink:0}

/* ---------- 顶部公告 ---------- */
.announce{
  background:linear-gradient(90deg,#3A040C,#6E0817 50%,#3A040C);
  color:#FFE9B8;font-size:13.5px;letter-spacing:.02em;text-align:center;padding:10px 16px;
}
.announce strong{color:var(--gold-2)}
.announce .dot{margin:0 10px;opacity:.45}

/* ---------- 头部导航 ---------- */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:90;height:var(--head-h);
  background:rgba(255,252,246,.92);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.site-head .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,#DA1435,#7C0819);
  display:grid;place-items:center;color:var(--gold-2);font-weight:900;font-size:19px;
  box-shadow:0 8px 18px -8px rgba(168,13,38,.8);
}
.brand__text b{display:block;font-size:18px;font-weight:900;letter-spacing:.04em;line-height:1.2}
.brand__text span{display:block;font-size:11px;color:var(--ink-3);letter-spacing:.14em}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:15.5px;font-weight:600;color:var(--ink-2);position:relative;padding:6px 0;transition:color .16s}
.nav a:hover,.nav a.active{color:var(--red)}
.nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2.5px;border-radius:2px;
  background:linear-gradient(90deg,var(--red),var(--gold));
}
.head-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.head-cart,.head-wa{
  position:relative;width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;border:1.5px solid var(--line);background:#fff;
  transition:border-color .16s,color .16s;color:var(--ink)
}
.head-wa{border-color:#BFEED4;color:var(--wa);background:#F0FAF4}
.head-wa:hover{border-color:var(--wa);background:#E6F7EC}
.head-wa svg{width:21px;height:21px}
.head-cta-wa{
  height:44px;padding:0 18px;font-size:14.5px;background:linear-gradient(135deg,#29D86A,#25D366);color:#fff;
  border-radius:99px;font-weight:800;display:inline-flex;align-items:center;gap:7px;
  box-shadow:0 8px 18px -8px rgba(18,140,53,.6);
}
.head-cta-wa:hover{filter:brightness(1.05)}
.head-cta-wa svg{width:18px;height:18px}
.burger{display:none;width:44px;height:44px;border-radius:12px;border:1.5px solid var(--line);background:#fff;place-items:center}
.burger svg{width:20px;height:20px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 460px at 82% 10%,rgba(200,16,46,.55),transparent 62%),
    radial-gradient(700px 500px at 8% 92%,rgba(232,179,58,.22),transparent 60%),
    linear-gradient(160deg,#2C0208 0%,#4A0512 48%,#220105 100%);
  color:#FFF6E4;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 40%,#000 40%,transparent 78%);
}
.hero__grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:92px 0 96px;
}
.hero__badge{
  display:inline-flex;align-items:center;gap:9px;
  background:rgba(255,255,255,.09);border:1px solid rgba(246,213,116,.35);
  color:var(--gold-2);font-size:13.5px;font-weight:700;
  padding:9px 18px;border-radius:99px;margin-bottom:26px;letter-spacing:.04em;
}
.hero__badge i{width:7px;height:7px;border-radius:50%;background:var(--gold-2);box-shadow:0 0 0 4px rgba(246,213,116,.2)}
.hero h1{
  font-size:clamp(34px,5vw,62px);line-height:1.12;font-weight:900;letter-spacing:-.015em;
  text-shadow:0 4px 30px rgba(0,0,0,.4);
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(180deg,#FFF3C8,#F0C34C 52%,#C9962A);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__sub{margin-top:24px;font-size:17.5px;line-height:1.85;color:rgba(255,240,214,.82);max-width:560px}
.hero__sub b{color:var(--gold-2)}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:38px}
.hero__stats{
  display:flex;gap:38px;margin-top:46px;flex-wrap:wrap;
  padding-top:30px;border-top:1px solid rgba(255,255,255,.12);
}
.hero__stats div b{display:block;font-size:30px;font-weight:900;line-height:1.1;
  background:linear-gradient(180deg,#FFF3C8,#E8B33A);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__stats div span{font-size:13.5px;color:rgba(255,240,214,.66)}

