/* ============ Q525 设计系统 ============ */
:root{
  --blue:#4B7BFF; --purple:#8B5CF6;
  --grad:linear-gradient(135deg,#4B7BFF 0%,#8B5CF6 100%);
  --grad-soft:linear-gradient(135deg,rgba(75,123,255,.10),rgba(139,92,246,.10));
  --slate:#64748B; --ink:#1E293B; --ink-soft:#475569;
  --slate-50:#F8FAFC; --slate-100:#F1F5F9; --slate-200:#E2E8F0;
  --orange:#FF6B35; --green:#10B981; --green-bg:#ECFDF5; --green-bd:#10B981;
  --indigo-1:#1E1B4B; --indigo-2:#312E81;
  --card:#FFFFFF; --shadow:0 10px 30px rgba(30,41,59,.08);
  --shadow-lg:0 20px 50px rgba(49,46,129,.18);
  --radius:18px; --radius-sm:12px;
  --maxw:1180px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--slate-50);line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.muted{color:var(--slate)}
.section{padding:84px 0}
.section-title{font-size:30px;font-weight:800;letter-spacing:.5px;margin-bottom:10px}
.section-sub{color:var(--slate);max-width:680px;margin-bottom:38px;font-size:15.5px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;
  color:var(--blue);background:var(--grad-soft);padding:6px 14px;border-radius:99px;margin-bottom:16px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:99px;
  font-weight:700;font-size:15px;cursor:pointer;border:none;transition:.22s;font-family:var(--font)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(99,102,241,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(99,102,241,.45)}
.btn-ghost{background:#fff;color:var(--ink);border:1.5px solid var(--slate-200)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 8px 22px rgba(255,107,53,.35)}
.btn-orange:hover{transform:translateY(-2px)}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--slate-200)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:20px;letter-spacing:.5px}
.logo .mark{width:38px;height:38px;flex:none}
.logo small{display:block;font-size:10.5px;font-weight:600;color:var(--slate);letter-spacing:1px}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:9px 15px;border-radius:10px;font-weight:600;font-size:15px;color:var(--ink-soft)}
.nav-links a:hover{background:var(--grad-soft);color:var(--blue)}
.nav-links a.active{color:var(--blue);background:var(--grad-soft)}
/* 注意：.nav-links a 的优先级高于 .nav-cta，必须写成 .nav-links a.nav-cta 才能覆盖文字色与背景 */
.nav-links a.nav-cta{margin-left:8px;background:linear-gradient(135deg,#3730A3 0%,#1E1B4B 100%);
  box-shadow:0 8px 20px rgba(30,27,75,.45);color:#fff !important;border:1px solid rgba(255,255,255,.18)}
.nav-links a.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(30,27,75,.55);
  background:linear-gradient(135deg,#2E2793 0%,#171543 100%);color:#fff !important}
/* 深色背景上的玻璃按钮（hero 使用） */
.btn-glass{background:rgba(255,255,255,.10);color:#fff;border:1.5px solid rgba(255,255,255,.45)}
.btn-glass:hover{background:rgba(255,255,255,.22);transform:translateY(-2px)}
.btn-glass svg{flex:none}
.nav-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--ink)}

/* hero */
.hero{position:relative;background:radial-gradient(1200px 600px at 70% -10%,rgba(139,92,246,.45),transparent),
  linear-gradient(160deg,var(--indigo-1),var(--indigo-2));
  color:#fff;overflow:hidden;padding:78px 0 96px}
.hero .blob{position:absolute;border-radius:50%;filter:blur(8px);opacity:.22;pointer-events:none}
.hero .b1{width:420px;height:420px;background:var(--blue);top:-120px;right:-80px}
.hero .b2{width:340px;height:340px;background:var(--purple);bottom:-140px;left:-60px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:46px;line-height:1.18;font-weight:800;letter-spacing:1px}
.hero .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}
.hero .tag{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  padding:7px 14px;border-radius:99px;font-size:13.5px;font-weight:600}
.hero p.lead{font-size:16.5px;color:rgba(255,255,255,.82);max-width:560px}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:22px;padding:26px;backdrop-filter:blur(8px)}
.hero-stat{display:flex;gap:22px;margin-top:8px}
.hero-stat .n{font-size:30px;font-weight:800}
.hero-stat .l{font-size:13px;color:rgba(255,255,255,.7)}
/* 课程中心 banner 底部：左侧数据、右侧北师大 logo */
.hero-bottom{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;
  flex-wrap:wrap;margin-top:32px}
.hero-bottom .hero-stat{margin-top:0}

