/* ==========================================================================
   天瑿生技 企業形象網站 — Design System
   斷點：734px（手機）／1068px（平板）
   ========================================================================== */

:root {
    --bg: #FFFFFF;
    --bg-alt: #F5F5F7;
    --text: #1D1D1F;
    --text-2: #6E6E73;
    --primary: #0A6E7C;
    --primary-hover: #085A66;
    --primary-deep: #0B2545;
    --accent: #B8893E;
    --accent-soft: #F6EFE3;
    --line: #D2D2D7;
    --flag-bg: #FFF1D6;
    --flag-text: #7A4A00;

    --font: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
    --fs-hero: clamp(40px, 6vw, 80px);
    --fs-h2: clamp(32px, 4vw, 56px);
    --fs-h3: clamp(21px, 2.2vw, 28px);
    --fs-body: 17px;
    --radius: 18px;
    --radius-sm: 12px;
    --nav-h: 48px;
    --gutter: 16px;
    --container: 1068px;
    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

@media (min-width: 735px) {
    :root { --gutter: 32px; }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 24px); }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: var(--fs-body);
    line-height: 1.6;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img, svg, picture { display: block; max-width: 100%; }
img { height: auto; }
h1, h2, h3, h4, p, ol, ul, dl, dd, figure { margin: 0; }
ol, ul { padding: 0; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; color: inherit; }
table { border-collapse: collapse; }
main:focus { outline: none; }

:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; border-radius: 4px; }

.visually-hidden {
    position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
    position: absolute; left: 16px; top: -48px; z-index: 1000;
    background: var(--primary-deep); color: #fff; padding: 10px 18px; border-radius: 980px;
    transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 8px; text-decoration: none; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.container--narrow { max-width: calc(820px + var(--gutter) * 2); }

.section { padding: clamp(72px, 10vw, 140px) 0; }
.section--tight { padding: clamp(32px, 5vw, 56px) 0; }
.section--flush-top { padding-top: 0; }
.section--alt { background: var(--bg-alt); }
.section--dark { background: var(--primary-deep); color: #fff; }

.section-title { font-size: var(--fs-h2); font-weight: 600; line-height: 1.12; letter-spacing: -0.01em; margin-bottom: 0.6em; }
.section-title--center { text-align: center; }
.section-title--sm { font-size: var(--fs-h3); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.section-head .section-title { margin: 0; }
.eyebrow { font-size: 14px; font-weight: 600; letter-spacing: 0.08em; color: var(--accent); margin-bottom: 12px; }
.lead { font-size: clamp(19px, 1.6vw, 21px); line-height: 1.7; color: var(--text); }
.empty-state { color: var(--text-2); text-align: center; padding: 48px 0; }

/* ---------- Icons ---------- */
.icon { width: 24px; height: 24px; flex: none; }
.icon--sm { width: 18px; height: 18px; }
.icon--lg { width: 36px; height: 36px; }
.icon--xl { width: 56px; height: 56px; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: 44px; padding: 10px 24px; border-radius: 980px; border: 1px solid transparent;
    font-size: 17px; font-weight: 500; line-height: 1.2; cursor: pointer; text-decoration: none;
    transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn:hover { text-decoration: none; }
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-hover); }
.btn--light { background: #fff; color: var(--primary-deep); }
.btn--light:hover { background: rgba(255, 255, 255, 0.86); }
.btn--ghost { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn--ghost:hover { background: var(--primary); color: #fff; }
.btn--sm { min-height: 32px; padding: 6px 16px; font-size: 14px; }
.link-arrow { display: inline-flex; align-items: center; gap: 4px; font-weight: 500; }

/* ---------- 待確認標記 ---------- */
.flag {
    display: inline-block; margin-left: 4px; padding: 0 6px; border-radius: 4px;
    background: var(--flag-bg); color: var(--flag-text);
    font-size: 0.78em; font-weight: 600; line-height: 1.7; letter-spacing: 0; vertical-align: 0.08em; white-space: nowrap;
}
.section--dark .flag { background: #FFE2A8; color: #5C3700; }

/* ==========================================================================
   Navigation
   ========================================================================== */
.site-nav {
    position: sticky; top: 0; z-index: 100; height: var(--nav-h);
    background: rgba(255, 255, 255, 0.72);
    -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}
.site-nav__inner {
    height: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter);
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.site-nav__brand { display: inline-flex; align-items: center; gap: 8px; color: var(--text); font-weight: 600; font-size: 16px; white-space: nowrap; }
.site-nav__brand:hover { text-decoration: none; }
.site-nav__brand img { width: 28px; height: auto; }
.site-nav__menu ul { list-style: none; display: flex; align-items: center; gap: clamp(20px, 3vw, 40px); }
.site-nav__menu a { color: var(--text); font-size: 14px; opacity: 0.88; }
.site-nav__menu a:hover { opacity: 1; text-decoration: none; color: var(--primary); }
.site-nav__menu a[aria-current="page"] { color: var(--primary); opacity: 1; font-weight: 600; }
.site-nav__menu .btn { color: #fff; opacity: 1; }
.site-nav__menu-cta { display: none; }
.site-nav__toggle { display: none; }

