:root {
  --cream: #fbf7f0; --paper: #fffdf8; --sage: #4f8e70; --sage-dark: #285643;
  --coral: #c66d4b; --sky: #36779c; --honey: #d1a52f; --ink: #213229;
  --muted: #647168; --line: rgba(40, 86, 67, 0.16); --shadow: 0 16px 44px rgba(40, 86, 67, 0.1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--cream); color: var(--ink); font-family: "Noto Sans SC", system-ui, sans-serif; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-weight: 800; line-height: 1.15; }
h2 { margin-bottom: 14px; font-size: clamp(30px, 4vw, 48px); }
h3 { line-height: 1.3; }
.site-header { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 84px; padding: 8px clamp(18px, 4vw, 56px); border-bottom: 1px solid var(--line); background: rgba(251, 247, 240, 0.92); backdrop-filter: blur(16px); }
.brand { display: inline-flex; flex: 0 0 auto; align-items: center; }
.brand img { display: block; width: 150px; height: 68px; object-fit: contain; object-position: left center; }
nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 4px; }
nav a { padding: 8px 11px; color: var(--sage-dark); font-size: 14px; font-weight: 700; }
nav a:hover { color: var(--coral); }
.hero { position: relative; display: flex; min-height: min(720px, calc(100vh - 84px)); align-items: center; overflow: hidden; padding: clamp(40px, 6vw, 80px) clamp(18px, 5vw, 72px); }
.hero::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg, rgba(251,247,240,.98) 0%, rgba(251,247,240,.9) 38%, rgba(251,247,240,.12) 72%); }
.hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-copy { position: relative; z-index: 1; width: min(680px, 100%); }
.eyebrow, .section-kicker { display: inline-block; color: var(--coral); font-size: 14px; font-weight: 800; letter-spacing: 0; }
h1 { max-width: 11em; margin: 14px 0 22px; font-size: clamp(40px, 5.8vw, 72px); }
.hero-copy > p { max-width: 630px; margin-bottom: 22px; color: #526259; font-size: 19px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-bottom: 30px; }
.hero-points span { position: relative; padding-left: 18px; font-weight: 700; }
.hero-points span::before { position: absolute; left: 0; top: .68em; width: 8px; height: 8px; border-radius: 50%; background: var(--sage); content: ""; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 22px; border-radius: 6px; font-weight: 800; }
.button.primary { background: var(--sage-dark); color: white; }
.button.primary:hover { background: #1f4938; }
.product-value { background: var(--paper); }
.product-value > .section-head:first-child { max-width: 940px; margin-bottom: 30px; }
.product-positioning { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--sage-dark); color: white; }
.product-positioning span { padding: 18px 24px; border-right: 1px solid rgba(255,255,255,.2); text-align: center; font-weight: 700; }
.product-positioning span:last-child { border-right: 0; }
.section { padding: clamp(56px, 7vw, 96px) clamp(18px, 5vw, 72px); }
.section-head { max-width: 820px; margin-bottom: 34px; }
.section-head.compact { max-width: 760px; }
.section-head p { color: var(--muted); font-size: 17px; }
.value-core { margin-top: 54px; padding-top: 48px; border-top: 1px solid var(--line); }
.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.advantage-grid article { display: flex; min-height: 320px; flex-direction: column; padding: 24px; border-top: 4px solid var(--sage); background: var(--paper); }
.advantage-grid article > span { color: var(--coral); font-family: "Baloo 2", cursive; font-size: 22px; font-weight: 700; }
.advantage-grid h3 { margin: 22px 0 10px; font-size: 21px; }
.advantage-grid p { margin-bottom: 18px; color: var(--muted); }
.advantage-grid blockquote { margin-top: auto; padding: 13px 14px; font-size: 15px; }
.difference { background: var(--paper); }
.difference-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.difference-grid article { min-height: 350px; padding: 28px; border-top: 4px solid var(--sage); background: var(--cream); }
