/* =====================================================================
   AI Collaboration Platform - landing page 20260728a
   Giao diện SÁNG. Không phụ thuộc font hay script từ mạng ngoài,
   mở thẳng bằng file:// trong mạng nội bộ vẫn chạy đủ.
   ===================================================================== */

:root {
    /* nền */
    --bg: #ffffff;
    --bg-soft: #f5f8fc;
    --bg-tint: #eef4ff;
    --bg-panel: #ffffff;

    /* chữ */
    --ink: #0f1b33;
    --ink-2: #38455f;
    --ink-3: #67748c;

    /* thương hiệu */
    --brand: #2563eb;
    --brand-dark: #1d4ed8;
    --brand-soft: #e5edff;
    --cyan: #0891b2;
    --cyan-soft: #e0f5fa;
    --grad: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);

    /* phụ trợ */
    --line: #e3e9f2;
    --line-soft: #eef2f8;
    --ok: #0f9d58;
    --ok-soft: #e8f6ee;
    --warn: #b7791f;
    --warn-soft: #fdf4e3;

    --r-sm: 8px;
    --r: 14px;
    --r-lg: 20px;
    --shadow-sm: 0 1px 2px rgba(15, 27, 51, .05), 0 2px 8px rgba(15, 27, 51, .04);
    --shadow: 0 4px 12px rgba(15, 27, 51, .06), 0 12px 32px rgba(15, 27, 51, .07);
    --shadow-lg: 0 18px 48px rgba(15, 27, 51, .14);

    --wrap: 1180px;
    --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Noto Sans JP", "Yu Gothic", "Hiragino Sans", Meiryo, sans-serif;
    --mono: "JetBrains Mono", "Cascadia Code", Consolas, "Courier New", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
    margin: 0;
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.65;
    color: var(--ink-2);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

h1, h2, h3, h4 {
    color: var(--ink); line-height: 1.25; margin: 0; letter-spacing: -.015em;
    /* Tiếng Nhật: cấm ngắt dòng ngay trước dấu kéo dài và kana nhỏ,
       nếu không tiêu đề sẽ rớt kiểu "パートナ / ーが" trông rất gãy. */
    line-break: strict;
    text-wrap: balance;
}
/* Chữ Nhật rộng hơn chữ Latin ở cùng cỡ, nên hạ cỡ tiêu đề lớn lại một nhịp. */
:lang(ja) h1, :lang(ja) h2 { letter-spacing: 0; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.sec { padding: 84px 0; }
.sec--soft { background: var(--bg-soft); }
.sec--tint { background: linear-gradient(180deg, #f7fafe 0%, #eef4ff 100%); }

.sec-head { max-width: 720px; margin: 0 0 44px; }
.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head h2 { font-size: clamp(1.75rem, 3.2vw, 2.4rem); font-weight: 800; }
.sec-head p { margin: 14px 0 0; font-size: 1.0625rem; color: var(--ink-3); }

.eyebrow {
    display: inline-block;
    margin: 0 0 14px;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--brand);
}

/* ---------- nút ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 22px;
    border-radius: 999px;
    font-weight: 600; font-size: .9375rem;
    border: 1px solid transparent;
    white-space: nowrap;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--grad); color: #fff; box-shadow: 0 6px 18px rgba(37, 99, 235, .28); }
.btn--primary:hover { box-shadow: 0 10px 26px rgba(37, 99, 235, .34); }
.btn--ghost { background: #fff; color: var(--ink); border-color: var(--line); box-shadow: var(--shadow-sm); }
.btn--ghost:hover { border-color: #c9d6ea; }
.btn svg { width: 17px; height: 17px; flex: none; }

/* =====================================================================
   Header
   ===================================================================== */
.hdr {
    position: sticky; top: 0; z-index: 60;
    background: rgba(255, 255, 255, .88);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--line-soft);
}
.hdr__in { display: flex; align-items: center; gap: 20px; height: 66px; }

.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand__tile {
    width: 32px; height: 32px; border-radius: 9px;
    background: var(--grad);
    display: grid; place-items: center;
    color: #fff; font-size: 12px; font-weight: 800; letter-spacing: .02em;
    box-shadow: 0 3px 10px rgba(37, 99, 235, .3);
}
.brand__name { font-size: .9375rem; font-weight: 700; color: var(--ink); white-space: nowrap; }
.brand__name span { display: block; font-size: .6875rem; font-weight: 500; color: var(--ink-3); letter-spacing: .02em; }