/* spiral logo */
.spiral{position:relative}
.spiral svg{display:block}
.story-lead{font-size:16.5px;color:var(--ink-soft);line-height:1.95;margin-bottom:18px}
.story-lead:last-child{margin-bottom:0}
.story-who{font-weight:800;color:var(--blue);margin-bottom:8px;font-size:15px}
.card.story p{font-size:15px;color:var(--ink-soft);line-height:1.85}
/* BNU badge */
.bnu-badge{display:inline-flex;align-items:center;gap:6px;background:var(--grad-soft);
  border:1px solid var(--slate-200);border-radius:99px;padding:4px 12px 4px 6px;
  font-size:12px;font-weight:700;color:var(--ink-soft);align-self:flex-start}
.bnu-badge .bnu-svg{width:20px;height:20px;flex:none}
.bnu-img{width:auto;height:22px;object-fit:contain;flex:none}
.bnu-inline{display:inline-flex;align-items:center;gap:10px;margin-bottom:10px}
.bnu-inline .bnu-svg{width:34px;height:34px}
.bnu-inline .bnu-img{height:40px}
.bnu-hero-band{display:inline-flex;align-items:center;gap:12px;background:#fff;
  border-radius:12px;padding:10px 16px;box-shadow:0 8px 22px rgba(15,23,42,.18)}
.bnu-hero-band .bnu-img{height:34px}
.bnu-hero-band span{font-weight:700;font-size:14.5px;color:var(--ink)}
/* 联合出品 logo 区 */
.credit-band{background:#fff}
.credit-row{display:flex;gap:22px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.credit-card{display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:26px 34px;border-radius:18px;min-width:230px;border:1px solid var(--slate-200)}
.credit-card .clogo{height:52px;display:flex;align-items:center;justify-content:center}
.credit-card .clogo img{height:46px;width:auto;object-fit:contain}
.credit-card .clogo img.on-dark{height:26px}
.credit-card .clogo img.qwen-mark{height:36px}
.credit-card .clogo .dark-chip{background:linear-gradient(135deg,#262155,#171543);
  border-radius:12px;padding:12px 20px;display:flex;align-items:center}
.credit-card .clabel{font-weight:700;font-size:14.5px}
.credit-card .csub{font-size:12.5px;color:var(--slate)}
/* 页脚出品 logo */
.footer-credit{display:flex;align-items:center;gap:14px;margin:14px 0 6px}
.footer-credit .qwen-chip{background:#fff;border-radius:10px;padding:8px 12px;display:flex;align-items:center}
.footer-credit img{height:24px;width:auto}
.footer-credit .bnu-chip{background:#fff;border-radius:10px;padding:8px 12px;display:flex;align-items:center}

/* cards / grid */
.grid{display:grid;gap:22px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);
  border:1px solid var(--slate-100);transition:.22s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card .ico{width:46px;height:46px;border-radius:13px;background:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--slate);font-size:14.5px}
.kpi{text-align:center;padding:30px 18px}
.kpi .n{font-size:40px;font-weight:800;line-height:1}
.kpi .l{color:var(--slate);margin-top:8px;font-size:14px}
.kpi .n.orange{color:var(--orange)}

/* tags */
.tagmod{display:inline-block;font-size:12px;font-weight:700;padding:4px 10px;border-radius:8px;
  background:var(--grad-soft);color:var(--purple)}
.tagmod.blue{color:var(--blue)}
.tagg{display:inline-block;font-size:12px;font-weight:700;padding:4px 10px;border-radius:8px;
  background:var(--green-bg);color:var(--green)}

/* module strip */
.modstrip{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.modchip{flex:1 1 150px;background:#fff;border:1px solid var(--slate-200);border-radius:14px;
  padding:16px 18px;position:relative;overflow:hidden}
.modchip::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--grad)}
.modchip b{display:block;font-size:15.5px}
.modchip span{font-size:13px;color:var(--slate)}

/* compliance alert */
.alert{display:flex;gap:14px;background:var(--green-bg);border-left:5px solid var(--green-bd);
  border-radius:12px;padding:18px 20px;margin:18px 0}
.alert .ai{flex:none;width:30px;height:30px;border-radius:50%;background:var(--green);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800}
.alert p{font-size:14.5px;color:var(--ink-soft)}
.alert b{color:#047857}
.alert.orange{background:#FFF4EE;border-left-color:var(--orange)}
.alert.orange .ai{background:var(--orange)}
/* 合规承诺卡：沿用全站卡片，仅图标与标题取合规绿，与「责任与安全」呼应 */
#compliance .card .ico{background:var(--green-bg)}
#compliance .card h3{color:#047857}

/* expert */
.expert{display:grid;grid-template-columns:300px 1fr;gap:34px;align-items:center;
  background:#fff;border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.expert .photo{aspect-ratio:1;border-radius:18px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:54px;font-weight:800;
  position:relative;overflow:hidden}
.expert .photo img{width:100%;height:100%;object-fit:cover;display:block}
.expert h3{font-size:24px;margin-bottom:4px}
.expert .role{color:var(--blue);font-weight:700;margin-bottom:14px}
.expert ul{margin:10px 0 0 0;padding-left:18px;color:var(--ink-soft)}
.expert li{margin:6px 0}

/* feature (AI value) */
.feat{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}
.feat.rev{direction:rtl}
.feat.rev>*{direction:ltr}
.feat .visual{background:linear-gradient(160deg,#EEF2FF,#F5F3FF);border-radius:var(--radius);
  padding:30px;min-height:280px;display:flex;flex-direction:column;justify-content:center;gap:14px}
.feat h3{font-size:21px;margin-bottom:10px}
.feat p{color:var(--slate)}

/* timeline */
.timeline{position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:3px;background:var(--grad)}
.tl-item{position:relative;margin-bottom:24px}
.tl-item::before{content:"";position:absolute;left:-26px;top:4px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:4px solid var(--purple)}
.tl-item h4{font-size:16px}
.tl-item .meta{font-size:13px;color:var(--slate)}

/* footer */
.footer{background:var(--indigo-1);color:rgba(255,255,255,.8);padding:54px 0 30px;margin-top:40px}
.footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer a{display:block;color:rgba(255,255,255,.7);font-size:14px;padding:5px 0}
.footer a:hover{color:#fff}
.footer .bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:20px;
  font-size:13px;color:rgba(255,255,255,.55);text-align:center}
.footer .logo{color:#fff;margin-bottom:12px}