/* ---------- WhatsApp 聊天预览 ---------- */
.hero__visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:460px}
.wa-chat{
  width:340px;background:var(--white);border-radius:24px;overflow:hidden;
  box-shadow:0 30px 70px -20px rgba(0,0,0,.6),0 0 0 1px rgba(255,255,255,.05);
  font-family:inherit;
}
.wa-chat__head{
  display:flex;align-items:center;gap:12px;
  background:var(--wa-dark);color:#fff;padding:14px 18px;
}
.wa-chat__av{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  background:#DA1435 url("assets/assistant-avatar.jpg") center 20%/cover no-repeat;
  display:grid;place-items:center;font-weight:900;color:var(--gold-2);
  border:2px solid rgba(246,213,116,.55);box-shadow:0 2px 10px rgba(0,0,0,.28);
}
.wa-chat__head b{display:block;font-size:15.5px;font-weight:800;line-height:1.2}
.wa-chat__head small{display:block;font-size:12px;color:rgba(255,255,255,.8);margin-top:2px}
.wa-chat__head .live{margin-left:auto;font-size:11.5px;color:var(--gold-2);display:flex;align-items:center;gap:6px;font-weight:700}
.wa-chat__head .live i{width:8px;height:8px;border-radius:50%;background:var(--gold-2);box-shadow:0 0 0 3px rgba(246,213,116,.25)}

.wa-chat__body{padding:18px 16px;background:var(--wa-bg);display:flex;flex-direction:column;gap:9px;min-height:280px}
.msg{
  max-width:80%;padding:9px 12px;border-radius:12px;font-size:13.5px;line-height:1.55;
  box-shadow:0 1px 0.5px rgba(0,0,0,.08);position:relative;
}
.msg small{display:block;font-size:10.5px;color:rgba(0,0,0,.45);text-align:right;margin-top:4px;letter-spacing:.02em}
.msg--in{background:#fff;color:var(--ink);align-self:flex-start;border-top-left-radius:3px}
.msg--out{background:#DCF8C6;color:var(--ink);align-self:flex-end;border-top-right-radius:3px}

.msg-file{
  display:flex;align-items:center;gap:10px;background:#fff;border-radius:8px;
  padding:9px 11px;margin-bottom:6px;border:1px solid #DDE7DC;min-width:170px;
}
.msg-file .ic{width:34px;height:42px;border-radius:5px;flex-shrink:0;
  background:linear-gradient(135deg,#E84545,#A41010);position:relative;overflow:hidden}
.msg-file .ic::after{content:"";position:absolute;inset:auto 0 0 auto;width:14px;height:14px;
  background:linear-gradient(225deg,transparent 50%,#fff 50%)}
.msg-file .ic b{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  font-size:10px;color:#fff;font-weight:900;letter-spacing:.06em}
.msg-file div b{display:block;font-size:13px;font-weight:800;color:var(--ink);line-height:1.2}
.msg-file div span{display:block;font-size:11px;color:var(--ink-3);margin-top:2px}

.wa-chat__foot{
  display:flex;align-items:center;gap:9px;
  background:#F0F0F0;padding:9px 16px;border-top:1px solid #E2DFD8;
}
.wa-chat__foot .bar{flex:1;height:36px;border-radius:99px;background:#fff;border:1px solid #DDD;display:flex;align-items:center;padding:0 14px;color:var(--ink-3);font-size:13.5px}
.wa-chat__foot .bar svg{width:18px;height:18px;margin-right:9px;flex-shrink:0}
.wa-chat__foot .snd{width:40px;height:40px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;background:var(--wa);color:#fff}
.wa-chat__foot .snd svg{width:18px;height:18px}

/* Hero 装饰 */
.hero__chips{position:absolute;display:flex;flex-direction:column;gap:11px}
.hero__chips--l{left:-30px;top:18px}
.hero__chips--r{right:-46px;bottom:34px}
.hero__chip{
  display:inline-flex;align-items:center;gap:9px;
  background:rgba(255,255,255,.1);border:1px solid rgba(246,213,116,.3);
  color:var(--gold-2);font-size:13px;font-weight:700;
  padding:9px 16px;border-radius:99px;backdrop-filter:blur(8px);
}
.hero__chip svg{width:16px;height:16px}

