/*
 * 重口｜青碧切片档案
 * 设计提醒：独立电影策展 + DV 影像日志；映纸白为阅读基底，重口青为发现，剪辑红为行动。
 * 任何新增视觉都应加强“可翻阅的影片档案”，而不是稀释为通用圆角卡片站。
 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;800&family=Noto+Serif+SC:wght@500;600;700;900&display=swap');

:root {
  --ink: #17352f;
  --ink-deep: #0b1f1b;
  --paper: #f5f1e8;
  --paper-deep: #e8dfcf;
  --teal: #0ca9a1;
  --teal-bright: #69d4c8;
  --red: #e45b3f;
  --red-deep: #b73d29;
  --muted: #65766f;
  --line: rgba(23, 53, 47, .16);
  --line-light: rgba(245, 241, 232, .22);
  --serif: "Noto Serif SC", "Songti SC", STSong, serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --ease-in-out: cubic-bezier(.77, 0, .175, 1);
  --page: min(1180px, calc(100vw - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--paper); }
body { margin: 0; overflow-x: hidden; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.7; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { border: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
figure, p, h1, h2, h3, h4, h5, h6 { margin-top: 0; }
::selection { background: var(--teal); color: var(--paper); }
.site-shell { width: var(--page); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; top: -4rem; left: 1rem; padding: .7rem 1rem; background: var(--paper); color: var(--ink); box-shadow: 0 8px 20px rgba(0,0,0,.16); transition: top .18s var(--ease-out); }
.skip-link:focus { top: 1rem; }

/* Header, navigation and demo search */
.site-header { position: relative; z-index: 20; background: rgba(245, 241, 232, .96); border-bottom: 1px solid var(--line); }
.site-header__inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand-mark { display: inline-flex; align-items: center; min-width: max-content; gap: .72rem; color: var(--ink); }
.brand-mark img { width: 42px; height: 42px; object-fit: contain; }
.brand-mark__word { display: grid; line-height: 1; }
.brand-mark__word strong { font-family: var(--serif); font-weight: 900; font-size: 1.5rem; letter-spacing: .12em; }
.brand-mark__word small { margin-top: .3rem; color: var(--muted); font-family: var(--mono); font-size: .54rem; letter-spacing: .14em; }
.site-nav { display: flex; align-items: center; justify-content: flex-end; gap: .15rem; }
.site-nav__link, .site-nav__archive { position: relative; padding: .66rem .78rem; font-size: .86rem; font-weight: 600; color: #426159; transition: color .18s var(--ease-out), transform .18s var(--ease-out); }
.site-nav__link span { margin-right: .13rem; color: var(--teal); font-family: var(--mono); font-size: .64rem; letter-spacing: -.03em; }
.site-nav__link::after, .site-nav__archive::after { position: absolute; bottom: .3rem; left: .76rem; right: .76rem; height: 2px; content: ""; transform: scaleX(0); transform-origin: left center; background: var(--red); transition: transform .2s var(--ease-out); }
.site-nav__link:hover, .site-nav__archive:hover, .site-nav__link.is-active, .site-nav__archive.is-active { color: var(--ink-deep); transform: translateY(-1px); }
.site-nav__link:hover::after, .site-nav__archive:hover::after, .site-nav__link.is-active::after, .site-nav__archive.is-active::after { transform: scaleX(1); }
.nav-toggle { display: none; width: 42px; height: 42px; padding: 10px; border: 1px solid var(--line); background: transparent; }
.nav-toggle span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--ink); transition: transform .2s var(--ease-out), opacity .2s var(--ease-out); }
.search-band { border-top: 1px solid rgba(23, 53, 47, .1); background: #ecf0e8; }
.site-search { display: grid; grid-template-columns: auto minmax(210px, 1fr) auto minmax(0, .7fr); align-items: center; gap: .75rem; min-height: 48px; }
.search-band__label { padding-right: .75rem; border-right: 1px solid var(--line); color: var(--teal); font-family: var(--mono); font-size: .7rem; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.site-search input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: .85rem; }
.site-search input::placeholder { color: #799088; }
.site-search button { padding: .28rem .78rem; background: var(--ink); color: var(--paper); font-size: .76rem; font-weight: 700; transition: transform .16s var(--ease-out), background .16s var(--ease-out); }
.site-search button:hover { background: var(--teal); }
.site-search button:active, .mcp-demo button:active, .share-trigger:active { transform: scale(.97); }
.search-demo-result { min-width: 0; overflow: hidden; color: var(--muted); font-size: .74rem; text-overflow: ellipsis; white-space: nowrap; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Global editorial primitives */
.breadcrumb { width: var(--page); margin: 1.5rem auto 0; color: var(--muted); font-size: .76rem; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: .1rem .55rem; padding: 0; margin: 0; list-style: none; }
.breadcrumb li + li::before { margin-right: .55rem; content: "/"; color: var(--teal); }
.breadcrumb a { border-bottom: 1px solid transparent; }
.breadcrumb a:hover { border-color: var(--teal); color: var(--ink); }
.eyebrow { margin-bottom: .64rem; color: var(--teal); font-family: var(--mono); font-size: .68rem; font-weight: 700; letter-spacing: .13em; line-height: 1.4; text-transform: uppercase; }
.section-stamp { display: flex; align-items: center; gap: .68rem; color: var(--muted); font-family: var(--mono); }
.section-stamp span { display: grid; width: 32px; height: 32px; place-items: center; background: var(--ink); color: var(--paper); font-size: .69rem; }
.section-stamp p { margin: 0; font-size: .65rem; letter-spacing: .1em; text-transform: uppercase; }
.section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(210px, .55fr); gap: 2rem; align-items: end; margin-bottom: 2.6rem; }
.section-heading h2 { max-width: 720px; margin: .95rem 0 0; font-family: var(--serif); font-size: clamp(2rem, 4.4vw, 4rem); font-weight: 900; line-height: 1.12; letter-spacing: -.06em; }
.section-heading h2 em { color: var(--teal); font-style: normal; }
.section-heading p { margin: 0; color: #486057; font-size: .96rem; }
.tag-row { display: flex; flex-wrap: wrap; gap: .45rem; }
.tag-row span { display: inline-flex; align-items: center; padding: .22rem .5rem; border: 1px solid var(--line); color: #4b665d; font-size: .7rem; font-weight: 600; }
.tag-row span::before { width: 5px; height: 5px; margin-right: .36rem; content: ""; background: var(--teal); border-radius: 50%; }
.line-link { display: inline-flex; align-items: center; gap: .65rem; color: var(--ink); font-size: .82rem; font-weight: 800; }
.line-link::after { width: 31px; height: 1px; content: ""; background: currentColor; transition: width .2s var(--ease-out); }
.line-link:hover { color: var(--teal); }
.line-link:hover::after { width: 52px; }
.page-section { position: relative; padding: clamp(4.7rem, 9vw, 8rem) 0; }
.page-section--paper { background: var(--paper); }
.page-section--mint { background: #e8eee6; }
.page-section--ink { background: var(--ink-deep); color: var(--paper); }
.page-section--ink .section-heading p { color: #c3d5ca; }
.page-section--ink .section-heading h2 em { color: var(--teal-bright); }
.page-section--ink .section-stamp { color: #afc5b9; }
.page-section--ink .section-stamp span { background: var(--teal); color: var(--ink-deep); }
.page-section--ink .eyebrow { color: var(--teal-bright); }
.page-section--ink .line-link { color: var(--paper); }
.page-section--ink .tag-row span { border-color: var(--line-light); color: #d8e3db; }
.page-section--ink .tag-row span::before { background: var(--red); }
.cut-rule { display: flex; gap: 7px; width: 100%; height: 8px; margin: 0; overflow: hidden; background: var(--ink); }
.cut-rule::before, .cut-rule::after { flex: 1; content: ""; background: repeating-linear-gradient(90deg, var(--paper) 0 18px, transparent 18px 29px); }
.cut-rule--mint { background: #e8eee6; }
.cut-rule--mint::before, .cut-rule--mint::after { background: repeating-linear-gradient(90deg, var(--ink) 0 18px, transparent 18px 29px); }

