/* TridLearn V0.7 — warm continuity inner system.
   Homepage A remains unchanged. Inner pages borrow its warm paper base,
   crisp black typography and restrained violet accent without copying the hero. */
:root{
  --inner-bg:#f8f5f0;
  --inner-surface:#ffffff;
  --inner-paper:#fbf8f3;
  --inner-paper-2:#f4eee6;
  --inner-ink:#171923;
  --inner-muted:#6c6b70;
  --inner-line:#e7e0d8;
  --inner-line-strong:#d8d0c6;
  --inner-purple:#6b5ce7;
  --inner-purple-deep:#5547ce;
  --inner-purple-soft:#f0edff;
  --inner-warm:#efe3d5;
  --inner-warm-2:#f6ede2;
  --inner-navy:#171923;
}
body.inner-page{background:var(--inner-bg);color:var(--inner-ink);min-height:100vh;display:flex;flex-direction:column}
body.inner-page > main{flex:1 0 auto;width:100%}
body.inner-page > .footer{margin-top:auto;flex:0 0 auto;width:100%}
.inner-page .site-header{background:#fff;border-bottom:1px solid #eceef2;box-shadow:none}
.inner-page .nav-links a:hover{background:#f5f6f8;color:#171923}
.inner-page .nav-links a.active{background:#f1efff;color:#171923}
.inner-page .eyebrow{color:var(--inner-purple)}
.inner-page .footer{background:#171923}

/* shared masthead — warm, bright, continuous with homepage A */
.inner-mast{padding:62px 0 34px;background:linear-gradient(180deg,#fbf8f3 0%,#fff 100%)}
.inner-mast .mast-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:50px;align-items:end}
.inner-mast h1{font-size:clamp(38px,4.4vw,58px);line-height:1.02;letter-spacing:-.048em;margin:0 0 14px;max-width:760px;color:#171923}
.inner-mast p{font-size:16px;line-height:1.75;color:var(--inner-muted);max-width:720px;margin:0}
.mast-proof{display:flex;gap:0;align-items:end;justify-content:flex-end}
.proof-chip{min-width:140px;padding:5px 22px 5px 0;background:transparent;border:0}
.proof-chip+.proof-chip{border-left:1px solid var(--inner-line);padding-left:22px}
.proof-chip strong{display:block;font-size:26px;letter-spacing:-.045em;line-height:1.08;color:#191b23}
.proof-chip span{display:block;margin-top:6px;color:#858079;font-size:11px}

/* courses — bright field, visual weight stays on future cover images */
.catalog-shell{padding-bottom:86px;background:#fff}
.catalog-tools{display:flex;align-items:center;gap:9px;padding:18px 0 28px;border-top:1px solid var(--inner-line)}
.filter{border:1px solid var(--inner-line-strong);background:#fff;color:#5d5954;border-radius:999px;padding:9px 14px;font-weight:760;box-shadow:none}
.filter.active,.filter:hover{background:#171923;color:#fff;border-color:#171923}
.search{margin-left:auto;min-width:250px;border:1px solid var(--inner-line-strong);background:#fff;border-radius:11px;padding:10px 13px;outline:none;box-shadow:none}
.course-all{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:36px 22px;padding:0}
.course-card{background:transparent;border:0;border-radius:0;box-shadow:none;overflow:visible;display:block}
.course-card:hover{transform:none;box-shadow:none;border:0}
.course-card .thumb{height:auto;aspect-ratio:16/10;border-radius:15px;box-shadow:0 12px 28px rgba(39,31,24,.12);transition:transform .2s ease,box-shadow .2s ease;padding:18px}
.course-card:hover .thumb{transform:translateY(-4px);box-shadow:0 18px 38px rgba(39,31,24,.17)}
.course-card .course-body{padding:14px 2px 0}
.course-card .course-meta{font-size:11px;margin-bottom:6px;color:#6758d7}
.course-card .course-title{font-size:16px;line-height:1.35;margin-bottom:5px;color:#171923}
.course-card .course-desc{font-size:12px;min-height:0;color:#77726b;line-height:1.55}
.course-card .course-foot{margin-top:10px;font-size:11px;color:#77726b}
.course-card .pill{background:#f1edff;color:#5b4fca}

