/* 览客官网共享样式：所有视觉值来自 design-spec.md */
:root {
  color-scheme: dark;
  --color-bg: #0B0D0F;
  --color-surface: #14181D;
  --color-card: #1C222A;
  --color-card-hover: #222A33;
  --color-bg-rgb: 11, 13, 15;
  --color-primary: #E8A33D;
  --color-primary-hover: #F0B45B;
  --color-primary-active: #D18C2E;
  --color-primary-soft: #332614;
  --color-primary-rgb: 232, 163, 61;
  --color-on-primary: #0B0D0F;
  --color-functional: #4FD1C5;
  --color-functional-soft: #12312F;
  --color-text: #F4F1EA;
  --color-text-heading: #F4F1EA;
  --color-text-subtle-heading: #D8DDE2;
  --color-text-secondary: #B9C0C8;
  --color-text-tertiary: #A4AEB8;
  --color-text-disabled: #929CA6;
  --color-border: #2B333C;
  --color-border-muted: #4A5561;
  --color-border-strong: #6B7884;
  --color-focus: #F0B45B;
  --color-success: #4FD1C5;
  --color-success-text: #76DDD4;
  --color-success-bg: #12312F;
  --color-warning: #E8A33D;
  --color-warning-text: #F0BC6B;
  --color-warning-bg: #332614;
  --color-danger: #FF9B93;
  --color-danger-bg: #351C1C;
  --color-info-text: #C7CDD4;
  --color-info-bg: #1C222A;
  --neutral-50: #F4F1EA;
  --neutral-100: #D8DDE2;
  --neutral-200: #B9C0C8;
  --neutral-300: #A4AEB8;
  --neutral-400: #929CA6;
  --neutral-500: #6B7884;
  --neutral-600: #4A5561;
  --neutral-700: #2B333C;
  --neutral-800: #1C222A;
  --neutral-900: #14181D;
  --neutral-950: #0B0D0F;
  --color-transparent: rgba(0, 0, 0, 0);
  --color-shadow: rgba(0, 0, 0, 0.24);
  --color-screen-line: rgba(244, 241, 234, 0.24);
  --color-screen-reflection: rgba(244, 241, 234, 0.08);
  --color-screen-shine: rgba(255, 246, 226, 0.56);
  --color-screen-inner: rgba(232, 163, 61, 0.18);
  --color-screen-outer: rgba(232, 163, 61, 0.16);
  --color-scrim-98: rgba(11, 13, 15, 0.98);
  --color-scrim-96: rgba(11, 13, 15, 0.96);
  --color-scrim-92: rgba(11, 13, 15, 0.92);
  --color-scrim-88: rgba(11, 13, 15, 0.88);
  --color-scrim-72: rgba(11, 13, 15, 0.72);
  --color-scrim-38: rgba(11, 13, 15, 0.38);
  --color-scrim-28: rgba(11, 13, 15, 0.28);
  --color-scrim-08: rgba(11, 13, 15, 0.08);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-numeric: "SF Pro Display", "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", sans-serif;
  --font-size-hero: 40px;
  --font-size-h1: 34px;
  --font-size-h2: 28px;
  --font-size-h3: 22px;
  --font-size-h4: 18px;
  --font-size-body-lg: 17px;
  --font-size-body: 15px;
  --font-size-caption: 13px;
  --font-size-micro: 12px;
  --line-height-display: 1.1;
  --line-height-h1: 1.15;
  --line-height-h2: 1.2;
  --line-height-h3: 1.35;
  --line-height-h4: 1.4;
  --line-height-body-lg: 1.7;
  --line-height-body: 1.75;
  --line-height-caption: 1.6;
  --weight-display: 300;
  --weight-heading: 300;
  --weight-subheading: 400;
  --weight-card-title: 500;
  --weight-body: 400;
  --weight-label: 500;
  --tracking-hero: -0.02em;
  --tracking-h1: -0.02em;
  --tracking-h2: -0.015em;
  --tracking-h3: -0.01em;
  --tracking-body: 0;
  --tracking-caption: 0.02em;
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;
  --space-8: 48px;
  --space-9: 64px;
  --space-10: 80px;
  --space-11: 96px;
  --space-12: 120px;
  --space-13: 128px;
  --space-14: 144px;
  --space-15: 160px;
  --container: 1200px;
  --container-narrow: 880px;
  --measure: 680px;
  --gutter: 20px;
  --grid-gap: 16px;
  --section-y: 64px;
  --section-y-large: 80px;
  --nav-height: 64px;
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --control-height: 52px;
  --control-height-compact: 44px;
  --touch-target: 44px;
  --button-padding-y: 14px;
  --button-padding-x: 28px;
  --input-padding-y: 14px;
  --input-padding-x: 16px;
  --card-padding: 20px;
  --floating-cta-height: 56px;
  --shadow-card: 0 12px 32px var(--color-shadow);
  --screen-width: 240px;
  --shadow-screen: inset 0 0 20px var(--color-screen-inner), 0 0 min(56px, calc(var(--screen-width) / 2)) var(--color-screen-outer);
  --duration-fast: 200ms;
  --duration-base: 240ms;
  --duration-slow: 300ms;
  --ease-standard: ease-out;
  --reveal-distance: 16px;
  --z-floating-cta: 80;
  --z-nav-drawer: 90;
  --z-nav: 100;
  --z-skip-link: 200;
}

