:root {
  --ink: #12263a;
  --ink-soft: #526476;
  --paper: #f7f8f5;
  --surface: #ffffff;
  --line: #dfe6e4;
  --brand: #0b7a75;
  --brand-dark: #075f5b;
  --brand-soft: #dff3ef;
  --violet: #6255d8;
  --violet-soft: #eceafd;
  --amber: #f2a93b;
  --danger: #d74d5a;
  --shadow-sm: 0 8px 30px rgba(18, 38, 58, 0.07);
  --shadow-lg: 0 28px 70px rgba(18, 38, 58, 0.14);
  --radius-sm: 12px;
  --radius: 20px;
  --radius-lg: 32px;
  --container: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; }
.ss-container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.ss-section { padding: 92px 0; }
.ss-section-muted { background: #eef2ef; }
.ss-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.ss-eyebrow::before { content: ""; width: 24px; height: 2px; border-radius: 2px; background: var(--brand); }
.ss-section-heading { max-width: 720px; margin-bottom: 38px; }
.ss-section-heading.center { text-align: center; margin-inline: auto; }
.ss-section-heading.center .ss-eyebrow { justify-content: center; }
.ss-title {
  margin: 12px 0 14px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: -.04em;
}
.ss-desc { color: var(--ink-soft); font-size: 17px; margin: 0; }
.ss-muted { color: var(--ink-soft); }
.ss-kicker { color: var(--brand); font-weight: 800; }

.ss-topline {
  background: var(--ink);
  color: rgba(255,255,255,.78);
  font-size: 13px;
}
.ss-topline-inner { min-height: 36px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.ss-topline a { color: #b8eee7; font-weight: 700; }
.ss-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247,248,245,.92);
  border-bottom: 1px solid rgba(18,38,58,.08);
  backdrop-filter: blur(18px);
}
.ss-nav { min-height: 72px; display: flex; align-items: center; gap: 32px; }
.ss-brand { display: inline-flex; align-items: center; gap: 11px; font-size: 19px; font-weight: 900; letter-spacing: -.03em; }
.ss-brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px 11px 11px 3px;
  color: #fff;
  background: linear-gradient(145deg, var(--brand), #15a59d);
  box-shadow: 0 8px 20px rgba(11,122,117,.24);
  font-family: Georgia, serif;
  font-size: 21px;
}
.ss-brand small { display: block; color: var(--ink-soft); font-size: 10px; font-weight: 700; letter-spacing: .12em; }
.ss-nav-links { display: flex; align-items: center; gap: 6px; margin-left: 12px; }
.ss-nav-links a { padding: 9px 12px; border-radius: 10px; color: #344b5e; font-size: 14px; font-weight: 700; transition: .2s ease; }
.ss-nav-links a:hover, .ss-nav-links a.active { color: var(--brand-dark); background: var(--brand-soft); }
.ss-nav-actions { margin-left: auto; display: flex; align-items: center; gap: 9px; }
.ss-user-link { display: none; font-size: 14px; font-weight: 800; color: var(--brand-dark); }
.ss-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  align-items: center;
  justify-content: center;
}
.ss-mobile-nav { display: none; }

.ss-btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 10px 18px;
  background: transparent;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.ss-btn:hover { transform: translateY(-2px); }
.ss-btn-primary { color: #fff; background: var(--brand); box-shadow: 0 10px 22px rgba(11,122,117,.2); }
.ss-btn-primary:hover { background: var(--brand-dark); }
.ss-btn-violet { color: #fff; background: var(--violet); box-shadow: 0 10px 22px rgba(98,85,216,.22); }
.ss-btn-light { background: #fff; border-color: var(--line); }
.ss-btn-light:hover { border-color: #a9b8b4; box-shadow: var(--shadow-sm); }
.ss-btn-ghost { color: var(--brand-dark); background: var(--brand-soft); }
.ss-btn-lg { min-height: 52px; padding: 13px 23px; border-radius: 14px; font-size: 15px; }
.ss-btn-block { width: 100%; }
.ss-icon { width: 18px; height: 18px; display: inline-block; }