@media (max-width: 734px) {
    .site-nav__cta { display: none; }
    .site-nav__toggle {
        display: inline-flex; align-items: center; justify-content: center;
        width: 44px; height: 44px; margin-right: -10px; background: none; border: 0; cursor: pointer; color: var(--text);
        position: relative; z-index: 2;
    }
    .site-nav__toggle .icon--close { display: none; }
    .nav-open .site-nav__toggle .icon--open { display: none; }
    .nav-open .site-nav__toggle .icon--close { display: block; }
    .site-nav__menu {
        position: fixed; inset: 0; z-index: 1; padding: calc(var(--nav-h) + 24px) 32px 32px;
        background: rgba(255, 255, 255, 0.98);
        opacity: 0; visibility: hidden;
        /* 關閉：先淡出再隱藏；開啟：立即可見，讓焦點能移入選單 */
        transition: opacity 0.25s var(--ease), visibility 0s linear 0.25s;
        overflow-y: auto;
    }
    .nav-open .site-nav__menu { opacity: 1; visibility: visible; transition: opacity 0.25s var(--ease), visibility 0s; }
    .site-nav__menu ul { flex-direction: column; align-items: stretch; gap: 0; }
    .site-nav__menu li { border-bottom: 1px solid var(--line); }
    .site-nav__menu a { display: block; padding: 16px 0; font-size: 24px; font-weight: 600; opacity: 1; }
    .site-nav__menu-cta { display: block; border-bottom: 0 !important; padding-top: 32px; }
    .site-nav__menu-cta .btn { display: flex; font-size: 17px; padding: 12px 24px; }
    .nav-open { overflow: hidden; }
    .nav-open .site-nav { background: #fff; }
}

/* ==========================================================================
   Hero carousel
   ========================================================================== */
.hero { position: relative; background: var(--primary-deep); color: #fff; overflow: hidden; }
.hero__track { position: relative; height: clamp(520px, 78vh, 760px); }
.hero__slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity 0.8s var(--ease), visibility 0.8s; }
.hero__slide.is-active { opacity: 1; visibility: visible; }
.hero__media, .hero__media img { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero__media img { object-fit: cover; }
.hero__slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(11, 37, 69, 0.15) 0%, rgba(11, 37, 69, 0.55) 100%); }
.hero__content {
    position: relative; z-index: 1; height: 100%;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 20px;
    text-align: center; padding: 0 var(--gutter) 64px; max-width: 1100px; margin: 0 auto;
}
.hero__title { font-size: var(--fs-hero); font-weight: 700; line-height: 1.08; letter-spacing: -0.015em; text-wrap: balance; word-break: keep-all; overflow-wrap: anywhere; }
.hero__subtitle { font-size: clamp(19px, 2.2vw, 28px); line-height: 1.5; opacity: 0.92; text-wrap: balance; word-break: keep-all; overflow-wrap: anywhere; }
.hero--static { padding: clamp(96px, 16vw, 200px) 0; background: linear-gradient(135deg, var(--primary-deep), var(--primary)); }
.hero--static .hero__content { padding-bottom: 0; }

.hero__controls {
    position: absolute; z-index: 2; left: 0; right: 0; bottom: 24px;
    display: flex; align-items: center; justify-content: center; gap: 12px;
}
.hero__btn {
    display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px;
    border-radius: 50%; border: 0; cursor: pointer; color: #fff;
    background: rgba(255, 255, 255, 0.18); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
    transition: background-color 0.2s var(--ease);
}
.hero__btn:hover { background: rgba(255, 255, 255, 0.32); }
.hero__btn .icon { width: 20px; height: 20px; }
.hero__btn--pause .icon--play { display: none; }
.hero__btn--pause[aria-pressed="true"] .icon--pause { display: none; }
.hero__btn--pause[aria-pressed="true"] .icon--play { display: block; }
.hero__dots { display: flex; gap: 4px; padding: 0 6px; }
.hero__dot {
    width: 24px; height: 24px; padding: 0; border: 0; background: transparent; cursor: pointer; position: relative;
}
.hero__dot::before {
    content: ""; position: absolute; left: 50%; top: 50%; width: 8px; height: 8px; margin: -4px 0 0 -4px;
    border-radius: 50%; background: rgba(255, 255, 255, 0.5); transition: background-color 0.2s, transform 0.2s;
}
.hero__dot[aria-current="true"]::before { background: #fff; transform: scale(1.25); }