*, *::before, *::after { box-sizing: border-box; }
html { font-family: var(--font-sans); font-size: 16px; text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body { margin: 0; background: var(--color-bg); color: var(--color-text); font-size: var(--font-size-body); font-weight: var(--weight-body); line-height: var(--line-height-body); letter-spacing: var(--tracking-body); }
body.nav-open { overflow: hidden; }
main { display: block; }
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--color-primary-hover); text-decoration-thickness: 1px; text-underline-offset: 4px; }
button, input, select { font: inherit; }
button, input, select, a { -webkit-tap-highlight-color: var(--color-transparent); }
button { min-width: 0; }
p, ul, ol, dl { margin: 0; }
p + p { margin-top: var(--space-4); }
ul, ol { padding-left: var(--space-5); }
li + li { margin-top: var(--space-3); }
h1, h2, h3, h4 { margin: 0; color: var(--color-text-heading); }
h1 { font-size: var(--font-size-h1); line-height: var(--line-height-h1); font-weight: var(--weight-heading); letter-spacing: var(--tracking-h1); }
h2 { max-width: 760px; font-size: var(--font-size-h2); line-height: var(--line-height-h2); font-weight: var(--weight-heading); letter-spacing: var(--tracking-h2); }
h3 { font-size: var(--font-size-h3); line-height: var(--line-height-h3); font-weight: var(--weight-subheading); letter-spacing: var(--tracking-h3); }
h4 { font-size: var(--font-size-h4); line-height: var(--line-height-h4); font-weight: var(--weight-card-title); }
[hidden] { display: none !important; }
[id] { scroll-margin-top: calc(var(--nav-height) + var(--space-5)); }
::selection { background: var(--color-primary); color: var(--color-on-primary); }
:where(a, button, input, select, textarea, [tabindex]):focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }

.skip-link { position: fixed; top: var(--space-4); left: var(--space-4); z-index: var(--z-skip-link); padding: var(--space-3) var(--space-4); background: var(--color-primary); color: var(--color-on-primary); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.container { width: min(var(--container), calc(100% - var(--gutter) - var(--gutter))); margin-inline: auto; }
.container--narrow { width: min(var(--container-narrow), calc(100% - var(--gutter) - var(--gutter))); margin-inline: auto; }
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--grid-gap); }
.grid > * { min-width: 0; }
.section { padding-block: var(--section-y); }
.section--large { padding-block: var(--section-y-large); }
.section--surface { background: var(--color-surface); }
.section__head { display: grid; gap: var(--space-4); margin-bottom: var(--space-6); }
.section__head--split { align-items: end; }
.section__lead, .page-hero__lead { max-width: 560px; color: var(--color-text-secondary); font-size: var(--font-size-body-lg); line-height: var(--line-height-body-lg); }
.measure { max-width: var(--measure); }
.eyebrow { color: var(--color-primary); font-size: var(--font-size-caption); line-height: var(--line-height-caption); font-weight: var(--weight-label); letter-spacing: var(--tracking-caption); }
.muted { color: var(--color-text-secondary); }
.tertiary { color: var(--color-text-tertiary); }
.caption { color: var(--color-text-tertiary); font-size: var(--font-size-caption); line-height: var(--line-height-caption); letter-spacing: var(--tracking-caption); }
.number, .parameter-value, .step-count { font-family: var(--font-numeric); font-variant-numeric: tabular-nums lining-nums; font-feature-settings: "tnum" 1, "lnum" 1; }
.stack { display: grid; gap: var(--space-4); }
.stack--large { gap: var(--space-6); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
.text-link { display: inline-flex; min-height: var(--touch-target); align-items: center; color: var(--color-primary); font-weight: var(--weight-label); }
.text-link:hover { color: var(--color-primary-hover); }

.button { display: inline-flex; min-width: 0; min-height: var(--control-height); align-items: center; justify-content: center; gap: var(--space-2); padding: var(--button-padding-y) var(--button-padding-x); border: 1px solid var(--color-transparent); border-radius: var(--radius-sm); font: 500 16px/24px var(--font-sans); text-align: center; text-decoration: none; cursor: pointer; transition: background-color var(--duration-fast) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard); }
.button--primary { background: var(--color-primary); color: var(--color-on-primary); }
.button--primary:hover { background: var(--color-primary-hover); }
.button--primary:active { background: var(--color-primary-active); }
.button--secondary { border-color: var(--color-border-strong); background: var(--color-transparent); color: var(--color-text); }
.button--secondary:hover { border-color: var(--color-primary); background: var(--color-card); color: var(--color-primary-hover); }
.button--secondary:active { background: var(--color-primary-soft); }
.button--compact { min-height: var(--control-height-compact); padding: 10px 20px; }
.button--full { width: 100%; }
.button:disabled, .button[aria-disabled="true"] { border-color: var(--color-border); background: var(--color-card); color: var(--color-text-disabled); cursor: not-allowed; opacity: 1; }
.button:active { transform: translateY(1px); }
.text-button { display: inline-flex; min-height: var(--touch-target); align-items: center; justify-content: center; padding: var(--space-2); border: 0; background: var(--color-transparent); color: var(--color-primary); text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.text-button:hover { color: var(--color-primary-hover); }
.button-row { display: flex; flex-direction: column; gap: var(--space-3); }

