:root {
    --bg: #f4efe7;
    --panel: rgba(255, 252, 247, 0.9);
    --panel-soft: rgba(255, 255, 255, 0.72);
    --line: rgba(24, 48, 40, 0.1);
    --text: #173027;
    --text-soft: #627168;
    --text-light: rgba(255, 255, 255, 0.82);
    --primary: #1c6b4f;
    --primary-strong: #124533;
    --accent: #c98536;
    --shadow: 0 24px 56px rgba(19, 48, 38, 0.12);
    --shadow-strong: 0 24px 70px rgba(17, 49, 37, 0.22);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --font-sans: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-display: "DIN Alternate", "HarmonyOS Sans SC", "PingFang SC", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(201, 133, 54, 0.18), transparent 28%),
        radial-gradient(circle at top right, rgba(28, 107, 79, 0.16), transparent 26%),
        linear-gradient(180deg, #f8f4ed 0%, #f0ebe2 52%, #f8f4ed 100%);
}

body::before,
body::after {
    content: "";
    position: fixed;
    width: 34rem;
    height: 34rem;
    border-radius: 999px;
    filter: blur(80px);
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
}

body::before {
    top: -10rem;
    left: -10rem;
    background: rgba(201, 133, 54, 0.26);
}

body::after {
    right: -10rem;
    bottom: 6rem;
    background: rgba(28, 107, 79, 0.18);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
}

figure {
    margin: 0;
}

.portal-page {
    position: relative;
    z-index: 1;
    padding: 18px 18px 118px;
}

.portal-shell {
    max-width: 1260px;
    margin: 0 auto;
}

.site-header,
.hero,
.signal-strip,
.section-block,
.site-footer {
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
}

.site-header {
    position: sticky;
    top: 14px;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 14px 18px;
    border-radius: 999px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.brand-mark {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.84);
    border: 1px solid rgba(24, 48, 40, 0.08);
}

.brand-mark img,
.hero-logo img,
.hero-scene img,
.highlight-feature-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.brand-copy {
    display: grid;
    gap: 2px;
}

.brand-copy strong {
    font-size: 1.08rem;
    letter-spacing: 0.04em;
}

.brand-copy small {
    color: var(--text-soft);
    font-size: 0.82rem;
}

.site-nav,
.header-actions,
.hero-actions,
.footer-links {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.site-nav {
    color: var(--text-soft);
}

.site-nav a,
.header-link {
    padding: 10px 14px;
    border-radius: 999px;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.site-nav a:hover,
.header-link:hover {
    background: rgba(24, 48, 40, 0.06);
    color: var(--text);
    transform: translateY(-1px);
}

.portal-main {
    display: grid;
    gap: 22px;
    margin-top: 24px;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.92fr);
    gap: 24px;
    padding: 30px;
    border-radius: var(--radius-xl);
}

.hero-brand {
    display: flex;
    align-items: center;
    gap: 18px;
}

.hero-logo {
    width: 84px;
    height: 84px;
    flex: 0 0 84px;
    border-radius: 26px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(24, 48, 40, 0.08);
    box-shadow: 0 18px 34px rgba(19, 48, 38, 0.14);
}

.hero-brand-copy {
    display: grid;
    gap: 8px;
}

.hero-brand-copy span {
    color: var(--text-soft);
    line-height: 1.7;
}

.eyebrow,
.section-kicker,
.signal-label,
.point-kicker,
.highlight-tag,
.role-label,
.spotlight-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.eyebrow::before,
.section-kicker::before {
    content: "";
    width: 34px;
    height: 1px;
    background: currentColor;
}

.hero h1,
.section-head h2 {
    margin: 14px 0 0;
    line-height: 1.05;
}

.hero h1 {
    max-width: none;
    font-size: clamp(1.78rem, 2.4vw, 3rem);
    letter-spacing: -0.02em;
    line-height: 1.12;
}

.hero-intro,
.section-head p,
.highlight-card p,
.role-card p,
.module-card p,
.timeline-card p,
.download-side-note p,
.site-footer p,
.proof-card p,
.hero-point p,
.signal-note p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.78;
}

.hero-intro {
    margin-top: 16px;
    max-width: 44ch;
    font-size: 0.98rem;
}