/* ==========================================================================
   Home sections
   ========================================================================== */
/* 品牌宣言：主述 + 兩張卡片 */
.manifesto .eyebrow { display: flex; align-items: center; gap: 12px; }
.manifesto .eyebrow::before { content: ""; width: 32px; height: 2px; background: var(--accent); }
.manifesto__lead {
    display: grid; gap: 14px; max-width: 980px;
    word-break: keep-all; overflow-wrap: anywhere; /* 中文只在標點處換行 */
}
.manifesto__lead-main { font-size: clamp(28px, 4vw, 52px); font-weight: 700; line-height: 1.3; letter-spacing: 0.01em; color: var(--text); }
.manifesto__lead-sub { font-size: clamp(21px, 2.4vw, 30px); font-weight: 500; line-height: 1.5; color: var(--text-2); }
.manifesto__hl {
    background: linear-gradient(90deg, var(--primary-deep), var(--primary));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.manifesto__grid { display: grid; gap: 20px; margin-top: clamp(40px, 6vw, 72px); }
@media (min-width: 735px) { .manifesto__grid { grid-template-columns: 1fr 1fr; } }
.manifesto__card {
    background: var(--bg-alt); border-radius: var(--radius); padding: clamp(28px, 3.4vw, 44px);
    display: grid; gap: 24px; align-content: start;
}
.manifesto__card-head { display: flex; align-items: center; justify-content: space-between; }
.manifesto__icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); }
.manifesto__num { font-size: 15px; font-weight: 600; letter-spacing: 0.1em; color: var(--line); }
.manifesto__card p { display: grid; gap: 6px; font-size: clamp(19px, 1.8vw, 23px); font-weight: 600; line-height: 1.6; color: var(--primary-deep); word-break: keep-all; overflow-wrap: anywhere; }

.about { display: grid; gap: 32px; align-items: stretch; }
@media (min-width: 1069px) { .about { grid-template-columns: 1.2fr 1fr; gap: 48px; } }
.about__philosophy {
    background: var(--bg); border-radius: var(--radius); padding: clamp(28px, 4vw, 48px);
    display: flex; flex-direction: column; justify-content: center; gap: 16px;
}
.philosophy__headline { display: flex; flex-direction: column; font-size: clamp(36px, 4.4vw, 56px); font-weight: 700; line-height: 1.15; color: var(--primary-deep); }
.philosophy__headline span:last-child { color: var(--primary); }
.about__philosophy p:last-child { color: var(--text-2); }

.card-grid { list-style: none; display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 735px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1069px) { .card-grid { grid-template-columns: repeat(4, 1fr); } }
.feature-card {
    position: relative; background: var(--bg); border-radius: var(--radius); padding: 32px 28px;
    border: 1px solid rgba(0, 0, 0, 0.06);
}
.section--alt .feature-card { border-color: transparent; }
.feature-card__icon {
    display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; margin-bottom: 20px;
    border-radius: 16px; background: var(--accent-soft); color: var(--accent);
}
.feature-card__icon .icon { width: 30px; height: 30px; }
.feature-card__title { font-size: 22px; font-weight: 600; margin-bottom: 10px; }
.feature-card p { color: var(--text-2); font-size: 16px; }
.feature-card__num { position: absolute; top: 28px; right: 28px; font-size: 14px; font-weight: 600; color: var(--line); letter-spacing: 0.06em; }

/* 三方共生 */
.eco { display: grid; gap: 16px; grid-template-columns: 1fr; align-items: center; }
@media (min-width: 1069px) { .eco { grid-template-columns: 1fr 120px 1fr 120px 1fr; gap: 12px; } }
.eco__party { background: var(--bg-alt); border-radius: var(--radius); padding: 28px; height: 100%; border-top: 4px solid var(--c, var(--primary)); }
.eco__party--consumer { --c: #2E7D5B; }
.eco__party--franchisee { --c: var(--primary-deep); }
.eco__party--supplier { --c: var(--accent); }
.eco__head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.eco__icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 50%; background: var(--c); color: #fff; flex: none; }
.eco__name { font-size: 21px; font-weight: 600; line-height: 1.35; color: var(--text); }
.eco__role { display: block; font-size: 16px; font-weight: 500; color: var(--text-2); }
.checklist { list-style: none; display: grid; gap: 10px; }
.checklist li { display: flex; gap: 8px; align-items: flex-start; font-size: 16px; }
.icon--check { width: 20px; height: 20px; margin-top: 3px; color: var(--c, var(--primary)); stroke-width: 2.4; }
.eco__flow { display: flex; flex-direction: column; gap: 14px; color: var(--primary); padding: 8px 0; }
.eco__arrow { display: flex; flex-direction: column; align-items: stretch; gap: 4px; margin: 0; }
.eco__arrow--backward { color: var(--accent); flex-direction: column-reverse; }
.eco__label { font-size: 14px; font-weight: 600; text-align: center; color: var(--text); }
.eco__svg { width: 100%; height: 16px; }
@media (max-width: 1068px) {
    .eco__flow { flex-direction: row; justify-content: center; gap: 40px; padding: 4px 0; }
    .eco__arrow { flex-direction: row; align-items: center; gap: 8px; }
    .eco__arrow--backward { flex-direction: row; }
    .eco__svg { width: 16px; height: 56px; }
    .eco__arrow--forward .eco__svg { transform: rotate(90deg); width: 56px; height: 16px; margin: 0 -20px; }
    .eco__arrow--backward .eco__svg { transform: rotate(90deg); width: 56px; height: 16px; margin: 0 -20px; }
}