/* Hero */
.home-hero { position: relative; min-height: 690px; overflow: hidden; background: var(--ink-deep); color: var(--paper); }
.home-hero__image { position: absolute; inset: 0; overflow: hidden; }
.home-hero__image img { width: 100%; height: 100%; object-fit: cover; object-position: 68% center; opacity: .82; transform: scale(1.015); }
.home-hero__image::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg, rgba(8, 28, 24, .98) 0%, rgba(8, 28, 24, .87) 35%, rgba(8, 28, 24, .31) 69%, rgba(8, 28, 24, .24) 100%); }
.home-hero__grain { position: absolute; inset: 0; z-index: 1; pointer-events: none; opacity: .16; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='.7'/%3E%3C/svg%3E"); mix-blend-mode: screen; }
.home-hero__inner { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(280px, .47fr); gap: 3rem; min-height: 690px; align-items: end; padding-top: 5.8rem; padding-bottom: 4rem; }
.hero-copy { max-width: 735px; padding-bottom: .5rem; }
.hero-copy__kicker { display: flex; align-items: center; gap: .75rem; margin-bottom: 1.25rem; color: var(--teal-bright); font-family: var(--mono); font-size: .72rem; letter-spacing: .11em; }
.hero-copy__kicker::before { width: 38px; height: 1px; content: ""; background: var(--teal-bright); }
.hero-copy h1 { margin-bottom: 1.5rem; font-family: var(--serif); font-size: clamp(3.15rem, 7vw, 7.5rem); font-weight: 900; letter-spacing: -.11em; line-height: .94; }
.hero-copy h1 span { display: block; color: var(--teal-bright); }
.hero-copy__lede { max-width: 620px; margin-bottom: 1.7rem; color: #d4e0d8; font-size: clamp(1rem, 1.9vw, 1.23rem); line-height: 1.85; }
.hero-copy__lede strong { color: var(--paper); }
.hero-action-row { display: flex; flex-wrap: wrap; align-items: center; gap: .9rem 1.5rem; }
.hero-button { display: inline-flex; align-items: center; gap: .7rem; padding: .78rem 1rem; background: var(--teal); color: var(--ink-deep); font-size: .86rem; font-weight: 800; transition: transform .17s var(--ease-out), background .17s var(--ease-out); }
.hero-button:hover { background: var(--teal-bright); transform: translateY(-2px); }
.hero-button::after { width: 20px; height: 1px; content: ""; background: currentColor; }
.hero-link { color: #ddede3; font-size: .86rem; font-weight: 700; }
.hero-link:hover { color: var(--teal-bright); }
.hero-sidecard { align-self: end; position: relative; padding: 1.25rem; border: 1px solid rgba(255,255,255,.28); background: rgba(8, 30, 26, .58); backdrop-filter: blur(8px); }
.hero-sidecard::before { position: absolute; top: -1px; right: 17%; width: 44px; height: 4px; content: ""; background: var(--red); }
.hero-sidecard__top { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line-light); }
.hero-sidecard__top p { margin: 0; color: var(--teal-bright); font-family: var(--mono); font-size: .67rem; letter-spacing: .1em; }
.hero-sidecard__top span { padding: .18rem .35rem; background: var(--red); color: white; font-family: var(--mono); font-size: .61rem; letter-spacing: .08em; }
.hero-sidecard h2 { margin: 1.35rem 0 .75rem; font-family: var(--serif); font-size: 1.35rem; line-height: 1.45; }
.hero-sidecard__list { display: grid; gap: .7rem; padding: 0; margin: 0; list-style: none; }
.hero-sidecard__list li { display: flex; justify-content: space-between; gap: 1rem; color: #d5e2da; font-size: .79rem; }
.hero-sidecard__list span:first-child { color: #94b9aa; }
.hero-sidecard__list span:last-child { color: var(--paper); font-family: var(--mono); font-size: .68rem; }
.hero-ticker { position: absolute; right: max(24px, calc((100vw - 1180px)/2)); bottom: 1.2rem; z-index: 3; display: flex; align-items: center; gap: 1rem; color: #b5d0c2; font-family: var(--mono); font-size: .65rem; letter-spacing: .08em; }
.hero-ticker::before { width: 7px; height: 7px; content: ""; background: var(--red); border-radius: 50%; box-shadow: 0 0 0 5px rgba(228,91,63,.16); }