.site-header { position: sticky; top: 0; z-index: var(--z-nav); height: var(--nav-height); border-bottom: 1px solid var(--color-border); background: var(--color-scrim-96); }
.site-nav { display: flex; height: 100%; align-items: center; justify-content: space-between; gap: var(--space-4); }
.brand { display: inline-flex; min-height: var(--touch-target); align-items: center; gap: var(--space-3); color: var(--color-text); text-decoration: none; }
.brand__name { font-size: 22px; line-height: 28px; font-weight: var(--weight-card-title); letter-spacing: var(--tracking-caption); }
.brand__tagline { display: none; color: var(--color-text-tertiary); font-size: var(--font-size-micro); line-height: 18px; }
.nav-toggle { display: inline-flex; width: var(--touch-target); height: var(--touch-target); align-items: center; justify-content: center; border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); background: var(--color-surface); color: var(--color-text); cursor: pointer; }
.nav-toggle__icon, .nav-toggle__icon::before, .nav-toggle__icon::after { width: 24px; height: 1.5px; background: currentColor; }
.nav-toggle__icon { position: relative; }
.nav-toggle__icon::before, .nav-toggle__icon::after { content: ""; position: absolute; left: 0; }
.nav-toggle__icon::before { top: -7px; }
.nav-toggle__icon::after { top: 7px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: var(--color-transparent); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { top: 0; transform: rotate(-45deg); }
.nav-drawer { position: fixed; inset: var(--nav-height) 0 0; z-index: var(--z-nav-drawer); padding: var(--space-5) var(--gutter) calc(var(--space-6) + env(safe-area-inset-bottom)); background: var(--color-bg); opacity: 0; transform: translateY(-8px); transition: opacity var(--duration-fast) var(--ease-standard), transform var(--duration-fast) var(--ease-standard); overflow-y: auto; }
.nav-drawer.is-open { opacity: 1; transform: translateY(0); }
.nav-drawer__links { display: grid; }
.nav-drawer__links a { position: relative; display: flex; min-height: 56px; align-items: center; padding: var(--space-3) var(--space-4); color: var(--color-text); font-size: 18px; line-height: 28px; text-decoration: none; }
.nav-drawer__links a[aria-current="page"] { color: var(--color-primary); font-weight: var(--weight-label); }
.nav-drawer__links a[aria-current="page"]::before { content: ""; position: absolute; left: 0; width: 3px; height: 24px; background: var(--color-primary); }
.nav-drawer .button { margin-top: var(--space-5); width: 100%; }
.nav-desktop { display: none; }

.hero { position: relative; display: flex; flex-direction: column; background: var(--color-bg); }
.hero__media { position: relative; order: 2; height: min(125vw, 560px); margin-top: var(--space-6); overflow: hidden; background: var(--color-surface); }
.hero__media video, .hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: 72% 50%; filter: brightness(.82) saturate(.8); }
.hero__media::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-scrim-72) 12%, var(--color-transparent) 30%); }
.hero__content { display: contents; }
.hero__copy { display: grid; order: 1; width: min(var(--container), calc(100% - var(--gutter) - var(--gutter))); margin-inline: auto; padding-top: var(--space-7); gap: 0; }
.hero__content > div:last-child { order: 3; width: min(var(--container), calc(100% - var(--gutter) - var(--gutter))); margin-inline: auto; }
.hero__copy .eyebrow { margin-bottom: var(--space-5); }
.hero h1 { max-width: 600px; font-size: var(--font-size-hero); line-height: var(--line-height-display); font-weight: var(--weight-display); letter-spacing: var(--tracking-hero); }
.hero__lead { margin-top: var(--space-5); max-width: 560px; color: var(--color-text-secondary); font-size: var(--font-size-body-lg); line-height: var(--line-height-body-lg); }
.hero__note { margin-top: var(--space-4); max-width: 560px; color: var(--color-text-secondary); }
.hero__copy > *, .hero__actions, .hero__actions > .button { min-width: 0; max-width: 100%; }
.hero__lead, .hero__note { overflow-wrap: anywhere; }
.hero__actions { margin-top: var(--space-6); }
.trust-list { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-3); margin-top: var(--space-5); padding: 0; list-style: none; color: var(--color-text-tertiary); font-size: var(--font-size-caption); line-height: 20px; }
.trust-list li { display: flex; align-items: center; gap: var(--space-3); margin: 0; }
.trust-list li + li::before { content: ""; width: 1px; height: 12px; background: var(--color-border-muted); }
.identity-grid { display: grid; gap: var(--space-4); padding-block: var(--space-5) var(--space-7); }
.identity-card { display: flex; min-height: 112px; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); color: var(--color-text); text-decoration: none; }
.identity-card:hover { border-color: var(--color-primary); background: var(--color-card); }
.identity-card:active { background: var(--color-primary-soft); }
.identity-card__arrow { flex: 0 0 24px; color: var(--color-primary); font-size: 24px; transition: transform var(--duration-fast) var(--ease-standard); }
.identity-card:hover .identity-card__arrow { transform: translateX(4px); }
.identity-card__title { display: block; font-size: 18px; line-height: 28px; font-weight: var(--weight-card-title); }
.identity-card__text { display: block; margin-top: var(--space-1); color: var(--color-text-secondary); font-size: 14px; line-height: 22px; }
.skip-note { margin-top: calc(var(--space-4) * -1); padding-bottom: var(--space-5); color: var(--color-text-tertiary); font-size: var(--font-size-caption); }

.page-hero { padding-block: var(--space-9); border-bottom: 1px solid var(--color-border); }
.page-hero__grid { align-items: center; }
.page-hero__copy { grid-column: 1 / -1; }
.page-hero__copy h1 { max-width: var(--container-narrow); }
.page-hero__lead { margin-top: var(--space-5); }
.page-hero__actions { margin-top: var(--space-6); }
.page-hero__visual { grid-column: 1 / -1; margin-top: var(--space-8); }
.breadcrumb { margin-bottom: var(--space-5); padding: 0; list-style: none; color: var(--color-text-tertiary); font-size: var(--font-size-caption); }
.breadcrumb li { display: inline; margin: 0; }
.breadcrumb li + li::before { content: " / "; color: var(--color-border-strong); }
.breadcrumb a { display: inline-flex; min-width: var(--touch-target); min-height: var(--touch-target); align-items: center; color: var(--color-text-secondary); }