/* C2M */
.c2m { display: grid; gap: 40px; }
@media (min-width: 1069px) { .c2m { grid-template-columns: 230px 1fr; align-items: center; gap: 40px; } }
.c2m__intro { border-left: 3px solid var(--accent); padding-left: 24px; display: grid; gap: 6px; color: rgba(255, 255, 255, 0.86); }
.c2m__title { font-size: clamp(48px, 6vw, 72px); font-weight: 700; line-height: 1; color: #fff; margin-bottom: 12px; }
.c2m__title span { display: block; font-size: 22px; font-weight: 600; margin-top: 10px; color: #E8D2A8; }
.c2m__steps { list-style: none; display: grid; gap: 16px; grid-template-columns: 1fr; counter-reset: step; }
@media (min-width: 735px) { .c2m__steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1069px) { .c2m__steps { grid-template-columns: repeat(4, 1fr); gap: 24px; } }
.c2m__step { position: relative; background: rgba(255, 255, 255, 0.06); border-radius: var(--radius); padding: 28px 14px; text-align: center; }
@media (min-width: 1069px) {
    .c2m__step:not(:last-child)::after {
        content: ""; position: absolute; top: 58px; right: -22px; width: 16px; height: 16px;
        border-top: 2px solid var(--accent); border-right: 2px solid var(--accent); transform: rotate(45deg);
    }
}
.c2m__icon { display: inline-flex; align-items: center; justify-content: center; width: 64px; height: 64px; border-radius: 50%; border: 1.5px solid rgba(232, 210, 168, 0.7); color: #fff; margin-bottom: 14px; }
.c2m__icon .icon { width: 30px; height: 30px; }
.c2m__num { display: block; font-size: 12px; letter-spacing: 0.12em; color: #E8D2A8; margin-bottom: 4px; }
.c2m__step-title { font-size: 21px; font-weight: 600; margin-bottom: 8px; }
.c2m__step p { font-size: 15px; color: rgba(255, 255, 255, 0.8); }
.c2m__step p span { display: block; }

/* Slogan band + footer */
.slogan-band { background: linear-gradient(90deg, var(--primary-deep), #123A63 50%, var(--primary-deep)); color: #fff; padding: 28px var(--gutter); text-align: center; }
.slogan-band__text { font-size: clamp(17px, 2.2vw, 24px); font-weight: 600; letter-spacing: 0.18em; display: flex; flex-wrap: wrap; justify-content: center; }
.slogan-band__dot { color: var(--accent); }
.site-footer { background: var(--bg-alt); color: var(--text-2); font-size: 14px; padding: 48px 0 24px; }
.site-footer__inner { display: grid; gap: 28px; }
@media (min-width: 1069px) { .site-footer__inner { grid-template-columns: 1.1fr 1.6fr 1fr; align-items: start; } }
.site-footer__brand { display: flex; align-items: center; gap: 12px; }
.site-footer__name { font-size: 17px; font-weight: 600; color: var(--text); }
.site-footer__info { display: grid; gap: 8px; }
.site-footer__info div { display: flex; gap: 12px; }
.site-footer__info dt { flex: none; width: 3em; color: var(--text-2); }
.site-footer__info dd { color: var(--text); }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.site-footer__links a { color: var(--text); }
.site-footer__copy { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 12px; }

/* ==========================================================================
   Products
   ========================================================================== */
.page-hero { padding: clamp(56px, 8vw, 96px) 0 clamp(32px, 5vw, 56px); text-align: center; }
.page-hero__title { font-size: var(--fs-h2); font-weight: 700; line-height: 1.1; letter-spacing: -0.01em; }
.page-hero--doc { text-align: left; background: var(--bg-alt); margin-bottom: clamp(32px, 5vw, 56px); }
.page-hero__actions { margin-top: 20px; }