.nav { display: flex; gap: 22px; margin-left: 14px; font-size: .875rem; font-weight: 500; color: var(--ink-3); }
.nav a { padding: 4px 0; border-bottom: 2px solid transparent; white-space: nowrap; }
.nav a:hover { color: var(--brand); border-bottom-color: var(--brand); }

.hdr__right { display: flex; align-items: center; gap: 12px; margin-left: auto; }

.lang { display: flex; gap: 2px; padding: 3px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 999px; }
.lang button {
    display: flex; align-items: center; gap: 6px;
    padding: 5px 11px; border: 0; border-radius: 999px;
    background: none; color: var(--ink-3);
    font-size: .75rem; font-weight: 700; letter-spacing: .03em;
    cursor: pointer; transition: background .15s ease, color .15s ease;
}
.lang button:hover { color: var(--ink); }
.lang button[aria-pressed="true"] { background: #fff; color: var(--ink); box-shadow: var(--shadow-sm); }
.lang .flag { width: 18px; height: 13px; border-radius: 2px; flex: none; box-shadow: 0 0 0 1px rgba(15, 27, 51, .1); }

.hdr__cta { padding: 9px 18px; font-size: .875rem; }

.burger { display: none; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 10px; background: #fff; cursor: pointer; }
.burger span { display: block; width: 16px; height: 1.5px; margin: 3px auto; background: var(--ink); }

/* =====================================================================
   Hero
   ===================================================================== */
.hero {
    position: relative;
    padding: 74px 0 64px;
    background:
        radial-gradient(900px 420px at 78% 8%, #e2f2fb 0%, rgba(226, 242, 251, 0) 62%),
        radial-gradient(760px 400px at 6% 6%, #e8edff 0%, rgba(232, 237, 255, 0) 60%),
        #fbfcff;
    border-bottom: 1px solid var(--line-soft);
    overflow: hidden;
}
.hero__in { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: 52px; align-items: center; }

.badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 14px 6px 8px;
    background: #fff; border: 1px solid var(--line); border-radius: 999px;
    font-size: .75rem; font-weight: 600; color: var(--ink-2);
    box-shadow: var(--shadow-sm);
}
.badge i { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); margin-left: 6px; box-shadow: 0 0 0 3px var(--ok-soft); }

.hero h1 {
    margin: 22px 0 18px;
    font-size: clamp(2.2rem, 4.6vw, 3.4rem);
    font-weight: 800;
    letter-spacing: -.03em;
    line-height: 1.12;
}
:lang(ja) .hero h1 { font-size: clamp(1.9rem, 3.5vw, 2.75rem); }
.hero__lead { margin: 0 0 30px; font-size: 1.0625rem; color: var(--ink-2); max-width: 560px; }
:lang(ja) .hero__lead, :lang(ja) .sec-head p { font-size: 1rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero__chips { display: flex; flex-wrap: wrap; gap: 10px 20px; margin: 30px 0 0; padding: 0; list-style: none; }
.hero__chips li { display: flex; align-items: center; gap: 8px; font-size: .8125rem; font-weight: 600; color: var(--ink-2); }
.hero__chips svg { width: 16px; height: 16px; color: var(--brand); flex: none; }

/* khung ảnh giả lập cửa sổ ứng dụng */
.shot { border-radius: var(--r); overflow: hidden; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow); }
.shot__bar { display: flex; align-items: center; gap: 6px; padding: 9px 13px; background: #f4f7fb; border-bottom: 1px solid var(--line-soft); }
.shot__bar i { width: 9px; height: 9px; border-radius: 50%; background: #d8dfea; flex: none; }
.shot__bar i:nth-child(1) { background: #f4776a; }
.shot__bar i:nth-child(2) { background: #f6bf50; }
.shot__bar i:nth-child(3) { background: #4ec46f; }
.shot__bar b { margin-left: 8px; font-size: .6875rem; font-weight: 600; color: var(--ink-3); letter-spacing: .02em; }
.shot img { width: 100%; display: block; background: #fff; }

.hero__shot { position: relative; }
.hero__shot .shot { transform: perspective(1500px) rotateY(-3deg); }
.hero__cap { margin: 14px 0 0; font-size: .8125rem; color: var(--ink-3); text-align: center; }