.card { min-width: 0; padding: var(--card-padding); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-card); }
.card--flat { background: var(--color-surface); }
.card__index { display: block; margin-bottom: var(--space-5); color: var(--color-primary); font-size: var(--font-size-caption); line-height: 20px; font-weight: var(--weight-label); }
.card h3, .card h4 { margin-bottom: var(--space-3); }
.card p { color: var(--color-text-secondary); }
.card .text-link { margin-top: var(--space-5); }
.cards-grid { display: grid; gap: var(--grid-gap); }
.pain-card { min-height: 208px; }
.pain-card--button { width: 100%; color: var(--color-text); text-align: left; cursor: pointer; }
.pain-card--button:hover, .pain-card--button.is-active { border-color: var(--color-primary); }
.pain-card--button.is-active { border-left-width: 3px; }
.value-card { border: 0; border-top: 1px solid var(--color-border); border-radius: 0; background: var(--color-transparent); }
.tag-list { display: flex; flex-wrap: wrap; gap: var(--space-2); padding: 0; list-style: none; }
.tag-list li { margin: 0; }
.tag { display: inline-flex; min-height: 28px; align-items: center; padding: var(--space-1) 10px; border-radius: var(--radius-pill); background: var(--color-primary-soft); color: var(--color-warning-text); font-size: var(--font-size-micro); line-height: 18px; font-weight: var(--weight-label); }
.tag--neutral { background: var(--color-card); color: var(--color-text-subtle-heading); }
.tag--status { background: var(--color-success-bg); color: var(--color-success-text); }

.product-card { overflow: hidden; padding: 0; border-radius: var(--radius-lg); transition: background-color var(--duration-base) var(--ease-standard); }
.product-card:hover { background: var(--color-card-hover); }
.product-card__content { padding: var(--card-padding); }
.product-card h3 { margin-top: var(--space-4); font-size: 24px; line-height: 32px; }
.product-card__points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-2); margin-top: var(--space-5); padding: 0; list-style: none; color: var(--color-text-tertiary); font-size: var(--font-size-caption); line-height: 20px; }
.product-card__points li { margin: 0; }
.media-frame { position: relative; overflow: hidden; border-radius: var(--radius-md); background: var(--color-surface); }
.media-frame > img { width: 100%; height: 100%; object-fit: cover; filter: brightness(.72) saturate(.72) contrast(1.05); transition: filter var(--duration-base) var(--ease-standard); }
.media-frame::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, var(--color-scrim-08), var(--color-scrim-28)); }
.media-frame--wide { aspect-ratio: 16 / 10; border-radius: 0; }
.media-frame--box { aspect-ratio: 16 / 9; }
.media-frame--detail { aspect-ratio: 16 / 9; }
.media-frame--detail > img { filter: brightness(.82) saturate(.72) contrast(1.05); }
.product-card:hover .media-frame > img { filter: brightness(.8) saturate(.72) contrast(1.05); }
.product-visual { display: grid; min-height: 280px; place-items: center; padding: var(--space-8); background: var(--color-surface); }
.screen { --screen-width: 160px; position: relative; width: min(var(--screen-width), 64%); aspect-ratio: 9 / 16; border: 1px solid var(--color-screen-line); border-radius: 6px; background: var(--color-primary-soft); box-shadow: var(--shadow-screen); }
.screen::before { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; box-shadow: inset 0 0 12px var(--color-screen-reflection); }
.screen::after { content: ""; position: absolute; top: 0; left: var(--space-2); right: var(--space-2); height: 1px; pointer-events: none; background: linear-gradient(90deg, var(--color-transparent) 0%, var(--color-screen-shine) 50%, var(--color-transparent) 100%); }
.screen--poster { --screen-width: 180px; aspect-ratio: 9 / 14; border-radius: var(--radius-sm) var(--radius-sm) var(--radius-xs) var(--radius-xs); }
.screen--poster::before { box-shadow: inset 0 0 12px var(--color-screen-reflection), 0 56px 0 -54px var(--color-border-strong); }
.screen__content { display: grid; height: 100%; align-content: center; gap: var(--space-3); padding: var(--space-4); color: var(--color-warning-text); }
.screen__line { display: block; height: 1px; background: var(--color-primary); }
.screen__block { display: block; aspect-ratio: 4 / 3; border: 1px solid var(--color-primary); }
.screen__label { font-size: var(--font-size-caption); line-height: var(--line-height-caption); text-align: center; }
.screen-caption { margin-top: var(--space-5); color: var(--color-text-tertiary); font-size: var(--font-size-caption); text-align: center; }

.poster-journey { display: grid; gap: var(--space-3); padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.poster-journey ol { display: grid; gap: var(--space-2); margin: 0; padding: 0; list-style: none; counter-reset: journey; }
.poster-journey li { display: flex; align-items: center; gap: var(--space-3); margin: 0; counter-increment: journey; }
.poster-journey li::before { content: counter(journey, decimal-leading-zero); color: var(--color-primary); font-family: var(--font-numeric); font-size: var(--font-size-micro); }
.notice { padding: var(--space-4) var(--space-5); border-left: 3px solid var(--color-border-strong); border-radius: var(--radius-sm); background: var(--color-info-bg); color: var(--color-info-text); font-size: 14px; line-height: 22px; }
.notice--warning { border-left-color: var(--color-warning); background: var(--color-warning-bg); color: var(--color-warning-text); }
.notice--success { border-left-color: var(--color-success); background: var(--color-success-bg); color: var(--color-success-text); }