.ss-hero { position: relative; overflow: hidden; padding: 76px 0 84px; }
.ss-hero::before {
  content: "";
  position: absolute;
  width: 560px;
  height: 560px;
  right: -220px;
  top: -260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(98,85,216,.15), transparent 68%);
}
.ss-hero::after {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  left: -300px;
  bottom: -320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(11,122,117,.16), transparent 70%);
}
.ss-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 68px; }
.ss-hero-badge {
  width: fit-content;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 12px;
  border: 1px solid #c6ded9;
  border-radius: 999px;
  background: rgba(255,255,255,.8);
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 800;
}
.ss-live-dot { width: 8px; height: 8px; border-radius: 50%; background: #19a974; box-shadow: 0 0 0 5px rgba(25,169,116,.12); }
.ss-hero h1 { margin: 21px 0 18px; font-size: clamp(44px, 5.5vw, 72px); line-height: 1.06; letter-spacing: -.055em; }
.ss-hero h1 span { position: relative; color: var(--brand); white-space: nowrap; }
.ss-hero h1 span::after { content: ""; position: absolute; height: 9px; left: 0; right: 0; bottom: 2px; z-index: -1; border-radius: 8px; background: #c8ece5; transform: rotate(-1deg); }
.ss-hero-copy > p { max-width: 600px; margin: 0; color: var(--ink-soft); font-size: 18px; }
.ss-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.ss-hero-proof { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 32px; color: #526476; font-size: 13px; font-weight: 700; }
.ss-proof-item { display: flex; align-items: center; gap: 7px; }
.ss-proof-check { width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; color: var(--brand); background: var(--brand-soft); font-size: 12px; }

.ss-ai-card {
  position: relative;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 28px;
  padding: 13px;
  color: #fff;
  background: linear-gradient(148deg, #17394a, #112838 62%, #1b3154);
  box-shadow: var(--shadow-lg);
}
.ss-ai-card::before { content: ""; position: absolute; inset: -18px 40px auto; height: 38px; z-index: -1; border-radius: 50%; background: rgba(11,122,117,.22); filter: blur(30px); }
.ss-ai-window { min-height: 456px; padding: 20px; border: 1px solid rgba(255,255,255,.1); border-radius: 20px; background: rgba(255,255,255,.055); }
.ss-ai-head { display: flex; align-items: center; gap: 10px; padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,.1); }
.ss-ai-avatar { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; color: #0b4c49; background: #a7eee1; font-weight: 900; }
.ss-ai-head strong { display: block; font-size: 14px; }
.ss-ai-head small { display: block; color: rgba(255,255,255,.55); font-size: 11px; }
.ss-model-pill { margin-left: auto; padding: 5px 9px; border-radius: 999px; color: #c7c1ff; background: rgba(98,85,216,.18); font-size: 10px; font-weight: 800; }
.ss-chat-sample { padding: 20px 0 8px; }
.ss-chat-user, .ss-chat-ai { max-width: 88%; margin-bottom: 14px; padding: 12px 14px; border-radius: 14px; font-size: 13px; line-height: 1.65; }
.ss-chat-user { margin-left: auto; color: #fff; background: #5164be; border-bottom-right-radius: 4px; }
.ss-chat-ai { color: #dfe9ed; background: rgba(255,255,255,.08); border-bottom-left-radius: 4px; }
.ss-chat-ai strong { color: #a7eee1; }
.ss-quick-prompts { display: flex; flex-wrap: wrap; gap: 7px; margin: 10px 0 14px; }
.ss-quick-prompt { border: 1px solid rgba(255,255,255,.13); border-radius: 9px; padding: 7px 9px; color: rgba(255,255,255,.72); background: rgba(255,255,255,.04); font-size: 11px; }
.ss-mini-form { display: flex; align-items: flex-end; gap: 8px; border: 1px solid rgba(255,255,255,.14); border-radius: 14px; padding: 8px; background: rgba(3,17,27,.35); }
.ss-mini-form textarea { flex: 1; height: 44px; max-height: 90px; resize: none; border: 0; outline: 0; color: #fff; background: transparent; font-size: 12px; padding: 5px; }
.ss-mini-form textarea::placeholder { color: rgba(255,255,255,.38); }
.ss-mini-send { width: 40px; height: 40px; flex: 0 0 auto; border: 0; border-radius: 10px; color: #0d403d; background: #a7eee1; font-size: 18px; }
.ss-mini-answer { display: none; max-height: 154px; overflow: auto; margin: 12px 0; padding: 12px 14px; border-radius: 12px; color: #dfe9ed; background: rgba(255,255,255,.08); font-size: 12px; }
.ss-mini-answer.show { display: block; }