.hero__egress {
    position: absolute; right: -6px; bottom: 46px;
    display: flex; align-items: center; gap: 9px;
    padding: 10px 15px;
    background: #fff; border: 1px solid var(--line); border-radius: 12px;
    box-shadow: var(--shadow);
    font-size: .8125rem; font-weight: 700; color: var(--ink);
}
.hero__egress em { font-style: normal; font-family: var(--mono); color: var(--ok); }
.hero__egress i { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px var(--ok-soft); }

/* dải số liệu */
.stats { border-top: 1px solid var(--line-soft); background: #fff; }
.stats__in { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 30px 26px; border-right: 1px solid var(--line-soft); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font-size: 2.25rem; font-weight: 800; line-height: 1; color: var(--ink); background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat span { display: block; margin-top: 8px; font-size: .8125rem; color: var(--ink-3); }

/* =====================================================================
   Vì sao: thẻ nỗi đau
   ===================================================================== */
.pains { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.pain {
    padding: 26px 22px; background: #fff;
    border: 1px solid var(--line); border-radius: var(--r);
    box-shadow: var(--shadow-sm);
    transition: transform .18s ease, box-shadow .18s ease;
}
.pain:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.pain__ic { width: 38px; height: 38px; border-radius: 11px; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; margin-bottom: 16px; }
.pain__ic svg { width: 19px; height: 19px; }
.pain h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.pain p { margin: 0; font-size: .875rem; color: var(--ink-3); }

/* =====================================================================
   Sơ đồ ranh giới dữ liệu
   ===================================================================== */
.bound { margin-top: 56px; }
.bound h3 { font-size: 1.25rem; font-weight: 700; text-align: center; margin-bottom: 28px; }
.bound__row { display: grid; grid-template-columns: minmax(0, 1.35fr) auto minmax(0, .9fr); gap: 22px; align-items: center; }

.machine {
    position: relative;
    padding: 26px 24px 22px;
    background: #fff;
    border: 2px solid var(--brand);
    border-radius: var(--r-lg);
    box-shadow: 0 10px 34px rgba(37, 99, 235, .12);
}
.machine__tag {
    position: absolute; top: -12px; left: 22px;
    padding: 3px 13px; background: var(--brand); color: #fff;
    border-radius: 999px; font-size: .6875rem; font-weight: 800; letter-spacing: .08em;
}
.machine__pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.node { padding: 16px 15px; border-radius: 12px; background: var(--bg-soft); border: 1px solid var(--line); }
.node--ai { background: var(--cyan-soft); border-color: #c3e8f2; }
.node b { display: block; font-size: .875rem; color: var(--ink); }
.node span { display: block; margin-top: 4px; font-size: .75rem; color: var(--ink-3); }
.node svg { width: 18px; height: 18px; color: var(--brand); margin-bottom: 9px; }
.node--ai svg { color: var(--cyan); }
.machine__loop {
    margin-top: 16px; padding: 11px 14px;
    background: var(--brand-soft); border-radius: 10px;
    font-size: .8125rem; font-weight: 600; color: var(--brand-dark);
    display: flex; align-items: center; gap: 9px;
}
.machine__loop svg { width: 16px; height: 16px; flex: none; }

.bound__arrow { text-align: center; color: var(--ink-3); }
.bound__arrow svg { width: 34px; height: 22px; color: #b9c6da; }
.bound__arrow span { display: block; margin-top: 6px; font-size: .6875rem; font-weight: 600; max-width: 130px; }

.gov { padding: 22px 20px; background: #fff; border: 1px dashed #c3cfe0; border-radius: var(--r-lg); }
.gov b { display: block; font-size: .9375rem; color: var(--ink); }
.gov span { display: block; margin-top: 7px; font-size: .8125rem; color: var(--ink-3); }
.gov .gov__no { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line-soft); font-weight: 600; color: var(--ink-2); }

.note {
    display: flex; gap: 12px;
    margin-top: 26px; padding: 16px 18px;
    background: var(--warn-soft); border: 1px solid #f0dfba; border-radius: var(--r);
    font-size: .875rem; color: #6b5518;
}
.note svg { width: 18px; height: 18px; flex: none; margin-top: 2px; color: var(--warn); }

/* =====================================================================
   Quy trình
   ===================================================================== */
.flow + .flow { margin-top: 54px; }
.flow__title { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; font-size: 1.0625rem; font-weight: 700; color: var(--ink); }
.flow__title::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.flow__title svg { width: 20px; height: 20px; color: var(--brand); }