/* detail */
.detail-page{padding-bottom:88px;background:#fff}
.detail-hero{padding:50px 0 46px;border-bottom:1px solid var(--inner-line);background:linear-gradient(180deg,#fbf8f3,#fff)}
.detail-hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:56px;align-items:center}
.detail-visual{aspect-ratio:16/10;border-radius:19px;background:linear-gradient(145deg,#253866,#5e6deb 55%,#9b7cff);position:relative;overflow:hidden;box-shadow:0 22px 52px rgba(40,35,30,.16);color:#fff;padding:28px;display:flex;align-items:flex-end;font-size:34px;font-weight:900;letter-spacing:.03em;line-height:1.02}
.detail-visual:before{content:"";position:absolute;width:230px;height:230px;border-radius:58px;right:-35px;top:-44px;background:rgba(255,255,255,.15);transform:rotate(28deg)}
.detail-visual:after{content:"";position:absolute;width:118px;height:118px;border:1px solid rgba(255,255,255,.48);border-radius:34px;right:88px;top:66px;transform:rotate(43deg)}
.detail-summary h1{font-size:clamp(34px,4vw,52px);line-height:1.05;letter-spacing:-.048em;margin:8px 0 16px;color:#171923}
.detail-summary .summary-lead{font-size:16px;line-height:1.75;color:var(--inner-muted);margin:0 0 22px}
.detail-meta{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 24px}
.detail-meta span{font-size:11px;border:1px solid var(--inner-line);background:#fbf8f3;border-radius:999px;padding:6px 9px;color:#625f5a}
.detail-action{border-top:1px solid var(--inner-line);padding-top:22px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.detail-action strong{font-size:14px}.detail-action small{display:block;color:var(--inner-muted);margin-top:3px}
.detail-content{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding-top:52px}
.detail-copy h2{font-size:26px;letter-spacing:-.03em;margin:0 0 16px}.detail-copy h2+*{margin-top:0}
.detail-copy ul{padding-left:20px;color:#57524d;line-height:1.9}
.lesson-list{background:transparent;border:0;border-top:1px solid var(--inner-line);border-radius:0}
.lesson{padding:18px 0;border-bottom:1px solid var(--inner-line)}
.detail-aside{position:sticky;top:102px;align-self:start;border-left:1px solid var(--inner-line);padding-left:26px}
.detail-aside h3{font-size:16px;margin:0 0 8px}.detail-aside p{font-size:13px;color:var(--inner-muted);line-height:1.65}.detail-aside .btn{width:100%;margin-top:10px}

/* updates */
.updates-page{padding-bottom:84px;background:#fff}
.changelog-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:56px;border-top:1px solid var(--inner-line);padding-top:10px}
.changelog{background:transparent;border:0;border-radius:0}
.change-row{display:grid;grid-template-columns:110px minmax(0,1fr) auto;gap:24px;align-items:start;padding:24px 0;border-bottom:1px solid var(--inner-line)}
.change-date{font-size:12px;color:#8b847c;font-weight:800;padding-top:2px}.change-title{font-size:17px;font-weight:820;line-height:1.4}.change-desc{font-size:12px;color:#77716a;margin-top:6px}.change-type{font-size:10px;font-weight:800;padding:5px 8px;border-radius:999px;background:#f2ece5;color:#665f58}
.now-making{border-left:1px solid var(--inner-line);padding-left:27px}.now-making h3{font-size:18px;margin:5px 0 18px}.making-row{padding:14px 0;border-bottom:1px solid var(--inner-line)}.making-row strong{display:block;font-size:13px}.making-row span{font-size:11px;color:#77716a}.making-row .status{margin-top:7px;background:#f0edff;color:#594dc7}
.plan-band{margin-top:58px;padding-top:28px;border-top:1px solid var(--inner-line)}
.plan-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.plan-col h3{font-size:18px;margin:0 0 8px}.plan-col p{color:var(--inner-muted);margin:0;line-height:1.7}

