/* =========================================================
   绿帽社 · 品牌设计系统  style.css
   1 设计变量  2 基础重置  3 布局工具  4 文字标题  5 按钮
   6 头部导航  7 卡片  8 Hero  9 跑马灯  10 视频卡  11 榜单
   12 话题/文章  13 数据/特性  14 评价  15 CTA/下载  16 FAQ
   17 提示条/弹层  18 页脚  19 内页页头  20 分页  21 滚动动画
   22 响应式  23 附加组件
   ========================================================= */

/* ---------- 1 设计变量 ---------- */
:root{
  --brand-900:#043B2E;
  --brand-700:#0A6B4C;
  --brand-600:#0E8A63;
  --brand-500:#12A97B;
  --brand-400:#3ECF9A;
  --brand-200:#9CF0D2;
  --brand-50:#EAFBF4;

  --ink:#0B2019;
  --ink-2:#2C4039;
  --muted:#63776F;
  --line:#DCEAE3;
  --paper:#FFFFFF;
  --bg:#F4FBF8;

  --sun:#FFC83D;
  --coral:#FF6B7E;
  --sky:#3FA9F5;
  --violet:#8B5CF6;

  --grad-brand:linear-gradient(135deg,#12A97B 0%,#0A6B4C 100%);
  --grad-dark:linear-gradient(150deg,#04301F 0%,#0A6B4C 58%,#0FA374 100%);
  --grad-sun:linear-gradient(135deg,#FFD75E 0%,#FFAF3D 100%);
  --grad-cool:linear-gradient(135deg,#3FA9F5 0%,#8B5CF6 100%);

  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:24px; --r-xl:32px; --r-full:999px;
  --sh-1:0 1px 2px rgba(4,59,46,.06);
  --sh-2:0 6px 16px -6px rgba(4,59,46,.14);
  --sh-3:0 16px 40px -16px rgba(4,59,46,.22);
  --sh-4:0 28px 70px -26px rgba(4,59,46,.34);
  --container:1200px;
  --gutter:20px;
  --ease:cubic-bezier(.22,1,.36,1);

  --fs-hero:clamp(2.3rem,5.2vw,3.9rem);
  --fs-h1:clamp(1.9rem,3.6vw,2.7rem);
  --fs-h2:clamp(1.5rem,2.6vw,2.1rem);
  --fs-h3:clamp(1.12rem,1.6vw,1.3rem);
  --fs-body:clamp(.95rem,.5vw + .85rem,1.02rem);
}

/* ---------- 2 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Outfit","Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:var(--fs-body);
  line-height:1.72;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{margin:0 0 .5em;line-height:1.22;color:var(--ink);font-weight:800;letter-spacing:-.015em}
h1{font-size:var(--fs-h1)}
h2{font-size:var(--fs-h2)}
h3{font-size:var(--fs-h3)}
h4{font-size:1.02rem}
p{margin:0 0 1em}
a{color:var(--brand-700);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-500)}
img{max-width:100%;height:auto;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font:inherit;color:inherit}
hr{border:0;border-top:1px solid var(--line);margin:2rem 0}
:focus-visible{outline:3px solid rgba(18,169,123,.45);outline-offset:2px;border-radius:6px}
::selection{background:rgba(18,169,123,.22)}

/* ---------- 3 布局工具 ---------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding:clamp(3rem,7vw,5.5rem) 0;position:relative}
.section-tight{padding:clamp(2rem,4vw,3.2rem) 0}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid-side{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(0,1fr);gap:28px;align-items:start}
.stack-sm>*+*{margin-top:.5rem}
.row{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.between{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.center{text-align:center}
.divider-dot{width:6px;height:6px;border-radius:50%;background:var(--brand-400);display:inline-block}
.muted{color:var(--muted)}
.small{font-size:.86rem}
.mt-0{margin-top:0}.mt-1{margin-top:.6rem}.mt-2{margin-top:1.2rem}.mt-3{margin-top:2rem}.mb-0{margin-bottom:0}
.hide-desktop{display:none}