/* Cards and content lanes */
.media-lane { display: grid; grid-template-columns: minmax(250px, .53fr) minmax(0, 1.18fr); gap: clamp(2rem, 5vw, 5.5rem); align-items: start; }
.media-lane__aside { position: sticky; top: 1.5rem; }
.media-lane__aside h2 { margin: 1rem 0 1.2rem; font-family: var(--serif); font-size: clamp(2.25rem, 4.8vw, 4.25rem); font-weight: 900; line-height: 1.06; letter-spacing: -.07em; }
.media-lane__aside h2 strong { color: var(--red); font-weight: inherit; }
.media-lane__aside > p:not(.eyebrow) { color: #4d665d; font-size: .94rem; }
.media-lane__aside .tag-row { margin: 1.5rem 0; }
.media-lane__list { display: grid; gap: 1.25rem; }
.media-card { display: grid; grid-template-columns: minmax(176px, .75fr) minmax(0, 1fr); min-height: 230px; overflow: hidden; border: 1px solid var(--line); background: #fbf9f3; transition: transform .24s var(--ease-out), box-shadow .24s var(--ease-out); }
.media-card:hover { transform: translateY(-5px); box-shadow: 0 15px 32px rgba(23, 53, 47, .14); }
.media-card__visual { position: relative; min-height: 100%; overflow: hidden; background: var(--ink); }
.media-card__visual::before, .media-card__visual::after { position: absolute; z-index: 2; left: 0; width: 10px; height: 100%; content: ""; background: repeating-linear-gradient(180deg, var(--paper) 0 15px, transparent 15px 24px); opacity: .92; }
.media-card__visual::after { right: 0; left: auto; }
.media-card__visual img { width: 100%; height: 100%; min-height: 230px; object-fit: cover; transition: transform .5s var(--ease-out); }
.media-card:hover .media-card__visual img { transform: scale(1.055); }
.media-card__scrim { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(5,22,18,.02), rgba(5,22,18,.55)); transition: background .2s var(--ease-out); }
.media-card:hover .media-card__scrim { background: rgba(7,30,25,.36); }
.play-control { position: absolute; z-index: 3; left: 50%; top: 50%; display: grid; width: 88px; height: 88px; place-items: center; gap: .2rem; padding: .5rem; border: 1px solid rgba(255,255,255,.68); border-radius: 50%; background: rgba(5,26,22,.52); color: white; font-size: .63rem; font-weight: 700; opacity: 0; transform: translate(-50%, -44%) scale(.92); transition: opacity .22s var(--ease-out), transform .22s var(--ease-out), background .22s var(--ease-out); }
.play-control:hover { background: var(--teal); color: var(--ink); }
.media-card:hover .play-control, .media-card:focus-within .play-control { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.play-control__icon { display: block; width: 0; height: 0; margin-left: 3px; border-top: 8px solid transparent; border-bottom: 8px solid transparent; border-left: 13px solid currentColor; }
.media-card__runtime { position: absolute; z-index: 3; left: 1rem; bottom: .8rem; color: #eaf1ec; font-family: var(--mono); font-size: .61rem; letter-spacing: .1em; }
.media-card__body { display: flex; min-width: 0; flex-direction: column; align-items: flex-start; padding: 1.5rem 1.45rem 1.2rem; }
.media-card__body .eyebrow { margin-bottom: .45rem; color: var(--red); }
.media-card__body h3 { margin-bottom: .66rem; font-family: var(--serif); font-size: 1.28rem; line-height: 1.38; }
.media-card__body > p:not(.eyebrow) { margin-bottom: 1.2rem; color: #51675f; font-size: .86rem; line-height: 1.75; }
.media-card__meta { display: flex; flex-wrap: wrap; gap: .4rem .8rem; margin-top: auto; color: var(--muted); font-family: var(--mono); font-size: .61rem; line-height: 1.4; }
.media-card__meta span:first-child { color: var(--teal); }