.benefit-icon { display: grid; width: 48px; height: 48px; margin-bottom: 22px; place-items: center; border-radius: 50%; background: var(--sage-dark); color: white; font-size: 20px; font-weight: 800; }
.difference-grid h3 { margin-bottom: 10px; font-size: 24px; }
.difference-grid p { margin-bottom: 0; color: var(--muted); }
.difference-grid .scene-label { margin: 14px 0 5px; color: var(--coral); font-size: 13px; font-weight: 800; }
.difference-grid .story-line { margin: 0 0 10px; padding: 12px 14px; font-size: 16px; }
.difference-grid .example-result { margin-top: 16px; }
.difference-grid .example-result strong { color: var(--sage-dark); }
.parent-answer { display: grid; grid-template-columns: .42fr 1.58fr; gap: 24px; margin-top: 18px; padding: 24px 28px; background: var(--sage-dark); color: white; }
.parent-answer strong { color: #f2d26f; font-size: 18px; }
.parent-answer p { margin: 0; color: rgba(255,255,255,.86); }
.system { background: #f3eee5; }
.series-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.series-grid article { display: flex; min-height: 270px; flex-direction: column; padding: 24px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); box-shadow: var(--shadow); }
.series-grid article > span { color: var(--coral); font-family: "Baloo 2", cursive; font-size: 22px; font-weight: 700; }
.series-grid h3 { margin: 26px 0 10px; font-family: "Baloo 2", cursive; font-size: 27px; }
.series-grid b { display: block; margin-bottom: 12px; color: var(--coral); font-size: 13px; }
.series-grid p { margin: 0; color: var(--muted); }
.series-grid small { display: block; margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); color: var(--sage-dark); font-size: 13px; font-weight: 700; }
.series-sample-grid { display: grid; gap: 18px; }
.series-sample { display: grid; grid-template-columns: minmax(260px, .78fr) minmax(0, 1.22fr); overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); box-shadow: var(--shadow); }
.series-copy { display: flex; min-width: 0; flex-direction: column; padding: 28px; border-right: 1px solid var(--line); }
.series-copy > span { color: var(--coral); font-family: "Baloo 2", cursive; font-size: 22px; font-weight: 700; }
.series-copy h3 { margin: 20px 0 8px; font-family: "Baloo 2", cursive; font-size: 29px; }
.series-copy b { display: block; margin-bottom: 16px; color: var(--coral); font-size: 13px; }
.series-copy p { color: var(--muted); }
.series-copy small { display: block; margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); color: var(--sage-dark); font-size: 13px; font-weight: 700; }
.series-listen { min-width: 0; padding: 28px; background: #fffdf8; }
.series-listen .sample-heading h4 { margin: 5px 0 16px; font-family: "Baloo 2", cursive; font-size: 27px; line-height: 1.2; }
.series-listen .transcript h5 { margin: 0 0 8px; color: var(--sky); font-size: 15px; }
.levels { background: var(--paper); }
.level-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.level-grid article { min-height: 240px; padding: 28px; border: 1px solid var(--line); border-top: 5px solid var(--honey); border-radius: 8px; background: var(--cream); }
.level-grid article strong { display: block; color: var(--sage-dark); font-family: "Baloo 2", cursive; font-size: 30px; }
.level-grid article span { color: var(--coral); font-size: 14px; font-weight: 700; }
.level-grid article p { margin: 52px 0 0; color: var(--ink); font-size: 19px; font-weight: 700; }
.level-grid article small { display: block; margin-top: 12px; color: var(--muted); font-size: 13px; }
.method { background: #eaf3ed; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(40,86,67,.18); }
.steps article { display: flex; min-height: 245px; flex-direction: column; padding: 24px; background: var(--paper); }
.steps span { color: var(--sage); font-family: "Baloo 2", cursive; font-size: 30px; font-weight: 700; }
.steps h3 { margin: 20px 0 8px; font-size: 20px; }
.steps p { margin: 0; color: var(--muted); }
.steps small { display: block; margin-top: 12px; color: var(--coral); font-size: 13px; font-weight: 700; }