.case-card { overflow: hidden; padding: 0; }
.case-card__visual { display: grid; aspect-ratio: 16 / 10; place-items: center; background: var(--color-surface); }
.case-card__visual .screen { --screen-width: 88px; }
.case-card__content { padding: var(--card-padding); }
.case-card h3 { margin-top: var(--space-4); font-size: 22px; line-height: 30px; }
.case-card__result { margin-top: var(--space-4); padding: var(--space-4); background: var(--color-surface); color: var(--color-text-tertiary); }
.case-nav { display: grid; gap: var(--space-3); }
.case-nav .button { width: 100%; }
.case-section { border-bottom: 1px solid var(--color-border); }
.case-section__head { display: grid; gap: var(--space-4); }
.case-detail { display: grid; gap: var(--space-6); margin-top: var(--space-6); }
.case-metrics { display: grid; gap: var(--grid-gap); margin-top: var(--space-6); }
.case-metric { background: var(--color-surface); color: var(--color-text-tertiary); }

.topology { position: relative; display: grid; gap: var(--space-4); padding: var(--space-6); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); }
.topology__nodes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); }
.topology__node { display: grid; min-height: 88px; place-items: center; padding: var(--space-3); border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); background: var(--color-card); color: var(--color-text-subtle-heading); text-align: center; }
.topology__node--screen { border-color: var(--color-primary); background: var(--color-primary-soft); color: var(--color-warning-text); box-shadow: var(--shadow-screen); }
.topology__line { height: 1px; background: var(--color-border-muted); }
.placement-map { display: grid; gap: var(--space-3); padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); }
.placement-map__row { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: var(--space-4); align-items: center; min-height: 64px; padding-bottom: var(--space-3); border-bottom: 1px solid var(--color-border); }
.placement-map__row:last-child { padding-bottom: 0; border-bottom: 0; }
.placement-map__point { color: var(--color-primary); font-size: var(--font-size-caption); }
.placement-map__task { color: var(--color-text-secondary); }
.workflow { display: grid; gap: var(--grid-gap); counter-reset: workflow; }
.workflow__step { position: relative; padding-top: var(--space-5); border-top: 1px solid var(--color-border-muted); }
.workflow__number { display: block; margin-bottom: var(--space-5); color: var(--color-primary); font-size: var(--font-size-caption); }
.vision-steps { display: grid; gap: var(--space-5); }
.vision-step { padding-top: var(--space-5); border-top: 1px solid var(--color-border); }
.vision-step__label { display: block; margin-bottom: var(--space-3); color: var(--color-primary); font-size: var(--font-size-caption); }

.parameter-table { width: 100%; table-layout: fixed; border-collapse: collapse; border-top: 1px solid var(--color-border); font-size: 15px; line-height: 24px; }
.parameter-table th, .parameter-table td { min-width: 0; padding: var(--space-3); border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: top; overflow-wrap: anywhere; }
.parameter-table th { width: 40%; background: var(--color-surface); color: var(--color-text-subtle-heading); font-weight: var(--weight-label); }
.parameter-table td { background: var(--color-card); color: var(--color-text); font-variant-numeric: tabular-nums; }
.product-detail { display: grid; gap: var(--space-6); }
.product-detail__copy { display: grid; gap: var(--space-5); align-content: start; }
.product-detail__visual { min-width: 0; }
.faq { border-bottom: 1px solid var(--color-border); }
.faq__item { border-top: 1px solid var(--color-border); }
.faq__question { display: flex; width: 100%; min-height: 64px; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-5) var(--space-5); border: 0; background: var(--color-transparent); color: var(--color-text); font-size: 18px; line-height: 28px; font-weight: var(--weight-card-title); text-align: left; cursor: pointer; }
.faq__icon { flex: 0 0 20px; color: var(--color-primary); font-size: 20px; text-align: center; }
.faq__answer { padding: 0 var(--space-5) var(--space-5); color: var(--color-text-secondary); }
.faq__answer[hidden] { display: none; }
.selection-table { display: grid; border-top: 1px solid var(--color-border); }
.selection-table__row { display: grid; gap: var(--space-3); padding: var(--space-5) 0; border-bottom: 1px solid var(--color-border); }
.selection-table__need { color: var(--color-text-subtle-heading); }
.selection-table__answer { color: var(--color-text); }