.ss-trust-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.62); }
.ss-trust-inner { min-height: 92px; display: grid; grid-template-columns: 1.25fr repeat(4, 1fr); align-items: center; }
.ss-trust-copy strong { font-size: 15px; }
.ss-trust-copy span { display: block; color: var(--ink-soft); font-size: 12px; }
.ss-stat { padding-left: 28px; border-left: 1px solid var(--line); }
.ss-stat strong { display: block; font-size: 23px; letter-spacing: -.04em; }
.ss-stat span { color: var(--ink-soft); font-size: 12px; }

.ss-journey { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.ss-journey-card { position: relative; min-height: 260px; padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-sm); overflow: hidden; }
.ss-journey-card::after { content: attr(data-step); position: absolute; right: 14px; bottom: -27px; color: rgba(18,38,58,.05); font-size: 98px; line-height: 1; font-weight: 950; }
.ss-journey-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; color: var(--brand-dark); background: var(--brand-soft); font-size: 20px; font-weight: 900; }
.ss-journey-card:nth-child(2) .ss-journey-icon, .ss-journey-card:nth-child(4) .ss-journey-icon { color: var(--violet); background: var(--violet-soft); }
.ss-journey-card h3 { margin: 20px 0 9px; font-size: 20px; }
.ss-journey-card p { margin: 0 0 18px; color: var(--ink-soft); font-size: 14px; }
.ss-text-link { position: relative; z-index: 1; color: var(--brand-dark); font-size: 13px; font-weight: 850; }

.ss-showcase { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; align-items: center; }
.ss-feature-list { display: grid; gap: 12px; margin-top: 28px; }
.ss-feature-item { display: grid; grid-template-columns: 38px 1fr; gap: 13px; align-items: start; padding: 14px; border-radius: 15px; transition: .2s; }
.ss-feature-item:hover { background: #fff; box-shadow: var(--shadow-sm); }
.ss-feature-item b { display: block; margin-bottom: 2px; }
.ss-feature-item span { color: var(--ink-soft); font-size: 13px; }
.ss-feature-num { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 10px; color: var(--brand-dark); background: var(--brand-soft); font-size: 12px; font-weight: 900; }
.ss-dashboard-card { position: relative; padding: 24px; border: 1px solid #dce3e0; border-radius: 28px; background: #fff; box-shadow: var(--shadow-lg); }
.ss-dashboard-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.ss-dashboard-top h3 { margin: 0; font-size: 17px; }
.ss-dashboard-top span { color: var(--ink-soft); font-size: 12px; }
.ss-progress-ring { width: 126px; height: 126px; margin: 0 auto; display: grid; place-items: center; border-radius: 50%; background: conic-gradient(var(--brand) 0 68%, #e8eeeb 68%); }
.ss-progress-ring::before { content: ""; position: absolute; width: 94px; height: 94px; border-radius: 50%; background: #fff; }
.ss-progress-ring strong { position: relative; z-index: 1; font-size: 28px; }
.ss-progress-ring small { position: relative; z-index: 1; display: block; margin-top: -8px; color: var(--ink-soft); font-size: 10px; text-align: center; }
.ss-dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 11px; margin-top: 22px; }
.ss-dashboard-metric { padding: 14px; border-radius: 14px; background: #f5f7f4; }
.ss-dashboard-metric span { display: block; color: var(--ink-soft); font-size: 11px; }
.ss-dashboard-metric b { font-size: 18px; }
.ss-course-progress { margin-top: 21px; }
.ss-course-row { margin-top: 13px; }
.ss-course-label { display: flex; justify-content: space-between; color: var(--ink-soft); font-size: 11px; }
.ss-progress-bar { height: 7px; margin-top: 6px; border-radius: 8px; background: #e8edeb; overflow: hidden; }
.ss-progress-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--brand), #28b6a8); }

.ss-course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.ss-course-card { display: flex; flex-direction: column; min-height: 250px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: .22s ease; }
.ss-course-card:hover { transform: translateY(-4px); border-color: #a9c9c3; box-shadow: var(--shadow-sm); }
.ss-course-meta { display: flex; justify-content: space-between; gap: 10px; color: var(--ink-soft); font-size: 11px; }
.ss-course-code { color: var(--brand-dark); font-weight: 900; }
.ss-course-card h3 { margin: 15px 0 7px; font-size: 19px; }
.ss-course-card p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.ss-course-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 16px 0 20px; }
.ss-tag { padding: 5px 8px; border-radius: 999px; color: #526476; background: #f0f3f1; font-size: 10px; font-weight: 800; }
.ss-course-footer { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 15px; border-top: 1px solid #edf0ee; }
.ss-course-footer span { color: var(--ink-soft); font-size: 11px; }