.steps { display: grid; gap: 16px; grid-template-columns: repeat(6, 1fr); counter-reset: step; }
.steps--4 { grid-template-columns: repeat(4, 1fr); }
.step {
    position: relative;
    padding: 22px 18px 20px;
    background: #fff; border: 1px solid var(--line); border-radius: var(--r);
    box-shadow: var(--shadow-sm);
}
.step::before {
    counter-increment: step; content: counter(step);
    display: grid; place-items: center;
    width: 27px; height: 27px; margin-bottom: 14px;
    border-radius: 9px; background: var(--grad); color: #fff;
    font-size: .8125rem; font-weight: 800;
}
.step::after {
    content: ""; position: absolute; top: 34px; right: -11px;
    width: 8px; height: 8px; border-top: 1.5px solid #cbd6e6; border-right: 1.5px solid #cbd6e6;
    transform: rotate(45deg); z-index: 2;
}
.step:last-child::after { display: none; }
.step h4 { font-size: .9375rem; font-weight: 700; margin-bottom: 7px; }
.step p { margin: 0; font-size: .8125rem; color: var(--ink-3); }

/* =====================================================================
   Bốn trụ cột (tab)
   ===================================================================== */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; }
.tabs button {
    display: inline-flex; align-items: center; gap: 9px;
    padding: 11px 20px; border-radius: 999px;
    border: 1px solid var(--line); background: #fff; color: var(--ink-2);
    font-size: .875rem; font-weight: 600; cursor: pointer;
    transition: all .15s ease;
}
.tabs button svg { width: 17px; height: 17px; color: var(--ink-3); }
.tabs button:hover { border-color: #c2d1e8; color: var(--ink); }
.tabs button[aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.tabs button[aria-selected="true"] svg { color: #8fd4ff; }

.panel { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 44px; align-items: center; }
.panel[hidden] { display: none; }
.panel h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 14px; }
.panel > div > p { margin: 0 0 20px; color: var(--ink-2); }
.panel ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 11px; }
.panel li { display: flex; gap: 11px; font-size: .9375rem; }
.panel li svg { width: 18px; height: 18px; color: var(--ok); flex: none; margin-top: 3px; }

/* =====================================================================
   Vai trò
   ===================================================================== */
.roles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.role { background: #fff; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; box-shadow: var(--shadow-sm); }
.role__hd { display: flex; align-items: center; gap: 11px; padding: 18px 20px; border-bottom: 1px solid var(--line-soft); background: linear-gradient(180deg, #fbfcff, #fff); }
.role__hd svg { width: 20px; height: 20px; color: var(--brand); }
.role__hd b { font-size: .9375rem; color: var(--ink); }
.role__bd { padding: 18px 20px 20px; }
.role__lbl { font-size: .6875rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.role__bd p { margin: 6px 0 0; font-size: .875rem; color: var(--ink-3); }
.role__gain { margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--line); }
.role__gain .role__lbl { color: var(--brand); }
.role__gain p { color: var(--ink-2); font-weight: 500; }

/* =====================================================================
   Tour ảnh thật
   ===================================================================== */
/* Hai cot chu khong phai ba: anh chup giao dien chi doc duoc khi du to.
   Muon xem ky hon nua thi bam vao anh de mo lon. */
.wrap--wide { max-width: 1360px; }
.tour { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.tour figure { margin: 0; }
.tour__card {
    position: relative;
    display: block; width: 100%; padding: 0; text-align: left; cursor: zoom-in;
    background: #fff; border: 1px solid var(--line); border-radius: var(--r);
    overflow: hidden; box-shadow: var(--shadow-sm);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.tour__card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c6d5ea; }
.tour__card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; object-position: top center; background: #f7f9fc; }
.tour__zoom {
    position: absolute; top: 12px; right: 12px;
    padding: 5px 12px; border-radius: 999px;
    background: rgba(15, 27, 51, .78); color: #fff;
    font-size: .6875rem; font-weight: 700; letter-spacing: .02em;
    opacity: 0; transform: translateY(-4px); transition: opacity .18s ease, transform .18s ease;
}
.tour__card:hover .tour__zoom, .tour__card:focus-visible .tour__zoom { opacity: 1; transform: none; }
.tour__cap { padding: 15px 17px 17px; }
.tour__cap b { display: block; font-size: .9375rem; color: var(--ink); }
.tour__cap span { display: block; margin-top: 5px; font-size: .8125rem; color: var(--ink-3); }
.tour__more { margin: 30px 0 0; text-align: center; font-size: .875rem; color: var(--ink-3); }
.tour__more a { color: var(--brand); font-weight: 600; border-bottom: 1px solid rgba(37, 99, 235, .3); }