/* modal */
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.6);backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal-mask.open{display:flex}
.modal{background:#fff;border-radius:20px;max-width:760px;width:100%;max-height:90vh;overflow:auto;
  box-shadow:var(--shadow-lg)}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;
  border-bottom:1px solid var(--slate-100);position:sticky;top:0;background:#fff;z-index:2}
.modal-head h3{font-size:18px}
.modal-close{background:none;border:none;font-size:26px;cursor:pointer;color:var(--slate);line-height:1}
.modal-body{padding:22px 24px}

/* course grid */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.fbtn{padding:9px 16px;border-radius:99px;border:1.5px solid var(--slate-200);background:#fff;
  font-weight:600;font-size:14px;cursor:pointer;color:var(--ink-soft);transition:.18s}
.fbtn:hover{border-color:var(--blue);color:var(--blue)}
.fbtn.active{background:var(--grad);color:#fff;border-color:transparent}
.courses{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.ccard{background:#fff;border:1px solid var(--slate-100);border-radius:16px;padding:18px;
  display:flex;flex-direction:column;gap:10px;transition:.2s}
.ccard:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.ccard .top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.ccard h4{font-size:16.5px;line-height:1.4}
.ccard .kp{font-size:13px;color:var(--slate)}
.ccard .acts{display:flex;gap:8px;margin-top:auto}
.ccard .acts .btn{flex:1;justify-content:center;padding:9px 0;font-size:13.5px}
.mini{font-size:12px;padding:7px 12px;border-radius:9px}

/* player */
.player{background:#0f172a;border-radius:14px;overflow:hidden;position:relative;aspect-ratio:16/9}
.player .stage{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;
  justify-content:center;text-align:center;padding:30px;color:#fff;
  background:radial-gradient(600px 300px at 50% 20%,rgba(139,92,246,.5),transparent),#0f172a}
.player .scene-title{font-size:24px;font-weight:800;margin-bottom:10px}
.player .scene-body{font-size:15px;color:rgba(255,255,255,.82);max-width:520px}
.player .pill{margin-top:16px;font-size:12px;background:rgba(255,255,255,.14);padding:6px 14px;border-radius:99px}
.player-bar{position:absolute;left:0;right:0;bottom:0;background:rgba(0,0,0,.35);padding:12px 16px;
  display:flex;align-items:center;gap:12px}
.player-bar .pp{width:38px;height:38px;border-radius:50%;background:var(--grad);border:none;color:#fff;
  font-size:16px;cursor:pointer;flex:none}
.player-bar .track{flex:1;height:6px;background:rgba(255,255,255,.25);border-radius:99px;overflow:hidden}
.player-bar .fill{height:100%;width:0;background:var(--grad);transition:width .2s}
.player-bar .t{font-size:12px;color:#fff;min-width:74px;text-align:right}
.badge-sample{position:absolute;top:12px;left:12px;background:var(--orange);color:#fff;font-size:11px;
  font-weight:700;padding:4px 10px;border-radius:8px;z-index:3}
.badge-soon{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.16);color:#fff;font-size:11px;
  font-weight:700;padding:4px 10px;border-radius:8px;z-index:3;backdrop-filter:blur(4px)}

/* map */
.map-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.map-tabs .fbtn .dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:7px}
#map{width:100%;height:540px;border-radius:var(--radius);overflow:hidden;background:#EEF2FF;
  border:1px solid var(--slate-200)}
.batch-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:24px}
.bcard{border-radius:16px;padding:20px;color:#fff;position:relative;overflow:hidden}
.bcard h4{font-size:16px;margin-bottom:6px}
.bcard .cnt{font-size:34px;font-weight:800;line-height:1}
.bcard .desc{font-size:13px;opacity:.92;margin-top:8px}

/* interact */
.widget{background:#fff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);
  border:1px solid var(--slate-100);margin-bottom:24px}
.widget h3{font-size:19px;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.widget .desc{color:var(--slate);font-size:14px;margin-bottom:18px}
.streak{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.streak .num{font-size:40px;font-weight:800;background:var(--grad);-webkit-background-clip:text;
  background-clip:text;color:transparent}
.streak .lbl{color:var(--slate);font-size:14px}
textarea,input[type=text]{width:100%;border:1.5px solid var(--slate-200);border-radius:12px;
  padding:12px 14px;font-family:var(--font);font-size:14.5px;resize:vertical}
textarea:focus,input[type=text]:focus{outline:none;border-color:var(--blue)}
.emoji-row{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 14px}
.emoji{border:2px solid var(--slate-200);background:#fff;border-radius:12px;width:52px;height:52px;
  font-size:26px;cursor:pointer;transition:.15s}
.emoji:hover{border-color:var(--blue)}
.emoji.sel{border-color:var(--purple);background:var(--grad-soft)}
.list-item{background:var(--slate-50);border-radius:12px;padding:14px 16px;margin-top:10px;font-size:14px}
.list-item .when{font-size:12px;color:var(--slate);margin-bottom:4px}
.taskline{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--slate-100)}
.taskline:last-child{border-bottom:none}
.taskline .chk{width:22px;height:22px;border-radius:7px;border:2px solid var(--slate-200);
  cursor:pointer;flex:none;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:13px}
.taskline.done .chk{background:var(--green);border-color:var(--green)}
.taskline.done .txt{text-decoration:line-through;color:var(--slate)}
.empty{color:var(--slate);font-size:14px;padding:12px 0;text-align:center}