/* ---------- 4 文字标题组件 ---------- */
.kicker{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.8rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--brand-600);background:var(--brand-50);
  border:1px solid rgba(18,169,123,.25);border-radius:var(--r-full);
  padding:.4rem 1rem;margin-bottom:1rem;
}
.kicker::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand-500)}
.sec-head{max-width:720px;margin-bottom:2.4rem}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head p{color:var(--muted);margin-bottom:0}
.mark{position:relative;z-index:0;white-space:nowrap}
.mark::after{
  content:"";position:absolute;left:-2%;right:-2%;bottom:.08em;height:.38em;
  background:linear-gradient(90deg,rgba(255,200,61,.85),rgba(255,200,61,.35));
  border-radius:6px;z-index:-1;transform:skewX(-8deg);
}
.lead{font-size:1.06rem;color:var(--ink-2)}
.num-ghost{
  font-size:clamp(2.4rem,6vw,4rem);font-weight:800;line-height:1;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- 5 按钮 ---------- */
.btn{
  --btn-bg:var(--brand-500);--btn-fg:#fff;
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  padding:.82rem 1.5rem;border-radius:var(--r-full);
  background:var(--btn-bg);color:var(--btn-fg);
  font-weight:700;font-size:.95rem;line-height:1.2;
  border:2px solid transparent;
  box-shadow:var(--sh-2);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
  text-align:center;white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--sh-3);color:var(--btn-fg)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--grad-brand)}
.btn-sun{background:var(--grad-sun);color:#4A3200}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:rgba(18,169,123,.45);box-shadow:none}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);box-shadow:none}
.btn-light{background:#fff;color:var(--brand-700)}
.btn-light:hover{color:var(--brand-900)}
.btn-dark{background:var(--brand-900);color:#fff}
.btn-sm{padding:.55rem 1.05rem;font-size:.86rem}
.btn-lg{padding:1rem 2rem;font-size:1.02rem}
.btn-block{width:100%}
.btn-group{display:flex;gap:14px;flex-wrap:wrap}
.icon-btn{
  width:42px;height:42px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);color:var(--brand-700);box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{transform:translateY(-2px);background:var(--brand-50)}

/* ---------- 6 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{border-color:var(--line);box-shadow:0 8px 24px -18px rgba(4,59,46,.35)}
.nav{display:flex;align-items:center;gap:18px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.18rem;color:var(--ink);letter-spacing:-.02em}
.brand:hover{color:var(--ink)}
.brand .logo{
  width:40px;height:40px;border-radius:13px;background:var(--grad-brand);
  display:grid;place-items:center;color:#fff;box-shadow:var(--sh-2);flex:none;
}
.brand small{
  display:block;font-size:.62rem;font-weight:600;color:var(--muted);
  letter-spacing:.22em;text-transform:uppercase;line-height:1;margin-top:2px;
}
.brand b{display:block;line-height:1.05}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  padding:.55rem .95rem;border-radius:var(--r-full);font-weight:600;font-size:.93rem;color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-links a:hover{background:var(--brand-50);color:var(--brand-700)}
.nav-links a.is-active{background:var(--brand-700);color:#fff}
.nav-links>.btn{margin-left:8px}
.nav-toggle{display:none;margin-left:auto;width:46px;height:46px;border-radius:14px;border:1px solid var(--line);background:#fff;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:13px;width:20px;height:2px;border-radius:2px;background:var(--brand-900);content:"";transition:.25s var(--ease);
}
.nav-toggle span{top:22px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-close{display:none}
.scrim{position:fixed;inset:0;background:rgba(4,48,31,.45);opacity:0;pointer-events:none;transition:opacity .3s var(--ease);z-index:70}
.scrim.is-open{opacity:1;pointer-events:auto}

/* ---------- 7 卡片 ---------- */
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:1.6rem;box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(18,169,123,.35)}
.card-pad-lg{padding:2rem}
.card-flat{box-shadow:none}
.card-accent{position:relative;overflow:hidden}
.card-accent::before{
  content:"";position:absolute;inset:0 0 auto 0;height:5px;background:var(--grad-brand);
}
.chip{
  display:inline-flex;align-items:center;gap:.4rem;
  font-size:.78rem;font-weight:700;padding:.32rem .8rem;border-radius:var(--r-full);
  background:var(--brand-50);color:var(--brand-700);border:1px solid rgba(18,169,123,.22);
}
.chip-sun{background:#FFF6DF;color:#8A6300;border-color:rgba(255,175,61,.4)}
.chip-coral{background:#FFEDF0;color:#C22B44;border-color:rgba(255,107,126,.35)}
.chip-sky{background:#E8F4FE;color:#1568B4;border-color:rgba(63,169,245,.35)}
.chip-violet{background:#F1EBFE;color:#6A3FD8;border-color:rgba(139,92,246,.35)}
.chip-gray{background:#F1F5F3;color:var(--muted);border-color:var(--line)}
.avatar{
  width:48px;height:48px;border-radius:50%;object-fit:cover;flex:none;
  border:2px solid #fff;box-shadow:0 0 0 2px var(--brand-200);
}
.tag-cloud{display:flex;flex-wrap:wrap;gap:.5rem}
.tag-cloud a{
  font-size:.82rem;padding:.3rem .75rem;border-radius:var(--r-full);
  background:#fff;border:1px solid var(--line);color:var(--muted);
}
.tag-cloud a:hover{background:var(--brand-50);color:var(--brand-700);border-color:rgba(18,169,123,.3)}