.product-grid { display: grid; gap: 24px; grid-template-columns: 1fr; }
@media (min-width: 735px) { .product-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1069px) { .product-grid { grid-template-columns: repeat(3, 1fr); } }
.product-card { background: var(--bg-alt); border-radius: var(--radius); overflow: hidden; transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease); }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06); }
.product-card__link { display: block; color: inherit; }
.product-card__link:hover { text-decoration: none; }
.product-card__media { aspect-ratio: 1 / 1; display: flex; align-items: center; justify-content: center; background: #fff; }
.product-card__media img { width: 100%; height: 100%; object-fit: contain; }
.product-card__body { padding: 20px 24px 24px; }
.product-card__code { font-size: 13px; color: var(--text-2); letter-spacing: 0.06em; }
.product-card__name { font-size: 21px; font-weight: 600; line-height: 1.35; margin: 4px 0 10px; }
.product-card__price { display: flex; align-items: baseline; gap: 12px; font-size: 17px; font-weight: 600; }
.product-card__pv { font-size: 14px; font-weight: 600; color: var(--accent); background: var(--accent-soft); padding: 1px 10px; border-radius: 980px; }
.product-placeholder {
    width: 100%; height: 100%; min-height: 220px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
    background: linear-gradient(135deg, #EEF5F6, #F5F5F7); color: var(--primary); font-weight: 600; letter-spacing: 0.1em;
}
.product-placeholder--lg { aspect-ratio: 1 / 1; border-radius: var(--radius); }

.breadcrumb { padding-top: 20px; padding-bottom: 20px; font-size: 13px; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; color: var(--text-2); }
.breadcrumb li + li::before { content: "›"; margin-right: 6px; color: var(--line); }
.breadcrumb a { color: var(--text-2); }

.product-detail { display: grid; gap: 32px; }
@media (min-width: 1069px) { .product-detail { grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: start; } }
.gallery__main { background: var(--bg-alt); border-radius: var(--radius); overflow: hidden; aspect-ratio: 1 / 1; display: flex; align-items: center; justify-content: center; }
.gallery__main img { width: 100%; height: 100%; object-fit: contain; }
.gallery__thumbs { list-style: none; display: flex; gap: 10px; margin-top: 12px; overflow-x: auto; padding: 4px 2px; }
.gallery__thumb { display: block; width: 72px; height: 72px; padding: 0; border: 2px solid transparent; border-radius: 12px; overflow: hidden; background: var(--bg-alt); cursor: pointer; }
.gallery__thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery__thumb[aria-current="true"] { border-color: var(--primary); }
.product-info { display: grid; gap: 16px; align-content: start; }
@media (min-width: 1069px) { .product-info { position: sticky; top: calc(var(--nav-h) + 32px); } }
.product-info__code { font-size: 14px; color: var(--text-2); letter-spacing: 0.06em; }
.product-info__name { font-size: clamp(32px, 4vw, 48px); font-weight: 700; line-height: 1.15; }
.product-info__price { display: flex; gap: 32px; padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.product-info__price dt { font-size: 13px; color: var(--text-2); }
.product-info__price dd { font-size: 28px; font-weight: 700; }
.product-body { display: grid; gap: 32px; }
@media (min-width: 1069px) { .product-body--with-aside { grid-template-columns: 1fr 300px; gap: 56px; align-items: start; } }

.prose { max-width: 760px; }
.prose > * + * { margin-top: 1em; }
.prose h2, .prose h3, .prose h4 { line-height: 1.3; margin-top: 1.6em; }
.prose h3 { font-size: 24px; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose img { border-radius: var(--radius-sm); }
.prose table { width: 100%; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 12px; }
.prose blockquote { border-left: 3px solid var(--accent); padding-left: 16px; color: var(--text-2); }

/* Ads */
.ads { display: grid; gap: 16px; }
.ads__item img { width: 100%; border-radius: var(--radius); }
.ads--side .ads__item img { border-radius: var(--radius-sm); }

/* ==========================================================================
   Downloads
   ========================================================================== */
.download-list { list-style: none; display: grid; gap: 20px; }
.download-card {
    display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: center;
    background: var(--bg-alt); border-radius: var(--radius); padding: 28px;
}
@media (min-width: 735px) { .download-card { grid-template-columns: auto 1fr auto; } }
.download-card__icon { display: inline-flex; width: 64px; height: 64px; border-radius: 16px; align-items: center; justify-content: center; background: #fff; color: var(--primary); }
.download-card__title { font-size: 22px; font-weight: 600; margin-bottom: 8px; }
.download-card__meta { display: flex; flex-wrap: wrap; gap: 4px 20px; font-size: 14px; color: var(--text-2); }
.download-card__meta div { display: flex; gap: 6px; }
.download-card__meta dd { color: var(--text); }
.download-card__btn { grid-column: 1 / -1; }
@media (min-width: 735px) { .download-card__btn { grid-column: auto; } }

/* ==========================================================================
   Document pages（事業計畫／營運規章）
   ========================================================================== */
.disclaimer-bar {
    position: sticky; top: var(--nav-h); z-index: 50;
    background: var(--primary-deep); color: #fff; font-size: 14px; line-height: 1.5;
}
.disclaimer-bar__inner { display: flex; align-items: flex-start; gap: 8px; padding-top: 10px; padding-bottom: 10px; }
.disclaimer-bar .icon { margin-top: 1px; color: #E8D2A8; }
.disclaimer-bar__src { color: rgba(255, 255, 255, 0.72); }
@media (max-width: 734px) { .disclaimer-bar__src { display: none; } }

