:root {
  --navy: #09172f;
  --ink: #12243e;
  --muted: #546984;
  --blue: #2375e8;
  --blue-dark: #155dbf;
  --ice: #7edcf9;
  --line: #dce6f4;
  --paper: #f5f9ff;
  --white: #fff;
  --soft-shadow: 0 16px 48px rgba(33, 88, 149, .08);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: var(--font); line-height: 1.65; }
button { font: inherit; }
button { cursor: pointer; color: inherit; }
a { color: inherit; text-decoration: none; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #4da0f7; outline-offset: 4px; }
[hidden] { display: none !important; }
h1, h2, h3, h4, p, ol, blockquote { margin: 0; }
::selection { color: var(--navy); background: #b8e7ff; }

.container { width: min(1240px, calc(100% - 96px)); margin-inline: auto; }
.section { padding-block: 100px; }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .13em; color: var(--blue-dark); }
.blue { color: var(--blue); }
.section-heading { margin: 16px 0 40px; }
.section-heading h2, .about h2, .contact-section h2 {
  font-size: clamp(30px, 3.05vw, 43px);
  letter-spacing: -.055em;
  line-height: 1.26;
}
.section-heading p, .about-copy p, .contact-inner > p {
  margin-top: 17px;
  color: var(--muted);
  font-size: 15px;
}
.button {
  min-height: 48px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 19px;
  padding: 11px 19px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
  transition: background .2s, border-color .2s, box-shadow .2s;
}
.button.primary { background: var(--blue); color: #fff; }
.button.primary:hover { background: var(--blue-dark); box-shadow: 0 6px 20px #2375e828; }
.button.secondary { background: #fff; border-color: #d5e1f0; color: var(--ink); }
.button.secondary:hover { background: #f4f9ff; border-color: #9bbded; }
.text-link { background: none; border: 0; padding: 0; color: var(--blue-dark); font-weight: 600; font-size: 14px; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.status-dot { display: inline-block; flex: 0 0 auto; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 4px #2375e812; }
.tile-icon {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border: 1px solid #d6e7fb;
  border-radius: 12px;
  background: #eaf3ff;
  color: var(--blue-dark);
  font-size: 21px;
  line-height: 1;
}
.skip-link { position: fixed; top: -100px; left: 20px; background: #fff; padding: 12px 20px; z-index: 99; }
.skip-link:focus { top: 10px; }

.header { position: sticky; top: 0; z-index: 30; border-bottom: 1px solid #e0e9f4; background: #fffffffa; }
.header.scrolled { box-shadow: 0 3px 22px #14294508; }
.header-inner { width: min(1450px, calc(100% - 80px)); margin: auto; min-height: 83px; display: flex; align-items: center; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 9px; flex: 0 0 auto; color: var(--navy); }
.brand-symbol { width: 29px; height: 29px; border: 2px solid #2375e8; border-radius: 50%; display: grid; place-items: center; position: relative; }
.brand-symbol::after { content: ""; position: absolute; inset: 2px -4px 2px 4px; border: 1px solid #46b2ee; border-radius: 50%; }
.brand-symbol i { width: 12px; height: 12px; background: var(--navy); border-radius: 50%; }
.brand-word { font-size: 24px; font-weight: 750; letter-spacing: .06em; line-height: 1; }
.brand-word > span { display: block; margin-top: 4px; font: 6px Arial, sans-serif; letter-spacing: .12em; }
.brand-title { border-left: 1px solid #d8e4f2; margin-left: 4px; padding-left: 12px; font-size: 14px; font-weight: 650; }
.nav { display: flex; align-items: center; gap: clamp(16px, 2vw, 30px); }
.nav a { position: relative; padding-block: 12px; font-size: 14px; white-space: nowrap; }
.nav a:hover, .nav a.current { color: var(--blue-dark); }