.hero-app-summary {
    margin-top: 16px;
    padding: 18px;
    border-radius: 20px;
    border: 1px solid rgba(24, 48, 40, 0.08);
    background: rgba(255, 255, 255, 0.72);
}

.hero-app-summary strong {
    display: block;
    font-size: 1rem;
    line-height: 1.55;
}

.hero-app-summary p {
    margin: 8px 0 0;
    color: var(--text-soft);
    line-height: 1.7;
}

.hero-app-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.hero-app-tags span {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid rgba(24, 48, 40, 0.1);
    background: rgba(255, 255, 255, 0.82);
    color: var(--primary);
    font-size: 0.84rem;
    font-weight: 700;
}

.hero-actions {
    margin-top: 26px;
}

.btn,
.mega-download,
.sticky-action,
.spotlight-action,
.version-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover,
.mega-download:hover,
.sticky-action:hover,
.spotlight-action:hover,
.version-action:hover {
    transform: translateY(-2px);
}

.btn-download,
.mega-download,
.sticky-action,
.spotlight-action,
.version-action {
    position: relative;
    color: #fff;
    background: linear-gradient(135deg, #1b6e52 0%, #114132 62%, #0e372b 100%);
    box-shadow: 0 18px 30px rgba(19, 77, 57, 0.24);
}

.btn-download::after,
.mega-download::after,
.sticky-action::after {
    content: "";
    position: absolute;
    inset: 1px;
    border-radius: inherit;
    border: 1px solid rgba(255, 255, 255, 0.14);
    pointer-events: none;
}

.btn-large {
    min-height: 60px;
    padding: 0 28px;
    font-size: 1.02rem;
}

.btn-compact {
    min-height: 46px;
    padding: 0 18px;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(24, 48, 40, 0.12);
}

.hero-point-grid,
.summary-grid,
.highlight-grid,
.role-grid,
.module-grid,
.timeline-grid,
.version-list {
    display: grid;
    gap: 16px;
}

.hero-point-grid {
    margin-top: 24px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.hero-point,
.summary-card,
.highlight-card,
.role-card,
.module-card,
.timeline-card,
.version-card,
.download-side-card,
.download-side-note {
    border-radius: var(--radius-lg);
    border: 1px solid rgba(24, 48, 40, 0.08);
    background: var(--panel-soft);
    padding: 20px;
}

.hero-point strong,
.summary-card strong,
.highlight-card h3,
.role-card h3,
.module-card h3,
.timeline-card h3,
.version-card h3,
.download-side-card h3 {
    display: block;
    margin-top: 12px;
    font-size: 1.08rem;
}

.hero-point p,
.timeline-card p,
.summary-card p {
    margin-top: 10px;
}

.hero-version-shell {
    margin-top: 22px;
}

.hero-visual {
    display: grid;
    gap: 14px;
}

.hero-scene-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.hero-scene,
.hero-visual-note {
    border-radius: 22px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.hero-scene {
    position: relative;
    background: rgba(24, 48, 40, 0.06);
}

.hero-scene-main {
    aspect-ratio: 16 / 10;
}

.hero-scene-half {
    aspect-ratio: 5 / 6;
}

.hero-scene-caption {
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 18px;
    z-index: 1;
    display: grid;
    gap: 10px;
    padding: 16px 18px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(10, 24, 19, 0.08) 0%, rgba(10, 24, 19, 0.74) 100%);
    backdrop-filter: blur(10px);
    color: #fff;
}

.hero-scene-caption span,
.hero-visual-note span {
    display: inline-flex;
    color: rgba(255, 255, 255, 0.74);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero-scene-caption strong,
.hero-visual-note strong {
    display: block;
    font-size: 1rem;
    line-height: 1.45;
}

.hero-visual-note {
    padding: 18px 20px;
    border: 1px solid rgba(24, 48, 40, 0.08);
    background: linear-gradient(160deg, rgba(24, 48, 40, 0.94) 0%, rgba(17, 65, 50, 0.88) 100%);
    color: #fff;
}

.hero-scene-caption p,
.hero-visual-note p {
    margin-top: 12px;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.72;
}

.hero-note-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.hero-note-tags span {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.82rem;
}