/* xem ảnh lớn */
.lb { position: fixed; inset: 0; z-index: 90; display: none; place-items: center; padding: 32px; background: rgba(10, 18, 34, .82); backdrop-filter: blur(3px); }
.lb[open] { display: grid; }
.lb img { max-width: min(1400px, 94vw); max-height: 84vh; border-radius: 10px; box-shadow: var(--shadow-lg); background: #fff; }
.lb figcaption { margin-top: 14px; text-align: center; color: #e6edf8; font-size: .9375rem; font-weight: 600; }
.lb__close { position: absolute; top: 20px; right: 24px; width: 40px; height: 40px; border-radius: 50%; border: 0; background: rgba(255, 255, 255, .14); color: #fff; font-size: 20px; cursor: pointer; }
.lb__close:hover { background: rgba(255, 255, 255, .26); }

/* =====================================================================
   Trạng thái
   ===================================================================== */
.status { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.stcard { padding: 26px 24px; border-radius: var(--r); border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow-sm); }
.stcard--now { border-color: #bfe6cd; background: linear-gradient(180deg, #f4fbf6, #fff); }
.stcard--next { border-color: #f0dfba; background: linear-gradient(180deg, #fefaf2, #fff); }
.stcard h3 { display: flex; align-items: center; gap: 10px; font-size: 1.0625rem; font-weight: 700; margin-bottom: 18px; }
.stcard h3 svg { width: 19px; height: 19px; }
.stcard--now h3 svg { color: var(--ok); }
.stcard--next h3 svg { color: var(--warn); }
.stcard ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.stcard li { display: flex; gap: 11px; font-size: .9375rem; color: var(--ink-2); }
.stcard li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; flex: none; margin-top: 9px; }
.stcard--now li::before { background: var(--ok); }
.stcard--next li::before { background: var(--warn); }

/* =====================================================================
   Bắt đầu
   ===================================================================== */
.go { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 34px; }
.gocard { padding: 26px 24px; background: #fff; border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow-sm); }
.gocard b { display: grid; place-items: center; width: 34px; height: 34px; margin-bottom: 16px; border-radius: 11px; background: var(--ink); color: #fff; font-size: .875rem; font-weight: 800; }
.gocard h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.gocard p { margin: 0; font-size: .875rem; color: var(--ink-3); }
.go__cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.go__net { font-size: .8125rem; color: var(--ink-3); }

/* =====================================================================
   Liên hệ
   ===================================================================== */
.contact { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.ccard {
    display: block; padding: 26px 24px;
    background: #fff; border: 1px solid var(--line); border-radius: var(--r);
    box-shadow: var(--shadow-sm);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.ccard:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #c6d5ea; }
.ccard svg { width: 22px; height: 22px; color: var(--ink-3); margin-bottom: 14px; }
.ccard__lbl { display: block; font-size: .6875rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.ccard__val { display: block; margin-top: 6px; font-size: 1.0625rem; font-weight: 700; color: var(--ink); word-break: break-word; }
.ccard__note { display: block; margin-top: 10px; font-size: .875rem; color: var(--ink-3); }
.ccard--primary { border-color: var(--brand); background: linear-gradient(180deg, #f5f9ff, #fff); box-shadow: 0 8px 26px rgba(37, 99, 235, .1); }
.ccard--primary svg { color: var(--brand); }
.ccard--primary .ccard__val { color: var(--brand-dark); }

/* =====================================================================
   Hỏi đáp
   ===================================================================== */
.faq { max-width: 860px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow-sm); overflow: hidden; }
.faq details[open] { border-color: #c6d5ea; }
.faq summary {
    display: flex; align-items: center; gap: 14px;
    padding: 18px 22px; cursor: pointer; list-style: none;
    font-size: 1rem; font-weight: 650; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
    content: ""; margin-left: auto; flex: none;
    width: 9px; height: 9px;
    border-right: 1.8px solid var(--ink-3); border-bottom: 1.8px solid var(--ink-3);
    transform: rotate(45deg) translateY(-2px); transition: transform .18s ease;
}
.faq details[open] summary::after { transform: rotate(225deg) translateY(-2px); }
.faq p { margin: 0; padding: 0 22px 20px 22px; font-size: .9375rem; color: var(--ink-3); }