.feature-split { display: grid; grid-template-columns: minmax(0, .9fr) minmax(270px, .55fr); gap: clamp(2.3rem, 6vw, 7rem); align-items: center; }
.feature-split__image { position: relative; min-height: 500px; overflow: hidden; }
.feature-split__image img { width: 100%; height: 100%; min-height: 500px; object-fit: cover; }
.feature-split__image::after { position: absolute; inset: 0; content: ""; background: linear-gradient(0deg, rgba(9,30,25,.7), transparent 54%); }
.feature-split__badge { position: absolute; z-index: 2; top: 1rem; left: 1rem; padding: .34rem .5rem; background: var(--paper); color: var(--ink); font-family: var(--mono); font-size: .65rem; letter-spacing: .1em; }
.feature-split__caption { position: absolute; z-index: 2; right: 1.15rem; bottom: 1rem; left: 1.15rem; color: var(--paper); font-family: var(--mono); font-size: .67rem; letter-spacing: .09em; }
.feature-split__copy h2 { margin: .9rem 0 1.15rem; font-family: var(--serif); font-size: clamp(2.25rem, 4.6vw, 4.1rem); line-height: 1.13; letter-spacing: -.075em; }
.feature-split__copy > p:not(.eyebrow) { color: #d3e1d8; font-size: 1rem; }
.feature-split__copy--paper { color: var(--ink); }
.feature-split__copy--paper > p:not(.eyebrow) { color: #50675d; }
.worklist { display: grid; gap: 0; margin: 2rem 0; border-top: 1px solid var(--line-light); }
.worklist li { display: grid; grid-template-columns: 32px 1fr; gap: .9rem; padding: .85rem 0; border-bottom: 1px solid var(--line-light); color: #dbe8e0; font-size: .86rem; list-style: none; }
.worklist li span { color: var(--teal-bright); font-family: var(--mono); font-size: .66rem; }

.ai-console { display: grid; grid-template-columns: minmax(0, .6fr) minmax(280px, .9fr); gap: 0; min-height: 560px; border: 1px solid rgba(255,255,255,.25); background: #0e2924; }
.ai-console__image { position: relative; min-height: 100%; overflow: hidden; }
.ai-console__image img { width: 100%; height: 100%; min-height: 560px; object-fit: cover; }
.ai-console__image::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg, rgba(11,31,27,.04), rgba(11,31,27,.62)); }
.ai-console__console { padding: clamp(1.5rem, 4vw, 3.5rem); }
.ai-console__console h2 { margin: .9rem 0 1.5rem; font-family: var(--serif); font-size: clamp(2.05rem, 3.8vw, 3.65rem); line-height: 1.15; letter-spacing: -.06em; }
.ai-list { display: grid; gap: .75rem; padding: 0; margin: 0; list-style: none; }
.ai-list li { display: grid; grid-template-columns: 28px 1fr; gap: .75rem; padding: .82rem 0; border-bottom: 1px solid var(--line-light); }
.ai-list li > span { display: grid; width: 25px; height: 25px; place-items: center; background: var(--teal); color: var(--ink); font-family: var(--mono); font-size: .64rem; font-weight: 800; }
.ai-list h3 { margin: 0 0 .22rem; font-family: var(--serif); font-size: 1.06rem; }
.ai-list p { margin: 0; color: #bfcec6; font-size: .79rem; line-height: 1.7; }

.community-thread { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(250px, .6fr); gap: 0; min-height: 540px; background: #e8eee6; }
.community-thread__image { position: relative; min-height: 540px; overflow: hidden; }
.community-thread__image img { width: 100%; height: 100%; min-height: 540px; object-fit: cover; }
.community-thread__image::after { position: absolute; inset: 0; content: ""; background: linear-gradient(0deg, rgba(10,30,25,.68), rgba(10,30,25,.03) 56%); }
.community-thread__copy { padding: clamp(1.6rem, 4.5vw, 3.9rem); }
.community-thread__copy h2 { margin: .8rem 0 1.2rem; font-family: var(--serif); font-size: clamp(2rem, 4.2vw, 3.8rem); line-height: 1.14; letter-spacing: -.07em; }
.community-thread__copy > p:not(.eyebrow) { color: #536a61; font-size: .9rem; }
.thread-chip { display: flex; gap: .75rem; padding: .85rem 0; border-top: 1px solid var(--line); }
.thread-chip span { color: var(--red); font-family: var(--mono); font-size: .7rem; }
.thread-chip h3 { margin: 0 0 .1rem; font-size: .94rem; }
.thread-chip p { margin: 0; color: #60736b; font-size: .75rem; line-height: 1.65; }

/* Social proof / factual caution modules */
.demo-notice { display: grid; grid-template-columns: 12px 1fr; gap: .8rem; align-items: start; padding: 1rem 1.15rem; border-left: 2px solid var(--red); background: #f2e8dc; color: var(--ink); }
.demo-notice__dot { width: 8px; height: 8px; margin-top: .52rem; background: var(--red); border-radius: 50%; }
.demo-notice strong { display: block; margin-bottom: .2rem; font-size: .84rem; }
.demo-notice p { margin: 0; color: #5f675c; font-size: .76rem; line-height: 1.65; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 3.3rem; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.trust-card { min-height: 220px; padding: 1.3rem 1.25rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #f8f5ee; }
.trust-card__number { color: var(--teal); font-family: var(--mono); font-size: .72rem; }
.trust-card h3 { margin: .8rem 0 .55rem; font-family: var(--serif); font-size: 1.3rem; }
.trust-card p { margin: 0; color: #55685f; font-size: .8rem; line-height: 1.7; }
.testimonial-empty { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; align-items: center; padding: clamp(1.5rem, 4vw, 3rem); margin-top: 2rem; border: 1px dashed rgba(245,241,232,.38); }
.testimonial-empty h3 { margin: .55rem 0 0; font-family: var(--serif); font-size: clamp(1.6rem, 3vw, 2.4rem); }
.testimonial-empty p { margin: 0; color: #c2d3c9; font-size: .9rem; }
.proof-stamp { display: grid; width: min(210px, 100%); min-height: 130px; place-items: center; border: 1px solid rgba(105,212,200,.65); color: var(--teal-bright); font-family: var(--mono); font-size: .69rem; letter-spacing: .09em; line-height: 1.8; text-align: center; transform: rotate(-3deg); }