.nav a.current::after { content: ""; position: absolute; width: 14px; height: 3px; bottom: 1px; left: calc(50% - 7px); border-radius: 9px; background: var(--blue); }
.header-cta { margin-left: auto; min-height: 45px; }
.menu-toggle { display: none; background: none; border: 0; padding: 10px; }
.menu-toggle span { display: block; width: 22px; height: 2px; border-radius: 2px; background: var(--navy); margin: 5px 0; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 82px 0 60px;
  background:
    radial-gradient(ellipse at 6% 12%, #dff5fc 0, transparent 50%),
    radial-gradient(ellipse at 91% 32%, #d4e5ff 0, transparent 60%),
    radial-gradient(ellipse at 82% 78%, #e0f4ff 0, transparent 52%),
    #f6f9fd;
}
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.hero-copy { padding-bottom: 26px; }
.hero-label { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; color: var(--muted); font-size: 13px; }
.hero-label strong { color: var(--blue-dark); }
.hero-label > span:last-child { padding-left: 12px; border-left: 1px solid #cfdfee; }
.hero h1 { margin: 29px 0 24px; font-size: clamp(43px, 4.5vw, 65px); line-height: 1.24; letter-spacing: -.055em; color: var(--navy); }
.hero h1 > span { color: var(--blue); position: relative; white-space: nowrap; }
.hero h1 > span::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -.04em;
  height: .17em;
  border-top: .065em solid #57bfea;
  border-radius: 50%;
  transform: rotate(-2deg);
}
.hero-copy > p { color: var(--muted); font-size: 15px; line-height: 1.95; }
.hero-copy > p > strong { color: var(--ink); font-weight: 600; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 25px; }
.hero-actions .button { min-height: 54px; padding-inline: 22px; }
.hero-actions .secondary > span { font-size: 11px; }
.hero-traits { display: flex; flex-wrap: wrap; gap: 11px 17px; margin-top: 18px; color: var(--muted); font-size: 12px; }
.hero-traits > span::before, .product-features > span::before { content: "✓"; color: var(--blue-dark); margin-right: 6px; }
.hero-traits > a, .product-features > a { color: var(--blue-dark); font-weight: 650; }
.hero-traits > a:hover, .product-features > a:hover { text-decoration: underline; text-underline-offset: 3px; }

.workbench-wrap { min-width: 0; }
.workbench { padding: 24px; border: 1px solid #ffffffdf; border-radius: 26px; background: linear-gradient(145deg, #fffffff2, #f8fcffdc 60%, #e6f8fdeb); box-shadow: 0 26px 65px #225a9d20; }
.workbench-top, .workbench-footer, .preview-top, .demo-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.workbench-top { border-bottom: 1px solid #deebf7; padding-bottom: 16px; color: var(--muted); font-size: 12px; font-weight: 650; }
.workbench-top > span, .preview-top > span, .demo-top > span { display: flex; align-items: center; gap: 8px; }
.workbench-top > small, .demo-top > small { border: 1px solid #cfdef2; border-radius: 6px; background: #f0f7ff; padding: 3px 8px; color: var(--blue-dark); font-size: 10px; white-space: nowrap; }
.workbench-intro { display: flex; align-items: center; gap: 17px; padding-block: 24px; }
.workbench-icon {
  width: 79px;
  height: 79px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 22px;
  border: 1px solid #92d3ff;
  background: radial-gradient(circle at 16% 4%, #82d9f8 0, transparent 48%), linear-gradient(140deg, #3b9bec, #255adb);
  color: #fff;
  box-shadow: inset 0 0 0 5px #ffffff1b, 0 9px 23px #2375e837;
  font-size: 46px;
  line-height: 1;
}
.workbench-intro h2 { font-size: clamp(18px, 1.7vw, 24px); letter-spacing: -.035em; line-height: 1.35; }
.workbench-intro p { margin-top: 7px; color: var(--muted); font-size: 12px; }
.workbench-tabs { display: inline-flex; gap: 4px; padding: 4px; margin-bottom: 12px; border: 1px solid var(--line); border-radius: 10px; background: #edf4fd; }