.ss-quote { padding: 80px 0; color: #fff; background: linear-gradient(135deg, #112d3c, #163c4b 58%, #273b67); }
.ss-quote-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.ss-quote blockquote { margin: 0; font-size: clamp(26px, 3.6vw, 42px); line-height: 1.3; font-weight: 800; letter-spacing: -.035em; }
.ss-quote blockquote span { color: #a7eee1; }
.ss-quote p { color: rgba(255,255,255,.66); }
.ss-policy-list { display: grid; gap: 10px; }
.ss-policy-item { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border: 1px solid rgba(255,255,255,.1); border-radius: 14px; background: rgba(255,255,255,.055); }
.ss-policy-item b { display: block; font-size: 14px; }
.ss-policy-item small { color: rgba(255,255,255,.52); }
.ss-policy-dot { width: 10px; height: 10px; flex: 0 0 auto; border-radius: 50%; background: #a7eee1; box-shadow: 0 0 0 6px rgba(167,238,225,.08); }

.ss-faq { max-width: 860px; margin: 0 auto; }
.ss-faq-item { border-bottom: 1px solid var(--line); }
.ss-faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 0; border: 0; color: var(--ink); background: transparent; text-align: left; font-size: 17px; font-weight: 850; }
.ss-faq-plus { transition: transform .2s; color: var(--brand); font-size: 22px; }
.ss-faq-answer { max-height: 0; overflow: hidden; color: var(--ink-soft); transition: max-height .28s ease; }
.ss-faq-answer p { margin: 0; padding: 0 44px 22px 0; }
.ss-faq-item.open .ss-faq-answer { max-height: 220px; }
.ss-faq-item.open .ss-faq-plus { transform: rotate(45deg); }

.ss-cta { padding: 0 0 88px; }
.ss-cta-card { position: relative; overflow: hidden; padding: 52px; border-radius: 30px; color: #fff; background: linear-gradient(135deg, var(--brand-dark), #0b7a75 58%, #18988f); }
.ss-cta-card::after { content: "自考"; position: absolute; right: -20px; bottom: -68px; color: rgba(255,255,255,.06); font-size: 180px; font-weight: 950; line-height: 1; }
.ss-cta-card h2 { max-width: 660px; margin: 0 0 12px; font-size: clamp(30px, 4vw, 48px); line-height: 1.15; letter-spacing: -.04em; }
.ss-cta-card p { max-width: 680px; margin: 0 0 25px; color: rgba(255,255,255,.76); }
.ss-cta-card .ss-btn { position: relative; z-index: 1; }

.ss-footer { padding: 56px 0 24px; color: rgba(255,255,255,.7); background: #0f2433; }
.ss-footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 50px; }
.ss-footer .ss-brand { color: #fff; }
.ss-footer-desc { max-width: 360px; margin-top: 18px; font-size: 13px; }
.ss-footer h4 { margin: 0 0 15px; color: #fff; font-size: 14px; }
.ss-footer-links { display: grid; gap: 9px; font-size: 13px; }
.ss-footer-links a:hover { color: #a7eee1; }
.ss-footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 42px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.09); font-size: 11px; }

