:root{
  --sky:#0ea5e9;
  --sky-d:#0284c7;
  --sky-dd:#075985;
  --yellow:#facc15;
  --yellow-d:#eab308;
  --ink:#0f172a;
  --ink-2:#1e293b;
  --muted:#64748b;
  --paper:#f0f9ff;
  --panel:#ffffff;
  --line:#bae6fd;
  --soft:#e0f2fe;
  --shadow:0 24px 70px rgba(14,165,233,.16);
  --shadow-sm:0 8px 24px rgba(14,165,233,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html,body{overflow-x:hidden}
body{
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",-apple-system,sans-serif;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:.18;
  z-index:20;
  background-image:radial-gradient(circle at 20% 30%,rgba(14,165,233,.08),transparent 40%),radial-gradient(circle at 80% 60%,rgba(250,204,21,.08),transparent 40%);
}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none}
img{display:block;max-width:100%}
summary{list-style:none;cursor:pointer}
summary::-webkit-details-marker{display:none}
:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}

/* ===== 导航浮动圆角卡 ===== */
.tw-masthead{
  width:min(1240px,calc(100% - 40px));
  height:74px;
  margin:18px auto 0;
  padding:0 12px 0 15px;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:28px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:20px;
  position:relative;
  z-index:30;
  box-shadow:0 8px 30px rgba(14,165,233,.12);
  backdrop-filter:blur(12px);
}
.tw-brandmark{display:flex;align-items:center;gap:11px;min-width:max-content}
.tw-brandmark img{width:46px;height:46px;border-radius:13px}
.tw-brandmark span{display:grid;gap:2px}
.tw-brandmark strong{font-size:17px;font-weight:800}
.tw-brandmark small{font-size:8px;letter-spacing:1.4px;color:var(--sky-d)}
.tw-nav{display:flex;align-items:center;justify-content:center;gap:30px;font-size:14px;color:#475569}
.tw-nav a{position:relative;padding:12px 0}
.tw-nav a::after{content:"";position:absolute;height:2px;left:0;right:100%;bottom:5px;background:var(--sky);transition:right .25s ease}
.tw-nav a:hover::after{right:0}
.tw-header-action{padding:14px 18px;color:#fff;background:var(--sky);border-radius:13px;font-size:14px;font-weight:700;display:inline-flex;align-items:center;gap:7px}
.tw-header-action:hover{background:var(--sky-d)}
.tw-nav-toggle{display:none;font-size:24px;color:var(--ink);justify-self:end}

/* ===== Hero居中布局+角色卡牌组 ===== */
.tw-hero{
  width:min(1240px,calc(100% - 40px));
  margin:0 auto;
  padding:64px 0 40px;
  text-align:center;
  position:relative;
}
.tw-kicker{display:inline-flex;align-items:center;gap:10px;margin:0 0 19px;color:var(--sky-d);font-size:12px;font-weight:800;letter-spacing:1.4px;padding:6px 14px;border-radius:99px;background:var(--soft);border:1px solid var(--line)}
.tw-kicker span{width:22px;height:2px;background:currentColor}
.tw-hero h1{margin:0;font-size:clamp(44px,5.4vw,62px);line-height:1.05;font-weight:900}
.tw-hero h1 em{font-style:normal;color:var(--sky)}
.tw-hero-sub{max-width:640px;margin:22px auto 18px;font-size:clamp(17px,2vw,21px);color:var(--ink-2);font-weight:600;line-height:1.6}
.tw-hero-intro{max-width:620px;margin:0 auto 26px;color:var(--muted);font-size:15px;line-height:1.85}
.tw-hero-btns{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.tw-solid-action{display:inline-flex;align-items:center;gap:9px;padding:16px 26px;color:#fff;background:var(--sky);border-radius:13px;font-size:15px;font-weight:800;box-shadow:0 12px 24px rgba(14,165,233,.3);transition:transform .2s,box-shadow .2s}
.tw-solid-action:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(14,165,233,.4)}
.tw-ghost-action{padding:16px 22px;color:var(--ink);background:#fff;border:2px solid var(--line);border-radius:13px;font-size:15px;font-weight:700;display:inline-flex;align-items:center;gap:8px;transition:border-color .2s}
.tw-ghost-action:hover{border-color:var(--sky)}