/* FAQ / how-to */
.howto-rail { display: grid; grid-template-columns: .6fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.howto-rail__intro { position: sticky; top: 1rem; }
.howto-rail__intro h2 { margin: .9rem 0 1rem; font-family: var(--serif); font-size: clamp(2.1rem, 4.3vw, 3.9rem); line-height: 1.1; letter-spacing: -.07em; }
.howto-rail__intro p { color: #52685f; font-size: .92rem; }
.howto-steps { padding: 0; margin: 0; list-style: none; counter-reset: steps; }
.howto-steps li { display: grid; grid-template-columns: 78px 1fr; gap: 1rem; padding: 1.45rem 0; border-top: 1px solid var(--line); }
.howto-steps li:last-child { border-bottom: 1px solid var(--line); }
.howto-steps span { color: var(--red); font-family: var(--mono); font-size: 1rem; font-weight: 800; }
.howto-steps h3 { margin: 0 0 .36rem; font-family: var(--serif); font-size: 1.3rem; }
.howto-steps p { margin: 0; color: #5a6e66; font-size: .86rem; }
.faq-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; }
.faq-item { border: 1px solid var(--line); background: #fbf9f3; }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.15rem 1.2rem; color: var(--ink); cursor: pointer; font-family: var(--serif); font-size: 1.02rem; font-weight: 700; line-height: 1.5; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { flex: 0 0 auto; width: 22px; height: 22px; content: "+"; color: var(--teal); font-family: var(--mono); font-size: 1.25rem; line-height: 20px; text-align: center; }
.faq-item[open] summary::after { content: "−"; color: var(--red); }
.faq-item div { padding: 0 1.2rem 1.15rem; color: #52675f; font-size: .85rem; line-height: 1.85; }

/* Internal page intro and structured cards */
.page-hero { position: relative; overflow: hidden; background: var(--ink-deep); color: var(--paper); }
.page-hero::before { position: absolute; top: -17vw; right: -12vw; width: 55vw; height: 55vw; content: ""; border: 1px solid rgba(105,212,200,.27); border-radius: 50%; box-shadow: 0 0 0 34px rgba(105,212,200,.035), 0 0 0 70px rgba(105,212,200,.025); }
.page-hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(230px, .45fr); gap: 2rem; align-items: end; min-height: 380px; padding-top: 4rem; padding-bottom: 3.8rem; }
.page-hero__inner h1 { max-width: 760px; margin: .9rem 0 1rem; font-family: var(--serif); font-size: clamp(3rem, 6.5vw, 6.3rem); line-height: .96; letter-spacing: -.1em; }
.page-hero__inner h1 span { color: var(--teal-bright); }
.page-hero__inner > div > p:not(.eyebrow) { max-width: 610px; color: #d0e0d7; font-size: 1rem; }
.page-hero__meta { padding: 1.1rem; border: 1px solid var(--line-light); background: rgba(17,49,43,.72); }
.page-hero__meta p { margin: 0; color: #afc7bb; font-family: var(--mono); font-size: .67rem; letter-spacing: .08em; }
.page-hero__meta strong { display: block; margin: .7rem 0 .3rem; color: var(--paper); font-family: var(--serif); font-size: 1.45rem; line-height: 1.4; }
.page-hero__meta span { color: var(--teal-bright); font-family: var(--mono); font-size: .63rem; }
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.article-card { display: flex; min-height: 250px; flex-direction: column; justify-content: space-between; padding: 1.35rem; border-top: 3px solid var(--teal); background: #fbfaf5; box-shadow: inset 0 0 0 1px var(--line); transition: transform .2s var(--ease-out), box-shadow .2s var(--ease-out); }
.article-card:hover { transform: translateY(-4px); box-shadow: inset 0 0 0 1px var(--line), 0 14px 28px rgba(23,53,47,.12); }
.article-card:nth-child(3n + 2) { border-top-color: var(--red); }
.article-card__label { color: var(--teal); font-family: var(--mono); font-size: .64rem; letter-spacing: .1em; }
.article-card h2, .article-card h3 { margin: .85rem 0 .6rem; font-family: var(--serif); font-size: 1.5rem; line-height: 1.35; }
.article-card p { margin: 0; color: #566b62; font-size: .84rem; line-height: 1.75; }
.article-card__foot { display: flex; justify-content: space-between; gap: .8rem; padding-top: 1.2rem; color: var(--muted); font-family: var(--mono); font-size: .61rem; }
.tool-rail { display: grid; grid-template-columns: 1fr minmax(270px, .7fr); gap: 2rem; }
.editorial-title { margin: 1rem 0 1.4rem; font-family: var(--serif); font-size: clamp(2.2rem, 4.5vw, 4rem); line-height: 1.1; letter-spacing: -.07em; }
.tool-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }
.tool-list li { display: grid; grid-template-columns: 52px 1fr auto; gap: 1.15rem; align-items: center; padding: 1.12rem .1rem; border-bottom: 1px solid var(--line); }
.tool-list li > span { color: var(--red); font-family: var(--mono); font-size: .7rem; font-weight: 700; }
.tool-list h2, .tool-list h3 { margin: 0 0 .12rem; font-family: var(--serif); font-size: 1.22rem; }
.tool-list p { margin: 0; color: #5e736a; font-size: .78rem; }
.tool-list button { padding: .42rem .65rem; background: var(--ink); color: var(--paper); font-size: .7rem; font-weight: 700; transition: background .17s var(--ease-out), transform .17s var(--ease-out); }
.tool-list button:hover { background: var(--teal); color: var(--ink); }
.side-information { padding: 1.5rem; border: 1px solid var(--line); background: #e9eee7; }
.side-information h2 { margin: .75rem 0; font-family: var(--serif); font-size: 1.5rem; }
.side-information p { color: #51655d; font-size: .84rem; }
.side-information ul { display: grid; gap: .7rem; padding: 0; margin: 1.1rem 0 0; list-style: none; }
.side-information li { padding-left: 1rem; color: #51655d; font-size: .79rem; }
.side-information li::before { display: inline-block; width: .38rem; height: .38rem; margin-left: -1rem; margin-right: .62rem; content: ""; background: var(--teal); }
.contact-slab { display: grid; grid-template-columns: minmax(0, 1fr) minmax(270px, .65fr); gap: 0; border: 1px solid var(--line); background: #fbfaf5; }
.contact-slab__copy { padding: clamp(1.5rem, 4vw, 3.2rem); }
.contact-slab__copy h2 { margin: .8rem 0 1rem; font-family: var(--serif); font-size: clamp(2rem, 4.3vw, 3.8rem); line-height: 1.1; letter-spacing: -.07em; }
.contact-slab__copy p { color: #546961; font-size: .9rem; }
.contact-list { display: grid; padding: 0; margin: 1.7rem 0 0; list-style: none; border-top: 1px solid var(--line); }
.contact-list li { display: grid; grid-template-columns: 100px 1fr; gap: 1rem; padding: .76rem 0; border-bottom: 1px solid var(--line); font-size: .85rem; }
.contact-list span { color: var(--muted); font-family: var(--mono); font-size: .68rem; }
.contact-slab__art { position: relative; min-height: 340px; overflow: hidden; background: linear-gradient(145deg, var(--ink), #316258); }
.contact-slab__art::before { position: absolute; inset: 11% 11%; content: ""; border: 1px solid rgba(105,212,200,.65); transform: rotate(-9deg); }
.contact-slab__art::after { position: absolute; right: 14%; bottom: 13%; width: 46%; height: 46%; content: ""; border: 14px solid var(--teal); border-radius: 50%; box-shadow: -26px -26px 0 rgba(228,91,63,.95); }
.contact-slab__art span { position: absolute; z-index: 2; top: 14%; left: 12%; max-width: 54%; color: var(--paper); font-family: var(--serif); font-size: 1.55rem; font-weight: 700; line-height: 1.5; }

