:root {
  --ink: #10241b;
  --ink-2: #43564c;
  --paper: #f4f1e8;
  --paper-2: #e5e9df;
  --white: #fffdf8;
  --night: #07110c;
  --night-2: #10251a;
  --green: #2ae887;
  --green-deep: #0ba861;
  --brand: #1f6f4a;
  --sun: #f4c24a;
  --line: rgba(16,36,27,.13);
  --shadow: 0 30px 80px rgba(6,22,14,.13);
  --display: "Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;
  --latin: "Plus Jakarta Sans",sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; color: var(--ink); background: var(--paper); font-family: var(--display); line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img,svg { display: block; max-width: 100%; }
button,input,textarea,select { font: inherit; }
button { color: inherit; }
:focus-visible { outline: 3px solid var(--sun); outline-offset: 4px; }
::selection { color: var(--night); background: var(--green); }

.shell { width: min(1180px,calc(100% - 40px)); margin: 0 auto; }
.site-header { height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 28px; position: relative; z-index: 20; border-bottom: 1px solid var(--line); }
.site-header.dark { position: absolute; inset: 0 0 auto; color: white; border-color: rgba(255,255,255,.11); }
.yt-brand { display: inline-flex; align-items: center; gap: 10px; font: 800 17px var(--latin); letter-spacing: -.04em; }
.yt-mark { width: 38px; height: 38px; display: grid; place-items: center; position: relative; border-radius: 11px; color: white; background: linear-gradient(150deg,#25845a,#1a5e3e); box-shadow: 0 8px 22px rgba(31,111,74,.25); font-size: 13px; }
.yt-mark::after { content: ""; width: 5px; height: 5px; position: absolute; right: 8px; top: 7px; border-radius: 50%; background: var(--sun); }
.yt-word b { color: currentColor; }
.yt-word i { color: var(--green-deep); font-style: normal; }
.dark .yt-word i { color: #cfe8db; }
.site-nav { display: flex; align-items: center; gap: 23px; color: var(--ink-2); font-size: .85rem; font-weight: 750; }
.dark .site-nav { color: rgba(255,255,255,.72); }
.site-nav a:hover { color: var(--green-deep); }
.dark .site-nav a:hover { color: white; }
.nav-cta,.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 0 20px; border: 1px solid transparent; border-radius: 999px; font-weight: 850; cursor: pointer; transition: transform .2s,box-shadow .2s,background .2s; }
.nav-cta { min-height: 42px; color: var(--night); background: var(--green); }
.button:hover,.nav-cta:hover { transform: translateY(-2px); }
.button-green { color: var(--night); background: var(--green); box-shadow: 0 13px 34px rgba(42,232,135,.22); }
.button-dark { color: white; background: var(--night); }
.button-line { border-color: var(--line); background: rgba(255,255,255,.42); }

.page-hero { min-height: 620px; display: grid; align-items: end; padding: 155px 0 90px; position: relative; overflow: hidden; color: white; background: radial-gradient(circle at 78% 24%,rgba(42,232,135,.15),transparent 28%),linear-gradient(145deg,#07110c,#10251a); }
.page-hero::after { content: ""; width: 580px; height: 580px; position: absolute; right: -180px; top: -270px; border: 1px solid rgba(42,232,135,.17); border-radius: 50%; box-shadow: 0 0 0 75px rgba(42,232,135,.025),0 0 0 150px rgba(42,232,135,.016); }
.page-hero .shell { position: relative; z-index: 1; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; color: var(--green-deep); font-size: .73rem; font-weight: 900; letter-spacing: .13em; }
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 5px color-mix(in srgb,currentColor 14%,transparent); }
.page-hero .eyebrow,.dark-section .eyebrow { color: var(--green); }
.page-title { max-width: 990px; margin: 0; font-size: clamp(3.2rem,7.4vw,6.6rem); line-height: 1.02; letter-spacing: -.07em; }
.page-title span { display: block; white-space: nowrap; }
.page-title span { animation: title-rise .72s cubic-bezier(.2,.7,.2,1) both; }
.page-title span:nth-child(2) { animation-delay: .09s; }
.page-lead { max-width: 720px; margin: 25px 0 0; color: rgba(255,255,255,.62); font-size: clamp(1rem,1.6vw,1.2rem); }
.page-lead,.hero-actions,.hero-chips { animation: title-rise .7s .18s cubic-bezier(.2,.7,.2,1) both; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.hero-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.hero-chips span { padding: 7px 11px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; color: rgba(255,255,255,.68); font-size: .68rem; font-weight: 750; }