/* ---------- 信任条 ---------- */
.trustbar{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trustbar .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding-top:26px;padding-bottom:26px}
.trust{display:flex;align-items:center;gap:13px;justify-content:center}
.trust__ic{width:42px;height:42px;border-radius:12px;flex-shrink:0;display:grid;place-items:center;background:linear-gradient(135deg,#FDEDE0,#F9DCC8);color:var(--red)}
.trust__ic svg{width:21px;height:21px}
.trust b{display:block;font-size:15px;font-weight:800;line-height:1.3}
.trust span{font-size:12.5px;color:var(--ink-3)}

/* ---------- 资料卡片（PDF） ---------- */
.pdfs{background:var(--cream)}
.pdf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.pdf-card{
  background:#fff;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease;
}
.pdf-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.pdf-card__img{
  position:relative;padding:38px 28px;display:grid;place-items:center;min-height:240px;
  background:
    radial-gradient(420px 240px at 70% 15%,rgba(200,16,46,.14),transparent 65%),
    linear-gradient(150deg,#FFF6E6,#F6E7CE);
}
.pdf-card__flag{
  position:absolute;top:18px;left:18px;font-size:11.5px;font-weight:800;
  color:#fff;background:var(--red);padding:6px 13px;border-radius:99px;letter-spacing:.05em;
  box-shadow:0 6px 14px -6px rgba(168,13,38,.8);
}
.pdf-card__flag.gold{background:linear-gradient(135deg,#E8B33A,#C9962A);color:#4A2C05}

/* PDF 文档占位图（用户后续可换成真实 PDF 封面截图） */
.pdf-doc{
  width:170px;max-width:100%;aspect-ratio:1/1.3;background:#fff;border-radius:6px;
  box-shadow:0 18px 30px -16px rgba(60,6,14,.45),inset 0 0 0 1px rgba(0,0,0,.04);
  display:flex;flex-direction:column;padding:16px 14px;position:relative;overflow:hidden;
}
.pdf-doc::after{
  content:"";position:absolute;right:0;top:0;width:24px;height:24px;
  background:linear-gradient(225deg,transparent 50%,#F0F0F0 50%,#DDD 100%);
}
.pdf-doc__tag{
  font-size:9px;font-weight:800;letter-spacing:.12em;color:var(--red);
  background:#FDEBEE;padding:3px 7px;border-radius:4px;align-self:flex-start;
}
.pdf-doc h4{font-size:14.5px;font-weight:900;line-height:1.3;color:var(--ink);margin-top:11px}
.pdf-doc .cpr{margin-top:auto;font-size:10.5px;color:var(--ink-3);letter-spacing:.04em}
.pdf-doc .redbar{
  position:absolute;left:14px;right:14px;bottom:32px;height:6px;border-radius:3px;
  background:linear-gradient(90deg,var(--red),var(--gold));
}
.pdf-doc--dark{background:linear-gradient(135deg,#FFF8E7,#F0E2C4);color:var(--ink)}
.pdf-doc--red{background:linear-gradient(135deg,#FFE9EC,#FFD9DD);color:var(--ink)}
.pdf-doc--blue{background:linear-gradient(135deg,#EAF1FB,#D8E5F5);color:var(--ink)}
.pdf-doc--violet{background:linear-gradient(135deg,#F2EFFE,#E1D9F7);color:var(--ink)}

.pdf-card__body{padding:26px 28px 28px;display:flex;flex-direction:column;flex:1}
.pdf-card__cat{font-size:12.5px;font-weight:800;color:var(--gold-deep);letter-spacing:.14em;margin-bottom:9px}
.pdf-card__title{font-size:22px;font-weight:900;line-height:1.3}
.pdf-card__desc{margin-top:11px;font-size:14.5px;color:var(--ink-2);line-height:1.75}
.pdf-card__mods{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  display:grid;grid-template-columns:1fr;gap:9px;
}
.pdf-card__mods li{
  font-size:13.5px;color:var(--ink-2);font-weight:600;
  display:flex;align-items:flex-start;gap:9px;line-height:1.55;
}
.pdf-card__mods li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--red);flex-shrink:0;margin-top:7px;
}
.pdf-card__cta{margin-top:auto;padding-top:22px}
.pdf-card__cta .btn{width:100%;height:50px}