/* Footer */
.site-footer { overflow: hidden; background: #0b211c; color: var(--paper); }
.footer-ribbon { display: flex; justify-content: space-between; gap: 1.5rem; padding: .62rem max(24px, calc((100vw - 1180px)/2)); background: var(--teal); color: var(--ink); font-family: var(--mono); font-size: .63rem; font-weight: 700; letter-spacing: .08em; }
.footer-ribbon p { margin: 0; }
.site-footer__grid { display: grid; grid-template-columns: 1.15fr .95fr 1fr; gap: clamp(1.8rem, 4vw, 4rem); padding: 4rem 0 2.4rem; }
.site-footer .brand-mark { color: var(--paper); }
.site-footer .brand-mark__word small { color: #a9c8ba; }
.footer-brand h2, .footer-contact h2, .footer-qr h2 { margin: 1.25rem 0 .75rem; font-family: var(--serif); font-size: 1.23rem; line-height: 1.5; }
.footer-brand > p { max-width: 405px; margin-bottom: 1rem; color: #bdd1c6; font-size: .81rem; line-height: 1.85; }
.footer-tags { display: flex; flex-wrap: wrap; gap: .36rem; }
.footer-tags span { padding: .22rem .44rem; border: 1px solid rgba(245,241,232,.28); color: #cde0d5; font-size: .64rem; }
.footer-contact dl { display: grid; gap: .66rem; margin: 0; }
.footer-contact dl div { display: grid; grid-template-columns: 88px 1fr; gap: .6rem; font-size: .76rem; }
.footer-contact dt { color: #94b7a7; }
.footer-contact dd { margin: 0; color: #e5eee8; }
.footer-contact a:hover { color: var(--teal-bright); }
.footer-contact em { margin-left: .35rem; color: var(--red); font-family: var(--mono); font-size: .58rem; font-style: normal; }
.footer-contact__note { margin: 1.1rem 0 0; color: #91ab9e; font-size: .66rem; line-height: 1.65; }
.qr-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .85rem; }
.qr-demo { position: relative; aspect-ratio: 1; overflow: hidden; background-color: var(--paper); background-image: linear-gradient(90deg, transparent 46%, #0b211c 46% 57%, transparent 57%), linear-gradient(0deg, transparent 45%, #0b211c 45% 59%, transparent 59%), repeating-linear-gradient(90deg, #0b211c 0 8%, transparent 8% 17%), repeating-linear-gradient(0deg, #0b211c 0 7%, transparent 7% 16%); background-size: 100% 100%, 100% 100%, 31% 31%, 25% 25%; background-position: center, center, 9% 87%, 86% 11%; background-repeat: no-repeat; }
.qr-demo::before, .qr-demo::after { position: absolute; width: 28%; aspect-ratio: 1; content: ""; border: 7px solid var(--ink); background: var(--paper); box-shadow: inset 0 0 0 6px var(--paper), inset 0 0 0 14px var(--teal); }
.qr-demo::before { top: 9%; left: 9%; }
.qr-demo::after { right: 9%; bottom: 9%; border-color: var(--red); box-shadow: inset 0 0 0 6px var(--paper), inset 0 0 0 14px var(--ink); }
.qr-demo--business { filter: hue-rotate(18deg); }
.qr-card p { margin: .58rem 0 .12rem; color: #e5eee8; font-size: .68rem; line-height: 1.4; }
.qr-card small { color: #8fae9f; font-size: .59rem; line-height: 1.4; }
.mcp-demo { display: flex; align-items: end; justify-content: space-between; gap: 1.3rem; padding: 1.45rem; border-top: 1px solid rgba(245,241,232,.16); border-bottom: 1px solid rgba(245,241,232,.16); background: rgba(105,212,200,.06); }
.mcp-demo h2 { margin: .4rem 0; font-family: var(--serif); font-size: 1.3rem; }
.mcp-demo p:not(.eyebrow) { max-width: 720px; margin: 0; color: #b7cfc2; font-size: .76rem; }
.mcp-demo button { flex: 0 0 auto; padding: .7rem .85rem; background: var(--teal); color: var(--ink); font-size: .75rem; font-weight: 800; }
.mcp-demo button:hover { background: var(--teal-bright); }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 0 1.25rem; color: #93ae9f; font-family: var(--mono); font-size: .62rem; letter-spacing: .03em; }
.footer-bottom p { margin: 0; }
.share-trigger { padding: 0; background: transparent; color: #d6e5dc; font-size: .62rem; font-weight: 700; }
.share-trigger:hover { color: var(--teal-bright); }