/* ---------- 8 Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--grad-dark);color:#fff;
  padding:clamp(3.4rem,7vw,6rem) 0 clamp(4rem,8vw,7rem);
  border-radius:0 0 var(--r-xl) var(--r-xl);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.14) 1.2px,transparent 1.2px);
  background-size:26px 26px;
}
.hero::after{
  content:"";position:absolute;width:640px;height:640px;right:-180px;top:-220px;pointer-events:none;
  background:radial-gradient(circle,rgba(62,207,154,.42),transparent 65%);
}
.hero .container{position:relative;z-index:2}
.hero h1,.hero h2,.hero h3{color:#fff}
.hero .kicker{background:rgba(255,255,255,.12);color:var(--brand-200);border-color:rgba(255,255,255,.22)}
.hero .kicker::before{background:var(--sun)}
.hero p{color:rgba(255,255,255,.82)}
.hero .mark::after{background:linear-gradient(90deg,rgba(255,200,61,.9),rgba(255,200,61,.4))}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center}
.hero h1{font-size:var(--fs-hero);margin-bottom:1rem}
.hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.hero .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.hero-stats{display:flex;gap:clamp(1.2rem,3vw,2.6rem);flex-wrap:wrap;margin-top:2.2rem;padding-top:1.6rem;border-top:1px solid rgba(255,255,255,.16)}
.hero-stats b{display:block;font-size:1.5rem;line-height:1.1}
.hero-stats span{font-size:.8rem;color:rgba(255,255,255,.62);letter-spacing:.04em}
/* 手机模型 */
.phone-wrap{position:relative;display:grid;place-items:center;min-height:420px}
.phone{
  width:264px;border-radius:38px;background:#071E17;
  border:7px solid #0F2C24;box-shadow:var(--sh-4);
  padding:14px;position:relative;z-index:2;
}
.phone::before{
  content:"";position:absolute;top:8px;left:50%;transform:translateX(-50%);
  width:78px;height:17px;border-radius:var(--r-full);background:#071E17;
}
.phone-screen{border-radius:26px;overflow:hidden;background:var(--bg)}
.phone-screen img{width:100%;height:150px;object-fit:cover}
.phone-ui{padding:.7rem .8rem .95rem}
.phone-ui .row{gap:.45rem}
.phone-line{height:9px;border-radius:6px;background:var(--brand-50);margin-top:.55rem}
.phone-line.w60{width:60%}
.phone-line.w40{width:40%}
.float-chip{
  position:absolute;background:#fff;color:var(--ink);border-radius:var(--r-md);
  box-shadow:var(--sh-3);padding:.65rem .9rem;font-size:.8rem;font-weight:700;
  display:flex;align-items:center;gap:.55rem;z-index:3;
}
.float-chip .dot{width:10px;height:10px;border-radius:50%;flex:none}
.fc-1{left:-2%;top:14%;animation:floaty 5.2s var(--ease) infinite}
.fc-2{right:-4%;top:44%;animation:floaty 6.4s var(--ease) .6s infinite}
.fc-3{left:4%;bottom:8%;animation:floaty 5.8s var(--ease) 1.2s infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ---------- 9 跑马灯 ---------- */
.ticker{
  position:relative;overflow:hidden;background:var(--brand-900);color:#fff;
  border-top:1px solid rgba(255,255,255,.08);
}
.ticker-track{display:flex;gap:0;width:max-content;animation:tick 34s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
.ticker-item{
  display:inline-flex;align-items:center;gap:.6rem;padding:.7rem 1.4rem;
  font-size:.86rem;font-weight:600;white-space:nowrap;
}
.ticker-item .no{
  font-size:.72rem;font-weight:800;color:var(--brand-900);background:var(--sun);
  border-radius:6px;padding:.05rem .38rem;
}
.ticker-item .trend{font-size:.72rem;font-weight:700}
.up{color:#FF9BA8}.down{color:#8FE8C4}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- 10 视频卡 ---------- */
.vcard{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.vcard:hover{transform:translateY(-5px);box-shadow:var(--sh-3)}
.thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-50)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.vcard:hover .thumb img{transform:scale(1.05)}
.thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,48,31,0) 45%,rgba(4,48,31,.5));pointer-events:none}
.badge{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:.72rem;font-weight:800;padding:.3rem .7rem;border-radius:var(--r-full);
  background:rgba(255,255,255,.94);color:var(--brand-900);box-shadow:var(--sh-1);
}
.badge-sun{background:var(--sun);color:#4A3200}
.badge-live{background:var(--coral);color:#fff}
.dur{
  position:absolute;right:12px;bottom:12px;z-index:2;
  font-size:.72rem;font-weight:700;color:#fff;background:rgba(4,48,31,.78);
  padding:.2rem .55rem;border-radius:8px;
}
.playbtn{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.9);z-index:3;
  width:56px;height:56px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.94);color:var(--brand-700);
  box-shadow:var(--sh-2);opacity:0;transition:opacity .28s var(--ease),transform .28s var(--ease);
}
.playbtn svg{margin-left:3px}
.vcard:hover .playbtn,.vcard:focus-within .playbtn{opacity:1;transform:translate(-50%,-50%) scale(1)}
.vbody{padding:1.05rem 1.2rem 1.25rem;display:flex;flex-direction:column;gap:.55rem;flex:1}
.vbody h3{font-size:1.02rem;margin:0;line-height:1.4}
.vmeta{display:flex;gap:.8rem;font-size:.8rem;color:var(--muted);flex-wrap:wrap;align-items:center}
.vfoot{display:flex;justify-content:space-between;align-items:center;gap:.6rem;margin-top:auto;padding-top:.4rem;flex-wrap:wrap}
.vacts{display:flex;gap:.9rem;font-size:.8rem;color:var(--muted);white-space:nowrap}
.vacts span{display:inline-flex;align-items:center;gap:.3rem}
.watch-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}
/* 播放器 */
.player{background:#04301F;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3)}
.player-screen{position:relative;aspect-ratio:16/9;overflow:hidden}
.player-screen img{width:100%;height:100%;object-fit:cover;opacity:.82}
.player-screen::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,48,31,.1),rgba(4,48,31,.72))}
.player-ui{position:absolute;inset:auto 0 0 0;z-index:2;padding:1rem 1.2rem;display:flex;align-items:center;gap:1rem;color:#fff}
.player-ui .btn{box-shadow:none}
.bigplay{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:3;
  width:88px;height:88px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.94);color:var(--brand-700);box-shadow:var(--sh-3);
  transition:transform .25s var(--ease);
}
.bigplay:hover{transform:translate(-50%,-50%) scale(1.07)}
.player-bar{height:6px;background:rgba(255,255,255,.22);border-radius:6px;flex:1;position:relative;overflow:hidden}
.player-bar::after{content:"";position:absolute;inset:0;width:38%;background:var(--sun);border-radius:6px}
.ep-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.ep{
  display:flex;gap:.8rem;align-items:center;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-md);padding:.55rem;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.ep:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(18,169,123,.4)}
.ep img{width:88px;height:54px;object-fit:cover;border-radius:10px;flex:none}
.ep b{font-size:.85rem;line-height:1.35;display:block}
.ep span{font-size:.74rem;color:var(--muted)}