/* =====================================================================
   Kêu gọi cuối + chân trang
   ===================================================================== */
.end { position: relative; padding: 76px 0; background: var(--grad); color: #fff; text-align: center; overflow: hidden; }
.end::after { content: ""; position: absolute; inset: 0; background: radial-gradient(600px 300px at 20% 0%, rgba(255, 255, 255, .18), transparent 70%); pointer-events: none; }
.end h2 { position: relative; color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; }
.end p { position: relative; max-width: 640px; margin: 16px auto 30px; color: rgba(255, 255, 255, .9); }
.end__cta { position: relative; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.end .btn--primary { background: #fff; color: var(--brand-dark); box-shadow: 0 8px 26px rgba(9, 30, 66, .2); }
.end .btn--ghost { background: rgba(255, 255, 255, .12); border-color: rgba(255, 255, 255, .42); color: #fff; box-shadow: none; }
.end .btn--ghost:hover { background: rgba(255, 255, 255, .2); }

.ft { padding: 46px 0 34px; background: #0f1b33; color: #9fb0c9; font-size: .875rem; }
.ft__in { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 34px; }
.ft .brand__name { color: #fff; }
.ft .brand__name span { color: #8398b5; }
.ft__desc { margin: 16px 0 0; max-width: 420px; }
.ft__links b { display: block; margin-bottom: 12px; color: #fff; font-size: .8125rem; letter-spacing: .04em; text-transform: uppercase; }
.ft__links a { display: block; padding: 4px 0; }
.ft__links a:hover { color: #fff; }
.ft__note { margin: 34px 0 0; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .1); font-size: .8125rem; color: #7d90ab; }
.ft__copy { margin: 8px 0 0; font-size: .8125rem; color: #7d90ab; }

/* =====================================================================
   Hiệu ứng hiện dần khi cuộn
   ===================================================================== */
.rev { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.rev.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .rev { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
}

/* =====================================================================
   Màn hình nhỏ
   ===================================================================== */
@media (max-width: 1080px) {
    .pains, .roles { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(3, 1fr); }
    .step:nth-child(3n)::after { display: none; }
}

@media (max-width: 900px) {
    .nav { display: none; }
    .burger { display: block; }
    .hdr__cta { display: none; }
    .nav--open {
        display: flex; flex-direction: column; gap: 0;
        position: absolute; top: 66px; left: 0; right: 0;
        padding: 8px 24px 18px; margin: 0;
        background: #fff; border-bottom: 1px solid var(--line);
        box-shadow: var(--shadow);
    }
    .nav--open a { padding: 11px 0; border-bottom: 1px solid var(--line-soft); }
    .hero__in, .panel, .bound__row, .ft__in { grid-template-columns: 1fr; }
    .hero__shot .shot { transform: none; }
    .hero__egress { position: static; margin-top: 14px; display: inline-flex; }
    .bound__arrow { transform: rotate(90deg); margin: 6px auto; }
    .bound__arrow span { transform: rotate(-90deg); margin-top: 14px; }
    .stats__in { grid-template-columns: repeat(2, 1fr); }
    .stat:nth-child(2) { border-right: 0; }
    .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line-soft); }
    .status, .go, .contact, .tour { grid-template-columns: 1fr; }
    .sec { padding: 62px 0; }
}

@media (max-width: 620px) {
    .pains, .roles, .steps, .tour { grid-template-columns: 1fr; }
    .step::after { display: none; }
    .brand__name span { display: none; }
    .lang button span.txt { display: none; }
    .lang button { padding: 6px 8px; }
    .hero h1 { font-size: 2rem; }

    /* header phai vua duoc man hinh hep: cho ten thuong hieu co ngot lai */
    .hdr__in { gap: 10px; }
    .hdr__right { gap: 8px; }
    .brand { flex: 0 1 auto; min-width: 0; }
    .brand__name { font-size: .8125rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}

@media print {
    .hdr, .lb, .end__cta { display: none; }
    .rev { opacity: 1; transform: none; }
    .panel[hidden] { display: grid !important; }
}