/* MIGRATION — rebuilt: one clear message, visible value, warm continuity */
.migration-page{padding-bottom:92px;background:#fff}
.migration-intro{padding:58px 0 42px;background:linear-gradient(180deg,#f7f3ed 0%,#fcfaf7 74%,#fff 100%);border-bottom:1px solid var(--inner-line)}
.migration-heading{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(380px,.92fr);gap:64px;align-items:center}
.migration-title .eyebrow{margin-bottom:14px}
.migration-title h1{font-size:clamp(42px,4.2vw,58px);line-height:1.02;letter-spacing:-.048em;margin:0 0 16px;color:#171923}
.migration-title .migration-subtitle{font-size:21px;font-weight:780;line-height:1.45;letter-spacing:-.018em;margin:0 0 13px;color:#2b2b31;max-width:690px}
.migration-title>p{font-size:15px;line-height:1.8;color:#6c6965;max-width:680px;margin:0}
.migration-gain-card{background:#fff;border:1px solid #ded6cd;border-radius:20px;padding:25px 26px;box-shadow:0 16px 40px rgba(65,49,34,.08);position:relative;overflow:hidden}
.migration-gain-card:before{content:"";position:absolute;width:150px;height:150px;border-radius:50%;right:-72px;top:-82px;background:#efe9ff}
.migration-gain-card h2{position:relative;font-size:17px;letter-spacing:-.02em;margin:0 0 14px}
.migration-gain{display:grid;grid-template-columns:1fr;gap:0;position:relative}
.gain-item{display:grid;grid-template-columns:34px 1fr;gap:13px;align-items:start;padding:14px 0;border-top:1px solid #ece5dd}
.gain-item:first-child{border-top:0;padding-top:2px}
.gain-num{width:29px;height:29px;border-radius:9px;display:grid;place-items:center;background:#f0edff;color:#5547ce;font-size:11px;font-weight:900}
.gain-item strong{display:block;font-size:14px;margin-bottom:3px;color:#202027}.gain-item span{display:block;color:#746e68;font-size:12px;line-height:1.55}

.migration-rules-section{padding:42px 0 8px;background:#fff}
.rule-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:18px}
.rule-heading h2{font-size:26px;margin:0;letter-spacing:-.032em}.rule-heading p{margin:0;color:#837c74;font-size:12px}
.rule-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0}
.rule-item{border:1px solid #e4ddd5;background:#fbf8f3;border-radius:15px;padding:20px 19px 18px;box-shadow:none}
.rule-item span{display:block;font-size:11px;color:#77716a;line-height:1.5}.rule-item strong{display:block;font-size:30px;letter-spacing:-.045em;margin-top:9px;color:#181a21}
.rule-item.direct{background:#f0edff;border-color:#d7d0ff}.rule-item.direct strong{color:#5547ce}.rule-item.direct span{color:#6f679a}