.version-spotlight,
.download-primary {
    color: #fff;
    background:
        radial-gradient(circle at top right, rgba(201, 133, 54, 0.28), transparent 32%),
        linear-gradient(160deg, #174a39 0%, #102e25 100%);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow-strong);
}

.version-spotlight .spotlight-label,
.download-primary .spotlight-label {
    color: rgba(255, 255, 255, 0.8);
}

.version-spotlight h2,
.download-primary h3 {
    margin: 12px 0 0;
    font-size: clamp(1.3rem, 1.7vw, 1.9rem);
    line-height: 1.1;
}

.version-spotlight p,
.download-primary p,
.spotlight-meta,
.spotlight-note,
.download-meta,
.download-announcement,
.download-empty p,
.spotlight-empty p {
    color: var(--text-light);
    line-height: 1.7;
}

.spotlight-empty h2,
.download-empty strong {
    margin: 12px 0 0;
    font-size: 1.2rem;
}

.spotlight-badges,
.version-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 18px;
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    font-size: 0.84rem;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.badge.accent {
    background: rgba(201, 133, 54, 0.18);
}

.spotlight-meta,
.download-meta,
.version-meta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 18px;
    font-size: 0.94rem;
}

.version-meta {
    color: var(--text-soft);
}

.spotlight-note,
.download-announcement,
.version-announcement {
    margin-top: 18px;
    padding: 16px 18px;
    border-radius: var(--radius-md);
}

.spotlight-note,
.download-announcement {
    background: rgba(255, 255, 255, 0.08);
}

.version-announcement {
    background: rgba(24, 48, 40, 0.05);
}

.spotlight-list,
.download-notes,
.version-notes {
    margin: 18px 0 0;
    padding-left: 18px;
}

.spotlight-list li,
.download-notes li,
.version-notes li {
    margin-top: 8px;
    line-height: 1.65;
}

.spotlight-action,
.version-action {
    margin-top: 22px;
    width: fit-content;
}

.proof-index,
.timeline-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(24, 48, 40, 0.08);
    color: var(--primary);
    font-family: var(--font-display);
    font-weight: 700;
}

.signal-strip,
.section-block,
.site-footer,
.scene-strip {
    border-radius: var(--radius-xl);
}

.signal-strip {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.7fr);
    gap: 18px;
    padding: 22px;
}

.scene-strip {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 20px;
    padding: 26px;
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
}

.scene-strip-copy {
    display: grid;
    align-content: center;
}

.scene-strip-copy h2 {
    margin: 14px 0 0;
    font-size: clamp(1.8rem, 2.4vw, 3rem);
    line-height: 1.08;
}

.scene-strip-copy p {
    max-width: 42ch;
    margin: 18px 0 0;
    color: var(--text-soft);
    line-height: 1.78;
}

.scene-value-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    align-items: stretch;
}

.scene-photo {
    min-height: 100%;
    border-radius: 20px;
    overflow: hidden;
    background: rgba(24, 48, 40, 0.05);
    box-shadow: var(--shadow);
}

.scene-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scene-photo-wide {
    grid-column: span 2;
    aspect-ratio: 16 / 9;
}

.scene-value-card {
    min-height: 100%;
    padding: 20px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(24, 48, 40, 0.08);
    background: var(--panel-soft);
}

.scene-value-card strong {
    display: block;
    margin-top: 12px;
    font-size: 1.05rem;
}

.scene-value-card p {
    margin: 10px 0 0;
    color: var(--text-soft);
    line-height: 1.72;
}

.summary-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.summary-card {
    background: rgba(255, 255, 255, 0.68);
}

.summary-card span {
    display: block;
    color: var(--text-soft);
    font-size: 0.84rem;
}

.summary-card strong {
    margin-top: 8px;
    font-size: clamp(1.45rem, 2vw, 2rem);
    font-family: var(--font-display);
}

.signal-note {
    padding: 18px;
    border-radius: var(--radius-lg);
    background: rgba(24, 48, 40, 0.04);
}

.signal-note p {
    margin-top: 14px;
}

.section-block {
    padding: 28px;
}

.section-head {
    max-width: 760px;
}

.section-head h2 {
    font-size: clamp(1.45rem, 1.9vw, 2.45rem);
    line-height: 1.16;
}