/* 角色卡牌组（3张水平排列） */
.tw-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:980px;margin:0 auto}
.tw-card-role{background:#fff;border:2px solid var(--line);border-radius:20px;overflow:hidden;position:relative;transition:transform .25s,box-shadow .25s,border-color .25s}
.tw-card-role:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--sky)}
.tw-card-role:nth-child(2){transform:translateY(-14px)}
.tw-card-role:nth-child(2):hover{transform:translateY(-20px)}
.tw-card-role > figure{margin:0;position:relative;background:linear-gradient(150deg,var(--soft),#fff)}
.tw-card-role img{width:100%;height:auto;display:block;aspect-ratio:1/1.1;object-fit:cover}
.tw-card-role .badge{position:absolute;top:12px;left:12px;padding:4px 10px;background:var(--yellow);color:var(--ink);font-size:10px;font-weight:800;border-radius:99px;letter-spacing:.6px}
.tw-card-role:nth-child(2) .badge{background:var(--sky);color:#fff}
.tw-card-role:nth-child(3) .badge{background:#fff;color:var(--sky-d);border:1px solid var(--sky)}
.tw-card-role .body{padding:16px 18px;text-align:left}
.tw-card-role h3{font-size:16px;font-weight:800;margin-bottom:4px}
.tw-card-role .skill{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.tw-card-role .skill span{padding:4px 9px;background:var(--soft);border-radius:99px;font-size:10px;font-weight:700;color:var(--sky-d)}

/* ===== 玩法模式区（明黄底3卡） ===== */
.tw-modes{padding-inline:max(0px,calc((100vw - 1440px)/2));background:var(--yellow);color:var(--ink)}
.tw-modes-inner{display:grid;grid-template-columns:minmax(280px,.5fr) 1fr 1fr 1fr;max-width:1440px;margin:0 auto;align-items:stretch}
.tw-modes-lead{padding:56px 32px;border-right:1px solid rgba(15,23,42,.12)}
.tw-modes-lead .tw-kicker{background:rgba(15,23,42,.08);border-color:rgba(15,23,42,.18);color:var(--ink)}
.tw-modes-lead h2{font-size:clamp(26px,3vw,34px);font-weight:900;line-height:1.25;margin:16px 0 10px}
.tw-modes-lead p{font-size:13px;line-height:1.7;opacity:.82}
.tw-modes-card{padding:48px 26px;border-right:1px solid rgba(15,23,42,.12);position:relative;transition:background .25s}
.tw-modes-card:last-child{border:0}
.tw-modes-card:hover{background:rgba(255,255,255,.22)}
.tw-modes-card .ico{width:56px;height:56px;border-radius:16px;background:var(--ink);color:var(--yellow);display:grid;place-items:center;font-size:28px;margin-bottom:18px}
.tw-modes-card h3{font-size:20px;font-weight:900;margin-bottom:8px}
.tw-modes-card p{font-size:13px;line-height:1.7;opacity:.82;margin-bottom:14px}
.tw-modes-card .tag{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;background:var(--ink);color:var(--yellow);border-radius:99px;font-size:10px;font-weight:800;letter-spacing:.6px}