.section { padding: 106px 0; }
.section.soft { background: var(--paper-2); }
.dark-section { color: white; background: var(--night); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 50px; }
.section-title { max-width: 830px; margin: 0; font-size: clamp(2.5rem,5vw,5rem); line-height: 1.05; letter-spacing: -.06em; }
.section-title span { display: block; }
.section-lead { max-width: 520px; margin: 0; color: var(--ink-2); font-size: 1.05rem; }
.dark-section .section-lead { color: rgba(255,255,255,.56); }
.text-link { display: inline-flex; align-items: center; gap: 8px; font-weight: 850; border-bottom: 1px solid currentColor; }

.card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 46px; }
.card { min-height: 230px; padding: 28px; border: 1px solid var(--line); border-radius: 22px; background: rgba(255,255,255,.52); }
.card,.price-card,.article-card,.flow-step { transition: transform .25s ease,border-color .25s ease,box-shadow .25s ease; }
.card:hover,.price-card:hover,.article-card:hover { transform: translateY(-5px); border-color: rgba(11,168,97,.34); box-shadow: 0 18px 40px rgba(6,22,14,.08); }
.card-index { display: inline-grid; place-items: center; min-width: 34px; height: 34px; padding: 0 8px; border-radius: 10px; color: var(--green-deep); background: rgba(42,232,135,.13); font: 800 .72rem var(--latin); }
.card h3 { margin: 27px 0 8px; font-size: 1.25rem; letter-spacing: -.035em; }
.card p { margin: 0; color: var(--ink-2); font-size: .88rem; }
.dark-section .card { border-color: rgba(255,255,255,.12); background: rgba(255,255,255,.035); }
.dark-section .card p { color: rgba(255,255,255,.52); }

.split { display: grid; grid-template-columns: .78fr 1.22fr; gap: 78px; align-items: start; }
.sticky-copy { position: sticky; top: 90px; }
.feature-list { border-top: 1px solid var(--line); }
.feature-row { display: grid; grid-template-columns: 70px 230px 1fr; gap: 22px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.feature-row .num { color: var(--green-deep); font: 800 .72rem var(--latin); }
.feature-row h3 { margin: 0; font-size: 1.15rem; }
.feature-row p { margin: 0; color: var(--ink-2); font-size: .88rem; }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.tag-row span { padding: 6px 9px; border-radius: 7px; color: #0a7043; background: rgba(42,232,135,.12); font-size: .66rem; font-weight: 750; }

.flow { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; margin-top: 48px; overflow: hidden; border: 1px solid var(--line); border-radius: 24px; background: var(--line); }
.flow-step { min-height: 250px; padding: 26px; background: var(--white); }
.flow-step b { color: var(--green-deep); font: 800 .72rem var(--latin); }
.flow-step h3 { margin: 45px 0 8px; font-size: 1.15rem; }
.flow-step p { margin: 0; color: var(--ink-2); font-size: .82rem; }

.product-theatre { display: grid; grid-template-columns: 330px minmax(0,1fr); gap: 18px; margin-top: 48px; padding: 18px; border: 1px solid var(--line); border-radius: 30px; background: #e7e9e2; box-shadow: var(--shadow); }
.theatre-copy { min-height: 520px; padding: 34px 28px; display: flex; flex-direction: column; color: white; border-radius: 22px; background: var(--night-2); }
.theatre-copy h3 { margin: 10px 0 12px; font-size: 2rem; line-height: 1.12; letter-spacing: -.05em; }
.theatre-copy p { margin: 0; color: rgba(255,255,255,.55); font-size: .88rem; }
.theatre-copy .tag-row { margin-top: 22px; }
.theatre-copy .text-link { margin-top: auto; align-self: start; }
.theatre-screen { min-height: 520px; overflow: hidden; position: relative; border: 1px solid #d5dbd3; border-radius: 22px; background: #fbfbf7; }
.screen-bar { height: 54px; display: flex; align-items: center; gap: 7px; padding: 0 18px; border-bottom: 1px solid #e3e7e0; background: white; }
.screen-bar i { width: 8px; height: 8px; border-radius: 50%; background: #d5dbd3; }
.screen-bar span { margin-left: auto; color: #7a867e; font-size: .66rem; font-weight: 800; }
.screen-body { display: grid; grid-template-columns: 125px 1fr; height: 466px; }
.screen-side { padding: 22px 13px; color: rgba(255,255,255,.64); background: #1f6f4a; font-size: .65rem; }
.screen-side b { display: block; margin-bottom: 20px; color: white; }
.screen-side span { display: block; margin: 7px 0; padding: 7px; border-radius: 7px; }
.screen-side span.active { color: #0a5635; background: #dcf2e5; }
.screen-main { padding: 28px; overflow: hidden; }
.screen-main h4 { margin: 0 0 22px; font-size: 1rem; }
.demo-table { min-width: 630px; border: 1px solid #e3e7e0; border-radius: 12px; overflow: hidden; }
.demo-row { display: grid; grid-template-columns: 1.3fr repeat(4,1fr); }
.demo-row span { min-height: 52px; padding: 12px; border-right: 1px solid #eef1ec; border-bottom: 1px solid #eef1ec; color: #5d6b63; font-size: .65rem; }
.demo-row.head span { min-height: 38px; color: #77837b; background: #f0f3ee; font-weight: 800; }
.demo-pill { display: inline-block; padding: 5px 7px; border-radius: 6px; color: #08623a; background: #cdf1dc; font-weight: 750; }