.section-head p {
    margin-top: 18px;
    max-width: 46ch;
}

.audience-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 18px;
    margin-top: 24px;
    align-items: stretch;
}

.audience-panel,
.problem-panel {
    min-height: 100%;
    padding: 22px;
    border-radius: 28px;
}

.audience-panel {
    color: #fff;
    background: linear-gradient(155deg, rgba(16, 47, 36, 0.98) 0%, rgba(23, 74, 57, 0.94) 62%, rgba(201, 133, 54, 0.82) 100%);
    box-shadow: var(--shadow-strong);
}

.problem-panel {
    border: 1px solid rgba(24, 48, 40, 0.08);
    background: rgba(255, 255, 255, 0.72);
}

.audience-panel-head,
.problem-panel-head {
    display: grid;
    gap: 10px;
}

.audience-brow,
.problem-brow {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    min-height: 30px;
    padding: 0 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.audience-brow {
    color: rgba(255, 255, 255, 0.82);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.problem-brow {
    color: var(--primary);
    background: rgba(28, 107, 79, 0.08);
    border: 1px solid rgba(24, 48, 40, 0.08);
}

.audience-panel-head strong,
.problem-panel-head strong {
    font-size: 1.2rem;
    line-height: 1.4;
}

.audience-role-list,
.problem-list {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.audience-role-item,
.problem-item {
    padding: 16px 18px;
    border-radius: 20px;
}

.audience-role-item {
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.problem-item {
    border: 1px solid rgba(24, 48, 40, 0.08);
    background: rgba(255, 255, 255, 0.78);
}

.audience-role-item strong,
.problem-item strong {
    display: block;
    font-size: 1rem;
    line-height: 1.5;
}

.audience-role-item p,
.problem-item p {
    margin: 8px 0 0;
    line-height: 1.68;
}

.audience-role-item p {
    color: rgba(255, 255, 255, 0.8);
}

.problem-item p {
    color: var(--text-soft);
}

.highlight-grid,
.role-grid {
    margin-top: 26px;
}

.highlight-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.highlight-showcase {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 26px;
}

.highlight-feature {
    display: grid;
    min-height: 100%;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(24, 48, 40, 0.08);
    background: var(--panel-soft);
    box-shadow: var(--shadow);
}

.highlight-feature-main {
    grid-row: auto;
}

.highlight-feature-media {
    aspect-ratio: 16 / 10;
    background: rgba(24, 48, 40, 0.06);
}

.highlight-feature-copy {
    padding: 18px 18px 20px;
}

.highlight-feature-copy h3 {
    margin: 10px 0 0;
    font-size: 1.08rem;
    line-height: 1.35;
}

.highlight-feature-copy p {
    margin: 10px 0 0;
    color: var(--text-soft);
    line-height: 1.66;
}

.highlight-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.highlight-tags span,
.highlight-mini-card span {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid rgba(24, 48, 40, 0.1);
    background: rgba(255, 255, 255, 0.68);
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 700;
}

.highlight-mini-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 16px;
}

.highlight-mini-card {
    min-height: 100%;
    padding: 18px 20px 20px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(24, 48, 40, 0.08);
    background: rgba(255, 255, 255, 0.74);
}

.highlight-mini-card strong {
    display: block;
    margin-top: 12px;
    font-size: 1rem;
    line-height: 1.55;
}

.app-preview-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.84fr) minmax(0, 1.16fr);
    gap: 18px;
    margin-top: 24px;
    align-items: center;
}

.preview-copy-panel {
    position: relative;
    display: grid;
    gap: 14px;
    min-height: 100%;
    padding: 22px;
    border-radius: 30px;
    overflow: hidden;
    background: linear-gradient(155deg, rgba(16, 47, 36, 0.96) 0%, rgba(25, 82, 63, 0.92) 62%, rgba(201, 133, 54, 0.78) 100%);
    box-shadow: var(--shadow-strong);
    color: #fff;
}

.preview-copy-panel::before {
    content: "";
    position: absolute;
    top: -10%;
    right: -12%;
    width: 220px;
    height: 220px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    filter: blur(10px);
}

.preview-brow {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.76);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.preview-copy-panel h3 {
    position: relative;
    z-index: 1;
    margin: 0;
    max-width: 11ch;
    font-size: clamp(1.45rem, 1.9vw, 2.15rem);
    line-height: 1.08;
}