/* ---------- 11 榜单 ---------- */
.rank-panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.rank-head{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1.1rem 1.3rem;border-bottom:1px solid var(--line);flex-wrap:wrap}
.rank-head h3{margin:0;display:flex;align-items:center;gap:.55rem}
.rank-head .live-dot{width:9px;height:9px;border-radius:50%;background:var(--coral);box-shadow:0 0 0 4px rgba(255,107,126,.2);animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.rank-item{
  display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:1rem;align-items:center;
  padding:.85rem 1.3rem;border-bottom:1px solid var(--line);transition:background .2s var(--ease);
}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{background:var(--brand-50)}
.rank-no{
  font-size:1.15rem;font-weight:800;text-align:center;width:40px;height:40px;
  display:grid;place-items:center;border-radius:12px;background:var(--bg);color:var(--muted);
}
.rank-no.g1{background:var(--grad-sun);color:#4A3200}
.rank-no.g2{background:#E9EDF1;color:#5A6B78}
.rank-no.g3{background:#F6E3D3;color:#96562B}
.rank-main{min-width:0}
.rank-main b{display:block;font-size:.94rem;line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-main span{font-size:.76rem;color:var(--muted)}
.rank-end{display:flex;align-items:center;gap:.9rem;white-space:nowrap}
.score{font-weight:800;font-size:.95rem;color:var(--brand-700)}
.score small{display:block;font-size:.68rem;font-weight:600;color:var(--muted);text-align:right}
.rank-thumb{width:64px;height:42px;border-radius:10px;object-fit:cover;flex:none}
.heat{display:inline-flex;align-items:center;gap:.3rem;font-size:.78rem;font-weight:800;padding:.22rem .6rem;border-radius:var(--r-full);background:#FFEDF0;color:#C22B44}
.heat-hot{background:var(--grad-sun);color:#4A3200}
.medal-tag{font-size:.7rem;padding:.12rem .5rem;border-radius:6px;background:var(--brand-50);color:var(--brand-700);font-weight:700}
/* 榜单切换 tabs */
.tabs{display:flex;gap:.5rem;flex-wrap:wrap}
.tab{
  padding:.5rem 1.1rem;border-radius:var(--r-full);font-weight:700;font-size:.88rem;
  background:#fff;border:1px solid var(--line);color:var(--muted);
  transition:.2s var(--ease);
}
.tab:hover{color:var(--brand-700);border-color:rgba(18,169,123,.4)}
.tab.is-active{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}