.doc-layout { display: grid; gap: 24px; padding-bottom: clamp(72px, 10vw, 120px); }
@media (min-width: 1069px) { .doc-layout { grid-template-columns: 240px minmax(0, 1fr); gap: 56px; align-items: start; } }
.doc-content { min-width: 0; }

.doc-toc__desktop { display: none; }
.doc-toc__mobile { background: var(--bg-alt); border-radius: var(--radius-sm); }
.doc-toc__mobile summary {
    display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 14px 18px;
    font-weight: 600; cursor: pointer; list-style: none;
}
.doc-toc__mobile summary::-webkit-details-marker { display: none; }
.doc-toc__mobile[open] summary .icon { transform: rotate(180deg); }
.doc-toc__mobile ol { list-style: none; padding: 0 18px 14px; display: grid; }
.doc-toc__mobile a { display: block; padding: 8px 0; color: var(--text); border-top: 1px solid var(--line); font-size: 15px; }
@media (min-width: 1069px) {
    .doc-toc { position: sticky; top: calc(var(--nav-h) + var(--sticky-offset, 0px) + 24px); max-height: calc(100vh - var(--nav-h) - 48px); overflow-y: auto; }
    .doc-toc__mobile { display: none; }
    .doc-toc__desktop { display: block; }
    .doc-toc__title { font-size: 13px; font-weight: 600; color: var(--text-2); letter-spacing: 0.06em; margin-bottom: 12px; }
    .doc-toc__desktop ol { list-style: none; display: grid; gap: 2px; border-left: 1px solid var(--line); }
    .doc-toc__desktop a {
        display: block; padding: 6px 0 6px 16px; margin-left: -1px; border-left: 2px solid transparent;
        color: var(--text-2); font-size: 14px; line-height: 1.45;
    }
    .doc-toc__desktop a:hover { color: var(--text); text-decoration: none; }
    .doc-toc__desktop a.is-active { color: var(--primary); border-left-color: var(--primary); font-weight: 600; }
}
.plan-page { --sticky-offset: 44px; }

.doc-h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 700; line-height: 1.25; margin-bottom: 20px; }
.doc-h2--sub { font-size: clamp(21px, 2.2vw, 26px); color: var(--text-2); margin-top: -8px; }
.doc-h3 { font-size: clamp(19px, 2vw, 23px); font-weight: 600; line-height: 1.35; margin: 36px 0 14px; }
.plan-section, .reg-chapter, .reg-appendix { padding: 40px 0; border-bottom: 1px solid var(--line); scroll-margin-top: calc(var(--nav-h) + 72px); }
.plan-section:first-child, .reg-chapter:first-child { padding-top: 0; }
.plan-section > p + p { margin-top: 12px; }
.formula { margin-top: 16px; padding: 14px 18px; background: var(--bg-alt); border-left: 3px solid var(--primary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-weight: 500; }
.example { margin: 20px 0; padding: 16px 18px; background: var(--accent-soft); border-radius: var(--radius-sm); }

/* 會員等級雙軌 */
.track-grid { display: grid; gap: 20px; }
@media (min-width: 735px) { .track-grid { grid-template-columns: 1fr 1fr; } }
.track-card { background: var(--bg-alt); border-radius: var(--radius); padding: 24px; }
.track-card__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.track-card__head h3 { font-size: 21px; font-weight: 600; }
.track-card__list { list-style: none; display: grid; }
.track-card__row { display: flex; flex-direction: column; gap: 2px; padding: 12px 0; border-top: 1px solid var(--line); min-height: 72px; justify-content: center; }
.track-card__name { font-weight: 600; }
.track-card__cond { font-size: 15px; color: var(--text-2); }
.track-card__row--spacer { border-top: 1px solid transparent; }
@media (max-width: 734px) { .track-card__row--spacer { display: none; } }
.badge { display: inline-block; padding: 2px 12px; border-radius: 980px; font-size: 13px; font-weight: 600; white-space: nowrap; }
.badge--teal { background: #E2F0F2; color: #075561; }
.badge--gold { background: var(--accent-soft); color: #7A5620; }