.workbench-tabs button { border: 0; border-radius: 7px; background: transparent; padding: 7px 11px; color: var(--muted); font-size: 13px; }
.workbench-tabs .active { color: var(--blue-dark); background: #fff; box-shadow: 0 2px 7px #1a4b7c12; }
.workbench-detail { display: grid; gap: 11px; }
.workbench-task, .workbench-tip { display: flex; align-items: center; gap: 12px; border-radius: 13px; border: 1px solid #c8def8; padding: 15px; }
.workbench-task { min-height: 102px; background: linear-gradient(120deg, #e5f0ff, #eef9ff); }
.workbench-task .tile-icon { background: #d4e7ff; border-color: #c0dafb; }
.workbench-task small, .workbench-task strong { display: block; }
.workbench-task small { color: var(--blue-dark); font-size: 11px; }
.workbench-task strong { margin: 3px 0; font-size: 14px; }
.workbench-task p, .workbench-tip p { color: var(--muted); font-size: 12px; }
.waveform { display: flex; align-items: center; margin-left: auto; gap: 3px; padding-left: 4px; }
.waveform i { width: 2px; height: 9px; border-radius: 2px; background: #409de8; }
.waveform i:nth-child(3n + 1) { height: 16px; }
.waveform i:nth-child(4n + 2) { height: 24px; }
.workbench-tip { min-height: 69px; background: #ffffffc9; border-color: #d6e6f4; }
.workbench-tip .tile-icon { width: 33px; height: 33px; border-radius: 9px; font-size: 16px; background: #e6f7fd; border-color: #d4effa; }
.workbench-tip strong { display: block; color: var(--blue-dark); font-size: 12px; margin-bottom: 2px; }
.workbench-flow { margin-top: 15px; }
.workbench-flow p { font-size: 12px; color: var(--muted); }
.workbench-flow ol { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; text-align: center; position: relative; margin: 11px 0 16px; }
.workbench-flow ol::before { content: ""; position: absolute; top: 21px; left: 12%; right: 12%; height: 1px; background: #bfd6f3; }
.workbench-flow li { position: relative; color: var(--muted); font-size: 11px; }
.workbench-flow li > span { display: grid; place-items: center; width: 43px; height: 43px; margin: 0 auto 7px; border: 1px solid #d1e2fc; border-radius: 13px; background: #edf4ff; color: var(--blue-dark); font-size: 17px; }
.workbench-flow li:nth-child(even) > span { background: #e4f7fe; border-color: #cfeaf5; }
.workbench-footer { justify-content: flex-start; border-top: 1px solid #deebf7; padding-top: 13px; color: var(--muted); font-size: 11px; gap: 12px; }
.workbench-footer a { margin-left: auto; color: var(--blue-dark); white-space: nowrap; }
.workbench-caption { margin-top: 17px; text-align: center; color: var(--muted); font-size: 12px; }
.quick-help { margin-top: 37px; padding: 22px 28px; border: 1px solid #b9d6f7; border-radius: 20px; background: #ffffffbb; box-shadow: var(--soft-shadow); }
.quick-heading, .quick-questions { display: flex; align-items: center; gap: 11px; flex-wrap: wrap; }
.quick-heading h2 { font-size: 21px; letter-spacing: -.04em; }
.quick-caption { margin-left: auto; color: var(--muted); font-size: 12px; }
.quick-questions { margin-top: 15px; }
.quick-questions button { padding: 6px 11px; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--muted); font-size: 12px; }
.quick-questions button:hover, .quick-questions button[aria-pressed="true"] { color: var(--blue-dark); background: #edf5ff; border-color: #a6c8f1; }
.quick-questions button span { margin-left: 5px; }
.quick-answer { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 14px; color: var(--muted); font-size: 14px; }
.quick-answer a { display: inline-block; margin-top: 7px; }

.scenario-layout { display: grid; grid-template-columns: minmax(180px, 250px) minmax(0, 1fr); gap: 27px; }