.preview-copy-panel p {
    position: relative;
    z-index: 1;
    margin: 0;
    max-width: 36ch;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.76;
}

.preview-pill-row {
    position: relative;
    z-index: 1;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.preview-pill-row span {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    font-size: 0.82rem;
    font-weight: 700;
}

.preview-note-list {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 12px;
}

.preview-note-card {
    padding: 16px 18px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
}

.preview-note-card strong {
    display: block;
    font-size: 1rem;
}

.preview-note-card p {
    margin-top: 8px;
    max-width: none;
    font-size: 0.92rem;
}

.preview-inline-link {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    width: fit-content;
    min-height: 48px;
    margin-top: auto;
    padding: 0 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.96);
    color: var(--primary-strong);
    font-weight: 700;
}

.preview-inline-link::after {
    content: "→";
}

.device-stage {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    align-items: end;
}

.device-stage::before {
    content: "";
    position: absolute;
    inset: auto 5% 10% 5%;
    height: 48%;
    border-radius: 34px;
    background: radial-gradient(circle at center, rgba(28, 107, 79, 0.18), rgba(201, 133, 54, 0.06) 70%, transparent 100%);
    filter: blur(12px);
}

.phone-shot {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 14px;
}

.phone-shot-left {
    padding-top: 44px;
}

.phone-shot-main {
    z-index: 2;
    transform: translateY(-18px);
}

.phone-shot-right {
    padding-bottom: 24px;
}

.phone-frame {
    position: relative;
    padding: 14px;
    border-radius: 40px;
    background: linear-gradient(180deg, #171b1a 0%, #0c100f 100%);
    box-shadow: 0 34px 60px rgba(18, 42, 34, 0.22);
}

.phone-frame::before {
    content: "";
    position: absolute;
    top: 18px;
    left: 50%;
    z-index: 2;
    width: 30%;
    height: 6px;
    transform: translateX(-50%);
    border-radius: 999px;
    background: rgba(21, 25, 24, 0.78);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

.phone-screen {
    position: relative;
    aspect-ratio: 430 / 932;
    border-radius: 30px;
    overflow: hidden;
    background: #fff;
}

.phone-screen::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(24, 48, 40, 0.08);
    pointer-events: none;
}

.phone-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.phone-caption {
    display: grid;
    gap: 6px;
    padding: 0 8px;
}

.phone-caption strong {
    font-size: 1.02rem;
}

.phone-caption span {
    color: var(--text-soft);
    font-size: 0.88rem;
    line-height: 1.65;
}

.section-split {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 22px;
}

.principle-list,
.chip-list {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 22px;
}

.principle-list span,
.chip-list span {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid rgba(24, 48, 40, 0.1);
    background: rgba(255, 255, 255, 0.62);
}

.role-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.module-grid {
    margin-top: 26px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.module-card,
.timeline-card,
.version-card {
    min-height: 100%;
}

.timeline-grid {
    margin-top: 24px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.timeline-card h3 {
    margin-top: 14px;
}

.role-card,
.module-card,
.timeline-card {
    padding: 18px;
    background: rgba(255, 255, 255, 0.66);
}

.role-card h3,
.module-card h3,
.timeline-card h3 {
    margin-top: 10px;
    font-size: 1rem;
}

.role-card p,
.module-card p,
.timeline-card p {
    margin-top: 8px;
    color: var(--text-soft);
    line-height: 1.62;
    font-size: 0.94rem;
}

.module-card .chip-list,
.principle-list {
    gap: 8px;
    margin-top: 16px;
}

.module-card .chip-list span,
.principle-list span {
    min-height: 34px;
    padding: 0 12px;
    font-size: 0.88rem;
    background: rgba(255, 255, 255, 0.78);
}

.download-section .section-head {
    max-width: 900px;
}

.download-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.72fr);
    gap: 18px;
    margin-top: 24px;
}

.download-side {
    display: grid;
    gap: 16px;
}

.mega-download {
    width: 100%;
    min-height: 64px;
    font-size: 1.05rem;
}

.download-side-card p {
    margin: 10px 0 0;
    color: var(--text-soft);
    line-height: 1.7;
}