.migration-calc-section{padding:52px 0 12px}
.calc-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:26px;align-items:end;margin-bottom:20px}.calc-head h2{font-size:30px;margin:0 0 7px;letter-spacing:-.036em}.calc-head p{margin:0;color:#77716a;font-size:13px;max-width:720px}.calc-head .calc-hint{font-size:11px;color:#8c857d;padding-bottom:4px}
.migration-work{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(320px,.58fr);gap:24px;align-items:stretch}
.plan-area{background:#fbf8f3;border:1px solid #e4ddd5;border-radius:18px;padding:25px}
.plan-area h3{font-size:16px;margin:0 0 4px}.plan-area>p{font-size:12px;color:#7b746d;margin:0 0 18px}
.plan-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.plan-option{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid #ddd5cc;border-radius:11px;padding:13px 14px;font-weight:720;font-size:13px;transition:.16s}
.plan-option:hover{border-color:#bbb0a5}.plan-option:has(input:checked){background:#f0edff;border-color:#aea4f3;color:#40378c}.plan-option input{accent-color:#6c5be6;width:16px;height:16px}
.special-case{margin-top:16px;font-size:12px;color:#6f6962;border-top:1px solid #e5ddd5;padding-top:14px}.special-case summary{cursor:pointer;font-weight:800;color:#393631}
.migration-result{background:#f7f3ed;color:#171923;border:1px solid #dcd2c6;border-radius:18px;padding:28px;display:flex;flex-direction:column;justify-content:space-between;min-height:330px;box-shadow:0 14px 35px rgba(61,45,31,.08);position:relative;overflow:hidden}
.migration-result:after{content:"";position:absolute;width:125px;height:125px;border-radius:50%;right:-45px;bottom:-55px;background:#e8e1ff;opacity:.9}
.migration-result .label{font-size:11px;text-transform:uppercase;letter-spacing:.09em;color:#756e66;font-weight:900}.migration-result .result-price{font-size:54px;color:#2b2831;letter-spacing:-.055em;line-height:1.02;margin-top:20px;position:relative;z-index:1}.migration-result .result-note{font-size:12px;color:#746e68;line-height:1.6;margin-top:10px;max-width:270px;position:relative;z-index:1}.migration-result .btn{width:100%;margin-top:24px;position:relative;z-index:1}.migration-result .special{font-size:10px;color:#817a73;line-height:1.5;margin-top:13px;position:relative;z-index:1}

.process-wrap{margin-top:56px;padding-top:30px;border-top:1px solid #e8e0d7}.process-wrap h2{font-size:23px;margin:0 0 18px;letter-spacing:-.025em}
.process-line{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;border:0;margin:0}
.process-step{padding:18px 0 0;border:0;border-top:2px solid #ded6cd}.process-step b{display:block;color:#665bd0;font-size:11px;margin-bottom:14px}.process-step strong{display:block;font-size:14px}.process-step span{display:block;font-size:11px;color:#77716a;line-height:1.55;margin-top:6px}
.faq-flat{margin-top:48px;border-top:1px solid #e8e0d7}.faq-flat details{background:transparent;border:0;border-bottom:1px solid #e8e0d7;border-radius:0;padding:0}.faq-flat summary{padding:18px 0;font-weight:800;cursor:pointer}.faq-flat p{margin:0 0 18px;color:#706a63;font-size:13px}

/* account */
.account-page{padding-bottom:84px;background:#fff}.account-page .inner-mast{padding-bottom:30px}.account-status{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:24px;border-top:1px solid var(--inner-line);padding-top:28px}.account-main{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.account-block{background:#fff;border:1px solid #e5ddd4;border-radius:15px;padding:22px;box-shadow:none}.account-block h2{font-size:18px;margin:8px 0}.account-block p{font-size:12px;color:#747069;line-height:1.65}.account-aside{background:#f7f3ed;color:#1a1b22;border:1px solid #e2d9cf;border-radius:16px;padding:24px;align-self:stretch}.account-aside p{color:#716b65;font-size:12px}.account-aside .btn{width:100%;margin-top:14px}.status-badge{background:#f1ece6;color:#65605a}.redeem{display:flex;gap:8px}.redeem input{min-width:0;flex:1;background:#fff;border:1px solid var(--inner-line-strong);border-radius:9px;padding:10px 11px}