/* 撥比 */
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 20px; }
.stat { background: var(--bg-alt); border-radius: var(--radius-sm); padding: 18px 12px; text-align: center; display: flex; flex-direction: column; gap: 4px; }
.stat__value { font-size: clamp(24px, 3.4vw, 40px); font-weight: 700; line-height: 1.1; }
.stat__value small { font-size: 0.45em; font-weight: 600; margin-left: 4px; color: var(--text-2); }
.stat__label { font-size: 13px; color: var(--text-2); }
.stat--accent { background: var(--primary); color: #fff; }
.stat--accent .stat__label { color: rgba(255, 255, 255, 0.85); }
.bar-chart svg { width: 100%; height: 64px; }
.legend { list-style: none; display: grid; gap: 8px 24px; margin-top: 16px; grid-template-columns: 1fr; }
@media (min-width: 735px) { .legend { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1069px) { .legend { grid-template-columns: repeat(3, 1fr); } }
.legend li { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 15px; }
.legend a { color: var(--text); }
.legend strong { margin-left: auto; }
.legend__swatch { display: inline-block; width: 12px; height: 12px; border-radius: 3px; background: var(--c); flex: none; vertical-align: -1px; }
.legend__total { margin-top: 14px; font-size: 14px; color: var(--text-2); }
.legend--tiers li strong { margin-left: 4px; }

/* 共富基金矩陣 */
.matrix { margin: 28px 0; display: grid; gap: 20px; }
@media (min-width: 1069px) { .matrix { grid-template-columns: 360px 1fr; align-items: center; gap: 40px; } }
.matrix svg { width: 100%; max-width: 420px; height: auto; margin: 0 auto; font-family: var(--font); }
.matrix__note { display: flex; gap: 8px; align-items: baseline; font-weight: 500; }
.matrix .legend { grid-template-columns: 1fr; }

.split-grid { display: grid; gap: 16px; }
@media (min-width: 735px) { .split-grid { grid-template-columns: 1fr 1fr; } }
.split-card { background: var(--bg-alt); border-radius: var(--radius); padding: 22px; display: grid; gap: 12px; }
.split-card__label { font-weight: 600; }
.split-card__text { font-size: 15px; color: var(--text-2); }
.split-bar { display: flex; height: 14px; border-radius: 7px; overflow: hidden; }
.split-card__keys { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 15px; }
.split-card__keys strong { font-size: 19px; margin-left: 2px; }
.split-bar__a { background: var(--primary); }
.split-bar__b { background: var(--accent); }
.num-list { padding-left: 1.6em; display: grid; gap: 10px; }

/* 表格 */
.table-wrap { margin: 20px 0; overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius-sm); border: 1px solid var(--line); }
.data-table { width: 100%; min-width: 100%; font-size: 15px; }
.data-table caption { caption-side: top; text-align: left; padding: 12px 16px; font-weight: 600; background: var(--bg-alt); }
.data-table th, .data-table td { padding: 12px 16px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.data-table thead th { background: var(--bg-alt); font-size: 13px; font-weight: 600; color: var(--text-2); white-space: nowrap; }
.data-table tbody tr:last-child > * { border-bottom: 0; }
.data-table tbody th { font-weight: 600; }
.data-table--bordered th, .data-table--bordered td { border: 1px solid var(--line); text-align: center; vertical-align: middle; }
.data-table--compact { max-width: 420px; }
.col-bar { width: 32%; }
.mini-bar { display: flex; height: 10px; border-radius: 5px; background: var(--bg-alt); overflow: hidden; margin-top: 7px; }
.mini-bar__a { background: var(--primary); }
.mini-bar__b { background: var(--accent); }
.chart-key { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-2); }

/* 手機：資料表改為卡片 */
@media (max-width: 734px) {
    .table-wrap:not(.table-wrap--reg) { border: 0; overflow: visible; }
    .table-wrap:not(.table-wrap--reg) .data-table thead { display: none; }
    .table-wrap:not(.table-wrap--reg) .data-table tbody tr {
        display: block; background: var(--bg-alt); border-radius: var(--radius-sm); padding: 8px 16px; margin-bottom: 12px;
    }
    .table-wrap:not(.table-wrap--reg) .data-table th,
    .table-wrap:not(.table-wrap--reg) .data-table td {
        display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--line); text-align: right;
    }
    .table-wrap:not(.table-wrap--reg) .data-table tbody tr > :last-child { border-bottom: 0; }
    .table-wrap:not(.table-wrap--reg) .data-table [data-label]::before {
        content: attr(data-label); font-weight: 500; color: var(--text-2); text-align: left; flex: none;
    }
    .table-wrap:not(.table-wrap--reg) .data-table .col-bar { display: none; }
    .data-table--bordered { min-width: 560px; }
}

/* 範例卡 */
.example-grid { display: grid; gap: 16px; margin-top: 20px; }
@media (min-width: 1069px) { .example-grid { grid-template-columns: repeat(3, 1fr); } }
.example-card { background: var(--accent-soft); border-radius: var(--radius); padding: 22px; display: grid; gap: 6px; align-content: start; }
.example-card__label { font-size: 13px; font-weight: 700; color: #7A5620; letter-spacing: 0.06em; }
.example-card__formula { font-size: 19px; font-weight: 700; }
.example-card .flag { justify-self: start; margin-left: 0; }