/* Modals and live feedback */
.demo-dialog { width: min(470px, calc(100vw - 32px)); padding: 0; overflow: hidden; border: 1px solid rgba(105,212,200,.42); background: var(--ink-deep); color: var(--paper); box-shadow: 0 28px 80px rgba(0,0,0,.42); }
.demo-dialog::backdrop { background: rgba(4,16,13,.76); backdrop-filter: blur(3px); }
.demo-dialog > p, .demo-dialog h2 { margin-right: 1.6rem; margin-left: 1.6rem; }
.demo-dialog > .eyebrow { margin-top: 1.6rem; }
.demo-dialog h2 { margin-bottom: 1rem; font-family: var(--serif); font-size: 2rem; }
.demo-dialog > p:last-child { margin-bottom: 1.7rem; color: #c3d8cb; font-size: .84rem; line-height: 1.8; }
.demo-dialog__close { position: absolute; top: .7rem; right: .75rem; width: 34px; height: 34px; background: transparent; color: var(--paper); font-size: 1.75rem; line-height: 1; }
.demo-dialog__close:hover { color: var(--teal-bright); }
.demo-dialog__screen { display: grid; min-height: 208px; place-items: center; margin: 0 1.6rem 1.35rem; background: repeating-linear-gradient(120deg, rgba(105,212,200,.07) 0 7px, transparent 7px 18px), #123a32; }
.demo-dialog__screen .play-control__icon { color: var(--teal-bright); transform: scale(2.4); }
.toast { position: fixed; z-index: 60; right: 22px; bottom: 22px; max-width: min(360px, calc(100vw - 44px)); padding: .78rem 1rem; background: var(--ink); color: var(--paper); box-shadow: 0 12px 28px rgba(0,0,0,.18); font-size: .78rem; opacity: 0; pointer-events: none; transform: translateY(12px); transition: opacity .18s var(--ease-out), transform .18s var(--ease-out); }
.toast.is-visible { opacity: 1; transform: translateY(0); }

/* Content verification: reinforces the site’s 青碧切片档案 philosophy with visible, factual editorial metadata. */
.verification-panel { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); gap: 1.7rem 2.4rem; margin-top: 2.2rem; padding: 1.55rem; border: 1px solid rgba(23,53,47,.18); border-left: 4px solid var(--teal); background: linear-gradient(120deg, rgba(208,240,232,.52), rgba(255,253,246,.92)); box-shadow: 10px 10px 0 rgba(23,53,47,.06); }
.verification-panel h2 { margin: .45rem 0 .75rem; color: var(--ink); font-family: var(--serif); font-size: clamp(1.5rem, 3vw, 2.15rem); line-height: 1.18; }
.verification-panel > div > p:last-child { margin: 0; max-width: 66ch; color: var(--ink-soft); line-height: 1.8; }
.verification-panel__facts { display: grid; gap: .7rem; margin: 0; }
.verification-panel__facts div { padding-bottom: .65rem; border-bottom: 1px solid rgba(23,53,47,.14); }
.verification-panel__facts dt { margin-bottom: .18rem; color: var(--teal); font-family: var(--mono); font-size: .63rem; letter-spacing: .07em; text-transform: uppercase; }
.verification-panel__facts dd { margin: 0; color: var(--ink); font-size: .78rem; line-height: 1.65; }
.verification-panel .line-link { grid-column: 1 / -1; justify-self: start; }
.footer-bottom small { margin-left: .25rem; color: #9eb4a7; font-size: .58rem; }

/* Motion and responsive */
@media (prefers-reduced-motion: no-preference) {
  .home-hero__image img { animation: hero-shift 11s var(--ease-in-out) infinite alternate; }
  .hero-ticker::before { animation: pulse-dot 1.8s ease-out infinite; }
  .media-card, .article-card { animation: reveal-card .5s var(--ease-out) both; }
}
@keyframes hero-shift { from { transform: scale(1.015) translateX(0); } to { transform: scale(1.05) translateX(-.8%); } }
@keyframes pulse-dot { 0%, 100% { box-shadow: 0 0 0 0 rgba(228,91,63,.42); } 60% { box-shadow: 0 0 0 8px rgba(228,91,63,0); } }
@keyframes reveal-card { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 1020px) {
  :root { --page: min(100% - 34px, 920px); }
  .site-nav__link { padding-inline: .45rem; font-size: .78rem; }
  .site-nav__archive { padding-inline: .45rem; }
  .home-hero, .home-hero__inner { min-height: 630px; }
  .home-hero__inner { grid-template-columns: minmax(0, 1fr) 250px; gap: 1.8rem; }
  .media-lane { grid-template-columns: 1fr; }
  .media-lane__aside { position: static; max-width: 670px; }
  .media-lane__aside h2 { font-size: clamp(2.4rem, 7vw, 4.25rem); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .footer-qr { grid-column: span 2; max-width: 450px; }
}