.download-qr-card {
    padding: 18px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(24, 48, 40, 0.08);
    background: rgba(255, 255, 255, 0.8);
}

.download-qr-card strong,
.download-qr-card h3 {
    display: block;
    margin: 0;
    font-size: 1rem;
    line-height: 1.45;
}

.download-qr-empty p,
.download-qr-card p,
.download-qr-note {
    margin: 8px 0 0;
    color: var(--text-soft);
    line-height: 1.7;
}

.download-qr-head {
    display: grid;
    gap: 4px;
}

.download-qr-subtitle {
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.download-qr-figure {
    display: grid;
    place-items: center;
    margin-top: 16px;
    padding: 14px;
    border-radius: 22px;
    background: #fff;
    border: 1px solid rgba(24, 48, 40, 0.08);
}

.download-qr-figure img {
    width: min(100%, 220px);
    aspect-ratio: 1 / 1;
    border-radius: 14px;
    image-rendering: pixelated;
}

.download-qr-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 14px;
}

.download-qr-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid rgba(24, 48, 40, 0.12);
    background: rgba(255, 255, 255, 0.92);
    color: var(--primary-strong);
    font-size: 0.92rem;
    font-weight: 700;
    transition: transform 0.2s ease, background 0.2s ease;
}

.download-qr-link:hover {
    transform: translateY(-1px);
    background: #fff;
}

.download-qr-link-secondary {
    color: var(--text);
}

.download-qr-code {
    margin-top: 12px;
    word-break: break-all;
    color: var(--text-soft);
    font-size: 0.82rem;
    line-height: 1.6;
}

.version-order-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 24px;
}

.version-order-head strong {
    font-size: 1rem;
}

.version-order-head span {
    color: var(--text-soft);
    font-size: 0.88rem;
}

.version-list {
    margin-top: 22px;
    grid-template-columns: 1fr;
}

.version-card {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr) auto;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
}

.version-card-main {
    min-width: 0;
}

.version-card-head {
    display: flex;
    align-items: center;
    gap: 12px;
    justify-content: space-between;
    flex-wrap: wrap;
}

.version-card-head h3 {
    margin: 0;
    font-size: 1rem;
}

.version-card-head .version-badges {
    margin-top: 0;
}

.version-order {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: rgba(24, 48, 40, 0.07);
    color: var(--primary);
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 700;
}

.version-card p {
    margin: 8px 0 0;
    color: var(--text-soft);
}

.version-card .version-meta {
    margin-top: 10px;
}

.version-card .version-action {
    margin-top: 0;
    min-width: 92px;
}

.empty-card {
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px dashed rgba(24, 48, 40, 0.18);
    color: var(--text-soft);
    background: rgba(255, 255, 255, 0.44);
}

.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-top: 26px;
    padding: 24px 28px;
}

.site-footer strong {
    font-size: 1.05rem;
}

.site-footer p {
    margin-top: 8px;
}

.footer-meta {
    display: grid;
    gap: 6px;
    margin-top: 14px;
    color: var(--text-soft);
    font-size: 0.9rem;
    line-height: 1.65;
}

.footer-company-name {
    font-size: 0.96rem;
}

.footer-slogan {
    color: var(--primary);
    font-weight: 700;
}

.site-credit {
    display: block;
    margin-top: 10px;
    color: var(--text-soft);
    font-size: 0.84rem;
}

.sticky-download {
    position: fixed;
    left: 50%;
    bottom: 18px;
    z-index: 30;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    width: min(1080px, calc(100vw - 24px));
    padding: 14px 14px 14px 20px;
    transform: translateX(-50%);
    border-radius: 22px;
    background: rgba(14, 37, 29, 0.94);
    box-shadow: 0 24px 50px rgba(14, 37, 29, 0.28);
    backdrop-filter: blur(20px);
}

.sticky-copy {
    display: grid;
    gap: 4px;
}

.sticky-copy span {
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.82rem;
}

.sticky-copy strong {
    color: #fff;
    font-size: 1rem;
}

@media (max-width: 1180px) {
    .site-header {
        border-radius: 28px;
    }

    .site-nav {
        display: none;
    }

    .hero,
    .section-split,
    .download-grid,
    .signal-strip,
    .scene-strip {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        max-width: 15ch;
    }