/* auth */
.auth-page{min-height:calc(100vh - 74px);display:grid;place-items:center;background:linear-gradient(180deg,#f7f3ed,#fff);padding:52px 20px}.auth-card{width:min(440px,100%);background:#fff;border:1px solid #e4dbd1;border-radius:17px;padding:30px;box-shadow:0 20px 50px rgba(61,45,31,.08)}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;background:#f3eee8;border-radius:9px;padding:4px;margin-bottom:24px}.auth-tab{border:0;background:transparent;padding:9px;border-radius:7px;font-weight:800;color:#74706b}.auth-tab.active{background:#fff;color:#1a1b22;box-shadow:0 2px 8px rgba(61,45,31,.07)}.field{margin-top:15px}.field label{display:block;font-size:11px;font-weight:800;margin-bottom:6px;color:#5f5a55}.field input{width:100%;border:1px solid var(--inner-line-strong);background:#fff;border-radius:9px;padding:11px 12px;outline:none}.auth-card>.btn{width:100%;margin-top:20px}
.inner-page .modal{background:#fff;border:1px solid var(--inner-line)}.inner-page .close{background:#f3eee8}

@media(max-width:980px){
  .inner-mast .mast-grid,.detail-hero-grid,.detail-content,.migration-heading,.migration-work,.account-status,.changelog-layout{grid-template-columns:1fr}
  .mast-proof{justify-content:flex-start}.detail-aside,.now-making{position:static;border-left:0;padding-left:0}.detail-aside{border-top:1px solid var(--inner-line);padding-top:22px}.now-making{border-top:1px solid var(--inner-line);padding-top:20px}.course-all{grid-template-columns:repeat(3,1fr)}.migration-gain-card{max-width:680px}
}
@media(max-width:760px){
  .inner-mast{padding-top:42px}.course-all{grid-template-columns:repeat(2,1fr)}.catalog-tools{overflow:auto}.search{display:none}.rule-strip,.process-line,.account-main,.plan-cols{grid-template-columns:1fr 1fr}.plan-list{grid-template-columns:1fr}.migration-heading{gap:30px}.calc-head{grid-template-columns:1fr}.calc-head .calc-hint{display:none}
}
@media(max-width:520px){
  .course-all,.rule-strip,.process-line,.account-main,.plan-cols{grid-template-columns:1fr}.change-row{grid-template-columns:78px 1fr}.change-type{grid-column:2;width:max-content}.detail-visual{font-size:26px}.migration-result{min-height:290px}.proof-chip{min-width:110px}.mast-proof{width:100%}.proof-chip{flex:1}.migration-title h1{font-size:42px}.migration-title .migration-subtitle{font-size:18px}
}

/* V0.8.10 — Updates: give "Now making" its own supporting color field.
   This is intentionally a compact module, not a page-wide tint. */
.updates-page .changelog-layout{
  align-items:start;
}
.updates-page .now-making{
  position:relative;
  border:1px solid #ddd7f6;
  border-left:1px solid #ddd7f6;
  border-radius:18px;
  padding:26px 26px 22px;
  margin-top:-1px;
  overflow:hidden;
  background:
    radial-gradient(circle at 100% 0%, rgba(107,92,231,.14) 0, rgba(107,92,231,0) 42%),
    linear-gradient(145deg,#f2efff 0%,#faf8ff 54%,#fbf8f3 100%);
  box-shadow:0 16px 40px rgba(54,45,112,.08);
}
.updates-page .now-making::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:4px;
  background:linear-gradient(90deg,#6b5ce7 0%,#8e69ff 52%,#b59cff 100%);
}
.updates-page .now-making .eyebrow{
  margin-top:2px;
  color:#6253d8;
}
.updates-page .now-making h3{
  font-size:20px;
  margin:7px 0 18px;
  letter-spacing:-.025em;
}
.updates-page .making-row{
  position:relative;
  padding:16px 0 17px;
  border-bottom:1px solid rgba(98,83,216,.14);
}
.updates-page .making-row:last-child{
  border-bottom:0;
  padding-bottom:3px;
}
.updates-page .making-row strong{
  font-size:13px;
  color:#171923;
  margin-bottom:5px;
}
.updates-page .making-row span{
  color:#716b7b;
}
.updates-page .making-row .status{
  display:inline-flex;
  align-items:center;
  min-height:23px;
  padding:4px 8px;
  border-radius:999px;
  background:#e8e2ff;
  color:#5547ce;
  font-weight:800;
}