/* ---------- 12 话题/文章 ---------- */
.filter-chips{display:flex;gap:.55rem;flex-wrap:wrap;margin-bottom:1.8rem}
.fchip{
  padding:.45rem 1.05rem;border-radius:var(--r-full);font-weight:700;font-size:.87rem;
  background:#fff;border:1px solid var(--line);color:var(--muted);transition:.2s var(--ease);
}
.fchip:hover{color:var(--brand-700);border-color:rgba(18,169,123,.4)}
.fchip.is-active{background:var(--brand-500);color:#fff;border-color:var(--brand-500)}
.topic-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .28s var(--ease),box-shadow .28s var(--ease)}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.topic-cover{aspect-ratio:16/10;overflow:hidden;position:relative;background:var(--brand-50)}
.topic-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.topic-card:hover .topic-cover img{transform:scale(1.06)}
.topic-body{padding:1.15rem 1.25rem 1.3rem;display:flex;flex-direction:column;gap:.6rem;flex:1}
.topic-title{font-size:1.06rem;margin:0;line-height:1.4}
.topic-tags{display:flex;gap:.4rem;flex-wrap:wrap}
.topic-foot{display:flex;justify-content:space-between;align-items:center;gap:.6rem;margin-top:auto;padding-top:.3rem;font-size:.8rem;color:var(--muted);flex-wrap:wrap}
.hash{font-weight:800;color:var(--brand-600)}
.post{
  display:grid;grid-template-columns:minmax(0,1fr) 132px;gap:1.1rem;align-items:center;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:1.05rem 1.2rem;transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.post:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.post + .post{margin-top:14px}
.post h3{font-size:1.04rem;margin:0 0 .3rem}
.post p{font-size:.88rem;color:var(--muted);margin:0 0 .5rem}
.post img{width:132px;height:88px;object-fit:cover;border-radius:var(--r-sm)}
.compose{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.4rem;box-shadow:var(--sh-1)}
.compose textarea{
  width:100%;min-height:96px;resize:vertical;border:1px solid var(--line);
  border-radius:var(--r-md);padding:.85rem 1rem;background:var(--bg);
}
.compose textarea:focus{outline:none;border-color:var(--brand-500);background:#fff}
.prose{max-width:780px}
.prose p{color:var(--ink-2)}
.prose h3{margin-top:2rem}
.prose ul{list-style:none;padding-left:0;margin:0 0 1.2em}
.prose li{position:relative;padding-left:1.6rem;margin-bottom:.55em;color:var(--ink-2)}
.prose li::before{
  content:"";position:absolute;left:0;top:.55em;width:.85rem;height:.4rem;border-radius:4px;
  background:var(--grad-brand);
}