.segment-play { display: inline-flex; width: 100%; min-height: 42px; align-items: center; justify-content: center; gap: 8px; margin-top: auto; padding: 8px 12px; border: 1px solid var(--sage); border-radius: 6px; background: transparent; color: var(--sage-dark); font: inherit; font-size: 14px; font-weight: 800; cursor: pointer; }
.segment-play:hover, .segment-play:focus-visible { background: #eaf3ed; outline: none; }
.segment-play.is-playing { border-color: var(--sage-dark); background: var(--sage-dark); color: white; }
.segment-play span { color: inherit; font-family: sans-serif; font-size: 12px; }
.method-inside { margin-top: 68px; }
.structure-audio { display: grid; grid-template-columns: minmax(220px, .7fr) minmax(300px, 1.3fr); align-items: center; gap: 30px; margin-top: 18px; padding: 22px 24px; border: 1px solid var(--line); background: var(--paper); }
.structure-audio span { display: block; color: var(--coral); font-size: 13px; font-weight: 800; }
.structure-audio strong { display: block; margin-top: 3px; font-family: "Baloo 2", cursive; font-size: 22px; }
.structure-audio p { margin: 3px 0 0; color: var(--muted); font-size: 14px; }
.cn-audio-note { display: flex; gap: 22px; margin-top: 18px; padding: 20px 24px; background: var(--sage-dark); color: white; }
.cn-audio-note strong { flex: 0 0 auto; color: #f2d26f; }
.cn-audio-note span { color: rgba(255,255,255,.86); }
.characters { background: var(--paper); }
.character-card-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.character-card-grid article { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: var(--cream); box-shadow: var(--shadow); }
.character-card-grid img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; }
.character-card-grid article > div { padding: 18px; }
.character-card-grid strong { display: block; font-family: "Baloo 2", cursive; font-size: 23px; line-height: 1.15; }
.character-card-grid small { display: block; margin-top: 4px; color: var(--coral); font-size: 13px; font-weight: 700; }
.character-card-grid p { margin: 18px 0 0; padding-top: 14px; border-top: 1px solid var(--line); color: var(--sage-dark); font-size: 14px; font-weight: 700; }
.assurance { background: #f3eee5; }
.assurance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.assurance-grid article { min-height: 180px; padding: 26px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.assurance-grid strong { display: block; color: var(--sage-dark); font-family: "Baloo 2", "Noto Sans SC", sans-serif; font-size: 24px; line-height: 1.25; }
.assurance-grid p { margin: 28px 0 0; color: var(--muted); }
.listening-scenes { background: var(--paper); }
.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.scene-grid article { min-height: 150px; padding: 24px; border-right: 1px solid var(--line); }
.scene-grid article:last-child { border-right: 0; }
.scene-grid strong { display: block; margin-bottom: 14px; color: var(--coral); font-size: 20px; }
.scene-grid span { color: var(--muted); }
.why-listening { display: grid; grid-template-columns: 220px 1fr; gap: 24px; margin-top: 22px; padding: 24px 28px; background: #eaf3ed; }
.why-listening strong { color: var(--sage-dark); font-size: 18px; }
.why-listening p { margin: 0; color: var(--muted); }
.samples { background: #f3eee5; }
.sample-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.sample-card { display: flex; flex-direction: column; gap: 16px; min-height: 370px; padding: 24px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); box-shadow: var(--shadow); }
.sample-heading span { color: var(--coral); font-size: 13px; font-weight: 800; }
.sample-heading h3 { margin: 6px 0 0; font-family: "Baloo 2", cursive; font-size: 28px; }
.sample-focus { margin-bottom: 0; color: var(--muted); }
.sample-focus strong { margin-right: 12px; color: var(--sage-dark); }
blockquote { margin: 0; padding: 16px 18px; border-left: 4px solid var(--honey); background: #faf4e6; font-size: 17px; font-weight: 700; }