.quote-band { padding: 44px; border-radius: 28px; color: white; background: var(--night-2); }
.quote-band h2 { max-width: 920px; margin: 0; font-size: clamp(2.1rem,4.3vw,4.4rem); line-height: 1.12; letter-spacing: -.055em; }
.quote-band p { max-width: 690px; margin: 22px 0 0; color: rgba(255,255,255,.55); }

.price-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 46px; }
.price-card { min-height: 390px; display: flex; flex-direction: column; padding: 30px; border: 1px solid var(--line); border-radius: 24px; background: rgba(255,255,255,.5); }
.price-card.featured { color: white; border-color: var(--night); background: var(--night); }
.price-card small { color: var(--green-deep); font-weight: 850; }
.price-card.featured small { color: var(--green); }
.price-card h3 { margin: 24px 0 10px; font-size: 1.7rem; }
.price-card p { margin: 0; color: var(--ink-2); }
.price-card.featured p { color: rgba(255,255,255,.55); }
.price-card ul { margin: 26px 0 30px; padding: 0; list-style: none; }
.price-card li { margin: 9px 0; font-size: .86rem; }
.price-card li::before { content: "✓"; margin-right: 9px; color: var(--green-deep); font-weight: 900; }
.price-card.featured li::before { color: var(--green); }
.price-card .button { margin-top: auto; }

.faq { margin-top: 44px; border-top: 1px solid var(--line); }
.faq details { padding: 22px 0; border-bottom: 1px solid var(--line); }
.faq summary { display: flex; justify-content: space-between; gap: 20px; cursor: pointer; font-size: 1.05rem; font-weight: 800; list-style: none; }
.faq summary::after { content: "+"; color: var(--green-deep); }
.faq details[open] summary::after { content: "−"; }
.faq p { max-width: 760px; margin: 12px 0 0; color: var(--ink-2); }

.article-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 44px; }
.article-card { min-height: 340px; display: flex; flex-direction: column; padding: 28px; border: 1px solid var(--line); border-radius: 24px; background: rgba(255,255,255,.5); }
.article-card.featured { color: white; background: var(--night-2); }
.article-meta { display: flex; justify-content: space-between; gap: 14px; color: var(--green-deep); font-size: .68rem; font-weight: 850; }
.featured .article-meta { color: var(--green); }
.article-card h3 { margin: 56px 0 11px; font-size: 1.55rem; line-height: 1.25; letter-spacing: -.035em; }
.article-card p { margin: 0; color: var(--ink-2); font-size: .85rem; }
.featured p { color: rgba(255,255,255,.54); }
.article-card .text-link { margin-top: auto; align-self: start; }