.scenario-tabs, .loop-tabs { display: grid; gap: 9px; align-content: start; }
.scenario-tabs button, .loop-tabs button, .product-tabs button {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
}
.scenario-tabs button { min-height: 70px; padding: 13px 16px; font-size: 14px; font-weight: 600; }
.scenario-tabs button i, .loop-tabs button i { margin-left: auto; font-style: normal; color: var(--blue-dark); }
.scenario-tabs button:hover, .loop-tabs button:hover, .product-tabs button:hover { border-color: #a9c9f4; }
.scenario-tabs button.active { border-color: #bbd4f9; background: #eaf3ff; color: var(--blue-dark); }
.scenario-panel { min-width: 0; border-radius: 21px; border: 1px solid #cfdff6; background: linear-gradient(135deg, #eef5ff, #f7faff); padding: 28px; }
.scenario-label { display: inline-block; padding: 4px 11px; border-radius: 20px; border: 1px solid #d3e3f9; background: #fff; color: var(--blue-dark); font-size: 12px; }
.scenario-content h3, .product-copy h3 { margin: 16px 0 10px; font-size: clamp(23px, 2.25vw, 31px); line-height: 1.38; letter-spacing: -.04em; }
.scenario-content p, .product-copy p { color: var(--muted); font-size: 15px; line-height: 1.85; }
.roadmap-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; position: relative; margin: 27px 0 23px; text-align: center; }
.roadmap-steps::before { content: ""; position: absolute; top: 22px; left: 11%; right: 11%; border-top: 1px dashed #a9c7ee; }
.roadmap-steps > div { position: relative; }
.roadmap-steps span { display: grid; place-items: center; margin: 0 auto 8px; width: 44px; height: 44px; border: 1px solid #c5dcf9; border-radius: 12px; background: #fff; color: var(--blue-dark); font-size: 12px; font-weight: 600; }
.roadmap-steps b, .roadmap-steps small { display: block; }
.roadmap-steps b { font-size: 13px; font-weight: 600; }
.roadmap-steps small { color: var(--muted); font-size: 11px; margin-top: 3px; }
.scenario-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.scenario-cards article { display: flex; align-items: flex-start; gap: 11px; padding: 16px; border-radius: 14px; border: 1px solid var(--line); background: #ffffffd9; }
.scenario-cards small { color: var(--muted); font-size: 11px; }
.scenario-cards h4 { margin: 3px 0 4px; font-size: 15px; }
.scenario-cards p { color: var(--muted); font-size: 12px; }
.scenario-footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 21px; }
.scenario-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.scenario-tags > span { border-radius: 6px; padding: 3px 8px; background: #e4efff; color: #375f92; font-size: 11px; }

.products { background: radial-gradient(ellipse at 0 6%, #e7f7fe, transparent 62%), #f4f8fd; }
.product-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 340px)); gap: 12px; margin-bottom: 23px; }
.product-tabs button { padding: 16px 20px; min-height: 83px; }
.product-tabs button.active { border-color: var(--blue); box-shadow: inset 0 0 0 1px var(--blue); color: var(--blue-dark); }
.product-tabs b, .product-tabs small { display: block; }
.product-tabs b { font-size: 15px; }
.product-tabs small { font-size: 11px; margin-top: 3px; color: var(--muted); }
.product-panel { display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 34px; padding: 32px; border: 1px solid #d5e4f7; border-radius: 23px; background: #fff; box-shadow: var(--soft-shadow); }
.product-copy h3 { margin-top: 0; }
.product-copy p { max-width: 34ch; }
.product-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px 12px; max-width: 400px; margin: 22px 0; font-size: 13px; color: var(--muted); }
.product-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.product-preview { min-width: 0; border-radius: 16px; padding: 15px; background: #f1f7ff; border: 1px solid #dce9fa; }