/* ---------- 技术图解（孤立高低点） ---------- */
.topic{background:var(--paper);position:relative;overflow:hidden}
.topic::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(720px 320px at 12% 0%,rgba(200,16,46,.055),transparent 62%);
}
.topic .wrap{position:relative;z-index:1}

.kx-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.kx-figure{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 24px;box-shadow:var(--shadow-xs);
}
.kx-figure__cap{
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:900;
  color:var(--red);background:#FDEBEE;padding:6px 15px;border-radius:99px;margin-bottom:16px;
}
.kx-figure__cap i{width:7px;height:7px;border-radius:50%;background:var(--red);display:block}
.kx-figure--low .kx-figure__cap{color:#1B7A47;background:#E7F6EC}
.kx-figure--low .kx-figure__cap i{background:#1B7A47}
.kx-svg{width:100%;height:auto;display:block}

.kx-defs{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px}
.kx-def{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--red);
  border-radius:var(--radius-sm);padding:20px 24px;box-shadow:var(--shadow-xs);
}
.kx-def:last-child{border-left-color:#1B7A47}
.kx-def h3{font-size:16.5px;font-weight:900;margin-bottom:7px}
.kx-def p{font-size:14px;color:var(--ink-2);line-height:1.78}
.kx-def p b{color:var(--ink)}

.point-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.point{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;
  box-shadow:var(--shadow-xs);transition:border-color .2s,transform .2s;
}
.point:hover{border-color:#F3D9A8;transform:translateY(-4px)}
.point__no{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;font-size:13px;font-weight:900;
  color:var(--red);background:#FDEBEE;margin-bottom:12px;
}
.point h3{font-size:16.5px;font-weight:900;margin-bottom:8px;line-height:1.4}
.point p{font-size:13.5px;color:var(--ink-2);line-height:1.78}

/* 视频资料卡 */
.video-card{
  margin-top:46px;display:grid;grid-template-columns:320px 1fr;
  background:linear-gradient(135deg,#1D1013,#0C0608);
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:0 30px 70px -24px rgba(74,24,12,.55);
}
.video-card__cover{
  position:relative;min-height:260px;display:grid;place-items:center;
  background:
    radial-gradient(300px 200px at 70% 20%,rgba(200,16,46,.32),transparent 65%),
    linear-gradient(150deg,#2A171C,#0B0507);
}
.video-card__cover::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(246,213,116,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(246,213,116,.07) 1px,transparent 1px);
  background-size:30px 30px;
}
.video-card__play{
  position:relative;z-index:2;width:66px;height:66px;border-radius:50%;
  background:rgba(255,255,255,.1);border:2px solid rgba(246,213,116,.7);
  color:var(--gold-2);display:grid;place-items:center;
  box-shadow:0 0 0 10px rgba(246,213,116,.08);transition:transform .2s,background .2s;
}
.video-card:hover .video-card__play{transform:scale(1.06);background:rgba(255,255,255,.16)}
.video-card__play svg{width:24px;height:24px;margin-left:3px}
.video-card__dur{
  position:absolute;z-index:2;right:14px;bottom:14px;font-size:12px;font-weight:800;
  color:#fff;background:rgba(0,0,0,.55);padding:4px 10px;border-radius:6px;letter-spacing:.04em;
}
.video-card__kicker{
  position:absolute;z-index:2;left:14px;top:14px;font-size:11.5px;font-weight:800;
  color:#4A2C05;background:linear-gradient(135deg,#E8B33A,#C9962A);
  padding:5px 12px;border-radius:99px;letter-spacing:.06em;
}
.video-card__body{padding:34px 36px;display:flex;flex-direction:column;justify-content:center}
.video-card__body h3{font-size:23px;font-weight:900;color:#FFF6E4;line-height:1.3}
.video-card__body p{margin-top:12px;font-size:14.5px;line-height:1.8;color:rgba(255,240,214,.74)}
.video-card__body p b{color:var(--gold-2)}
.video-card__tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.video-card__tags li{
  font-size:12.5px;font-weight:700;color:rgba(255,240,214,.85);
  background:rgba(255,255,255,.08);border:1px solid rgba(246,213,116,.22);
  padding:5px 13px;border-radius:99px;
}
.video-card__cta{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.video-card__cta .btn{height:50px;padding:0 26px}
.video-card__note{font-size:12.5px;color:rgba(255,240,214,.5);line-height:1.7}