/* 延伸互动组件 */
.demo-tag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.5px;color:var(--purple);
  background:var(--grad-soft);padding:3px 9px;border-radius:99px;vertical-align:middle;margin-left:2px}
/* ① 提问力评分条 */
.q-scores{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.q-row{display:flex;align-items:center;gap:10px}
.q-name{width:58px;flex:none;font-size:13px;color:var(--slate);text-align:right}
.q-track{flex:1;height:10px;background:var(--slate-100);border-radius:99px;overflow:hidden}
.q-fill{display:block;height:100%;border-radius:99px;transition:width .5s ease}
.q-val{width:28px;flex:none;font-size:13px;font-weight:700;text-align:left;color:var(--ink-soft)}
.q-overall{margin-top:14px;font-size:14px;color:var(--slate)}
.q-overall b{font-size:20px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.q-fb{margin-top:10px;font-size:13.5px;color:var(--ink-soft);line-height:1.7}
.q-demo{margin-top:10px;font-size:13.5px;background:var(--slate-50);border-radius:12px;padding:12px 14px;line-height:1.6}
.q-demo b{color:var(--blue)}
/* ② 闯关 */
.quiz-prog{font-size:13px;font-weight:700;color:var(--blue);margin-bottom:8px;letter-spacing:.5px}
.quiz-q{font-size:17px;font-weight:700;margin-bottom:14px;line-height:1.5}
.quiz-opts{display:flex;flex-direction:column;gap:10px}
.qopt{text-align:left;background:#fff;border:1.5px solid var(--slate-200);border-radius:12px;
  padding:13px 15px;font-size:14.5px;cursor:pointer;font-family:var(--font);transition:.15s;color:var(--ink)}
.qopt:hover{border-color:var(--blue);background:var(--grad-soft);transform:translateX(2px)}
.quiz-head{font-size:18px;font-weight:800;margin:4px 0 10px}
.quiz-tend{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:6px}
.tend-pill{font-size:13px;font-weight:700;color:#fff;background:var(--grad);padding:6px 14px;border-radius:99px}
.quiz-sub{font-size:14px;color:var(--slate);margin:6px 0 12px}
.quiz-recs{display:flex;flex-direction:column;gap:10px}
.res-card{text-decoration:none;color:inherit}
a.res-card:hover{border-color:var(--blue);box-shadow:0 8px 22px rgba(99,102,241,.18);transform:translateY(-1px)}
.res-card .go{margin-left:auto;color:var(--blue);font-weight:700;font-size:13px;white-space:nowrap}
/* ③ 树洞 */
.help-card{margin-top:16px;border:1.5px solid #FCA5A5;background:#FEF2F2;border-radius:16px;padding:18px}
.help-head{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:800;color:#B91C1C;margin-bottom:8px}
.help-card p{font-size:14px;color:#7F1D1D;line-height:1.7;margin:0 0 10px}
.help-card .res-card{border-color:#FECACA;background:#fff}
.help-card .res-card .meta b{color:#B91C1C}
.help-foot{font-weight:700;margin-bottom:0 !important}
.echo-card{margin-top:16px;border:1.5px solid var(--slate-200);background:#fff;border-radius:16px;padding:18px}
.echo-head{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:800;color:var(--purple);margin-bottom:8px}
.echo-card p{font-size:14.5px;color:var(--ink-soft);line-height:1.75;margin:0 0 8px}
.echo-foot{font-size:12.5px !important;color:var(--slate) !important;margin-bottom:0 !important}