.preview-top { margin-bottom: 11px; color: var(--muted); font-size: 12px; }
.preview-top > small { font-size: 10px; }
.preview-window { background: #fff; border-radius: 10px; border: 1px solid #d7e5f7; overflow: hidden; }
.preview-chrome { display: flex; gap: 10px; padding: 8px 11px; border-bottom: 1px solid #e5edf8; color: var(--muted); font-size: 10px; }
.preview-chrome > span:first-child { color: #86b7ec; }
.preview-dashboard { display: grid; grid-template-columns: 109px minmax(0, 1fr); }
.preview-sidebar { display: grid; align-content: start; gap: 5px; padding: 11px 7px; background: #f8faff; border-right: 1px solid #e4edf9; color: var(--muted); font-size: 11px; }
.preview-sidebar > * { padding: 5px; }
.preview-sidebar .selected { background: #e9f2ff; border-radius: 5px; color: var(--blue-dark); }
.preview-main { padding: 11px; }
.preview-banner { display: grid; gap: 3px; padding: 16px; border-radius: 8px; background: radial-gradient(ellipse at right bottom, #89d8f4, transparent 60%), linear-gradient(125deg, #1859c5, #449beb); color: #fff; }
.preview-banner strong { font-size: 21px; line-height: 1.25; }
.preview-banner small, .preview-banner span { font-size: 10px; }
.preview-main h4 { font-size: 12px; margin: 13px 0 4px; }
.learning-row { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-top: 1px solid #eef3fa; }
.learning-row .tile-icon { width: 26px; height: 26px; border-radius: 6px; font-size: 13px; }
.learning-row b, .learning-row small { display: block; font-size: 10px; }
.learning-row small { color: var(--muted); font-size: 9px; }
.step-tag { margin-left: auto; padding: 2px 5px; color: var(--blue-dark); background: #edf5ff; border-radius: 4px; white-space: nowrap; font-size: 9px; }
.coach-conversation { display: grid; gap: 18px; padding: 21px; }
.chat-row { display: flex; align-items: center; gap: 9px; }
.chat-row.from-me { justify-content: flex-end; }
.chat-row .tile-icon { width: 33px; height: 33px; border-radius: 10px; font-size: 13px; }
.chat-row p { padding: 9px 12px; border-radius: 8px; background: #f0f5fd; font-size: 13px; }
.chat-row.from-me p { background: #e1efff; }

.courses { background: #f7fbff; border-block: 1px solid var(--line); }
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.course-card {
  padding: clamp(16px, 2vw, 24px);
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--white);
}
.course-card h3 { font-size: 17px; }
.course-card p { margin-top: 5px; color: var(--blue-dark); font-size: 13px; }
.course-card ul { margin: 14px 0 0; padding: 12px 0 0 1.1em; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.course-card li + li { margin-top: 6px; }
.course-card li::marker { color: var(--blue); }
.course-footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-top: 24px; }
.course-footer p { color: var(--muted); font-size: 13px; }

.loop-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1fr); gap: 39px; align-items: start; }
.loop-tabs button { align-items: flex-start; padding: 19px 22px; min-height: 88px; background: #f9fbff; border-left-width: 3px; }
.loop-tabs button.active { background: #edf5ff; border-color: #c4dbfb; border-left-color: var(--blue); }
.loop-character { display: grid; place-items: center; width: 47px; height: 47px; flex: 0 0 auto; border: 1px solid #d5e5fb; border-radius: 13px; background: #edf5ff; color: var(--blue-dark); font-size: 22px; }
.loop-tabs button.active .loop-character { background: var(--blue); border-color: var(--blue); color: #fff; }
.loop-tabs b, .loop-tabs small, .loop-tab-detail { display: block; }
.loop-tabs b { font-size: 16px; margin-top: 1px; }
.loop-tabs small { font-size: 13px; color: var(--muted); margin-top: 2px; }