/* ---------- 卖点 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;
  box-shadow:var(--shadow-xs);transition:border-color .2s,transform .2s;
}
.feat:hover{border-color:#F3D9A8;transform:translateY(-4px)}
.feat__ic{
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;margin-bottom:20px;
  background:linear-gradient(135deg,#DA1435,#7C0819);color:var(--gold-2);
  box-shadow:0 12px 22px -12px rgba(168,13,38,.85);
}
.feat__ic svg{width:25px;height:25px}
.feat h3{font-size:18.5px;font-weight:900;margin-bottom:9px}
.feat p{font-size:14.5px;color:var(--ink-2);line-height:1.78}

/* ---------- 领取流程 ---------- */
.process{background:linear-gradient(160deg,#2C0208,#4A0512 55%,#220105);color:#FFF6E4}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  background:rgba(255,255,255,.055);border:1px solid rgba(246,213,116,.22);
  border-radius:var(--radius);padding:30px 28px;
}
.step__no{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,#FFF1C2,#E8B33A);color:#7A0E1E;font-size:22px;font-weight:900;
  box-shadow:0 8px 16px -8px rgba(232,179,58,.6);
}
.step h3{font-size:19px;font-weight:900;color:#FFF3CE;margin-bottom:9px}
.step p{font-size:14.5px;color:rgba(255,240,214,.74);line-height:1.78}

/* ---------- 适读人群 ---------- */
.audience{background:var(--cream)}
.aud-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.aud{
  background:#fff;border-radius:var(--radius);padding:28px 24px;border:1px solid var(--line);
  position:relative;overflow:hidden;
}
.aud::after{content:attr(data-no);position:absolute;right:14px;top:-8px;font-size:68px;font-weight:900;color:#F7EEDF;line-height:1;z-index:0}
.aud>*{position:relative;z-index:1}
.aud__ic{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,#FFF3D6,#F7DFA4);color:var(--gold-deep);
}
.aud__ic svg{width:22px;height:22px}
.aud h3{font-size:16.5px;font-weight:900;margin-bottom:6px}
.aud p{font-size:13.5px;color:var(--ink-2);line-height:1.75}

/* ---------- 风险提示 ---------- */
.risk{
  background:linear-gradient(135deg,#FFF8E9,#FCEFD4);border:1.5px solid #F0D89A;border-radius:var(--radius-lg);
  padding:34px 38px;display:flex;gap:22px;align-items:flex-start;
}
.risk__ic{
  width:52px;height:52px;border-radius:15px;flex-shrink:0;display:grid;place-items:center;
  background:#fff;color:#C58A0C;border:1.5px solid #F0D89A;
}
.risk__ic svg{width:26px;height:26px}
.risk h3{font-size:19px;font-weight:900;color:#8A5B05;margin-bottom:10px}
.risk p{font-size:14.5px;color:#7A6428;line-height:1.85}
.risk p+p{margin-top:8px}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:13px}
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.faq summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:16px;font-weight:800;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--gold-deep);flex-shrink:0;transition:transform .2s;
}
.faq[open] summary::after{transform:rotate(45deg)}
.faq .faq__bd{padding:0 24px 22px;font-size:14.5px;color:var(--ink-2);line-height:1.85}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  background:linear-gradient(140deg,#2C0208,#6E0817 55%,#3A040C);color:#FFF6E4;border-radius:var(--radius-lg);
  padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,179,58,.28),transparent 68%);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:900;line-height:1.3;position:relative;z-index:1}
.cta-band p{margin-top:10px;color:rgba(255,240,214,.75);font-size:15.5px;position:relative;z-index:1}
.cta-band .btn{position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.site-foot{background:#1B0308;color:rgba(255,240,214,.66);padding:64px 0 0;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:44px}
.site-foot h4{color:#FFF3CE;font-size:15.5px;font-weight:900;margin-bottom:18px;letter-spacing:.04em}
.site-foot ul li{margin-bottom:11px}
.site-foot ul a:hover{color:var(--gold-2)}
.foot-brand .brand__text b{color:#FFF3CE}
.foot-brand .brand__text span{color:rgba(255,240,214,.5)}
.foot-brand p{margin-top:18px;line-height:1.85;max-width:340px}
.foot-risk{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;font-size:12.5px;line-height:1.85;color:rgba(255,240,214,.5)}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0 30px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,240,214,.45);
}