/* ===== 图文卡片网格2x2 ===== */
.tw-grid-sec{width:min(1240px,calc(100% - 40px));margin:0 auto;padding:80px 0}
.tw-grid-head{display:grid;grid-template-columns:minmax(280px,.5fr) 1fr;gap:48px;align-items:end;margin-bottom:40px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.tw-grid-head h2{font-size:clamp(28px,3.2vw,38px);font-weight:900;line-height:1.2}
.tw-grid-head p{color:var(--muted);font-size:15px;line-height:1.8;max-width:620px}
.tw-grid-2x2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.tw-grid-item{display:grid;grid-template-columns:1fr; background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:transform .25s,box-shadow .25s}
.tw-grid-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.tw-grid-item figure{margin:0;position:relative}
.tw-grid-item img{width:100%;height:auto;display:block;aspect-ratio:16/9;object-fit:cover}
.tw-grid-item .badge{position:absolute;top:14px;left:14px;padding:5px 11px;background:var(--sky);color:#fff;font-size:10px;font-weight:800;border-radius:99px}
.tw-grid-item .body{padding:24px}
.tw-grid-item h3{font-size:20px;font-weight:900;margin-bottom:8px}
.tw-grid-item p{color:var(--muted);font-size:14px;line-height:1.75}
.tw-grid-item .meta{display:flex;gap:14px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--sky-d);font-weight:700}
.tw-grid-item .meta span{display:inline-flex;align-items:center;gap:5px}

/* ===== 功能泡泡4圆 ===== */
.tw-bubbles{background:#fff;padding:72px max(20px,calc((100vw - 1240px)/2));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tw-bubbles-inner{max-width:1240px;margin:0 auto;text-align:center}
.tw-bubbles-inner h2{font-size:clamp(26px,3vw,34px);font-weight:900;margin-bottom:12px}
.tw-bubbles-inner > p{color:var(--muted);font-size:14px;line-height:1.8;max-width:560px;margin:0 auto 40px}
.tw-bubble-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.tw-bubble{display:flex;flex-direction:column;align-items:center;gap:14px;padding:24px 12px}
.tw-bubble .circle{width:88px;height:88px;border-radius:50%;background:linear-gradient(150deg,var(--sky),var(--sky-d));color:#fff;display:grid;place-items:center;font-size:38px;box-shadow:0 14px 30px rgba(14,165,233,.3);transition:transform .25s}
.tw-bubble:nth-child(2) .circle{background:linear-gradient(150deg,var(--yellow),var(--yellow-d));color:var(--ink);box-shadow:0 14px 30px rgba(250,204,21,.3)}
.tw-bubble:nth-child(3) .circle{background:linear-gradient(150deg,#a855f7,#7c3aed)}
.tw-bubble:nth-child(4) .circle{background:linear-gradient(150deg,#f97316,#ea580c)}
.tw-bubble:hover .circle{transform:translateY(-4px) scale(1.04)}
.tw-bubble h3{font-size:16px;font-weight:800}
.tw-bubble p{font-size:12px;color:var(--muted);line-height:1.6;max-width:160px}

/* ===== 评论单列大卡+侧边评分 ===== */
.tw-voices{width:min(1240px,calc(100% - 40px));margin:0 auto;padding:80px 0}
.tw-voices-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.tw-voices-list{display:grid;gap:14px}
.tw-voice-row{display:grid;grid-template-columns:auto 1fr auto;align-items:start;gap:18px;padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:16px;transition:box-shadow .25s}
.tw-voice-row:hover{box-shadow:var(--shadow-sm)}
.tw-voice-ava{width:46px;height:46px;border-radius:50%;background:var(--sky);color:#fff;display:grid;place-items:center;font-weight:800;font-size:16px;flex-shrink:0}
.tw-voice-row:nth-child(even) .tw-voice-ava{background:var(--yellow);color:var(--ink)}
.tw-voice-name{font-weight:800;font-size:14px}
.tw-voice-time{font-size:11px;color:var(--muted);margin-top:2px}
.tw-voice-body{font-size:13px;line-height:1.8;color:#475569;margin-top:8px}
.tw-voice-rate{color:var(--yellow-d);font-size:14px;letter-spacing:1px;white-space:nowrap}
.tw-voice-aside{position:sticky;top:100px;background:linear-gradient(150deg,var(--sky),var(--sky-d));color:#fff;border-radius:20px;padding:30px;text-align:center}
.tw-voice-aside b{display:block;font-size:56px;font-weight:900;line-height:1}
.tw-voice-aside .stars{color:var(--yellow);font-size:18px;letter-spacing:3px;margin:8px 0 14px}
.tw-voice-aside small{font-size:12px;opacity:.85;line-height:1.7;display:block}
.tw-voice-aside .bar{margin-top:20px;padding-top:20px;border-top:1px solid rgba(255,255,255,.25);font-size:11px;opacity:.85;line-height:1.8;text-align:left}