/* ---------- 13 数据/特性 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:1.6rem 1.4rem;text-align:center;box-shadow:var(--sh-1);
}
.stat b{display:block;font-size:clamp(1.7rem,3vw,2.3rem);line-height:1.1;color:var(--brand-700)}
.stat span{font-size:.84rem;color:var(--muted)}
.feature{display:flex;gap:1.1rem;align-items:flex-start}
.feature .fico{
  width:52px;height:52px;flex:none;border-radius:16px;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand-700);border:1px solid rgba(18,169,123,.22);
}
.feature h3{font-size:1.06rem;margin-bottom:.3rem}
.feature p{margin:0;font-size:.9rem;color:var(--muted)}
.copyright-note{font-size:.8rem;color:var(--muted)}
.notice{
  display:flex;gap:.9rem;align-items:flex-start;
  background:var(--brand-50);border:1px dashed rgba(18,169,123,.45);
  border-radius:var(--r-md);padding:1rem 1.2rem;font-size:.88rem;color:var(--ink-2);
}
.notice .nico{flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:#fff;color:var(--brand-700);box-shadow:var(--sh-1)}

/* ---------- 14 评价 ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.quote{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.6rem;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:1rem}
.quote .stars{color:var(--sun);letter-spacing:.12em;font-size:.95rem}
.quote p{margin:0;font-size:.94rem;color:var(--ink-2)}
.quote .who{display:flex;align-items:center;gap:.8rem;margin-top:auto}
.quote .who b{display:block;font-size:.92rem;line-height:1.3}
.quote .who span{font-size:.78rem;color:var(--muted)}

/* ---------- 15 CTA/下载 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad-dark);color:#fff;padding:clamp(2.4rem,5vw,4rem);
  box-shadow:var(--sh-4);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.45;
  background-image:radial-gradient(rgba(255,255,255,.16) 1.2px,transparent 1.2px);background-size:24px 24px;
}
.cta-band>*{position:relative;z-index:2}
.cta-band h1,.cta-band h2,.cta-band h3{color:#fff}
.cta-band p{color:rgba(255,255,255,.82)}
.cta-flex{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:2.5rem;align-items:center}
.store-btn{
  display:flex;align-items:center;gap:.9rem;background:#fff;color:var(--brand-900);
  border-radius:var(--r-md);padding:.75rem 1.2rem;box-shadow:var(--sh-2);min-width:190px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.store-btn:hover{transform:translateY(-3px);box-shadow:var(--sh-3);color:var(--brand-900)}
.store-btn svg{flex:none;color:var(--brand-700)}
.store-btn small{display:block;font-size:.7rem;color:var(--muted);line-height:1.2}
.store-btn b{font-size:1rem;line-height:1.25}
.qr-box{
  display:inline-grid;place-items:center;gap:.6rem;background:#fff;border-radius:var(--r-lg);
  padding:1.1rem 1.3rem 1rem;box-shadow:var(--sh-3);color:var(--brand-900);text-align:center;
}
.qr-box .qr{width:132px;height:132px;border-radius:12px;background:var(--brand-900);display:grid;place-items:center;overflow:hidden}
.qr-box span{font-size:.78rem;font-weight:700;color:var(--muted)}
.mascot{width:132px;height:132px;flex:none}
/* 下载页平台列表 */
.plat{
  display:flex;align-items:center;gap:1rem;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-md);padding:.9rem 1.1rem;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.plat:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(18,169,123,.4)}
.plat .pico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--brand-50);color:var(--brand-700);flex:none}
.plat b{display:block;font-size:.94rem}
.plat span{font-size:.76rem;color:var(--muted)}
.plat .btn{margin-left:auto}

/* ---------- 16 FAQ ---------- */
.faq-list{max-width:820px;margin-inline:auto}
.faq{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--ease)}
.faq.is-open{border-color:rgba(18,169,123,.45)}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:1rem;
  text-align:left;padding:1.05rem 1.25rem;font-weight:700;font-size:.98rem;
}
.faq-q .pm{
  flex:none;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand-700);font-weight:800;transition:transform .3s var(--ease);
}
.faq.is-open .faq-q .pm{transform:rotate(45deg);background:var(--brand-700);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.faq-a>div{padding:0 1.25rem 1.15rem;color:var(--muted);font-size:.92rem}