.loop-tabs button i { margin-top: 5px; }
.loop-tab-detail { display: none; margin-top: 13px; font-size: 14px; color: var(--muted); line-height: 1.8; }
.loop-tabs button.active .loop-tab-detail { display: block; }
.loop-demo { border: 1px solid #ccdef6; border-radius: 20px; overflow: hidden; box-shadow: var(--soft-shadow); background: #f6faff; }
.demo-top { padding: 16px 21px; color: var(--ink); font-size: 14px; background: #fff; border-bottom: 1px solid var(--line); }
.demo-body { padding: 20px 22px; }
.demo-intro { display: flex; align-items: center; gap: 13px; margin: -20px -22px 20px; padding: 19px 22px; background: linear-gradient(135deg, #ebf4ff, #e7f7fd); border-bottom: 1px solid #dbe9f9; }
.demo-intro > div > small { color: var(--blue-dark); font-size: 11px; }
.demo-intro h3 { font-size: 19px; line-height: 1.4; }
.demo-intro p { color: var(--muted); font-size: 12px; margin-top: 3px; }
.demo-client { display: flex; align-items: center; gap: 10px; }
.demo-client strong, .demo-client small { display: block; font-size: 13px; }
.demo-client small { color: var(--muted); font-size: 11px; }
.demo-body blockquote { background: #fff; border: 1px solid var(--line); border-radius: 11px; padding: 13px; margin-top: 12px; font-size: 14px; }
.demo-question { color: var(--muted); font-size: 12px; margin: 12px 0 8px; }
.practice-options { display: grid; gap: 8px; }
.practice-options button { display: flex; align-items: center; gap: 9px; text-align: left; border: 1px solid var(--line); border-radius: 8px; padding: 10px 11px; background: #fff; font-size: 13px; }
.practice-options button > span { display: grid; place-items: center; flex: 0 0 auto; width: 19px; height: 19px; border: 1px solid var(--line); border-radius: 4px; font-size: 10px; color: var(--blue-dark); }
.practice-options button > i { margin-left: auto; font-style: normal; color: var(--blue-dark); }
.practice-options button:hover, .practice-options button.selected { border-color: #94bdf0; background: #e9f3ff; }
.practice-feedback, .state-demo-insight { background: #e7f2ff; padding: 12px; margin-top: 11px; border-radius: 8px; color: var(--muted); font-size: 13px; }
.practice-feedback strong { display: block; color: var(--blue-dark); margin-bottom: 4px; }
.practice-feedback button { border: 0; padding: 0; margin-top: 6px; background: none; color: var(--blue-dark); text-decoration: underline; }
.demo-note { margin-top: 12px; color: var(--muted); font-size: 11px; }
.state-demo-title { font-size: 21px; }
.state-demo-subtitle { color: var(--muted); font-size: 13px; margin-top: 6px; }
.state-demo-item { display: flex; align-items: center; gap: 11px; padding: 12px; margin-top: 11px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.state-demo-item > span { width: 31px; height: 31px; display: grid; place-items: center; background: #eaf3ff; border-radius: 7px; color: var(--blue-dark); font-size: 11px; }
.state-demo-item b { font-size: 14px; }
.state-demo-item p { color: var(--muted); font-size: 12px; }

.journey { background: #f2f8ff; }
.journey-flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 11px; list-style: none; padding: 0; }
.journey-flow li { border: 1px solid var(--line); border-radius: 15px; background: #fff; padding: 19px; }
.journey-flow h3 { margin: 13px 0 6px; font-size: 16px; }
.journey-flow p { color: var(--muted); font-size: 12px; }
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 65px; }
.about h2 { margin-top: 16px; }
.about-copy p { max-width: 38ch; line-height: 1.85; }