/* ===== FAQ手风琴单列 ===== */
.tw-faq{width:min(1240px,calc(100% - 40px));margin:0 auto;padding:80px 0}
.tw-faq-head{text-align:center;margin-bottom:40px}
.tw-faq-head .tw-kicker{margin-bottom:12px}
.tw-faq-head h2{font-size:clamp(28px,3.2vw,38px);font-weight:900;line-height:1.2}
.tw-faq-head p{color:var(--muted);font-size:14px;line-height:1.8;max-width:520px;margin:12px auto 0}
.tw-faq-acc{max-width:820px;margin:0 auto;display:grid;gap:12px}
.tw-faq-acc details{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .2s,box-shadow .2s}
.tw-faq-acc details[open]{border-color:var(--sky);box-shadow:var(--shadow-sm)}
.tw-faq-acc summary{padding:20px 24px;font-weight:700;font-size:15px;display:flex;align-items:center;gap:14px}
.tw-faq-acc summary::before{content:counter(faq,decimal-leading-zero);counter-increment:faq;width:30px;height:30px;border-radius:9px;background:var(--soft);color:var(--sky-d);font-size:11px;font-weight:800;display:grid;place-items:center;flex-shrink:0}
.tw-faq-acc{counter-reset:faq}
.tw-faq-acc summary i{margin-left:auto;color:var(--sky);font-size:20px;transition:transform .2s}
.tw-faq-acc details[open] summary i{transform:rotate(45deg)}
.tw-faq-acc details p{padding:0 24px 20px 68px;color:var(--muted);font-size:14px;line-height:1.8}

/* ===== CTA天蓝渐变全宽 ===== */
.tw-final-cta{margin:0;background:linear-gradient(120deg,var(--sky),var(--sky-d));color:#fff;position:relative;overflow:hidden}
.tw-final-cta::before{content:"";position:absolute;right:-40px;top:-40px;width:280px;height:280px;background:rgba(250,204,21,.25);border-radius:50%}
.tw-final-cta::after{content:"";position:absolute;left:-60px;bottom:-60px;width:200px;height:200px;background:rgba(255,255,255,.12);border-radius:50%}
.tw-final-cta-inner{width:min(1240px,calc(100% - 40px));margin:0 auto;padding:64px 0;display:grid;grid-template-columns:1fr auto;align-items:center;gap:40px;position:relative}
.tw-final-cta .tw-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.tw-final-cta .tw-brand img{width:38px;height:38px;border-radius:11px}
.tw-final-cta .tw-brand b{font-size:18px;font-weight:800}
.tw-final-cta h2{font-size:clamp(26px,3vw,34px);font-weight:900;line-height:1.25;margin-bottom:10px}
.tw-final-cta p{font-size:14px;opacity:.9;max-width:520px;line-height:1.7}
.tw-final-cta-actions{display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.tw-final-cta-btn{padding:18px 28px;background:var(--yellow);color:var(--ink);border-radius:13px;font-size:15px;font-weight:800;display:inline-flex;align-items:center;gap:9px;box-shadow:0 10px 24px rgba(250,204,21,.3);transition:transform .2s,box-shadow .2s}
.tw-final-cta-btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(250,204,21,.4)}
.tw-final-cta-btn.alt{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5)}
.tw-final-cta-btn.alt:hover{background:rgba(255,255,255,.12);border-color:#fff}
.tw-final-cta small{font-size:11px;opacity:.8}