/* ===== 增强：决策者摘要 / 合作价值 / 产品实景 / 责任安全 / 证据 / 动效 ===== */
/* ① 60 秒决策者摘要（深色 band） */
.decision{background:linear-gradient(160deg,var(--indigo-1),var(--indigo-2));color:#fff;padding:50px 0}
.decision .eyebrow{background:rgba(255,255,255,.14);color:#fff}
.decision-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:22px 0 26px}
.dcell{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:18px}
.dcell .k{font-size:12px;letter-spacing:1px;color:rgba(255,255,255,.62);margin-bottom:8px;font-weight:800}
.dcell .v{font-size:14.5px;line-height:1.6;color:rgba(255,255,255,.92)}
.decision-cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
/* ② 合作价值 + 三方分工 */
.roles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:16px}
.role-card{background:#fff;border:1px solid var(--slate-200);border-radius:16px;padding:22px;position:relative;overflow:hidden}
.role-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--grad)}
.role-card .who{font-size:11.5px;font-weight:800;letter-spacing:1.5px;color:var(--purple);margin-bottom:7px}
.role-card h4{font-size:16.5px;margin-bottom:8px}
.role-card p{font-size:13.5px;color:var(--slate);line-height:1.72}
.role-card.owner{border-color:var(--blue);box-shadow:0 12px 30px rgba(75,123,255,.16)}
.role-card.owner .who{color:var(--blue)}
.division-note{display:flex;gap:12px;align-items:flex-start;background:var(--grad-soft);
  border:1px solid var(--slate-200);border-radius:14px;padding:16px 18px;margin-top:20px}
.division-note p{font-size:14px;color:var(--ink-soft);margin:0}
.division-note b{color:var(--blue)}
/* ③ 千问产品实景（手机 mockup） */
.product-wrap{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:center}
.phone{width:272px;max-width:100%;margin:0 auto;background:#0f172a;border-radius:36px;padding:13px;box-shadow:var(--shadow-lg)}
.phone .screen{background:#F8FAFC;border-radius:26px;overflow:hidden}
.phone .bar{background:#fff;padding:12px 15px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--slate-200)}
.phone .bar .dot{width:32px;height:32px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;flex:none}
.phone .bar b{font-size:13px;display:block;line-height:1.2}
.phone .bar small{color:var(--slate);font-size:10.5px}
.chat{padding:15px;display:flex;flex-direction:column;gap:10px;min-height:236px}
.bubble{max-width:84%;padding:10px 13px;border-radius:14px;font-size:12.5px;line-height:1.62}
.bubble.me{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:4px}
.bubble.ai{align-self:flex-start;background:#fff;border:1px solid var(--slate-200);color:var(--ink);border-bottom-left-radius:4px}
.bubble.ai b{color:var(--blue)}
.chat-foot{background:#fff;padding:10px 14px;border-top:1px solid var(--slate-200);font-size:10.5px;color:var(--slate);text-align:center}
.cap-list{display:flex;flex-direction:column;gap:12px}
.cap-item{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--slate-100);
  border-radius:13px;padding:15px 17px}
.cap-item .ico{width:40px;height:40px;border-radius:11px;background:var(--grad-soft);flex:none;
  display:flex;align-items:center;justify-content:center}
.cap-item b{font-size:15px;display:block;margin-bottom:2px}
.cap-item span{font-size:13px;color:var(--slate);line-height:1.6}
/* ④ 责任与安全 */
.safety-pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px}
.spillar{background:#fff;border:1px solid var(--slate-100);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.spillar .ico{width:44px;height:44px;border-radius:12px;background:var(--green-bg);display:flex;
  align-items:center;justify-content:center;margin-bottom:14px}
.spillar h3{font-size:16.5px;margin-bottom:7px}
.spillar p{font-size:13.5px;color:var(--slate);line-height:1.72}
.spillar .step{display:inline-block;font-size:11px;font-weight:800;letter-spacing:1px;color:var(--green);
  background:var(--green-bg);padding:3px 10px;border-radius:99px;margin-bottom:10px}
/* ⑤ 证据与影响力 */
.ev-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.ev-col{background:#fff;border:1px solid var(--slate-200);border-radius:16px;padding:24px}
.ev-col.real{border-top:5px solid var(--green)}
.ev-col.plan{border-top:5px solid var(--orange)}
.ev-col h3{font-size:17px;margin-bottom:4px}
.ev-col .tagline{font-size:12.5px;color:var(--slate);margin-bottom:14px}
.ev-col ul{margin:0;padding-left:19px}
.ev-col li{margin:9px 0;color:var(--ink-soft);font-size:14px;line-height:1.65}
.ev-col li b{color:var(--ink)}
.impact-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
.impact-cell{background:var(--grad-soft);border:1px solid var(--slate-200);border-radius:16px;padding:22px}
.impact-cell .n{font-size:34px;font-weight:800;line-height:1.1}
.impact-cell .n.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.impact-cell .l{color:var(--slate);font-size:13.5px;margin-top:6px}
/* ⑥ 滚动淡入（内容默认可见，仅入场播放一次动画——绝不隐藏内容） */
.reveal{opacity:1}
.reveal.in{animation:revealUp .65s cubic-bezier(.2,.7,.2,1) both}
@keyframes revealUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){.reveal.in{animation:none}}
/* ⑦ 下载/对接条：紧凑 chip，整块可点，minmax(0,1fr) 允许收缩防窄屏溢出 */
.dl-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:30px}
.dl-chip{display:flex;align-items:center;gap:11px;width:100%;padding:12px 14px;border-radius:14px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);cursor:pointer;
  color:#fff;text-align:left;font-family:var(--font);transition:.18s;min-width:0}
.dl-chip:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.dl-chip .di{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.15);flex:none;
  display:flex;align-items:center;justify-content:center;font-size:16px}
.dl-chip .dt{flex:1;min-width:0}
.dl-chip .dt b{display:block;font-size:13.5px;font-weight:700;line-height:1.35;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dl-chip .dt small{display:block;font-size:11px;color:rgba(255,255,255,.62);line-height:1.4;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dl-chip .go{flex:none;font-size:12px;font-weight:700;color:rgba(255,255,255,.85)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.res-card{min-width:0}
.res-card .meta{min-width:0}
.res-card .meta b,.res-card .meta span{word-break:break-word}

/* misc */
.center{text-align:center}
.sub-note{font-size:13px;color:var(--slate);margin-top:10px}
.divider{height:1px;background:var(--slate-200);margin:0}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.res-card{display:flex;align-items:center;gap:14px;padding:16px;border:1px solid var(--slate-200);
  border-radius:14px;background:#fff;margin-bottom:12px}
.res-card .ico{width:42px;height:42px;border-radius:11px;background:var(--grad-soft);flex:none;
  display:flex;align-items:center;justify-content:center}
.res-card .meta{flex:1}
.res-card .meta b{font-size:15px;display:block}
.res-card .meta span{font-size:13px;color:var(--slate);display:block;margin-top:2px}