/* Inner pages */
.ss-page-hero { padding: 52px 0 40px; background: linear-gradient(180deg, #edf5f2, transparent); }
.ss-page-hero h1 { margin: 9px 0 12px; font-size: clamp(34px, 5vw, 54px); line-height: 1.12; letter-spacing: -.045em; }
.ss-page-hero p { max-width: 680px; margin: 0; color: var(--ink-soft); font-size: 16px; }
.ss-breadcrumb { color: var(--ink-soft); font-size: 12px; }
.ss-breadcrumb a { color: var(--brand-dark); font-weight: 800; }
.ss-app-shell { min-height: calc(100vh - 109px); padding: 28px 0 72px; }
.ss-card { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.ss-card-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 22px; border-bottom: 1px solid #edf0ee; }
.ss-card-head h2, .ss-card-head h3 { margin: 0; font-size: 17px; }
.ss-card-body { padding: 22px; }
.ss-field { margin-bottom: 16px; }
.ss-field label { display: flex; justify-content: space-between; margin-bottom: 7px; color: #344b5e; font-size: 12px; font-weight: 850; }
.ss-input, .ss-select, .ss-textarea {
  width: 100%;
  border: 1px solid #d9e1df;
  border-radius: 11px;
  outline: none;
  padding: 11px 12px;
  color: var(--ink);
  background: #fff;
  transition: .2s ease;
}
.ss-textarea { min-height: 100px; resize: vertical; }
.ss-input:focus, .ss-select:focus, .ss-textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 4px rgba(11,122,117,.1); }
.ss-help { margin-top: 6px; color: #7a8995; font-size: 10px; }
.ss-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ss-alert { padding: 12px 14px; border-radius: 12px; color: #75531c; background: #fff4dc; font-size: 12px; }
.ss-status { display: inline-flex; align-items: center; gap: 7px; color: var(--ink-soft); font-size: 11px; }
.ss-status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #aab5bb; }
.ss-status.online::before { background: #19a974; box-shadow: 0 0 0 4px rgba(25,169,116,.12); }
.ss-status.error::before { background: var(--danger); }

/* Agent page */
.agent-layout { height: calc(100vh - 109px); min-height: 650px; display: grid; grid-template-columns: 290px 1fr; background: #fff; }
.agent-sidebar { padding: 24px; overflow-y: auto; border-right: 1px solid var(--line); background: #f4f6f3; }
.agent-sidebar h2 { margin: 0 0 5px; font-size: 18px; }
.agent-sidebar > p { margin: 0 0 20px; color: var(--ink-soft); font-size: 12px; }
.agent-mode-list { display: grid; gap: 7px; margin-bottom: 22px; }
.agent-mode { display: flex; align-items: center; gap: 11px; padding: 11px; border: 1px solid transparent; border-radius: 12px; color: #405567; background: transparent; text-align: left; }
.agent-mode:hover { background: #fff; }
.agent-mode.active { border-color: #b9d8d2; color: var(--brand-dark); background: #fff; box-shadow: 0 6px 18px rgba(18,38,58,.05); }
.agent-mode-icon { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 9px; background: var(--brand-soft); font-size: 13px; font-weight: 900; }
.agent-mode b { display: block; font-size: 12px; }
.agent-mode small { display: block; color: #7a8995; font-size: 9px; }
.agent-profile-toggle { width: 100%; display: flex; justify-content: space-between; padding: 12px 0; border: 0; border-top: 1px solid var(--line); color: var(--ink); background: transparent; font-size: 12px; font-weight: 850; }
.agent-profile { display: grid; gap: 10px; }
.agent-profile .ss-field { margin: 0; }
.agent-profile .ss-input, .agent-profile .ss-select { padding: 9px 10px; font-size: 11px; }
.agent-main { min-width: 0; display: flex; flex-direction: column; background: #fff; }
.agent-toolbar { min-height: 64px; display: flex; align-items: center; gap: 12px; padding: 0 26px; border-bottom: 1px solid var(--line); }
.agent-toolbar h1 { margin: 0; font-size: 16px; }
.agent-toolbar .ss-status { margin-left: auto; }
.agent-clear { border: 0; color: var(--ink-soft); background: transparent; font-size: 11px; font-weight: 800; }
.agent-messages { flex: 1; overflow-y: auto; padding: 28px clamp(20px, 7vw, 100px); }
.agent-welcome { max-width: 720px; margin: 6vh auto 0; text-align: center; }
.agent-welcome-mark { width: 64px; height: 64px; margin: 0 auto 18px; display: grid; place-items: center; border-radius: 20px 20px 20px 6px; color: #fff; background: linear-gradient(145deg, var(--brand), #15a59d); box-shadow: 0 14px 30px rgba(11,122,117,.2); font-size: 26px; font-weight: 900; }
.agent-welcome h2 { margin: 0 0 8px; font-size: 28px; }
.agent-welcome p { margin: 0 auto; max-width: 540px; color: var(--ink-soft); font-size: 13px; }
.agent-suggestions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 24px; }
.agent-suggestion { padding: 14px; border: 1px solid var(--line); border-radius: 13px; color: #405567; background: #fff; text-align: left; font-size: 12px; font-weight: 750; transition: .2s; }
.agent-suggestion:hover { border-color: var(--brand); color: var(--brand-dark); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.agent-message { max-width: 820px; margin: 0 auto 24px; display: grid; grid-template-columns: 34px 1fr; gap: 13px; }
.agent-message.user { grid-template-columns: 1fr 34px; }
.agent-message.user .agent-message-content { grid-column: 1; grid-row: 1; justify-self: end; max-width: 78%; color: #fff; background: var(--brand); border-radius: 16px 16px 4px 16px; }
.agent-message.user .agent-message-avatar { grid-column: 2; }
.agent-message-avatar { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; color: var(--brand-dark); background: var(--brand-soft); font-size: 12px; font-weight: 900; }
.agent-message.user .agent-message-avatar { color: #fff; background: #526476; }
.agent-message-content { min-width: 0; padding: 12px 15px; border-radius: 4px 16px 16px 16px; color: #31485a; background: #f3f6f4; font-size: 13px; line-height: 1.75; }
.agent-message-content > :first-child { margin-top: 0; }
.agent-message-content > :last-child { margin-bottom: 0; }
.agent-message-content h1, .agent-message-content h2, .agent-message-content h3 { margin: 18px 0 8px; color: var(--ink); font-size: 15px; }
.agent-message-content ul, .agent-message-content ol { padding-left: 20px; }
.agent-message-content code { padding: 2px 5px; border-radius: 5px; background: #e5ece9; font-size: 11px; }
.agent-compose-wrap { padding: 14px clamp(20px, 7vw, 100px) 20px; border-top: 1px solid var(--line); background: rgba(255,255,255,.95); }
.agent-compose { max-width: 820px; margin: 0 auto; display: flex; align-items: flex-end; gap: 10px; padding: 10px; border: 1px solid #d6dfdc; border-radius: 16px; box-shadow: 0 10px 35px rgba(18,38,58,.08); }
.agent-compose:focus-within { border-color: var(--brand); box-shadow: 0 0 0 4px rgba(11,122,117,.08), 0 10px 35px rgba(18,38,58,.08); }
.agent-compose textarea { flex: 1; min-height: 44px; max-height: 128px; resize: none; border: 0; outline: 0; padding: 10px; color: var(--ink); background: transparent; font-size: 13px; }
.agent-send { width: 44px; height: 44px; flex: 0 0 auto; border: 0; border-radius: 12px; color: #fff; background: var(--brand); font-size: 18px; }
.agent-send:disabled { cursor: not-allowed; opacity: .5; }
.agent-disclaimer { max-width: 820px; margin: 7px auto 0; color: #8a969d; font-size: 9px; text-align: center; }
.typing-dots { display: flex; gap: 5px; padding: 6px 0; }
.typing-dots i { width: 6px; height: 6px; border-radius: 50%; background: #8fa3a0; animation: typing 1s infinite ease-in-out; }
.typing-dots i:nth-child(2) { animation-delay: .16s; }
.typing-dots i:nth-child(3) { animation-delay: .32s; }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: .45; } 30% { transform: translateY(-5px); opacity: 1; } }