/* ---------- 17 提示条/弹层 ---------- */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);
  background:var(--brand-900);color:#fff;padding:.75rem 1.3rem;border-radius:var(--r-full);
  font-size:.88rem;font-weight:600;box-shadow:var(--sh-3);opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);z-index:120;
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}
.modal{
  position:fixed;inset:0;z-index:110;display:grid;place-items:center;padding:20px;
  background:rgba(4,48,31,.72);opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.modal.is-open{opacity:1;pointer-events:auto}
.modal-box{
  position:relative;background:#04301F;border-radius:var(--r-lg);width:min(880px,100%);
  box-shadow:var(--sh-4);transform:translateY(16px);transition:transform .3s var(--ease);
}
.modal.is-open .modal-box{transform:translateY(0)}
.modal-box img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg) var(--r-lg) 0 0}
.modal-cap{padding:1rem 1.3rem 1.2rem;color:#fff}
.modal-cap b{font-size:1.02rem}
.modal-cap p{margin:.3rem 0 0;font-size:.84rem;color:rgba(255,255,255,.7)}
.modal-close{
  position:absolute;top:12px;right:12px;z-index:3;width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,.94);color:var(--brand-900);display:grid;place-items:center;font-size:1.2rem;
}
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:100;width:48px;height:48px;border-radius:50%;
  background:var(--brand-700);color:#fff;display:grid;place-items:center;box-shadow:var(--sh-3);
  opacity:0;pointer-events:none;transform:translateY(10px);transition:.3s var(--ease);
}
.to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--brand-500)}

/* ---------- 18 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);margin-top:clamp(3rem,6vw,5rem);border-radius:var(--r-xl) var(--r-xl) 0 0;padding-top:clamp(2.6rem,5vw,4rem)}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:1rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:2.2rem}
.footer-grid a{color:rgba(255,255,255,.78);font-size:.9rem;display:inline-block;padding:.22rem 0}
.footer-grid a:hover{color:var(--brand-200)}
.footer-brand p{font-size:.88rem;color:rgba(255,255,255,.62);max-width:300px}
.footer-bottom{
  margin-top:2.4rem;padding:1.4rem 0 1.8rem;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.8rem;color:rgba(255,255,255,.5);
}
.disclaim{font-size:.76rem;color:rgba(255,255,255,.44);line-height:1.7;max-width:860px;margin-top:1.4rem}

/* ---------- 19 内页页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--grad-dark);color:#fff;
  padding:clamp(2.6rem,5vw,4.2rem) 0;border-radius:0 0 var(--r-xl) var(--r-xl);
}
.page-hero::before{
  content:"";position:absolute;inset:0;opacity:.4;
  background-image:radial-gradient(rgba(255,255,255,.14) 1.2px,transparent 1.2px);background-size:26px 26px;
}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{color:#fff;font-size:var(--fs-h1);margin-bottom:.5rem}
.page-hero p{color:rgba(255,255,255,.78);max-width:640px;margin-bottom:0}
.crumbs{display:flex;gap:.5rem;align-items:center;font-size:.82rem;color:rgba(255,255,255,.62);margin-bottom:1rem;flex-wrap:wrap}
.crumbs a{color:rgba(255,255,255,.78)}
.crumbs a:hover{color:var(--sun)}
.sidebar-card{position:sticky;top:96px}
.side-title{display:flex;align-items:center;gap:.55rem;margin-bottom:1rem}
.side-title h3{margin:0;font-size:1.02rem}
.mini-list li+li{border-top:1px dashed var(--line)}
.mini-list a{display:flex;justify-content:space-between;gap:.8rem;padding:.6rem 0;font-size:.9rem}
.mini-list a b{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mini-list a span{color:var(--muted);font-size:.8rem;white-space:nowrap}

/* ---------- 20 分页 ---------- */
.pagination{display:flex;gap:.45rem;justify-content:center;margin-top:2.6rem;flex-wrap:wrap}
.pagination a,.pagination span{
  min-width:42px;height:42px;display:inline-grid;place-items:center;padding:0 .7rem;
  border-radius:12px;border:1px solid var(--line);background:#fff;font-weight:700;font-size:.9rem;color:var(--muted);
}
.pagination a:hover{color:var(--brand-700);border-color:rgba(18,169,123,.4)}
.pagination .is-cur{background:var(--brand-700);border-color:var(--brand-700);color:#fff}