/* ===== Footer ===== */
.tw-foot{background:var(--ink);color:#94a3b8;padding:54px max(20px,calc((100vw - 1240px)/2)) 24px}
.tw-foot-inner{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:32px;border-bottom:1px solid #1e293b}
.tw-foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.tw-foot-brand img{width:42px;height:42px;border-radius:12px}
.tw-foot-brand span{display:grid;gap:2px}
.tw-foot-brand b{color:#fff;font-size:18px}
.tw-foot-brand small{font-size:9px;letter-spacing:1.4px;color:#475569}
.tw-foot-about{font-size:13px;line-height:1.8;color:#64748b;max-width:380px}
.tw-foot-col h4{color:#fff;font-size:13px;font-weight:800;margin-bottom:14px;letter-spacing:.6px}
.tw-foot-col ul{list-style:none;display:grid;gap:8px}
.tw-foot-col a{font-size:13px;color:#94a3b8;transition:color .2s}
.tw-foot-col a:hover{color:var(--sky)}
.tw-foot-bottom{max-width:1240px;margin:0 auto;padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:12px;color:#64748b}
.tw-foot-bottom a{color:#94a3b8}
.tw-foot-bottom a:hover{color:var(--sky)}

/* ===== Backtop ===== */
.tw-backtop{position:fixed;right:24px;bottom:140px;width:46px;height:46px;border-radius:13px;background:var(--sky);color:#fff;display:grid;place-items:center;font-size:22px;z-index:40;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;box-shadow:0 8px 20px rgba(14,165,233,.4)}
.tw-backtop.is-show{opacity:1;pointer-events:auto}
.tw-backtop:hover{background:var(--sky-d);transform:translateY(-2px)}

/* ===== Responsive ===== */
@media(max-width:1080px){
  .tw-cards{grid-template-columns:1fr;max-width:480px}
  .tw-card-role:nth-child(2){transform:none}
  .tw-modes-inner{grid-template-columns:1fr}
  .tw-modes-lead{border-right:0;border-bottom:1px solid rgba(15,23,42,.12)}
  .tw-modes-card{border-right:0;border-bottom:1px solid rgba(15,23,42,.12)}
  .tw-voices-layout{grid-template-columns:1fr}
  .tw-voice-aside{position:static}
  .tw-final-cta-inner{grid-template-columns:1fr}
  .tw-final-cta-actions{align-items:flex-start}
  .tw-foot-inner{grid-template-columns:1fr 1fr;gap:32px}
  .tw-foot-brand{grid-column:1/-1}
}
@media(max-width:860px){
  .tw-nav{display:none}
  .tw-nav-toggle{display:block}
  .tw-grid-head{grid-template-columns:1fr;gap:16px}
  .tw-grid-2x2{grid-template-columns:1fr}
  .tw-bubble-row{grid-template-columns:1fr 1fr}
  .tw-voice-row{grid-template-columns:auto 1fr;gap:14px}
  .tw-voice-rate{grid-column:1/-1;margin-top:6px}
}
@media(max-width:640px){
  .tw-masthead{height:62px;gap:12px;padding:0 10px}
  .tw-brandmark strong{font-size:15px}
  .tw-brandmark small{display:none}
  .tw-header-action{padding:10px 12px;font-size:13px}
  .tw-hero{padding:40px 0 24px}
  .tw-hero h1{font-size:40px}
  .tw-hero-sub{font-size:18px}
  .tw-bubble-row{grid-template-columns:1fr 1fr}
  .tw-bubble .circle{width:72px;height:72px;font-size:30px}
  .tw-modes-card{padding:32px 20px}
  .tw-foot-inner{grid-template-columns:1fr}
  .tw-foot-bottom{flex-direction:column;text-align:center}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
}