/* responsive */
@media(max-width:920px){
  .hero-grid,.expert,.feat,.feat.rev{grid-template-columns:1fr}
  .feat.rev{direction:ltr}
  .g3,.g4,.g2{grid-template-columns:1fr 1fr}
  .courses{grid-template-columns:1fr 1fr}
  .batch-cards{grid-template-columns:1fr 1fr}
  .footer .wrap{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .nav-links{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;
    padding:14px 24px;border-bottom:1px solid var(--slate-200);box-shadow:var(--shadow)}
  .nav-links.show{display:flex}
  .nav-toggle{display:block}
  .hero h1{font-size:34px}
  .g3,.g4,.g2,.courses,.batch-cards{grid-template-columns:1fr}
  .section{padding:60px 0}
}
@media(max-width:920px){
  .decision-grid{grid-template-columns:1fr 1fr}
  .product-wrap{grid-template-columns:1fr}
  .ev-grid{grid-template-columns:1fr}
  .safety-pillars{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .decision-grid{grid-template-columns:1fr}
  .roles{grid-template-columns:1fr}
  .safety-pillars{grid-template-columns:1fr}
  .impact-row{grid-template-columns:1fr}
  .dl-strip{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:26px}
}

/* ============================================================
   进入前「使用须知 / 免责声明」闸门
   动效：暗色幕布中心开一个圆形孔，孔径由 0 扩散至 130vw，
        页面即从一个小圆点向外展开。
   ============================================================ */
@property --gate-hole{syntax:'<length-percentage>';initial-value:0px;inherits:false}

/* 防止闸门挂载前闪现首页内容 */
html.gating,html.gating body{overflow:hidden}
html.gating body>:not(#gate){visibility:hidden}

.gate{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;
  padding:24px;overflow:hidden}
.gate-bg{position:absolute;inset:0;
  background:
    radial-gradient(1100px 620px at 78% -10%,rgba(139,92,246,.55),transparent 62%),
    radial-gradient(900px 560px at 6% 110%,rgba(75,123,255,.42),transparent 60%),
    linear-gradient(160deg,#1E1B4B,#312E81);
  -webkit-mask-image:radial-gradient(circle at 50% 50%,transparent var(--gate-hole),#000 calc(var(--gate-hole) + 72px));
  mask-image:radial-gradient(circle at 50% 50%,transparent var(--gate-hole),#000 calc(var(--gate-hole) + 72px));
  transition:--gate-hole .62s cubic-bezier(.22,.8,.2,1);
  animation:gateBgIn .38s ease backwards}
.gate.leaving .gate-bg{--gate-hole:130vw}
@keyframes gateBgIn{from{opacity:0}to{opacity:1}}

.gate-card{position:relative;z-index:2;width:100%;max-width:790px;max-height:88vh;
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border-radius:22px;box-shadow:0 40px 90px rgba(8,6,40,.5);
  animation:gateCardIn .5s cubic-bezier(.2,.7,.2,1) backwards;
  transition:opacity .16s ease,transform .16s ease}
@keyframes gateCardIn{from{opacity:0;transform:translateY(16px) scale(.985)}to{opacity:1;transform:none}}
.gate.panel-out .gate-card{opacity:0;transform:scale(.97)}

.gate-head{flex:none;padding:24px 30px 0}
.gate-eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:800;
  letter-spacing:1.6px;color:var(--blue);background:var(--grad-soft);padding:5px 12px;border-radius:99px}
.gate-head h2{font-size:23px;font-weight:800;margin:13px 0 5px;letter-spacing:.6px}
.gate-head p{font-size:13.5px;color:var(--slate)}

.gate-body{flex:1;min-height:0;overflow:auto;padding:16px 30px 6px;
  font-size:13.7px;line-height:1.78;color:var(--ink-soft);scrollbar-width:thin}
.gate-body h3{font-size:14px;font-weight:800;color:var(--ink);margin:15px 0 3px}
.gate-body h3:first-child{margin-top:2px}
.gate-body p{margin:0}
.gate-body b{color:var(--ink);font-weight:800}

.gate-foot{flex:none;position:relative;padding:15px 30px 20px;border-top:1px solid var(--slate-100);background:#fff}
.gate-foot::before{content:"";position:absolute;left:0;right:0;top:-26px;height:26px;pointer-events:none;
  background:linear-gradient(to top,#fff,rgba(255,255,255,0))}
.gate-check{display:flex;align-items:flex-start;gap:10px;cursor:pointer;
  font-size:13.4px;line-height:1.62;color:var(--ink-soft);margin-bottom:13px}
.gate-check input{flex:none;width:18px;height:18px;margin-top:2px;accent-color:#4B7BFF;cursor:pointer}
.gate-check b{color:var(--ink)}
.gate-actions{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.gate-note{font-size:12px;color:var(--slate)}
.gate-btn{padding:11px 26px;font-size:14.5px}
.gate-btn:disabled{background:#E2E8F0;color:#94A3B8;cursor:not-allowed;box-shadow:none;transform:none;filter:none;opacity:1}

@media(max-width:600px){
  .gate{padding:12px}
  .gate-card{max-height:93vh;border-radius:18px}
  .gate-head{padding:19px 20px 0}
  .gate-head h2{font-size:20px}
  .gate-body{padding:13px 20px 4px;font-size:13.3px}
  .gate-foot{padding:13px 20px 16px}
  .gate-actions{flex-direction:column-reverse;align-items:stretch}
  .gate-btn{width:100%;justify-content:center}
  .gate-note{text-align:center}
}
@media(prefers-reduced-motion:reduce){
  .gate-bg,.gate-card{animation:none;transition:none}
}