audio { width: 100%; accent-color: var(--sage); }
.transcript { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); }
.transcript h4 { margin: 0 0 8px; color: var(--sky); font-size: 15px; }
.transcript div { padding-top: 0; }
.transcript p { margin: 8px 0; color: var(--muted); font-size: 14px; }
.transcript strong { color: var(--ink); }
.catalog { background: var(--paper); }
.catalog-groups { display: grid; gap: 22px; }
.catalog-group { display: grid; grid-template-columns: 260px 1fr; gap: 28px; padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--cream); }
.catalog-group > div span { color: var(--coral); font-family: "Baloo 2", cursive; font-size: 24px; font-weight: 700; }
.catalog-group > div h3 { margin: 16px 0 4px; font-family: "Baloo 2", cursive; font-size: 29px; }
.catalog-group > div p { color: var(--muted); }
.catalog-group ol { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 28px; margin: 0; padding-left: 28px; }
.catalog-group li { min-width: 0; padding: 8px 0 9px 4px; border-bottom: 1px solid var(--line); }
.catalog-group li::marker { color: var(--coral); font-size: 13px; font-weight: 800; }
.catalog-group li strong { display: block; overflow-wrap: anywhere; font-size: 14px; line-height: 1.4; }
.catalog-group li small { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; }
footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding: 26px clamp(18px, 5vw, 72px); background: var(--sage-dark); color: white; }
footer strong { font-family: "Baloo 2", cursive; }
footer span { color: rgba(255,255,255,.75); }
@media (max-width: 980px) {
  .advantage-grid, .series-grid, .steps, .assurance-grid, .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .character-card-grid { grid-template-columns: repeat(3, 1fr); }
  .scene-grid article:nth-child(2) { border-right: 0; }
  .scene-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .catalog-group { grid-template-columns: 1fr; }
  .catalog-group ol { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .site-header { position: static; align-items: flex-start; flex-direction: column; gap: 8px; }
  nav { justify-content: flex-start; }
  nav a { padding-left: 0; padding-right: 16px; }
  .brand img { width: 130px; height: 58px; }
  .hero { min-height: 650px; align-items: flex-start; padding-top: 48px; }
  .hero::after { background: linear-gradient(180deg, rgba(251,247,240,.99) 0%, rgba(251,247,240,.9) 56%, rgba(251,247,240,.18) 100%); }
  .hero-copy > p { font-size: 17px; }
  .product-positioning { grid-template-columns: 1fr; padding: 10px 18px; }
  .product-positioning span { padding: 10px 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); text-align: left; }
  .product-positioning span:last-child { border-bottom: 0; }
  .advantage-grid, .difference-grid, .series-grid, .level-grid, .steps, .sample-grid, .assurance-grid, .scene-grid { grid-template-columns: 1fr; }
  .advantage-grid article, .difference-grid article, .series-grid article, .steps article, .assurance-grid article, .scene-grid article { min-height: 0; }
  .parent-answer { grid-template-columns: 1fr; gap: 8px; }
  .level-grid article { min-height: 0; }
  .level-grid article p { margin-top: 28px; }
  .character-card-grid { grid-template-columns: repeat(2, 1fr); }
  .series-sample { grid-template-columns: 1fr; }
  .series-copy { border-right: 0; border-bottom: 1px solid var(--line); }
  .series-copy, .series-listen { padding: 22px 18px; }
  .character-card-grid article > div { padding: 16px; }
  .cn-audio-note { flex-direction: column; gap: 6px; }
  .structure-audio { grid-template-columns: 1fr; gap: 16px; padding: 20px; }
  .why-listening { grid-template-columns: 1fr; gap: 8px; padding: 20px; }
  .scene-grid article, .scene-grid article:nth-child(2) { border-right: 0; border-bottom: 1px solid var(--line); }
  .scene-grid article:last-child { border-bottom: 0; }
  .catalog-group { padding: 22px 18px; }
  .catalog-group ol { grid-template-columns: 1fr; }
}