.about-copy .text-link { display: inline-block; margin-top: 17px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 17px 0; font-size: 14px; font-weight: 600; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--blue-dark); font-size: 18px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { color: var(--muted); font-size: 14px; margin: -2px 0 17px; }
.contact-section { padding: 76px 0; background: radial-gradient(ellipse at 70% 55%, #dff4fe, transparent 60%), #eaf3ff; text-align: center; }
.contact-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 23px; }
.footer { background: #f7faff; padding: 32px 0 21px; border-top: 1px solid var(--line); }
.footer-top, .footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.footer nav { display: flex; gap: 19px; flex-wrap: wrap; font-size: 13px; }
.footer nav a:hover { color: var(--blue-dark); }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 13px; margin-top: 20px; font-size: 11px; color: var(--muted); }

.floating-tools { position: fixed; right: 17px; bottom: 42px; z-index: 20; padding: 4px; border: 1px solid var(--line); border-radius: 24px; background: #fff; box-shadow: var(--soft-shadow); }
.floating-tools :is(a, button) { display: grid; place-items: center; border: 0; background: none; border-radius: 20px; color: var(--blue-dark); width: 41px; min-height: 41px; }
.floating-tools .floating-consult { background: #edf5ff; font-size: 10px; line-height: 1; padding: 4px; }
.floating-consult span, .back-top { font-size: 19px; }
.floating-tools :is(a, button):hover { background: #dcecff; }
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 80; transform: translateX(-50%); width: max-content; max-width: calc(100% - 34px); text-align: center; padding: 10px 15px; border-radius: 8px; background: var(--navy); color: #fff; font-size: 13px; }

@media (max-width: 1060px) {
  .container { width: calc(100% - 64px); }
  .header-inner { width: calc(100% - 44px); gap: 20px; }
  .nav { gap: 14px; }
  .nav a { font-size: 12px; }
  .hero-inner { gap: 29px; }
  .hero h1 { font-size: clamp(36px, 4.7vw, 53px); }
  .workbench { padding: 18px; }
  .workbench-icon { width: 65px; height: 65px; font-size: 38px; }
  .waveform { display: none; }
  .scenario-layout { grid-template-columns: 175px minmax(0, 1fr); gap: 16px; }
  .product-panel, .loop-layout { gap: 22px; }
  .product-panel { padding: 22px; }
  .section { padding-block: 78px; }
}

@media (max-width: 920px) {
  html { scroll-padding-top: 69px; }
  .header-inner { min-height: 68px; gap: 10px; }
  .header-cta { min-height: 36px; padding: 6px 10px; font-size: 12px; gap: 7px; }
  .menu-toggle { display: block; margin-right: -7px; }
  .nav { display: none; }
  .nav.open { position: absolute; left: 0; right: 0; top: 100%; display: grid; gap: 0; padding: 8px 22px 15px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--soft-shadow); }
  .nav a { padding: 11px 0; }
  .nav a.current::after { display: none; }
}

@media (max-width: 860px) {
  .hero { padding-top: 55px; }
  .hero-actions .button { min-height: 44px; padding-inline: 12px; gap: 9px; font-size: 12px; }
  .hero-label { font-size: 11px; }
  .hero-copy > p { font-size: 13px; }
  .workbench-task, .workbench-tip { padding: 10px; }
  .product-panel { grid-template-columns: 1fr; }
  .product-copy p { max-width: 60ch; }
  .course-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .journey-flow { grid-template-columns: repeat(3, 1fr); }
  .floating-tools { right: 9px; bottom: 14px; }
}

@media (max-width: 660px) {
  .container { width: calc(100% - 36px); }
  .header-inner { width: calc(100% - 32px); }
  .brand { gap: 6px; }
  .brand-symbol { width: 23px; height: 23px; }
  .brand-symbol i { width: 9px; height: 9px; }
  .brand-word { font-size: 19px; }
  .brand-word > span { font-size: 5px; }
  .brand-title { font-size: 11px; padding-left: 7px; }