/* ---------- 21 滚动动画 ---------- */
.js-ready [data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js-ready [data-reveal].is-in{opacity:1;transform:none}
.js-ready [data-reveal]{animation:reveal-safety .01s linear 2.4s forwards}
@keyframes reveal-safety{to{opacity:1;transform:none}}

/* ---------- 22 响应式 ---------- */
@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .quotes{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-grid{gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .phone-wrap{min-height:380px}
}
@media (max-width:960px){
  .nav{min-height:66px}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:80;
    background:#fff;flex-direction:column;align-items:stretch;gap:2px;
    padding:1.2rem 1.2rem 2rem;box-shadow:var(--sh-4);
    transform:translateX(105%);transition:transform .34s var(--ease);overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{padding:.85rem 1rem;border-radius:var(--r-md);font-size:1rem}
  .nav-links a.is-active{background:var(--brand-50);color:var(--brand-700)}
  .nav-links>.btn{margin:1rem 0 0;display:inline-flex}
  .nav-close{
    display:grid;place-items:center;width:42px;height:42px;border-radius:12px;
    background:var(--bg);font-size:1.25rem;margin-bottom:.6rem;
  }
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero .sec-head,.hero .kicker{margin-inline:auto}
  .hero .btn-group{justify-content:center}
  .hero-stats{justify-content:center}
  .grid-side{grid-template-columns:1fr}
  .sidebar-card{position:static}
  .phone-wrap{min-height:340px;margin-top:.6rem}
  .cta-flex{grid-template-columns:1fr}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:680px){
  .grid-2,.grid-3,.grid-4,.stat-grid,.quotes,.watch-grid{grid-template-columns:1fr}
  .post{grid-template-columns:1fr}
  .post img{width:100%;height:170px}
  .btn-group .btn{flex:1 1 100%}
  .rank-item{grid-template-columns:34px minmax(0,1fr);gap:.7rem;padding:.8rem .9rem}
  .rank-no{width:34px;height:34px;font-size:.95rem;border-radius:10px}
  .rank-end{grid-column:2/-1;justify-content:space-between}
  .rank-thumb{width:76px;height:48px}
  .float-chip{font-size:.72rem;padding:.5rem .7rem}
  .fc-1{left:-1%}.fc-2{right:-2%}.fc-3{left:0}
  .phone{width:232px}
  .footer-grid{grid-template-columns:1fr;gap:1.6rem}
  .footer-bottom{flex-direction:column}
  .section{padding:clamp(2.4rem,6vw,3.4rem) 0}
  .ep-grid{grid-template-columns:1fr}
  .hide-desktop{display:block}
  .fc-2,.fc-3{display:none}
}
@media (max-width:420px){
  :root{--gutter:16px}
  .btn{padding:.75rem 1.1rem;font-size:.9rem}
  .brand b{font-size:1.05rem}
  .float-chip{display:none}
  .phone{width:214px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.001s!important;scroll-behavior:auto!important}
  .js-ready [data-reveal]{opacity:1!important;transform:none!important}
}

/* ---------- 23 附加组件 ---------- */
/* 观察方法论时间线 */
.steps{display:grid;gap:18px;counter-reset:st}
.step{
  position:relative;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:1.4rem 1.5rem 1.4rem 4.6rem;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.step::before{
  counter-increment:st;content:counter(st,decimal-leading-zero);
  position:absolute;left:1.1rem;top:1.35rem;width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;background:var(--grad-brand);color:#fff;font-weight:800;font-size:.95rem;
}
.step h3{font-size:1.05rem;margin-bottom:.3rem}
.step p{margin:0;font-size:.9rem;color:var(--muted)}
/* 键值对照表 */
.kv{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px}
.kv .card{padding:1.2rem 1.3rem}
.kv h4{display:flex;align-items:center;gap:.5rem;margin-bottom:.6rem}
.kv ul li{position:relative;padding-left:1.4rem;margin-bottom:.45em;font-size:.9rem;color:var(--ink-2)}
.kv ul li::before{content:"";position:absolute;left:0;top:.5em;width:.8rem;height:.32rem;border-radius:4px;background:var(--brand-400)}
.kv .no ul li::before{background:var(--coral)}
@media (max-width:680px){
  .kv{grid-template-columns:1fr}
  .step{padding:1.2rem 1.2rem 1.2rem 4.2rem}
  .step::before{left:.9rem;width:38px;height:38px}
}