/* ===== 手机端页脚修正 =====
   窄屏下两列只剩约 150px，会挤坏 logo / 简介 / 出品 logo。
   改为：品牌区独占整行，链接区保持两列，简介与 logo 拥有整行宽度。 */
@media(max-width:680px){
  .footer{padding:42px 0 24px}
  .footer .wrap{grid-template-columns:1fr 1fr;gap:26px 20px}
  .footer .wrap>div:first-child{grid-column:1 / -1}
  .footer .wrap>div:first-child>p{max-width:none}
  .footer-credit{margin-bottom:12px}
  .footer .bottom{margin-top:26px;padding-top:18px;line-height:1.7}
}
@media(max-width:380px){
  .footer .wrap{grid-template-columns:1fr}
}

/* ============================================================
   家校共育（family.html）与家长课（parents.html）
   ============================================================ */
/* 回端码 525 入口 */
.code-chip{display:inline-flex;align-items:center;justify-content:center;min-width:96px;
  background:var(--grad);color:#fff;font-size:30px;font-weight:800;letter-spacing:4px;
  border-radius:14px;padding:12px 18px;box-shadow:0 10px 24px rgba(99,102,241,.3)}
.code-entry{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.code-entry input{width:150px;padding:12px 16px;border-radius:12px;border:1.5px solid rgba(255,255,255,.45);
  background:rgba(255,255,255,.14);color:#fff;font-size:16px;font-weight:700;letter-spacing:6px;
  text-align:center;font-family:var(--font)}
.code-entry input::placeholder{color:rgba(255,255,255,.55);letter-spacing:2px;font-weight:400}
/* 快速跳转锚点条 */
.jump{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 26px}
.jump a{font-size:13px;font-weight:700;padding:8px 14px;border-radius:99px;background:#fff;
  border:1.5px solid var(--slate-200);color:var(--ink-soft);transition:.18s}
.jump a:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
/* 招牌排练：对话气泡与选项 */
.talk{display:flex;flex-direction:column;gap:12px;margin:16px 0}
.bubble{max-width:86%;padding:13px 17px;border-radius:16px;font-size:14.5px;line-height:1.7}
.bubble.you{align-self:flex-end;background:var(--grad);color:#fff;border-bottom-right-radius:5px}
.bubble.kid{align-self:flex-start;background:#fff;border:1.5px solid var(--slate-200);
  border-bottom-left-radius:5px}
.bubble.coach{align-self:center;max-width:94%;background:var(--green-bg);border:1.5px solid var(--green-bd);
  font-size:13.5px;color:#065F46}
.bubble .who{display:block;font-size:11.5px;font-weight:800;letter-spacing:1px;opacity:.75;margin-bottom:4px}
.pick-opts{display:flex;flex-direction:column;gap:10px;margin:14px 0}
.opt-btn{text-align:left;background:#fff;border:1.5px solid var(--slate-200);border-radius:13px;
  padding:13px 17px;font-size:14.5px;line-height:1.65;cursor:pointer;transition:.18s;
  color:var(--ink);font-family:var(--font)}
.opt-btn:hover{border-color:var(--blue);background:var(--grad-soft);transform:translateX(3px)}
.opt-btn.dim{opacity:.55}
.snippet-card{background:linear-gradient(160deg,#EEF2FF,#F5F3FF);border:1.5px solid var(--blue);
  border-radius:16px;padding:20px 22px;margin-top:14px}
.snippet-card h4{font-size:17px;margin-bottom:10px}
.snippet-card ol{margin:0;padding-left:20px;color:var(--ink-soft);font-size:14px;line-height:1.9}
/* 抽卡 */
.draw-card{background:linear-gradient(160deg,var(--indigo-1),var(--indigo-2));color:#fff;
  border-radius:18px;padding:28px 24px;min-height:150px;display:flex;flex-direction:column;
  justify-content:center;gap:10px;animation:cardIn .32s ease}
@keyframes cardIn{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:none}}
.draw-card .dir{font-size:12px;font-weight:800;letter-spacing:2px;color:#FDBA74}
.draw-card .qtext{font-size:19px;font-weight:800;line-height:1.6}
/* 7 天挑战 */
.day-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;margin:14px 0}
.day{border:1.5px solid var(--slate-200);background:#fff;border-radius:12px;padding:12px 8px;
  text-align:center;cursor:pointer;transition:.18s;font-family:var(--font)}
.day:hover{border-color:var(--blue)}
.day.done{background:var(--green);border-color:var(--green);color:#fff}
.day .dn{display:block;font-size:11px;font-weight:800;letter-spacing:1px;opacity:.7}
.day .dt{display:block;font-size:12px;line-height:1.5;margin-top:5px}
.day .dc{display:block;font-size:18px;margin-top:4px;font-weight:800}
/* 信件双栏 / 输入区 */
.letter-cols{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.family-ta{width:100%;font-family:var(--font);font-size:14px;line-height:1.75;color:var(--ink);
  border:1.5px solid var(--slate-200);border-radius:12px;padding:13px 15px;background:#fff;
  resize:vertical;min-height:120px}
.family-in{width:100%;padding:11px 14px;border:1.5px solid var(--slate-200);border-radius:11px;
  font-size:14px;font-family:var(--font);background:#fff}
.field-row{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
.field-row .family-in{flex:1 1 140px;width:auto}
/* 公约条款 */
.clause{display:flex;align-items:flex-start;gap:10px;padding:11px 14px;border:1.5px solid var(--slate-200);
  border-radius:12px;cursor:pointer;font-size:14px;line-height:1.65;background:#fff;transition:.16s}
.clause:hover{border-color:var(--blue)}
.clause.on{border-color:var(--purple);background:var(--grad-soft)}
.clause input{margin-top:3px;accent-color:#4B7BFF;width:17px;height:17px;flex:none}
.clause-list{display:flex;flex-direction:column;gap:9px;margin:12px 0}
.pact-card{background:#fff;border:2px solid var(--purple);border-radius:18px;padding:24px 26px;margin-top:14px}
.pact-card h4{font-size:19px;text-align:center;letter-spacing:2px;margin-bottom:14px}
.pact-card ol{margin:0;padding-left:22px;font-size:14.5px;line-height:2.1;color:var(--ink-soft)}
.pact-card .signs{margin-top:18px;padding-top:14px;border-top:1.5px dashed var(--slate-200);
  display:flex;gap:20px;flex-wrap:wrap;font-size:13.5px;color:var(--slate)}
/* 千问回复卡 */
.qwen-reply{background:var(--grad-soft);border:1.5px solid var(--purple);border-radius:16px;
  padding:18px 20px;margin-top:14px}
.qwen-reply .qh{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--purple);margin-bottom:8px}
.qwen-reply p{font-size:14.5px;line-height:1.8;color:var(--ink-soft);margin:0 0 6px}
/* 情绪天气 */
.weather-row{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 4px}
.weather{border:1.5px solid var(--slate-200);background:#fff;border-radius:11px;padding:8px 13px;
  cursor:pointer;font-size:13.5px;transition:.16s;font-family:var(--font)}
.weather:hover{border-color:var(--blue)}
.weather.sel{border-color:var(--purple);background:var(--grad-soft);font-weight:700}
.weather b{margin-right:5px}
/* 家长课手风琴 */
.acc{display:flex;flex-direction:column;gap:12px}
.acc-item{background:#fff;border:1.5px solid var(--slate-200);border-radius:15px;overflow:hidden}
.acc-head{width:100%;display:flex;align-items:center;gap:12px;padding:17px 20px;background:none;
  border:none;cursor:pointer;text-align:left;font-family:var(--font);font-size:16px;font-weight:700;
  color:var(--ink)}
.acc-head:hover{background:var(--slate-50)}
.acc-head .arw{margin-left:auto;flex:none;transition:transform .22s;color:var(--blue);font-weight:800}
.acc-item.open .acc-head .arw{transform:rotate(90deg)}
.acc-body{display:none;padding:0 20px 20px;font-size:14px;line-height:1.85;color:var(--ink-soft)}
.acc-item.open .acc-body{display:block}
.acc-body h5{font-size:13px;letter-spacing:1.5px;color:var(--blue);margin:14px 0 4px;font-weight:800}
.acc-body .sayline{background:var(--grad-soft);border-radius:11px;padding:12px 16px;
  font-size:15px;font-weight:700;color:var(--ink);margin:10px 0 4px}
/* 三步链（配对示例） */
.ichain{display:flex;flex-direction:column;gap:6px}
.cstep{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--ink-soft);
  background:var(--slate-50);border-radius:10px;padding:8px 11px;line-height:1.6}
.cstep .cnum{flex:none;width:18px;height:18px;border-radius:50%;background:var(--grad);color:#fff;
  font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:2px}
.pair-card{background:#fff;border:1.5px solid var(--slate-200);border-radius:16px;padding:20px 22px}
.pair-card h4{font-size:16.5px;margin:0 0 10px}
.pair-card .go-row{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.pair-card .go-row a{font-size:12.5px;font-weight:700;padding:7px 13px;border-radius:9px;
  background:var(--grad-soft);color:var(--blue)}
.pair-card .go-row a:hover{background:var(--grad);color:#fff}
@media(max-width:920px){
  .decision-grid.two{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .nav-links{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;
    padding:14px 24px;border-bottom:1px solid var(--slate-200);box-shadow:var(--shadow)}
  .nav-links.show{display:flex}
  .nav-toggle{display:block}
}
@media(max-width:680px){
  .decision-grid.two{grid-template-columns:1fr}
  .letter-cols{grid-template-columns:1fr}
  .day-grid{grid-template-columns:repeat(4,1fr)}
  .bubble{max-width:96%}
}