  .hero { padding: 43px 0 38px; }
  .hero-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-copy { padding-bottom: 0; }
  .hero h1 { margin: 19px 0 17px; font-size: clamp(34px, 8.7vw, 55px); }
  .hero-actions { margin-top: 18px; }
  .hero-traits { margin-top: 13px; font-size: 11px; }
  .workbench { padding: 15px; border-radius: 18px; }
  .workbench-intro { padding-block: 15px; gap: 12px; }
  .workbench-icon { width: 55px; height: 55px; font-size: 31px; border-radius: 15px; }
  .workbench-caption { margin-top: 10px; }
  .workbench-footer { flex-wrap: wrap; font-size: 10px; gap: 7px; }
  .workbench-footer a { margin-left: 0; }
  .quick-help { margin-top: 23px; padding: 14px; border-radius: 14px; }
  .quick-heading h2 { font-size: 17px; }
  .quick-caption { display: none; }
  .quick-heading .tile-icon { width: 31px; height: 31px; font-size: 15px; }
  .section { padding-block: 55px; }
  .course-grid { grid-template-columns: minmax(0, 1fr); }
  .section-heading { margin: 10px 0 23px; }
  .section-heading p, .about-copy p, .contact-inner > p { font-size: 13px; margin-top: 12px; }
  .scenario-layout, .loop-layout, .faq-grid { grid-template-columns: 1fr; gap: 16px; }
  .scenario-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
  .scenario-tabs button { min-height: 47px; gap: 6px; padding: 6px 8px; border-radius: 9px; font-size: 12px; }
  .scenario-tabs .tile-icon { width: 28px; height: 28px; border-radius: 8px; font-size: 14px; }
  .scenario-panel, .product-panel { padding: 15px; border-radius: 15px; }
  .scenario-content p, .product-copy p { font-size: 13px; }
  .roadmap-steps { gap: 3px; margin: 18px 0; }
  .roadmap-steps::before { top: 16px; }
  .roadmap-steps span { width: 33px; height: 33px; border-radius: 9px; }
  .roadmap-steps b { font-size: 11px; }
  .roadmap-steps small { font-size: 9px; }
  .scenario-cards { grid-template-columns: 1fr; gap: 6px; }
  .scenario-cards article { padding: 10px; }
  .product-tabs { gap: 6px; margin-bottom: 13px; }
  .product-tabs button { padding: 7px; min-height: 62px; gap: 6px; border-radius: 9px; }
  .product-tabs b { font-size: 12px; }
  .product-tabs small { font-size: 9px; }
  .product-tabs .tile-icon { width: 30px; height: 30px; font-size: 15px; border-radius: 8px; }
  .product-preview { padding: 8px; }
  .preview-dashboard { grid-template-columns: minmax(0, 1fr); }
  .preview-sidebar { display: none; }
  .product-features { font-size: 12px; margin: 16px 0; }
  .loop-tabs { gap: 6px; }
  .loop-tabs button { min-height: 60px; padding: 9px 11px; gap: 8px; }
  .loop-character { width: 38px; height: 38px; font-size: 17px; border-radius: 10px; }
  .loop-tabs b { font-size: 14px; }
  .loop-tabs small, .loop-tab-detail { font-size: 12px; }
  .loop-tab-detail { margin-top: 6px; }
  .loop-demo { border-radius: 14px; }
  .demo-top, .demo-body { padding: 12px; }
  .demo-intro { margin: -12px -12px 12px; padding: 12px; }
  .demo-intro h3 { font-size: 16px; }
  .practice-options button { font-size: 12px; }
  .journey-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .journey-flow li { padding: 12px; }
  .journey-flow li:last-child { grid-column: 1 / -1; }
  .faq-grid { gap: 23px; }
  .contact-section { padding-block: 49px; }
  .contact-actions .button { padding-inline: 11px; gap: 6px; font-size: 12px; }
  .footer-top { align-items: flex-start; flex-direction: column; }
  .footer nav { font-size: 11px; }
  .floating-tools :is(a, button) { width: 33px; min-height: 33px; }
}

@media (max-width: 360px) {
  .header-cta { font-size: 11px; }
  .brand-title { font-size: 10px; }
  .hero h1 { font-size: 32px; }
  .workbench-footer a { margin-left: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}