/* Question bank */
.bank-toolbar { display: grid; grid-template-columns: 1.5fr repeat(3, .7fr) auto; gap: 10px; align-items: end; }
.bank-toolbar .ss-field { margin: 0; }
.bank-course-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 24px; }
.bank-course { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: #fff; cursor: pointer; transition: .2s; }
.bank-course:hover, .bank-course.active { border-color: var(--brand); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.bank-course.active { box-shadow: 0 0 0 3px rgba(11,122,117,.1); }
.bank-course-code { color: var(--brand); font-size: 10px; font-weight: 900; }
.bank-course h3 { margin: 8px 0 4px; font-size: 15px; }
.bank-course p { margin: 0; color: var(--ink-soft); font-size: 10px; }
.quiz-shell { display: none; margin-top: 24px; }
.quiz-shell.show { display: grid; grid-template-columns: 1fr 270px; gap: 18px; }
.quiz-question { padding: 26px; }
.quiz-badge-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.quiz-source { padding: 5px 9px; border-radius: 999px; color: #75531c; background: #fff4dc; font-size: 10px; font-weight: 850; }
.quiz-count { color: var(--ink-soft); font-size: 11px; }
.quiz-content { margin: 0 0 22px; font-size: 18px; line-height: 1.65; }
.quiz-options { display: grid; gap: 10px; }
.quiz-option { width: 100%; display: grid; grid-template-columns: 32px 1fr; gap: 11px; align-items: center; padding: 13px; border: 1px solid var(--line); border-radius: 13px; color: #344b5e; background: #fff; text-align: left; transition: .18s; }
.quiz-option:hover { border-color: #9fc8c1; background: #f5fbf9; }
.quiz-option.selected { border-color: var(--brand); background: var(--brand-soft); }
.quiz-option.correct { border-color: #20a779; background: #e6f7f0; }
.quiz-option.wrong { border-color: var(--danger); background: #fff0f1; }
.quiz-key { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 9px; background: #eef2f0; font-size: 11px; font-weight: 900; }
.quiz-actions { display: flex; justify-content: space-between; gap: 10px; margin-top: 22px; padding-top: 18px; border-top: 1px solid #edf0ee; }
.quiz-explanation { display: none; margin-top: 18px; padding: 16px; border-radius: 13px; color: #365365; background: #eef7f5; font-size: 12px; }
.quiz-explanation.show { display: block; }
.quiz-explanation b { color: var(--brand-dark); }
.quiz-nav { padding: 20px; align-self: start; }
.quiz-nav h3 { margin: 0 0 14px; font-size: 14px; }
.quiz-dots { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }
.quiz-dot { aspect-ratio: 1; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; color: var(--ink-soft); background: #fff; font-size: 10px; font-weight: 800; }
.quiz-dot.current { border-color: var(--brand); color: #fff; background: var(--brand); }
.quiz-dot.done { color: var(--brand-dark); background: var(--brand-soft); }
.quiz-summary { display: grid; gap: 8px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); }
.quiz-summary div { display: flex; justify-content: space-between; color: var(--ink-soft); font-size: 11px; }