/* ---------- 悬浮 WhatsApp 按钮 ---------- */
.wa-fab{
  position:fixed;right:22px;bottom:22px;z-index:95;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px 14px 18px;border-radius:99px;
  background:linear-gradient(135deg,#29D86A,#25D366 55%,#128C7E);color:#fff;font-weight:800;font-size:15.5px;
  box-shadow:0 16px 36px -10px rgba(18,140,53,.55),0 4px 12px -4px rgba(0,0,0,.18);
  transition:transform .18s ease;
}
.wa-fab:hover{transform:translateY(-2px)}
.wa-fab svg{width:24px;height:24px}
.wa-fab__pulse{position:absolute;inset:0;border-radius:99px;box-shadow:0 0 0 0 rgba(37,211,102,.55);animation:waPulse 2.4s ease-out infinite;pointer-events:none}
@keyframes waPulse{
  0%{box-shadow:0 0 0 0 rgba(37,211,102,.55)}
  70%{box-shadow:0 0 0 18px rgba(37,211,102,0)}
  100%{box-shadow:0 0 0 0 rgba(37,211,102,0)}
}

/* ==========================================================================
   产品详情/领取页
   ========================================================================== */
.crumb{padding:20px 0;font-size:13.5px;color:var(--ink-3);background:var(--paper)}
.crumb a:hover{color:var(--red)}
.crumb span{margin:0 9px;opacity:.5}

.pd{padding:14px 0 70px}
.pd__grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:flex-start}

.gallery{position:sticky;top:calc(var(--head-h) + 20px)}
.gal-main{
  border-radius:var(--radius-lg);border:1px solid var(--line);overflow:hidden;
  background:
    radial-gradient(520px 340px at 72% 12%,rgba(200,16,46,.14),transparent 66%),
    linear-gradient(150deg,#FFF7E8,#F5E6CC);
  display:grid;place-items:center;padding:46px 34px;min-height:430px;
}
.gal-main .pdf-doc{width:230px}
.gal-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}
.gal-thumb{
  border-radius:12px;border:1.5px solid var(--line);background:#FFFDF8;
  aspect-ratio:1;display:grid;place-items:center;cursor:pointer;overflow:hidden;
  transition:border-color .18s;
}
.gal-thumb.active{border-color:var(--red);box-shadow:0 0 0 3px rgba(200,16,46,.1)}
.gal-thumb .pdf-doc{width:46px}
.gal-thumb__art{font-size:22px}

.pd-info h1{font-size:clamp(26px,3vw,32px);font-weight:900;line-height:1.3}
.pd-info .pd-sub{margin-top:12px;font-size:16px;color:var(--ink-2);line-height:1.8}
.pd-flags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