@media (max-width: 760px) {
  :root { --page: min(100% - 30px, 640px); }
  body { font-size: 15px; }
  .site-header__inner { min-height: 67px; }
  .brand-mark img { width: 36px; height: 36px; }
  .brand-mark__word strong { font-size: 1.28rem; }
  .nav-toggle { display: block; }
  .site-nav { position: absolute; top: 67px; right: 0; left: 0; display: grid; gap: 0; max-height: 0; overflow: hidden; background: var(--paper); border-bottom: 1px solid transparent; opacity: 0; transition: max-height .3s var(--ease-out), opacity .2s var(--ease-out), border-color .2s var(--ease-out); }
  .nav-open .site-nav { max-height: 400px; border-color: var(--line); opacity: 1; }
  .site-nav__link, .site-nav__archive { padding: .83rem max(15px, calc((100vw - min(100% - 30px, 640px))/2)); border-bottom: 1px solid rgba(23,53,47,.1); font-size: .86rem; }
  .site-nav__link::after, .site-nav__archive::after { display: none; }
  .site-search { grid-template-columns: auto minmax(0, 1fr) auto; gap: .5rem; min-height: 47px; }
  .search-band__label { display: none; }
  .search-demo-result { display: none; }
  .site-search button { padding-inline: .55rem; font-size: .67rem; }
  .breadcrumb { margin-top: 1.05rem; }
  .section-heading { grid-template-columns: 1fr; gap: .85rem; margin-bottom: 2rem; }
  .home-hero, .home-hero__inner { min-height: 620px; }
  .home-hero__image img { object-position: 63% center; }
  .home-hero__image::after { background: linear-gradient(90deg, rgba(8,28,24,.97) 0%, rgba(8,28,24,.87) 52%, rgba(8,28,24,.36) 100%); }
  .home-hero__inner { display: flex; flex-direction: column; align-items: stretch; justify-content: flex-end; gap: 1.2rem; padding-top: 5rem; padding-bottom: 2.2rem; }
  .hero-copy h1 { font-size: clamp(3rem, 15vw, 4.7rem); }
  .hero-copy__lede { max-width: 90%; font-size: .95rem; }
  .hero-sidecard { align-self: stretch; padding: 1rem; }
  .hero-sidecard h2 { margin: .8rem 0 .65rem; font-size: 1.08rem; }
  .hero-sidecard__list { grid-template-columns: repeat(2, 1fr); gap: .46rem 1rem; }
  .hero-sidecard__list li { display: block; font-size: .68rem; }
  .hero-sidecard__list span:last-child { display: block; margin-top: .18rem; }
  .hero-ticker { display: none; }
  .page-section { padding: 4.2rem 0; }
  .media-card { grid-template-columns: 1fr; }
  .media-card__visual, .media-card__visual img { min-height: 220px; }
  .media-card__body { min-height: 208px; }
  .play-control { opacity: 1; transform: translate(-50%, -50%) scale(.9); }
  .feature-split, .ai-console, .community-thread, .testimonial-empty, .howto-rail, .tool-rail, .contact-slab { grid-template-columns: 1fr; }
  .feature-split__image, .feature-split__image img { min-height: 340px; }
  .feature-split__copy { padding-top: 0; }
  .ai-console__image, .ai-console__image img { min-height: 320px; }
  .ai-console__console { padding: 1.5rem; }
  .community-thread__image, .community-thread__image img { min-height: 300px; }
  .community-thread__copy { padding: 1.5rem; }
  .testimonial-empty { gap: 1.3rem; }
  .trust-grid { grid-template-columns: 1fr; margin-top: 2.2rem; }
  .trust-card { min-height: 170px; }
  .faq-grid { grid-template-columns: 1fr; }
  .page-hero__inner { grid-template-columns: 1fr; min-height: 355px; padding-top: 3rem; padding-bottom: 2.5rem; }
  .page-hero__inner h1 { font-size: clamp(3rem, 13vw, 5rem); }
  .page-hero__meta { display: none; }
  .article-grid { grid-template-columns: 1fr; }
  .article-card { min-height: 205px; }
  .tool-list li { grid-template-columns: 36px 1fr; gap: .7rem; }
  .tool-list button { grid-column: 2; justify-self: start; }
  .site-footer__grid { grid-template-columns: 1fr; padding-top: 3.2rem; }
  .footer-qr { grid-column: auto; }
  .footer-ribbon { display: block; padding-block: .55rem; }
  .footer-ribbon p + p { display: none; }
  .mcp-demo { display: grid; align-items: start; }
  .mcp-demo button { justify-self: start; }
  .footer-bottom { display: grid; grid-template-columns: 1fr 1fr; }
  .share-trigger { justify-self: end; }
  .verification-panel { grid-template-columns: 1fr; gap: 1.1rem; padding: 1.15rem; }
}

@media (max-width: 380px) {
  .brand-mark__word small { display: none; }
  .hero-copy__lede { max-width: 100%; }
  .hero-sidecard__list { grid-template-columns: 1fr; }
  .footer-bottom { grid-template-columns: 1fr; }
  .share-trigger { justify-self: start; }
}