    .highlight-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .highlight-showcase {
        grid-template-columns: 1fr;
    }

    .audience-grid {
        grid-template-columns: 1fr;
    }

    .highlight-feature-main {
        grid-row: auto;
    }

    .app-preview-grid {
        grid-template-columns: 1fr;
    }

    .preview-copy-panel h3 {
        max-width: none;
    }

    .device-stage {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .phone-shot-main {
        grid-column: 1 / -1;
        max-width: min(420px, 100%);
        margin: 0 auto;
        transform: none;
    }

    .phone-shot-left,
    .phone-shot-right {
        padding: 0;
    }

    .highlight-mini-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .timeline-grid,
    .module-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .scene-value-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .portal-page {
        padding: 14px 14px 122px;
    }

    .site-header,
    .hero,
    .section-block,
    .signal-strip,
    .site-footer {
        border-radius: 24px;
    }

    .site-header,
    .hero,
    .section-block,
    .site-footer {
        padding-left: 22px;
        padding-right: 22px;
    }

    .hero,
    .section-block {
        padding-top: 22px;
        padding-bottom: 22px;
    }

    .hero-point-grid,
    .audience-grid,
    .role-grid,
    .module-grid,
    .version-list {
        grid-template-columns: 1fr;
    }

    .highlight-grid {
        grid-template-columns: 1fr;
    }

    .device-stage {
        gap: 16px;
    }

    .highlight-mini-grid,
    .timeline-grid,
    .summary-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .scene-value-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .scene-photo-wide {
        grid-column: 1 / -1;
    }

    .site-footer {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .site-header {
        position: static;
        flex-wrap: wrap;
        padding: 14px;
        border-radius: 20px;
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
    }

    .hero,
    .section-block,
    .signal-strip,
    .scene-strip,
    .site-footer {
        padding: 18px;
        border-radius: 20px;
    }

    .hero-brand {
        align-items: flex-start;
    }

    .device-stage {
        grid-template-columns: 1fr;
    }

    .preview-copy-panel,
    .phone-frame {
        border-radius: 24px;
    }

    .phone-shot-main {
        max-width: none;
    }

    .phone-screen {
        border-radius: 20px;
    }

    .hero-logo {
        width: 64px;
        height: 64px;
        flex-basis: 64px;
        border-radius: 22px;
    }

    .hero h1,
    .section-head h2 {
        max-width: none;
    }

    .hero h1 {
        font-size: 1.72rem;
        line-height: 1.18;
    }

    .section-head h2 {
        font-size: 1.34rem;
        line-height: 1.24;
    }

    .hero-intro,
    .section-head p,
    .preview-copy-panel p,
    .download-side-card p,
    .download-qr-card p {
        font-size: 0.94rem;
        line-height: 1.68;
    }

    .audience-panel,
    .problem-panel {
        padding: 18px;
        border-radius: 22px;
    }

    .audience-panel-head strong,
    .problem-panel-head strong {
        font-size: 1.08rem;
    }

    .hero-app-summary {
        padding: 16px;
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .download-qr-actions {
        grid-template-columns: 1fr;
    }

    .timeline-grid,
    .highlight-mini-grid,
    .summary-grid {
        grid-template-columns: 1fr;
    }

    .phone-shot-left,
    .phone-shot-right {
        display: none;
    }

    .version-card {
        grid-template-columns: 1fr;
        align-items: flex-start;
    }

    .version-order {
        width: 44px;
        height: 44px;
    }

    .version-card .version-action {
        width: 100%;
    }

    .site-credit {
        display: none;
    }

    .scene-value-grid {
        grid-template-columns: 1fr;
    }

    .hero-scene-row {
        grid-template-columns: 1fr;
    }

    .hero-scene-main,
    .hero-scene-half,
    .scene-photo,
    .scene-photo-wide {
        aspect-ratio: 16 / 10;
    }

    .version-spotlight,
    .download-primary {
        padding: 22px;
    }

    .sticky-download {
        bottom: 12px;
        width: calc(100vw - 16px);
        padding: 12px;
        border-radius: 18px;
    }

    .sticky-copy strong {
        font-size: 0.94rem;
    }

    .sticky-action {
        min-height: 48px;
        padding: 0 18px;
        white-space: nowrap;
    }
}