.contact-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 22px; margin-top: 48px; }
.contact-aside { padding: 38px; border-radius: 26px; color: white; background: var(--night-2); }
.contact-aside h3 { margin: 0 0 14px; font-size: 2rem; line-height: 1.15; letter-spacing: -.05em; }
.contact-aside p { color: rgba(255,255,255,.56); }
.agenda { display: grid; gap: 9px; margin-top: 30px; }
.agenda div { display: grid; grid-template-columns: 32px 1fr; gap: 10px; padding: 14px; border: 1px solid rgba(255,255,255,.11); border-radius: 13px; background: rgba(255,255,255,.035); }
.agenda b { color: var(--green); font: 800 .72rem var(--latin); }
.agenda span { font-size: .8rem; }
.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 38px; border: 1px solid var(--line); border-radius: 26px; background: rgba(255,255,255,.55); }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .78rem; font-weight: 800; }
.field input,.field select,.field textarea { width: 100%; padding: 13px 14px; border: 1px solid #cfd7ce; border-radius: 11px; color: var(--ink); background: white; }
.field textarea { min-height: 120px; resize: vertical; }
.form-note { grid-column: 1 / -1; color: var(--ink-2); font-size: .72rem; }
.contact-form .button { grid-column: 1 / -1; justify-self: start; }

.final-cta { padding: 28px 0; }
.cta-box { min-height: 430px; display: grid; place-items: center; padding: 60px 30px; border-radius: 32px; color: white; text-align: center; background: var(--night); }
.cta-box h2 { max-width: 820px; margin: 0 auto; font-size: clamp(2.5rem,5.4vw,5.5rem); line-height: 1.03; letter-spacing: -.065em; }
.cta-box p { max-width: 620px; margin: 22px auto 28px; color: rgba(255,255,255,.55); }

.site-footer { color: rgba(255,255,255,.55); background: var(--night); }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3,1fr); gap: 38px; padding: 70px 0 48px; }
.footer-about p { max-width: 340px; margin: 16px 0 0; font-size: .82rem; }
.footer-col b { display: block; margin-bottom: 15px; color: white; font-size: .77rem; }
.footer-col a { display: block; margin: 8px 0; font-size: .76rem; }
.footer-col a:hover { color: var(--green); }
.footer-bottom { display: flex; justify-content: space-between; gap: 18px; padding: 20px 0 28px; border-top: 1px solid rgba(255,255,255,.1); font-size: .68rem; }

.article-content { width: min(780px,calc(100% - 40px)); margin: 0 auto; padding: 88px 0; }
.article-content h1 { margin: 16px 0 24px; font-size: clamp(2.6rem,6vw,5.5rem); line-height: 1.07; letter-spacing: -.06em; }
.article-content h2 { margin: 50px 0 14px; font-size: 1.8rem; line-height: 1.25; letter-spacing: -.04em; }
.article-content p,.article-content li { color: var(--ink-2); }

@keyframes title-rise {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 940px) {
  .site-nav a:not(.nav-cta) { display: none; }
  .split,.contact-grid { grid-template-columns: 1fr; }
  .sticky-copy { position: static; }
  .card-grid,.price-grid { grid-template-columns: 1fr 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .feature-row { grid-template-columns: 54px 190px 1fr; }
  .product-theatre { grid-template-columns: 1fr; }
  .theatre-copy { min-height: 0; }
  .theatre-copy .text-link { margin-top: 28px; }
  .article-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col:last-child { display: none; }
}

@media (max-width: 680px) {
  .shell { width: min(100% - 26px,1180px); }
  .site-header { height: 72px; }
  .page-hero { min-height: 560px; padding: 125px 0 70px; }
  .page-title { font-size: clamp(2.55rem,12vw,4.8rem); }
  .page-title span { white-space: normal; }
  .section { padding: 78px 0; }
  .section-head { align-items: start; flex-direction: column; }
  .section-title { font-size: clamp(2.2rem,10vw,4rem); }
  .card-grid,.price-grid,.article-grid { grid-template-columns: 1fr; }
  .card { min-height: 190px; }
  .flow { grid-template-columns: 1fr; }
  .flow-step { min-height: 190px; }
  .flow-step h3 { margin-top: 26px; }
  .feature-row { grid-template-columns: 42px 1fr; }
  .feature-row > div { grid-column: 2; }
  .product-theatre { padding: 8px; border-radius: 23px; }
  .theatre-copy { padding: 27px 21px; }
  .theatre-screen { min-height: 400px; }
  .screen-body { min-width: 740px; transform: scale(.58); transform-origin: top left; }
  .quote-band { padding: 30px 24px; }
  .contact-form { grid-template-columns: 1fr; padding: 27px 21px; }
  .field.full,.contact-form .button,.form-note { grid-column: auto; }
  .contact-form .button { width: 100%; }
  .cta-box { min-height: 390px; padding: 55px 22px; border-radius: 25px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-about { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}