.lead-layout { display: grid; gap: var(--space-8); align-items: start; }
.lead-copy { display: grid; gap: var(--space-4); }
.lead-form-card { padding: var(--card-padding); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-card); }
.lead-form { display: grid; gap: var(--space-5); }
.field { display: grid; gap: var(--space-2); min-width: 0; }
.field label, .field__label { font-size: 14px; line-height: 22px; font-weight: var(--weight-label); }
.field input, .field select { width: 100%; min-width: 0; min-height: var(--control-height); padding: var(--input-padding-y) var(--input-padding-x); border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); background: var(--color-bg); color: var(--color-text); font: 400 16px/24px var(--font-sans); }
.field input::placeholder { color: var(--color-text-disabled); opacity: 1; }
.field input:hover, .field select:hover { border-color: var(--color-text-tertiary); }
.field input:focus-visible, .field select:focus-visible { border-color: var(--color-primary); outline: 2px solid var(--color-focus); outline-offset: 2px; }
.field [aria-invalid="true"] { border-color: var(--color-danger); }
.field-error { min-height: 0; color: var(--color-danger); font-size: 14px; line-height: 22px; }
.field-error:empty { display: none; }
.form-status { min-height: 0; }
.form-status:empty { display: none; }
.demo-note { color: var(--color-text-tertiary); font-size: var(--font-size-caption); line-height: 20px; }
.lead-success { display: grid; gap: var(--space-4); padding: var(--space-5); border-left: 3px solid var(--color-success); border-radius: var(--radius-md); background: var(--color-success-bg); color: var(--color-success-text); }
.lead-success h3 { color: var(--color-success-text); font-size: 20px; line-height: 28px; font-weight: var(--weight-card-title); }
.qr-placeholder { width: 160px; max-width: 100%; background: var(--color-text); }
.qr-caption { max-width: 280px; color: var(--color-text-tertiary); font-size: var(--font-size-caption); }

.tool-hero { padding-block: var(--space-8); }
.tool-layout { display: grid; gap: var(--space-8); align-items: start; }
.tool-intro { display: grid; gap: var(--space-4); }
.tool-card { padding: var(--card-padding); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); }
.tool-progress__labels { display: flex; justify-content: space-between; gap: var(--space-4); color: var(--color-text-secondary); font-size: 14px; line-height: 22px; }
.tool-progress__track { height: 4px; margin-top: var(--space-3); border-radius: var(--radius-pill); background: var(--color-border); overflow: hidden; }
.tool-progress__fill { width: 33.333%; height: 100%; background: var(--color-primary); transition: width 250ms var(--ease-standard); }
.tool-fieldset { min-width: 0; margin: var(--space-6) 0 0; padding: 0; border: 0; }
.tool-fieldset legend { max-width: 100%; padding: 0; color: var(--color-text); font-size: var(--font-size-h2); line-height: 40px; font-weight: var(--weight-heading); }
.tool-fieldset__help { margin-top: var(--space-3); color: var(--color-text-secondary); }
.tool-options { display: grid; gap: var(--space-4); margin-top: var(--space-5); }
.option-card { position: relative; display: flex; min-width: 0; min-height: 80px; align-items: center; gap: var(--space-4); padding: var(--space-5); border: 1px solid var(--color-border-strong); border-radius: var(--radius-md); background: var(--color-card); color: var(--color-text); cursor: pointer; }
.option-card:hover { border-color: var(--color-primary); background: var(--color-card-hover); }
.option-card:has(input:checked) { border: 2px solid var(--color-primary); padding: 19px; background: var(--color-primary-soft); }
.option-card:has(input:focus-visible) { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.option-card input { width: 20px; height: 20px; flex: 0 0 20px; margin: 0; accent-color: var(--color-primary); }
.option-card__label { display: block; font-size: 17px; line-height: 26px; font-weight: var(--weight-label); }
.option-card__hint { display: block; margin-top: var(--space-1); color: var(--color-text-secondary); font-size: 14px; line-height: 22px; }
.tool-store-name { margin-top: var(--space-5); }
.tool-controls { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); margin-top: var(--space-6); }
.tool-controls .button { width: 100%; padding-inline: var(--space-3); }
.tool-error { margin-top: var(--space-3); color: var(--color-danger); }
.tool-result { padding-top: var(--space-10); }
.result-summary { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-5); padding: 0; list-style: none; }
.result-summary li { margin: 0; }
.result-layout { display: grid; gap: var(--space-6); margin-top: var(--space-8); }
.result-main, .result-sidebar { display: grid; gap: var(--space-6); align-content: start; }
.recommendation-list { display: grid; gap: var(--space-3); }
.recommendation-item { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: var(--space-4); padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-card); }
.recommendation-item__index { color: var(--color-primary); }
.recommendation-item p { margin-top: var(--space-2); color: var(--color-text-secondary); }
.reason-list { display: grid; gap: var(--space-4); margin: 0; padding: 0; list-style: none; }
.reason-list li { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: var(--space-4); margin: 0; }
.reason-list__id { color: var(--color-primary); font-family: var(--font-numeric); font-size: var(--font-size-caption); }
.rule-id { color: var(--color-text-tertiary); font-family: var(--font-numeric); font-size: var(--font-size-micro); letter-spacing: var(--tracking-caption); }
.result-actions { display: flex; flex-direction: column; align-items: stretch; gap: var(--space-3); margin-top: var(--space-8); }
.share-status { margin-top: var(--space-3); color: var(--color-success-text); }
.tool-lead { margin-top: var(--space-10); }
a.card { display: block; color: var(--color-text); text-decoration: none; }
a.card:hover { border-color: var(--color-primary); background: var(--color-card-hover); }
.solution-block.is-active h2 { padding-left: var(--space-4); border-left: 3px solid var(--color-primary); }
dl > div + div { margin-top: var(--space-5); }
dd { margin: var(--space-2) 0 0; }
summary { color: var(--color-text); font-weight: var(--weight-label); }