.pd-claim{
  margin-top:26px;padding:26px;border-radius:var(--radius);
  background:linear-gradient(135deg,#F0FAF4,#DDF5E5);border:1.5px solid #BFEED4;
}
.pd-claim h3{font-size:18px;font-weight:900;color:#0F6A3A;display:flex;align-items:center;gap:10px}
.pd-claim h3 svg{width:22px;height:22px;color:var(--wa-dark)}
.pd-claim p{margin-top:8px;font-size:14px;color:#3D6E54;line-height:1.75}
.pd-claim .btn-wa{height:60px;width:100%;font-size:17px;margin-top:18px}
.pd-claim .or{position:relative;text-align:center;margin:14px 0;font-size:13px;color:#3D6B54}
.pd-claim .or::before,.pd-claim .or::after{content:"";position:absolute;top:50%;width:38%;height:1px;background:#BFEED4}
.pd-claim .or::before{left:0}
.pd-claim .or::after{right:0}
.pd-claim .qr{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid #CFE9D8;padding:12px;border-radius:14px}
.qr-img{
  width:88px;height:88px;border-radius:10px;flex-shrink:0;
  background:
    repeating-conic-gradient(#1a1a1a 0% 25%,transparent 0% 50%) 0 0/10px 10px,
    #fff;
  position:relative;
}
.qr-img::before{content:"";position:absolute;inset:30%;border-radius:50%;background:var(--wa)}
.qr-img::after{content:"";position:absolute;inset:8px;border:3px solid #fff;background:#fff;border-radius:6px}
.qr .qr-info b{display:block;font-size:14.5px;font-weight:800}
.qr .qr-info span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:3px}

.sku{margin-top:24px}
.sku__label{font-size:14.5px;font-weight:800;margin-bottom:12px;color:var(--ink)}
.sku__label span{color:var(--ink-3);font-weight:600;margin-left:8px}
.sku__opts{display:flex;flex-wrap:wrap;gap:11px}
.sku__opt{
  padding:12px 20px;border-radius:12px;border:1.5px solid var(--line);background:#fff;
  font-size:14.5px;font-weight:700;cursor:pointer;transition:all .18s;text-align:left;
}
.sku__opt small{display:block;font-size:12px;color:var(--ink-3);font-weight:600;margin-top:2px}
.sku__opt:hover{border-color:#E9CE93}
.sku__opt.active{border-color:var(--red);background:#FEF4F5;color:var(--red);box-shadow:0 0 0 3px rgba(200,16,46,.08)}

.pd-service{margin-top:24px;display:grid;gap:13px}
.pd-service div{display:flex;align-items:center;gap:11px;font-size:14px;color:var(--ink-2)}
.pd-service svg{width:19px;height:19px;color:var(--ok);flex-shrink:0}

.detail-sec{padding:64px 0;border-top:1px solid var(--line)}
.detail-sec:nth-child(odd){background:#fff}
.detail-sec .wrap-narrow>*+*{margin-top:22px}
.detail-h{display:flex;align-items:center;gap:14px;margin-bottom:28px}
.detail-h i{width:6px;height:26px;border-radius:4px;background:linear-gradient(180deg,var(--red),var(--gold))}
.detail-h h2{font-size:24px;font-weight:900}
.detail-p{font-size:16px;color:var(--ink-2);line-height:1.95}
.detail-p b{color:var(--ink)}
.detail-p+.detail-p{margin-top:16px}

.toc-card{display:flex;align-items:flex-start;gap:18px;padding:24px 26px;border-radius:var(--radius);border:1px solid var(--line);background:#FFFDF6;transition:border-color .2s,transform .2s}
.toc-card:hover{border-color:#F3D9A8;transform:translateX(4px)}
.toc-card__no{
  width:50px;height:50px;border-radius:14px;flex-shrink:0;display:grid;place-items:center;
  background:linear-gradient(135deg,#DA1435,#7C0819);color:var(--gold-2);font-weight:900;font-size:15px;
}
.toc-card h3{font-size:16.5px;font-weight:900;color:var(--ink);margin-bottom:6px}
.toc-card p{font-size:13.5px;color:var(--ink-2);line-height:1.7}
.toc-list{display:flex;flex-direction:column;gap:14px}