/* Plan */
.plan-layout { display: grid; grid-template-columns: 390px 1fr; gap: 22px; align-items: start; }
.plan-form-card { position: sticky; top: 96px; }
.plan-output { min-height: 620px; }
.plan-empty { min-height: 560px; display: grid; place-items: center; padding: 40px; color: var(--ink-soft); text-align: center; }
.plan-empty-mark { width: 70px; height: 70px; margin: 0 auto 18px; display: grid; place-items: center; border-radius: 20px; color: var(--violet); background: var(--violet-soft); font-size: 25px; font-weight: 900; }
.plan-content { display: none; padding: 28px; font-size: 13px; line-height: 1.8; }
.plan-content.show { display: block; }
.plan-content h1, .plan-content h2, .plan-content h3 { margin: 24px 0 10px; color: var(--ink); line-height: 1.35; }
.plan-content h1 { font-size: 22px; }
.plan-content h2 { font-size: 18px; }
.plan-content h3 { font-size: 15px; }
.plan-content ul, .plan-content ol { padding-left: 22px; }
.plan-content table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; }
.plan-content th, .plan-content td { min-width: 110px; padding: 9px; border: 1px solid var(--line); text-align: left; }
.course-entry-row { display: flex; gap: 8px; margin-bottom: 8px; }
.course-entry-row .ss-input { flex: 1; }
.course-remove { width: 40px; flex: 0 0 auto; border: 1px solid var(--line); border-radius: 10px; color: var(--danger); background: #fff; }
.course-add { width: 100%; padding: 9px; border: 1px dashed #b8c7c2; border-radius: 10px; color: var(--brand-dark); background: #f7fbfa; font-size: 11px; font-weight: 850; }
.ss-loading { display: none; min-height: 560px; place-items: center; text-align: center; }
.ss-loading.show { display: grid; }
.ss-spinner { width: 42px; height: 42px; margin: 0 auto 14px; border: 4px solid var(--brand-soft); border-top-color: var(--brand); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.ss-toast { position: fixed; left: 50%; bottom: 26px; z-index: 1000; transform: translate(-50%, 16px); opacity: 0; padding: 11px 16px; border-radius: 11px; color: #fff; background: #183346; box-shadow: var(--shadow-lg); font-size: 12px; transition: .25s; }
.ss-toast.show { transform: translate(-50%, 0); opacity: 1; }
.ss-toast.error { background: #9f3540; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1000px) {
  .ss-nav-links { display: none; }
  .ss-menu-btn { display: inline-flex; }
  .ss-nav-actions .ss-login, .ss-nav-actions .ss-register { display: none; }
  .ss-mobile-nav { position: fixed; inset: 109px 0 0; z-index: 99; padding: 22px; background: rgba(247,248,245,.98); }
  .ss-mobile-nav.show { display: grid; align-content: start; gap: 7px; }
  .ss-mobile-nav a { padding: 13px 15px; border-radius: 12px; color: #344b5e; background: #fff; font-weight: 800; }
  .ss-hero-grid, .ss-showcase, .ss-quote-grid { grid-template-columns: 1fr; }
  .ss-hero-grid { gap: 48px; }
  .ss-hero-copy { text-align: center; }
  .ss-hero-badge { margin-inline: auto; }
  .ss-hero-copy > p { margin-inline: auto; }
  .ss-hero-actions, .ss-hero-proof { justify-content: center; }
  .ss-ai-card { width: min(100%, 600px); margin: 0 auto; }
  .ss-journey { grid-template-columns: 1fr 1fr; }
  .ss-course-grid { grid-template-columns: 1fr 1fr; }
  .ss-trust-inner { grid-template-columns: 1fr 1fr 1fr; padding: 22px 0; gap: 20px; }
  .ss-trust-copy { grid-column: 1 / -1; }
  .ss-stat { padding-left: 18px; }
  .ss-footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .ss-footer-grid > div:last-child { display: none; }
  .bank-course-grid { grid-template-columns: 1fr 1fr; }
  .bank-toolbar { grid-template-columns: 1fr 1fr; }
  .bank-toolbar .ss-field:first-child { grid-column: 1 / -1; }
  .bank-toolbar .ss-btn { align-self: end; }
  .plan-layout { grid-template-columns: 1fr; }
  .plan-form-card { position: static; }
}