.site-footer { padding: var(--space-8) 0 var(--space-5); border-top: 1px solid var(--color-border); background: var(--color-surface); }
.footer-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-8) var(--grid-gap); }
.footer-brand, .footer-contact { grid-column: 1 / -1; }
.footer-brand__line { max-width: 360px; color: var(--color-text); font-size: 20px; line-height: 32px; font-weight: var(--weight-heading); }
.footer-brand__slogan { margin-top: var(--space-4); color: var(--color-primary); }
.footer-column h2 { margin-bottom: var(--space-3); color: var(--color-text-subtle-heading); font-size: 14px; line-height: 22px; font-weight: var(--weight-card-title); letter-spacing: 0; }
.footer-links { display: grid; margin: 0; padding: 0; list-style: none; }
.footer-links li { margin: 0; }
.footer-links a { display: flex; min-height: var(--touch-target); align-items: center; color: var(--color-text-secondary); font-size: 14px; line-height: 24px; text-decoration: none; }
.footer-links a:hover { color: var(--color-primary-hover); }
.footer-contact { display: grid; gap: var(--space-5); }
.footer-contact__eyebrow { color: var(--color-primary); font-size: var(--font-size-micro); font-weight: var(--weight-label); letter-spacing: 0.14em; }
.qr-pair { display: flex; flex-wrap: wrap; gap: var(--space-5); }
.qr-item { display: grid; gap: var(--space-2); margin: 0; }
.qr-item img { display: block; width: 144px; height: auto; }
.qr-item figcaption { color: var(--color-text-tertiary); font-size: var(--font-size-micro); letter-spacing: 0.04em; text-align: center; }
.footer-contact__phone { display: grid; gap: var(--space-1); color: var(--color-text-tertiary); font-size: var(--font-size-micro); letter-spacing: 0.04em; }
.footer-contact__phone a { color: var(--color-text); font-family: var(--font-numeric); font-size: 22px; font-variant-numeric: tabular-nums; letter-spacing: 0.02em; text-decoration: none; }
.footer-contact__phone a:hover { color: var(--color-primary-hover); }
@media (min-width: 768px) {
  .footer-grid .footer-contact { grid-column: 1 / -1; grid-template-columns: auto minmax(0, 1fr); align-items: center; column-gap: var(--space-8); }
  .footer-contact__eyebrow { grid-column: 1 / -1; }
  .footer-contact__phone { justify-self: end; padding-left: var(--space-6); border-left: 1px solid var(--color-border); }
}
@media (min-width: 1024px) {
  .footer-grid .footer-contact { column-gap: var(--space-9); }
  .footer-contact__phone { padding-left: var(--space-8); }
}
@media (max-width: 400px) {
  .qr-pair { gap: var(--space-4); }
  .qr-item img { width: 132px; }
}
.footer-legal { margin-top: var(--space-7); padding-top: var(--space-5); border-top: 1px solid var(--color-border); color: var(--color-text-tertiary); font-size: var(--font-size-caption); line-height: 20px; text-align: center; text-wrap: balance; }
.footer-legal a { color: inherit; text-decoration: none; transition: color var(--duration-fast) var(--ease-standard); }
.footer-legal a:hover { color: var(--color-text-secondary); text-decoration: underline; text-underline-offset: 3px; }
.footer-legal__sep { margin-inline: var(--space-2); color: var(--color-border-strong); }
@media (max-width: 767px) {
  .footer-legal__block { display: block; }
  .footer-legal > .footer-legal__sep { display: none; }
}
.floating-cta { position: fixed; inset: auto 0 0; z-index: var(--z-floating-cta); padding: 0 var(--gutter) env(safe-area-inset-bottom); border-top: 1px solid var(--color-border); background: var(--color-scrim-98); box-shadow: var(--shadow-card); transition: opacity var(--duration-fast) var(--ease-standard), visibility var(--duration-fast) var(--ease-standard); }
.floating-cta .button { width: 100%; height: var(--floating-cta-height); }
.floating-cta.is-hidden { visibility: hidden; opacity: 0; pointer-events: none; }

html.js [data-reveal] { opacity: 0; transform: translateY(var(--reveal-distance)); }
html.js [data-reveal].is-visible { opacity: 1; transform: translateY(0); transition: opacity var(--duration-base) var(--ease-standard), transform var(--duration-base) var(--ease-standard); }

@media (max-width: 767px) {
  .hero__copy { width: calc(100% - var(--gutter) - var(--gutter)); max-width: calc(100% - var(--gutter) - var(--gutter)); }
  .hero__actions.button-row { width: 100%; }
}

@media (min-width: 640px) {
  :root { --font-size-hero: 42px; --font-size-h1: 36px; --gutter: 24px; --section-y: 72px; --section-y-large: 80px; --card-padding: 24px; }
  .cards-grid--pain, .cards-grid--value { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .button-row { flex-direction: row; }
  .tool-options { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .result-actions { flex-direction: row; align-items: center; }
}