.condition-list { list-style: none; display: grid; gap: 10px; }
@media (min-width: 735px) { .condition-list { grid-template-columns: 1fr 1fr; } }
.condition-list li { display: flex; gap: 12px; align-items: flex-start; background: var(--bg-alt); border-radius: var(--radius-sm); padding: 14px 16px; }
.condition-list__mark { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; font-size: 14px; }

/* 領導貢獻階梯 */
.stairs { list-style: none; display: grid; grid-template-columns: repeat(10, 1fr); gap: 6px; align-items: end; height: 260px; margin: 24px 0 8px; }
.stairs__step { height: 100%; display: flex; flex-direction: column; justify-content: flex-end; align-items: stretch; text-align: center; }
.stairs__bar { height: var(--h); min-height: 12px; border-radius: 8px 8px 0 0; background: linear-gradient(180deg, var(--primary), var(--primary-deep)); }
.stairs__step:last-child .stairs__bar { background: linear-gradient(180deg, #D0A860, var(--accent)); }
.stairs__rate { font-size: clamp(11px, 1.4vw, 15px); font-weight: 700; margin-bottom: 6px; }
.stairs__lv { font-size: clamp(10px, 1.2vw, 13px); color: var(--text-2); padding-top: 8px; border-top: 1px solid var(--line); }

.sum-grid { display: grid; gap: 16px; margin-top: 24px; }
@media (min-width: 735px) { .sum-grid { grid-template-columns: 1fr 1fr; } }
.sum-card { background: var(--primary-deep); color: #fff; border-radius: var(--radius); padding: 24px; display: grid; gap: 6px; align-content: start; }
.sum-card__label { font-size: 14px; color: rgba(255, 255, 255, 0.8); }
.sum-card__line { font-size: 17px; font-weight: 600; overflow-wrap: anywhere; }
.sum-card__line:last-of-type { font-size: 22px; }
.sum-card .flag { justify-self: start; margin-left: 0; background: #FFE2A8; color: #5C3700; }

/* 營運規章 */
.reg-num { color: var(--primary); white-space: nowrap; }
.reg-section { margin-top: 12px; }
.reg-clause { margin: 14px 0; }
.reg-clause__text { display: flex; gap: 12px; }
.reg-clause__no { flex: none; min-width: 2.4em; font-weight: 700; color: var(--primary-deep); font-variant-numeric: tabular-nums; }
.reg-items { list-style: none; display: grid; gap: 8px; margin: 10px 0 0 calc(2.4em + 12px); }
.reg-items li { display: flex; gap: 8px; }
.reg-items__mark { flex: none; min-width: 1.4em; font-weight: 600; color: var(--primary); }
.reg-items__body { min-width: 0; }
.reg-items__body > * + * { margin-top: 8px; }
.reg-items .reg-items { margin-left: 0; }
.reg-paragraph { margin: 12px 0; }
.reg-section > .reg-items, .reg-chapter > .reg-items { margin-left: 0; }
@media (max-width: 734px) {
    .reg-items { margin-left: 0; }
}
.table-wrap--reg { margin-left: 0; }

.accordion { border-radius: var(--radius-sm); }
.accordion__summary { list-style: none; cursor: pointer; }
.accordion__summary::-webkit-details-marker { display: none; }
.accordion__title { display: flex; align-items: center; gap: 12px; margin: 0; }
.accordion__icon { margin-left: auto; transition: transform 0.25s var(--ease); color: var(--text-2); }
.accordion[open] .accordion__icon { transform: rotate(180deg); }
.accordion__body { padding-top: 20px; }
.reg-appendix__meta { font-size: 14px; color: var(--text-2); margin-bottom: 8px; }
.law-article { display: grid; gap: 4px 16px; padding: 14px 0; border-top: 1px solid var(--line); }
@media (min-width: 735px) { .law-article { grid-template-columns: 7em 1fr; } }
.law-article__no { font-weight: 700; color: var(--primary-deep); white-space: nowrap; }
.law-article__body > * + * { margin-top: 8px; }
.reg-items--law { margin: 8px 0 0; }

/* 錯誤頁 */
.error-page { text-align: center; }
.error-page__code { font-size: clamp(56px, 10vw, 96px); font-weight: 700; color: var(--primary); line-height: 1; margin-bottom: 12px; }
.error-page .lead { color: var(--text-2); margin-bottom: 28px; }
.error-page__debug { margin-top: 32px; text-align: left; white-space: pre-wrap; font-size: 13px; background: var(--bg-alt); border-radius: var(--radius-sm); padding: 16px; }

/* ==========================================================================
   捲動進場動畫（僅作用於初始不在畫面內的元素，由 site.js 加上 .is-pending）
   ========================================================================== */
.reveal.is-pending { opacity: 0; transform: translateY(24px); }
.reveal.is-shown { opacity: 1; transform: none; transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
    .reveal.is-pending { opacity: 1; transform: none; }
    .product-card:hover { transform: none; }
}