/* ============================================================
   华怡心辰案例页（cases.html）
   ============================================================ */
/* 页脚「技术支持」内联链接（覆盖 .footer a 的 display:block） */
.footer .bottom a{display:inline;padding:0;color:rgba(255,255,255,.82);
  text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(255,255,255,.38)}
.footer .bottom a:hover{color:#fff;text-decoration-color:rgba(255,255,255,.85)}
/* 汇总对照表：窄屏横向滚动，不破版 */
.cmp-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--slate-200);
  border-radius:16px;background:#fff;box-shadow:var(--shadow)}
.cmp{width:100%;border-collapse:collapse;min-width:680px;font-size:13.5px}
.cmp th,.cmp td{padding:13px 15px;text-align:left;vertical-align:top;line-height:1.7;
  border-bottom:1px solid var(--slate-100)}
.cmp thead th{background:var(--grad-soft);color:var(--ink);font-weight:800;font-size:13px;
  letter-spacing:.3px;white-space:nowrap}
.cmp tbody th{background:var(--slate-50);color:var(--ink-soft);font-weight:700;white-space:nowrap}
.cmp td{color:var(--ink-soft)}
.cmp tr:last-child th,.cmp tr:last-child td{border-bottom:none}
/* 案例头部：KPI 数字沿用 .kpi，多行数据用 modstrip */
.case-head{margin-bottom:22px}
.case-head .section-title{margin-bottom:8px}
.case-note{font-size:13px;color:var(--slate);margin:-8px 0 22px;line-height:1.7}