@media (max-width: 760px) {
  .ss-container { width: min(calc(100% - 28px), var(--container)); }
  .ss-topline-inner { justify-content: center; min-height: 32px; }
  .ss-topline-inner span:last-child { display: none; }
  .ss-header { top: 0; }
  .ss-nav { min-height: 64px; gap: 10px; }
  .ss-brand { font-size: 16px; }
  .ss-brand-mark { width: 34px; height: 34px; }
  .ss-brand small { display: none; }
  .ss-mobile-nav { inset: 96px 0 0; }
  .ss-section { padding: 66px 0; }
  .ss-hero { padding: 48px 0 60px; }
  .ss-hero h1 { font-size: 43px; }
  .ss-hero-copy > p { font-size: 16px; }
  .ss-hero-actions .ss-btn { width: 100%; }
  .ss-hero-proof { gap: 10px 16px; }
  .ss-ai-window { min-height: 420px; padding: 14px; }
  .ss-journey, .ss-course-grid { grid-template-columns: 1fr; }
  .ss-journey-card { min-height: 220px; }
  .ss-trust-inner { grid-template-columns: 1fr 1fr; }
  .ss-stat { padding: 0; border: 0; }
  .ss-showcase { gap: 38px; }
  .ss-quote { padding: 60px 0; }
  .ss-cta-card { padding: 34px 24px; }
  .ss-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .ss-footer-grid > div:first-child { grid-column: 1 / -1; }
  .ss-footer-bottom { display: block; }
  .ss-footer-bottom span { display: block; margin-top: 6px; }
  .ss-form-row { grid-template-columns: 1fr; }

  .agent-layout { height: calc(100vh - 96px); min-height: 560px; grid-template-columns: 1fr; }
  .agent-sidebar { display: none; }
  .agent-toolbar { padding: 0 15px; }
  .agent-messages { padding: 20px 14px; }
  .agent-welcome { margin-top: 2vh; }
  .agent-welcome h2 { font-size: 23px; }
  .agent-suggestions { grid-template-columns: 1fr; }
  .agent-message.user .agent-message-content { max-width: 90%; }
  .agent-compose-wrap { padding: 10px 12px 13px; }

  .bank-toolbar { grid-template-columns: 1fr; }
  .bank-toolbar .ss-field:first-child { grid-column: auto; }
  .bank-course-grid { grid-template-columns: 1fr; }
  .quiz-shell.show { grid-template-columns: 1fr; }
  .quiz-nav { order: -1; }
  .quiz-summary { display: none; }
  .quiz-dots { grid-template-columns: repeat(10, 1fr); }
  .quiz-question { padding: 19px; }
  .quiz-actions { flex-wrap: wrap; }
  .plan-content { padding: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}