@media (min-width: 768px) {
  :root { --font-size-hero: 56px; --font-size-h1: 44px; --font-size-h2: 32px; --font-size-h3: 24px; --gutter: 32px; --grid-gap: 20px; --section-y: 80px; --section-y-large: 96px; }
  .grid { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .section__head { margin-bottom: var(--space-8); }
  .section__head--split { grid-template-columns: repeat(8, minmax(0, 1fr)); gap: var(--grid-gap); }
  .section__head--split > :first-child { grid-column: span 3; }
  .section__head--split > :last-child { grid-column: span 5; }
  .hero { display: block; min-height: calc(100svh - var(--nav-height)); }
  .hero__media { position: absolute; inset: 0; height: auto; margin: 0; }
  .hero__media video, .hero__media img { object-position: 70% 50%; filter: brightness(.86) saturate(.82); }
  .hero__media::after { background: linear-gradient(0deg, var(--color-scrim-88) 0%, var(--color-transparent) 32%), linear-gradient(90deg, var(--color-bg) 0%, var(--color-scrim-98) 28%, var(--color-scrim-92) 44%, var(--color-scrim-38) 62%, var(--color-scrim-08) 100%); }
  .hero__content { position: relative; display: flex; min-height: calc(100svh - var(--nav-height)); flex-direction: column; justify-content: space-between; padding-top: var(--space-9); }
  .hero__copy { order: 0; width: auto; max-width: 58%; margin-inline: 0; padding-top: 0; }
  .hero__content > div:last-child { order: 0; width: auto; margin-inline: 0; }
  .hero__actions .button-row { flex-direction: row; }
  .identity-grid { position: relative; grid-template-columns: repeat(2, minmax(0, 1fr)); padding-block: var(--space-8) var(--space-7); }
  .skip-note { position: relative; margin-top: calc(var(--space-7) * -1); }
  .page-hero__copy { grid-column: span 4; }
  .page-hero__visual { grid-column: span 4; margin-top: 0; }
  .cards-grid--pain { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cards-grid--products { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-card { display: grid; grid-template-columns: 3fr 5fr; }
  .case-card__visual { aspect-ratio: auto; min-height: 100%; }
  .case-metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .case-nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .workflow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .poster-journey ol { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .product-detail__copy { order: 0; }
  .parameter-table th, .parameter-table td { padding: var(--space-4) var(--space-5); }
  .parameter-table th { width: 36%; }
  .selection-table__row { grid-template-columns: 5fr 7fr; gap: var(--grid-gap); }
  .footer-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .footer-brand, .footer-contact { grid-column: span 2; }
}

@media (min-width: 1024px) {
  :root { --font-size-hero: 72px; --font-size-h1: 52px; --font-size-h2: 36px; --font-size-h4: 20px; --font-size-body-lg: 18px; --font-size-body: 16px; --font-size-caption: 14px; --gutter: 40px; --grid-gap: 24px; --section-y: 120px; --section-y-large: 144px; --nav-height: 80px; }
  body { padding-bottom: 0; }
  .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .brand__name { font-size: 24px; line-height: 32px; }
  .brand__tagline { display: block; }
  .nav-toggle, .nav-drawer { display: none; }
  .nav-desktop { display: flex; align-items: center; gap: var(--space-6); }
  .nav-desktop__links { display: flex; align-items: center; gap: var(--space-6); }
  .nav-desktop__links a { position: relative; display: inline-flex; min-width: var(--touch-target); min-height: var(--touch-target); align-items: center; justify-content: center; color: var(--color-text); font-size: 15px; line-height: 24px; text-decoration: none; }
  .nav-desktop__links a:hover { color: var(--color-primary-hover); }
  .nav-desktop__links a[aria-current="page"] { color: var(--color-primary); font-weight: var(--weight-label); }
  .nav-desktop__links a[aria-current="page"]::after { content: ""; position: absolute; bottom: 0; left: 50%; width: 24px; height: 2px; background: var(--color-primary); transform: translateX(-50%); }
  .hero__copy { max-width: 50%; padding-top: var(--space-5); }
  .identity-grid { width: 100%; }
  .section__head--split { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .section__head--split > :first-child { grid-column: span 4; }
  .section__head--split > :last-child { grid-column: span 8; }
  .page-hero { padding-block: var(--space-11); }
  .page-hero__copy { grid-column: span 5; }
  .page-hero__visual { grid-column: 7 / -1; }
  .cards-grid--pain { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cards-grid--value { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .cards-grid--cases { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .case-card { display: block; }
  .case-card__visual { aspect-ratio: 16 / 10; min-height: 0; }
  .case-detail { grid-template-columns: 7fr 5fr; }
  .case-section--reverse .case-detail > :first-child { order: 2; }
  .product-detail { grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--grid-gap); align-items: start; }
  .product-detail__visual { grid-column: span 5; }
  .product-detail__copy { grid-column: span 7; }
  .product-detail--reverse .product-detail__visual { grid-column: 1 / span 7; order: 0; }
  .product-detail--reverse .product-detail__copy { grid-column: 8 / -1; }
  .lead-layout { grid-template-columns: 5fr 7fr; gap: var(--grid-gap); }
  .tool-layout { grid-template-columns: 4fr 8fr; gap: var(--grid-gap); }
  .tool-card { padding: var(--space-6); }
  .result-layout { grid-template-columns: 8fr 4fr; gap: var(--grid-gap); }
  .workflow { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .vision-steps { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .topology__nodes { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .poster-journey ol { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 4fr 2fr 2fr 2fr 2fr; }
  .footer-brand, .footer-contact { grid-column: auto; }
  .floating-cta { inset: auto var(--space-5) var(--space-5) auto; padding: 0; border: 0; border-radius: var(--radius-sm); background: var(--color-transparent); box-shadow: none; }
  .floating-cta .button { width: auto; height: var(--control-height); }
}

@media (min-width: 1280px) {
  :root { --font-size-hero: 80px; --font-size-h1: 56px; --font-size-h2: 40px; --section-y: 128px; --section-y-large: 160px; }
}

@media (max-width: 1023px) {
  body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
}

@media (max-width: 639px) {
  .button-row .button { width: 100%; }
  .product-card__points { grid-template-columns: 1fr; }
  .tool-controls { grid-template-columns: 1fr; }
  .tool-controls .button--primary { order: -1; }
  .case-detail__actions .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  html.js [data-reveal], html.js [data-reveal].is-visible { opacity: 1 !important; transform: none !important; }
  [data-parallax] { transform: none !important; }
}