.mod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.mod{
  border-radius:var(--radius);border:1px solid var(--line);background:#fff;padding:24px 26px;
  position:relative;overflow:hidden;
}
.mod::before{
  content:attr(data-no);position:absolute;right:18px;top:-12px;font-size:62px;font-weight:900;color:#F7EEDF;line-height:1;
}
.mod>*{position:relative;z-index:1}
.mod__ic{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;margin-bottom:14px;background:linear-gradient(135deg,#FDEDE0,#F9DCC8);color:var(--red)}
.mod__ic svg{width:22px;height:22px}
.mod h3{font-size:16px;font-weight:900;margin-bottom:8px}
.mod ul li{font-size:13.5px;color:var(--ink-2);line-height:1.85;padding-left:18px;position:relative}
.mod ul li::before{content:"·";position:absolute;left:6px;color:var(--red);font-weight:900}

.related{background:var(--cream);padding:70px 0}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero__grid{grid-template-columns:1fr;gap:44px;padding:64px 0 72px}
  .hero__visual{min-height:380px}
  .hero__chips--l,.hero__chips--r{display:none}
  .trustbar .wrap{grid-template-columns:repeat(2,1fr);gap:20px}
  .trust{justify-content:flex-start}
  .pdf-grid,.feat-grid,.aud-grid,.step-grid,.mod-grid{grid-template-columns:1fr 1fr}
  .point-grid{grid-template-columns:1fr 1fr}
  .video-card{grid-template-columns:1fr}
  .video-card__cover{min-height:200px}
  .video-card__body{padding:30px 28px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .pd__grid{grid-template-columns:1fr;gap:40px}
  .gallery{position:static}
  .toc-card{flex-direction:column;align-items:flex-start;gap:14px}
  .toc-card__no{width:46px;height:46px;font-size:14px}
  .wa-fab{padding:14px 16px;font-size:0;gap:0;border-radius:50%}
  .wa-fab .wa-fab__label{display:none}
}
@media (max-width:720px){
  :root{--head-h:62px}
  .wrap{padding:0 18px}
  .sec{padding:58px 0}
  .nav{display:none}
  .burger{display:grid}
  .head-cta-wa,.head-cart{display:none}
  .feat-grid,.aud-grid,.step-grid,.mod-grid,
  .foot-grid,.trustbar .wrap{grid-template-columns:1fr 1fr}
  /* 资料卡片：手机端改单列全宽，避免文字挤压、按钮文字被裁 */
  .pdf-grid{grid-template-columns:1fr;gap:18px}
  .pdf-card__img{min-height:178px;padding:28px 20px}
  .pdf-doc{width:142px}
  .pdf-card__body{padding:22px 20px 24px}
  .pdf-card__cat{font-size:12px;letter-spacing:.1em;margin-bottom:8px}
  .pdf-card__title{font-size:20px}
  .pdf-card__mods{margin-top:15px;padding-top:15px;gap:8px}
  .pdf-card__mods li{font-size:13.5px}
  .pdf-card__cta{padding-top:18px}
  .pdf-card__cta .btn{height:48px;font-size:15px;padding:0 18px}
  .kx-wrap,.kx-defs,.point-grid{grid-template-columns:1fr}
  .video-card__body{padding:26px 22px}
  .video-card__body h3{font-size:20px}
  .wa-fab{width:56px;height:56px;padding:0;justify-content:center;right:16px;bottom:16px}
  .wa-chat{width:300px}
  .cta-band{padding:38px 26px}
  .risk{padding:26px 22px;flex-direction:column;gap:16px}
  .hero__stats{gap:24px}
}

.drawer{position:fixed;inset:var(--head-h) 0 0 0;z-index:80;background:rgba(32,19,15,.45);opacity:0;pointer-events:none;transition:opacity .22s}
.drawer.open{opacity:1;pointer-events:auto}
.drawer__panel{background:var(--paper);padding:22px;display:flex;flex-direction:column;gap:4px;transform:translateY(-12px);transition:transform .24s}
.drawer.open .drawer__panel{transform:translateY(0)}
.drawer__panel a{padding:15px 8px;font-size:16.5px;font-weight:700;border-bottom:1px solid var(--line)}
.drawer__panel .btn-wa{margin-top:18px}